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Fault diagnosis method and device, electronic equipment and readable storage medium

A fault diagnosis and fault information technology, applied in the automotive field, can solve the problems of insufficient low-voltage battery fault detection accuracy and inaccurate fault location, and achieve the effect of avoiding startup failure and fine diagnosis.

Pending Publication Date: 2021-09-03
BAIC GRP ORV CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a fault diagnosis method, device, electronic equipment, and readable storage medium to solve the problems of insufficient fault detection accuracy and imprecise fault location in existing low-voltage batteries of hybrid electric vehicles

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  • Fault diagnosis method and device, electronic equipment and readable storage medium
  • Fault diagnosis method and device, electronic equipment and readable storage medium
  • Fault diagnosis method and device, electronic equipment and readable storage medium

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Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0036] Please refer to figure 1 , figure 1 A schematic flow chart of a fault diagnosis method provided by an embodiment of the present invention;

[0037] An embodiment of the present invention provides a fault diagnosis method, which is applied to a low-voltage battery pack of a hybrid electric vehicle; the low-voltage battery pack is composed of a first battery and a second battery connected in series, and is used to provide power The control syste...

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Abstract

The embodiment of the invention provides a fault diagnosis method and device, electronic equipment and a readable storage medium, and relates to the technical field of automobiles, the fault diagnosis method and device are applied to a low-voltage storage battery pack of a hybrid electric vehicle, and the low-voltage storage battery pack is composed of a first storage battery and a second storage battery which are connected in series and used for supplying power to a whole vehicle control system of the hybrid electric vehicle; the first storage battery is used for supplying power to an engine of the hybrid electric vehicle; the method comprises the steps of detecting a first voltage value of the low-voltage storage battery pack; if the first voltage value meets a first early warning condition, executing at least one of the following operations: judging whether a second voltage value of the first storage battery meets a second early warning condition, and if not, reporting fault information of the first storage battery; and judging whether a third voltage value of the second storage battery meets a third early warning condition, and if not, reporting fault information of the second storage battery. The problems that the fault detection precision of a low-voltage storage battery of an existing hybrid electric vehicle is not enough, and fault positioning is not accurate are solved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of automobiles, and in particular to a fault diagnosis method, device, electronic equipment and readable storage medium. Background technique [0002] Disadvantages of low-voltage battery fault detection for hybrid electric vehicles at present: [0003] 1) At present, the controller only monitors the 24V voltage, considering the overvoltage and undervoltage, and cannot realize the fine detection of the abnormal voltage of the low-voltage battery; [0004] 2) When only monitoring the 24V voltage for undervoltage and overvoltage, when the internal voltage of the low-voltage battery is unbalanced, it will affect the service life of the battery. Contents of the invention [0005] Embodiments of the present invention provide a fault diagnosis method, device, electronic equipment, and readable storage medium to solve the problems of insufficient fault detection accuracy and imprecise f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L3/00
CPCB60L3/0046
Inventor 周镇领
Owner BAIC GRP ORV CO LTD
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