CN220420703U - Battery pack heating system - Google Patents
Battery pack heating system Download PDFInfo
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- CN220420703U CN220420703U CN202322058779.XU CN202322058779U CN220420703U CN 220420703 U CN220420703 U CN 220420703U CN 202322058779 U CN202322058779 U CN 202322058779U CN 220420703 U CN220420703 U CN 220420703U
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- power supply
- module
- heating
- battery pack
- contactor
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 220
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 238000010586 diagram Methods 0.000 description 8
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 5
- 229910001416 lithium ion Inorganic materials 0.000 description 5
- 230000004308 accommodation Effects 0.000 description 3
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- KJLLKLRVCJAFRY-UHFFFAOYSA-N mebutizide Chemical compound ClC1=C(S(N)(=O)=O)C=C2S(=O)(=O)NC(C(C)C(C)CC)NC2=C1 KJLLKLRVCJAFRY-UHFFFAOYSA-N 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The embodiment of the utility model discloses a battery pack heating system. The battery pack heating system includes: the heating module is used for heating the battery pack; the power supply module is used for providing at least two or more power supply modes for providing electric energy for the heating module; the power supply mode conversion module is used for controlling the power supply mode of the heating module supplied by the power supply module; and the heating control module is electrically connected with the heating module and used for controlling the working state of the heating module according to the on-off of the heating module. The battery pack heating system provided by the embodiment of the utility model can reduce the cost.
Description
Technical Field
The embodiment of the utility model relates to a battery heating technology, in particular to a battery pack heating system.
Background
In a low-temperature state, particularly the ambient temperature is lower than ten ℃, the electric quantity consumption of the pure electric vehicle powered by the power battery is relatively large, so that the power is insufficient and even the battery cannot be charged or discharged. The lithium ion power battery such as lithium iron phosphate is particularly obvious under the condition that the energy and power of the lithium ion power battery are reduced under the low temperature, and the service life of the battery can be seriously shortened when the lithium ion power battery is used under the low temperature for a long time. In an environment with low temperature, the battery is difficult to charge and discharge, and the available discharge accommodation amount of the lithium ion power battery is suddenly reduced at minus ten ℃ and only about thirty percent of the lithium ion power battery at normal temperature can be maintained. Experimental study shows that in the environment of minus thirty ℃, if the temperature of the single battery is increased by thirty ℃ within twenty minutes, the discharge accommodation capacity can be increased by 39.95%, and the charge accommodation capacity is increased by 86.44%. In general, a plurality of unit cells are connected in series or in parallel to be used as a battery pack, and in order to ensure the service life and the electric quantity of the battery pack, the battery pack needs to be heated by a battery pack heating system.
At present, the existing battery pack heating system has the problems of complex structure and high cost.
Disclosure of Invention
The embodiment of the utility model provides a battery pack heating system for reducing cost.
The embodiment of the utility model provides a battery pack heating system, which comprises:
the heating module is used for heating the battery pack;
the power supply module is used for providing at least two or more power supply modes for providing electric energy for the heating module;
the power supply mode conversion module is used for controlling the power supply mode of the heating module supplied by the power supply module;
and the heating control module is electrically connected with the heating module and used for controlling the working state of the heating module according to the on-off of the heating module.
Optionally, the heating control module includes a low temperature control switch, a high temperature control switch, and a first contactor; the low-temperature control switch, the high-temperature control switch and the coil of the first contactor are connected in series, and are powered by a direct current power supply after being connected in series, one end of the heating module is electrically connected with one output end of the power supply module through the switch of the first contactor, and the other end of the heating module is electrically connected with the other output end of the power supply module.
Optionally, the low temperature control switch is arranged at the position of the battery pack, and the high temperature control switch is arranged at the position of the heating module; the low-temperature control switch is closed when the temperature of the low-temperature control switch is smaller than a preset first temperature, and the high-temperature control switch is closed when the temperature of the high-temperature control switch is smaller than a preset second temperature; the first temperature is preset within the range of 0-15 ℃, and the second temperature is preset within the range of 50-70 ℃.
