Battery grouping method

A battery and discharge curve technology, applied in the field of battery applications, can solve the problem of inability to match batteries, avoid errors and calculation errors, improve the matching rate, and the method is simple and effective.

Active Publication Date: 2015-02-04
中创新航科技(江苏)有限公司
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Problems solved by technology

[0005] The purpose of the present invention is to provide a battery matching metho...

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0028] The present invention provides a battery assembly method, the steps are as follows:

[0029] 1) Discharge the batteries to be matched according to the set rate, and obtain the discharge curve of the voltage change.

[0030] 2) Select the voltage platform of each battery in the battery to be assembled, and calculate the average value of the voltage platform.

[0031] 3) Calculate the difference or quotient between the voltage platform of each battery and the average value as a comparison value.

[0032] 4), Arrange the comparison values ​​in ascending or descending order; perform subtraction or division operations on two adjacent comparison values ​​in turn, and record it as the deviation value. When the absolute value of the deviation value is greater than the first set differential pressure factor or less than the second set When the pressure differ...

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Abstract

The invention relates to a battery grouping method. The method comprises the following steps: (1) discharging batteries to be grouped according to a preset multiple ratio so as to obtain a discharge curve of voltage changing; (2) selecting the voltage platform of each battery to be grouped, and calculating the average value of the voltage platform; (3) calculating the differences or quotients between each voltage platform value and the average value, and taking the calculated differences or quotients as the comparative values; (4) sequencing the comparative values from large to small or otherwise, individually carrying out subtraction calculation or division calculation on two neighbored comparative values, taking the calculation results as the deviation values, and when the absolute value of a deviation value is larger than a first preset differential voltage factor or less than a second present differential voltage factor, dividing the two batteries corresponding to the two neighbored comparative values into different groups.

Description

technical field [0001] The invention relates to a battery assembly method, which belongs to the field of battery application. Background technique [0002] In recent years, the application of series-parallel battery packs in electric vehicles, wind-solar energy storage, and emergency power supplies for communication base stations has been continuously promoted. The consistency of batteries connected in series and parallel is an important index to measure the performance of the battery pack, which is directly related to the cycle life and safety performance of the battery pack. [0003] Due to the influence of various factors in the production process of the battery, there are certain differences in the single battery itself. This difference is usually manifested as the difference in characteristics such as capacity, internal resistance, self-discharge rate, voltage platform, charge-discharge curve, etc., namely for inconsistencies between cells. The method of battery match...

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Application Information

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IPC IPC(8): H01M10/42B07C5/34
CPCB07C5/344
Inventor 王东梅李灵玥朱肃然
Owner 中创新航科技(江苏)有限公司
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