Battery module

Abstract

A battery module according to one embodiment of the present invention includes a frame that provides internal space, comprising a bottom plate and a top plate facing the bottom plate; a plurality of battery cells located on the bottom plate and stacked in one direction; and an elastic pad that is compressed between the plurality of battery cells and the top plate.

Claims

1. A frame comprising a bottom plate and a top plate facing the bottom plate, providing space inside, A plurality of battery cells located on the bottom plate and stacked in one direction, A battery module comprising the plurality of battery cells and an elastic pad that is compressed between the top plate.

2. The battery module according to claim 1, wherein the top plate is provided with a first vent hole for exposing the elastic pad.

3. The battery module according to claim 2, wherein the elastic pad comprises a separation wire.

4. The battery module according to claim 3, wherein the first vent hole exposes the separation wire.

5. The battery module according to claim 4, wherein the separation line is configured to expose a portion of the plurality of battery cells when a thermal event occurs.

6. Multiple first vent holes are provided, The battery module according to claim 3, wherein the separation lines are formed in multiple locations so as to correspond one-to-one with the multiple first vent holes.

7. The battery module according to claim 1, wherein the elastic pad covers the plurality of battery cells overall.

8. The battery module according to claim 1, wherein the elastic pad comprises a polyurethane material.

9. The battery module further includes a fireproof cover, The battery module according to claim 1, wherein the fireproof cover is coupled, fastened, attached, fixed, or assembled to the upper surface of the top plate.

10. The battery module according to claim 9, wherein the fireproof cover includes a second vent hole.

11. The top plate is provided with a first vent hole that exposes the elastic pad, The battery module according to claim 10, wherein the first vent hole and the second vent hole are formed to correspond to each other on a one-to-one basis.

12. The elastic pad includes a separation line, The battery module according to claim 11, wherein the separation line, the first vent hole, and the second vent hole are aligned in the vertical direction.

13. The battery module according to claim 12, wherein when a thermal event occurs, the vent gas separates the separation wire and is discharged to the outside of the battery module through the first vent hole and the second vent hole.

14. The battery module according to claim 1, wherein a heat transfer member is provided between the bottom plate and the plurality of battery cells.

15. A battery pack comprising the battery module described in claim 1.

16. An automobile comprising the battery module described in claim 1.

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