CN108461847B - Battery module and battery management system - Google Patents
Battery module and battery management system Download PDFInfo
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- CN108461847B CN108461847B CN201810119315.6A CN201810119315A CN108461847B CN 108461847 B CN108461847 B CN 108461847B CN 201810119315 A CN201810119315 A CN 201810119315A CN 108461847 B CN108461847 B CN 108461847B
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- 238000001514 detection method Methods 0.000 claims abstract description 41
- 239000007788 liquid Substances 0.000 claims description 25
- 238000001816 cooling Methods 0.000 claims description 15
- 239000000110 cooling liquid Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 11
- 238000007726 management method Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
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- 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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
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- 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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
-
- 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
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to the field of safety detection of power supply devices, in particular to a battery module and a battery management system. The battery module comprises a plurality of sub-modules, each sub-module comprises a fixing piece and two soft package batteries arranged on the fixing piece, a temperature detection device is arranged between the two soft package batteries and connected to the fixing piece through an elastic connecting piece, and the temperature detection device is used for detecting temperature values of the two soft package batteries. The battery management system comprises a processor and the battery module, wherein the processor is communicated with a pressure sensor device of the battery module. The battery module and the battery management system provided by the embodiment of the invention can timely detect whether the soft-packaged battery is out of control, is punctured and other abnormal conditions accompanied by high temperature, and in addition, the temperature detection device is connected with the fixing piece through the elastic connecting piece, so that the temperature detection device can still be closely attached to the soft-packaged battery under the condition that the soft-packaged battery is expanded, and the accuracy of a detection result is ensured.
Description
Technical Field
The invention relates to the field of safety detection of power supply devices, in particular to a battery module and a battery management system.
Background
The battery is an energy core of the electric automobile and provides power for running of the electric automobile, wherein the battery comprises a soft package battery, and the soft package battery refers to a battery with a soft package material (for example, an aluminum-plastic composite film) as a shell. The soft package battery has the advantages of light weight, large capacity, small internal resistance, high safety performance, flexible design and the like, and in the use process of the soft package battery, abnormal conditions such as thermal runaway, puncture and the like which are accompanied with high temperature can possibly occur, so that how to timely detect whether the soft package battery has the abnormal conditions or not so as to take countermeasures in time becomes a technical problem to be solved urgently in the field of safety detection of power supply devices.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a battery module and a battery management system for solving the above-mentioned problems.
The embodiment of the invention provides a battery module, which comprises a plurality of sub-modules, wherein each sub-module comprises a fixing piece and two soft package batteries arranged on the fixing piece, a temperature detection device is arranged between the two soft package batteries and is connected to the fixing piece through an elastic connecting piece, and the temperature detection device is used for detecting the temperature values of the two soft package batteries.
Further, the battery module further comprises a liquid cooling pipe, and the liquid cooling pipe is arranged in the plurality of sub-modules in a roundabout manner so as to isolate two adjacent sub-modules.
Further, the battery module further comprises a controller, wherein the controller is connected with the temperature detection device to obtain a temperature value detected by the temperature detection device, and the flow rate of the cooling liquid in the liquid cooling pipe is adjusted according to the received temperature value.
Further, the battery module further comprises an alarm, the alarm is connected with the controller, and the alarm is used for receiving an alarm signal generated by the controller when judging that a temperature value greater than a preset temperature threshold exists in the received temperature values, so as to send out an alarm.
Further, the sub-module further comprises a pressure detection device, the pressure detection device is arranged between the two soft package batteries, and the pressure detection device is used for detecting a pressure value between the two soft package batteries and sending the pressure value to the controller, so that when the controller judges that a pressure value larger than a preset pressure threshold exists in the received pressure value, an alarm signal is generated and sent to the alarm, and the alarm gives an alarm.
Further, the temperature detection devices arranged between the two soft package batteries are multiple, and the temperature detection devices are distributed between the two soft package batteries.
Further, the fixing piece is a fixing frame with a rectangular frame structure, and the two soft package batteries installed on the fixing frame are located in the fixing frame.
Further, the sub-module further comprises an electrode plate group, the electrode plate group comprises a positive electrode plate and a negative electrode plate, the positive electrode plate is arranged on the fixing piece of the sub-module, the positive electrode plate is respectively connected with the positive electrodes of the two soft package batteries of the sub-module, the negative electrode plate is arranged on the fixing piece of the sub-module, and the negative electrode plate is respectively connected with the negative electrodes of the two soft package batteries of the sub-module.
