CN214647709U - Range extending system of electric automobile - Google Patents
Range extending system of electric automobile Download PDFInfo
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- CN214647709U CN214647709U CN202120922231.3U CN202120922231U CN214647709U CN 214647709 U CN214647709 U CN 214647709U CN 202120922231 U CN202120922231 U CN 202120922231U CN 214647709 U CN214647709 U CN 214647709U
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The utility model provides an electric automobile increases journey system relates to electric automobile technical field that charges. The method comprises the following steps: the system comprises a battery replacing bin, a switch assembly, a direct current output assembly, a controller and an electric automobile battery pack, wherein the power supply output end of the electric automobile battery pack is electrically connected with a direct current bus of the electric automobile, and the sampling end of the electric automobile battery pack is electrically connected with the controller; the battery replacement bin is arranged in the battery replacement bin, the battery replacement bin is electrically connected with one end of the switch assembly, and the output end of the controller is electrically connected with the control end of the switch assembly; the other end of the switch component is also electrically connected with the input end of the direct current output component, and the output end of the direct current output component is also electrically connected with the direct current bus. The controller controls the switch assembly to be in a closed state according to the electric quantity information of the electric automobile battery pack, the direct current output assembly converts the electric energy in the power exchange battery and outputs the electric energy to the direct current bus, the electric energy is directly provided for the electric automobile, the loss of the electric automobile battery pack is reduced, and the conversion efficiency is improved.
Description
Technical Field
The utility model relates to an electric automobile technical field that charges particularly, relates to an electric automobile increases journey system.
Background
Due to the pollution of exhaust emission of fuel automobiles to the environment and the lack of non-renewable energy sources, more and more people select electric automobiles for going out. With the gradual increase of the holding capacity of electric vehicles, charging electric vehicles is also a hot point of research.
In the correlation technique, when the power battery electric quantity of electric automobile is not enough, can charge for electric automobile's power battery through electric automobile treasured that charges, then electric automobile's power battery discharges and provides power for electric automobile.
However, in the related art, the electric vehicle charger needs to charge the power battery, and the power battery needs to be discharged to provide power for the electric vehicle, so that the loss of the power battery is increased, and the problem of low conversion efficiency also exists.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an electric automobile increases journey system to not enough among the above-mentioned prior art to in solving the correlation technique, electric automobile charges precious needs to charge power battery, and power battery need discharge just can provide power for electric automobile, has increased power battery's loss, still has the problem that conversion efficiency is low.
In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions:
in a first aspect, an embodiment of the present invention provides an electric vehicle range extending system, including: the system comprises a battery replacing bin, a switch assembly, a direct current output assembly, a controller and an electric automobile battery pack, wherein a power supply output end of the electric automobile battery pack is electrically connected with a direct current bus of an electric automobile, and a sampling end of the electric automobile battery pack is electrically connected with the controller so as to output electric quantity information of the electric automobile battery pack to the controller;
the battery replacement bin is provided with a battery replacement bin, a switch assembly and a controller, wherein the battery replacement bin is arranged in the battery replacement bin, the battery replacement bin is electrically connected with one end of the switch assembly, and the output end of the controller is electrically connected with the control end of the switch assembly, so that the controller controls the on-off state of the switch assembly according to the electric quantity information;
the other end of the switch assembly is electrically connected with the input end of the direct current output assembly, and the output end of the direct current output assembly is electrically connected with the direct current bus, so that the direct current output assembly converts the electric energy in the battery replacement battery and outputs the electric energy to the direct current bus when the switch assembly is in a closed state.
Optionally, the switch assembly includes: at least one switching device, wherein at least one battery replacing battery arranged in the battery replacing battery bin is electrically connected with one end of the at least one switching device respectively; the other end of the at least one switching device is electrically connected with the input end of the direct current output assembly; and the control end of the at least one switching device is electrically connected with the output end of the controller.
