FIELD: railway transport.
SUBSTANCE: battery module, charging module and an electronic device that supports high power fast charging. Battery module (100) contains a battery element (14), which contains a battery cell body (140), a first terminal, a second terminal and a third terminal. The first terminal, the second terminal and the third terminal are electrically connected separately to the battery cell body (140). The first lead and the third lead have the first polarity, and the second lead has the second polarity. The second terminal and the first terminal together are capable of supplying voltage and current to the battery cell (140) case or are capable of outputting voltage and current from the battery cell case (140). The second terminal and the third terminal together are capable of supplying voltage and current to the battery cell body (140) or are capable of outputting voltage and current from the battery cell body (140). The first polarity is different from the second polarity.
EFFECT: increase of charging efficiency, reduction of the amount of heat generated with a relatively small space occupied.
18 cl, 48 dwg, 4 tbl
