Data Collection and Performance Analysis of Lithium-Titanate Battery Charging and Discharging at Low Temperature

In a low-temperature environment, the performance of lithium-ion batteries is limited greatly due to the slower chemical reaction rate inside the battery and the hindered migration of lithium-ions. Low-temperature charging and discharging tests were carried out on the lithium-titanate battery by using the test device and data acquisition system. During the tests, some parameters were monitored such as the internal resistance, voltage, and temperature, and the low-temperature performance of the lithium-titanate battery was analyzed. The results show that the internal resistance and the charging voltage continue to increase, while the discharging voltage and capacity continue to decrease with the environmental temperature decrease.