Rapid screening and grading method of retired battery modules

A battery module and grading method technology, which is applied in the field of decommissioned battery cascade utilization, can solve the problems of long cycle and high cost, and achieve the effects of fast screening, good capacity, and improved screening speed

Inactive Publication Date: 2019-12-10
JIANGSU INST OF INTELLIGENT ENERGY & ENG INNOVATION CO LTD
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AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a method for rapid screening and grading of decommissioned battery modules, which solves the current problem of long cycle and high cost for the screening of decommissioned battery modules that requires multiple tests

Method used

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Embodiment Construction

[0020] Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0021] The present invention provides a technical solution: a rapid screening and grading method for decommissioned battery modules, comprising the following steps:

[0022] S1. Screen the battery module by appearance: observe whether the appearance is intact, whether there is damage, liquid leakage, air leakage, obvious protrusions and dents, etc., the appearance is intact, without damage, liquid leakage, air leakage, obvious protrusions and dents If the above phenomenon occurs, enter the recycling process. The recycling process first discharges the battery, and then performs mechanical crushing to classify different types of substances;

[0023] S2. Carry out charge and discharge tests on the battery module, and record the discharge capacity, the maximum st...

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Abstract

The invention discloses a rapid screening and grading method of retired battery modules. The method includes the following steps of screening the battery modules according to the appearance, conducting charging and discharging testing on the battery modules, grading the qualified batteries in discharging testing, and recombining the graded battery modules according to the combining requirements for cascade utilization. Only by means of the appearance detecting and capacity testing project, the aim of screening and grading the retired battery modules is realized, the screening speed is increased, the screening cost is reduced, and the rapid screening aim is realized. By grading the screened battery modules, it is shown that the higher the grade of one module is, the better the quality of the battery module is. During the cascade utilization for an energy storage system, the battery modules of the same grade are connected in series for utilization, the buckets effect is easily avoided, and the capacity of the battery modules is brought into better play.

Description

technical field [0001] The invention relates to the technical field of cascade utilization of decommissioned batteries, in particular to a rapid screening and grading method for decommissioned battery modules. Background technique [0002] Lithium-ion power batteries have the advantages of high energy density, high working voltage, high safety and long life, and are the main source of power for electric vehicles. In recent years, due to policy support, electric vehicles have shown explosive growth, and will be decommissioned in large quantities in the future For waste lithium-ion batteries with a remaining capacity of 70-80%, if the decommissioned batteries are directly scrapped, it will not only cause a great waste of resources, but also cause great harm to the environment. If the decommissioned batteries are sorted and used in stages The energy storage system not only reduces the waste of resources and environmental pollution, but also can generate certain economic value a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B07C5/34B07C5/344H01M10/54
CPCB07C5/34B07C5/344H01M10/54Y02W30/84
Inventor 司静杨帆裴浩曹杰
Owner JIANGSU INST OF INTELLIGENT ENERGY & ENG INNOVATION CO LTD
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