Battery box having heat directing function, heat directing structure, and method

Abstract

The present invention provides a battery box having a heat directing function, a heat directing structure, and a method. The battery box comprises: a box body, the inner space of the box body being divided, by a heat partition plate, into a battery compartment in an upper portion and a heat concentration and distribution area in a lower portion; and at least one cell, the cell comprising an upper end face and a housing, the upper end face being provided with cell pressure relief valve, the cell being provided in the battery compartment, and the upper end face being provided to face the heat partition plate. The heat partition plate is provided with a heat directing area. An outlet of the cell pressure relief valve corresponds to the heat directing area. A heat flow discharged by the cell pressure relief valve enters the heat concentration and distribution area through the heat directing area. When thermal runaway occurs in the cell, the heat flow discharged by the pressure relief valve flows from the pressure relief valve to the heat directing area, then to the heat concentration and distribution area, and then to the outside of the box, and the bulk density of the heat flow is reduced step by step, thereby achieving the purpose of heat directing.