Optionally, the controller is electrically connected to an input end of the dc output assembly to obtain an input voltage output from a battery replacement in power supply to the dc output assembly, and controls a switching device electrically connected to a target battery replacement battery to be turned on and controls a switching device electrically connected to the battery replacement battery in power supply to be turned off when the input voltage is less than or equal to a preset voltage threshold;
the power supply switching device is electrically connected with the target battery replacement battery, and the target battery replacement battery is selected from the battery replacement batteries electrically connected with the switching device in the off state.
Optionally, the dc output module includes: the input end of the direct current converter is electrically connected with the other end of the switch assembly, and the output end of the direct current converter is also electrically connected with the direct current bus;
the control unit is electrically connected with the output end of the direct current converter and the direct current bus so as to obtain the output voltage and the bus voltage of the direct current converter;
the output end of the control unit is also electrically connected with the control end of the direct current converter so as to control the direct current converter to convert the electric energy in the battery replacement battery and output the electric energy to the direct current bus under the condition that the output voltage is greater than the bus voltage; or under the condition that the output voltage is less than or equal to the bus voltage, the conversion function of the direct current converter is closed, so that the electric energy in the electric automobile battery pack is output to the direct current bus.
Optionally, the battery replacement bin includes: each battery accommodating cavity is used for accommodating at least one battery replacement battery.
Optionally, the battery replacement battery is a low-voltage battery, and the battery pack of the electric vehicle is a high-voltage battery.
The utility model has the advantages that: the embodiment of the utility model provides an electric automobile increases journey system, include: the system comprises a battery replacing bin, a switch assembly, a direct current output assembly, a controller and an electric automobile battery pack, wherein the power supply output end of the electric automobile battery pack is electrically connected with a direct current bus of the electric automobile, and the sampling end of the electric automobile battery pack is electrically connected with the controller so as to output electric quantity information of the electric automobile battery pack to the controller; the battery replacement bin is provided with a battery replacement bin, the battery replacement bin is arranged in the battery replacement bin, the output end of the controller is electrically connected with the control end of the switch assembly, and the controller controls the on-off state of the switch assembly according to the electric quantity information; the other end of the switch assembly is also electrically connected with the input end of the direct current output assembly, and the output end of the direct current output assembly is also electrically connected with the direct current bus, so that the direct current output assembly converts the electric energy in the power conversion battery and outputs the electric energy to the direct current bus when the switch assembly is in a closed state. The controller is in the closure state according to the electric quantity information control switch subassembly of electric automobile group battery, and direct current output subassembly exports the direct current generating line after the electric energy in to the battery that trades, directly provides the electric energy for electric automobile, need not to carry out charge-discharge to the electric automobile group battery, has reduced the loss of electric automobile group battery, has improved conversion efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of an electric vehicle range extending system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an electric vehicle range extending system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an electric vehicle range extending system according to an embodiment of the present invention;
fig. 4 is a schematic flow chart of a method for extending the range of the electric vehicle according to an embodiment of the present invention;
fig. 5 is a schematic flow chart of a method for extending a range of an electric vehicle according to an embodiment of the present invention;
fig. 6 is a schematic flow chart of a method for extending the range of the electric vehicle according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an electric vehicle range extender provided in an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a controller according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that if the terms "upper", "lower", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually arranged when the product of the application is used, the description is only for convenience of describing the application and simplifying the description, but the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and operation, and thus, cannot be understood as the limitation of the application.
Furthermore, the terms "first," "second," and the like in the description and in the claims, and in the drawings described above, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that the features of the embodiments of the present application may be combined with each other without conflict.
Fig. 1 is the utility model provides a structural schematic diagram of an electric automobile increases journey system, as shown in fig. 1, this electric automobile increases journey system can include: the device comprises a battery replacing bin, a switch assembly 101, a direct current output assembly 102, a controller 103 and an electric vehicle battery pack 104.
