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Lithium ion battery production process, lithium ion battery pack production line. Objectively speaking, the production process of lithium-ion battery is divided into three sections: the first is the production of electrode, the second is the production of cell, and the third is the battery assembly. The production process of lithium-ion battery is not very consistent with that of each manufacturer. Every link in the production line of lithium-ion battery should be strictly and carefully managed, so as to improve the safety performance of lithium-ion battery products.

Lithium ion battery production process

Mixing, coating, winding and testing are important production processes for lithium ion batteries.

1. Slurry mixing is an important part of lithium-ion battery equipment. The positive paste of lithium-ion battery is composed of adhesive, conductive agent, positive material, etc., and the negative paste is composed of adhesive, graphite carbon powder, etc; The preparation of positive and negative electrode slurry includes the mutual mixing, dissolution and dispersion of liquid and liquid, liquid and solid materials; The quality of slurry dispersion directly affects the quality and performance of lithium-ion batteries.

2. Coating determines the consistency and superiority of the battery and plays a technical role in battery manufacturing. No matter what kind of battery (such as cylindrical or square) is produced, the coating machine used in manufacturing is the same; Different types of batteries need to be equipped with different types of winding machines.

3. In addition to lithium ion battery winding machines, there are also capacitor winding machines, textile winding machines, etc. According to the operation mode of the machine, it can be divided into manual winding machine, semi-automatic winding machine and full-automatic winding machine.

4. The importance of testing items has become increasingly prominent. Lithium-ion batteries are easy to burn or explode due to short circuit, overcharge and other reasons, and will form a finished battery with a protective plate in application; In applications with high energy density, lithium-ion batteries need to be series-parallel combined to form lithium-ion batteries, which are managed by the battery management system (BMS).

It can be seen that the production process of lithium ion battery is relatively long, including more than 50 processes, and more than 50 kinds of equipment are required. The whole manufacturing process can be divided into four process sections, namely, pole chip manufacturing, cell assembly, cell activation detection and battery packaging. The devices related to pole chip manufacturing are called front-end devices, the devices related to cell manufacturing are mid-end devices, and the devices related to cell activation detection and battery packaging are back-end devices.

In recent years, lithium-ion battery production has developed towards integration, integration and automation. The lithium battery automation production line provides standardized products for customers. The traditional development method cannot cope with the rapidly changing needs of customers.

The quality of lithium-ion battery is very important. At present, the main problem of domestic lithium-ion battery industrialization is the poor consistency of battery quality. The reasons are mainly due to the large system error caused by manual operation and poor equipment accuracy, and the inability to sustain production. To fundamentally solve the problem of poor quality consistency in batch production of lithium ion batteries, it is necessary to improve the control accuracy of production equipment and the automation level of production line.

Lithium ion battery pack production line

There are many production processes before the formation of lithium-ion batteries. For the largest one, follow the following line: precursor material → cell assembly → lithium cell → lithium-ion battery/lithium-ion battery pack. In the industry, there are multiple manufacturers engaged in the same production, and there is also one manufacturer engaged in multiple production.

The lithium battery automatic production line can realize the automatic code scanning - liquid injection - weighing - liquid replenishment - sealing operation in the super purification glove box, realize the efficient and completely unmanned automatic production, greatly save the labor cost, greatly improve the output, product quality and finished product rate, and maximize the benefits for customers.

What is the process flow of lithium ion battery pack production line?

1. Separation and grouping process

2. Automatic welding process

3. Semi-finished product assembly process

4. Aging test process

5. PACK detection process

6. PACK packaging process

In the whole process from lithium ion battery cell to automation module to PACK production line, the automation degree of assembly line is the key factor to determine product quality and production efficiency. In order to further improve production efficiency and reduce costs, we must vigorously promote the application of automated production equipment.

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