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Battery fault detection method and apparatus

A battery fault detection and fault detection technology, which is applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve problems such as failure to guarantee, battery module explosion, battery thermal instability, etc., and achieve the goal of improving maintenance efficiency and quality Effect

Inactive Publication Date: 2017-01-25
HUATING HEFEI POWER TECH
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Problems solved by technology

Although all battery cells are screened, differences between batteries are unavoidable, such as the absence of impurities in the electrolyte of each battery cell cannot be guaranteed
During the working process of the battery module, if there is a micro-short circuit in one of the battery cells connected in parallel due to impurities, the battery will experience thermal instability, which is very likely to trigger a chain reaction and cause the battery module to explode.

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  • Battery fault detection method and apparatus
  • Battery fault detection method and apparatus
  • Battery fault detection method and apparatus

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Embodiment Construction

[0022] 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.

[0023] 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.

[0024] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not inten...

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Abstract

An embodiment of the invention provides a battery fault detection method and apparatus to provide intelligent fault detection for a battery module in an electric vehicle; when a unit cell with a fault in the battery module is discovered, fault information is notified to a user such that the user may maintain the electric vehicle in time; during maintenance, the user may also log in to a server through an intelligent terminal to acquire specific fault information and provide for a maintainer, such that maintenance efficiency and quality are improved.

Description

technical field [0001] The present invention relates to the technical field of battery management, in particular to a battery fault detection method and device. Background technique [0002] The battery module in the existing electric vehicle is a power battery pack formed by connecting a plurality of battery cells in series and parallel with capacity and internal resistance within a certain range. Although all battery cells are screened, differences between batteries are unavoidable, such as the absence of impurities in the electrolyte of each battery cell cannot be guaranteed. During the working process of the battery module, if there is a micro-short circuit in one of the battery cells connected in parallel due to impurities, the battery will experience thermal instability, which is very likely to trigger a chain reaction and cause the battery module to explode. . How to timely discover the faulty battery cells in the battery module is an urgent problem to be solved in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
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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