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CN112688030A - Battery pack, battery-operated appliance, tool system, system and battery system - Google Patents

Battery pack, battery-operated appliance, tool system, system and battery system Download PDF

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Publication number
CN112688030A
CN112688030A CN202011072042.8A CN202011072042A CN112688030A CN 112688030 A CN112688030 A CN 112688030A CN 202011072042 A CN202011072042 A CN 202011072042A CN 112688030 A CN112688030 A CN 112688030A
Authority
CN
China
Prior art keywords
battery
interface
unit
battery pack
connection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011072042.8A
Other languages
Chinese (zh)
Inventor
C·克莱
M·雷伊曼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of CN112688030A publication Critical patent/CN112688030A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/247—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H02J7/0045—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mechanical Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The invention is based on a battery pack having at least one battery cell for providing a voltage, at least one further battery cell for providing a further voltage, which comprises the at least one battery cell, and at least one connection unit for electrical and mechanical connection to at least one battery-operated device, in particular a battery-operated tool. The connection unit comprises at least one interface and at least one further interface, which are provided for transmitting electrical energy to the battery-operated appliance and are designed to be electrically connected in at least one operating state. The invention also relates to a corresponding battery-operated appliance, a tool system, a system and a battery system.

Description

Battery pack, battery-operated appliance, tool system, system and battery system
Technical Field
The invention relates to a battery pack, a battery-operated device, a tool system, a system and a battery system.
Background
There has been proposed a battery pack having: at least one battery cell for providing a voltage, the battery cell comprising at least one battery cell; at least one further battery cell for providing a further voltage, the further battery cell comprising at least one battery cell; and at least one connection unit for electrical and mechanical connection to at least one battery-operated device, in particular a battery-operated tool.
Disclosure of Invention
The invention relates to a battery pack, comprising: at least one battery cell for providing a voltage, the battery cell comprising at least one battery cell; at least one further battery cell for providing a further voltage, the further battery cell comprising at least one battery cell; and at least one connection unit for electrical and mechanical connection to at least one battery-operated device, in particular a battery-operated tool.
It is proposed that the connection unit comprises at least one interface and at least one further interface, which are provided for transmitting electrical energy to the battery-operated appliance and are designed to be electrically connected in at least one operating state without direct connection.
"provided" is to be understood in particular as specifically programmed, designed and/or equipped. "an object is provided for a specific function" is to be understood in particular as: the object satisfies and/or implements this particular function in at least one application state and/or running state. The interface and/or the further interface each comprise at least two contact elements for transmitting electrical energy, in particular current or voltage, to the battery-operated appliance. The interface and/or the further interface can preferably be connected, in particular electrically connected, at least partially to each other in at least one operating state of the battery pack. Preferably, the connection unit, in particular the interface and/or the further interface, is provided for applying a voltage, a further voltage and/or a combination of this voltage and this further voltage via the contact elements to corresponding contact elements of the battery-operated device, in particular in the state in which the battery pack is arranged on the battery-operated device. For example, the contact element and/or the counter-contact element are designed as tulip contacts, plug tongues, contact plates, contact rails, etc. The interface and the further interface can preferably be connected to the battery-operated appliance independently of one another. The interface is provided in particular for transmitting electrical energy to the battery-operated appliance in at least one operating state independently of the further interface. The further interface is preferably provided for transmitting electrical energy to the battery-operated appliance in at least one operating state independently of the interface. The interface and/or the further interface are preferably provided for transmitting electrical energy via a voltage applied to the contact element and/or a current flowing through the contact element. The term "interface and further interface" are configured without direct electrical connection "in at least one operating state is to be understood in particular to mean that the interface and the further interface are configured electrically separately from one another in the operating state or are connected via a significant electrical resistance which at least substantially prevents a current flow between the interface and the further interface and/or between the battery cell and the further battery cell. This significant resistance is in particular different from the line resistance or the total resistance of all components arranged in particular in circuit terms between the interface and the further interface. The significant resistance corresponds in particular to a value of in particular at least 1k Ω, preferably at least 100k Ω and particularly preferably at least 1M Ω.
Preferably, the battery cell and the further battery cell are each at least partially constructed as a cluster of a plurality of battery cells. The battery cells of the battery cell and the further battery cell are in particular each connected in series. The battery cell and/or the further battery cells each have, for example, a plurality of, in particular exactly five, battery cells. However, other configurations of the battery cells and/or of further battery cells are also conceivable, in particular with a number of battery cells different from five and/or with a connection of battery cells different from a pure series connection. The battery cell and the further battery cell preferably each have two poles via which a voltage or a further voltage can be output. The potential difference between the two poles of the battery cell preferably corresponds to the voltage. The potential difference between the two poles of the further battery cell preferably corresponds to the further voltage. In particular, the battery cells and/or the further battery cells each have at least one electronic unit, which is provided for detecting and/or monitoring the individual cell voltages of the battery cells. The battery pack in particular has at least one compensation unit, which is provided to equalize the state of charge of the battery cells and of the further battery cells with one another in at least one operating state.
It is conceivable that the battery pack comprises at least one protective unit, which is provided to protect the interface and/or the further interface from contact with objects, dirt and/or damage, in particular in the state in which the interface and/or the further interface is separated from the battery-operated appliance. The protection unit preferably comprises at least one protection element, which is arranged on the interface and/or the further interface. The protective element is configured, for example, as a cover cap, a slider, a film, a cover or the like. The protective element is mounted on the battery pack, in particular on the connecting unit and/or the housing unit of the battery pack, for example, such that it can be moved, in particular can be tilted, pushed, and/or pivoted. The protective element is provided in particular for being moved into the passive position when the battery-operated device is electrically and/or mechanically connected to the interface and/or to a further interface, in particular by being connected in a force-locking and/or form-locking manner to the battery-operated device. Preferably, the protective element is arranged at least partially, in particular at least predominantly, spaced apart from the interface and/or the further interface in the passive position, in particular spaced apart from the contact element of the interface and/or the further interface. Preferably, the protective element releases the interface and/or the further interface in the passive position for transmitting electrical energy to the battery-operated appliance.
The configuration of the battery pack according to the invention allows for an advantageously high flexibility, in particular with regard to the use of the battery pack with differently designed battery-operated devices. Advantageously high compatibility with existing battery-operated appliances can be achieved, in particular because the interface and the further interface can have a conventional geometry and at the same time different currents and/or voltages can be provided for the battery-operated appliances.
It is furthermore proposed that the interface and the further interface each comprise at least two, in particular the aforementioned contact elements, wherein each of the contact elements of the interface and the further interface is connected to at least one pole, in particular one of the aforementioned poles, of the battery cell and/or the further battery cell. In particular, the battery cell is in particular permanently electrically connected to the interface. Preferably, the further battery cell is in particular permanently electrically connected to the further interface. An advantageously high flexibility of the battery pack can be achieved, in particular because different battery operating devices can be used with the battery pack via the interface and the further interface and/or can be connected to the battery cells and the further battery cells in different ways.
It is also proposed that the battery pack has at least one connection unit for combining the voltages of the battery cells and the further battery cells and/or for combining the currents at the interface and/or the further interface. The connection unit is provided in particular for connecting the battery unit and the further battery unit for adapting and/or supplying a voltage applied to the interface and/or the further interface. Preferably, the compensation unit is configured as part of the connection unit. The compensation unit is provided in particular for connecting the battery cell to a further battery cell in at least one operating state in such a way that a compensation current flows between the battery cell and the further battery cell. The battery pack preferably has at least one control and/or regulating unit, which is provided to control and/or regulate at least the connection unit, in particular as a function of the battery-operated device connected to the battery pack, in particular to the interface and/or the further interface, as a function of the state of charge of the battery unit and/or the further battery unit, etc. A "control and/or regulating unit" is to be understood to mean, in particular, a unit having at least one control electronics. The term "control electronics" is to be understood to mean, in particular, a unit having a processor unit and a memory unit, as well as an operating program stored in the memory unit. The connection unit preferably comprises electrical lines which connect the contact elements of the interface and/or of the further interface to the poles of the battery cell and/or of the further battery cell, in particular of the battery cell and/or of the further battery cell. Advantageously, the voltage applied to the contact element and/or the current transmitted via the contact element can be adapted, in particular separately and independently, for the interface and the further interface, respectively.