Optionally, the power supply module includes an external power supply unit and an internal power supply unit, and one of the external power supply unit and the internal power supply unit supplies power to the heating module.
Optionally, the external power supply unit and the internal power supply unit are electrically connected with the heating module; the power supply mode conversion module comprises an external power supply control unit and an internal power supply control unit, wherein the external power supply control unit and the internal power supply control unit are electrically connected with the external power supply unit and the internal power supply unit, and the power supply mode conversion module is used for controlling the working states of the external power supply unit and the internal power supply unit.
Optionally, the external power supply control unit includes a second contactor and an external power supply line, the external power supply line is electrically connected with the heating module, and the second contactor is used for controlling on-off of a passage between the internal power supply unit and the heating module.
Optionally, the internal power supply control unit includes a third contactor and a control subunit, the third contactor includes a third contactor switch and a third contactor coil, the battery pack is connected in series with the heating module, and the third contactor coil is used for controlling switching on or switching off of the third contactor switch.
Optionally, the control subunit is powered by the battery pack;
alternatively, the control subunit is transformed by the battery pack through the DC/DC transformer to provide direct current power.
Optionally, the control subunit includes a timing controller, the timing controller controls whether the third contactor coil is electrified or not, and the third contactor coil is used for controlling the switching-on or switching-off of the third contactor switch;
or/and the combination of the two,
the control subunit comprises a button switch, the button switch is connected with the third contactor coil in series, and the button switch is used for controlling whether the third contactor coil is electrified or not.
Optionally, the heating module comprises a heater.
The battery pack heating system provided by the embodiment of the utility model comprises: the heating module is used for heating the battery pack; the power supply module is used for providing at least two or more power supply modes for providing electric energy for the heating module; the power supply mode conversion module is used for controlling the power supply mode of the heating module supplied by the power supply module; and the heating control module is electrically connected with the heating module and used for controlling the working state of the heating module according to the on-off of the heating module. According to the battery pack heating system provided by the embodiment of the utility model, the heating control module controls the working state of the heating module according to the on-off state of the heating module, for example, the heating module can be controlled to heat the battery pack, the circuit structure is simple, and the circuit cost can be reduced.
Drawings
Fig. 1 is a block diagram of a battery pack heating system according to an embodiment of the present utility model;
fig. 2 is a schematic structural diagram of a battery pack heating system according to a first embodiment of the present utility model;
fig. 3 is a schematic diagram of an external power supply structure according to a second embodiment of the present utility model;
fig. 4 is a schematic diagram of an internal power supply structure according to a second embodiment of the present utility model.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.
Example 1
Fig. 1 is a block diagram of a battery pack heating system according to a first embodiment of the present utility model, and fig. 2 is a schematic diagram of a battery pack heating system according to a first embodiment of the present utility model. Referring to fig. 1 and 2, the battery pack heating system includes: a heating module 10, a power supply module 20, a power supply mode conversion module 30, and a heating control module 40.
Wherein the heating module 10 is used for heating the battery pack; the power supply module 20 provides at least two or more power supply modes for supplying power to the heating module; one end of the power supply mode conversion module 30 is electrically connected with the power supply module 20, the other end of the power supply mode conversion module 30 is electrically connected with the heating module 10, and the power supply mode conversion module 30 is used for controlling the power supply mode of the power supply module for supplying power to the heating module; the heating control module 40 is electrically connected with the heating module 10, and is used for controlling the working state of the heating module 10 according to the on-off of the heating control module.
