CN114683877A - Power battery system and vehicle - Google Patents
Power battery system and vehicle Download PDFInfo
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- CN114683877A CN114683877A CN202011582763.3A CN202011582763A CN114683877A CN 114683877 A CN114683877 A CN 114683877A CN 202011582763 A CN202011582763 A CN 202011582763A CN 114683877 A CN114683877 A CN 114683877A
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- 239000003990 capacitor Substances 0.000 claims abstract description 26
- 230000002457 bidirectional effect Effects 0.000 claims description 10
- 230000002159 abnormal effect Effects 0.000 claims description 5
- 238000010791 quenching Methods 0.000 claims 1
- 230000000171 quenching effect Effects 0.000 claims 1
- JEDPSOYOYVELLZ-UHFFFAOYSA-N COc1nc(OCc2cccc(c2C)-c2ccccc2)ccc1CNCCNC(C)=O Chemical compound COc1nc(OCc2cccc(c2C)-c2ccccc2)ccc1CNCCNC(C)=O JEDPSOYOYVELLZ-UHFFFAOYSA-N 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/64—Constructional details of batteries specially adapted for electric vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
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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
- Y02T10/00—Road transport of goods or passengers
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a power battery system and vehicle belongs to the power battery field, power battery system includes: the system comprises a power battery pack, a high-voltage controller and a low-voltage storage battery; the power battery pack comprises a power battery module and an intelligent circuit breaker, and the high-voltage controller comprises a bus capacitor; the power battery module, the intelligent circuit breaker and the high-voltage controller form a first loop, and the high-voltage controller and the low-voltage storage battery form a second loop; the low-voltage storage battery can be used for pre-charging the bus capacitor in the high-voltage controller through the second loop, and the intelligent circuit breaker can be used for conducting the first loop when the difference between the voltage at two ends of the bus capacitor and the voltage at two ends of the power battery module bus is smaller than a preset threshold value. On the basis of realizing high-voltage electrification, the space occupied by arrangement of high-voltage components in the power battery pack is greatly reduced, and the cost of high-voltage parts is reduced.
Description
Technical Field
The disclosure relates to the field of power batteries, in particular to a power battery system and a vehicle.
Background
With the rapid development of the new energy enterprise industry, the design of a power battery is mature and complete, the mainstream direction of the current development of the power battery is to improve the cell energy and the energy density of a whole package so as to adapt to higher endurance requirements, so that the layout design of the whole package is very important in a relatively nervous battery package space, the grouping number of cells in the battery package is increased while the energy of a single cell is improved, and the arrangement space of other parts in the battery package is compressed.
In the related art, in order to ensure that the vehicle can realize functions of basic high-voltage power on and off, overload short circuit and collision high-voltage cutoff, a BDU (Battery pack disconnection Unit) layout design is often adopted, and high-voltage components such as a fuse, a main relay, a pre-charging set and a pre-charging relay occupy a very large space of a power Battery pack.
Disclosure of Invention
In order to solve the problems in the related art, the present disclosure provides a power battery system and a vehicle.
A first aspect of the present disclosure provides a power battery system, comprising:
the system comprises a power battery pack, a high-voltage controller and a low-voltage storage battery; the power battery pack comprises a power battery module and an intelligent circuit breaker, and the high-voltage controller comprises a bus capacitor;
the power battery module, the intelligent circuit breaker and the high-voltage controller form a first loop, and the high-voltage controller and the low-voltage storage battery form a second loop;
the low-voltage storage battery can be used for pre-charging the bus capacitor in the high-voltage controller through the second loop, and the intelligent circuit breaker can be used for conducting the first loop when the difference between the voltage at two ends of the bus capacitor and the voltage at two ends of the power battery module bus is smaller than a preset threshold value.
Optionally, the power battery system further comprises a DC-DC converter, two ends of the low-voltage storage battery are connected with a low-voltage end of the DC-DC converter, and a high-voltage end of the DC-DC converter and the high-voltage controller form the second loop;
the high-voltage controller and the DC-DC converter are connected in parallel at two ends of the positive and negative buses of the power battery module.
