CN112406540A - Vehicle storage battery charging fault detection system, vehicle and control method - Google Patents
Vehicle storage battery charging fault detection system, vehicle and control method Download PDFInfo
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- CN112406540A CN112406540A CN201910765911.6A CN201910765911A CN112406540A CN 112406540 A CN112406540 A CN 112406540A CN 201910765911 A CN201910765911 A CN 201910765911A CN 112406540 A CN112406540 A CN 112406540A
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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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
-
- 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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- 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
- Y02T10/72—Electric energy management in electromobility
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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 invention discloses a vehicle storage battery charging fault detection system, a vehicle and a control method, wherein the vehicle storage battery charging fault detection system comprises: the system comprises a high-voltage power supply, a low-voltage power supply, a DC/DC converter, a battery sensor and a vehicle control unit. The DC/DC converter is connected between the high-voltage power supply and the low-voltage power supply so as to convert the high-voltage current output by the high-voltage power supply into low-voltage current capable of charging the low-voltage power supply and charge the low-voltage power supply by using the low-voltage current; the battery sensor is used for acquiring power supply information of the low-voltage power supply; the vehicle control unit is connected with the DC/DC converter and the battery sensor to receive converter information from the DC/DC converter and power supply information from the battery sensor, and to judge whether the low-voltage power supply has charging faults or not according to the power supply information and/or the power supply information. The vehicle storage battery charging fault detection system can accurately detect the charging state of the low-voltage power supply so as to avoid driving danger.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a vehicle storage battery charging fault detection system, a vehicle and a control method of the vehicle storage battery charging fault detection system.
Background
Because the charge state of low-voltage power supply influences new energy vehicles greatly, if new energy vehicles are in the operation, the low-voltage power supply charging fault appears, then can cause the insufficient voltage phenomenon of low-voltage power supply, and then leads to new energy vehicles's operational aspect very dangerous, and traditional new energy vehicles do not have the system that detects the charge state of low-voltage power supply, leads to new energy vehicles's driving state dangerous, exists the improvement space.
Disclosure of Invention
In view of the above, the present invention is directed to a vehicle battery charging fault detection system, which can accurately detect the charging state of a low-voltage power supply to avoid driving risks.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a vehicle battery charging fault detection system, comprising: a high voltage power supply and a low voltage power supply; a DC/DC converter connected between the high voltage power supply and the low voltage power supply to convert a high voltage current output from the high voltage power supply into a low voltage current that can charge the low voltage power supply and charge the low voltage power supply with the low voltage current; the battery sensor is used for acquiring power supply information of the low-voltage power supply; and the vehicle control unit is connected with the DC/DC converter and the battery sensor to receive converter information from the DC/DC converter and power supply information from the battery sensor, and judges whether the low-voltage power supply has charging fault according to the converter information and/or the power supply information.
Further, the converter information of the DC/DC converter includes information of an operating state of the DC/DC converter, a low-voltage and a low-voltage current output to the low-voltage power supply by the DC/DC converter.
Further, the power supply information of the battery sensor includes charging voltage and charging current of the low-voltage power supply, and information on whether a charging loop of the low-voltage power supply is open.
Further, the vehicle control unit communicates with an in-vehicle display, so that when the vehicle control unit determines that the low-voltage power supply has a charging fault, fault display is performed through the in-vehicle display.
Further, the vehicle control unit communicates with a buzzer alarm, so that when the vehicle control unit judges that the low-voltage power supply has a charging fault, the buzzer alarm gives a buzzer prompt.
Compared with the prior art, the vehicle storage battery charging fault detection system has the following advantages:
according to the vehicle storage battery charging fault detection system, the charging state of the low-voltage power supply can be accurately detected, so that a driver can correspondingly adjust the running state of a vehicle according to the charging state of the low-voltage power supply, and driving danger is avoided.
Another object of the present invention is to provide a vehicle including the vehicle battery charging failure detection system described above, which is higher in running safety.
The invention also provides a control method of the vehicle storage battery charging fault detection system, and the control method can enable the detection result of the vehicle storage battery charging fault detection system to be more accurate.
