What problems should be paid attention to in the use and assembly of polymer lithium battery cells

1. In the use of batteries, it includes the protection of aluminum-plastic composite film, top sealing (edge u200bu200bsealing of the pole handle), side sealing, and protection of the pole handle, and measures to prevent mechanical impact and short circuit. 1. Aluminum-plastic composite film outer packaging protection: It is important to prevent being damaged by sharp parts. For this reason, the environment around the battery should be cleaned up from time to time, sharp parts are prohibited from contacting or colliding with the battery cell, and gloves can be worn when taking it to prevent the surface of the battery cell from being scratched by the fingernail. 2. Top sealing and side sealing protection: in order to prevent the top sealing and side sealing from being damaged and destroying the sealing effect, it is forbidden to bend the top sealing and the side sealing; at the same time, the cell design must adopt reliable insulation isolation Measures to prevent short-circuiting of the negative electrode and the aluminum-plastic composite film. 3. Pole handle protection: The positive lead terminal of the polymer lithium ion battery cell adopts an aluminum pole handle, and the negative lead terminal uses a nickel pole handle. Since the pole handle is thin, bending should be prohibited; at the same time, the pole handle should be prevented from contacting with the aluminum-plastic composite film during the production process, and the ferrule film should be strictly isolated. 4. Prevent mechanical impact, such as falling, hitting, bending the battery cell and accidentally trampling on the battery. 5. It is forbidden to short-circuit the positive and negative electrodes with metal objects or wires. 2. After a battery cell is completed, the next step is to correctly combine the shell and the battery cell protection circuit module to make it a polymer battery. The precautions in this process are: 1. Shell design: (1), enough The mechanical strength is to prevent the cell from being mechanically damaged by external forces. (2) When the cell is installed in the shell, prevent the sharp edges and corners of the shell from scratching the cell; (3) to prevent the aluminum-plastic composite film interlayer pure aluminum from contacting the outside. Short circuit. 2. The battery cell protection circuit must be designed: including the scientific setting of the maximum/minimum voltage, overcurrent protection, and the battery cell (single cell) must be protected against overcharge and overdischarge when the battery cell is used in combination. 3. The transfer of the positive aluminum pole handle through the nickel strip, and the connection between the battery cell and the circuit board should be performed by ultrasonic welding or spot welding technology. 4. Reliable positioning of the battery cell. After the battery cell is assembled, it should be fastened firmly in the shell and will not move, so that the entire lithium-ion battery structure is in a consolidated state. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: What are the uses and precautions of the lithium battery pack balance maintenance instrument?