Busbars and battery modules

Abstract

To widen the fuse's blowing range at a desired location on the fuse. [Solution] The positive busbar 30 includes a narrow region 31 that acts as a fuse, and a first notch 315 and a second notch 316 that, when an overcurrent flows through the narrow region 31, preferentially raise the temperature of one part of the narrow region 31 over the temperature of other parts of the narrow region 31.

Claims

1. A conductor that acts as a fuse, A structure that, when an overcurrent flows through the conductor, causes the temperature of one part of the conductor to rise preferentially over the temperature of another part of the conductor, A bus bar equipped with a bus bar.

2. The busbar according to claim 1, wherein the structure is such that the cross-sectional area of ​​the part of the conductor is smaller than the cross-sectional area of ​​the other part of the conductor.

3. The busbar according to claim 2, wherein a plurality of the above structures are provided on the conductor.

4. The busbar according to any one of claims 1 to 3, further comprising an insulating member that at least partially surrounds the conductor.

5. The bus bar according to claim 1, wherein the structure has a heat-conducting member that at least partially surrounds the portion of the conductor.

6. The conductor further comprises another conductor electrically connected to one end of the aforementioned conductor. The aforementioned conductor and the other conductor have edges that intersect each other, The busbar according to any one of claims 1 to 3, wherein the edge of the other conductor extends away from the edge of the conductor, toward a plane perpendicular to the direction connecting the one end and the other end of the conductor, toward the other end opposite to the one end of the conductor.

7. Battery cell and A busbar according to any one of claims 1 to 3, electrically connected to the battery cell, A battery module equipped with the following features.

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