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Lithium battery echelon utilization screening method

A screening method, lithium battery technology, applied in battery recycling, recycling technology, recycling by waste collectors, etc., can solve problems such as some failures, single lithium battery screening, etc., to improve reliability and facilitate cascade utilization and group use , the effect of improving the utilization rate

Pending Publication Date: 2021-07-16
CHERY COMML VEHICLE ANHUI
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Problems solved by technology

The recycling of lithium batteries in the prior art generally includes cell level, module level, and package level, that is, the decommissioned battery packs are tested and disassembled to provide them in the form of battery packs, cells, and modules. Recycling, so how to screen out lithium batteries that can be used in cascades is very important for industrial development. In the prior art, the screening of lithium batteries is relatively simple and single. Generally, it is judged by capacity, and some failures will occur in cascade recycling. Therefore This application provides a screening method for cascade utilization of lithium batteries that can take into account the screening cost and the diversity of cascade utilization applications

Method used

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  • Lithium battery echelon utilization screening method

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Embodiment Construction

[0025] The specific implementation manner of the present invention will be described in further detail below by describing the best embodiment with reference to the accompanying drawings.

[0026] This application only adopts one screening method of capacity for the cascade utilization screening of the prior art, which causes the screened battery modules to be easily faulty, and the screened battery modules are unqualified, which will cause the subsequent cascade utilization to fail to meet the requirements. Provide A screening method for cascaded utilization of lithium batteries is used to realize module-level screening. The specific plan is as follows:

[0027] Such as figure 1 As shown, a lithium battery cascade utilization screening method includes:

[0028] Step 1: Disassemble the decommissioned battery pack and disassemble it into battery modules; this application uses module-level screening, which takes into account the usage scenarios and scope of application. If the...

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Abstract

The invention discloses a lithium battery echelon utilization screening method, which comprises the following steps: step 1, disassembling retired battery packs into battery modules; step 2, preliminarily screening the battery modules, and screening and rejecting the battery modules of which the appearances and chemical properties do not meet the requirements; step 3, balancing the modules screened out in the step 2, then carrying out capacity detection, and rejecting the battery modules which do not meet the capacity requirement; and step 4, presetting a module capacity interval for the battery modules screened in the step 3, and taking the battery modules in the same capacity interval as battery packs which can be utilized in an echelon manner at the same gear.

Description

technical field [0001] The invention relates to the field of battery recycling, in particular to a screening method for cascade utilization of lithium batteries. Background technique [0002] With the rapid development of the new energy vehicle industry, the five-year warranty is about to expire, and the power battery will also usher in a "wave of scrapping". About 780,000 tons (about 116GWh), of which, about 550,000 tons (accounting for 70% of the total decommissioned volume) of decommissioned power batteries can enter the cascade utilization link, and the huge decommissioned volume also makes the power battery recycling become the current industry in the process of moving forward Problems to be solved. The recycling of lithium batteries in the prior art generally includes cell level, module level, and package level, that is, the decommissioned battery packs are tested and disassembled to provide them in the form of battery packs, cells, and modules. Recycling, so how to ...

Claims

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Application Information

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IPC IPC(8): B07C5/34B07C5/344H01M10/54
CPCB07C5/34B07C5/344H01M10/54Y02W30/84
Inventor 蔡宝来张寓李飞
Owner CHERY COMML VEHICLE ANHUI
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