Battery pack

Abstract

In a battery pack comprising a battery stack and a case, the battery stack is adequately protected from overhead load input while ensuring sufficient mounting space for the battery stack. [Solution] The battery pack 10 comprises a plurality of battery stacks 30, a voltage monitoring device 40, a bracket 50, and a case 20. The case 20 comprises an upper case and a lower case 21. The lower case 21 comprises a lower case body 23 and a cross member 24. The plurality of battery stacks 30 are arranged to avoid the cross member 24 when viewed from above. The bracket 50 is fixed to the upper surface portion 24A of the cross member 24, and the upper surface 50A of the bracket 50 is located above the upper surface 31 of the battery stack 30.

Claims

1. Multiple battery stacks, Voltage monitoring device, A bracket supporting the voltage monitoring device, A case housing the aforementioned multiple battery stacks, the voltage monitoring device, and the bracket, Equipped with, The aforementioned case comprises an upper case and a lower case, The lower case comprises a lower case body and a cross member, The plurality of battery stacks are arranged so as to avoid the cross member when viewed from above. The bracket is fixed to the upper surface of the cross member, The upper surface of the bracket is located above the upper surface of the battery stack. Battery pack.

2. The aforementioned bracket is made of metal. The bracket and the voltage monitoring device are joined by welding. The bracket and the cross member are fastened together by a fastening member. The battery pack according to claim 1.

3. When the directions perpendicular to the vertical direction of the vehicle are defined as the first and second directions, The cross member extends along the first direction, The upper support portion that constitutes the upper surface of the bracket is One side upper support part, The other side upper support portion, Equipped with, The aforementioned upper support portion on one side and the aforementioned upper support portion on the other side are located at separate positions in the second direction. The battery pack according to claim 1.

4. When the directions perpendicular to the vertical direction of the vehicle are defined as the first and second directions, The cross member extends along the first direction, The number of the aforementioned battery stacks arranged in the first direction is 2. The battery pack includes an intermediate mount whose upper surface is located above the upper surface of the battery stack. The bracket or intermediate mount is positioned within the case at a location offset in the second direction from the second direction center. The battery pack according to claim 1.

5. When the directions perpendicular to the vertical direction of the vehicle are defined as the first and second directions, The cross member extends along the first direction, The number of the aforementioned battery stacks arranged in the first direction is 2. The bracket is positioned within the case at a location offset in the second direction from the second direction center. The battery pack according to claim 1.

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