Cooling device

Abstract

This invention provides a cooling device for cooling a battery cell, comprising a first stack, a second stack, a cooling fluid, and a fusible material. The first stack is attached to the battery cell, wherein the first stack has a first engaging member and a first receiving member, and the first engaging member surrounds the first receiving member. The second stack is disposed on the first stack, wherein the second stack has a second engaging member and a second receiving member, and the second engaging member surrounds the second receiving member. The second engaging member engages with the first engaging member and together forms an opening, and the first and second receiving members together form a receiving space, which is in fluid communication with the opening. The cooling fluid is disposed in the receiving space. The fusible material fills the opening.

Claims

1. A cooling device for cooling a battery cell, comprising: A first stack plate is attached to the battery cell, wherein the first stack plate has a first engaging member and a first receiving member, and the first engaging member surrounds the first receiving member; a second stack plate is disposed on the first stack plate, wherein the second stack plate has a second engaging member and a second receiving member, and the second engaging member surrounds the second receiving member, wherein the second engaging member and the first engaging member engage to form an opening, the first receiving member and the second receiving member together form a receiving space, and the receiving space is in fluid communication with the opening; a cooling fluid is disposed in the receiving space; and a fusible material is filled in the opening, wherein when the temperature of the fusible material is higher than a melting temperature, the fusible material melts to allow the cooling fluid to flow out from the receiving space through the opening.

2. The cooling device as claimed in claim 1, wherein the melting temperature is greater than 70°C.

3. The cooling device as claimed in claim 1, wherein the first stack plate is in direct contact with the battery cell, and the second receiving member of the second stack plate protrudes away from the first stack plate.

4. The cooling device as claimed in claim 1, wherein the first stack plate further includes a first flow guiding member, and the second stack plate further includes a second flow guiding member, wherein the first flow guiding member and the second flow guiding member together form a flow guiding channel, and one end of the flow guiding channel is in fluid communication with the opening, and the other end is disposed on the valve port of the battery cell.

5. The cooling device as claimed in claim 4, wherein the fusible material is further filled in the flow channel.

6. The cooling device as claimed in claim 1, wherein the first stack and the second stack each have a plurality of bends, and the bends divide the receiving space into a plurality of separate sub-receiving spaces.

7. The cooling device as claimed in claim 6, wherein the battery cell comprises a plurality of cylindrical sub-cells, and the first stack and the second stack are bent about the bends and inserted between the cylindrical sub-cells.

8. The cooling device as claimed in claim 1, wherein the first stack and the second stack each have a clamping member, and the clamping members extend from a top surface of the cell to a side surface of the cell.

9. The cooling device as claimed in claim 1, wherein the first coupling member and the second coupling member each have a connecting member, and the connecting member is fixed to the battery cell by locking, bonding or snapping.

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