Furthermore, it is proposed that the connection unit comprises at least one signal contact element, which is provided to detect, in particular electronically, the type of battery-operated appliance and/or the connection configuration of the connection unit when the battery-operated appliance is connected. The signal contact element is preferably provided for detecting at least one electrical signal (electrical signal) and/or electronic signal of the battery-operated appliance when connected to the battery-operated appliance in order to determine the type of the battery-operated appliance and/or the connection configuration of the connection unit. The electrical and/or electronic signals are transmitted to the control and/or regulating unit, in particular via the signal contact elements. The control and/or regulating unit is preferably provided for determining the type of battery-operated appliance and/or the connection configuration of the connection unit by means of electrical and/or electronic signals when connected to the battery-operated appliance. The control and/or regulating unit is provided, for example, to read the type of battery-operated appliance from an electrical and/or electronic signal, wherein the electrical and/or electronic signal comprises, in particular, an identification of the battery-operated appliance. The control and/or regulating unit is provided in particular for determining the connection configuration of the connection unit when connected to the battery-operated device as a function of the electrical and/or electronic signal, the identification of the battery-operated device and/or the signal strength of the electrical and/or electronic signal. It is conceivable for the connection unit to have at least one further signal contact element, which is provided to detect, in particular electronically, the type of battery-operated appliance and/or the connection configuration of the connection unit when the battery-operated appliance is connected. Preferably, the signal contact elements are arranged on the interface and the further signal contact elements are arranged on the further interface. The signal contact element is preferably provided for, in the case of a connection of the interface to a battery-operated appliance connected to the interface, in particular for electronically detecting the type of the battery-operated appliance connected to the interface and/or the connection configuration of the connection unit. The further signal contact element is preferably provided for detecting, in particular electronically, the type of the further battery-operated appliance connected to the further interface and/or the connection configuration of the connection unit when the further interface is connected to the further battery-operated appliance connected to the further interface. In particular in the case of a configuration of the connection unit with a further signal contact element, it is conceivable for the signal contact element and the further signal contact element to be provided for detecting the type of the battery-operated appliance and/or the connection configuration of the connection unit when the battery-operated appliance is connected, as a function of the electrical contact of the signal contact element and the further signal contact element with at least one corresponding signal contact element of the battery-operated appliance. The signal contact element and the further signal contact element are provided, for example, for: if only the signal contact element is in contact with a corresponding signal contact element, a battery-operated device which is only compatible with the interface is detected as a type of battery-operated device, and/or a connection configuration which uses only the interface for energy transmission is detected as a connection configuration of the connection unit. The control and/or regulating unit is provided in particular for detecting an electrical contact of the signal contact element and/or of a further signal contact element, in particular in the case of a connection with a corresponding signal contact element. The signal contact elements and/or counter-contact elements are designed, for example, as tulip contacts, plug tongues, contact plates, contact rails, etc. The connection configuration required for transmitting electrical energy to the battery-operated appliance can be determined. When the battery pack is connected to the battery-operated device, the power demand of the battery-operated device can be determined. Appliance-specific wiring of the wiring unit and/or the interface and/or the further interface can be realized.
Furthermore, it is proposed that the connection unit comprises at least one switching element, which is provided to electrically connect the interface and the further interface to the battery unit and/or the further battery unit, respectively, depending on the type of battery-operated appliance and/or the connection configuration of the connection unit. The connection unit is preferably provided for adapting the voltage provided at the interface and the further interface, in particular by means of at least one switching element, depending on the type of battery-operated appliance and/or the connection configuration of the connection unit. Preferably, the switching element is arranged, in particular in terms of circuitry, between the battery cell or a further battery cell, in particular between one pole of the battery cell or a further battery cell and one of the contact elements of the interface or a further interface, between the battery cell and a further battery cell, in particular between one pole of the battery cell and one pole of a further battery cell, or between the contact elements of the interface and/or a further interface. One component, in particular an electrical or electronic component, in particular a switching element, is arranged "in circuit" between two further components, for example between a battery cell and a further battery cell, in particular it being understood that the one component is electrically connected to the two further components and/or is part of an electrical and/or electronic circuit together with the two further components. The arrangement of the components in terms of circuitry is particularly independent of the geometric arrangement of the components. It is conceivable for the connection unit to have more than one switching element. In a preferred embodiment, the connection unit has two switching elements which are arranged in each case, in particular in terms of circuitry, between one of the poles of the battery cell and one of the poles of the further battery cell and between one of the contact elements of the interface and one of the contact elements of the further interface. In particular, one of the two switching elements is arranged, in particular in terms of circuitry, between the positive pole of the battery cell and the positive pole of the further battery cell. Preferably, the other of the two switching elements is arranged, in particular in terms of circuitry, between the negative pole of the battery cell and the negative pole of the further battery cell. The switching element is preferably provided for connecting the battery cell and the further battery cell in parallel via the contact elements of the interface and the further interface, in particular in at least one operating state. It is conceivable for the switching element to be part of a compensation unit, the switching element being provided in particular for realizing a compensation current between the battery cell and a further battery cell in the closed state. Alternatively or additionally, it is conceivable for the connection unit to comprise at least one further switching element. The further switching element is preferably provided for connecting the battery cell and the further battery cell in series via the interface or a contact element of the further interface, in particular in at least one operating state. In particular, the further switching element is arranged, in particular in terms of circuitry, between two contact elements of the interface or of the further interface and/or between one pole of the battery cell and one pole of the further battery cell. Preferably, the switching element and/or the further switching element are designed as electronic switching elements. For example, the switching element and/or the further switching element are configured as a MOSFET switch, a switching relay, an IGBT, a reed switch, a capacitive switch, or the like. Energy can be transmitted to a plurality of differently designed battery-operated appliances by means of the battery pack, in particular because the power transmitted via the interface and/or the further interface, in particular the applied voltage and/or the transmitted current, can be adapted to the configuration of the battery-operated appliances. Advantageously high flexibility can be achieved. The battery cells and the further battery cells can be automatically connected as a function of the voltage to be applied to the contact elements and/or the current to be passed through the contact elements. An advantageous rapid start of the energy transmission can be achieved, in particular because the communication between the battery pack and the battery-operated device can be effected directly when the battery pack is connected to the battery-operated device.
It is further proposed that the interface has at least one connection region and the further interface has at least one further connection region, wherein the connection region and the further connection region are formed spatially separate from each other and are provided for a non-positive and/or positive connection with the battery operating device. The connection region and/or the further connection region are preferably formed in one piece with the housing unit. "one-piece" is to be understood in particular to mean formed in one piece. The one-piece body is preferably produced from a single blank, blank and/or casting, particularly preferably in an injection molding process, in particular in a one-component and/or multi-component injection molding process. The contact elements of the interface are arranged in particular on the connection region. The contact elements of the further interface are preferably arranged on the further connection region. It is conceivable that the connecting region and/or the further connecting region each have at least one fastening element. The fastening element is preferably part of a fastening unit of the battery pack and/or of the battery-operated device, which is provided for fastening the battery pack to the battery-operated device. The fastening element is designed, for example, as a detent element, undercut, form-locking notch, magnetic element, etc. In particular, the interface, in particular the connection region, is designed as a plug insert, a sliding insert or the like. In particular, the further interface, in particular the further connection region, is designed as a plug insert, a sliding insert or the like. Preferably, the interface and the further interface, in particular the connection region and the further connection region, are at least for the most part, in particular in terms of external geometry, of structurally identical design. Preferably, the connecting region and/or the further connecting region each have at least one, in particular at least two, form-locking projections. In particular, the form-locking projection is provided for cooperating with at least one form-locking notch of the battery operating device, in particular for connecting the battery pack to the battery operating device, in particular for being moved into at least one form-locking notch of the battery operating device. Alternatively, it is conceivable that the connection region and/or the further connection region in particular each have at least one, in particular at least two, form-locking notches which are provided for cooperating with, in particular receiving, at least one form-locking projection of the battery-operated device. Advantageously, a simple and fast connection of the battery pack to the battery-operated device can be achieved, in particular because the connection regions that are separate from one another can be directly differentiated by the user. Advantageous operational convenience can be achieved in the case of connecting the battery pack to the battery-operated appliance. The operator can easily recognize how and where to connect battery-operated appliances of different configurations to the battery pack.