A control method of a vehicle storage battery charging failure detection system according to an embodiment of the invention, the control method includes: detecting converter information of the DC/DC converter; judging whether the working state of the DC/DC converter is abnormal or not according to the converter information of the DC/DC converter; if the working state of the DC/DC converter is abnormal, judging that the low-voltage power supply has charging fault; and if not, further judging whether the low-voltage power supply has charging fault according to the power supply information of the battery sensor.
Further, the power information of the battery sensor includes the charging current of the low-voltage power supply and the information whether the charging loop of the low-voltage power supply is open, and the method for determining whether the low-voltage power supply has a charging fault according to the power information of the battery sensor specifically includes: judging whether the charging loop of the low-voltage power supply is in an open circuit state according to the information whether the charging loop is in the open circuit state or not; if so, judging that the low-voltage power supply has charging fault; and if not, further judging whether the low-voltage power supply has charging faults according to the charging current of the low-voltage power supply.
Further, judge according to the charging current of low voltage power supply that low voltage power supply takes place charging failure, specifically include: and if the charging current of the low-voltage power supply is less than the preset current and the duration time exceeds the first preset time, determining that the low-voltage power supply has charging fault.
Further, the first predetermined time is 1 to 3 minutes.
According to the control method of the vehicle storage battery charging fault detection system, the charging state of the low-voltage power supply can be accurately detected by the vehicle storage battery charging fault detection system through the control method, so that the detection result of the vehicle storage battery charging fault detection system is more accurate, a driver can conveniently and correspondingly adjust the running state of the vehicle according to the more accurate charging state of the low-voltage power supply, and driving danger is avoided.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a vehicle battery charging fault detection system according to an embodiment of the present invention;
fig. 2 is a flowchart of a control method of the vehicle storage battery charging failure detection system according to the embodiment of the invention.
Description of reference numerals:
100-a vehicle storage battery charging fault detection system, 1-a high-voltage power supply, 2-a low-voltage power supply, 3-DC/DC converter, 4-a battery sensor, 5-a vehicle control unit, 6-a high-voltage electric device and 7-a low-voltage electric device.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
A vehicle battery charging failure detection system 100 according to an embodiment of the invention is described below with reference to fig. 1.
The vehicle battery charging failure detection system 100 according to the embodiment of the invention may include: the system comprises a high-voltage power supply 1, a low-voltage power supply 2, a DC/DC converter 3(Direct current/Direct current converter), a battery sensor 4 and a vehicle control unit 5. The vehicle battery charging fault detection system 100 is suitable for application on new energy vehicles. But is not limited thereto.
As shown in fig. 1, a DC/DC converter 3 is connected between the high voltage power supply 1 and the low voltage power supply 2 to convert a high voltage current output from the high voltage power supply 1 into a low voltage current that can charge the low voltage power supply 2 and charge the low voltage power supply 2 with the low voltage current. Specifically, when the vehicle is not started, the high-voltage power supply 1 does not discharge and the high-voltage electric device 6 does not work, and at the moment, the low-voltage power supply 2 supplies power to the low-voltage electric device 7; after the vehicle is started, the high-voltage power supply 1 supplies power to the high-voltage electric device 6, and the DC/DC converter 3 converts high-voltage direct current into low-voltage direct current to supply power to the low-voltage electric device 7 and also to charge the low-voltage power supply 2.
The high voltage power source 1 may be a high voltage power battery, and the low voltage power source 2 may be a low voltage battery, but is not limited thereto.
Because the state of the low-voltage power supply 2 has great influence on the vehicle, if the low-voltage power supply 2 is in power shortage, the vehicle cannot be started; if in the vehicle operation process, low voltage power supply 2 appears charging failure, can cause the insufficient voltage phenomenon, and then leads to the operational aspect of vehicle very dangerous.
In order to detect the charging state of the low-voltage power supply 2, the embodiment of the invention is provided with the battery sensor 4 at the low-voltage power supply 2, wherein the battery sensor 4 is used for collecting power supply information of the low-voltage power supply 2 so as to send the power supply information to the vehicle control unit 5.