Optionally, the DC-DC converter is a bidirectional DC-DC converter, the power battery module, the intelligent circuit breaker and the bidirectional DC-DC converter form a third loop, and the bidirectional DC-DC converter can reduce the voltage provided by the power battery module after the first loop is conducted and the whole vehicle is powered on, and charge the low-voltage storage battery.
Optionally, the intelligent circuit breaker is a plurality of, be provided with at least one between the first end of high voltage controller and the positive pole of power battery module the intelligent circuit breaker and/or be provided with at least one between the second end of high voltage controller and the negative pole of power battery module the intelligent circuit breaker.
Optionally, the power battery system further comprises: a BMS;
the BMS is respectively connected with the power battery module, the high-voltage controller and the intelligent circuit breaker;
the BMS is used for controlling the intelligent circuit breaker to be closed when detecting that the difference between the voltage at two ends of the bus capacitor and the voltage at two ends of the power battery module bus is smaller than a preset threshold value so as to conduct the first loop.
Optionally, the intelligent circuit breaker further comprises at least one current sensor, and the current sensor is used for detecting the current magnitude of the power battery module bus;
the BMS is also used for obtaining the current and sending a control signal for controlling the intelligent circuit breaker to be disconnected when the current is larger than a preset safe current threshold value and the duration time of the current is larger than the preset time length.
Optionally, the BMS is further configured to detect a cell temperature of the power battery module, and send a control signal for controlling the intelligent circuit breaker to be turned off to the intelligent circuit breaker when the cell temperature is abnormal.
Optionally, the power battery system further comprises an airbag sensor connected to the smart circuit breaker;
the air bag sensor is used for sending a control signal for controlling the intelligent circuit breaker to be disconnected when detecting that the air bag pops up.
Optionally, the smart circuit breaker further comprises an arc extinguishing module;
the arc extinguishing module is used for extinguishing high-voltage electric arcs generated between contact points of the intelligent circuit breaker when the intelligent circuit breaker receives a control signal for controlling the intelligent circuit breaker to be disconnected.
A second aspect of the present disclosure provides a vehicle comprising the power battery system of any one of the first aspect of the present disclosure, and a high voltage electrical load connected to the power battery system.
Through above-mentioned technical scheme, can be through this low pressure battery for high voltage controller's bus capacitor charge, when the voltage difference of bus capacitor's voltage and power battery module is at safe voltage threshold, closed intelligent circuit breaker switches on power battery module and high voltage controller's current return circuit, and this bus capacitor can reduce the electric current rising speed in the return circuit, can guarantee that can not produce the impact injury to high voltage controller when the high pressure is gone up electricity, guarantees the safety of high pressure electricity. In addition, the intelligent circuit breaker replaces the conventional BDU layout design, high-voltage components such as a fuse, a main relay, a pre-charging set, a pre-charging relay and the like are omitted, the space occupied by the arrangement of the high-voltage components in the power battery pack is greatly reduced, and the cost of high-voltage components is reduced.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a schematic diagram of a power cell system shown in accordance with an exemplary embodiment.
FIG. 2 is another schematic diagram of a power cell system shown in accordance with an exemplary embodiment.
FIG. 3 is a block diagram of a vehicle shown in accordance with an exemplary embodiment.
Detailed Description
The following detailed description of the embodiments of the disclosure refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
FIG. 1 is a schematic diagram illustrating a power cell system 100, according to an exemplary embodiment, the power cell system 100, as shown in FIG. 1, including:
a power battery pack 110, a high-voltage controller 120, and a low-voltage battery 130; the power battery pack 110 includes a power battery module 111 and an intelligent circuit breaker 112, and the high-voltage controller 120 includes a bus capacitor 121;
the power battery module 111, the intelligent circuit breaker 112 and the high-voltage controller 120 form a first loop, and the high-voltage controller 120 and the low-voltage battery 130 form a second loop;
the low-voltage battery 130 can pre-charge the bus capacitor 121 in the high-voltage controller 120 through the second loop, and the intelligent circuit breaker 112 can conduct the first loop when a difference between voltages at two ends of the bus capacitor 121 and voltages at two ends of a bus of the power battery module 111 is smaller than a preset threshold.
