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Method for sorting and matching power batteries

A matching method and power battery technology, applied in secondary batteries, secondary battery repair/maintenance, circuits, etc., can solve the problems of poor battery consistency, low battery ratio, high cost of battery sorting and matching, and improve the pass rate. , the effect of good consistency

Inactive Publication Date: 2017-05-31
天津宝坻紫荆创新研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process is relatively complicated, the ratio of qualified batteries is low, and the cost of battery sorting and matching is high. With the use of batteries, the consistency of batteries is getting worse

Method used

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Examples

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Embodiment Construction

[0027] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0028] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying the Means that a device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood as indicating or implying relative importance or implicitly specifying the quantity of the in...

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Abstract

The invention provides a method for sorting and matching power batteries. The method comprises the following steps of (1) detecting and recording self-discharging rates of the batteries, and classifying the batteries according to the self-discharging rates of the batteries; (2) selecting the batteries with the same self-discharging rate; (3) detecting the internal resistance, capacity and open-loop voltage of the same class of batteries selected in step (2), recording, and grouping the class of batteries according to the similarity of internal resistance of batteries and similarity of open-loop voltage; (4) matching the batteries in the group according to the capacity supplementing principle, so as to enable the capacity sum of batteries of each parallel module to be similar; (5) serially connecting the parallel modules, so as to form a battery pack. The method for sorting and matching the power batteries has the advantages that the sorted rate of the batteries is increased, and the service life of the battery is prolonged.

Description

technical field [0001] The invention belongs to the technical field of batteries, and in particular relates to a method for sorting and matching power batteries. Background technique [0002] With the rapid development of electric vehicles, there are many problems, among which the problems of power batteries are the most. The marked value of capacity and energy of the power battery system is quite different from the actual situation. The main reason is that the marked value of the capacity and energy of the power battery system is calculated based on the value of the single battery. The values ​​differ greatly. How to match the single battery determines whether the battery system can realize the full potential of the battery. There are two main methods for sorting and matching existing power batteries, one is capacity sorting and matching, and the other is multi-parameter sorting and matching. Batteries are sorted and matched according to capacity, the process is relative...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42B07C5/34B07C5/344
CPCB07C5/3412B07C5/344H01M10/4207H01M10/425H01M2010/4271Y02E60/10
Inventor 周虎易汉平韩永明管鸿运
Owner 天津宝坻紫荆创新研究院