The decrease of temperature will slow down the electrode reaction rate. Assuming that the battery voltage remains constant, the charging and discharging currents will decrease, thus reducing the power of the battery. From the viewpoint of various environmental factors, temperature has the greatest influence on battery charging characteristics.lithium ion battery VS lead acid battery Corrosion at the electrode level and electrolyte interface is closely related to the operating temperature, and the electrolyte interface is considered the heart of the battery. On the contrary, when the temperature increases, the power of lithium polymer batteries increases. In addition, temperature affects the rate of electrolyte transportation. An increase in temperature speeds up transportation, while a decrease in temperature slows it down, thus affecting the charging characteristics of the battery. However, high temperatures over 45°C can disrupt the balance of chemical reactions within the battery, leading to adverse reactions.

Hazards of lithium batteries at low temperatures.

If the lithium battery is used in a low temperature environment for a short period of time or the temperature is not low enough, it will only affect the battery capacity temporarily, but will not cause permanent damage. However, prolonged use in a low temperature environment or -40℃ may cause the lithium battery to "freeze" and cause permanent damage.

In addition, when charging lithium batteries at low temperatures, lithium metal will be dissolved on the surface of the anode material, and through this development process is irreversible. This will directly lead to permanent damage to the Chinese battery and reduce the safety and technical performance of the battery. Therefore, many lithium battery devices are equipped with protective working devices to prevent students from learning charging at low temperatures.

Effect of temperature on charging of lithium-ion batteries.

In the power supply system of pure electric vehicles, temperature control is one of the most important parameters and a key factor affecting battery performance.lithium battery vs lead acid Temperature must be labeled in all battery test systems because it has a significant impact on battery performance, including internal resistance, charging and discharging characteristics, safety, and service life.

The average discharge voltage and capacity of lithium batteries decrease with temperature, especially around -20 °C. The average discharge voltage and capacity of lithium batteries decreases with temperature, especially around -20 °C.

According to the electrochemical analysis, the SEI film resistance and solution resistance change very little throughout the temperature range, which has little effect on the low-temperature characteristics of the battery. The charge transfer resistance, on the other hand, varies more throughout the temperature range, and the variation is larger than that of the solution resistance and SEI film resistance. The reason for this is that as the temperature decreases, the ionic conductivity of the lithium battery electrolyte decreases, and the SEI membrane resistance and electrochemical corrosion resistance increase, leading to an increase in ohmic polarization, concentration polarization, and electrocatalytic polarization at low temperatures. In the charge-discharge curve of the battery, the average voltage and discharge capacity decrease with the decrease of temperature.

Therefore, try to keep the use of lithium batteries at different temperatures between 0 and 35℃. Lithium-ion batteries carry out a continuous decline in performance at low temperatures, and the battery's charge/discharge management ability gradually diminishes, shortening its service life. In a short period of low temperature working environment, lithium battery damage is only a temporary, will not have a significant impact on the battery system capacity problems.