一种电池组和以其热电特性控制电池组充放电的方法，其中的电池组具有数个以不同温度范围区分之热区。这个电池组包括数个并联电池组以及数个可变电阻，每个并联电池组分别位在各个热区，且每一并联电池组是由数个电池并联而成。可变电阻则位于两两并联电池组之间。

A battery pack and a method of controlling charge-and-discharge of the battery pack by its thermoelectric property are provided in which the battery pack has a plurality of thermal regions divided by different temperature range regions. This battery pack contains a plurality of parallel-connected battery groups and a plurality of variable resistances. The parallel-connected battery groups are dislocated in each of the thermal regions respectively, and each of the parallel-connected battery groups includes battery cells connected in parallel. The variable resistances are disposed between two parallel-connected battery groups.