Battery set and battery pack

Abstract

A battery assembly comprising: a cell array unit (1) wherein the cell array unit (1) comprises several battery cells (11) arranged in series; a heat exchange element (2) wherein the heat exchange element (2) extends along a first direction, the first direction corresponding to the arrangement direction of the several battery cells (11), wherein the heat exchange element (2) is configured to cool each battery cell (11); a heat supply element (3) wherein the heat supply element (3) is mounted on the heat exchange element (2) and the heat supply element (3) is in close contact with each of the battery cells (11), wherein the heat supply element (3) is configured to heat each battery cell (11).

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