How to heat lithium ion battery at low temperature

The first method of heating lithium-ion batteries is to rely on a special charger for heating, because it cannot be charged normally in a low temperature environment. The battery is heated by the charger, and the temperature is raised to a temperature above zero, and then the battery is heated. Recharge. This method is relatively safe and effective, but it takes a long time, because the charger can only perform small-rate discharge heating in a low-temperature environment. Therefore, it takes about 1 to 3 hours to heat up before charging. This method is more suitable for fixed places, such as a house in the North Pole. At this time, using a charger to heat can solve the problem of low temperature heating. The only problem is the charging time. Protection board heating The second lithium-ion battery heating method is to heat the lithium-ion battery protection board. There are two types of lithium-ion battery protection boards: PCB and BMS. Both can control the battery for heating, but lithium-ion battery control heating can be divided into two ways. 1. Electric heating film heating This kind of low temperature heating method of electric heating film is important to paste the corresponding heating film on the side of the electric core, and then connect and control through the protection board. The heat generated by the electric heating element is directly transferred to the battery. As the temperature rises, the resistance increases, so as to achieve the purpose of autonomous temperature control. This low-temperature heating method has low overall technical content and can solve temporary problems. 2. The battery itself is preheated. The most powerful way of low-temperature heating of lithium-ion batteries is that the manufacturer specifically reserves a part of the electric energy to heat the battery itself when designing the battery, and as long as the reserve can be heated to a stable and rechargeable The situation is fine. The low-temperature heating method of this kind of lithium-ion battery has a high overall technical content. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete it. Previous article: Why does the battery appear bulging in normal use or long-term non-use?