It is also proposed that the battery pack has at least one, in particular the aforementioned housing unit, wherein the interface and the further interface are arranged on the housing unit offset from one another in the offset direction, in particular at least substantially parallel to one another, with respect to a center axis of the housing unit. The offset direction preferably extends along an axis which is oriented at least substantially parallel or at least substantially perpendicular to the central axis. "substantially perpendicular" is to be understood in particular as meaning the orientation of a line or plane, in particular an axis, along which the offset direction extends relative to a further line or a further plane, in particular a central axis, wherein the line or plane and the further line or the further plane, in particular viewed in the projection plane, enclose an angle of 90 ° and have a maximum deviation, in particular of less than 8 °, advantageously of less than 5 ° and particularly advantageously of less than 2 °. "substantially parallel" is to be understood in particular as meaning the orientation of a line or plane, in particular an axis, along which the offset direction extends relative to a further line or a further plane, in particular a central axis, wherein the line or plane has a deviation relative to the further line or the further plane of, in particular, less than 8 °, advantageously less than 5 °, and particularly advantageously less than 2 °. In particular, the connection region and the further connection region are arranged offset from one another, in particular at least substantially parallel to one another, in the offset direction with respect to the center axis of the housing unit. In one embodiment, the connecting region and the further connecting region have at least one form-locking projection and/or at least one form-locking notch, in particular in this embodiment, the form-locking projection and/or the form-locking notch are preferably arranged offset from one another in the offset direction with respect to the center axis of the housing unit, in particular at least substantially parallel to one another. Preferably, the battery pack, in particular the interface and/or the further interface, has at least one connection direction, wherein the battery pack can be connected to the battery-operated appliance, in particular via a movement in the connection direction. Particularly preferably, the offset direction is oriented at least substantially perpendicularly to the joining direction. An advantageously compact design of the battery pack can be achieved, in particular in the region of the interface and the further interface. The battery pack can be connected to battery-operated devices of different designs in an advantageously simple and quick manner. Advantageously high operational convenience can be achieved. Advantageously, a uniform connection direction and/or a uniform connection movement for connecting to the battery-operated device can be achieved for the interface and the further interface.
It is further proposed that the interface and the further interface each comprise at least two contact elements, wherein the connection unit is designed in such a way that each contact element of the interface and the further interface can be connected to at least one pole of the battery cell and at least one pole of the further battery cell, respectively. Preferably, the switching element and/or the further switching element are each provided for detachably connecting one of the contact elements of the interface and the further interface to one pole of the battery cell and to one pole of the further battery cell. Particularly preferably, the switching element and/or the further switching element are each provided for conducting a maximum average value of the current of at least 70A, preferably at least 90A and particularly preferably at least 100A, wherein the switching element and/or the further switching element have in particular an unlimited functionality, in particular remain undamaged. Preferably, the switching element and/or the further switching element are each provided for conducting a maximum current of at least 220A, preferably at least 270A and particularly preferably at least 300A, wherein the switching element and/or the further switching element have in particular an unlimited functionality, in particular remain undamaged. An advantageously high flexibility with regard to the voltages which may be applied to the interface and/or the further interface and/or the currents which may be transmitted via the interface and/or the further interface is achieved. An advantageously large number of battery-operated appliances compatible with the battery pack can be realized.
Furthermore, a battery-operated device, in particular a battery-operated machine tool, for use with at least one battery pack according to the invention is proposed, which has at least one interface unit, which comprises at least four counter contact elements, wherein the counter contact elements are provided for electrical connection to contact elements of an interface of a connection unit of the battery pack and/or of a further interface in order to receive electrical energy.
The corresponding contact elements are preferably designed to correspond to the contact elements of the interface of the battery pack and/or of the further interface. Preferably, the interface unit comprises at least one receiving area and at least one further receiving area, wherein in particular two of the four counter contact elements are arranged at least partially within the receiving area and the other two of the four counter contact elements are arranged at least partially within the further receiving area. In particular, it is preferred that the two corresponding contact elements are provided for cooperating, in particular being placed in electrical contact, with the two contact elements of the interface, in particular for connecting the battery-operated appliance to the battery pack. Preferably, the two further corresponding contact elements are provided for cooperating, in particular being placed in electrical contact, with the two contact elements of the further interface, in particular for connecting the battery-operated appliance to the battery pack. Preferably, the receiving region, in particular at least one receiving surface of the battery-operated device arranged therein, is formed in a manner corresponding to the connecting region of the interface. In particular, at least one contact surface of the connection region of the interface contacts the receiving region, in particular the receiving surface, in the connected state of the battery-operated device with the battery pack. Preferably, the further receiving region, in particular at least one further receiving surface of the battery-operated device arranged within the further receiving region, is formed corresponding to a further connecting region of the further interface. In particular, at least one contact surface of a further connection region of the further interface contacts the further receiving region, in particular the further receiving surface, in the connected state of the battery-operated device and the battery pack. Preferably, the receiving region and the further receiving region, in particular the two counter contact elements and the further two counter contact elements, are arranged offset from one another in at least one direction oriented, in particular at least substantially, perpendicularly to the receiving direction of the battery-operated appliance. Preferably, in the state in which the battery-operated device is connected to the battery pack, the receiving direction is at least substantially parallel to the connecting direction of the interface and the further interface. Preferably, the interface unit comprises at least two connecting elements, in particular form-locking projections and/or form-locking notches, wherein at least one connecting element is arranged within the receiving region and at least one further connecting element is arranged within a further receiving region. The battery-operated appliance preferably comprises at least one control unit and at least one corresponding signal contact element. The corresponding signal contact elements are arranged in particular on the receiving area and/or on a further receiving area. It is conceivable for the battery-operated device to comprise more than one, in particular exactly two, corresponding signal contact elements, wherein in particular at least one corresponding signal contact element is arranged on the connection region and at least one further corresponding signal contact element is arranged on the further connection region. In particular, the at least one/more corresponding signal contact element/s is/are electrically connected with the control unit. The control unit is preferably provided for transmitting at least one electrical and/or electronic signal via the corresponding signal contact element/s. The electrical and/or electronic signals of the control unit are provided in particular for transmitting information about the type of battery-operated appliance and/or a connection configuration of a connection unit of the battery pack, which is predefined via the interface unit, to signal contact elements of the battery pack, in particular to a control and/or regulating unit, when the battery pack is connected.
The configuration according to the invention of the battery-operated device enables an advantageously high flexibility, in particular with regard to the use of the battery-operated device with differently configured battery packs, for example with only one interface or with an interface and a further interface. An advantageously high electrical power transmitted via the interface unit can be achieved, in particular by means of an advantageously high transmitted current and/or an advantageously high applied voltage. In particular, the battery pack for use with the battery-operated device can have an already known configuration, in particular with regard to the interface geometry, in particular because the battery-operated device can be connected to more than one interface of the battery pack.
Furthermore, it is proposed that the battery-operated device has at least one connection unit which is provided for connecting the corresponding contact elements for combining the voltages and/or the currents applied via the interface and the further interface. The battery-operated appliance comprises in particular at least one consumer unit, in particular a motor, a heating element, a lighting element, etc. The connection unit of the battery-operated appliance is preferably provided with a switching element for switching the connection unit of the battery-operated appliance as a function of the voltage applied to the counter contact element and/or the current transmitted via the counter contact element and as a function of a characteristic quantity of the voltage and/or current demand of the consumer unit. In particular, the terminal unit of the battery-operated device is constructed at least substantially identically to the terminal unit of the battery pack. In particular, a battery-operated device having a connection unit is provided for use with a battery pack without a connection unit, wherein preferably in the connected state of the battery pack to the battery-operated device the battery unit is connected in particular only to the interface and the further battery unit is connected only to the further interface. Preferably, the switching elements of the connection unit of the battery-operated appliance are each arranged, in particular in circuit terms, between an electrical connection of the consumer unit and at least one of the corresponding contact elements of the interface unit. Preferably, the connection unit of the battery-operated appliance comprises at least one further switching element, which is arranged in particular in circuit terms between two of the corresponding contact elements of the interface unit and/or between two electrical connections of the consumer unit. The further switching element is preferably provided for connecting the voltage of the battery unit and the further battery unit, which is applied separately to the corresponding contact element, in series and to the consumer unit. In particular, the battery pack to be used with the battery-operated device can be used to achieve an advantageously high flexibility, since the voltage and/or current applied to the corresponding contact element can be wired for operating the battery-operated device, in particular the consumer unit. The battery pack to be used with the battery-operated device can be advantageously highly compact, in particular because the battery pack can be designed independently of the terminal unit. This makes it possible to achieve an advantageously high level of operational convenience of the battery-operated appliance, in particular because the weight and volume of the components to be carried apart from the appliance can be reduced.
Furthermore, a tool system is proposed, which has at least one battery pack according to the invention and at least one battery-operated device according to the invention.
An advantageously high flexibility can be achieved by the configuration of the tool system according to the invention. Advantageously high compatibility with other already existing battery-operated appliances can be achieved, in particular because the interface and the further interface and interface unit can have a conventional geometry and at the same time can provide a plurality of battery-operated appliances with varying currents and/or voltages.
