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Battery grouping method and device, electronic equipment and computer readable storage medium

A battery and grouping technology, which is applied in the direction of measuring devices, measuring electricity, and measuring electrical variables, etc., can solve problems such as low efficiency of grouping, low yield rate of grouping, and difficulty in ensuring the consistency of battery dynamic charge and discharge, etc., to reduce costs , the effect of improving efficiency

Pending Publication Date: 2022-01-04
ZHUHAI COSMX POWER CO LTD
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Problems solved by technology

[0004] The present invention aims to solve the problem that the battery matching method in the prior art is difficult to ensure the consistency of battery dynamic charge and discharge, and at least one aspect of the resulting low matching efficiency and low matching yield

Method used

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  • Battery grouping method and device, electronic equipment and computer readable storage medium
  • Battery grouping method and device, electronic equipment and computer readable storage medium
  • Battery grouping method and device, electronic equipment and computer readable storage medium

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Embodiment Construction

[0035] At present, the main way of lithium-ion battery matching is through the combination of static single parameters / multi-parameters such as battery capacity, voltage, internal resistance, and self-discharge. consistency. However, this method can only represent a certain indicator of the battery under static conditions, and cannot evaluate the differences in the actual use of the battery, which has certain limitations. For example, these parameters can only be selected and grouped using the value of a certain test state. If the test state is in the plateau, it cannot effectively reflect the consistency of the cell at the end of charge and discharge, that is, it cannot effectively reflect the voltage difference and performance of the module at the end of charge and discharge; if the test is performed when the state of charge is very high or very low , the sigma of the data obtained from the test is very large, there will be many bins, many matching groups, and the yield rate...

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Abstract

The invention provides a battery grouping method and device, electronic equipment and a computer readable storage medium. The battery grouping method comprises the following steps: acquiring electrical data of n battery cells to be grouped; acquiring m electric quantity reference values; based on the electrical data of the n battery cells, calculating the voltage value of each battery cell under the m electric quantity reference values to obtain n electric quantity voltage mapping data; determining m voltage reference values, and determining m voltage threshold values; making difference on m voltage values contained in the n electric quantity voltage mapping data and the m voltage reference values respectively, and obtaining absolute values of n groups of voltage differences; and classifying all the n battery cells with the absolute values smaller than the corresponding m voltage threshold values into one group. According to the invention, the to-be-grouped battery cells can be quickly and effectively grouped, the grouping efficiency and the grouping yield are improved, and the grouping cost is reduced.

Description

technical field [0001] The present invention relates to the technical field of batteries, in particular, to a battery assembly method, device, electronic equipment, and computer-readable storage medium. Background technique [0002] The large-scale application of lithium-ion batteries in new energy vehicles, smart grids and other fields is increasing year by year. Unlike the application in portable energy storage products (mainly single cells or small modules), lithium-ion batteries for power need The energy storage system or battery pack composed of several lithium-ion batteries combined in series and parallel is loaded on the car. The inconsistency of battery parameters is a key factor affecting the service life of the battery system. Similar to the "barrel" short-board effect, the performance of the entire system depends on the "weakest battery cell or module", although the existence of battery thermal management and the improvement of the technical level guarantee the b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
CPCG01R31/36
Inventor 任水华张志国段鹏杨雪松
Owner ZHUHAI COSMX POWER CO LTD
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