Battery system fault diagnosis method and device

A battery system and fault diagnosis technology, which is applied to measuring devices, measuring electricity, and measuring electrical variables, etc., can solve problems such as unfixed fault confirmation time, and achieve the effect of preventing misjudgment

Active Publication Date: 2015-03-25
深蓝汽车科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This kind of fault diagnosis mechanism has the problem that the confirmation time of fault occurrence is not fixed, and the confirmation time of whether the fault is eliminated is also not fixed.

Method used

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  • Battery system fault diagnosis method and device
  • Battery system fault diagnosis method and device
  • Battery system fault diagnosis method and device

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Embodiment Construction

[0044] 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 only some of the embodiments of the present invention, 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 making creative efforts belong to the protection scope of the present invention.

[0045] In the embodiment of the present invention, the battery system failure is detected by judging the failure time within a certain period of diagnosis time to determine whether there is a failure in the battery system, so that redundant processing can be effectively performed, and the time when the failure occurs or is eliminated can be determined.

[0046] figure 1 The battery system fault detection method provided for the present invention ...

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Abstract

The embodiment of the invention provides a battery system fault diagnosis method and device. When the first state of a battery system is detected to meet the first state fault diagnosis strategy, the diagnosis time and the fault time are counted; under the condition that the counting value of the diagnosis time reaches the diagnosis time threshold value, whether faults happen to the battery system or not is judged by judging whether the counting value of the fault time exceeds the fault time threshold value or not. By means of the battery system fault diagnosis method and device, redundancy processing is conducted on signal interference or occasional events, and meanwhile the time when faults happen and the time when faults are eliminated can be relatively accurately determined.

Description

technical field [0001] The invention belongs to the technical field of fault handling, and in particular relates to a battery system fault diagnosis method and device. Background technique [0002] The battery management system is the manager of the use of power batteries, and the design of its fault diagnosis mechanism is crucial to the reliability of the battery system. At the same time, due to the harsh working environment of the battery system and the complex electronic control system, the various status information of the battery system collected will inevitably be disturbed, such as the occasional failure of auxiliary components, occasional poor contact of the wiring harness, and recovery of various performance parameters after exceeding the standard instantaneously Normal and other events happen from time to time. If the fault diagnosis mechanism of the battery management system is unreasonable and does not carry out redundant processing for such occasional faults, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
Inventor 张后亮姚振辉杨辉前苏岭贺刚周安健任勇邓柯军张友群
Owner 深蓝汽车科技有限公司
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