Further, a plurality of submodules are sequentially arranged, and two adjacent submodules are attached to form a battery module body comprising a first end part and a second end part, the battery module further comprises two end fixing plates, and the two end fixing plates are respectively arranged at the first end part and the second end part of the battery module body to fix the battery module body.
The embodiment of the invention also provides a battery management system, which comprises a processor and a battery module, wherein the battery module comprises a plurality of sub-modules, each sub-module comprises a fixing piece and two soft package batteries arranged on the fixing piece, a temperature detection device is arranged between the two soft package batteries and is connected with the fixing piece through an elastic connecting piece, the temperature detection device is used for detecting the temperature values of the two soft package batteries, and the processor is communicated with the temperature detection device of the battery module.
According to the battery module and the battery management system provided by the embodiment of the invention, the temperature detection device is arranged between the two soft package batteries of each sub-module, the temperature detection device is connected with the fixing piece through the elastic connecting piece, and can timely detect whether the soft package batteries are out of control and are punctured or not and the abnormal conditions accompanied by high temperature are caused.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a battery module according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a sub-module according to an embodiment of the present invention.
Fig. 3 is an assembly schematic diagram of a sub-module and a temperature detecting device according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of another view of the sub-module shown in fig. 2.
Fig. 5 is a schematic view illustrating another structure of a battery module according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a liquid-cooled tube according to an embodiment of the present invention.
Fig. 7 is a schematic view illustrating another structure of a battery module according to an embodiment of the present invention.
Fig. 8 is a schematic diagram of a partial electrical connection relationship of a battery module according to an embodiment of the present invention.
Fig. 9 is another assembly schematic diagram of a sub-module and a temperature detecting device according to an embodiment of the present invention.
Fig. 10 is an assembly schematic diagram of a sub-module, a temperature detecting device and a pressure detecting device according to an embodiment of the present invention.
Fig. 11 is a schematic diagram illustrating another electrical connection relationship between parts of a battery module according to an embodiment of the present invention.
Fig. 12 is another assembly schematic diagram of a sub-module, a temperature detecting device and a pressure detecting device according to an embodiment of the present invention.
Icon: 10-a battery module; 100-sub-modules; 110-fixing piece; 111-positioning protrusions; 112-positioning holes; 120-soft package battery; 130-electrode sheet set; 131-positive plate; 132-a negative plate; 200-a temperature detection device; 300-elastic connection piece; 400-a battery module body; 410-a first end; 420-a second end; 500-fixing holes; 600-end fixing plates; 700-liquid cooling tube; 710-a liquid inlet tube; 720-a liquid outlet pipe; 730-liquid cooling flat tube; 740-solenoid valve; 800-a controller; 900-alarm; 1000-pressure detection device.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
Referring to fig. 1, 2 and 3, an embodiment of the present invention provides a battery module 10, where the battery module 10 includes a plurality of sub-modules 100, the sub-modules 100 include a fixing member 110 and two soft pack batteries 120 mounted on the fixing member 110, a temperature detection device 200 is disposed between the two soft pack batteries 120, the temperature detection device 200 is connected to the fixing member 110 through an elastic connection member 300, and the temperature detection device 200 is used for detecting temperature values of the two soft pack batteries 120.
In this embodiment, since the temperature detecting device 200 is connected to the fixing member 110 through the elastic connecting member 300, the temperature detecting device 200 can still be closely attached to the soft pack battery 120 when the soft pack battery 120 is expanded, thereby ensuring the accuracy of the detection result. The temperature detecting device 200 may be a terminal type temperature sensor or a drop type temperature sensor, and the elastic connector 300 may be a spring, a shrapnel, etc., which is not particularly limited in this embodiment.
In this embodiment, the sub-module 100 further includes an electrode plate group 130, the electrode plate group 130 includes a positive electrode plate 131 and a negative electrode plate 132, the positive electrode plate 131 is disposed on the fixing member 110 of the sub-module 100, and the positive electrode plate 131 is respectively connected with the positive electrodes of the two soft package batteries 120 of the sub-module 100, the negative electrode plate 132 is disposed on the fixing member 110 of the sub-module 100, and the negative electrode plate 132 is respectively connected with the negative electrodes of the two soft package batteries 120 of the sub-module 100, in this embodiment, the positive electrode plate 131 is used for being connected with the positive electrodes of the electric equipment of the electric automobile, and the negative electrode plate 132 is used for being connected with the negative electrodes of the electric equipment of the electric automobile.
