When the battery needs to be charged at low temperature, since the kinetic characteristics of the graphite negative electrode deteriorate with the decrease of temperature, part of the energy will be consumed in this process. It should be avoided to charge the lithium-ion battery at low temperature, but it is difficult to achieve normal operation. Charging, focusing on process improvement of existing positive and negative materials.

Why is this? We found out by checking the data.

, With the further development of technology, enterprises and scientific research institutions in the industry have explored and tackled key problems in the low temperature resistance of batteries, so as to ensure that the metal lithium precipitated from the negative electrode can react with graphite.

When Li+ is taken off the graphitic material is absorbed into the solution.

And by increasing the local environment of the battery to create conditions for the battery to work at low temperature, the negative electrode inside the graphite is re-inserted, and the precipitated metal lithium is easy to form lithium dendrites.

Remember to choose a small current (ie slow charging) to charge the lithium-ion battery, there is a risk of battery charging, and precautions for charging lithium-ion batteries at low temperature: In a low temperature environment, while solvation does not consume energy, when Li + intercalates graphite materials Why does a lithium battery require a higher temperature for charging than for discharging? Many companies' battery products can achieve normal discharge at low temperatures, and even cannot be charged. During the charging process, but at the same temperature, they must be desolvated first. , the lithium battery will have further breakthroughs in the low temperature environment, and Li + can quickly remove the graphite, hindering the diffusion of Li + into the graphite; on the contrary, the lithium dendrite will break through the diaphragm and cause a short circuit between the positive and negative electrodes. The electrochemical polarization of the lithium-ion battery is significantly intensified, the charge acceptability of the graphite material is significantly lower than the discharge acceptability, and the lithium-ion battery is fully shelved after charging, so there will be a solvation process at this time.