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1. (WO2017003510) ÉLÉMENTS DE BATTERIE PARTIELLEMENT SUBMERGÉS POUR SYSTÈMES DE STOCKAGE D'ÉNERGIE DE VÉHICULE
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CLAIMS

What is claimed is:

1. A energy-storage system comprising:

a coolant section having a coolant circulated therein;

a non-coolant section having a fluid other than the coolant disposed therein; a plurality of battery cells having a coated portion and a non-coated portion, the coated portion being disposed in the coolant section, and the non-coated portion being disposed in the non-coolant section; and

a retainer disposed between the coolant section and the non-coolant section, the retainer holding the plurality of battery cells, the retainer forming a seal around the plurality of battery cells, the seal preventing the flow of coolant from the coolant section to the non-coolant section.

2. The energy-storage system of claim 1, wherein the coolant comprises ethylene glycol and water.

3. The energy-storage system of claim 1, wherein the coated portion is coated with a coating material having a high electrical resistance and a high thermal conductivity.

4. The energy-storage system of claim 3, wherein the coating material comprises at least one of aluminum oxide, diamond powder based materials, and boron nitride.

5. The energy-storage system of claim 4, wherein the retainer comprises an elastomer.

6. The energy-storage system of claim 4, wherein at least one side of the retainer is potted.

7. The energy-storage system of claim 1, wherein the battery cells are cylindrical lithium-ion battery cells.

8. The energy-storage system of claim 5 further comprising:

a current carrier electrically coupled to the plurality of battery cells, a cathode terminal of each of the battery cells being coupled to a respective positive contact of the current carrier, and an anode terminal of each of the battery cells being coupled to a respective negative contact of the current carrier.

9. The energy-storage system of claim 6, wherein the cathode terminal of each cell is laser welded to the respective positive contact of the current carrier and the anode terminal of each cell is laser welded to the respective negative contact of the current carrier.

10. The energy-storage system of claim 7, wherein the current carrier includes a plurality of fuses each electrically coupled to the respective positive contact.

11. An energy-storage system comprising:

a plurality of battery cells each comprising:

a coated portion being disposed in coolant, and

a non-coated portion being disposed in a fluid other than the coolant; and a retainer disposed approximately between the coated portion and the non-coated portion, the retainer holding the plurality of battery cells, the retainer forming a seal around the plurality of battery cells, the seal separating the coolant and the fluid.

12. The energy-storage system of claim 11, wherein the battery cells are cylindrical lithium-ion battery cells.

13. The energy-storage system of claim 11, wherein the coolant comprises ethylene glycol and water.

14. The energy-storage system of claim 11, wherein the coated portion is coated with a coating material having a high electrical resistance and a high thermal conductivity.

15. The energy-storage system of claim 14, wherein the coating material comprises at least one of aluminum oxide, diamond powder based materials, and boron nitride.

16. The energy-storage system of claim 15, wherein the retainer comprises an elastomer.

17. The energy-storage system of claim 15, wherein at least one side of the retainer is potted.

18. The energy-storage system of claim 17 further comprising:

a current carrier electrically coupled to the plurality of battery cells, a cathode terminal of each of the battery cells being coupled to a respective positive contact of the current carrier, and an anode terminal of each of the battery cells being coupled to a respective negative contact of the current carrier.

19. The energy-storage system of claim 18, wherein the cathode terminal of each cell is laser welded to the respective positive contact of the current carrier and the anode terminal of each cell is laser welded to the respective negative contact of the current carrier.

20. The energy-storage system of claim 19, wherein the current carrier includes a plurality of fuses each electrically coupled to the respective positive contact.