The battery products of many enterprises can realize normal discharge at low temperature, but at the same temperature, it is difficult to realize normal charging, or even unable to charge. When Li + is embedded in graphite material, it must be desolvated first, which will consume certain energy and hinder the diffusion of Li + to the inside of graphite; on the contrary, when Li + comes out of graphite material and enters into solution, it will have a solvent. The process of solvation does not consume energy, and Li + can get out of graphite quickly. Therefore, the charge acceptance ability of graphite material is obviously inferior to the discharge acceptance ability.

In low temperature environment, there are some risks in lithium battery charging. With the decrease of temperature, the dynamic characteristics of graphite anode become worse and worse. During the charging process, the electrochemical polarization of the anode is obviously intensified. The precipitated lithium metal is easy to form lithium dendrite, break through the diaphragm and cause short circuit between the positive and negative electrodes.

Try to avoid lithium-ion battery charging at low temperature. When the battery must be charged at low temperature, it is necessary to select a small current (i.e. slow charge) to charge the lithium-ion battery as much as possible, and fully use the lithium-ion battery after charging, so as to ensure that the metal lithium precipitated from the negative electrode can react with graphite and re embed into the graphite negative electrode.

Enterprises and scientific research institutions in the industry explore and tackle the low-temperature performance of batteries, focusing on the improvement of the existing anode and cathode materials process, as well as creating conditions for batteries to work at low temperature by improving the local environment temperature of batteries. With the further development of technology, lithium battery will have a further breakthrough in low temperature environment.