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Power battery health state evaluation method and device, storage medium and electronic equipment

A technology of health state and power battery, which is applied in the direction of measuring device, electricity measurement, and electric variable measurement, etc. It can solve problems such as low accuracy and difficulty in evaluating the health state of power batteries, and achieve the effect of reducing time cost and meeting the needs of rapid evaluation

Pending Publication Date: 2020-04-10
ZHUHAI YINLONG ELECTRICAL APPLIANCES +1
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for evaluating the state of health of a power battery to solve the technical problems of difficulty in evaluating the state of health of a power battery and low accuracy

Method used

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  • Power battery health state evaluation method and device, storage medium and electronic equipment
  • Power battery health state evaluation method and device, storage medium and electronic equipment
  • Power battery health state evaluation method and device, storage medium and electronic equipment

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Embodiment Construction

[0042] In order to better understand the purpose, structure and function of the present invention, a method and device for evaluating the state of health of a power battery according to the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0043] The present invention selects the battery capacity as the judging parameter of the battery health state, by the formula The current state of health of the lithium titanate battery can be obtained, where Qcurrent is the current estimated capacity, and Qinitial is the initial capacity.

[0044] like figure 1 As shown, the present invention performs data mining and correlation analysis on each characteristic parameter in the charging and discharging process of the battery according to the laboratory test results. As the number of cycles increases, the charge and discharge capacity of the battery gradually decreases, the charge and discharge cycle time decreases to a certain ext...

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Abstract

The invention discloses a power battery health state evaluation method and device, a storage medium and electronic equipment. Battery capacity is selected as the judgment parameter of battery health state. The battery health state evaluation method provided by the invention can be applied to new energy vehicles, energy storage power stations and other application scenes and equipment carrying lithium titanate batteries, and provides real-time battery health state data reference for maintainers and users. The evaluation method can also be applied to a rapid sorting device for echelon utilization of retired batteries, the time cost of battery sorting can be greatly reduced, and accurate data support is provided for subsequent echelon utilization of the batteries. The battery evaluation method has the advantages of rapidity and accuracy, the C / C++ evaluation algorithm software formed by the evaluation method can be applied to embedded equipment and upper computer software, and the rapid evaluation requirement of the lithium titanate battery health state is met.

Description

technical field [0001] The invention belongs to the field of battery performance evaluation, and in particular relates to a power battery health state evaluation method, device, storage medium and electronic equipment. Background technique [0002] In recent years, with the enhancement of people's awareness of environmental protection and my country's strong support for new energy electric vehicles, the central government and local governments have issued a series of favorable subsidy policies, which have led to a rapid growth in the production and sales of new energy vehicles in China, but then The follow-up treatment of decommissioned batteries has gradually become the focus of attention. Power batteries gradually age as the number of charge and discharge cycles increases. Factors that affect aging include service time, environmental conditions, and operating conditions. The condition for decommissioning the battery from the vehicle is mainly to judge the current state of ...

Claims

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Application Information

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IPC IPC(8): G01R31/367G01R31/378
CPCG01R31/367G01R31/378
Inventor 李嘉华姚高亮
Owner ZHUHAI YINLONG ELECTRICAL APPLIANCES
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