Battery failure detection method and apparatus

A detection method and a technology of a detection device, which are applied in the directions of measuring devices, measuring electricity, and measuring electric variables, etc., and can solve problems such as adverse effects and reductions in battery module capacity

Inactive Publication Date: 2017-01-25
HUATING HEFEI POWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If a single cell in a group of parallel batteries fails, the capacity of the group of parallel batteries will be reduced compared to normal conditions, which will adversely affect the capacity of the entire battery module

Method used

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  • Battery failure detection method and apparatus
  • Battery failure detection method and apparatus
  • Battery failure detection method and apparatus

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Embodiment Construction

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0024] It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

[0025] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not inten...

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Abstract

The invention provides a battery failure detection method and apparatus to provide failure detection for a battery module of an electric vehicle; the method comprises the specific steps: according to acquired residual capacities and residual levels at the beginning of both charge and discharge of the battery module, calculating current capacity of the battery module, comparing the current capacity with nominal capacity in current usage recorded in an SOH (state of health) table, and judging whether unit cell failure is present in the battery module or not; if yes, generating a corresponding failure trouble code, transmitting the failure travel code to a remote management terminal to remind management personnel such that the management personnel may assign technicians in time for maintenance; therefore intelligent detection and monitoring is achieved for an electric vehicle battery module.

Description

technical field [0001] The present invention relates to the technical field of battery management, in particular to a battery failure detection method and device. Background technique [0002] The battery module of an electric vehicle is a power battery pack formed by connecting multiple single batteries in series and parallel. If a single cell in a group of parallel batteries fails, the capacity of the group of parallel batteries will be reduced compared to normal conditions, thereby adversely affecting the capacity of the entire battery module. How to timely detect the failure of a single battery in a battery module is an urgent problem to be solved in the industry at present. Contents of the invention [0003] In view of this, the object of the present invention is to provide a battery failure detection method and device. [0004] A preferred embodiment of the present invention provides a battery failure detection method for failure detection of a battery module of an...

Claims

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Application Information

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IPC IPC(8): G01R31/36
CPCG01R31/396
Inventor 陈正金劳力王扬周鹏
Owner HUATING HEFEI POWER TECH
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