Method for manufacturing lithium battery through echelon utilization and manufactured lithium battery
A lithium battery and waste lithium battery technology, applied in secondary batteries, secondary battery repair/maintenance, battery recycling, etc., can solve the problems of increasing the cost of the whole vehicle, environmental pollution, waste of resources, etc., to achieve a small space ratio, The effect of many cycles and low self-discharge rate
Pending Publication Date: 2021-11-12
CHERY COMML VEHICLE ANHUI
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Problems solved by technology
According to the national standard for the use of electric vehicle batteries, when the capacity of lithium-ion batteries declines to 80% of the original capacity, it is no longer suitable to continue to be used in electric vehicles, which increases the cost of the vehicle; lithium batteries for electric vehicles contain lithium metal materials and electrolytic If the waste lithium battery cannot be effectively recycled, it will not only cause a waste of resources, but also cause serious environmental pollution.
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[0026] Referring to the accompanying drawings, through the description of the embodiments, the specific embodiments of the present invention include the shape, structure, mutual position and connection relationship of each part, the function and working principle of each part, and the manufacturing process of the various components involved. And the method of operation and use, etc., are described in further detail to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention.
[0027] The present invention screens out the available decommissioned battery cells from waste lithium batteries, and manufactures them into 12V lithium batteries, which reduces the curb quality and saves the layout space of the whole vehicle. At the same time, it can also save the cost of the whole vehicle, reduce environmental pollution, and reuse the decommissioned batteries.
[0028] By dismantli...
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The invention discloses a method for manufacturing a lithium battery through echelon utilization, wherein the method comprises the following steps: step 1, disassembling a waste lithium battery to obtain a plurality of strings of battery cells; step 2, measuring all the battery cells, and selecting the battery cells with the available capacity greater than or equal to 70%; step 3, carrying out HPPC test on the selected battery cells, and selecting the battery cells with DCR greater than or equal to 4.5 m[Ohm] and ACR greater than or equal to 2.5 m[Ohm]; step 4, matching the obtained battery cells to prepare a battery pack with the battery capacity greater than or equal to 42 Ah; step 5, detecting the battery pack; and step 6, selecting the qualified battery pack for echelon utilization to manufacture the lithium battery. According to the method, available retired battery cells are screened out and manufactured into 12 V lithium batteries, so that the curb mass is reduced, and the arrangement space of the whole vehicle is saved. And meanwhile, the cost of the whole vehicle can be saved, the environmental pollution is reduced, and the retired battery cells are reutilized.
Description
technical field [0001] The invention relates to the field of power batteries for new energy pure electric vehicles, in particular to the field of step-by-step utilization of power batteries for electric vehicles and the popularization and application of 12V lithium batteries. Background technique [0002] With the gradual industrialization of electric vehicles, the output of lithium batteries for electric vehicles will increase significantly, and the ensuing question is how to recycle and dispose of the eliminated lithium batteries. According to the national standard for the use of electric vehicle batteries, when the capacity of lithium-ion batteries declines to 80% of the original capacity, it is no longer suitable to continue to be used in electric vehicles, which increases the cost of the vehicle; lithium batteries for electric vehicles contain lithium metal materials and electrolytic If the waste lithium battery cannot be effectively recycled, it will not only cause a w...
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IPC IPC(8): G01R31/396G01R31/389G01R31/387H01M10/0525H01M10/42H01M10/54
CPCG01R31/396G01R31/389G01R31/387H01M10/54H01M10/4207H01M10/0525Y02W30/84Y02E60/10
Inventor 朱群山赵国华朱广燕刘帅楠刘清巷刘胖
Owner CHERY COMML VEHICLE ANHUI