Fault processing method and device based on battery management system of pure electric vehicle

A technology of a battery management system and a fault handling method, applied in electric vehicles, electrical devices, circuits or fluid pipelines, etc., can solve problems such as rough classification, complicated procedures, and hazards in the driver's driving process.

Inactive Publication Date: 2021-09-14
DONGFENG MOTOR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The battery management system must always perform fault diagnosis during the start-up and operation of the electric vehicle to ensure the safe operation of the vehicle. With the functional subdivision of the battery management system and the requirements of functional safety, more and more fault codes need to be detected. Different types of fault codes need to be handled differently, and processing mechanisms for different types of faults are added. Most of the existing fault processing mechanisms are roughly classified, which cannot handle more fault types reasonably, and may easily lead to some less serious faults. The fault has set a processing mechanism that may be too strict, but it has caused more serious harm to the driver's driving process
Or set up a separate processing method for each fault, making the program too complicated and difficult to maintain

Method used

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  • Fault processing method and device based on battery management system of pure electric vehicle
  • Fault processing method and device based on battery management system of pure electric vehicle
  • Fault processing method and device based on battery management system of pure electric vehicle

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Embodiment 1

[0038] Such as figure 1 Shown is a schematic flowchart of a fault handling method based on a pure electric vehicle battery management system provided by an embodiment of the present invention. figure 1 The method shown includes the following steps:

[0039] S1: When a certain target fault is detected, the authenticity of the target fault is detected, and if it is determined that the target fault occurs, the fault code corresponding to the target fault is reported;

[0040] Among them, since the controller has gradually added the requirements of functional safety, the design of fault diagnosis has become more complicated than that of traditional controllers, resulting in a large number of fault codes. In order to improve the accuracy and efficiency of fault diagnosis , a battery management system fault handling mechanism design method proposed in this embodiment, according to the different damage caused by different faults to the battery pack, high-voltage environment and the ...

Embodiment 2

[0056] Such as figure 2 Shown is a schematic structural diagram of a fault handling device based on a pure electric vehicle battery management system provided by an embodiment of the present invention, including:

[0057] The fault identification module 201 is used for detecting the authenticity of the target fault after monitoring a certain target fault, and reporting the fault code corresponding to the target fault if it is determined that the target fault occurs;

[0058] The failure response module 202 is configured to determine the failure level of the reported failure code, determine the failure type corresponding to the failure level, and adopt a failure handling mechanism corresponding to the failure type, wherein the higher the failure level, the more serious the failure type corresponding to the failure level, The response time is faster.

[0059] In this embodiment, the above-mentioned device also includes:

[0060] The fault classification module is used to divi...

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Abstract

The invention discloses a fault processing method and device based on a battery management system of a pure electric vehicle, and belongs to the technical field of vehicle fault management. The method comprises the steps: after a certain target fault is monitored, detecting the authenticity of the target fault, and if the method determines that the target fault occurs, reporting a fault code corresponding to the target fault; and determining the fault level of the reported fault code, determining the fault type corresponding to the fault level, and adopting a fault processing mechanism corresponding to the fault type, wherein the higher the fault level is, the more serious the fault type corresponding to the fault level is, and the faster the response time is. Through the more subdivided fault levels and the processing mode thereof, a large number of fault codes can be classified and processed in a modularized mode, and the driving personal safety is improved.

Description

technical field [0001] The invention belongs to the technical field of vehicle fault management, and more specifically relates to a fault processing method and device based on a pure electric vehicle battery management system. Background technique [0002] The battery management system must always perform fault diagnosis during the start-up and operation of the electric vehicle to ensure the safe operation of the vehicle. With the functional subdivision of the battery management system and the requirements of functional safety, more and more fault codes need to be detected. Different types of fault codes need to be handled differently, and processing mechanisms for different types of faults are added. Most of the existing fault processing mechanisms are roughly classified, which cannot handle more fault types reasonably, and may easily lead to some less serious faults. The fault has set up a processing mechanism that may be too strict, but it has caused more serious harm to ...

Claims

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Application Information

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IPC IPC(8): B60L3/00B60R16/023
CPCB60L3/0084B60L3/0046B60R16/0232
Inventor 杨帆米燕马增辉
Owner DONGFENG MOTOR GRP
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