Production process of cylindrical lithium manganese battery and the causes of liquid leakage

I. Production process of lithium manganese cylindrical battery

Objectively speaking, the production process of cylindrical lithium manganese battery is divided into three sections, one is pole plate production, the second is cell production, and the third is battery assembly. In the production process of lithium ion battery, the production of pole plate is the foundation, the production of cell is the core, and the battery assembly is related to the quality of finished product of lithium ion battery. The specific links of the production process of lithium ion battery include positive pulping, negative pulping, positive plate, negative plate, steel shell assembly, liquid injection, testing and packaging.

As we all know, the production process of lithium-manganese cylindrical battery is quite complicated. After all, the safety performance of lithium-ion battery products is directly related to the life and health of consumers. Naturally, the production and manufacturing of lithium-ion battery have high requirements on the performance, precision, stability and automation level of equipment.

Taking the preparation of electrode paste in the production process of lithium ion battery as an example, this link is not only the front-end link, but also an important link in the whole production process. After all, the impact of electrode paste mixing and dispersing process on product quality is greater than 30%. Why?

The reason is that the preparation of positive and negative slurry of lithium ion battery includes a series of technological processes such as mixing, dissolving and dispersing between liquid and liquid, liquid and solid materials, and is accompanied by changes in temperature, viscosity and environment. In positive and negative slurry, the dispersion and uniformity of granular active substances directly affect the movement of lithium ions between the battery poles, so the dispersion quality of electrode slurry directly affects the product performance of lithium ion battery.

2. Reasons for liquid leakage of lithium manganese cylindrical batteries

The main reasons are: the internal pressure is too large, the external packaging is not qualified.

01, in the process of battery manufacturing, if the following problems occur, it is easy to cause battery leakage:

1. When welding the battery shell and cap, the welding is not firm, not sealed, there are leakage welding, virtual welding, weld cracks, cracks and other problems

2. When sealing the steel ball, the size of the steel ball is not appropriate, and the material of the l steel ball is different from that of the cap

3. The positive pole of the cap is not riveted tightly, there is a gap, and the elasticity of the insulation gasket is not appropriate, and it is not corrosion resistant and easy to aging

02, in the use of the process of possible problems:

1. The battery is not original, and the voltage or current is too high

2. The battery often bumps in the process of ordinary use, damaging the aluminum plastic film, and the internal strength of the battery is not enough

Jiangmen Hongli Energy Co., Ltd. is a lithium battery manufacturer integrating scientific research, development, production and sales, and providing professional solutions for lithium manganese batteries and lithium manganese cylindrical batteries. Our main products are CR123A, CR2, CR1/3N, CR14250, CR14505, CR17450, CR17500, CRP2 and 2CR5. All circles are welcome to consult and understand.

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