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Combination and matching method, system and device of battery pack with different capacities and storage medium

A battery pack and assembly technology, applied in measuring devices, secondary battery repair/maintenance, measuring electricity, etc., can solve problems such as insufficient cycle life, and achieve the goal of improving service life, maintaining parameter consistency, and improving utilization. Effect

Active Publication Date: 2019-06-07
湖北鹏程新锐科技发展有限公司
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Problems solved by technology

The simplest configuration is a single-parameter configuration, which only considers the rated capacity, which is the case for the early configuration, but the single-parameter configuration, the battery pack made of a single power battery with a cycle life of 1500 cycles, the cycle life is less than 1 / 10 of the monomer

Method used

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  • Combination and matching method, system and device of battery pack with different capacities and storage medium
  • Combination and matching method, system and device of battery pack with different capacities and storage medium
  • Combination and matching method, system and device of battery pack with different capacities and storage medium

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Embodiment Construction

[0051] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0052] Such as figure 1 As shown, a method for assembling a non-equal-capacity battery pack includes the following steps:

[0053] Step 1: Obtain the battery capacities of multiple batteries to be assembled respectively, and classify the multiple batteries to be assembled according to the battery capacities;

[0054] Step 2: Conduct charge and discharge tests on the batteries to be assembled belonging to the same category, and obtain the charge and discharge curves of the batteries to be assembled belonging to the same category;

[0055] Step 3: According to the charge-discharge curve, analyze the change law of the charge-discharge voltage variation with the charge-discharge time of the batteries to be assembled be...

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Abstract

The present invention relates to a combination and matching method, system and device of a battery pack with different capacities and a storage medium. The method comprises the steps of: obtaining battery capacities of a plurality of batteries to be combined and matched for classification; obtaining a charge-discharge curve of batteries to be combined and matched belonging to the same class; rejecting the batteries to be combined and matched which do not meet preset conditions according to the charge-discharge curve; performing aging test for the rest of the batteries to be combined and matched belonging to the same class, detecting the internal resistance change rates of the batteries to be combined and matched belonging to the same class before and after aging, and selecting the target number of the batteries from the rest of the batteries to be combined and assembled belonging to the same class as final combination and matching according to the internal resistance change rates. Thecombination and matching method, system and device of the battery pack with different capacities and the storage medium greatly optimize the combination and matching mode of batteries, maintain the consistency of parameters of the batteries belonging to the same class as possible, avoid that the poor parameters of a separated battery influence the practicability and the safety of the life of the whole battery pack, greatly improve the service life of the battery pack and ensure the whole performances of the battery pack.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a method, system, storage medium and device for assembling non-constant-capacity battery packs. Background technique [0002] With the development of new energy, the widespread application of power batteries has been greatly promoted. As a chemical energy storage device, batteries have received great investment in research and development and industry. For power batteries in electric vehicles, the focus is on safety, reliability and life. The research on the single power battery in the early stage has been relatively perfect, and the service life theoretically meets the requirements of electric vehicles. There is no serious problem in safety, and the operating economy is gradually approaching the level accepted by the market. However, what is used in electric vehicles is grouped technology, and the progress of grouped technology will affect the progress of the entire electric ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42B07C5/344G01R31/389G01R31/388G01R31/392G01R31/396
CPCY02E60/10
Inventor 周鹏陈鹏
Owner 湖北鹏程新锐科技发展有限公司
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