Illustratively, the battery pack heating system heats a battery pack of an electric vehicle, the battery pack being a lithium iron phosphate battery pack. The heating module 10 may include a heater R, which may be a heating wire, an electric heating sheet, a ceramic heating sheet (PTC heater), or the like. The battery pack includes a plurality of unit cells connected in series or/and in parallel, and the heating module 10 heats each unit cell in the battery pack. The battery pack 100 is electrically connected with the battery management system 200, and the battery pack heating system may supply power to the battery module including the battery pack 100 and the battery management system 200. The power supply mode conversion module 30 controls the power supply mode of the power supply module 20 for the heating module 10, such as internal power supply or external power supply, the external power supply may be that commercial power is converted into direct current required by the heating module 10 to supply power to the heating module 10, and the internal power supply may be that the battery pack is used for reducing voltage to supply power to the heating module 10 so as to meet the actual power supply requirement of the heating module 10. The heating control module 40 may include a switch, which is located in the loop where the heating module 10 and the power supply module 20 are located. When the battery pack needs to be heated, the switch of the heating control module 40 is turned on, the loop where the heating module 10 and the power supply module 20 are located is turned on, so that the power supply module 20 supplies power to the heating module 10, and at this time, the heater R in the heating module 10 generates heat, so as to heat the battery pack.
The battery pack heating system provided in this embodiment includes: the heating module is used for heating the battery pack; the power supply module is used for providing at least two or more power supply modes for providing electric energy for the heating module; the power supply mode conversion module is used for controlling the power supply mode of the heating module supplied by the power supply module; and the heating control module is electrically connected with the heating module and used for controlling the working state of the heating module according to the on-off of the heating module. According to the battery pack heating system provided by the embodiment, the heating control module controls the working state of the heating module according to the on-off of the heating control module, if the heating module can be controlled to heat the battery pack, the circuit structure is simple, and the circuit cost can be reduced.
Example two
The present embodiment is based on the first embodiment, referring to fig. 1 and 2, optionally, the heating control module 40 includes a low temperature control switch K01, a high temperature control switch K02, and a first contactor KM1; the low temperature control switch K01, the high temperature control switch K02 and the coil of the first contactor KM1 are connected in series, and are powered by a direct current power supply VDC after being connected in series, one end of the heating module 10 is electrically connected with one output end of the power supply module 20 through the switch of the first contactor KM1, and the other end of the heating module 10 is electrically connected with the other output end of the power supply module 20.
For example, the voltage of the dc power source VDC may be 12V, and the dc power of the dc power source VDC may be 12V obtained by voltage reduction of the battery pack, or may be dc power output from a battery of another 12V such as a low-voltage battery in an electric vehicle. The low temperature control switch K01 and the high temperature control switch K02 may be turned on when the temperatures of the low temperature control switch K01 and the high temperature control switch K02 are lower than the preset thresholds, when the low temperature control switch K01 and the high temperature control switch K02 are both turned on, the direct current power VDC is conducted with a channel formed by the low temperature control switch K01, the high temperature control switch K02 and the coil of the first contactor KM1 which are connected in series, the voltage of the direct current power VDC is transmitted to the coil of the first contactor KM1 through the low temperature control switch K01 and the high temperature control switch K02 which are closed, the coil of the first contactor KM1 is electrified, at this time, the switch of the first contactor KM1 is turned on, the heating module 10 and the switch of the first contactor KM1 are conducted with the channel formed by the power supply module 20, the power supply module 10 supplies power, and the heating module 10 works, thereby heating the battery pack. One output end and the other output end of the power supply module 20 may be a heating power supply interface A1 for supplying power to the heating module 10, and the positive output end and the negative output end of the power supply module 20 may be respectively electrically connected with the positive electrode and the negative electrode of the battery pack to supply power to the battery pack. The heating module 10 may include an input interface B1 corresponding to the heating power supply interface A1, one end of the input interface B1 is electrically connected with one end of the heating module 10 through a switch of the first contactor KM1, and the other end of the input interface B1 is electrically connected with the other end of the heating module 10 to form a heating power supply loop.
Optionally, a low temperature control switch K01 is disposed at the position of the battery pack, and a high temperature control switch K02 is disposed at the position of the heating module 10; the low-temperature control switch K01 is closed when the temperature of the high-temperature control switch K02 is lower than the preset first temperature, and the high-temperature control switch K02 is closed when the temperature of the high-temperature control switch K02 is lower than the preset second temperature.
