Battery module including removable fuse assembly and battery pack including the same
A battery module includes: a plurality of battery cells; a module case configured to accommodate the plurality of battery cells; an electrode terminal provided outside the module case; and a fuse assembly provided to be attachable to or detachable from an outer side of the module case, and including a busbar having one end connected to the electrode terminal and the other end connected to an external cable and configured to break when an overcurrent occurs, and a fuse case configured to accommodate the busbar.
1 . A battery module comprising:
a plurality of battery cells;
a module case configured to accommodate the plurality of battery cells;
an electrode terminal provided outside the module case; and
a fuse assembly provided to be attachable to or detachable from an outer side of the module case, the fuse assembly comprising a plate-shaped busbar configured to break when an overcurrent occurs and a fuse case configured to accommodate the busbar,
wherein the busbar has a first end configured to be directly connected to the electrode terminal through a bottom portion of the fuse case and a second end configured to be directly connected to an external cable through the bottom portion of the fuse case.
2 . The battery module of claim 1 , wherein the electrode terminal has a bolt or nut shape, and
wherein the busbar comprises:
a module assembly portion coupled to the electrode terminal;
a cable assembly portion configured to be coupled to the external cable; and
a bridge portion between the module assembly portion and the cable assembly portion and provided to be fused when an overcurrent flows.
3 . The battery module of claim 2 , wherein a width of the bridge portion is less than a width of the module assembly portion and a width of the cable assembly portion.
4 . The battery module of claim 3 , wherein the bridge portion comprises at least one notch.
5 . The battery module of claim 2 , wherein the fuse case comprises:
a case body including a wall body portion surrounding an outer perimeter of the busbar and having an upper portion and an opened lower portion, wherein the busbar at least partially closes the opened lower portion; and
a case cover covering the upper portion of the case body.
6 . The battery module of claim 5 , wherein the case body comprises:
at least one lower support body extending from a lower end of the wall body portion to support a lower surface of the busbar; and
at least one upper support body protruding from an inner surface of the wall body portion to contact an upper surface of the busbar.
7 . The battery module of claim 6 , wherein the upper support body comprises an inclined surface inclined towards an internal direction of the case body.
8 . The battery module of claim 5 , wherein the case body comprises a reinforcing plate configured to cover one region of the bridge portion below the bridge portion.
9 . The battery module of claim 5 , wherein the case body comprises a mounting support protruding in an L-shape in an internal direction from an inner surface of the wall body portion, and
wherein the busbar further comprises a bending pin bent to be arranged in contact on the mounting support.
10 . The battery module of claim 5 , wherein the case cover comprises:
a first cover configured to cover an upper portion of the module assembly portion; and
a second cover configured to cover an upper portion of the cable assembly portion, the second cover independently movable of the first cover.
11 . The battery module of claim 10 , wherein the first cover or the second cover comprises a blocking plate inserted and arranged in perpendicular to an internal space of the case body, and
wherein the module assembly portion and the cable assembly portion are isolated from each other by the blocking plate.
12 . The battery module of claim 10 , wherein the case body comprises a dummy block protruding in an external direction from one side of the wall body portion and including an insert nut therein, and
wherein the first cover comprises a dummy cover arranged on the dummy block and including a bushing vertically matched to the insert nut.
13 . The battery module of claim 12 , wherein the wall body portion comprises, as a region where the dummy block is located, a strength reinforcing wall region having a thickness greater than a thickness of a remainder of the wall body portion.
14 . The battery module of claim 13 , wherein the strength reinforcing wall region comprises:
an outer wall body region;
an inner wall body region; and
a plurality of ribs connected to the outer wall body region and the inner wall body region.
15 . A battery pack comprising the battery module according to claim 1 .