Battery packs and automobiles containing them

Abstract

A battery pack and an automobile including the same are disclosed. A battery pack according to one embodiment of the present invention includes a plurality of battery modules in which a plurality of battery cells are stacked, a pack case in which the plurality of battery modules are housed, and a vent cover coupled to the pack case having an exhaust path through which flames or gases generated in the battery cells are discharged.

Claims

1. Multiple battery modules, each consisting of multiple battery cells stacked on top of each other, A pack case in which the aforementioned multiple battery modules are housed, A battery pack comprising a vent cover coupled to the pack case, wherein a discharge path is formed for the discharge of flames or gases generated in the battery cells.

2. The aforementioned pack case includes an upper frame, The upper frame has a movable hole through which flames or gases can move. The battery pack according to claim 1, characterized in that the vent cover is coupled to the upper part of the upper frame.

3. The battery pack according to claim 2, characterized in that the inside of the vent cover is hollow to allow flames or gases to move.

4. The vent cover has connecting holes formed in it. The battery pack according to claim 3, characterized in that the battery module is connected to the connecting hole.

5. The battery module includes the upper module case. The battery pack according to claim 1, characterized in that the upper module case has an exhaust hole formed therein through which flames or gases are discharged, and the exhaust hole is connected to the exhaust path of the vent cover.

6. The battery pack according to claim 5, characterized in that it includes a connecting portion that connects the discharge hole and the discharge path.

7. The battery pack according to claim 6, characterized in that the connecting portion is made of a gasket or sealing member to prevent flame or gas leakage.

8. The battery pack according to claim 1, characterized in that it includes a backflow prevention member provided in the vent cover to prevent backflow of flames or gases.

9. The battery pack according to claim 8, characterized in that the backflow prevention member is configured to rotate by a flame or gas.

10. The aforementioned backflow prevention member is A pivot shaft connected to the upper surface of the vent cover, The battery pack according to claim 9, further comprising a first opening / closing portion that is rotatably connected to the pivot shaft and contacts the lower surface of the vent cover.

11. The aforementioned backflow prevention member is A projection protruding from the vent cover, The elastic part that is bonded, The battery pack according to claim 8, further comprising a second opening / closing part coupled to the elastic part.

12. The aforementioned protrusion is A first projection protruding from the upper surface of the vent cover, The battery pack according to claim 11, further comprising: a second projection that protrudes from the lower surface of the vent cover at a position corresponding to the position of the first projection and is spaced apart from the first projection at a predetermined distance.

13. The elastic portion is A first elastic portion coupled to the first projection, The battery pack according to claim 12, further comprising a second elastic portion coupled to the second projection.

14. The battery pack according to claim 1, characterized in that it includes a path expansion member provided in the vent cover for expanding the flame or gas exhaust path.

15. The aforementioned path expansion member is At least one first projection protruding from the first portion of the vent cover, It includes at least one second projection protruding from the second portion of the vent cover, The battery pack according to claim 14, characterized in that the first protrusion and the second protrusion are arranged alternately.

16. The aforementioned path expansion member is At least one first projection protruding from the first portion of the vent cover, It includes at least one second projection protruding from the second portion of the vent cover, The first projection is positioned so as to be inclined toward the second portion. The battery pack according to claim 14, characterized in that the second protrusion is arranged to be inclined toward the first portion.

17. An automobile comprising at least one battery pack according to any one of claims 1 to 16.

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