In fig. 1, the intelligent circuit breaker 112 may be understood as being connected to the positive electrode of the power battery module 111, and may also be understood as being connected to the negative electrode of the power battery module 111, and in another possible implementation manner, the intelligent circuit breakers 112 may be multiple and are respectively connected to the positive electrode of the power battery module 111 and the negative electrode of the power battery module 111 (this manner is not shown in the drawing).
For example, a 12V lead-acid battery may be used as the low-voltage battery 130. In a possible embodiment, the low-voltage battery 130 pre-charges the bus capacitor 121 in the high-voltage controller 120 through the second loop, and the low-voltage battery 130 boosts the low voltage into a high voltage through a DC-DC converter to charge the bus capacitor 121, where the DC-DC converter may be integrated in the high-voltage controller 120, or a separate DC-DC converter may be connected in parallel with the high-voltage controller 120 between the positive and negative buses of the power battery module.
Secondly, it should be understood by those skilled in the art that the high voltage controller 120 may be a motor controller connected to the power battery module 111 and the driving motor, such as a single motor controller, for controlling the operation state of the driving motor, and the high voltage controller 120 may also be an all-in-one controller (e.g. an integrated module of controllers of high voltage components such as a motor controller and an air conditioner controller) for controlling the operation of high voltage devices such as an on-vehicle air conditioner and the driving motor. The intelligent circuit breaker is an electronic device with a small size and integrated by a plurality of electronic elements, has an information processing function, and can be used for switching on and switching off a circuit connected with the intelligent circuit breaker according to different signals.
In the embodiment of the present disclosure, the bus capacitor 121 of the high-voltage controller 120 may be charged by the low-voltage battery 130, when the voltage difference between the voltage of the bus capacitor 121 and the power battery module 111 is at the safe voltage threshold, the intelligent circuit breaker 112 is closed, and the current loop between the power battery module 111 and the high-voltage controller 120 is conducted, the bus capacitor 121 may reduce the current rising speed in the loop, and may ensure that the high-voltage controller 120 and the high-voltage element are not damaged by impact during high-voltage power-on, thereby ensuring the safety of high-voltage power-on. In addition, the intelligent circuit breaker 112 is adopted to replace a conventional BDU (Battery pack disconnection Unit) layout design, and high-voltage components such as a fuse, a main relay, a pre-charging set and a pre-charging relay are omitted, so that the space occupied by the arrangement of the high-voltage components in the pack is greatly reduced, and the cost of the high-voltage components is reduced.
In some optional embodiments, the power battery system 100 further includes a DC-DC converter 201 as shown in fig. 2, two ends of the low-voltage battery 130 are connected to the low-voltage end of the DC-DC converter 201, and the high-voltage end of the DC-DC converter 201 and the high-voltage controller 120 form the second loop;
the high-voltage controller 120 and the DC-DC converter 201 are connected in parallel to two ends of the positive and negative buses of the power battery module 111.
By adopting the scheme, the voltage of the low-voltage storage battery 130 can be increased by arranging the DC-DC converter 201, the bus capacitor 121 in the high-voltage controller 120 is charged, and the pre-charging function in the battery pack is transplanted to the DC-DC converter 201, so that the charging speed of the bus capacitor 121 is higher, and the response time during power-on is shortened.
Further, the DC-DC converter 201 shown in fig. 2 is a bidirectional DC-DC converter, the power battery module 111, the intelligent circuit breaker 112 and the bidirectional DC-DC converter form a third loop, and the bidirectional DC-DC converter can reduce the voltage provided by the power battery module 111 after the first loop is conducted and the whole vehicle is completely powered on, and charge the low-voltage battery 130.
By adopting the scheme, the bidirectional DC-DC converter is arranged, so that when the first loop is conducted, the voltage of the power battery module 111 is reduced through the third loop to charge the low-voltage storage battery 130, the electric quantity of the low-voltage storage battery 130 can be kept, and the situation that the vehicle cannot be powered on and started due to the fact that the low-voltage storage battery 130 is excessively consumed and fed is avoided.
In other optional embodiments, as shown in fig. 2, the number of the intelligent circuit breakers 112 is multiple, at least one intelligent circuit breaker 112 is disposed between the first end of the high-voltage controller 120 and the positive electrode of the power battery module 111, and/or at least one intelligent circuit breaker 112 is disposed between the second end of the high-voltage controller 120 and the negative electrode of the power battery module 111.
