CN117719343A - Method for preventing false alarm fault of power battery system, battery management system, vehicle and medium - Google Patents
Method for preventing false alarm fault of power battery system, battery management system, vehicle and medium Download PDFInfo
- Publication number
- CN117719343A CN117719343A CN202410138197.9A CN202410138197A CN117719343A CN 117719343 A CN117719343 A CN 117719343A CN 202410138197 A CN202410138197 A CN 202410138197A CN 117719343 A CN117719343 A CN 117719343A
- Authority
- CN
- China
- Prior art keywords
- whole vehicle
- power battery
- battery system
- vehicle controller
- mode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000004891 communication Methods 0.000 claims abstract description 21
- 230000006870 function Effects 0.000 claims abstract description 21
- 238000003745 diagnosis Methods 0.000 claims abstract description 11
- 238000001514 detection method Methods 0.000 abstract description 20
- 238000012360 testing method Methods 0.000 abstract description 13
- 238000012423 maintenance Methods 0.000 abstract description 11
- 238000012795 verification Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a method for preventing false alarm fault of a power battery system, a battery management system, a vehicle and a medium, wherein the method comprises the following steps: acquiring a validity signal of the whole vehicle controller and a Counter check message of the whole vehicle controller; identifying whether the power battery system is in a single-package mode or a whole vehicle mode according to the acquired information; if the power battery system is in the single-packet mode, stopping performing communication fault diagnosis on the signals of the whole vehicle controller, enabling other functions to operate normally, and sending out the signals of the power battery system in the single-packet mode; if the power battery system is in the whole vehicle mode, the communication fault diagnosis is continuously carried out on the signals of the whole vehicle controller, other functions are normally operated, and the signals of the power battery system in the whole vehicle mode are sent out. By adopting the invention, the communication faults can be prevented from being wrongly reported during the offline detection, the maintenance detection or the bench test, the efficiency of the offline detection and the maintenance detection and the fault diagnosis accuracy are improved, and the bench test is ensured to be normally carried out.
Description
Technical Field
The invention belongs to the field of battery management of new energy automobiles, and particularly relates to a method for preventing false alarm faults of a power battery system, a battery management system, a vehicle and a medium.
Background
The battery management system samples the voltage, the current and the temperature in real time, and then estimates variables such as the residual capacity, the efficiency state, the internal resistance of the battery and the like which are not directly measured in real time through the directly collected basic data (such as the voltage, the current and the temperature). The battery management system transmits various information to the display instrument and other control units in real time through the communication bus, and provides information references such as power battery state, driving mileage and the like for a driver.
The power battery system (comprising a power battery and a battery management system) is completely different from the electrical environment when the assembly offline detection, maintenance detection and bench test are completed and the whole vehicle is operated, and the single power battery system has no signal interaction with other controllers of the whole vehicle when the offline detection, maintenance detection and bench test are carried out. In order to solve this problem, the power battery can work normally, and the common practice of the current battery manufacturer is as follows: and the development of a special upper computer simulates other controllers of the whole vehicle to send related signals. However, the scheme is complex in operation, and the period and cost of developing a special upper computer are too high; in addition, the scheme has poor universality, cannot be compatible with different power battery systems, has different project controllers and signals, and needs a special upper computer for each project power battery system.
CN109398092a discloses a method, device and equipment for preventing false alarm fault of whole vehicle, which establishes communication connection between the whole vehicle controller and the motor controller and between the whole vehicle controller and the battery management system in a preset verification time before collecting parameter information of the motor controller and the battery management system, so as to prevent false alarm fault when detecting that the communication of the motor controller or the battery management system is lost, make fault detection of the vehicle more accurate and reliable, improve working efficiency and improve safety of the vehicle. But it is not suitable for the individual use scenarios of the power battery system such as assembly and offline inspection, maintenance inspection, bench test, etc.
Disclosure of Invention
The invention aims to provide a method for preventing false alarm faults of a power battery system, a battery management system, a vehicle and a medium, so as to avoid false alarm communication faults during offline detection or maintenance detection or bench test.
In a first aspect, the present invention provides a method for preventing false alarm failure of a power battery system, the method comprising:
and acquiring a validity signal of the whole vehicle controller and a Counter check message of the whole vehicle controller.
Identifying the working mode of the power battery system according to the availability signal of the whole vehicle controller and the Counter check message of the whole vehicle controller; the working mode is a single-package mode or a whole vehicle mode.
