About the heat dissipation of lithium-ion power lithium-ion battery packs

The heat dissipation problem of lithium-ion power lithium-ion battery packs has always been one of the key technologies in the industry. Lithium batteries have higher energy density and greater charge-discharge rate related to traditional lead-acid batteries, nickel-cadmium batteries, and nickel-hydrogen batteries, so they generate serious heat during work; especially when used in power lithium-ion batteries, the road conditions are complicated. , The environment is harsh (especially in the high temperature summer), and the battery heat generation is more intense, which has a more significant impact on the battery's capacity, life, and safety performance. Battery.jpg To some extent, the safety problem of lithium battery is actually its thermal problem. The heat generation rate of the battery is greater than the heat dissipation rate, and the battery pack will heat up. Once it exceeds the critical point of temperature that the battery pack can withstand, electricity will be used. There will be serious safety accidents in the equipment, so the heat dissipation problem of the lithium-ion power lithium-ion battery pack is crucial. Lithium-ion power lithium-ion battery packs will have a certain amount of heat during the charging and discharging process, especially in the process of high-current charging and discharging, a large amount of heat will appear inside the lithium battery, but due to the structural characteristics of the lithium battery in different directions There is a significant difference in thermal conductivity. The thermal conductivity in the direction parallel to the pole piece is significantly higher than the thermal conductivity in the direction perpendicular to the pole piece. Therefore, different heat dissipation methods not only have significant differences in efficiency. 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. Previous post: Detailed explanation of the development status of lithium-ion power lithium-ion battery cathode material industry