Lithium battery Pack as electric vehicle, mobile devices and other important components, the process in the production process is crucial to the quality and performance of products. This article will introduce the main technological process of lithium battery Pack production line, including cell selection, cell testing, cell matching, module assembly, Pack testing and packaging.

I. Cell choice

1. cell selection: select the appropriate lithium battery cell cell according to the product design and requirements, including the selection of parameters such as positive electrode material, negative electrode material, electrolyte, etc.
2. Supplier evaluation: evaluate cell the credibility, production capacity, quality management system, etc. of the supplier, and select the appropriate supplier.

2. Cell test

1. appearance inspection: check the appearance of cell, including appearance defects, bumps, etc.
2. Electrical Performance Test: Test the voltage, capacity, internal resistance, cycle life of cell to ensure that the cell meets the product requirements.

3. Cell matching

1. capacity matching: Match cell with similar capacity to ensure stable overall performance of the module.
2. Internal resistance matching: Match cell with similar internal resistance to ensure the balance of the module during charging and discharging.

4. Module assembly

1. welding: weld cell in series and parallel according to the design requirements to form modules.
2. Insulation treatment: The module is insulated to prevent short circuit and leakage.

V. Pack test

1. charge-discharge test: perform charge-discharge cycle test on Pack to evaluate its capacity, energy density, cycle life and other performance.
2. Safety Test: carry out safety test on Pack, including overcharge, overdischarge, high temperature, short circuit and other conditions to ensure its safety and reliability.

VI. Packaging

1. outer packaging: outer packaging of Pack, including Shell, label, etc.
2. Quality inspection: carry out quality inspection on the packaged products to ensure that the packaging is intact.

The production process of lithium battery Pack includes cell selection, testing, matching, module assembly, Pack testing and packaging. Through reasonable process flow and strict quality control, the performance and safety of lithium battery Pack can be ensured. With the continuous progress of technology and the change of market demand, the technological process of lithium battery Pack production line is also constantly updated and optimized to meet the needs of different products and improve production efficiency and product quality.