Specifically, the preset first temperature may be less than the preset second temperature, when the temperature of the battery pack is too low and is lower than the preset first temperature, and the temperature of the heating module 10 is lower than the preset second temperature, the low-temperature control switch K01 arranged at the position of the battery pack is closed, the high-temperature control switch K02 arranged at the position of the heating module 10 is closed, at this time, the coil of the first contactor KM1 is electrified, the switch of the first contactor KM1 connected with the heating module 10 is closed, and the power supply module 20 supplies power to the heating module 10 through the switch of the closed first contactor KM1, so that the heating module 10 generates heat to heat the battery pack. When the temperature of the battery pack is higher than a preset first temperature or the temperature of the heating module 10 is higher than a preset second temperature, the low-temperature control switch K01 arranged at the position of the battery pack is turned off, or the high-temperature control switch K02 arranged at the position of the heating module 10 is turned off, at this time, the coil of the first contactor KM1 is not electrified, the switch of the first contactor KM1 connected with the heating module 10 is turned off, the heating module 10 does not work to generate heat, and overheating of the heating module 10 or overhigh temperature of the battery pack is prevented.
Optionally, the first temperature is preset in a range of 0-15 ℃ and the second temperature is preset in a range of 50-70 ℃.
The first temperature is preset to 10 ℃ and the second temperature is preset to 60 ℃ by way of example. When the temperature of the battery pack is lower than 10 ℃ and the temperature of the heating module 10 is lower than 60 ℃, the low-temperature control switch K01 and the high-temperature control switch K02 are both closed, the coil of the first contactor KM1 is electrified, the switch of the first contactor KM1 connected with the heating module 10 is closed, and the power supply module 20 supplies power to the heating module 10 through the closed switch of the first contactor KM1, so that the heating module 10 generates heat to heat the battery pack. When the temperature of the battery pack is higher than 10 ℃ or the temperature of the heating module 10 is higher than 60 ℃, the low-temperature control switch K01 is turned off or the high-temperature control switch K02 is turned off, at this time, the coil of the first contactor KM1 is not electrified, the switch of the first contactor KM1 connected with the heating module 10 is turned off, the heating module 10 does not work to generate heat, and overheating of the heating module 10 or overhigh temperature of the battery pack is prevented.
Optionally, the power supply module 20 includes an external power supply unit and an internal power supply unit, and one of the external power supply unit and the internal power supply unit supplies power to the heating module. Specifically, when the external power supply unit supplies power to the heating module, the commercial power can supply power to the heating module through the external power supply unit. When the internal power supply unit supplies power to the heating module, the electric energy output by the battery pack can be transmitted to the heating module through the internal power supply unit to supply power to the heating module.
Alternatively, both the external power supply unit and the internal power supply unit are electrically connected with the heating module 10; the power supply mode conversion module 30 includes an external power supply control unit and an internal power supply control unit, both of which are electrically connected to the external power supply unit and the internal power supply unit, and the power supply mode conversion module 30 is used for controlling the working states of the external power supply unit and the internal power supply unit.
Specifically, the external power supply control unit is configured to control the external power supply unit to supply power to the heating module 10, and the internal power supply control unit is configured to control the internal power supply unit to supply power to the heating module 10. The external power supply unit may include an AC/DC converter electrically connected to the heating module 10 through the heating power supply interface A1 and the switch of the first contactor KM 1. When the switch of the first contactor KM1 is closed, the external power supply unit may supply power to the heating module 10 through the heating power supply interface A1, so that the heating module 10 heats the battery pack. The internal power supply unit may include a battery pack, and the voltage output by the battery pack is reduced and then used as an output voltage of the internal power supply unit, and when the internal power supply unit is controlled by the internal power supply control unit to supply power to the heating module 10, the output voltage of the internal power supply unit is transmitted to the heating module 10, so as to supply power to the heating module 10.
Optionally, the external power supply control unit includes a second contactor KM2 and an external power supply line, the external power supply line is electrically connected with the heating module 10, and the second contactor KM2 is used for controlling on-off of a path between the internal power supply unit and the heating module 10.
