Soft package battery and manufacturing process therefor

Abstract

The invention relates to a soft package battery and a manufacturing process therefor. The process comprises the following steps: manufacturing an electrical core, wherein the electrical core comprises an electrical core body and exposed a positive electrode lug and a negative electrode lug; forming a PCB connecting plate, wherein the PCB connecting plate comprises two side frames and a plurality of PCB plates connected into one body, the PCB plates are arranged in parallel, and the two ends of each PCB plate are connected with the two side frames; cutting the PCB connecting plate to cut off the materials among the PCB plates, and meanwhile, cutting the connection places between each PCB plate and the two side frames while keeping reserved connecting points, cutting the four corners of each PCB plate into chamfering, wherein the radius of the chamfering is greater than 2 mm; separating each PCB plate from the cut PCB connecting plate, taking the PCB plates out, then welding and connecting the PCB plates on the positive electrode lug and the negative electrode plate, and packaging and forming. By cutting the PCB connecting plate into multiple PCB plates, keeping the connecting points and cutting the four corners of each PCB plate into chamfering, the battery is effectively protected, the product quality is improved and the production cost is 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

Images