The power supply output end of the electric vehicle battery pack 104 is electrically connected with the direct current bus 106 of the electric vehicle, and the sampling end of the electric vehicle battery pack 104 is electrically connected with the controller 103 so as to output the electric quantity information of the electric vehicle battery pack 104 to the controller 103.
In addition, a battery replacing battery 105 placed in the battery replacing bin is electrically connected with one end of the switch assembly 101, and the output end of the controller 103 is electrically connected with the control end of the switch assembly 101, so that the controller 103 controls the on-off state of the switch assembly 101 according to the electric quantity information.
After the electric vehicle is started to run, the controller 103 may obtain the electric quantity information of the electric vehicle battery pack 104 in real time, the battery replacement battery 105 may also be referred to as a battery pack assembly, and the controller 103 may be referred to as a control assembly.
In some embodiments, the sampling terminal of the electric vehicle battery pack 104 may output the power information of the electric vehicle battery pack 104 to the controller 103; correspondingly, the controller 103 may obtain the electric quantity information, and determine whether the electric quantity information is less than or equal to a preset electric quantity threshold, and if it is determined that the electric quantity information is less than or equal to the preset electric quantity threshold, which indicates that the electric quantity of the electric vehicle battery pack 104 is insufficient, the controller 103 may control the switch assembly 101 to be in a closed state, so as to provide electric energy by the battery replacing battery 105 placed in the battery replacing compartment.
In addition, the controller 103 may also determine whether the electric quantity information is less than or equal to a preset percentage of the preset electric quantity threshold, which is not specifically limited in the embodiment of the present application. For example, the preset charge threshold may be 50kwh (kilowatt-hour), the preset percentage may be 20%, and the preset percentage of the preset charge threshold may be 10 kwh.
Of course, if the controller 103 determines that the electric quantity information is greater than the preset electric quantity threshold, which indicates that the electric quantity of the electric vehicle battery pack 104 is sufficient, the switch assembly 101 may be controlled to be in the off state, so as to realize that the electric vehicle battery pack 104 provides the electric energy.
In addition, the other end of the switch assembly 101 is further electrically connected to an input end of the dc output assembly 102, and an output end of the dc output assembly 102 is further electrically connected to the dc bus 106, so that the dc output assembly 102 converts the electric energy in the converter battery 105 and outputs the electric energy to the dc bus 106 when the switch assembly 101 is in a closed state.
Alternatively, the DC output assembly 102 may be a unidirectional DC/DC (direct current/direct current) converter,
in some embodiments, when the switch assembly 101 is in a closed state, the battery swapping unit 105 may output a low voltage input to the dc output assembly 102, and the dc output assembly 102 may receive the low voltage and boost the low voltage to obtain a required high voltage, and output the high voltage to the dc bus 106. In addition, in the off state of the switch assembly 101, the high voltage in the electric vehicle battery pack 104 can be output to the dc bus 106.
It should be noted that the dc bus 106 may be electrically connected to a motor of the electric vehicle, so as to output the high-voltage current input to the dc bus 106 to the motor, and the motor may operate according to the high-voltage current, thereby providing power for the electric vehicle.
In practical application, the battery replacement 105 can be used as an optional part, when the electric quantity of the electric vehicle battery pack 104 in the electric vehicle is about to be insufficient, the electric vehicle can be driven to rent a battery replacement 105 sharing station nearby to obtain the battery replacement 105, and the battery replacement 105 is placed in a battery replacement bin; or the battery replacing battery 105 can be placed in the electric automobile, and the battery replacing battery 105 can be placed in the battery replacing battery bin when needed; or when the electric vehicle battery pack 104 in the electric vehicle is not powered, the rescue vehicle can wait for transporting the battery replacing battery 105, and the battery replacing battery 105 is placed in the battery replacing battery cabin to extend the range of the electric vehicle.
