A sorting method, system and device for decommissioned batteries

A battery and sorting technology, applied in the direction of measuring device, measuring electricity, measuring electrical variables, etc., can solve the problems of high cost, long time, low efficiency of battery sorting, etc., and achieve the effect of improving speed

Active Publication Date: 2021-06-04
GUANGZHOU HKUST FOK YING TUNG RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method takes a long time. In order to increase the number of selected cells, a large number of instruments need to be operated at the same time. The cost is high and the efficiency of battery sorting is low.

Method used

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  • A sorting method, system and device for decommissioned batteries
  • A sorting method, system and device for decommissioned batteries

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Embodiment Construction

[0049] The present invention will be further explained and described below in conjunction with the accompanying drawings and specific embodiments of the description. For the step numbers in the embodiment of the present invention, it is only set for the convenience of explanation and description, and there is no limitation on the order of the steps. The execution order of each step in the embodiment can be carried out according to the understanding of those skilled in the art Adaptive adjustment.

[0050] refer to figure 1 , the present invention is a sorting method for decommissioned batteries, comprising the following steps:

[0051] Measure the first open circuit voltage and AC internal resistance of the battery;

[0052] calculating the first remaining capacity of the battery according to the measured first open circuit voltage;

[0053] Charging or discharging the battery according to the calculated first remaining power;

[0054] Measuring the second open-circuit vol...

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Abstract

The invention discloses a method, system and device for sorting decommissioned batteries. The method includes: measuring the first open circuit voltage and AC internal resistance of the battery; calculating the first remaining power of the battery according to the measured first open circuit voltage; Calculate the first remaining power, charge or discharge the battery; measure the second open circuit voltage of the battery after charging or discharging, and calculate the second remaining power of the battery; according to the charging and discharging capacity of the battery, calculate the first The remaining power and the second remaining power are used to calculate the remaining available capacity of the battery; to obtain the turning point voltage of the battery charge and discharge curve; to group the batteries according to the remaining available capacity, AC internal resistance, and turning point voltage of the battery. The battery sorting of the invention has high speed, low cost and high efficiency. As a sorting method, system and device for decommissioned batteries, the invention can be widely used in the technical field of battery measurement.

Description

technical field [0001] The invention relates to the technical field of battery measurement, in particular to a sorting method, system and device for decommissioned batteries. Background technique [0002] In recent years, the number of electric vehicles in my country has grown exponentially. The battery life of electric vehicles is about 5 to 8 years. When electric vehicle batteries are decommissioned, some of the batteries can no longer be used and need to be disassembled into battery materials, while a considerable number of batteries can be reused before disassembly. [0003] In order to screen out these batteries that can be reused, the traditional method performs capacity calibration and internal resistance calibration on the battery through slow charging and discharging, so as to screen out batteries with better consistency. This method takes a long time. In order to increase the number of sorting cells, a large number of instruments need to be operated at the same t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/388
CPCG01R31/367
Inventor 唐晓鹏贺振伟姚科夏永晓胡文贵高福荣
Owner GUANGZHOU HKUST FOK YING TUNG RES INST
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