If the power battery system is in the single-package mode, the communication fault diagnosis is stopped for the signals of the whole vehicle controller, other functions normally run, and the signals of the power battery system in the single-package mode are sent out.
If the power battery system is in the whole vehicle mode, the communication fault diagnosis is continuously carried out on the signals of the whole vehicle controller, other functions are normally operated, and the signals of the power battery system in the whole vehicle mode are sent out.
Preferably, the method for identifying the working mode of the power battery system comprises the following steps:
if the availability signal of the whole vehicle controller is valid and the Counter check message of the whole vehicle controller meets the single-packet mode condition, the power battery system is judged to be in the single-packet mode.
If the availability signal of the whole vehicle controller is valid, the Counter check message of the whole vehicle controller does not meet the single-packet mode condition, and the power battery system is judged to be in the whole vehicle mode.
Preferably, if the validity signal of the whole vehicle controller is invalid, judging that the whole vehicle controller has communication faults.
Preferably, if the Counter check message is a preset count value and the duration is longer than the preset identification time, the Counter check message of the whole vehicle controller meets the single-packet mode condition, otherwise, the Counter check message of the whole vehicle controller does not meet the single-packet mode condition.
Preferably, the preset count value is 15.
Preferably, the preset recognition time is 1s.
Preferably, the other functions include a high voltage power-on and power-off function, a charge and discharge function, and a thermal management function of the battery management system.
In a second aspect, the present invention provides a battery management system, where the battery management system includes a processor and a memory connected to the processor, where the memory stores a computer readable program, and when the computer readable program is called by the processor, the method for preventing false alarm failure of the power battery system can be executed.
In a third aspect, the present invention provides a vehicle comprising the battery management system described above.
In a fourth aspect, the present invention provides a medium having stored therein a computer readable program, which when invoked, is capable of performing the above-described method of preventing false positive failures of a power battery system.
According to the method and the device, whether the power battery system is in a single-package mode or a whole vehicle mode is identified according to the validity signal of the whole vehicle controller and the Counter check message of the whole vehicle controller, so that possible use scenes (such as offline detection, maintenance detection and bench test) corresponding to the single-package mode of the power battery system are known. The battery management system stops carrying out communication fault diagnosis on the signals of the whole vehicle controller under the use scenes, but other functions of the battery management system normally operate, so that the problem of false alarm communication fault under the use scenes is avoided, the efficiency of offline detection and maintenance detection and the fault diagnosis accuracy can be improved, and the bench test is ensured to be normally carried out. In addition, the invention can also improve the convenience of the power battery system in-line detection, bench test and after-sale maintenance, has higher compatibility and can be suitable for different power battery projects.
Drawings
FIG. 1 is a flow chart of a method for preventing false failure of a power battery system in an embodiment of the invention;
FIG. 2 is a flow chart of a method of identifying an operational mode of a power cell system in some embodiments.
Detailed Description
For a more complete understanding of the nature and the technical content of the embodiments of the present invention, reference should be made to the following detailed description of embodiments of the invention, taken in conjunction with the accompanying drawings, which are meant to be illustrative only and not limiting of the embodiments of the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing embodiments of the invention only and is not intended to be limiting of the invention.
In the following description, reference is made to "some embodiments" which describe a subset of all possible embodiments, but it is to be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with one another without conflict.
The battery management system is used as an important controller on the whole vehicle, counter verification is set for the messages and signals interacted between the whole vehicle controller and the battery management system, and when the Counter verification message sent by the sending node is inconsistent with the receiving node, the receiving node should record the corresponding fault code. When the power battery system is normally used on the whole vehicle, the Counter check message sent to the battery management system by the whole vehicle controller is continuously and circularly sent in a range of 0-14, and the Counter check message is checked after the signal of the whole vehicle controller is received by the battery management system.
As shown in fig. 1, a method for preventing a false alarm fault of a power battery system in an embodiment of the present invention is executed by a processor in a battery management system, and includes:
step one, acquiring a validity signal of the whole vehicle controller and a Counter check message of the whole vehicle controller. It should be noted that, if the power battery system is used on the whole vehicle, the validity signal of the whole vehicle controller and the Counter check message of the whole vehicle controller are sent to the battery management system by the whole vehicle controller through the CAN bus. If the power battery system is used independently (such as offline detection, maintenance detection and bench test), the battery management system is in communication connection with the detection equipment or the test equipment through the CAN bus, and the vehicle controller validity signal and the Counter check message of the vehicle controller are sent to the battery management system through the CAN bus by the corresponding detection equipment or the test equipment to simulate the vehicle controller. In the communication CAN protocol, the information of the validity signal of the whole vehicle controller, the length, the position, the precision, the receiving party and the like of the Counter check message are defined.