To sum up, the embodiment of the utility model provides an electric automobile increases journey system, include: the system comprises a battery replacing bin, a switch assembly 101, a direct current output assembly 102, a controller 103 and an electric automobile battery pack 104, wherein a power supply output end of the electric automobile battery pack 104 is electrically connected with a direct current bus 106 of the electric automobile, and a sampling end of the electric automobile battery pack 104 is electrically connected with the controller 103 so as to output electric quantity information of the electric automobile battery pack 104 to the controller 103; the battery replacing battery 105 arranged in the battery replacing bin is electrically connected with one end of the switch assembly 101, and the output end of the controller 103 is electrically connected with the control end of the switch assembly 101, so that the controller 103 controls the on-off state of the switch assembly 101 according to the electric quantity information; the other end of the switch assembly 101 is further electrically connected to an input end of the dc output assembly 102, and an output end of the dc output assembly 102 is further electrically connected to the dc bus 106, so that the dc output assembly 102 converts the electric energy in the rechargeable battery 105 and outputs the electric energy to the dc bus 106 when the switch assembly 101 is in a closed state. The controller 103 controls the switch assembly 101 to be in a closed state according to the electric quantity information of the electric vehicle battery pack 104, the direct current output assembly 102 converts the electric energy in the power conversion battery 105 and outputs the electric energy to the direct current bus 106, the electric energy is directly provided for the electric vehicle, the electric vehicle battery pack 104 does not need to be charged and discharged, the loss of the electric vehicle battery pack 104 is reduced, and the conversion efficiency is improved.
Optionally, the battery replacing pack 105 is a low-voltage battery, and the battery pack 104 of the electric vehicle is a high-voltage battery.
The battery replacement unit 105 may be a battery of a two-wheeled electric vehicle or a battery of a three-wheeled electric vehicle, may also be a battery of a echelon, and may also be a low-voltage battery of another type, which is not specifically limited in the embodiment of the present application.
In the embodiment of the application, the low-voltage battery is used as the battery replacing battery 105, so that the battery replacing device has the advantages of small size, high safety and low rescue cost; moreover, the battery replacing battery 105 directly discharges through the direct current output assembly 102 to provide electric energy, has the characteristics of mature technology and high conversion efficiency, can also charge during driving, does not need charging waiting time, and increases user experience; the problem of dull large-scale low-voltage battery is effectively solved, and the utilization rate of the low-voltage battery is improved.
Optionally, fig. 2 is a schematic structural diagram of an electric vehicle range extending system provided by an embodiment of the present invention, as shown in fig. 2, the switch assembly 101 in the electric vehicle range extending system may include: at least one switch device 1011, wherein at least one battery replacing battery 105 arranged in the battery replacing battery bin is electrically connected with one end of the at least one switch device 1011 respectively; the other end of the at least one switching device 1011 is electrically connected with the input end of the direct current output assembly 102; the control terminal of the at least one switching device 1011 is electrically connected to the output terminal of the controller 103.
The other end of each switching device 1011 is electrically connected to the input end of the dc output assembly 102, and the control end of each switching device 1011 is electrically connected to the output end of the controller 103.
In some embodiments, the number of the switching devices 1011 and the number of the battery cells 105 may be the same, the switching devices 1011 and the battery cells 105 may correspond to each other, and one battery cell 105 may be electrically connected to one end of one switching device 1011. For example, the number of the battery cells 105 may be 4, and the number of the switching devices 1011 may be 4.
In other embodiments, the number of the switching devices 1011 may be less than the number of the battery cells 105, at least one battery cell 105 may be divided into a plurality of sets of battery cells 105, and each set of battery cells 105 may include: the first preset number of battery cells 105 may be electrically connected to one end of the same switch device 1011 in each set of battery cells 105. For example, the number of the battery cells 105 may be 6, each 2 battery cells 105 is a set of battery cells 105, a set of battery cells 105 may correspond to one switch device 1011, and the number of the switch devices 1011 may be 3.
