1. Analysis of the causes of internal short circuit
Internal short circuit in polymer lithium battery may be caused by many reasons. On the one hand, if the production process is not strict during the manufacturing process of the battery, it may cause problems such as burrs and impurities in the electrode material, which may puncture the diaphragm and cause internal short circuit. On the other hand, during use, excessive charging and discharging, high temperature, external force impact and other conditions may also cause changes in the internal structure of the battery, resulting in short circuit. In addition, the aging of the battery after long-term use may also cause the performance of the diaphragm to decline, increasing the risk of short circuit.
2. Preventive measures in the production process
When producing polymer lithium battery, the production process should be strictly controlled. First, ensure the purity of the electrode material to avoid the mixing of impurities. Use high-precision manufacturing equipment to reduce the burrs of the electrode material. During the assembly process, ensure the integrity and correct installation of the diaphragm, improve the quality and thickness uniformity of the diaphragm, so that it can effectively isolate the positive and negative electrodes. At the same time, strengthen the quality inspection link, conduct strict electrical performance and safety performance tests on each battery produced, and promptly discover and eliminate batteries with potential short circuit risks.
3. Precautions during use
When using the polymer lithium battery, follow the correct method of use. Avoid overcharging and discharging, use matching chargers and charging parameters to prevent overcharging or overdischarging of the battery. Avoid exposing the battery to high temperature environments, such as away from fire and direct sunlight. During carrying and use, prevent the battery from external impact and extrusion. At the same time, regularly inspect and maintain the battery, such as observing whether the battery appearance has abnormal conditions such as deformation and bulging, and promptly discover and deal with problems.
4. Technological innovation and future development
In order to better prevent internal short circuits in polymer lithium batteries, scientific researchers and enterprises continue to innovate technology. For example, develop new diaphragm materials to improve their heat resistance, mechanical strength and ion conductivity, and reduce the risk of short circuits. Use an intelligent battery management system to monitor the status of the battery in real time, and cut off the circuit in time when abnormal conditions occur to prevent the occurrence and expansion of short circuits. With the continuous advancement of technology, I believe that there will be safer and more reliable polymer lithium batteries in the future, providing better energy security for the use of various electronic devices.
