Abstract
The operating temperature of power lithium-ion batteries in different application scenarios and working conditions not only relates to the economic cost and power performance of the energy system, but also directly affects its life. Therefore, based on the vehicle-mounted power battery, a comprehensive battery test platform was built to carry out charge and discharge tests, and the relationship between capacity and temperature was studied. In the temperature range of -30~50℃, a temperature gradient of 20℃ was used to obtain the charge/discharge curves at different temperatures, and the temperature characteristics of the power LFP batteries were analyzed in terms of charging and discharging.Based on data analysis, the conclusions of the study provide numerical references for the control of temperature thresholds for power battery applications.
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