Battery package structure and package method thereof

Abstract

The invention discloses a battery package structure and a package method thereof. The battery package structure comprises a housing, the housing is internally provided with a cell holding cavity and an air chamber, the housing is provided with a top package area, a bottom package area, a side package area, a pre-package area and a final package area, the housing is further internally provided withan anti-fake package cavity, and the anti-fake package cavity mutually communicates with the cell holding cavity. The housing is provided with the anti-fake package cavity which can hold part of an electrolyte to reduce the electrolyte between the interlayers of the housing of the battery, prevent the electrolyte in the interlayers of the housing from be extracted out to the final package area inthe battery final package process to influence the package effect of the final package area so as to ensure the final package quality of the battery. At the same time, the electrolyte located in theanti-fake package cavity can replenish the electrolyte inside the battery at any time so as to enhance the service life.

Description

technical field [0001] The invention relates to the technical field of battery packaging structures, in particular to a battery packaging structure and method. Background technique [0002] Lithium-ion batteries mostly use liquid electrolytes, and usually use steel-plastic film or aluminum-plastic film as the outer packaging material for packaging. After the aluminum-plastic film or steel-plastic film is formed, the main body of the battery cell is packaged by heat sealing. [0003] In the existing lithium-ion battery, since the distance from the tab top seal position to the cell body is larger than that from other seals to the cell body, the cavity space between the tab top seal and the cell body is relatively small. Large, and the amount of stored electrolyte is relatively large. When performing pumping and sealing, the air bag is punctured, the cell is in a vacuum state, and the electrolyte will be taken out of the battery along with the air, and you are due to the elect...

AI Technical Summary

Problems solved by technology

When performing pumping and sealing, the air bag is punctured, the cell is in a vacuum state, and the electrolyte will be taken out of the battery along with the air, and you are due to the electrolyte in the cavity from the top sealing position of the tab to the main body of the cell More, it is easier to be taken out to the seal, so that more electrolyte is attached to the steel-plastic film or aluminum-plastic film, resulting in a false seal near the tab position during final sealing, resulting in poor battery products and waste of raw materials

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