EV battery
How to properly use lithium-ion batteries, what should we pay attention to?
by:Vglory
2021-04-14
1. Timeliness of charging: (1) The battery is generally in a charged half-charged state when leaving the factory. When riding for the first time, it is best to fully charge the battery, because self-discharge will reduce the charge of the lithium-ion battery, and the active material in it can be activated. (2) Do not run out of battery power every time you ride, because over-discharge can cause great harm to lithium-ion batteries. Long-term over-discharge will reduce the battery life by 3 times. At least, when the battery is too low during electric vehicle riding, stop riding decisively and charge the lithium-ion battery. 2. Timeliness of charging: (1) Lithium-ion battery is effective at any time, even if there is 50% power before charging, it does not matter. This is because it is different from Ni-MH battery, which has a memory effect. The lithium-ion battery does not. So far, except for nickel-metal hydride batteries, other lithium-ion batteries have no memory effect and can be charged as they are used, but it should be noted that lithium-ion batteries cannot be over-discharged. Over-discharge will cause irreversible capacity loss. When the machine warns that the battery is low, it will start charging immediately. (2) Don't overcharge. When the charging completion indicator light is on, stop charging. If the battery is not used for a long time, the battery should be taken out of the instrument and stored in a dry and cool place, and charged once within 60 to 90 days to avoid too long storage time, and the battery will be too low due to self-discharge, resulting in irreversible capacity loss. Because the best storage state of lithium-ion batteries is half-electric storage (that is, storage between 40% and 60% of the nominal capacity of the battery), we understand that the highest voltage of lithium-ion batteries is 4.2V, so the storage voltage is the best It is between 3.8V and 3.9V, and the capacity at this time is basically half. 3. Charging to make up for self-discharge: If the battery is not used for a long time, it should be taken out of the instrument and stored in a dry and cool place, and charged once within 60 to 90 days to avoid excessive storage time and excessive battery power due to self-discharge Low, causing irreversible capacity loss, because the best storage state of lithium-ion batteries is half-electric storage (that is, storage between 40% and 60% of the nominal capacity of the battery). We understand that the maximum voltage of lithium-ion batteries is 4.2 Therefore, the storage voltage is best to be between 3.8V~3.9V, and the capacity at this time is basically half. 4. Original charging equipment: try to use the original lithium-ion battery charger to charge. The original charger has strong supporting performance and moderate charging rate. Now there are some fast charging piles. It is recommended not to use too much. Use it once or twice during the year. excusable. Excessive current charging will also cause greater damage to the internal structure of the battery. 5. Temperature environment during storage: The temperature environment of polymer batteries is relatively wide, ranging from -20°C to 45°C, but in fact the most suitable temperature is room temperature. From the perspective of aging, temperature may be an important reason for the gradual decline of lithium-ion battery capacity. For countries like our country with large temperature differences, the northern region must develop low-temperature-resistant lithium-ion batteries, while the southern region must develop high-temperature-resistant lithium-ion batteries. 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: Will the explosion of lithium ion batteries release toxic gas?
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