3.7V Lithium Polymer Battery production process flow, battery pack structural design

　　3.7V Lithium Polymer Battery production process flow, battery pack structural design. The structural design of 3.7V Lithium Polymer Battery is an extremely important part of the entire battery pack system design, and it is the part that takes up the most time in the entire design process. The production process of 3.7V Lithium Polymer Batterys is not very consistent for each manufacturer. Objectively speaking, the production process of 3.7V Lithium Polymer Batterys is divided into three major sections, one is pole piece production, the other is battery cell production, and the third is battery assembly.

　　3.7V Lithium Polymer Battery production process flow

　　The production process from a simple battery cell to a 3.7V Lithium Polymer Battery is also quite complicated and requires multiple processes. It is no simpler than the manufacturing process of battery cells.

　　1. Loading materials

　　The battery core is transferred to the designated position, and the robot automatically grabs it and sends it to the module assembly line.

　　2. Give the battery core a bath—plasma cleaning process

　　Clean the surface of each cell. Ion cleaning is used here to ensure that contaminants during the process do not adhere to the bottom of the battery cells. Why use plasma cleaning technology? The reason is that plasma cleaning technology is the most thorough stripping cleaning method among cleaning methods. Its biggest advantage is that there is no waste liquid after cleaning. Its biggest feature is that it is very effective on metals, semiconductors, oxides and most polymers. Materials can be processed well, and overall and partial cleaning as well as complex structures can be achieved.

　　3. Assemble the battery cores - apply glue to the battery cores

　　Before the battery core is assembled, the surface needs to be coated with glue. In addition to fixing, the glue also serves the purpose of insulation and heat dissipation. High-precision gluing equipment and robots work together to apply glue at a set trajectory, while monitoring the quality of the glue in real time to ensure the quality of the glue and further improve the consistency of each set of different battery modules.

　　4. Build a home for the battery core - welding of end plates and side plates

　　Battery modules are mostly welded with aluminum end plates and side plates, and are laminated and welded by robots.

　　5. Wire harness isolation board assembly

　　After the welding monitoring system accurately locates the welding position, it binds the material barcode of the wire harness isolation plate to the MES production scheduling management system to generate a separate code for traceability. After coding, the wiring harness isolation board is automatically loaded into the module through a robot.

　　6. Complete the series and parallel connection of batteries - laser welding

　　Through automatic laser welding, the connection between the poles and the connecting piece is completed, and the batteries are connected in series and parallel.

　　7. An important step before going offline—offline testing

　　Check the full performance of the module before going offline, including module voltage/resistance, battery cell voltage, withstand voltage test, and insulation resistance test. The standardized module design principle can be customized to match different models, and each module can also be installed in the best suitable space and predetermined position in the car.

　　Battery pack structural design

　　The 3.7V Lithium Polymer Battery structure refers to the multiple cells, battery protection plates, battery accessories, battery connectors, and battery box shells that are made through spatial imagination or designed through 3D software drawing, and finally the PACK battery pack structure is the same as imagined. , PACK battery pack structure includes new energy power battery pack structure design, EV pure electric power battery pack structure design, electric vehicle PACK battery pack structure plan, 18650 battery pack structure design, polymer battery pack structure design plan, etc.

　　3.7V Lithium Polymer Battery structure PACK design involves many aspects: such as mechanical structure design, which must consider strength, earthquake resistance, heat dissipation/heating, waterproofing, dustproof, etc.; electrical design, safety regulations, EMC safety regulations, etc. must be considered; The design of the lithium battery management system must consider overshoot, over-discharge, over-temperature, detection accuracy, battery balance, etc. To ensure the safety and reliability of the battery, it must be reasonably designed and verified by the market.

　　The internal structure and principles of 3.7V Lithium Polymer Batterys are relatively complex. It can be seen that each production link of the 3.7V Lithium Polymer Battery production process is closely related to product quality and safety. Every link in the lithium battery production process must be strictly and carefully managed, so as to improve the 3.7V Lithium Polymer Battery products. Safety performance.

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