Battery pack

1. A battery pack, comprising:

at least one battery module;

a housing accommodating the at least one battery module therein;

a controller to control the at least one battery module;

a partition positioned between the controller and the at least one battery module; and

a connector at least partially passing through the partition, the connector electrically connecting the at least one battery module with the controller, the connector including an insert part, the insert part having a first insert part on a first side thereof and a second insert part on a second side thereof, an end of the first insert part within the connector being separated from an end of the second insert part within the connector,

wherein the first insert part extends through a first region of the connector, the first region of the connector facing the battery module and having a circular outer shape in a top view, and

wherein the second insert part extends through a second region of the connector, the second region of the connector facing away from the battery module and having a polygonal outer shape in a top view.

2. The battery pack as claimed in claim 1 , wherein the connector includes an insert part, the insert part having a first insert part in the first region and a second insert part in the second region.

3. The battery pack as claimed in claim 2 , wherein the connector further comprises a thread on an inner wall of the insert part.

4. The battery pack as claimed in claim 3 , wherein a terminal of the battery module is inserted into the first insert part of the connector.

5. The battery pack as claimed in claim 4 , wherein the terminal is coupled to the connector via the thread.

6. The battery pack as claimed in claim 2 , wherein the first insert part is in fluid communication with the second insert part.

7. The battery pack as claimed in claim 2 , wherein the connector is electrically connected to the controller via a busbar.

8. The battery pack as claimed in claim 7 , further comprising:

a through hole in the busbar, the through hole corresponding to the second insert part; and

a coupling member through the through hole, the coupling member being inserted into the second insert part to be coupled to the connector, a terminal of the battery module being inserted into the first insert part of the connector, an end of the coupling member within the connector being separated from an end of the terminal within the connector.

9. The battery pack as claimed in claim 8 , wherein the coupling member is fastened to the connector by a thread on an inner wall of the insert part.

10. A battery pack, comprising:

at least one battery module;

a housing accommodating the at least one battery module therein;

a controller to control the at least one battery module;

a partition positioned between the controller and the at least one battery module; and

a connector at least partially passing through the partition, the connector electrically connecting the at least one battery module with the controller,

wherein the partition includes a first opening and a sealing part within the first opening, the connector passing through a second opening in the sealing part, the sealing part being made of an elastic material,

wherein the connector includes a first region and a second region, the first region facing the battery module, and the second region facing away from the battery module,

wherein the first and second regions of the connector have different outer shapes in a top view, and

wherein the first region of the connector has a circular outer shape in the top view, and the second region of the connector has a polygonal outer shape in the top view.

11. The battery pack as claimed in claim 10 , wherein the sealing part hermetically seals a gap between a space accommodating the at least one battery module and a space accommodating the controller.

12. The battery pack as claimed in claim 1 , wherein the housing includes a body part and a cover part, the body part having a receiving part to receive the at least one battery module, and the cover part covering the body part and the partition on which the controller is disposed.

13. A battery pack, comprising:

at least one battery module;

a housing accommodating the at least one battery module therein;

a controller to control the at least one battery module;

a partition positioned between the controller and the at least one battery module;

a connector at least partially passing through the partition, the connector electrically connecting the at least one battery module with the controller,

wherein:

the connector includes a first region and a second region, the first region facing the battery module, and the second region facing away from the battery module and having a different cross-sectional shape than the first region; and

the first region has a circular cross-section in a top view, and the second region has a polygonal cross-section in a top view.

14. The battery pack as claimed in claim 13 , wherein the first region of the connector passes through the partition to be connected to the battery module.

15. The battery pack as claimed in claim 13 , wherein the second region has a hexagonal cross-section and a shape of a hexagonal pillar.

16. The battery pack as claimed in claim 1 , wherein the controller includes at least one of a battery control unit (BCU), a battery management system (BMS), and a battery disconnect unit (BDU).

17. The battery pack as claimed in claim 1 , wherein a width of the circular outer shape is larger than a width of the polygonal outer shape in the top view.

18. The battery pack as claimed in claim 1 , wherein sidewalls of the housing accommodate the at least one battery module and the controller, and the partition separates the housing into two completely separate spaces for the at least one battery module and the controller, respectively.

19. The battery pack as claimed in claim 10 , wherein the sealing part includes rubber.