Further, the vehicle control unit 5 is connected to the DC/DC converter 3 and the battery sensor 4 to receive converter information from the DC/DC converter 3 and power information from the battery sensor 4, wherein the vehicle control unit 5 is adapted to accurately determine whether the low-voltage power supply 2 has a charging failure according to the converter information and/or the power information. If the vehicle control unit 5 determines that the low-voltage power supply 2 has a charging fault from the received information, the vehicle control unit 5 transmits the information to the driver, so that the driver can make a corresponding determination to control the vehicle, and the running state of the vehicle is correspondingly adjusted to avoid danger.
According to the vehicle storage battery charging fault detection system 100 provided by the embodiment of the invention, the vehicle storage battery charging fault detection system 100 can accurately detect the charging state of the low-voltage power supply 2, so that a driver can correspondingly adjust the running state of the vehicle according to the charging state of the low-voltage power supply 2, and the driving danger is avoided.
As shown in fig. 1, the converter information of the DC/DC converter 3 includes information of the operating state of the DC/DC converter 3, the low-voltage and the low-voltage current output by the DC/DC converter 3 to the low-voltage power supply 2. The DC/DC converter 3 transmits information such as the operating state, the output low-voltage, the output low-voltage current, and the like to the vehicle control unit 5. After the vehicle starts, the vehicle control unit 5 may determine the state of the DC/DC converter 3 according to the received converter information transmitted by the DC/DC converter 3. If the DC/DC converter 3 is in the abnormal operation mode, it may be determined that the low-voltage power supply 2 has a charging fault; if the DC/DC converter 3 is in the normal operation mode, it is necessary to further perform the loop state detection of the low voltage power supply 2, and it is determined whether the charging failure occurs in the low voltage power supply 2.
Further, the power supply information of the battery sensor 4 includes information on the charging voltage and the charging current of the low-voltage power supply 2 and whether or not the charging circuit of the low-voltage power supply 2 is open. The battery sensor 4 transmits the information of the voltage and the current of the low-voltage power supply 2 and whether the charging loop of the low-voltage power supply 2 is open or not, which are acquired in real time, to the vehicle control unit 5. Specifically, the vehicle control unit 5 detects the loop state of the low-voltage power supply 2 according to the information transmitted by the battery sensor 4. If the low-voltage power supply 2 is in an open circuit state, the battery sensor 4 can judge that the low-voltage power supply 2 has a charging fault; if the low voltage power supply 2 is in the on state, the charging current of the low voltage power supply 2 needs to be further detected, and then whether the charging fault occurs in the low voltage power supply 2 can be determined.
Still further, the vehicle control unit 5 detects the charging current of the low-voltage power supply 2 according to the information transmitted from the battery sensor 4. If the low-voltage power supply 2 has no charging current, the relation between the charging time and the first preset time needs to be judged, and if the charging time is not more than the first preset time, the charging current detection of the low-voltage power supply 2 needs to be continued; if the charging time is longer than the first preset time, judging that the low-voltage power supply 2 has a charging fault; if the low-voltage power supply 2 has the charging current, it is determined that the low-voltage power supply 2 has no charging fault.
For example, the first predetermined time may be 2 min; namely, if the charging time is not longer than 2min, the charging current detection of the low-voltage power supply 2 needs to be carried out continuously; and if the charging time is longer than 2min, judging that the low-voltage power supply 2 has charging fault. The first predetermined time is not limited thereto and different types of low voltage power supplies on different vehicles have different first predetermined times.
According to some embodiments of the present invention, the vehicle control unit 5 is adapted to communicate with an in-vehicle display to display a fault through the in-vehicle display when the vehicle control unit 5 determines that the low-voltage power supply 2 has a charging fault. That is, when the vehicle control unit 5 determines that the low-voltage power supply 2 is in charge failure, the information is transmitted to the in-vehicle display, and the in-vehicle display is controlled to display information about reminding the low-voltage power supply 2 of the occurrence of the charge failure, so that a driver can observe the information in time, and correspondingly adjust the running state of the vehicle to avoid driving danger.