Furthermore, a system is proposed, which has at least one first battery-operated device, in particular a first battery-operated power tool, in particular a battery-operated device according to the invention, and at least one second battery-operated device and at least one battery pack according to the invention, wherein the second battery-operated device is provided for an electrical and mechanical connection to only one interface of the battery pack, and the first battery-operated device is provided for an electrical and mechanical connection to the interface of the battery pack and to a further interface. In particular, in an operating state in which the second battery-operated device is connected to the battery pack, the second battery-operated device is electrically connected to the battery pack only via the one interface, wherein the other interface is in particular designed separately from the second battery-operated device. The first battery-operated device is preferably electrically connected to the battery pack via the interface and the further interface in the operating state in which the battery pack is connected.
The configuration of the system according to the invention allows an advantageously high flexibility, in particular because the battery pack can be used with a plurality of differently designed battery-operated devices. Advantageously high compatibility with other already existing battery-operated appliances can be achieved, in particular because the interface and the further interface and interface unit can have a conventional geometry and at the same time can provide a plurality of battery-operated appliances with varying currents and/or voltages. Advantageously high operational convenience can be achieved, in particular because a battery pack, in particular of one battery pack type, can be used for a plurality of appliances. Thereby, a small number of components to be carried in addition to the appliance can be achieved.
Furthermore, a battery system is proposed, which has at least one battery-operated device, in particular a battery-operated device according to the invention, having at least one first battery pack according to the invention and having at least one second battery pack, wherein the second battery pack has exactly one interface, and wherein the battery-operated device is provided for electrical and mechanical connection to the first battery pack and the second battery pack. In an operating state in which the battery-operated device is connected to the first battery pack, the battery-operated device is preferably electrically connected to the battery pack only via the interface. The further interface of the first battery pack is designed to be separated from the battery-operated device, in particular in an operating state in which the battery-operated device is connected to the first battery pack. The battery-operated appliance preferably has an interface unit which comprises only one receiving region, wherein the interface unit, in particular the receiving region, is in particular provided for an electrical and mechanical connection to the interface.
An advantageously high flexibility can be achieved by the configuration of the battery system according to the invention. In particular, the battery operated device and the battery pack having the same interface type can be compatible with each other.
It is also proposed that exactly one interface of the second battery pack is at least substantially of the same design as the interface of the first battery pack or the further interface of the first battery pack. Advantageously high flexibility can be achieved, in particular because all appliances and battery packs can comprise at least one common interface type. In particular, the battery operated device and the battery pack having the same interface type can be compatible with each other.
The battery pack according to the invention, the battery-operated device according to the invention, the battery charging system according to the invention and/or the system according to the invention should not be limited to the above-described applications and embodiments. In particular, the battery pack according to the invention, the battery-operated device according to the invention, the battery system according to the invention and/or the system according to the invention can have a number of individual elements, components and units which differs from the number mentioned here in order to achieve the functional manner described here. Furthermore, in the case of the value ranges specified in the disclosure, values within the mentioned limits should also be regarded as being disclosed and can be used arbitrarily.
Drawings
Other advantages are derived from the following description of the figures. Three embodiments of the invention are shown in the drawings. The figures, description and claims contain many combinations of features. The skilled person suitably also observes the features individually and combines them into meaningful further combinations.
The figures show:
FIG. 1 is a schematic illustration of a tool system according to the invention with a battery pack according to the invention and a battery-operated appliance according to the invention,
fig. 2 shows a schematic illustration of a system according to the invention with a battery pack according to the invention, a first battery-operated device according to the invention and a second battery-operated device for connection to only one interface of the battery pack,
FIG. 3 shows a schematic diagram of a battery system according to the invention with a first battery pack according to the invention, a second battery pack comprising only one interface, and a battery-operated device provided for use with the first battery pack and the second battery pack,
fig. 4 shows a schematic detail of a battery pack according to the invention with a connection unit in the region of the interface of the battery pack and the further interface,
fig. 5 shows a schematic detail view of an alternative embodiment of a battery pack according to the invention with a connecting unit in the region of the interface of the battery pack and the further interface, an
Fig. 6 shows a schematic detail view of an alternative embodiment of the battery-operated device according to the invention with a connection unit in the region of the interface unit of the battery-operated device.
Detailed Description
Fig. 1 shows a tool system 10a having a battery pack 12a and a battery-operated device 14 a. Battery-operated tool 14a is in particular designed as a hand-guided power tool. However, other configurations of battery-operated implement 14a and/or tool system 10a are also contemplated. The battery pack 12a is provided in particular for use with a battery-operated device 14a, wherein the battery pack 12a is in particular electrically and mechanically connected to the battery-operated device 14 a.
The battery pack 12a comprises a battery cell 16a for providing a voltage, a further battery cell 18a for providing a further voltage, and a connection unit 20a for electrical and mechanical connection to the battery-operated device 14 a. The battery cell 16a and the further battery cell 18a are each constructed as a cluster of battery cells 22a and each comprise five battery cells 22a connected in series. The battery cell 16a and the further battery cell 18a each comprise a positive pole and a negative pole, via which a voltage and/or a further voltage can be output. However, other configurations of the battery cell 16a and/or the further battery cell 18a are also conceivable, in particular a number of battery cells 22a different from five and/or a connection different from a pure series connection of the battery cells 22 a. Preferably, the potential difference between the two poles of the accumulator unit 16a corresponds to the voltage. Preferably, the potential difference between the two poles of the further battery cell 18a corresponds to the further voltage. In particular, the battery cell 16a and the further battery cell 18a each comprise an electronic unit, which is provided for detecting and/or monitoring the individual cell voltage of the battery cell 22a, wherein the electronic unit is not shown in the figures. Connection unit 20a comprises an interface 24a and a further interface 26a, which are provided for transmitting electrical energy to battery-operated device 14a and are designed to be electrically connected in at least one operating state. The battery pack 12a has a compensation unit (28a, see fig. 4) which is provided to equalize the state of charge of the battery cells and of the further battery cells 18a with one another in at least one operating state.
Interface 24a and further interface 26a each have two contact elements 30a, 32a for transmitting electrical energy, in particular current or voltage, to battery-operated device 14 a. Preferably, the connection unit 20a, in particular the interface 24a and/or the further interface 26a, is provided for applying a voltage, a further voltage and/or a combination of a voltage and a further voltage to the battery-operated device 14a, in particular to the corresponding contact elements 34a, 36a of the battery-operated device 14a, via the contact elements 30a, 32a, in particular in the state in which the battery pack 12a is arranged on the battery-operated device 14 a. Battery operated device 14a, in particular interface unit 33a of battery operated device 14a, has four corresponding contact elements 34a, 36 a. The corresponding contact elements 34a, 36a are electrically connected to a load unit 38a of the battery-operated device 14 a. The consumer unit 38a is designed as an electric motor. However, other configurations of the consumer unit 38a are also conceivable, for example a motor configured differently from an electric motor, a heating element, a lighting element such as a display, a lamp and/or an LED, etc. The contact elements 30a, 32a of the connection unit 20a are configured as tulip contacts. The corresponding contact elements 34a, 36a of the interface unit 33a are configured as plug tongues. However, other configurations of the contact elements 30a, 32a and/or the corresponding contact elements 34a, 36a are also contemplated. Preferably, interface 24a and further interface 26a can be connected to battery-operated device 14a independently of one another. The interface 24a and the further interface 26a are preferably provided for transmitting electrical energy via a voltage applied to the contact elements 30a, 32a and/or a current flowing through the contact elements 30a, 32 a.
Battery pack 12a comprises a protective unit 40a, which is provided to protect interface 24a and/or further interface 26a from contact with objects, dirt and/or damage, in particular in the state in which interface 24a and/or further interface 26a is separated from battery-operated appliance 14 a. In particular, the protection unit 40a is only schematically shown in the figures. The protective unit 40a comprises two protective elements 42a, wherein one of the protective elements 42a is arranged on the interface 24a and the other of the protective elements 42a is arranged on the further interface 26 a. The protective elements 42a are each designed as a sliding cover, which is provided to protect the interface 24a and the further interface 26 a. However, other configurations of the protective unit 40a, in particular of the protective element 42a, are also conceivable, for example in the form of a slide, a film, a cover or the like. The protective element 42a is mounted movably, in particular movably, on the battery pack 12a, in particular on the connection unit 20a and/or the housing unit 44a of the battery pack 12 a. In particular, protective element 42a is provided for being moved into the passive position when battery operated device 14a is electrically and/or mechanically connected to interface 24a and/or further interface 26a, in particular via a non-positive and/or positive connection to battery operated device 14 a. In the passive position, the protective element 42a is arranged at least partially, in particular at least predominantly, at a distance from the interface 24a and/or the further interface 26a, in particular at a distance from the contact elements 30a, 32a of the interface 24a and/or the further interface 26 a. Preferably, the protective element 42a releases the interface 24a and/or the further interface 26a, in particular at least the contact elements 30a, 32a of the interface 24a and/or the further interface 26a, in the passive position, for the transmission of electrical energy to the battery-operated appliance 14 a.
