High power battery detection circuit of electric vehicle

Abstract

The invention relates to a high power battery detection circuit of an electric vehicle. The current detection system can not fully satisfy the demands on cost and reliability. The battery detection circuit comprises a current signal processing module, a voltage signal processing module, a power module, a reference voltage module, an A / D conversion module and a differential treatment module. A current signal to be detected is input in the current signal processing module, the output end of the current signal processing module is connected with one output end of the A / D conversion module; a voltage signal to be detected is input in the voltage signal processing module, the output end of the voltage signal processing module is connected with the other output end of the A / D conversion module;and the output ends of the A / D conversion module are connected with the input end of the differential treatment module, and the output end of the differential treatment module is used as the output end of the circuit. The circuit of the invention has high precision and anti-interference capability, wide applicable scope and low cost.

Description

technical field [0001] The invention belongs to the technical field of signal detection and relates to a detection circuit for a high-power battery of an electric vehicle. Background technique [0002] With the increasingly prominent problems of energy and environmental protection, electric vehicles have attracted more and more attention due to their advantages of zero emission, high energy utilization rate, diversified energy sources, simple structure and convenient use, and have gradually become the development direction of contemporary automobiles. . [0003] The energy storage system is the core component of electric vehicles. However, the problems of power batteries in terms of "energy ratio", service life, stability and production costs have not been well resolved, which largely restricts the development of electric vehicles. car development. However, with the emergence of some new energy storage batteries, especially the successful development of lithium-ion batteri...

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Problems solved by technology

[0003] The energy storage system is the core component of electric vehicles. However, the problems of power batteries in terms of "energy ratio", service life, stability and production costs have not been well resolved, which largely restricts the development of electric vehicles. car development

At present, relevant detection systems have appeared on the market, but they cannot fully meet the requirements in terms of cost and reliability. It is very urgent to develop a low-cost, high-precision, and anti-interference high-power automotive battery detection system.

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