What is the impact of ambient temperature on the performance of lithium batteries?

Among all environmental factors, temperature has the greatest impact on the charge and discharge performance of the battery. The electrochemical reaction at the electrode/electrolyte interface is related to the ambient temperature, and the electrode/electrolyte interface is regarded as the heart of the battery. If the temperature drops, the reaction rate of the electrodes also drops. Assuming that the battery voltage remains constant and the discharge current decreases, the power output of the battery will also decrease. If the temperature rises, the opposite is true, that is, the battery output power will rise, and the temperature will also affect the transfer speed of the electrolyte. The temperature rise will speed up, the transfer temperature will drop, the transfer will slow down, and the battery charge and discharge performance will also be affected. However, if the temperature is too high, over 45, it will destroy the chemical balance in the battery and cause side reactions. The discharge efficiency of nickel-cadmium-nickel-hydrogen batteries will be significantly reduced at low temperatures (such as lower than -15), and at -20, the lye reaches the freezing point, and the battery charging speed will also be greatly reduced. Charging at low temperatures below 0 will increase the internal pressure of the battery and open the safety valve when possible. In order to charge effectively, the ambient temperature range should be between 5-30. Generally, the charging efficiency will increase with the increase of temperature, but when the temperature rises above 45, the performance of rechargeable battery materials at high temperatures will degrade, and the cycle life of the battery It will also be greatly shortened. 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: How are lithium batteries made?