Novel lithium-ion polymer battery and packaging process thereof

Abstract

The invention discloses a novel lithium-ion polymer battery and its packaging process, comprising a metal lower case, a metal upper case, and a polymer cell assembly. The metal upper case is provided with several glue injection ports; The polymer cell assembly described above includes a polymer cell, a protective plate, a front cover, and a rear cover, and the rear cover is connected to one end of the metal upper casing; the tab end of the polymer cell is welded with a protective plate; the front cover covers Set on the protective plate; the other end of the polymer cell is connected to the back cover; the metal upper shell and the metal lower shell are set on the upper and lower composite shells of the polymer cell assembly; the back cover is located at the tail end of the shell The front cover is located at the front end of the shell; the gap between the front cover and the back cover and the polymer battery cell, the metal upper case and the metal lower case is provided with filling glue; the present invention effectively protects the safety performance of the battery and the same space While maximizing the battery capacity, semi-automatic production is realized to improve production efficiency and yield.

Description

technical field [0001] The invention relates to the field of lithium ion batteries, in particular to a novel lithium ion polymer battery and its packaging process. Background technique [0002] In the mobile digital equipment industry, with the advent of the intelligent age, there are higher requirements for the safety performance and capacity of batteries, and lithium-ion polymer batteries are being used more and more due to their high capacity and good safety performance. [0003] At present, the commonly used lithium-ion polymer batteries are composed of box-shaped shells and batteries, and the commonly used polymer batteries are packaged in two ways: one uses a plastic frame to cover the batteries, and the upper and lower sides of the batteries Add steel sheets and then carry out low-pressure injection molding packaging. This traditional plastic casing packaging method is limited by injection molding conditions and takes up a lot of space. At the same time, because the s...

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used lithium-ion polymer batteries are composed of box-shaped shells and batteries, and the commonly used polymer batteries are packaged in two ways: one uses a plastic frame to cover the batteries, and the upper and lower sides of the batteries Add steel sheets and then carry out low-pressure injection molding packaging. This traditional plastic casing packaging method is limited by injection molding conditions and takes up a lot of space. At the same time, because the surrounding is a plastic casing, the overall rigidity of the battery is insufficient and the impact resistance is weak; The second is to use a box-shaped metal shell to cover the battery core and then encapsulate it by low-pressure injection molding. The overall rigidity and impact resistance of this packaged battery are sufficient, but the production process is complicated, the manual work is heavy, the production cycle is long, and the defect rate is high.

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