Formation method for improving capacity consistency of a waste hard-shell power lithium battery

A chemical synthesis method and lithium battery technology, applied in secondary batteries, battery recycling, electrochemical generators, etc., can solve problems such as poor consistency, reduced consistency, and impact on utilization, to eliminate false electronic fatigue, The effect of improving the activity of the electronic surface layer and improving the capacity consistency

Active Publication Date: 2017-08-11
杜文龙
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Problems solved by technology

The application of energy storage to lithium batteries is also used on a large scale, that is, when they are used, many are only used together. It is also the same as the use of lithium batteries in new energy vehicles, facing the problem of matching and consistency. Therefore, power lithium batteries Consistency is a very important issue for secondary utilization. If the consistency is not good, if you cannot match groups, the utilization rate will be e

Method used

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Embodiment Construction

[0031] A kind of formation method of the present invention improves the capacity consistency of old hard case power lithium battery, it comprises the following steps:

[0032] (1), battery is screened, it comprises the following steps:

[0033] (a) After receiving the battery pack, first observe the appearance of the battery pack. When the appearance of the battery pack has physical damage, the battery pack will be eliminated. scratches or damage that causes appearance deformation; when the appearance of the battery pack has no physical damage, then the battery pack is subjected to step (b);

[0034] (b) Measure the capacity of the battery pack, and if the capacity of the battery pack is less than 50% of its rated battery capacity, the battery pack is eliminated, and if the capacity of the battery pack is higher than 50% of its rated battery pack capacity, then The battery pack performs step (c) while recording the capacity ratio of the battery pack;

[0035] (c) Disassemble...

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Abstract

The invention relates to a formation method for improving capacity consistency of a waste hard-shell power lithium battery. The formation method comprises the steps of screening the battery, performing formation on the capacity consistency of a single battery, and finally, measuring and recording capacity, voltage and internal resistance performance of the single battery for use. By the formation method for improving the capacity consistency of the waste hard-shell power lithium battery, the battery activity cannot be fundamentally restored or improved, false fatigue of an electron is eliminated only by a special formation process, the activity of an electron surface layer is improved, and the real performance of the electron and a battery cell is restored; the method is initial at home and abroad; the index consistency of the single battery processed by the method is improved to 85% from 40% and is in an advance level in industry; and by the technology, the capacity consistency of the water power lithium battery is greatly improved, and the grouping rate and the application rate during secondary usage can be nearly doubled.

Description

technical field [0001] The invention relates to the reuse of old batteries, in particular to a method for reusing old hard-shell power lithium batteries used in new energy vehicles, that is, a formation method for improving the capacity consistency of old hard-shell power lithium batteries. Background technique [0002] Power lithium batteries refer to lithium-ion batteries for new energy vehicles (currently only referring to new energy vehicles announced by the Ministry of Industry and Information Technology). Generally, the monomers are relatively large. Except for a few cylindrical lithium batteries, they are basically above 10 ampere hours. There are 500 amp-hour monomers. Good magnification and good discharge are required, and both specific energy and energy density are required to save the weight and volume of new energy vehicles. In particular, such lithium batteries are required to have good consistency in terms of capacity, voltage, internal resistance and discharg...

Claims

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Application Information

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IPC IPC(8): H01M10/54H01M10/44
CPCH01M10/441H01M10/54Y02E60/10Y02W30/84
Inventor 杜文龙
Owner 杜文龙
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