EV battery
The difference and life analysis of polymer lithium battery and lithium battery
by:Vglory
2021-04-23
1. There is no battery leakage problem. The battery does not contain liquid electrolyte and uses colloidal solids. 2. Can be made into a thin battery: with a capacity of 3.6V400mAh, its thickness can be as thin as 0.5mm. 3. The battery can be designed into a variety of shapes. 4. The battery can be bent and deformed: the polymer battery can be bent up to about 900. 5. Can be made into a single high-voltage battery: liquid electrolyte batteries can only be connected in series to obtain high-voltage, polymer batteries. 6. Since there is no liquid, it can be made into a multi-layer combination in a single particle to achieve high voltage. 7. The capacity will be twice as high as a lithium battery of the same size. The correct statement about the life of polymer lithium battery: Lithium battery life is related to the number of completions of the charging cycle, and not directly related to the number of charging. Simple understanding, for example, a lithium battery used only half of its electricity on the first day, and then it was overflowing with electricity. If it is still the case the next day, that is, use half of the charge, and charge it twice in total. This can only be counted as one charging cycle, not two. Therefore, it may usually take several times to complete a cycle. Every time a charging cycle is completed, the power will decrease a bit. However, the reduction is very small. High-quality batteries will still retain 80% of the original power after being charged for many cycles. Many lithium-powered products are still used as usual after two or three years. Of course, the life of the lithium battery will eventually need to be replaced. The life of a lithium battery is generally 300 to 500 charging cycles. Assuming that the power supplied by a complete discharge is Q, if the reduction in power after each charging cycle is not considered, the lithium battery can supply or supplement 300Q-500Q of power in its life. From this we know that if you charge 1/2 each time, you can charge 600-1000 times; if you charge 1/3 each time, you can charge 900-1500 times. By analogy, if it is charged randomly, the number of times is uncertain. In short, no matter how it is charged, it is constant to add a total of 300Q to 500Q of power. Therefore, we can also understand this: the life of a lithium battery is related to the total charge capacity of the battery, and has nothing to do with the number of recharges. Deep discharge and deep charge and shallow discharge and shallow charge have little difference in the impact of lithium battery life. In fact, shallow charging and shallow charging are more beneficial for lithium batteries. Only when the product's power module is calibrated for lithium batteries, it is necessary to deep discharge and deep charge. Therefore, products powered by lithium batteries do not need to be constrained by the process. Everything is convenient and can be charged at any time without worrying about affecting the lifespan. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete it.
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