Battery assembly, battery module and battery energy storage device

Abstract

The embodiments of the present application provide a battery assembly, a battery module and a battery energy storage device. The battery assemblycomprises: a heat insulation fixing frame, a top isolation plateand at least one cell; the heat insulation fixing framesurrounds the at least one cellto fix the position of the at least one cell; the cellcomprises a cell main body, an electrodeand a cell pressure relief valve, the cell pressure relief valvebeing used for releasing flue gas; the top isolation plateis mounted on the top of the heat insulation fixing frameand is attached to the top of the heat insulation fixing frame; at least one first flue gas channelis provided on the top isolation plate; the first flue gas channelis used for discharging flue gas; the position of the first flue gas channelis opposite to the position of the cell pressure relief valve; and the top isolation plateis provided with at least one first electrode through hole, so that the electrodeis electrically connected through the first electrode through hole. Therefore, the potential safety hazard during thermal runaway of the cell is reduced.