The battery pack 12a comprises a connection unit 46a for combining the voltages of the battery cell 16a and the further battery cell 18a and/or for combining the currents at the interface 24a and/or the further interface 26 a. In at least one operating state of battery pack 12a, interface 24a and further interface 26a can be connected, in particular electrically connected, at least in sections to one another, in particular via a connecting unit 46 a. In particular, the wiring connection unit 46a is described in detail in fig. 4. The battery pack 12a comprises a control and/or regulating unit 47a, which is provided in particular for controlling and/or regulating at least the connection unit 46a and/or the electronics unit of the battery cell 16a and/or the further battery cells 18 a.
The connection unit 20a comprises six signal contact elements 48a, 50a, which are provided to detect, in particular electronically, the type of battery-operated implement 14a and/or the connection configuration of the connection unit 20a when connected to this battery-operated implement 14 a. The signal contact elements 48a, 50a are preferably provided to detect at least one electrical and/or electronic signal of the battery-operated device 14a when connected to the battery-operated device 14a, in order to determine the type of the battery-operated device 14a and/or the connection configuration of the connection unit 20 a. The electrical and/or electronic signals are transmitted to the control and/or regulating unit 47a via the signal contact elements 48a, 50 a. Control and/or regulating unit 47a is preferably provided to determine the type of battery-operated device 14a and/or the connection configuration of connection unit 20a by means of electrical and/or electronic signals when connected to battery-operated device 14 a. Control and/or regulating unit 47a is provided, for example, to read the type of battery-operated device 14a from electrical and/or electronic signals, wherein the electrical and/or electronic signals comprise, in particular, an identification of battery-operated device 14 a. Alternatively or additionally, control and/or regulating unit 47a is provided for determining the connection configuration of connection unit 20a, when connected to battery-operated device 14a, as a function of the electrical and/or electronic signals, the identification of battery-operated device 14a, and/or the signal strength of the electrical and/or electronic signals. Three signal contact elements 48a of the six signal contact elements 48a, 50a are arranged on the interface 24 a. Three further signal contact elements 50a of the six signal contact elements 48a, 50a are arranged on the further interface 26 a. The three signal contact elements 48a are preferably provided for, in the case of a connection of the interface 24a to the battery-operated device 14a connected to this interface 24a, in particular for electronically detecting the type of the battery-operated device 14a connected to the interface 24a and/or the connection configuration of the connection unit 20 a. The further three signal contact elements 50a are preferably provided for, in the case of a connection of the further interface 26a to the further battery-operated device 14a connected to the further interface 26a, in particular for electronically detecting the type of the further battery-operated device 14a connected to the further interface 26a and/or the connection configuration of the connection unit 20 a. Battery-operated device 14a, in particular interface unit 33a, has six corresponding signal contact elements 52a, 54 a. Other configurations of battery-operated device 14a, in particular of interface unit 33a, are also conceivable, in particular having a number of corresponding signal contact elements 52a, 54a different from six, preferably at least four corresponding signal contact elements 52a, 54 a. The signal contact elements 48a, 50a are provided for detecting the type of the battery-operated implement 14a and/or the connection configuration of the connection unit 20a when connected to the battery-operated implement 14a as a function of the electrical contact of the signal contact elements 48a, 50a with the corresponding signal contact elements 52a, 54a of the battery-operated implement 14 a. The control and/or regulating unit 47a is provided in particular for detecting an electrical contact of the signal contact elements 48a, 50a, in particular in the case of connection with the corresponding signal contact elements 52a, 54 a. The signal contact elements 48a, 50a are configured as tulip contacts. The corresponding signal contact elements 52a, 54a are designed as plug tongues. However, other configurations of the signal contact elements 48a, 50a and/or the corresponding signal contact elements 52a, 54a are also contemplated.
The interface 24a has a connection area 54 a. The further interface 26a has a further connection region 56 a. The connection region 54a and the further connection region 56a are spatially separated from one another and are provided for a force-locking and/or form-locking connection with the battery-operated implement 14 a. The connection region 54a and/or the further connection region 56a are formed integrally with the housing unit 44 a. The contact elements 30a and the signal contact elements 48a of the interface 24a are arranged on the connection region 54 a. The contact elements 32a and the signal contact elements 50a of the further interface 26a are arranged on the further connection region 56 a. It is conceivable for the connection region 54a and/or the further connection region 56a to have in particular in each case at least one fastening element, wherein in particular the fastening elements are not shown in the figures. The fastening element is preferably part of a fastening unit of the battery pack 12a and/or of the battery-operated device 14a, which is provided for fastening the battery pack 12a to the battery-operated device 14 a. The fastening element is designed, for example, as a detent element, undercut, form-locking notch, magnetic element, etc. The interface 24a, in particular the connection region 54a, is designed as a sliding insert. The further interface 26a, in particular the further connection region 56a, is designed as a plug-in part. In particular, the connection 24a and the further connection 26a are constructed to be structurally identical, at least for the most part, in particular with regard to the outer geometry. Preferably, the connecting region 54a and the further connecting region 56a are at least for the most part of the same design, in particular with regard to the outer geometry. The connecting region 54a and the further connecting region 56a each have two form-locking projections 58a which are designed as guide rails. The form-locking projections 58a are provided for cooperating with two form-locking notches 60a of the battery operating device 14a, in particular for connecting the battery pack 12a to the battery operating device 14a, in particular for being moved into the form-locking notches 60a of the battery operating device 14 a.
The battery pack 12a comprises a housing unit 44a, wherein the interface 24a and the further interface 26a are arranged on the housing unit 44a offset from one another, in particular at least substantially parallel to one another, in an offset direction 64a relative to a center axis 62a of the housing unit 44 a. The housing unit 44a encloses at least the battery cell 16a, the further battery cell 18a, the control and/or regulating unit 47a and the connection unit 46a at least predominantly, in particular at least substantially completely. Offset direction 64a extends along an axis oriented at least substantially parallel to, or at least substantially perpendicular to, central axis 62 a. The connection region 54a and the further connection region 56a are arranged offset from one another, in particular at least substantially parallel to one another, in the offset direction 64a relative to the center axis 62a of the housing unit 44 a. The form-locking projections 58a of the port 24a and the form-locking projections 58a of the further port 26a are arranged offset from one another, in particular at least substantially parallel to one another, in the offset direction 64a relative to the center axis of the housing unit 44 a. The tool system 10a, in particular the battery 12a and/or the interface 24a and the further interface 26a, have a connection direction 66a, wherein the battery pack 12a can be connected to the battery-operated device 14a, in particular, by a movement in the connection direction 66 a. Offset direction 64a is oriented at least substantially perpendicular to connection direction 66 a.