Fig. 3 is a schematic diagram of an external power supply according to a second embodiment of the present utility model. Referring to fig. 1 and 3, two ends of a coil of the second contactor KM2 are respectively electrically connected with two ports of the heating power supply interface A1, and when the coil of the second contactor KM2 is energized, a switch of the second contactor KM2 is turned off. One end of the heating module 10 is electrically connected with the negative electrode of the battery pack, and the other end of the heating module 10 is electrically connected with the positive electrode of the battery pack through the switch of the first contactor KM1 and the switch of the second contactor KM2 in sequence. When the switch of the first contactor KM1 is closed, the external power supply unit supplies power to the heating module 10 through the heating power supply interface A1, at this time, the coil of the second contactor KM2 is energized, the switch of the second contactor KM2 is opened, and the heating module 10 is powered by the external power supply unit and heats the battery pack.
Optionally, the internal power supply control unit includes a third contactor KM3 and a control subunit, the third contactor includes a third contactor switch and a third contactor coil, the battery pack is connected in series with the heating module, and the third contactor coil is used for controlling switching on or switching off of the third contactor switch.
Fig. 4 is a schematic diagram of an internal power supply structure according to a second embodiment of the present utility model. Referring to fig. 1 and 4, one end of the heating module 10 is electrically connected with the negative electrode of the battery pack, and the other end of the heating module 10 is electrically connected with the positive electrode of the battery pack sequentially through the switch of the first contactor KM1, the switch of the third contactor KM3, and the switch of the second contactor KM 2. When the heating power supply interface A1 is not output, the coil of the second contactor KM2 is powered off, at the moment, the switch of the second contactor KM2 is closed, and the internal power supply unit supplies power to the heating module 10. When the switch of the first contactor KM1, the switch of the third contactor KM3 and the switch of the second contactor KM2 are all closed, the heating module 10 is connected to the path of the battery pack, and the heating module 10 is powered by the battery pack and heats the battery pack.
Optionally, the control subunit is powered by the battery pack; alternatively, the control subunit may be configured to provide DC power from the battery pack via a DC/DC transformer 50. Specifically, the voltage output by the battery pack may be directly transmitted to the control subunit, or may be reduced by the DC/DC transformer 50 and then transmitted to the control subunit, and the specific transmission mode may be determined according to the actual requirement of the control subunit, which is not limited herein.
Referring to fig. 4, the internal power supply control unit may optionally include a timing controller 60, where the timing controller 60 controls whether the coil of the third contactor KM3 is energized or not, and the coil of the third contactor KM3 is used to control the switching on or off of the switch of the third contactor KM 3; or/and, the control subunit comprises a button switch SB, the button switch SB is connected in series with the coil of the third contactor KM3, and the button switch SB is used for controlling whether the coil of the third contactor KM3 is electrified or not.
Specifically, the timing controller 60 may control the heating duration of the heating module 10, for example, the timing controller 60 counts the time when the heating module 10 starts heating the battery pack, and after delaying for a preset duration, controls the coil of the third contactor KM3 to be powered off, at this time, the switch of the third contactor KM3 is turned off, and the heating module 10 does not heat the battery pack any more. The preset time period may be 10min, 20min, 30min, 45min, 1h, 2h, etc., and may be specifically determined according to the actual heating requirement, which is not limited herein.
When the button switch SB is pressed down, the coil of the third contactor KM3 is electrified, at the moment, the switch of the third contactor KM3 is closed, the heating module 10 can heat the battery pack, after heating for a preset time, the timing controller controls the coil of the third contactor KM3 to be powered off, at the moment, the switch of the third contactor KM3 is disconnected, and the heating module 10 can stop heating the battery pack.
Optionally, the heating module 10 includes a heater R. The heater R can be a heating wire or a heating plate, and generates heat when working and can supply power for the battery pack.
The battery pack heating system provided in this embodiment includes: the heating module is used for heating the battery pack; the power supply module is used for providing electric energy for the heating module; the power supply mode conversion module is used for controlling the power supply mode of the heating module; the heating control module is electrically connected with the heating module and used for controlling the working state of the heating module according to the on-off state of the heating module; one end of the heating module is electrically connected with the negative electrode of the battery pack, and the other end of the heating module is electrically connected with the positive electrode of the battery pack sequentially through the switch of the first contactor KM1, the switch of the third contactor KM3 and the switch of the second contactor KM 2. According to the battery pack heating system provided by the embodiment, the heating control module is used for controlling the working state of the heating module according to the on-off of the heating control module, and when the switch of the first contactor KM1, the switch of the third contactor KM3 and the switch of the second contactor KM2 are all closed, the heating module is used for heating the battery pack, the circuit structure is simple, and the circuit cost can be reduced.
