Abuse tolerance in battery modules
An energy storage device and structure for energy storage cells is provided that includes a plurality of energy storage cells, each of the energy storage cells having side surface areas. The plurality of energy storage cells are arranged in a pattern with each energy storage cell being spaced a specified distance apart from one another. An expandable material is adhered, by an adhesive backing, to at least a portion of the side surface areas of one or more of the energy storage cells, and the expandable material expands within and at least part of the specified distance.
1. A battery module, comprising:
a plurality of energy storage cells, each of the energy storage cells having side surface areas, wherein the plurality of energy storage cells are arranged in a pattern with each energy storage cell in the plurality of energy storage cells spaced apart a specified distance from one another; and
an expandable material adhered, by an adhesive backing, to at least a portion of a side surface area of one or more of the energy storage cells in the plurality of energy storage cells,
wherein the expandable material, in an expanded state, expands within the specified distance,
wherein the expandable material is adhered to each of the energy storage cells in a same pattern on at least some of the energy storage cells in the plurality of energy storage cells,
wherein the expandable material has a compressed height and a fully expanded height,
wherein the fully expanded height is at least two times the compressed height, and
wherein the compressed height substantially occupies the specified distance.
2. The battery module of claim 1 , wherein the expandable material is adhered to each of the energy storage cells in a same pattern on each of the energy storage cells.
3. The battery module of claim 1 , wherein the fully expanded height that is greater than half of the specified distance.
4. The battery module of claim 2 , wherein the fully expanded height that is greater than the specified distance.
5. The battery module of claim 3 , wherein the specified distance is about one millimeter.
6. The battery module of claim 4 , wherein the specified distance is about one millimeter.
7. The battery module of claim 3 , wherein the expandable material has a fully expanded state that is at least 125% of a compressed state of the expandable material, and wherein the expandable material in the expanded state is not as expanded as the expandable material in the fully expanded state.
8. The battery module of claim 4 , wherein the expandable material has a fully expanded state that is at least 125% of a compressed state of the expandable material, and wherein the expandable material in the expanded state, is not as expanded as the expandable material in the fully expanded state.
9. The battery module of claim 1 , wherein the at least some of the energy storage cells in the plurality of energy storage cells is only every other cell in the plurality of energy storage cells.
10. The battery module of claim 3 , wherein the at least some of the energy storage cells in the plurality of energy storage cells is only every other cell in the plurality of energy storage cells.
11. An energy storage device, comprising:
a plurality of energy storage cells, each of the energy storage cells having side surface areas, wherein the plurality of energy storage cells are arranged in a pattern with each energy storage cell in the plurality of energy storage cells spaced apart a specified distance from one another; and
an expandable material adhered, by an adhesive backing, to at least a portion of a side surface area of one or more of the energy storage cells in the plurality of energy storage cells,
wherein the expandable material, in an expanded state, expands within the specified distance,
wherein the expandable material is adhered to each of the energy storage cells in a same pattern on each of the energy storage cells in the plurality of energy storage cells, and
wherein the expandable material has a fully expanded height that is greater than the specified distance.
12. The energy storage device of claim 11 , wherein the specified distance is about one millimeter.
13. The energy storage device of claim 11 , wherein the expandable material has a fully expanded state that is at least 125% of a compressed state of the expandable material, and wherein the expandable material in the expanded state is not as expanded as the expandable material in the fully expanded state.
14. A battery, comprising:
a plurality of energy storage cells, each of the energy storage cells having side surface areas, wherein the plurality of energy storage cells are arranged in a pattern with each energy storage cell in the plurality of energy storage cells spaced apart a specified distance from one another; and
an expandable material adhered, by an adhesive backing, to at least a portion of a side surface area of one or more of the energy storage cells in the plurality of energy storage cells,
wherein the expandable material, in an expanded state, expands within the specified distance,
wherein the expandable material is adhered to each of the energy storage cells in a same pattern on each of the energy storage cells in the plurality of energy storage cells, and
wherein the expandable material has a fully expanded height that is greater than the specified distance.