Referring to fig. 4, in the embodiment, a plurality of the sub-modules 100 are sequentially disposed, and two adjacent sub-modules 100 are attached to form a battery module body 400 including a first end 410 and a second end 420. For easy installation, in this embodiment, a positioning protrusion 111 is disposed on one side of the fixing member 110, and correspondingly, a positioning hole 112 corresponding to the positioning protrusion 111 is disposed on the other side of the fixing member 110, so that during installation of a plurality of sub-modules 100, rapid positioning installation can be achieved through cooperation of the positioning protrusion 111 and the positioning hole 112.
In order to enhance the stability of the structure of the battery module 10, optionally, the fixing holes 500 are formed at the corners of the fixing members 110, and when a plurality of the sub-modules 100 are sequentially disposed, the fixing holes 500 formed at the corners of each of the fixing members 110 are coaxial, and thereafter, the fixing holes 500 formed at the corners of each of the fixing members 110 are sequentially penetrated through a connecting member (not shown in the drawing), further fixing of the plurality of sub-modules 100 can be performed to enhance the stability of the structure of the battery module 10.
Referring to fig. 5, as well, in order to further enhance the stability of the structure of the battery module 10, optionally, in this embodiment, the battery module 10 further includes two end fixing plates 600, where the two end fixing plates 600 are respectively disposed at the first end 410 and the second end 420 of the battery module body 400 to fix the battery module body 400, in this embodiment, fixing holes 500 are also disposed at corners of the end fixing plates 600, and after the two end fixing plates 600 are respectively disposed at the first end 410 and the second end 420 of the battery module body 400, the fixing holes 500 disposed at corners of the end fixing plates 600 are coaxial with the fixing holes 500 disposed at corners of the fixing members 110, and it can be understood that two ends of the connecting member sequentially passing through the fixing holes 500 disposed at corners of each fixing member 110 are respectively disposed in the fixing holes 500 disposed at corners of the two end fixing plates 600.
Referring to fig. 6 and 7, in the present embodiment, the battery module 10 further includes a liquid cooling pipe 700, and the liquid cooling pipe 700 is disposed around the plurality of sub-modules 100 to isolate two adjacent sub-modules 100. Optionally, in this embodiment, the liquid cooling pipe 700 includes a liquid inlet pipe 710, a liquid outlet pipe 720, and a plurality of liquid cooling flat pipes 730 disposed between the liquid inlet pipe 710 and the liquid outlet pipe 720 to communicate the liquid inlet pipe 710 and the liquid outlet pipe 720, where the plurality of liquid cooling flat pipes 730 are circuitously disposed in the plurality of sub-modules 100 to isolate two adjacent sub-modules 100. In this embodiment, the liquid inlet pipe 710 or the liquid outlet pipe 720 is further provided with an electromagnetic valve 740 to control the flow of the cooling liquid in the liquid cooling flat pipe 730.
Referring to fig. 8, optionally, in this embodiment, the battery module 10 further includes a controller 800, where the controller 800 is connected to the temperature detecting device 200 to obtain a temperature value detected by the temperature detecting device 200, and adjust the flow rate of the cooling liquid in the liquid cooling tube 700 according to the received temperature value. For example, when a temperature value greater than a first preset temperature threshold exists in the received temperature values, the solenoid valve 740 is controlled to adjust the opening to a first preset opening, and when a temperature value greater than a second preset temperature threshold does not exist in the received temperature values, the solenoid valve 740 is controlled to adjust the opening to a second preset opening, wherein the first preset temperature threshold is greater than the second preset temperature threshold, and the first preset opening is greater than the second preset opening.
In addition, in the present embodiment, the controller 800 may be an integrated circuit chip with signal processing capability. The controller 800 may also be a general purpose processor and the controller 800 may also be an Application Specific Integrated Circuit (ASIC), a discrete gate or transistor logic, a discrete hardware component. The controller 800 may implement or perform the disclosed block diagrams in embodiments of the invention. Further, the general purpose processor may be a Microprocessor (MCU) or any conventional controller 800 or the like.
Optionally, in this embodiment, the battery module 10 further includes an alarm 900, where the alarm 900 is connected to the controller 800, and the alarm 900 is configured to receive an alarm signal generated by the controller 800 when it is determined that a temperature value greater than a preset temperature threshold exists in the received temperature values, so as to send out an alarm, where the preset temperature threshold is greater than the first preset temperature threshold.
