The battery pack and its thermoelectric properties of the battery charge and discharge control method

The method of charging and discharging of the battery pack to a battery pack and control its pyroelectric properties, wherein the battery pack has a plurality of regions temperature range. The battery pack includes a plurality of battery packs connected in parallel and a plurality of variable resistors, each parallel battery group are located in the respective temperature range region, and each parallel battery is connected in parallel by a plurality of unit cells together. A variable resistance located between any two of the battery pack in parallel, in order to reduce the operating temperature due to each of the battery pack in parallel, resulting in different amount of residual potential characteristic results in reduced battery life issues.