Device and method for vacuumizing in membrane of soft packaged battery

Abstract

The invention relates to the technical field of battery packaging, and discloses a device for vacuumizing in a membrane of a soft packaged battery. The device comprises a fixed frame, and a positioning table for holding the battery and a vacuum clamping mechanism for vacuuming are arranged on the fixed frame. When the vacuumizing device works, vacuum extraction is only carried out near an extracting hole of a gas bag, then gas or liquid is extracted from the gas bag, and finally, a heat sealing mechanism performs heat sealing on the extracting hole after the extraction. The device is simple in structure and easy to use. According to a vacuumizing method with the vacuumizing device, the whole battery does not need to be arranged inside a vacuum chamber, and gas or liquid in the gas bag can be extracted rapidly after the gas bag is closely attached to an annular upper sucker and an annular lower sucker. Therefore, the cost time is relatively short, the working efficiency is relatively improved, and energy can be effectively saved.

Description

technical field [0001] The invention relates to the technical field of battery packaging, in particular to an in-membrane vacuum extraction device and method for a pouch battery. Background technique [0002] Soft-pack batteries, also known as polymer batteries, have many advantages such as small size, light weight, high safety, and flexible design; they are especially suitable for portable electronic devices. The plastic film punching pit is used to accommodate the battery cell, and then the battery cell is packaged, liquid injected, and cut. In the above process, it involves the problem of sealing after formation or sealing before formation. Some waste gas or waste liquid will be produced, such as HF, CO, NO, etc., which will cause the battery to bulge and be difficult to seal, seriously affecting the performance and yield of the battery. However, the vacuuming of the prior art is to place the battery in a large vacuum It is carried out indoors, so that the vacuum degree...

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Problems solved by technology

[0002] Soft-pack batteries, also known as polymer batteries, have many advantages such as small size, light weight, high safety, and flexible design; they are especially suitable for portable electronic devices. The plastic film punching pit is used to accommodate the battery cell, and then the battery cell is packaged, liquid injected, and cut. In the above process, it involves the problem of sealing after formation or sealing before formation. Some waste gas or waste liquid will be produced, such as HF, CO, NO, etc., which will cause the battery to bulge and be difficult to seal, seriously affecting the performance and yield of the battery. However, the vacuuming of the prior art is to place the battery in a large vacuum It is carried out indoors, so that the vacuum degree in the vacuum chamber is consistent with the vacuum degree in the battery. However, such a vacuum chamber needs to waste a lot of energy to keep the vacuum degree. In view of this, the inventor proposes a Improve

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