What is the identification method of a good lithium iron phosphate battery

1. The consistency of the lithium iron phosphate battery cell. If the consistency of the lithium iron phosphate battery cell is not good, if there is a protective plate, according to the bucket principle, its capacity will be the capacity of the lowest capacity cell as a whole, which will cause the entire battery The battery pack will neither sufficiently release electric energy nor sufficiently absorb electric energy due to a battery cell. Over time, the battery pack's lifespan will be short. If the battery pack is not equipped with a protective plate, not only will there be a loss of capacity, but there may also be safety issues and overheating and explosions. The method to detect the consistency of the lithium iron phosphate battery is to connect the cells to be detected in series, a group of 4 or a group of 6, and perform 1C charging and 3C discharge. During the charging and discharging process, watch the rise and fall of the cell voltage. The difference will do. 2. The self-discharge rate of lithium iron phosphate batteries As the power consumption of lithium iron phosphate batteries is large, the self-discharge rate of battery packs should be less than 2% per month. To achieve this, the above-mentioned consistency requirements are indispensable. After the conformance test is passed, the test method for the self-discharge rate is: charge the battery with the same capacity and let it stand for one month, and then measure its capacitance value. 3. The high rate of lithium iron phosphate battery can withstand high rate charge and discharge of lithium iron phosphate battery, its rapid charge and discharge ability is strong, for lithium iron phosphate battery, it must be able to charge and discharge quickly to be able to meet its use For lithium battery requirements, the higher the charge-discharge rate, the better. The detection method for high magnification is to use the highest magnification detection according to the conditions provided by the lithium battery UPS processing manufacturer. If there is a clear serious heating problem during the charging and discharging process, the quality of the battery is not good. Generally speaking, the power lithium battery pack should meet the safety requirements of 3C charging and 30C discharging. 4. Long life, the more charge and discharge cycles, the better. As a general requirement, the lithium iron phosphate battery pack has 85% capacity after 2000 discharges at 1C, and 80% capacity after 3000 times. Of course, each processing factory has different standards due to different technological levels and materials. The detection method is theoretically based on the data supplied by the manufacturer. Whether the data supplied by the manufacturer is true or not, at present can only look at the brand effect, which depends on which brand the consumer believes. 5. The smaller the internal resistance of the lithium iron phosphate battery, the better. This parameter changes with the load, temperature and other factors. As the battery life decreases, the internal resistance gradually increases. 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 article: What are the precautions for purchasing and using lithium batteries?