Production method of lithium-ion power battery improving battery consistency
A power battery and production method technology, which is applied in the manufacture of battery electrodes, non-aqueous electrolyte batteries, and electrolyte batteries, can solve the problems of non-uniform consistency and differences in battery consistency, so as to improve consistency, prolong service life, Guarantee the effect of safe use
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[0040] Example one
[0041] In the production method of lithium-ion power battery to improve battery consistency, the production of 100 10Ah batteries is taken as an example.
[0042] Among them, in step (3), the positive electrode sheet and the negative electrode sheet are divided into three grades, each of which includes the smallest weight gear, an intermediate weight gear and the largest weight gear. The weight range value corresponding to each grade of the positive electrode: the smallest weight: greater than or equal to 9.01g and less than or equal to 9.19g; the middle weight: greater than or equal to 9.2g and less than or equal to 9.37g; the largest weight: greater than or equal to 9.38g and less than or equal to 9.55g.
[0043] In step (4), the total weight of the positive plates of 100 batteries is controlled respectively. The total number of positive plates in a single battery is specified as 14 pieces, and the total weight range value is: 130±0.5g. In comparison, the to...
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[0054] Example two
[0055] In the production method of lithium-ion power battery to improve battery consistency, the production of 100 20Ah batteries is taken as an example.
[0056] Among them, in step (3), the positive electrode sheet and the negative electrode sheet are divided into three grades, each of which includes the smallest weight gear, an intermediate weight gear and the largest weight gear. The weight range value corresponding to each grade of the positive electrode: the smallest weight: 13.34g and less than or equal to 13.62g; the middle weight: 13.63g and less than or equal to 13.9g; the largest weight: 13.91g and less than or equal to 14.18g.
[0057] In step (4), the total weight of the positive plates of 100 batteries is controlled respectively. The total number of positive plates in a single-cell battery is specified as 19, and the total weight range value is: 261.5±0.5g. In comparison, the total number of positive plates of the single battery produced in the p...
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