Battery operated device 14a has four counter contact elements 34a, 36a, which are designed to correspond to contact elements 30a, 32a of interface 24a and/or further interface 26a of battery pack 12 a. The interface unit 33a comprises a receiving region 68a and a further receiving region 70a, wherein in particular two of the four counter contact elements 34a, 36a are arranged at least partially within the receiving region 68a and the other two of the four counter contact elements 34a, 36a are arranged at least partially within the further receiving region 70 a. Three of the six corresponding signal contact elements 52a, 54a are disposed within the receiving area 68 a. Three other corresponding signal contact elements 54a of the six corresponding signal contact elements 52a, 54a are arranged within the other receiving area 70 a. In particular, two counter contact elements 34a are preferably provided for cooperating, in particular being placed in electrical contact, with two contact elements 30a of interface 24a, in particular for connecting battery-operated device 14a to battery pack 12 a. Preferably, two further corresponding contact elements 36a are provided for cooperating, in particular being placed in electrical contact, with two contact elements 32a of the further interface 26a, in particular for connecting the battery-operated device 14a to the battery pack 12 a. The receiving region 68a, in particular at least one receiving surface 74a of the battery-operated device 14a arranged within the receiving region 68a, is formed in a manner corresponding to the connecting region 54a of the interface 24 a. In particular, at least one contact surface 72a of the connection region 54a of the interface 24a contacts the receiving region 68a, in particular a receiving surface 74a of the battery operating device 14a, in the connected state of the battery operating device 14a to the battery pack 12 a. The further receiving region 70a, in particular at least one further receiving surface 76a of the battery-operated device 14a arranged within the further receiving region 70a, is formed in a manner corresponding to the further connecting region 56a of the further interface 26 a. In particular, at least one contact surface 78a of the further connection region 56a of the further interface 26a contacts the further receiving region 70a, in particular the further receiving surface 76a, in the connected state of the battery-operated device 14a to the battery pack 12 a. The receiving region 68a and the further receiving region 70a, in particular the two counter-contact elements 34a and the other two counter-contact elements 36a, are arranged offset from one another in at least one direction, in particular at least substantially perpendicular, to the receiving direction 80a of the battery running gear 14 a. In the state of connection of battery powered device 14a to battery pack 12a, receiving direction 80a is formed at least substantially parallel to the connection direction of interface 24a and further interface 26 a. The interface unit 33a comprises four form-locking notches 60a, which are configured as lateral recesses, wherein two of the form-locking notches 60a are arranged within the receiving region 68a and two further of the form-locking notches 60a are arranged within the further receiving region 70 a. Battery operated appliance 14a includes a control unit 82 a. The corresponding signal contact elements 52a, 54a are electrically connected with the control unit 82 a. The control unit 82a is preferably provided for transmitting electrical and/or electronic signals via the corresponding signal contact elements 52a, 54 a. The electrical and/or electronic signals of the control unit 82a are provided in particular for transmitting information about the type of the battery operated device 14a and/or the connection configuration of the connection unit 20a of the battery pack 12a, which is predefined via the interface unit 33a, to the signal contact elements 48a, 50a of the battery pack 12a, in particular the control and/or regulating unit 47a, when the battery pack 12a is connected.
Fig. 2 shows a system 84a with a first battery operated device 14a, a second battery operated device 86a and a battery pack 12 a. Second battery operating device 86a is provided for electrical and mechanical connection to only one interface of battery pack 12a, in particular interface 24 a. First battery operated device 14a is provided for electrical and mechanical connection to interface 24a and further interface 26a of battery pack 12 a. The second battery operator control device 86a has one, in particular exactly one, receiving region 88a, which is designed at least substantially identically to the receiving region 68a of the first battery operator control device 14a and is provided, in particular, for receiving the interface 24a of the battery pack 12a at least in part. In particular, in the operating state connected to battery pack 12a, second battery operating device 86a is electrically connected to battery pack 12a only via interface 24a, wherein further interface 26a is in particular designed separately from second battery operating device 86 a. The first battery powered device 14a is preferably electrically connected to the battery pack 12a via the interface 24a and the further interface 26a in the operating state connected to the battery pack 14 a. The signal contact element 48a and the further signal contact element 50a are provided, for example, for: if only the signal contact elements 48a are in contact with the respective signal contact elements 52a, 54a, in particular if the battery pack 12a is connected to the second battery-operated device 86a, then a battery-operated device which is compatible only with the interface 24a is detected as a type of battery-operated device, and/or a connection configuration which uses only the interface 24a for energy transmission is detected as a connection configuration of the connection unit 20 a. The first battery operated device 14a has, in particular, a consumer voltage of 36V, wherein, in particular, a supply voltage of 36V can be applied to the first battery operated device 14a via the interface 24a of the battery pack 12a and the further interface 26 a. The second battery operating device 86a preferably has a load voltage of 18V, in particular, a supply voltage of 18V can be applied to the second battery operating device 86a via the interface 24a of the battery pack 12 a. However, it is also conceivable, in particular when the first battery-operated device 14a has a consumer voltage of 18V, for the first battery-operated device 14a to be supplied with 18V via the interface 24a and the further interface 26a, in particular separately from one another, wherein the battery unit 16a and the further battery unit 18a are connected, in particular, in parallel. Preferably, in the case of a parallel connection of the battery cell 16a and the further battery cell 18a, a current of maximum 70A, preferably maximum 90A and particularly preferably maximum 100A flows via the interface 24a and the further interface 26a via the contact elements 30A, 32a, respectively.
Fig. 3 shows a battery system 90a, which has a further, in particular second battery-operated device 86a and in particular a first battery pack 12a and a second battery pack 92 a. Second battery pack 92a has precisely one interface 94a, which is at least substantially identical in design to interface 24a of first battery pack 12 a. However, it is also conceivable for this precisely one interface 94a of the second battery pack 92a to be of at least substantially identical design to the further interface 26a of the first battery pack 12 a. A further battery operating device 86a is provided for electrical and mechanical connection to first battery pack 12a and second battery pack 92 a. In particular, interface 24a of first battery pack 12a is provided for transmitting electrical energy to a further battery-operated device 86a independently of further interface 26a in at least one operating state. The further battery-operated device 86a has an interface unit 96a, which comprises only one receiving region 98a, wherein the interface unit 33a, in particular the receiving region 98a, is in particular provided for electrical and mechanical connection to the interface 24 a. Preferably, in the operating state in which the additional battery-operated device 86a is connected to the first battery pack 12a, it is electrically connected to the first battery pack 12a only via the interface 24 a. In particular, in the operating state in which the further battery-operated device 86a is connected to the first battery pack 12a, the interface 24a of the first battery pack 12a is designed separately from the further battery-operated device 86 a. The further battery-operated device 86a has, in particular, a load voltage of 18V, wherein, in particular, via the interface 24a of the first battery pack 12a or the second battery pack 92a, a supply voltage of 18V can be applied to the further battery-operated device 86 a.
In fig. 4, the battery pack 12a is shown in detail in the region of the terminal unit 46 a. Fig. 4 shows a schematic circuit diagram of the connection unit 46 a. The connection unit 46a is provided for connecting the battery cell 16a and the further battery cell 18a for adapting and/or supplying the voltage applied to the interface 24a and/or the further interface 26 a. Preferably, the compensation unit 28a is configured as part of the connection unit 46 a. The compensation unit 28a is provided in particular for connecting the battery cell 16a and the further battery cell 18a in at least one operating state in such a way that a compensation current flows between the battery cell 16a and the further battery cell 18 a. The control and/or regulating unit 47a of the battery pack 12a is provided for controlling and/or regulating at least the connection unit 46a, in particular as a function of the battery-operated device 14a connected to the battery pack 12a, in particular to the interface 24a and/or the further interface 26a, as a function of the state of charge of the battery unit 16a and/or the further battery unit 18a, etc. The connection unit 46a preferably comprises electrical lines which connect the contact elements 30a, 32a of the interface 24a and/or of the further interface 26a to the battery cell 16a and/or to the further battery cell 18a, in particular to the poles of the battery cell 16a and/or of the further battery cell 18 a. Each of the contact elements 30a, 32a of the interface 24a and the further interface 26a is connected to at least one pole of the battery cell 16a and/or the further battery cell 18a, respectively.
The connection unit 46a comprises two switching elements 100a, wherein the switching elements 100a are provided to electrically connect the interface 24a and the further interface 26a to the battery unit 16a and/or the further battery unit 18a, respectively, depending on the type of the battery-operated device 14a and/or the connection configuration of the connection unit 20 a. The connection unit 46a is preferably provided to adapt the voltage provided at the interface 24a and the further interface 26a, in particular by means of the switching element 100a, depending on the type of the battery-operated appliance 14a and/or the connection configuration of the connection unit 20 a. The switching elements 100a are arranged in particular in circuit terms between the battery cells 16a or the further battery cells 18a, in particular between one pole of the battery cells 16a or one pole of the further battery cells 18a, and between the contact elements 30a of the interface 24a or the contact elements 32a of the further interface 26a, respectively. One of the two switching elements 100a is arranged, in particular in terms of circuitry, between the positive pole of the battery cell 16a and the positive pole of the further battery cell 18 a. The other of the two switching elements 100a is arranged, in particular in terms of circuitry, between the negative pole of the battery cell 16a and the negative pole of the further battery cell 18 a. The switching element 100a is preferably provided for connecting the battery cell 16a and the further battery cell 18a in parallel via the contact elements 0a, 32a of the interface 24a and the further interface 26a, in particular in at least one operating state, preferably in the closed state of the switching element 100 a. The switching element 100a is preferably provided for connecting the battery cell 16a to the contact element 30a of the interface 24a, in particular in at least one operating state, preferably in the open state of the switching element 100a, and for connecting the further battery cell 18a to the contact element 32a of the further interface 26a, in particular separately therefrom. In particular, the battery cell 16a is connected, in particular permanently, to the contact element 30a of the interface 24a independently of the switching element 100 a. The further battery cell 18a is preferably connected, in particular permanently, to the contact element 32a of the further interface 26a independently of the switching element 100 a. The switching element 100a is part of the compensation unit 28a, the switching element 100a being provided in particular to realize a compensation current between the battery cell 16a and the further battery cell 18a in the closed state. Particularly preferably, the switching elements 100A are each provided for conducting a maximum average value of the current of at least 70A, preferably at least 90A and particularly preferably at least 100A, wherein the switching elements 100A have in particular an unlimited functionality, in particular remain undamaged. Preferably, the switching elements 100A are each provided to conduct a maximum current of at least 220A, preferably at least 270A and particularly preferably at least 300A, wherein the switching elements 100A have in particular an unlimited functionality, in particular remain undamaged. The switching element 100a is configured as an electronic switching element. For example, the switching element 100a is configured as a MOSFET switch, a switching relay, an IGBT, a reed switch, a capacitance switch, or the like. The control and/or regulating unit 47a is provided in particular for switching (i.e. switching) the switching element 100a, in particular when the battery pack 12a is connected to the battery operated device 14a, depending on the type of the battery operated device 14a and/or the connection configuration of the connection unit 20 a. However, other configurations of the switching element 100a and/or the further switching element 102a are also conceivable.