In order to determine that the temperature is out of control, and is punctured, the controller 800 is further embedded with a memory, so that the controller 800 has data storage capability, further, the sub-module 100 is preset with a code number, and similarly, the temperature detecting device 200 is preset with a code number, the controller 800 stores a correspondence between the code number of the sub-module 100 and the code number of the temperature detecting device 200, and the controller 800 can determine, according to the received identification information carried in the temperature value, the code number of the temperature detecting device 200 sending the temperature value, and find the code number of the sub-module 100 corresponding to the code number of the temperature detecting device 200, so as to achieve the purpose of accurately positioning the soft-pack battery 120 in which the temperature is out of control, is punctured, and the alarm signal generated by the controller 800 includes the code number of the sub-module 100.
Referring to fig. 9, in order to enhance the timeliness of detecting abnormal conditions such as thermal runaway and puncture of the soft pack battery 120, in this embodiment, the sub-module 100 includes a plurality of temperature detecting devices 200 disposed between the two soft pack batteries 120, and the plurality of temperature detecting devices 200 are disposed between the two soft pack batteries 120. For example, the number of the temperature detecting devices 200 arranged between the two soft pack batteries 120 in each sub-module 100 is six, and the six temperature detecting devices 200 are uniformly arranged between the two soft pack batteries 120 in a two-row and three-column arrangement mode, so that when the soft pack batteries 120 generate a high temperature phenomenon from a local start, the controller 800 receives a temperature value detected by the temperature detecting device 200 close to the position, and when the temperature value is greater than a preset temperature threshold, it can be determined that the soft pack batteries 120 generate the high temperature phenomenon, thereby enhancing the timeliness of detecting abnormal conditions such as thermal runaway and puncture of the soft pack batteries 120.
Referring to fig. 10 and 11, in order to further detect whether the soft pack battery 120 is transmitting an abnormal condition such as failure or overcharge, in this embodiment, optionally, the sub-module 100 further includes a pressure detecting device 1000, where the pressure detecting device 1000 is disposed between the two soft pack batteries 120, and the pressure detecting device 1000 is configured to detect a pressure value between the two soft pack batteries 120 and send the pressure value to the controller 800, so that the controller 800 generates an alarm signal and sends the alarm signal to the alarm 900 when determining that a pressure value greater than a preset pressure threshold exists in the received pressure values, so that the alarm 900 sends an alarm.
In order to determine the soft package battery 120 having abnormal conditions such as failure and overcharge, in this embodiment, the pressure detecting device 1000 is preset with a code number, the controller 800 stores a correspondence between the code number of the sub-module 100 and the code number of the pressure detecting device 1000, the controller 800 may determine, according to the received identification information carried in the pressure value, the code number of the pressure detecting device 1000 sending the pressure value, and find the code number of the sub-module 100 corresponding to the code number of the pressure detecting device 1000, so as to achieve the purpose of accurately positioning the soft package battery 120 having abnormal conditions such as failure and overcharge, where the alarm signal generated by the controller 800 includes the code number of the sub-module 100.
Referring to fig. 12, in order to enhance timeliness of detecting abnormal conditions such as failure and overcharge of the soft-pack battery 120, in this embodiment, the sub-module 100 includes a plurality of pressure detecting devices 1000 disposed between the two soft-pack batteries 120, and the plurality of pressure detecting devices 1000 are disposed between the two soft-pack batteries 120. For example, the sub-modules 100 include six pressure detecting devices 1000 disposed between the two soft-pack batteries 120, and the six pressure detecting devices 1000 are disposed between the two soft-pack batteries 120 at equal intervals in a two-row and three-column arrangement manner, so that when the soft-pack batteries 120 expand from a local start, the controller 800 receives a pressure value detected by the pressure detecting device 1000 close to the local start, and when the pressure value is greater than a preset pressure threshold, it can determine that the soft-pack batteries 120 expand, thereby enhancing timeliness of detecting abnormal situations such as failure, overcharge, and the like of the soft-pack batteries 120.
In this embodiment, the pressure detecting device 1000 is a thin film pressure sensor. In addition, the pressure detecting device 1000 between the two soft package batteries 120 of each sub-module 100 may be disposed between the two soft package batteries 120 in an adhesive manner, or may be directly clamped between the two soft package batteries 120, and then fixed around. With respect to the specific arrangement of the pressure detecting device 1000, the present embodiment is not particularly limited.
