What safety measures are included in the design of the Polymer Lithium-Ion Battery?
Publish Time: 2024-08-12
1. Battery structure and designSoft packaging: Polymer Lithium-Ion Battery uses soft packaging and polymer electrolyte, and the shell is thin and soft. Compared with hard-packaged lithium-ion batteries, it is less destructive when it is suddenly damaged.Explosion-proof design: Install an explosion-proof valve on the metal shell to prevent the internal pressure of the battery from being too high and causing an explosion.Thermal management: Apply ventilation cooling or liquid cooling to perform thermal management, use phase change materials, etc. to prevent overheating, and ensure that the battery operates within the normal operating temperature range.2. Protection circuit designVoltage management: Provide overvoltage charging protection to ensure that each battery or battery pack does not exceed the upper limit of the charging voltage to prevent safety problems caused by overcharging.Current management: Includes charging overcurrent and discharging overcurrent protection, as well as short-circuit protection functions to prevent battery heating and short circuit caused by excessive current.Battery protection circuit board: Designing a battery protection circuit board, which adds manufacturing costs but improves battery safety, is a standard feature of regular lithium-ion battery manufacturers.3. Material and component selectionHigh-safety battery: Select batteries with high safety and pay attention to the material selection of the battery to reduce the risk of thermal runaway.Corrosion-resistant, low-impedance materials: Select corrosion-resistant, low-impedance conductive materials, as well as applicable structural materials and insulating materials to improve the stability and safety of the battery.Flame-retardant materials: Use flame-retardant materials and have design measures to prevent burning to reduce the risk of fire.4. Production process and quality controlRaw material selection and storage: Select raw materials with high purity and stable chemical properties, store them in a dry and suitable temperature environment to avoid the impact of impurities and moisture on battery performance and safety.Production process control: Set up obvious safety warning signs in the equipment operation area, conduct regular equipment operation training for employees, and improve employees' safety awareness. Comprehensively identify and assess the sources of danger in the production process, and formulate corresponding preventive measures.Quality inspection and traceability: Set up a quality inspection link to conduct strict quality inspection on the assembled batteries. Establish a complete battery traceability system to record information such as the production batch, raw material source, and production process of the battery, so that it can be traced and found out in time when problems occur.5. Use and storageSafe use: Do not use non-designated and non-safety certified chargers to charge the battery. Do not place the Polymer Lithium-Ion Battery near heat sources or fire sources. Control the charge amount to avoid overcharging the battery. Mechanical impacts on the battery and dropping the battery are prohibited to avoid artificial short circuits of the battery cells.Storage conditions: Battery and battery cell warehouses should be set up independently, the temperature should be controlled within the range of 20±5℃, the maximum should not exceed 30℃, the relative humidity should not exceed 75%, the warehouse should be kept clean, dry and well ventilated, and smoke and temperature alarm devices and automatic sprinkler facilities should be installed.
