Soft pack battery and its manufacturing process

Abstract

The invention relates to a soft-pack battery and a manufacturing process thereof. The process includes the following steps: making a cell, the cell includes a cell body and exposed positive and negative tabs; forming a PCB connection board, and the PCB connection The sheet board includes two side frames and multiple PCB boards connected into one body. The multiple PCB boards are arranged in parallel and connected to the two side frames at both ends; the PCB connecting sheet is cut, and the gap between the PCB boards is cut off. At the same time, the connection between each PCB board and the side frame is cut to the reserved connection point, and the four corners of each PCB board are chamfered, and the chamfering radius is more than 2 mm; each PCB board is cut from After cutting, the PCB boards are separated, and the PCB boards are taken out, and the PCB boards are soldered and connected to the positive and negative tabs; the packaging is formed. By cutting the PCB connecting board into multiple PCB boards, leaving connection points and chamfering the four corners of each PCB board, the battery can be effectively protected, the product quality can be improved, and the production cost can be reduced.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a soft pack battery and a manufacturing process thereof. Background technique [0002] With the continuous development of electronic products, lithium-ion batteries have been widely used, and the current electronic products are constantly being updated, and the requirements for lithium-ion battery products are also getting higher and higher. According to the different electrolyte materials used in lithium-ion batteries, they can be divided into liquid lithium-ion batteries and polymer lithium-ion batteries. [0003] Polymer lithium-ion batteries mainly include battery cells, battery PCB protection boards, and outer packaging. The appearance structure of the battery cell includes the main body of the battery cell, the exposed positive tab and the exposed negative pole; the exposed positive tab is usually a nickel-turned aluminum tab, which consists of two parts, an aluminum str...

AI Technical Summary

Problems solved by technology

[0005] In addition, in the battery manufacturing process, the PCB protection board is directly packaged with the battery cell. When the PCB board is connected to the positive and negative tabs, it is usually necessary to adjust the position of the PCB board, which will involve the movement of the PCB board, etc.

However, for soft pack batteries, the packaging is usually soft packs. If the appearance of the soft pack battery is damaged, it will cause the battery to bulge, leak, and even burn if it is serious, which will greatly affect the safety of customers and product safety.

When the traditional PCT board is assembled, the PCB board is separated from the original frame by cutting, which is easy to form burrs and corners, which is very easy to cause damage to the flexible packaging

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