If the battery pack 12a is connected to a battery-operated device, for example to the battery-operated device 86a, which has a load voltage corresponding to the supply voltage of the battery unit 16a, the battery pack 12a is connected to the battery-operated device, in particular via the interface 24 a. The type of battery-operated device and the connection configuration of the connection unit 20a, in which only the interface 24a is connected to the battery-operated device, are detected and transmitted to the control and/or regulating unit 47a via the signal contact elements 48a arranged on the connection region 54a, in particular when the battery pack 12a is electrically and mechanically connected to the battery-operated device. The control and/or regulating unit 47a actuates the switching elements 100a such that they are closed, in particular switched on at a low resistance, the battery cell 16a and the further battery cells being operated in parallel.
For example, if the battery pack 12a is connected to a battery-operated device 14a, for example, having a consumer voltage of 18V, the switching element 100a is not closed. The battery-operated device 14a is supplied with electrical power via the interface 24a and the further interface 26, in particular with 18V of the battery unit 16a and the further battery unit 18a, respectively, wherein the interface 24a and the further interface 26 are in particular designed without direct electrical connection.
Fig. 5 and 6 show further exemplary embodiments of the invention, the following description and the drawings being essentially limited to the differences between the exemplary embodiments, wherein reference can in principle also be made to the drawings and/or descriptions of the other exemplary embodiments, in particular fig. 1 to 4, with regard to components having the same designation, in particular with regard to components having the same reference numerals. To distinguish the embodiments, the letter a is placed after the reference numerals of the embodiments of fig. 1 to 4. In the embodiment of fig. 5 and 6, the letter a is replaced by letters b and c.
Fig. 5 shows an alternative configuration of the battery pack 12b in a detail view in the region of the terminal unit 46b of the battery pack 12 b. The battery pack 12b comprises a battery cell 16b for providing a voltage, a further battery cell 18b for providing a further voltage, and a connection unit 20b, the battery cell 16b comprising at least one battery cell 22b, the further battery cell 18b comprising at least one battery cell 22b, the connection unit 20b being used for electrical and mechanical connection to at least one battery-operated device 14b, in particular a battery-operated tool. Connection unit 20b comprises an interface 24b and a further interface 26b, which are provided for transmitting electrical energy to battery-operated device 14b and are designed to be electrically unconnected, in particular to each other, in at least one operating state. The battery pack 12b shown in fig. 5 has a configuration at least substantially similar to the battery pack 12a described in the description of fig. 1 to 4, so that at least substantially the description of fig. 1 to 4 can be referred to with respect to the configuration of the battery pack 12b shown in fig. 5. Unlike the battery pack 12a described in the description of fig. 1 to 4, the battery pack 12b shown in fig. 5 preferably has a connection unit 46b, which comprises two switching elements 100b and a further switching element 102 b.
The further switching element 102b is preferably provided for connecting the battery unit 16b and the further battery unit 18b in series via the contact element 30b of the interface 24b, in particular in at least one operating state in which the further switching element 102b is closed and both switching elements 100b are open. The further switching element 102b is preferably provided for connecting the battery unit 16b and the further battery unit 18b in parallel via the contact elements 30b, 32b of the interface 24b and the further interface 26b, in particular in at least one operating state in which the further switching element 102b is open and both switching elements 100b are closed. The further switching element 102b is arranged in particular in circuit terms between the two contact elements 30b of the interface 24b and the two contact elements 32b of the further interface 26 b. The further switching element 102b is arranged in particular in terms of circuitry between the negative pole of the battery cell 16b and the positive pole of the further battery cell 18 b. The further switching element 102b is designed as an electronic switching element. The further switching element 102b is configured, for example, as a MOSFET switch, a switching relay, an IGBT, a reed switch, a capacitive switch, or the like. The two switching elements 100b and the further switching element 102b are provided for electrically connecting the interface 24b and the further interface 26b to the battery unit 16b and/or the further battery unit 18b, respectively, depending on the type of the battery-operated device 14b and/or the connection configuration of the connection unit 20 b. The terminal unit 46b is designed in such a way that each contact element 30b, 32b of the interface 24b and the further interface 26b can be connected to at least one pole of the battery cell 16b and to at least one pole of the further battery cell 18b, respectively. Preferably, the switching element 100b and/or the further switching element 102b are provided for detachably connecting one of the contact elements 30b, 32b of the interface 24b and the further interface 26b to one pole of the battery cell 16b and to one pole of the further battery cell 18b, respectively. Particularly preferably, the switching element 100b and the further switching element 102b are each provided for conducting a maximum average value of the current of at least 70A, preferably at least 90A and particularly preferably at least 100A, wherein the switching element 100b and the further switching element 102b have in particular an unlimited functionality, in particular remain undamaged. Preferably, the switching element 100b and the further switching element 102b are each provided for conducting a maximum current of at least 220A, preferably at least 270A and particularly preferably at least 300A, wherein the switching element 100b and the further switching element 102b have in particular an unlimited functionality, in particular remain undamaged.
If the battery pack 12b is connected to the battery operated device 14b having a consumer voltage of 36V, the switching element 100b is opened by the control and/or regulating unit 47b of the battery pack 12b and the further switching element 102b is closed, wherein in particular the battery unit 16b and the further battery unit 18b, each having a supply voltage of 18V, are connected in particular in series.
Fig. 6 shows an alternative embodiment of battery-operated device 14 c. Battery-operated tool 14c is designed as a battery-operated machine tool. However, other configurations of battery-operated device 14c are also conceivable. Battery operated device 14c is provided for use with battery pack 12c described in fig. 1 to 5. However, it is also conceivable for the battery pack 12c to be designed such that the battery cells 16c of the battery pack 12c are directly connected to the contact elements 30c of the interface 24c of the connection unit 20c of the battery pack 12c and the further battery cells 18c of the battery pack 12c are directly connected to the contact elements 32c of the further interface 26c of the connection unit 20c of the battery pack 12c, wherein the battery cells 16c and the further battery cells 18c are in particular designed without direct electrical connection. Battery operated device 14c comprises an interface unit 33c, which comprises four counter contact elements 34c, 36c, wherein counter contact elements 34c, 36c are provided for connection to interface 24c of connection unit 20c of battery pack 12c and to contact element 30c of further interface 26c for receiving electrical energy. Battery operated device 14c shown in fig. 6 has a configuration at least substantially similar to battery operated device 14a described in the description of fig. 1 to 4, so that at least substantially the description of fig. 1 to 4 can be referred to with respect to the configuration of battery operated device 14c shown in fig. 6. In contrast to the battery-operated device 14a described in the description of fig. 1 to 4, the battery-operated device 14c shown in fig. 6 preferably has a connection unit 46c, which is provided for connecting the corresponding contact elements 34c, 36c in order to combine the voltages and/or currents applied via the interface 24c and the further interface 26 c.