The embodiment of the invention also provides a battery management system, which comprises a processor and the battery module 10, wherein the processor is communicated with a pressure sensor device of the battery module 10.
In summary, in the battery module 10 and the battery management system according to the embodiments of the present invention, the temperature detection device 200 is disposed between the two soft pack batteries 120 included in each sub-module 100, the temperature detection device 200 is connected to the fixing member 110 through the elastic connection member 300, and the temperature detection device 200 can timely detect whether the soft pack batteries 120 are out of control, are punctured, and the like, and are accompanied by abnormal conditions caused by high temperature, and in addition, since the temperature detection device 200 is connected to the fixing member 110 through the elastic connection member 300, the temperature detection device 200 can still be closely attached to the soft pack batteries 120 when the soft pack batteries 120 expand, thereby ensuring the accuracy of the detection result.
In the description of the present invention, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. Either mechanically or electrically. Can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the description of the present invention, it should also be noted that the azimuth or positional relationship indicated by the terms "inner" and "outer" and the like are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship that the inventive product is conventionally put in use, merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The battery module is characterized by comprising a plurality of sub-modules, wherein each sub-module comprises a fixing piece and two soft package batteries arranged on the fixing piece, a temperature detection device is arranged between the two soft package batteries and connected to the fixing piece through an elastic connecting piece, and the temperature detection device is used for detecting the temperature values of the two soft package batteries;
the battery module further comprises a liquid cooling pipe, wherein the liquid cooling pipe is arranged on the plurality of sub-modules in a roundabout way so as to isolate two adjacent sub-modules;
the temperature detection devices arranged between the two soft package batteries are multiple, and the temperature detection devices are distributed between the two soft package batteries.
2. The battery module according to claim 1, further comprising a controller connected to the temperature detecting device to obtain a temperature value detected by the temperature detecting device, and to adjust the flow rate of the cooling liquid in the liquid cooling tube according to the received temperature value.
3. The battery module according to claim 2, further comprising an alarm connected to the controller, the alarm being configured to receive an alarm signal generated by the controller when it is determined that a temperature value greater than a preset temperature threshold exists among the received temperature values, so as to issue an alarm.
4. The battery module according to claim 3, wherein the sub-module further comprises a pressure detection device, the pressure detection device is disposed between the two soft pack batteries, and the pressure detection device is configured to detect a pressure value between the two soft pack batteries and send the pressure value to the controller, so that the controller generates an alarm signal and sends the alarm to the alarm when judging that a pressure value greater than a preset pressure threshold exists in the received pressure values.
5. The battery module according to any one of claims 1 to 4, wherein the fixing member is a fixing frame having a rectangular frame structure, and the two pouch cells mounted to the fixing frame are located inside the fixing frame.
6. The battery module of claim 5, wherein the sub-module further comprises an electrode sheet group, the electrode sheet group comprises a positive electrode sheet and a negative electrode sheet, the positive electrode sheet is arranged on the fixing piece of the sub-module, the positive electrode sheet is respectively connected with the positive electrodes of the two soft package batteries of the sub-module, the negative electrode sheet is arranged on the fixing piece of the sub-module, and the negative electrode sheet is respectively connected with the negative electrodes of the two soft package batteries of the sub-module.
7. The battery module according to any one of claims 1 to 4, wherein a plurality of the sub-modules are sequentially arranged, and adjacent two of the sub-modules are attached to form a battery module body including a first end portion and a second end portion, the battery module further including two end fixing plates respectively provided at the first end portion and the second end portion of the battery module body to fix the battery module body.
8. A battery management system comprising a processor and the battery module of any one of claims 1-7, the processor in communication with a pressure sensor device of the battery module.
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| CN201810119315.6A CN108461847B (en) | 2018-02-06 | 2018-02-06 | Battery module and battery management system |
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| CN201810119315.6A CN108461847B (en) | 2018-02-06 | 2018-02-06 | Battery module and battery management system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108365295A (en) * | 2018-03-07 | 2018-08-03 | 华霆（合肥）动力技术有限公司 | Heat management device and battery modules |
| CN110261781A (en) * | 2019-06-12 | 2019-09-20 | 天津市捷威动力工业有限公司 | A kind of method for early warning of battery thermal runaway |
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| DE102014204245A1 (en) * | 2014-03-07 | 2015-09-10 | Robert Bosch Gmbh | Energy storage unit with a plurality of galvanic cells, battery cell for such an energy storage unit and method for manufacturing the battery cell |
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