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Data chart generation method and battery pack maintenance method

A data chart, battery pack technology, applied in the field of lithium-ion batteries, can solve the problems of inaccurate balancing strategy and poor maintenance effect

Inactive Publication Date: 2019-08-09
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on this, it is necessary to provide a method for generating data graphs and battery packs for the problems of non-linear changes in the terminal voltage and state of charge of lithium-ion battery cells in traditional solutions, resulting in inaccurate equalization strategies and poor maintenance effects. Maintenance method

Method used

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  • Data chart generation method and battery pack maintenance method
  • Data chart generation method and battery pack maintenance method
  • Data chart generation method and battery pack maintenance method

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Embodiment Construction

[0035] In order to make the purpose, technical solution and advantages of the present application clearer, the present application 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 used to explain the present application, and are not intended to limit the present application.

[0036] The present application provides a data chart generation method and a battery pack maintenance method.

[0037] It should be noted that the data chart generation method and the battery pack maintenance method provided in this application do not limit their application fields and application scenarios. Optionally, the data chart generation method and battery pack maintenance method are applied to lithium-ion battery packs.

[0038] The present application provides a method for generating data graphs. The method for generating data graphs provided in this applicatio...

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PUM

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Abstract

The invention relates to a data chart generation method and a battery pack maintenance method. The data chart generation method comprises the steps: after a to-be-tested battery pack is subjected to acharge-discharge cycle, battery data of all to-be-tested battery single bodies are obtained, the rated capacity and the dischargeable amount of all the to-be-tested battery single bodies are calculated based on the battery data, and thus a relational graph of the rated capacity and the dischargeable amount is constructed. Further, the graph of the rated capacity and the dischargeable amount has aguiding effect on battery pack maintenance, the nonlinear problem based on the terminal voltage and electrical charge state balance is avoided, the minimum battery single body capacity in the lithium-ion battery pack is fully utilized, and thus the purpose of battery pack maintenance is achieved.

Description

technical field [0001] The present application relates to the technical field of lithium-ion batteries, in particular to a method for generating a data graph and a method for maintaining and maintaining a battery pack. Background technique [0002] The power battery is the core source of power for pure electric vehicles. Based on the comprehensive consideration of the power, mileage, safety and cost of pure electric vehicles, currently pure electric vehicles generally use lithium-ion batteries as power batteries. A lithium-ion battery is a rechargeable battery that primarily relies on the movement of lithium ions between the positive and negative electrodes to function. Lithium-ion batteries have the advantages of low self-charging rate, wide working range (can work in the temperature range of -25°C to 50°C), no memory effect, environmental friendliness and long life, etc., and gradually become the vehicle power battery for pure electric vehicles mainstream. Limited by th...

Claims

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Application Information

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IPC IPC(8): G01R31/367G01R31/396G01R31/378G01R31/388H01M10/42H01M10/48
CPCG01R31/367G01R31/396G01R31/378G01R31/388G01R31/006H01M10/42H01M10/48Y02E60/10H02J7/0048H02J7/0013H02J7/0016
Inventor 郭东旭冯旭宁郑岳久韩雪冰卢兰光欧阳明高何向明杨耕
Owner TSINGHUA UNIV
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