Full-tab battery preparation process and full-tab battery

Abstract

The invention provides a full-tab battery preparation process and a full-tab battery. The preparation process of the full-tab battery comprises the following steps: welding positive and negative current collecting plates on a roll core, so that the positive current collecting plate and the negative current collecting plate are respectively welded at two ends of the roll core to form a roll core assembly; the roll core assembly is put into an electrolyte for soaking operation, and a battery core is obtained; after the battery cell is arranged in the battery shell, the battery cell and the battery shell are welded, and a semi-finished battery is formed. As the roll core assembly is soaked, the electrolyte can quickly enter the interior of the roll core, the liquid injection efficiency of the roll core assembly is improved, the roll core can comprehensively and fully absorb the electrolyte, the use amount of the electrolyte actually required by each roll core is further ensured, and the service life of the roll core assembly is prolonged. Therefore, the accuracy of the electrolyte required by the single roll core is improved.

Description

technical field [0001] The invention relates to the technical field of battery manufacturing, in particular to a preparation process of an all-tab battery and an all-tab battery. Background technique [0002] Batteries are ubiquitous in our lives. They mainly convert internal chemical energy into electrical energy, which can provide power for various devices. With the continuous progress of science, batteries are developing in the direction of high power and high rate. Therefore, a new type of all-tab battery has emerged on the market, which makes the all-tab battery have strong overcurrent capability, low heat generation and low internal resistance, so as to better meet the development needs of the market. [0003] In the production process of the all-tab battery, the winding core needs to be injected with liquid, so that the electrolyte can be adsorbed in the winding core, so as to realize the chemical energy conversion inside the all-tab battery. The traditional method ...

AI Technical Summary

Problems solved by technology

[0004] However, with the traditional liquid injection method, since the full tabs are respectively welded to both ends of the core, the connection between the full tab and the two ends of the core is relatively tight, making it difficult for the electrolyte to enter the full tab and the core. The connecting parts at both ends will cause the electrolyte injection time to be too long, and because the weight of each winding core is different, the actual amount of electrolyte required for each winding core will be different. Liquid method, the electrolyte is the same every time, it can not be better adapted to the actual amount of electrolyte required for a single winding core

Especially when there is a big difference in the weight of individual cores when injecting liquid into the cores in batches, it is easy to have insufficient electrolyte in individual cores, thus affecting the product quality of all-tab batteries

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