By adopting the scheme, the current loop can be timely disconnected when one intelligent circuit breaker 112 fails to be disconnected by arranging the plurality of intelligent circuit breakers 112, and high-voltage components in the circuit are protected.
In further alternative embodiments, the power Battery System 100 further includes a BMS (Battery Management System) 202 as shown in fig. 2;
the BMS202 is connected to the power battery module 111, the high voltage controller 120, and the intelligent circuit breaker 112, respectively;
the BMS202 is configured to control the intelligent circuit breaker 112 to close to conduct the first loop when detecting that a difference between the voltage across the bus capacitor 121 and the voltage across the bus of the power battery module 111 is smaller than a preset threshold.
This scheme of adoption can detect the voltage at power battery module both ends voltage and bus capacitor 121 both ends through the BMS, and timely closed intelligent circuit breaker can not produce the impact injury to high voltage controller when can guaranteeing high-pressure power-on in order to switch on this first return circuit, guarantees the safety of high-pressure power-on.
Further, the intelligent circuit breaker 112 further includes at least one current sensor 204 shown in fig. 2, where the current sensor 204 is configured to detect a current magnitude of the bus of the power battery module 111;
the BMS202 is further configured to obtain the current magnitude, and send a control signal for controlling the intelligent circuit breaker 112 to open when the current magnitude is greater than a preset safe current threshold and a duration greater than the safe current threshold is greater than a preset duration.
The current sensor 204 may be integrated with other electronic components of the intelligent circuit breaker 112 into an integrated intelligent circuit breaker 112, or may be separately disposed on the positive electrode and/or the negative electrode of the power battery module 111.
By adopting the scheme, the current in the loop when the first current loop is conducted can be obtained through the BMS202, and the intelligent circuit breaker 112 is timely disconnected when the current is determined to be abnormal, so that components in the circuit are protected.
Optionally, the BMS202 is further configured to detect a cell temperature of the power battery module 111, and send a control signal for controlling the intelligent circuit breaker 112 to open when the cell temperature is abnormal to the intelligent circuit breaker 112.
This scheme of adoption can detect through BMS202 the electric core temperature of power battery module 111 to break off intelligent circuit breaker 112 under the unusual circumstances of this electric core temperature of affirmation, with protection power battery module 111, avoid the power battery impaired. In some embodiments, the BMS202 can also detect the cell voltage of the power battery module 111, and send a control signal for controlling the intelligent circuit breaker 112 to open when the cell voltage is abnormal to the intelligent circuit breaker 112.
Optionally, as shown in fig. 2, the power battery system 100 further comprises an airbag sensor 203 connected to the intelligent circuit breaker 112;
the airbag sensor 203 is configured to send a control signal for controlling the intelligent circuit breaker 112 to open when detecting that the airbag is ejected to the intelligent circuit breaker 112.
The vehicle is provided with a vehicle control unit, and the vehicle control unit may also be configured to detect a vehicle collision signal and send a control signal for controlling the intelligent circuit breaker 112 to open to the intelligent circuit breaker 112 when the collision signal is detected. This scheme of adoption can in time break off high voltage circuit when the vehicle bumps, can stop the driving motor energy supply for the vehicle to avoid more serious traffic accident, can also avoid the electric leakage to lead to personnel injured.
Optionally, the smart circuit breaker 112 further comprises an arc extinguishing module;
the arc extinguishing module is configured to extinguish a high-voltage arc generated between contact points of the intelligent circuit breaker 112 when the intelligent circuit breaker 112 receives a control signal for controlling the intelligent circuit breaker 112 to open.
The technical scheme is that the arc can be extinguished through the arc extinguishing module to guarantee the safety of vehicles and personnel.