Step two, identifying the working mode of the power battery system according to the availability signal of the whole vehicle controller and the Counter check message of the whole vehicle controller; the working mode is a single-package mode or a whole vehicle mode. In some embodiments, a method of identifying an operating mode of a power battery system (see fig. 2) includes the steps of:
s11, judging whether the validity signal of the whole vehicle controller is valid, if so, executing S13, otherwise, executing S12.
S12, judging that the whole vehicle controller has communication faults, and ending. When the communication problem occurs in the whole vehicle, the acquisition of the validity signal of the whole vehicle controller is not influenced, and the validity signal of the whole vehicle controller is invalid at the moment; therefore, whether the current vehicle controller signal is available can be determined by identifying the vehicle controller validity signal.
S13, judging whether the Counter check message of the whole vehicle controller meets the single-packet mode condition, if so, executing S14, otherwise, executing S15.
In some embodiments, the method for determining whether the Counter check message of the whole vehicle controller meets the single packet mode condition is as follows: if the Counter check message is a preset count value and the duration is longer than the preset identification time, the Counter check message of the whole vehicle controller meets the single-packet mode condition, otherwise, the Counter check message of the whole vehicle controller does not meet the single-packet mode condition. In some embodiments, the preset count value is 15, and the preset identification time is 1s, that is, if the Counter check message is 15 and the duration is greater than 1s, the Counter check message indicating the whole vehicle controller satisfies the single packet mode condition; otherwise, the Counter check message of the whole vehicle controller does not meet the single-packet mode condition. The preset identification time is set to be 1s reasonably, so that the false identification of the working mode caused by 15 accidental occurrences can be avoided.
S14, judging that the power battery system is in a single-package mode, and ending.
S15, judging that the power battery system is in a whole vehicle mode, and ending.
And thirdly, under the condition that the power battery system is in a single-package mode, stopping carrying out communication fault diagnosis on the signals of the whole vehicle controller, and normally operating other functions of the battery management system, wherein the battery management system sends out the signals of the power battery system in the single-package mode. As an example, the battery management system sends a signal that the power battery system is in a single-packet mode to the CAN bus, so that other controllers CAN recognize the battery management system data, and maintenance or test personnel CAN know the working mode of the power battery system conveniently. In some embodiments, the other functions include a high voltage power up and down function of the battery management system, a charge and discharge function of the battery management system, and a thermal management function of the battery management system.
And step four, under the condition that the power battery system is in the whole vehicle mode, continuing to carry out communication fault diagnosis on the signals of the whole vehicle controller, and normally operating other functions of the battery management system, and sending out the signals of the power battery system in the whole vehicle mode by the battery management system. As an example, the battery management system sends a signal that the power battery system is in the whole vehicle mode to the CAN bus, so that the current working mode of the power battery system CAN be known conveniently.
The embodiment of the invention also provides a battery management system, which comprises a processor and a memory connected with the processor, wherein a computer readable program is stored in the memory, and when the computer readable program is called by the processor, the method for preventing the false alarm fault of the power battery system can be executed.
The embodiment of the invention also provides a vehicle which comprises the battery management system.
The embodiment of the invention also provides a medium, wherein a computer readable program is stored in the medium, and when the computer readable program is called, the method for preventing the false alarm fault of the power battery system can be executed.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention.
Claims (10)
1. A method for preventing false positive failures in a power cell system, comprising:
acquiring a validity signal of the whole vehicle controller and a Counter check message of the whole vehicle controller;
identifying the working mode of the power battery system according to the availability signal of the whole vehicle controller and the Counter check message of the whole vehicle controller; the working mode is a single-packet mode or a whole vehicle mode;
if the power battery system is in the single-package mode, stopping performing communication fault diagnosis on the signal of the whole vehicle controller, enabling other functions to operate normally, and sending out the signal of the power battery system in the single-package mode;
if the power battery system is in the whole vehicle mode, the communication fault diagnosis is continuously carried out on the signals of the whole vehicle controller, other functions are normally operated, and the signals of the power battery system in the whole vehicle mode are sent out.