Optionally, fig. 3 is a schematic structural diagram of an electric vehicle range extending system provided in an embodiment of the present invention, as shown in fig. 3, the controller 103 is electrically connected to an input end of the dc output assembly 102 to obtain an input voltage output from the battery 105 to the dc output assembly 102 during power supply, and when the input voltage is less than or equal to a preset voltage threshold, the switch device 1011 electrically connected to the target battery 105 is controlled to be closed, and the switch device 1011 electrically connected to the battery 105 during power supply is controlled to be opened.
The switching device 1011 electrically connected to the switching device 105 in the on state during power supply is the switching battery 105, and the target switching battery 105 is the switching battery 105 selected from the switching batteries 105 electrically connected to the switching device 1011 in the off state.
It should be noted that the at least one rechargeable battery 105 may include a rechargeable battery 105 during power supply and a rechargeable battery 105 without power supply. Optionally, the battery replacement 105 during power supply may be one battery replacement 105 of a plurality of sets of battery replacement 105, or may also be a second preset number of battery replacement 105 of at least one power supply battery; the non-power supply replacement battery 105 may be another set of replacement batteries 105 in the plurality of sets of replacement batteries 105, or may be another replacement battery 105 in at least one power supply battery.
In a possible embodiment, the controller 103 may obtain, from the dc output component 102, an input voltage output from the battery 105 to the dc output component 102 during power supply; judging whether the input voltage is less than or equal to a preset voltage threshold value; if the input voltage is less than or equal to the preset voltage threshold, the switching device 1011 electrically connected to the target battery replacement cell 105 is controlled to be closed, and the switching device 1011 electrically connected to the battery replacement cell 105 in the power supply is controlled to be opened, so that the direct current output assembly 102 can convert the electric energy in the target battery replacement cell 105 and output the electric energy to the direct current bus 106.
In the embodiment of the present application, the controller 103 may simultaneously control the switch device 1011 electrically connected to the target battery replacement cell 105 to be turned on, and control the switch device 1011 electrically connected to the battery replacement cell 105 to be turned off during power supply; the controller 103 may also control the switch device 1011 electrically connected to the target battery replacement cell 105 to be turned on first, and then control the switch device 1011 electrically connected to the battery replacement cell 105 to be turned off during power supply, which is not specifically limited in the embodiment of the present application.
Optionally, the dc output module 102 includes: the input end of the direct current converter is electrically connected with the other end of the switch assembly 101, and the output end of the direct current converter is also electrically connected with a direct current bus 106;
the control unit is electrically connected with the output end of the direct current converter and the direct current bus 106 so as to obtain the output voltage and the bus voltage of the direct current converter;
the output end of the control unit is also electrically connected with the control end of the direct current converter so as to control the direct current converter to convert the electric energy in the power conversion battery 105 and output the electric energy to the direct current bus 106 under the condition that the output voltage is greater than the bus voltage; alternatively, when the output voltage is less than or equal to the bus voltage, the conversion function of the dc converter is turned off, so that the electric energy in the electric vehicle battery pack 104 is output to the dc bus 106.
The voltage output by the dc converter may be smaller than a first preset output voltage threshold and larger than a second preset output voltage threshold.
In a possible embodiment, the control unit obtains the output voltage of the dc converter through the output terminal of the dc converter, and obtains the bus voltage through the dc bus 106; then judging whether the output voltage is less than the bus voltage; if the output voltage is greater than the bus voltage, the control unit sends a control signal to the direct current converter; correspondingly, the dc converter can receive the control signal and realize a conversion function according to the control signal, that is, the dc converter can output power when in a working state, and the dc converter can convert the electric energy in the power conversion battery 105 and output the electric energy to the dc bus 106 to provide power for the electric vehicle.
In addition, if the output voltage is less than or equal to the bus voltage, the control signal is stopped from being sent to the direct current converter; correspondingly, if the dc converter does not receive the control signal, the conversion function is turned off, that is, the dc converter is in a standby state and has no power output, and the electric energy in the battery pack 104 of the electric vehicle is output to the dc bus 106 to power the electric vehicle.
