Lithium battery production process

Introduction The production process of lithium batteries has developed rapidly with the rapid development of electric vehicles and automobiles, and vehicle power sources have also developed rapidly. However, there are many problems with battery production, which has c

Lithium battery production process

With the rapid development of electric vehicles and automobiles, vehicle power sources are also developing rapidly. However, there are many problems in battery production, resulting in uneven quality of battery products on the market. The battery capacity and subsequent life cannot reach the expected life. This has a lot to do with the unique production process of the battery during production.

The battery structure consists of an outer casing, a top cover, pole plates, separators, bus bars, poles, bridge protection plates, terminals and other components.

The processes of each lithium battery manufacturer have some differences, but they remain the same. The main processes are: batch processing, coating, rolling, cutting, slitting, weldingage of the tabs and winding. baking, liquid injection, forming, molding, volume separation and testing.

The time for each step is different. Generally, the ingredients, cooking and processing time are relatively long, which can take 10 to 48 hours. Other processes are faster, taking 4 to 8 hours. It will take around 15 days in total.

Lithium iron phosphate battery manufacturing process

The manufacturing process of 3C lithium batteries is divided into four procedures:

< p>The base is the pole piece Production

The core is the battery assembly

The key process is battery activation, including battery formation , capacity division and testing

The last step is battery packaging, related to the quality of the finished battery product.

In the production of 3C lithium batteries, each step directly affects the quality andbattery safety. The performance tests of 3C lithium batteries include basic performance, safety performance, environmental performance and electrochemical performance. During the test, the shrapnel microneedle module can transmit current between 1-50A, with strong overcurrent capability and an average of 20W. The battery life can effectively improve the efficiency of testing 3C lithium batteries and ensuring efficient and safe testing.

Lithium iron phosphate batteries differ from other lithium batteries only in positive electrode materials, and the process is similar to that of other lithium batteries. The main processes are: ingredients-coating-rolling-slitting-filming-winding-assembly-laser welding-baking-liquid injection-activation-forming-sealing-cleaning-dividing-sorting. The main difference is that thes lithium iron phosphate materials have poor electrical conductivity, so the particles of the material are relatively fine and the specific surface area is large, making it difficult to disperse the ingredients and making it easier to absorb water. . The other differences really aren't that big.

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