Production method of lithium-ion power battery improving battery consistency
一种动力电池、生产方法的技术,应用在电池电极、非水电解质蓄电池、电解质蓄电池制造等方向,能够解决一致性不是一致性、电池一致性差异等问题,达到提高一致性、延长使用寿命、保证安全使用的效果
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Embodiment 1
[0041] In the production method of the lithium-ion power battery that improves battery consistency, take the production of 100 10Ah batteries as an example.
[0042] Wherein, in step (3), the positive electrode sheet and the negative electrode sheet are divided into three grades, each including a minimum weight grade, an intermediate weight grade and a maximum weight grade. The weight range value corresponding to each grade of the positive plate: the smallest weight range: greater than or equal to 9.01g and less than or equal to 9.19g; the middle weight range: greater than or equal to 9.2g and less than or equal to 9.37g; the largest weight range: greater than or equal to 9.38g and less than or equal 9.55g.
[0043] In step (4), the total weight of the positive plates of 100 batteries is controlled respectively. The total number of positive electrodes in a single battery is 14, and the total weight range is 130±0.5g. In comparison, the total number of positive pole sheets of...
Embodiment 2
[0055] In the production method of the lithium-ion power battery that improves battery consistency, take the production of 100 20Ah batteries as an example.
[0056] Wherein, in step (3), the positive electrode sheet and the negative electrode sheet are divided into three grades, each including a minimum weight grade, an intermediate weight grade and a maximum weight grade. The weight range value corresponding to each grade of the positive plate: the smallest weight grade: greater than or equal to 13.34g and less than or equal to 13.62g; the middle weight grade: greater than or equal to 13.63g and less than or equal to 13.9g; 14.18g.
[0057] In step (4), the total weight of the positive plates of 100 batteries is controlled respectively. The total number of positive electrodes in a single battery is 19, and the total weight range is 261.5±0.5g. In comparison, the total number of positive pole sheets of the single battery produced in the prior art is the same as that of the ...
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