Optionally, trade the battery compartment and include: at least one battery receiving cavity, each battery receiving cavity is used for receiving at least one battery replacing battery 105.
In this embodiment, the battery replacing cells 105 in one set of battery replacing cells 105 may also be disposed in the same cell accommodating cavity, or may be disposed in different cell accommodating cavities, which is not specifically limited in this embodiment.
Fig. 4 is a schematic flow chart of a method for increasing the range of an electric vehicle according to an embodiment of the present invention, as shown in fig. 4, applied to the above-mentioned system for increasing the range of an electric vehicle, the method may include:
s401, the controller acquires the electric quantity information of the electric automobile battery pack.
S402, comparing the electric quantity information with a preset electric quantity threshold value by the controller.
And S403, if the electric quantity information is smaller than or equal to the preset electric quantity threshold value, the controller controls the on-off state of the switch assembly, so that the direct current output assembly converts the electric energy in the electricity conversion battery and outputs the electric energy to the direct current bus when the switch assembly is in the closed state.
Optionally, fig. 5 is a schematic flow chart of a method for extending a range of an electric vehicle according to an embodiment of the present invention, as shown in fig. 5, the method may further include:
s501, the controller acquires input voltage output to the direct current output assembly by the battery replacement battery in power supply;
s502, comparing the input voltage with a preset voltage threshold by a controller;
and S503, if the input voltage is less than or equal to the preset voltage threshold, the controller controls the switch device electrically connected with the target battery replacement battery to be closed and controls the switch device electrically connected with the battery replacement battery to be disconnected in power supply.
Optionally, if the dc output component includes: a control unit and a DC converter;
fig. 6 is a schematic flow chart of a method for extending the range of the electric vehicle according to an embodiment of the present invention, as shown in fig. 6, the method may further include:
s601, comparing the output voltage of the direct current converter with the bus voltage by a control unit;
and S602, if the output voltage is greater than the bus voltage, the control unit controls the direct current converter to convert the electric energy in the power conversion battery and then output the electric energy to the direct current bus.
Optionally, the method may further include:
if the output voltage is less than or equal to the bus voltage, the control unit closes the conversion function of the direct current converter, so that the electric energy in the electric automobile battery pack is output to the direct current bus.
It should be noted that, the above embodiments related to the range extending method of the electric vehicle may refer to the above description related to the range extending system of the electric vehicle, and the embodiment of the present application does not specifically limit this.
For specific implementation processes and technical effects, reference is made to the relevant contents of the electric vehicle range extending method, and details thereof are not described below.
Fig. 7 is a schematic structural diagram of an electric vehicle range extending device provided by an embodiment of the present invention, as shown in fig. 7, and is applied to the electric vehicle range extending system, and the electric vehicle range extending device may correspond to the electric vehicle range extending method executed by the controller, and the device may include:
the first obtaining module 701 is configured to obtain electric quantity information of the electric vehicle battery pack.
A first comparing module 702, configured to compare the power information with a preset power threshold.
The first control module 703 is configured to, if the electric quantity information is less than or equal to the preset electric quantity threshold, control the on-off state of the switch assembly by the controller, so that the dc output assembly converts the electric energy in the power conversion battery and outputs the converted electric energy to the dc bus when the switch assembly is in the on-off state.
Optionally, the apparatus may further include:
the second acquisition module is used for acquiring the input voltage output to the direct current output assembly by the battery replacement battery in power supply;
the second comparison module is used for comparing the input voltage with a preset voltage threshold;
and the second control module is used for controlling the switch device electrically connected with the target battery replacement battery to be closed and controlling the switch device electrically connected with the battery replacement battery to be disconnected in power supply if the input voltage is less than or equal to the preset voltage threshold.
The above-mentioned apparatus is used for executing the method provided by the foregoing embodiment, and the implementation principle and technical effect are similar, which are not described herein again.
These above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when one of the above modules is implemented in the form of a Processing element scheduler code, the Processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).
