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Battery detection circuit and battery management system

A battery detection and circuit technology, applied in the direction of test circuit, high resistance measurement, circuit breaker test, etc., can solve the problem of reduced accuracy of sampling signals, achieve cost reduction, improve processing efficiency, and simplify circuit structure Effect

Pending Publication Date: 2017-12-29
CONTEMPORARY AMPEREX TECH CO
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  • Abstract
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Problems solved by technology

[0004] However, the isolation unit in the prior art will also introduce new interference signals while isolating the high-voltage grounding signal of the power battery pack, resulting in a decrease in the accuracy of the sampling signal

Method used

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  • Battery detection circuit and battery management system
  • Battery detection circuit and battery management system
  • Battery detection circuit and battery management system

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Embodiment Construction

[0029] The characteristics and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only configured to explain the present invention, not to limit the present invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by showing examples of the present invention.

[0030] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and ...

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Abstract

The invention discloses a battery detection circuit and a battery management system. The circuit comprises a positive relay, a negative relay, a first positive sampling module, a first negative sampling module, a second positive sampling module, a second negative sampling module, and a reference voltage end. A to-be-detected power battery pack, the first positive sampling module, the first negative sampling module and the second negative sampling module are connected with the reference voltage end. According to the embodiment of the invention, the circuit reduces the cost and structural complexity.

Description

technical field [0001] The invention relates to the battery field, in particular to a battery detection circuit and a battery management system. Background technique [0002] Based on the energy saving and environmental protection of electric vehicles, the replacement of fuel vehicles by electric vehicles has become the development trend of the automobile industry. As the core component of electric vehicles, the on-board battery pack is the power guarantee for the normal driving of electric vehicles. In order to reduce the risk of on-board battery pack power supply, it is necessary to design a special battery diagnostic circuit to detect battery safety issues such as high-voltage safety of the battery pack, and specify a corresponding high-voltage safety management strategy to ensure the safety performance of the on-board battery pack in electric vehicles. [0003] At present, in the battery detection circuit, the power battery pack and the sampling unit are usually not conn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36G01R31/327
CPCG01R31/389G01R31/3278G01R31/3644G01R31/3648G01R27/025G01R31/14
Inventor 孙占宇但志敏侯贻真罗杰超张伟
Owner CONTEMPORARY AMPEREX TECH CO
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