Energy storage device, motor vehicle and cooling plate assembly
An energy storage device having a plurality of cells for storing electrical energy, and a plurality of cooling plates, which are arranged between the cells, wherein insulation sides of the cooling plates are thermally insulated to inhibit thermal propagation. Also disclosed are a motor vehicle having such an energy storage device and a cooling plate assembly.
1 . An energy storage device comprising:
a plurality of cells configured to store electrical energy; and
a plurality of cooling plates arranged between the plurality of cells,
wherein one or more cooling plates of the plurality of cooling plates each have a cooling side and an insulation side and contact one or more of the plurality of cells with the cooling side and/or the insulation side,
wherein the cooling sides have a higher thermal conductivity than the insulation sides,
wherein the plurality of cells are arranged in one layer or a plurality of layers, and wherein spaces between the plurality of cells arranged in a single layer are filled with thermally insulating material such that thermal insulation is formed between adjacent cells of the plurality of cells in the single layer.
2 . The energy storage device according to claim 1 , wherein each cooling plate of the plurality of cooling plates has a cooling side and an insulation side opposite the cooling side.
3 . The energy storage device according to claim 1 , wherein the cooling sides have a thermal conductivity that is at least five times a thermal conductivity of the insulation sides.
4 . The energy storage device according to claim 1 , wherein the cooling plates are arranged in one layer or a plurality of layers, and wherein each layer comprises more than one cooling plate of the plurality of cooling plates.
5 . The energy storage device according to claim 4 , wherein at least one layer comprises cooling plates having their insulation side pointing in a first common direction, and comprises cooling plates having their insulation side pointing in a second common direction, which is opposite the first common direction.
6 . The energy storage device according to claim 5 , wherein the at least one layer comprises the cooling plates having their insulation side pointing in the first common direction and cooling plates having their insulation side pointing in the second common direction alternately arranged within the at least one layer.
7 . The energy storage device according to claim 4 , wherein cooling plates of two layers of the plurality of layers contact cells of a layer of cells arranged directly between the two layers in each case by an insulation side of the cooling plates of the two layers.
8 . The energy storage device according to claim 1 , wherein each cell is contacted by at least one cooling side.
9 . The energy storage device according to claim 1 , wherein a cooling side and an insulation side of at least one cooling plate are formed between two cells that are adjacent, directly opposite each other, to the at least one cooling plate.
10 . The energy storage device according to claim 1 , wherein the plurality of cells are cylindrical, and/or wherein longitudinal axes of the plurality of cells are oriented parallel to each other.
11 . The energy storage device according to claim 1 , wherein spaces between the plurality of cells arranged in the single layer are filled with fire-retardant material.
12 . The energy storage device according to claim 1 , wherein the plurality of cooling plates are configured to be undulating and/or complementary to the plurality of cells at contact regions to the cells.
13 . The energy storage device according to claim 1 , wherein the insulation sides are thermally insulated by means of a thermally insulating layer.
14 . The energy storage device according to claim 13 , wherein the thermally insulating layer is formed of a mineral material, zeolite, glass fiber and/or silicone, and/or wherein the thermally insulating layer has a thickness of at most 1 mm.
15 . A motor vehicle having an energy storage device according to claim 1 .