A battery module includes a first heat transfer component and a first thermal expansion material member that are disposed between the battery cells adjacent to each other. The first thermal expansion material member has a thermal conductivity lower than a thermal conductivity of the first heat transfer component and expands at a first predetermined temperature or higher, in which when temperature of the first thermal expansion material member is less than the first predetermined temperature, the adjacent battery cells are connected to each other via a high thermal conductive route including the first heat transfer component and having a first thermal conductivity, and in which when the temperature of the first thermal expansion material member reaches the first predetermined temperature or higher, the adjacent battery cells are connected to each other via a low thermal conductive route having a second thermal conductivity lower than the first thermal conductivity.

A heat-removing sheet includes a plurality of endothermic particles and a chemically cured or radiation cured resin binding the endothermic particles together. The heat-removing sheet includes the endothermic particles at greater than 60 weight percent, has a flexural modulus of less than 3000 MPa and a flexural strength of greater than 0.15 MPa. The heat-removing sheet is a single free-standing layer.

A heat-removing sheet includes a plurality of endothermic particles and a chemically cured or radiation cured resin binding the endothermic particles together. The heat-removing sheet includes the endothermic particles at greater than 60 weight percent, has a flexural modulus of less than 3000 MPa and a flexural strength of greater than 0.15 MPa. The heat-removing sheet is a single free-standing layer.

The invention provides a battery pack and a vehicle. A cell group is configured in the battery pack, and the cell group comprises a plurality of cells, wherein the cells comprise first cells and second cells, the first cells have a better cold resistance than the second cells, and arrangement positions of the first cells and the second cells depend on the heat dissipation capacity in the battery pack.

A heating device for a prismatic battery cell of a high-voltage battery of a motor vehicle includes two sheet-shaped heating elements to be arranged on two opposite lateral outer sides of a cell housing of the battery cell, and two connecting elements to be arranged on a housing cover of the cell housing. The connecting elements are electrically connected to terminals of the two heating elements. The connecting elements are flexibly formed, at least in certain regions, and as a result the heating elements are connected in a hinge-like manner. The heating device can be arranged by arranging the first heating element on the first lateral outer side of the cell housing, swinging the second heating element over the housing cover, and arranging the second heating element on the second lateral outer side on the cell housing.

In a heat, dissipating structure, a plurality of heat dissipating members for a heat source are connected. Each heat dissipating member has a heat conduction sheet that extends while winding in a spiral shape for conducting the heat from the heat source; a cushion member which is provided on an annular rear side of the heat conduction sheet and can be more easily deformed corresponding to the outer surface shape of the heat source than the heat conduction sheet; an adhesive layer that fixes the heat conduction sheet and the cushion member and is more easily deformed than the heat conduction sheet; and a through passage penetrating in the direction in which the heat conduction sheet extends while being wound. The heat dissipating members are connected by connection members in a state of being aligned perpendicular to the direction in which the heat conduction sheet extends while being wound.

An apparatus for resisting flame of a battery of an electric vehicle includes: a battery module including a plurality of battery cells; and a flame resisting sheet provided between the plurality of battery cells.

A partition member has two surfaces in a thickness direction, and separates single cells that make up an assembled battery. When the average temperature of one of the two surfaces exceeds 180° C., a thermal resistance per unit area (θ.sub.1) in the thickness direction satisfies Expression 1 below, and when the average temperatures of both of the two surfaces do not exceed 80° C., a thermal resistance per unit area (θ.sub.2) in the thickness direction satisfies Expression 2 below. $\begin{array}{cc}{\theta }_1\ge 5.\times {10}^{-3}\left(m^2.Math.K/W\right),\mathrm{and}& \left(\mathrm{Expression}1\right)\end{array}$$\begin{array}{cc}{\theta }_2\le 4.\times {10}^{-3}\left(m^2.Math.K/W\right)& \left(\mathrm{Expression}2\right).\end{array}$

A partition member has two surfaces in a thickness direction, and separates single cells that make up an assembled battery. When the average temperature of one of the two surfaces exceeds 180° C., a thermal resistance per unit area (θ.sub.1) in the thickness direction satisfies Expression 1 below, and when the average temperatures of both of the two surfaces do not exceed 80° C., a thermal resistance per unit area (θ.sub.2) in the thickness direction satisfies Expression 2 below. $\begin{array}{cc}{\theta }_1\ge 5.\times {10}^{-3}\left(m^2.Math.K/W\right),\mathrm{and}& \left(\mathrm{Expression}1\right)\end{array}$$\begin{array}{cc}{\theta }_2\le 4.\times {10}^{-3}\left(m^2.Math.K/W\right)& \left(\mathrm{Expression}2\right).\end{array}$

A load distributing thermal runaway barrier for an energy storage battery cell pack includes a first separator plate, a second separator plate, and at least one first elastic member arranged between the first and second separator plates. Each first elastic member is configured to maintain a first load in response to a pressure applied to at least one of the first and second separator plates. The load distributing thermal runaway barrier also includes a third separator plate, a fourth separator plate, and at least one second elastic member arranged between the third and fourth separator plates. Each first elastic member is configured to maintain a second load in response to a pressure applied to at least one of the third and fourth separator plates. The load distributing thermal runaway barrier additionally includes a thermally insulating pad arranged between the second and third separator plates.