Introduce the assembly process and method of soft-packed lithium iron phosphate battery

The assembling process and method of soft-coated lithium iron phosphate battery. Whether in the digital field or in the power application field, the soft-clad lithium iron phosphate battery is a very important technical route. The soft pack battery is actually the use of aluminum-plastic film as a packaging material for the battery. The reason why soft-pack batteries can be hot-packed is because the material they use is aluminum-plastic packaging film. The soft-packed lithium iron phosphate battery is a liquid lithium-ion battery set on a layer of polymer battery, and the aluminum-plastic film packaging is used in the structure. In the event of a safety hazard, the soft-packed battery will only be happily cracked, so The overall safety performance is high, but with the development of the economy, the people of the soft-packed lithium-ion battery pack have also put forward higher requirements. The existing lithium-ion battery is complicated to install and the process is cumbersome and needs to be improved. Lithium iron phosphate battery. The assembly process and method of JPG soft-coated lithium iron phosphate battery. Aluminum-plastic film forming process. The soft-coated lithium iron phosphate battery can be designed into different sizes according to user requirements. When designing the external dimensions, the corresponding mold must be opened to form the aluminum plastic film. Under normal circumstances, single hole is selected for thin wall and double hole for thick wall, because the deformation of one side is too large to break through the deformation limit of the aluminum-plastic film, resulting in cracking. Top edge sealing process The top sealing process is the first packaging process for soft-clad lithium iron phosphate batteries. Top sealing and side sealing actually include two processes, top sealing and side sealing. First put the rolled core into the hole, and then fold the packaging film in half along the dotted line. The top seal is a sealed tab, which is made of metal. Some cells, especially thick cells, may deform due to large internal stresses. Therefore, some factories have established a fixture forming process called fixture baking. After cutting the airbag with two sealing rings, cut and fold the edges, that is, cut the edges and the two sealing rings to a suitable width, and then fold them to ensure that the width of the battery does not exceed the standard. The folded battery can be divided into the capacity of the cabinet. In fact, it is a capacity test to see whether the capacity of the battery has reached the specified minimum. In principle, all batteries must be tested before leaving the factory to ensure that unqualified batteries will not be delivered to customers. However, when the battery output is large, some companies will use statistical probability to divide the output to determine the qualified rate of the batch battery output. In the process of static, chemical, and fixture shaping, after the liquid is injected and completed, the first one is static cells. According to different processes, they will be divided into normal temperature and high temperature static and static. The purpose of static is to allow the injection of electrolyte to fully immerse the electrode. The cell can then be transformed. After the capacity is divided, the qualified battery capacity will enter post-processing, including appearance inspection, paste yellow glue, edge voltage detection, tab transfer welding, etc. Some processes can be added or reduced according to customer needs. The last is OQC inspection, then packaging and shipping. Note that we are still in the cell. The battery is sent to the packaging plant for further processing, including soldering circuit boards, packaging, and so on. Downstream of the packaging plant are various manufacturers such as Apple, Lenovo, and Huawei. They will take the battery pack to the terminal and then deliver it to our consumers. Process flow of soft-coated lithium iron phosphate battery Process process of soft-coated lithium-ion battery. Because the outer shell of JPG is aluminum-plastic, the production process is different from the other two commercial batteries in some respects. Such as aluminum-plastic film packaging technology, molding technology, etc. Soft-packed lithium iron phosphate battery, aluminum-plastic film has a large deformation space, unlike steel shell aluminum shell batteries that are prone to thermal explosion when out of control; the outer shell is a layer of aluminum plastic film, which is light in weight, and the proportion of inactive parts is small, and the weight of the soft battery It is 40% lighter than a steel shell lithium-ion battery of the same capacity and 20% lighter than an aluminum shell battery. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Explain the difference between ternary lithium ion battery and lithium iron phosphate battery