According to some embodiments of the invention, the vehicle control unit 5 is in communication with the buzzer alarm, so that when the vehicle control unit 5 determines that the low-voltage power supply 2 has a charging fault, the buzzer alarm gives a buzzer prompt. When the vehicle control unit 5 judges that the low-voltage power supply 2 is in charge failure, the information is transmitted to the buzzer alarm, the buzzer alarm is controlled to give a buzzer prompt to remind a driver of the occurrence of the charge failure of the low-voltage power supply 2, so that the driver can timely perceive the charge failure, and the running state of the vehicle is correspondingly changed to avoid the occurrence of driving danger.
A vehicle according to another aspect embodiment of the present invention includes the vehicle battery charging fault detection system 100 described in the above embodiment. Other configurations of the vehicle, such as transmissions, braking systems, steering systems, etc., are known in the art and well known to those skilled in the art, and therefore will not be described in detail herein.
The invention also provides a control method of the vehicle storage battery charging fault detection system, and the control method can enable the detection result of the vehicle storage battery charging fault detection system 100 to be more accurate.
A control method of the vehicle battery charging failure detection system according to the embodiment of the invention is described below with reference to fig. 2.
As shown in fig. 2, the control method includes the steps of:
after the vehicle is started, firstly, the vehicle control unit 5 detects converter information of the DC/DC converter 3;
judging whether the operating state of the DC/DC converter 3 is abnormal or not according to the converter information of the DC/DC converter 3;
if the working state of the DC/DC converter 3 is abnormal, the charging fault of the low-voltage power supply 2 is judged;
otherwise, whether the low-voltage power supply 2 has charging fault is further judged according to the power supply information of the battery sensor 4.
In the present embodiment, the converter information of the DC/DC converter 3 may include the operating state of the DC/DC converter 3, information of the low-voltage and the low-voltage current output by the DC/DC converter 3 to the low-voltage power supply 2, and the like.
Further, in this embodiment, the power information of the battery sensor 4 may include a charging current of the low-voltage power supply 2, information of whether a charging loop of the low-voltage power supply 2 is open, and the like, and the determining, by the vehicle controller 5 according to the power information transmitted by the battery sensor 4, whether a charging fault occurs in the low-voltage power supply 2 may specifically include:
judging whether the charging loop is in an open circuit state or not according to the information whether the charging loop of the low-voltage power supply 2 is in the open circuit state or not;
if yes, judging that the low-voltage power supply 2 has charging fault;
otherwise, whether the low-voltage power supply 2 has a charging fault is further judged according to the charging current of the low-voltage power supply 2.
As an optional embodiment of the present application, the implementation method for the vehicle control unit 5 to determine that the charging fault occurs in the low-voltage power supply 2 according to the charging current of the low-voltage power supply 2 may include:
if the charging current of the low-voltage power supply 2 is less than the predetermined current and the duration exceeds the first predetermined time, it is determined that a charging failure of the low-voltage power supply 2 occurs at this time.
As a preferred example, the first predetermined time may be, for example, 1 to 3 minutes. Preferably, the first predetermined time may be two minutes. It should be noted that the first predetermined time in the present embodiment is not limited to this, and different types of low-voltage power supplies on different vehicles have different first predetermined times.
In this embodiment, the vehicle control unit 5 detects the charging current of the low-voltage power supply 2 in real time, and determines whether the charging current of the low-voltage power supply 2 is smaller than a predetermined current, where the predetermined current may be flexibly defined in advance by a research and development staff according to an actual situation. In the practical application process of the embodiment, when the vehicle control unit 5 determines that the charging current of the low-voltage power supply 2 is not less than the predetermined current, it is determined that the current low-voltage power supply 2 has no charging fault; when the charging current of the low voltage power supply 2 is determined to be less than the predetermined current, it is further determined whether the charging duration exceeds a first predetermined time, such as two minutes. If the charging duration time does not exceed two minutes, the charging current detection of the low-voltage power supply 2 can be continuously executed; if the charging duration time exceeds two minutes, it is determined that the charging failure occurs in the low-voltage power supply 2.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A vehicle battery charging fault detection system (100), comprising:
a high voltage power supply (1) and a low voltage power supply (2);
a DC/DC converter (3), the DC/DC converter (3) being connected between the high-voltage power supply (1) and the low-voltage power supply (2) to convert a high-voltage current output from the high-voltage power supply (1) into a low-voltage current chargeable to the low-voltage power supply (2) and charge the low-voltage power supply (2) with the low-voltage current;
the battery sensor (4), the said battery sensor (4) is used for gathering the power information of the said low-voltage power supply (2);
the vehicle control unit (5), the vehicle control unit (5) is connected with the DC/DC converter (3) and the battery sensor (4) to receive converter information from the DC/DC converter (3) and power supply information from the battery sensor (4), and whether a charging fault occurs in the low-voltage power supply (2) is judged according to the converter information and/or the power supply information.