The battery-operated device 14c comprises a consumer unit 38c, which is in particular designed as a motor. However, other configurations of the consumer unit 38c are also conceivable, in particular as heating elements, lighting elements, etc. The connection unit 46c has two switching elements 100c and one further switching element 102 c. The connection unit 46c of the battery-operated device 14c is preferably provided for switching the switching element 100c and/or the further switching element 102c of the connection unit 46c of the battery-operated device 14c as a function of the voltage applied to the counter contact elements 34c, 36c and/or the current transmitted via the counter contact elements 34c, 36c and as a function of the voltage and/or current demand characteristic of the load unit 38 c. In particular, the connection unit 46c of the battery-operated device 14c is constructed at least substantially identically to the connection unit 46b of the battery pack 12b depicted in fig. 5. In particular, the connection unit 46c is provided for connecting the corresponding contact elements 34c, 36c to one another as a function of the characteristic quantity of the voltage and/or current demand of the consumer unit 38 c. The switching elements 100c of the connection unit 46c of the battery-operated device 14c are in particular arranged in circuit terms between an electrical connection 104c of the load unit 38c and at least one of the corresponding contact elements 34c, 36c of the interface unit 33 c. The further switching element 102c is arranged in particular in circuit terms between two of the corresponding contact elements 34c, 36c of the interface unit 33c and between two electrical connections 104c of the consumer unit 38 c. The further switching element 102c is preferably provided to connect the voltages of the rechargeable battery unit 16c and the further rechargeable battery unit 18c, which are applied separately to the corresponding contact elements 34c, 36c, in series and to apply them to the consumer unit 38c in at least one operating state, preferably in the open state of the switching element 100c and in the closed state of the further switching element 102 c. The switching element 100c is preferably provided to connect the voltage of the accumulator unit 16c and the further accumulator unit 18c, which is applied separately to the corresponding contact elements 34c, 36c, in parallel and to apply it to the consumer unit 38c in at least one operating state, preferably in the open state of the further switching element 102c and in the closed state of the two switching elements 100 c.

Claims (14)

1. A battery pack is provided with:
at least one battery cell (16 a; 16 b; 16c) for providing a voltage, comprising at least one battery cell (22 a; 22 b);
at least one further battery cell (18 a; 18 b; 18c) for providing a further voltage, comprising at least one battery cell (22 a; 22b), and
at least one connection unit (20 a; 20 b; 20c) for electrical and mechanical connection to at least one battery-operated device (14 a; 14 b; 14c), in particular a battery-operated tool,
it is characterized in that the preparation method is characterized in that,
the connection unit (20 a; 20 b; 20c) comprises at least one interface (24 a; 24 b; 24c) and at least one further interface (26 a; 26 b; 26c), which are provided for transmitting electrical energy to the battery-operated device (14 a; 14 b; 14c) and are designed to be directly electrically disconnected in at least one operating state.
2. Storage battery pack according to claim 1, characterized in that the interface (24 a; 24 b; 24c) and the further interface (26 a; 26 b; 26c) each comprise at least two contact elements (30a, 32 a; 30b, 32 b; 30c, 32c), wherein each of the contact elements (30a, 32 a; 30b, 32 b; 30c, 32c) of the interface (24 a; 24 b; 24c) and the further interface (26 a; 26 b; 26c) is connected to at least one pole of the battery cells (16 a; 16 b; 16c) and/or the further battery cells (18 a; 18 b; 18c), respectively.
3. Battery pack according to claim 1 or 2, characterised in that at least one connection unit (46 a; 46b) is provided for combining the voltages of the battery cells (16 a; 16b) and the further battery cells (18 a; 18b) and/or for combining the currents at the interface (24 a; 24b) and/or the further interface (26 a; 26 b).
4. Battery pack according to one of the preceding claims, characterised in that the connection unit (20 a; 20 b; 20c) comprises at least one signal contact element (48a, 50a) which is provided for detecting the type of battery-operated appliance (14 a; 14 b; 14c) and/or the connection configuration of the connection unit (20 a; 20 b; 20c) when connected to the battery-operated appliance (14 a; 14 b; 14c), in particular electronically.
5. Battery pack according to at least claim 3, characterized in that the connection unit (46 a; 46b) comprises at least one switching element (100a, 102 a; 100b, 102b) which is provided for electrically connecting the interface (24 a; 24b) and the further interface (26 a; 26b) to the battery unit (16 a; 16b) and/or the further battery unit (18 a; 18b), respectively, depending on the type of battery-operated appliance (14 a; 14b) and/or the connection configuration of the connection unit (20 a; 20 b).
6. Battery pack according to one of the preceding claims, characterised in that the interface (24 a; 24 b; 24c) has at least one connection region (54a) and the further interface (26 a; 26 b; 26c) has at least one further connection region (56a), wherein the connection region (54a) and the further connection region (56a) are spatially separate from one another and are provided for a force-fitting and/or form-fitting connection with the battery-operated device (14 a; 14 b; 14 c).
7. Battery pack according to one of the preceding claims, characterised by at least one housing unit (44a), wherein the interface (24 a; 24 b; 24c) and the further interface (26 a; 26 b; 26c) are arranged on the housing unit (44a) offset from one another in an offset direction (64a), in particular at least substantially parallel to one another, with respect to a central axis (62a) of the housing unit (44 a).
8. Battery pack according to at least claim 3, characterized in that the interface (24 a; 24b) and the further interface (26 a; 26b) each comprise at least two contact elements (30a, 32 a; 30b, 32b), wherein the connection unit (46 a; 46b) is designed such that each contact element (30a, 32 a; 30b, 32b) of the interface (24 a; 24b) and the further interface (26 a; 26b) can be connected to at least one pole of the battery cell (16 a; 16b) and at least one pole of the further battery cell (18 a; 18b), respectively.
9. Battery-operated device, in particular battery-operated machine tool, for use with at least one battery pack (12 a; 12 b; 12c) according to one of claims 1 to 8, having at least one interface unit (33 a; 33c) comprising at least four counter-contact elements (34a, 36 a; 34b, 36 b; 34c, 36c), wherein the counter-contact elements (34a, 36 a; 34b, 36 b; 34c, 36c) are provided for electrical connection to the contact elements (30a, 32 a; 30b, 32 b; 30c, 32c) of the interface unit (20 a; 20 b; 20c) and/or of the further interface (26 a; 26 b; 26c) of the battery pack (12 a; 12 b; 12c), in order to receive electrical energy.
10. Battery operated appliance according to claim 9, characterized in that at least one wiring unit (46c) is provided which is provided for wiring the corresponding contact element (34c, 36c) for combining the voltages and/or the currents applied via the interface (24c) and the further interface (26 c).
11. Tool system having at least one battery pack (12 a; 12 b; 12c) according to one of claims 1 to 8 and at least one battery-operated device (14 a; 14 b; 14c) according to claim 9 or 10.
12. A system, having:
at least one first battery-operated device (14 a; 14 b; 14c), in particular a first battery-operated machine tool, in particular according to claim 9 or 10,
-at least one second battery-operated appliance (86a), and
-at least one battery pack (12 a; 12 b; 12c) according to any one of claims 1 to 8,
wherein the second battery-operated device (86a) is provided for an electrical and mechanical connection to only one interface (24 a; 24 b; 24c) of the battery pack (12 a; 12 b; 12c), and the first battery-operated device (14 a; 14 b; 14c) is provided for an electrical and mechanical connection to the interface (24 a; 24 b; 24c) of the battery pack (12 a; 12 b; 12c) and to the further interface (26 a; 26 b; 26 c).
13. A battery system includes:
-at least one battery-operated device (14a, 86 a; 14 b; 14c), in particular according to claim 9 or 10,
-at least one first battery pack (12 a; 12 b; 12c), which is a battery pack according to any one of claims 1 to 8, and,
-at least one second battery pack (92a),
wherein the second battery pack (92a) has exactly one interface (94a), and wherein the battery-operated device (14a, 86 a; 14 b; 14c) is provided for electrical and mechanical connection to the first battery pack (12 a; 12 b; 12c) and the second battery pack (92 a).
14. Accumulator system according to claim 13, characterized in that the exactly one interface (94a) of the second accumulator battery (92a) is at least substantially identically constructed to the interface (24 a; 24 b; 24c) of the first accumulator battery (12 a; 12 b; 12c) or to the further interface (26 a; 26 b; 26c) of the first accumulator battery (12 a; 12 b; 12 c).
CN202011072042.8A 2019-10-02 2020-10-09 Battery pack, battery-operated appliance, tool system, system and battery system Pending CN112688030A (en)

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DE102019215202.3A DE102019215202A1 (en) 2019-10-02 2019-10-02 Battery pack, battery-operated device, tool system, system and battery system

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CN101521265A (en) * 2008-10-10 2009-09-02 比亚迪股份有限公司 Power battery pack for electric vehicle and battery system thereof
US20130005196A1 (en) * 2011-06-28 2013-01-03 GM Global Technology Operations LLC Serviceable electrical connection and method
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