A method for sorting and matching lithium-ion batteries

A lithium-ion battery, matching technology, applied in secondary batteries, secondary battery testing, secondary battery repair/maintenance, etc. The effect of the service life and the simple combination method

Active Publication Date: 2016-06-29
DONGGUAN ADF BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a method for sorting and matching lithium-ion batteries, aiming to solve the problems of complicated and high-cost battery sorting processes in the prior art

Method used

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  • A method for sorting and matching lithium-ion batteries
  • A method for sorting and matching lithium-ion batteries
  • A method for sorting and matching lithium-ion batteries

Examples

Experimental program
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Embodiment Construction

[0030] like figure 1 As shown, the method for sorting and assembling lithium ion batteries of the present invention mainly includes the following steps:

[0031] 1) Coding or numbering of each single battery in the same batch;

[0032] 2) Divide the capacity of the single battery after coding or numbering, select the single battery whose charge is 0% to 80%, measure and record the first voltage V of the above single battery 1 , internal resistance R 1 and capacity C 1 ;

[0033] 3) Put the above single cells into the aging device, and age them at a temperature of 25°C to 80°C for 4 hours to 30 days. After the aging is completed, collect the secondary voltage V of the aged single cells. 2 , internal resistance R 2 and recovery capacity C 2 , while at the same time according to the recovery capacity C 2 Establish a grading standard for recovery capacity, and at the same time grading the recovery capacity of each single battery;

[0034] 3) Calculate the voltage change va...

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Abstract

The invention relates to the technical field of lithium ion battery manufacturing, and particularly relates to a sorting and grouping method for lithium ion batteries. The sorting and grouping method is widely applied to sorting and grouping of battery packs of various types of electronic and electrical equipment such as small digital electrical appliances, electric bicycles and electric automobiles. The sorting and grouping method comprises the following steps: firstly, spraying codes on or numbering single batteries, and collecting first capacity, voltage and internal resistance of the single batteries; and aging the single batteries, collecting second voltage, internal resistance and recovery capacity of the single batteries, carrying out data statistics on grouping factors, establishing the grading standard of each grouping factor of the single batteries, determining the level of each grouping factor of each single battery, and selecting the grouping factors according to practical conditions to carry out sorting and grouping. The sorting process is simple, the requirement on sorting equipment is simple, and thus the sorting and grouping cost is reduced; the method has the function of preferably selecting battery packs with long service life, unqualified battery cores can be eliminated, and thus undesirable effects of produced battery packs can be reduced.

Description

technical field [0001] The invention relates to the technical field of lithium ion battery manufacturing, in particular to a method for sorting and assembling lithium ion batteries, which is widely used in the sorting and assembling of batteries of various electronic and electrical equipment such as small digital appliances, electric bicycles, and electric vehicles. . Background technique [0002] As a new type of energy storage device, lithium-ion battery has attracted more and more attention due to its advantages of high specific energy, high specific power, high operating voltage, low self-discharge, good cycle performance and environmentally friendly manufacturing. . At present, in the lithium-ion battery production industry, it is common for the charge-discharge performance, cycle life and safety performance of single-cell lithium-ion batteries to meet industry, national and international industry technical standards. However, once multiple single-cell batteries are co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/42G01R31/36
CPCH01M10/4221H01M10/4285Y02E60/10
Inventor 谭春华林鸿鹏
Owner DONGGUAN ADF BATTERY
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