Note that the above is only a preferred embodiment of the present utility model and the technical principle applied. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, and that various obvious changes, rearrangements, combinations, and substitutions can be made by those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.
Claims (10)
1. A battery pack heating system, comprising:
the heating module is used for heating the battery pack;
the power supply module is used for providing at least two or more power supply modes for providing electric energy for the heating module;
the power supply mode conversion module is used for controlling the power supply mode of the heating module supplied by the power supply module;
and the heating control module is electrically connected with the heating module and used for controlling the working state of the heating module according to the on-off of the heating module.
2. The battery pack heating system of claim 1, wherein the heating control module comprises a low temperature control switch, a high temperature control switch, and a first contactor; the low-temperature control switch, the high-temperature control switch and the coil of the first contactor are connected in series and powered by a direct current power supply, one end of the heating module is electrically connected with one output end of the power supply module through the switch of the first contactor, and the other end of the heating module is electrically connected with the other output end of the power supply module.
3. The battery pack heating system according to claim 2, wherein the low temperature control switch is provided at a position of the battery pack, and the high temperature control switch is provided at a position of the heating module; the low-temperature control switch is closed when the temperature of the low-temperature control switch is smaller than a preset first temperature, and the high-temperature control switch is closed when the temperature of the high-temperature control switch is smaller than a preset second temperature; the preset first temperature is in the range of 0-15 ℃, and the preset second temperature is in the range of 50-70 ℃.
4. The battery pack heating system of claim 1, wherein the power supply module comprises an external power supply unit and an internal power supply unit, one of which supplies power to the heating module.
5. The battery pack heating system of claim 4, wherein the external power supply unit and the internal power supply unit are each electrically connected to the heating module; the power supply mode conversion module comprises an external power supply control unit and an internal power supply control unit, wherein the external power supply control unit and the internal power supply control unit are electrically connected with the external power supply unit and the internal power supply unit, and the power supply mode conversion module is used for controlling the working states of the external power supply unit and the internal power supply unit.
6. The battery pack heating system according to claim 5, wherein the external power supply control unit includes a second contactor and an external power supply line, the external power supply line being electrically connected to the heating module, the second contactor being used to control on-off of a passage of the internal power supply unit and the heating module.
7. The battery pack heating system of claim 6, wherein the internal power supply control unit comprises a third contactor including a third contactor switch and a third contactor coil, the battery pack being in series with the heating module, the third contactor coil for controlling closing or opening of the third contactor switch.
8. The battery pack heating system of claim 7, wherein said control subunit is powered by said battery pack;
or the control subunit provides direct current power after the battery pack is transformed by the DC/DC transformer.
9. The battery pack heating system of claim 7, wherein the control subunit includes a timing controller that controls whether the third contactor coil is energized or not, the third contactor coil being configured to control switching on or off of the third contactor switch;
or/and the combination of the two,
the control subunit comprises a button switch, wherein the button switch is connected with the third contactor coil in series, and the button switch is used for controlling whether the third contactor coil is electrified or not.
10. The battery pack heating system of any of claims 1-9, wherein the heating module comprises a heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322058779.XU CN220420703U (en) | 2023-08-02 | 2023-08-02 | Battery pack heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322058779.XU CN220420703U (en) | 2023-08-02 | 2023-08-02 | Battery pack heating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220420703U true CN220420703U (en) | 2024-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322058779.XU Active CN220420703U (en) | 2023-08-02 | 2023-08-02 | Battery pack heating system |
Country Status (1)
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|---|---|
| CN (1) | CN220420703U (en) |
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2023
- 2023-08-02 CN CN202322058779.XU patent/CN220420703U/en active Active
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