Multilayer thermal laminate with aerogel for battery cell enclosures
A multilayer thermal laminate with aerogel is used for a battery cell enclosure to improve thermal properties and to reduce thermal inhomogeneity in the form of localized hotspots that exceed a desired rated temperature, thereby enabling a more compact design within rated thermal design limits for a given electrical performance.
1. A battery cell enclosure, comprising:
a multilayer thermal laminate, further comprising:
a first layer at least partially enclosing a battery cell, the first layer comprising an aerogel insulator;
a second layer at least partially enclosing the first layer, the second layer comprising a thermal conductor;
a third layer at least partially enclosing the second layer, the third layer comprising a thermal storage medium; and
a directional conductor formed entirely within the third layer, the directional conductor extending beyond a length of the battery cell to transmit heat over the length of the battery cell, the directional conductor having a same thickness as a thickness of the third layer.
2. The battery cell enclosure of claim 1 , wherein the aerogel insulator is a silica aerogel.
3. The battery cell enclosure of claim 1 , wherein the thermal conductor is graphite.
4. The battery cell enclosure of claim 1 , wherein the thermal storage medium is a phase change material.
5. The battery cell enclosure of claim 4 , wherein the phase change material comprises a wax.
6. The battery cell enclosure of claim 4 , wherein the phase change material has a melting temperature range between 50 C and 60 C.
7. The battery cell enclosure of claim 1 , wherein the directional conductor comprises at least one of a metal bar and a heat pipe.
8. The battery cell enclosure of claim 1 , wherein:
the first layer consists of a silica aerogel enclosing the battery cell;
the second layer consists of graphite enclosing the battery cell; and
the third layer consists of a phase change material.
9. The battery cell enclosure of claim 1 , wherein the battery cell is housed in at least one of a power storage adapter and a portable information handling system.
10. The battery cell enclosure of claim 1 , wherein the first layer is bonded to a metal foil layer that covers a chemical barrier layer enclosing the battery cell.
11. A battery cell, comprising:
a multilayer thermal laminate enclosure, further comprising:
a first layer at least partially enclosing the battery cell, the first layer comprising an aerogel insulator;
a second layer at least partially enclosing the first layer, the second layer comprising a thermal conductor;
a third layer at least partially enclosing the second layer, the third layer comprising a thermal storage medium; and
a directional conductor formed entirely within the third layer, the directional conductor extending beyond a length of the battery cell to transmit heat over the length of the battery cell, the directional conductor having a same thickness as a thickness of the third layer.
12. The battery cell of claim 11 , wherein the aerogel insulator is a silica aerogel.
13. The battery cell of claim 11 , wherein the thermal conductor is graphite.
14. The battery cell of claim 11 , wherein the thermal storage medium is a phase change material.
15. The battery cell of claim 14 , wherein the phase change material comprises a wax.
16. The battery cell of claim 14 , wherein the phase change material has a melting temperature range between 50 C and 60 C.
17. The battery cell of claim 11 , wherein the directional conductor comprises at least one of a metal bar and a heat pipe.
18. The battery cell of claim 11 , wherein:
the first layer consists of a silica aerogel enclosing the battery cell;
the second layer consists of graphite enclosing the battery cell; and
the third layer consists of a phase change material.
19. The battery cell of claim 11 , wherein the battery cell is housed in at least one of a power storage adapter and a portable information handling system.
20. The battery cell of claim 11 , wherein the first layer is bonded to a metal foil layer that covers a chemical barrier layer enclosing the battery cell.