2. The vehicle battery charging fault detection system (100) according to claim 1, characterized in that the converter information of the DC/DC converter (3) includes information of an operating state of the DC/DC converter (3), a low-voltage and a low-voltage current output by the DC/DC converter (3) to the low-voltage power supply (2).
3. The vehicle battery charging fault detection system (100) according to claim 1, wherein the power supply information of the battery sensor (4) includes information of a charging voltage, a charging current of the low-voltage power supply (2), and whether a charging loop of the low-voltage power supply (2) is open.
4. The vehicle battery charging fault detection system (100) of claim 1, wherein the vehicle control unit (5) communicates with an in-vehicle display to display a fault via the in-vehicle display when the vehicle control unit (5) determines that a charging fault occurs in the low voltage power supply (2).
5. The vehicle battery charging fault detection system (100) according to claim 1, wherein the vehicle control unit (5) is in communication with a buzzer alarm to provide a buzzer prompt via the buzzer alarm when the vehicle control unit (5) determines that the low-voltage power supply (2) has a charging fault.
6. A vehicle characterized by comprising the vehicle battery charging fault detection system (100) according to any one of claims 1-5.
7. A control method of a vehicle storage battery charging failure detection system, characterized in that the vehicle storage battery charging failure detection system is the vehicle storage battery charging failure detection system according to any one of claims 1 to 5, the control method comprising:
detecting converter information of the DC/DC converter (3);
judging whether the working state of the DC/DC converter (3) is abnormal or not according to the converter information of the DC/DC converter (3);
if the working state of the DC/DC converter (3) is abnormal, determining that the low-voltage power supply (2) has a charging fault;
otherwise, whether the low-voltage power supply (2) has charging fault is further judged according to the power supply information of the battery sensor (4).
8. The control method of a vehicle battery charging failure detection system according to claim 7, wherein the power supply information of the battery sensor (4) includes information on a charging current of the low-voltage power supply (2) and whether a charging loop of the low-voltage power supply (2) is open, and the determining whether a charging failure occurs in the low-voltage power supply (2) according to the power supply information of the battery sensor (4) specifically includes:
judging whether the charging loop of the low-voltage power supply (2) is in an open circuit state according to the information whether the charging loop is in the open circuit state or not;
if yes, determining that the low-voltage power supply (2) has charging fault;
otherwise, whether the low-voltage power supply (2) has charging fault is further judged according to the charging current of the low-voltage power supply (2).
9. The control method of the vehicle battery charging failure detection system according to claim 8, wherein determining that a charging failure occurs in the low-voltage power supply (2) according to the charging current of the low-voltage power supply (2), specifically comprises:
and if the charging current of the low-voltage power supply (2) is less than a preset current and the duration time exceeds a first preset time, determining that the low-voltage power supply (2) has charging fault.
10. The control method of the vehicle battery charging failure detection system according to claim 9, characterized in that the first predetermined time is 1 to 3 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910765911.6A CN112406540A (en) | 2019-08-19 | 2019-08-19 | Vehicle storage battery charging fault detection system, vehicle and control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910765911.6A CN112406540A (en) | 2019-08-19 | 2019-08-19 | Vehicle storage battery charging fault detection system, vehicle and control method |
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| CN112406540A true CN112406540A (en) | 2021-02-26 |
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| CN201910765911.6A Pending CN112406540A (en) | 2019-08-19 | 2019-08-19 | Vehicle storage battery charging fault detection system, vehicle and control method |
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| CN113147503A (en) * | 2021-04-19 | 2021-07-23 | 北京汽车股份有限公司 | Electric vehicle power supply management method |
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Application publication date: 20210226 |