2. The method for preventing false positive failures of a power battery system according to claim 1, wherein: the method for identifying the working mode of the power battery system comprises the following steps:
if the availability signal of the whole vehicle controller is valid and the Counter check message of the whole vehicle controller meets the single-packet mode condition, judging that the power battery system is in the single-packet mode;
if the availability signal of the whole vehicle controller is valid, the Counter check message of the whole vehicle controller does not meet the single-packet mode condition, and the power battery system is judged to be in the whole vehicle mode.
3. The method for preventing false positive failures of a power battery system according to claim 2, wherein: and if the validity signal of the whole vehicle controller is invalid, judging that the whole vehicle controller has communication faults.
4. The method for preventing false positive failures of a power battery system according to claim 2, wherein: if the Counter check message is a preset count value and the duration is longer than the preset identification time, the Counter check message of the whole vehicle controller meets the single-packet mode condition, otherwise, the Counter check message of the whole vehicle controller does not meet the single-packet mode condition.
5. The method for preventing false positive failures of a power battery system according to claim 4, wherein: the preset count value is 15.
6. The method for preventing false positive failures of a power battery system according to claim 4, wherein: the preset identification time is 1s.
7. A method of preventing false positive failures of a power cell system according to any one of claims 1 to 6, characterized in that: the other functions include a high-voltage power-on and power-off function, a charge and discharge function, and a thermal management function of the battery management system.
8. A battery management system comprising a processor and a memory coupled to the processor, characterized by: a computer readable program stored in the memory, the computer readable program when invoked by a processor, is capable of executing the method for preventing false positive faults of a power battery system according to any one of claims 1 to 7.
9. A vehicle, characterized in that: comprising the battery management system of claim 8.
10. A medium, characterized by: a computer readable program stored therein, which when called, is capable of executing the method of preventing false positive failures of a power battery system according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410138197.9A CN117719343A (en) | 2024-01-31 | 2024-01-31 | Method for preventing false alarm fault of power battery system, battery management system, vehicle and medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410138197.9A CN117719343A (en) | 2024-01-31 | 2024-01-31 | Method for preventing false alarm fault of power battery system, battery management system, vehicle and medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117719343A true CN117719343A (en) | 2024-03-19 |
Family
ID=90201921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410138197.9A Pending CN117719343A (en) | 2024-01-31 | 2024-01-31 | Method for preventing false alarm fault of power battery system, battery management system, vehicle and medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117719343A (en) |
-
2024
- 2024-01-31 CN CN202410138197.9A patent/CN117719343A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105511448A (en) | Integrated automotive diagnostic instrument and diagnosing method thereof | |
| CN102393733B (en) | Failure diagnosis method, fault diagnosis instrument and system thereof, new energy automobile | |
| JPS6294443A (en) | Diagnosis system for vehicle | |
| CN105068923A (en) | Vehicle test method and apparatus | |
| CN108602449B (en) | Battery management device | |
| CN114454774B (en) | Battery pack thermal runaway early warning system and method | |
| CN110995823B (en) | Vehicle-mounted terminal offline processing method, device, storage medium and device | |
| CN112255556B (en) | Battery pack offline detection method and system | |
| CN113808299A (en) | Vehicle fault snapshot storage method, device and equipment based on fault system | |
| CN111142504B (en) | Bus detection device and method | |
| CN117719343A (en) | Method for preventing false alarm fault of power battery system, battery management system, vehicle and medium | |
| CN205353756U (en) | Automatic monitoring devices of automobile fault based on OBD interface | |
| CN114089119A (en) | High-voltage loop fault positioning method and device, electric vehicle and storage medium | |
| CN112509176B (en) | Fault repair method and device based on vehicle data | |
| CN103649861A (en) | Documentation of faults in a fault memory of a motor vehicle | |
| CN113434411A (en) | TIAS function test method and system | |
| CN220323516U (en) | Fault early warning system and vehicle | |
| CN113815636A (en) | Vehicle safety monitoring method and device, electronic equipment and storage medium | |
| CN113848854B (en) | Vehicle-mounted remote terminal fault diagnosis method and system | |
| CN114114017B (en) | Method, device and system for testing power-down logic of battery management system | |
| CN117872199A (en) | Battery health diagnosis method, diagnosis device, system and storage medium | |
| Thurber et al. | Implementation of fault detection and diagnostics in an intelligent vehicle electrical system | |
| WO2021165734A1 (en) | Vehicle monitoring & troubleshooting system | |
| CN112882456B (en) | OBD equipment | |
| CN114347929A (en) | Electric automobile operation fault diagnosis method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |