Battery fault diagnosis method and apparatus, and electric vehicle

A technology of battery failure and diagnosis method, applied in the direction of measurement device, measurement of electricity, measurement of electric variables, etc., can solve the problems of erroneous fault handling, fault false alarm, affecting the normal driving of the vehicle, etc., so as to improve the accuracy and avoid false alarms. Effect

Inactive Publication Date: 2019-10-18
安徽沃博源科技有限公司
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Problems solved by technology

[0005] However, due to the differences in structure, material and process of different power batteries, there are also differences in the characteristics of parameters such as temperature and voltage during operation. Therefore, due to these uncertain factors, the fault determined by the BMS may be a false alarm. As a result, the VMS performs wrong fault handling, affecting the normal driving of the vehicle

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  • Battery fault diagnosis method and apparatus, and electric vehicle
  • Battery fault diagnosis method and apparatus, and electric vehicle
  • Battery fault diagnosis method and apparatus, and electric vehicle

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[0023] In order to make the objectives, technical solutions and beneficial technical effects 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 implementation Examples are only some embodiments of the present invention, not all embodiments. 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.

[0024] When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical fi...

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Abstract

The invention provides a battery fault diagnosis method. The method comprises steps: determining whether a power battery unit is faulty preliminarily by monitoring performance parameters of a power battery; if so, carrying out secondary diagnosis on the power battery unit; and sending out alarm information under the condition of determining the fault existence of the faulty power battery unit in the secondary diagnosis. Therefore, the accuracy of determining the battery fault is improved. In addition, the invention also provides a battery fault diagnosis apparatus and an electric vehicle.

Description

【Technical field】 [0001] The invention relates to the technical field of battery management, in particular to a battery fault diagnosis method and device and an electric vehicle. 【Background technique】 [0002] As a new type of clean energy vehicle, electric vehicles have the characteristics of low noise, no pollution, zero emissions, and high energy conversion efficiency. It is a new trend in future automotive development. With the development of electric drive technology, the technology of pure electric vehicles has become increasingly mature, and has been widely promoted and applied. [0003] The power battery is the core component that provides power for electric vehicles, and the safety and cost of power batteries are the main factors affecting the application of electric vehicles. Therefore, the vehicle's control of power batteries, motors and various system components is an important development direction of electric vehicles. [0004] At present, the management and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/382
CPCG01R31/382
Inventor 李穷钱伟潘炳涛
Owner 安徽沃博源科技有限公司
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