Fig. 3 is a diagram illustrating a vehicle 30 according to an exemplary embodiment, which includes the above-described power battery system 100, and a high-voltage consumer 31 connected to the power battery system 100, where the high-voltage consumer 31 may include, for example, a drive motor, an air conditioning system, and the like. Those skilled in the art will appreciate that, in practice, the vehicle may include other components, fig. 3 only shows the parts relevant to the disclosed embodiments, and other necessary vehicle components are not shown.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. A power battery system, comprising:
the system comprises a power battery pack, a high-voltage controller and a low-voltage storage battery; the power battery pack comprises a power battery module and an intelligent circuit breaker, and the high-voltage controller comprises a bus capacitor;
the power battery module, the intelligent circuit breaker and the high-voltage controller form a first loop, and the high-voltage controller and the low-voltage storage battery form a second loop;
the low-voltage storage battery can be used for pre-charging the bus capacitor in the high-voltage controller through the second loop, and the intelligent circuit breaker can be used for conducting the first loop when the difference between the voltage at two ends of the bus capacitor and the voltage at two ends of the power battery module bus is smaller than a preset threshold value.
2. The power battery system of claim 1, further comprising a DC-DC converter, wherein both ends of the low-voltage battery are connected to a low-voltage end of the DC-DC converter, and a high-voltage end of the DC-DC converter and the high-voltage controller form the second loop;
the high-voltage controller and the DC-DC converter are connected in parallel at two ends of the positive and negative buses of the power battery module.
3. The power battery system of claim 2, wherein the DC-DC converter is a bidirectional DC-DC converter, the power battery module, the intelligent circuit breaker and the bidirectional DC-DC converter form a third loop, and the bidirectional DC-DC converter is capable of reducing the voltage provided by the power battery module and charging the low-voltage battery after the first loop is conducted and the entire vehicle is completely powered on.
4. The power battery system of claim 1, wherein the number of intelligent circuit breakers is multiple, at least one intelligent circuit breaker is arranged between the first end of the high-voltage controller and the positive pole of the power battery module, and/or at least one intelligent circuit breaker is arranged between the second end of the high-voltage controller and the negative pole of the power battery module.
5. The power cell system of any of claims 1-4, further comprising: a BMS;
the BMS is respectively connected with the power battery module, the high-voltage controller and the intelligent circuit breaker;
the BMS is used for controlling the intelligent circuit breaker to be closed when detecting that the difference between the voltage at two ends of the bus capacitor and the voltage at two ends of the power battery module bus is smaller than a preset threshold value so as to conduct the first loop.
6. The power battery system according to claim 5, wherein the intelligent circuit breaker further comprises at least one current sensor for detecting the current magnitude of the power battery module bus;
the BMS is also used for obtaining the current and sending a control signal for controlling the intelligent circuit breaker to be disconnected when the current is larger than a preset safe current threshold value and the duration time of the current is larger than the preset time length.
7. The power battery system of claim 5, wherein the BMS is further configured to detect a cell temperature of the power battery module, and to send a control signal to the intelligent circuit breaker to control the intelligent circuit breaker to open if the cell temperature is abnormal.
8. The power battery system of any of claims 1-4, further comprising an airbag sensor coupled to the smart circuit breaker;
the air bag sensor is used for sending a control signal for controlling the intelligent circuit breaker to be disconnected when detecting that the air bag pops up.
9. The power battery system of any of claims 1-4, wherein the smart circuit breaker further comprises an arc quenching module;
the arc extinguishing module is used for extinguishing high-voltage electric arcs generated between contact points of the intelligent circuit breaker when the intelligent circuit breaker receives a control signal for controlling the intelligent circuit breaker to be disconnected.
10. A vehicle, characterized in that it comprises a power battery system according to any one of claims 1-9, and a high-voltage electrical load connected to said power battery system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011582763.3A CN114683877A (en) | 2020-12-28 | 2020-12-28 | Power battery system and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011582763.3A CN114683877A (en) | 2020-12-28 | 2020-12-28 | Power battery system and vehicle |
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| CN114683877A true CN114683877A (en) | 2022-07-01 |
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Cited By (1)
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| CN117465235A (en) * | 2023-12-26 | 2024-01-30 | 合众新能源汽车股份有限公司 | Battery pack, control system, vehicle and battery pack control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117465235A (en) * | 2023-12-26 | 2024-01-30 | 合众新能源汽车股份有限公司 | Battery pack, control system, vehicle and battery pack control method |
| CN117465235B (en) * | 2023-12-26 | 2024-03-22 | 合众新能源汽车股份有限公司 | Battery pack, control system, vehicle and battery pack control method |
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