Fig. 8 is a schematic structural diagram of a controller according to an embodiment of the present invention, where the controller includes: a processor 801 and a memory 802.
The memory 802 is used for storing programs, and the processor 801 calls the programs stored in the memory 802 to execute the above-mentioned method embodiments. The specific implementation and technical effects are similar, and are not described herein again.
Optionally, the present invention also provides a program product, such as a computer readable storage medium, comprising a program which, when being executed by a processor, is adapted to carry out the above-mentioned method embodiments.
In the several embodiments provided in the present disclosure, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) or a processor (english: processor) to execute some steps of the method according to various embodiments of the present invention. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. An electric vehicle range extending system, comprising: the system comprises a battery replacing bin, a switch assembly, a direct current output assembly, a controller and an electric automobile battery pack, wherein a power supply output end of the electric automobile battery pack is electrically connected with a direct current bus of an electric automobile, and a sampling end of the electric automobile battery pack is electrically connected with the controller so as to output electric quantity information of the electric automobile battery pack to the controller;
the battery replacement bin is provided with a battery replacement bin, a switch assembly and a controller, wherein the battery replacement bin is arranged in the battery replacement bin, the battery replacement bin is electrically connected with one end of the switch assembly, and the output end of the controller is electrically connected with the control end of the switch assembly, so that the controller controls the on-off state of the switch assembly according to the electric quantity information;
the other end of the switch assembly is electrically connected with the input end of the direct current output assembly, and the output end of the direct current output assembly is electrically connected with the direct current bus, so that the direct current output assembly converts the electric energy in the battery replacement battery and outputs the electric energy to the direct current bus when the switch assembly is in a closed state.
2. The system of claim 1, wherein the switch assembly comprises: at least one switching device, wherein at least one battery replacing battery arranged in the battery replacing battery bin is electrically connected with one end of the at least one switching device respectively; the other end of the at least one switching device is electrically connected with the input end of the direct current output assembly; and the control end of the at least one switching device is electrically connected with the output end of the controller.
3. The system of claim 2, wherein the controller is electrically connected to an input end of the dc output assembly to obtain an input voltage output from a battery cell in power supply to the dc output assembly, and controls a switching device electrically connected to a target battery cell to be closed and controls a switching device electrically connected to the battery cell in power supply to be opened when the input voltage is less than or equal to a preset voltage threshold;
the power supply switching device is electrically connected with the target battery replacement battery, and the target battery replacement battery is selected from the battery replacement batteries electrically connected with the switching device in the off state.
4. The system of claim 1, wherein the dc output assembly comprises: the input end of the direct current converter is electrically connected with the other end of the switch assembly, and the output end of the direct current converter is also electrically connected with the direct current bus;
the control unit is electrically connected with the output end of the direct current converter and the direct current bus so as to obtain the output voltage and the bus voltage of the direct current converter;
the output end of the control unit is also electrically connected with the control end of the direct current converter so as to control the direct current converter to convert the electric energy in the battery replacement battery and output the electric energy to the direct current bus under the condition that the output voltage is greater than the bus voltage; or under the condition that the output voltage is less than or equal to the bus voltage, the conversion function of the direct current converter is closed, so that the electric energy in the electric automobile battery pack is output to the direct current bus.
5. The system of claim 2, wherein the battery changing bin comprises: each battery accommodating cavity is used for accommodating at least one battery replacement battery.
6. The system of any one of claims 1-5, wherein the battery replacement cell is a low voltage battery and the electric vehicle battery pack is a high voltage battery.
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| CN202120922231.3U CN214647709U (en) | 2021-04-29 | 2021-04-29 | Range extending system of electric automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113147508A (en) * | 2021-04-29 | 2021-07-23 | 绵阳正能新能源技术有限公司 | Range extending system and method for electric automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113147508A (en) * | 2021-04-29 | 2021-07-23 | 绵阳正能新能源技术有限公司 | Range extending system and method for electric automobile |
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