| CPC H01M 50/291 (2021.01) [H01M 10/482 (2013.01); H01M 50/204 (2021.01)] | 8 Claims |

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1. A battery pack, comprising:
a battery set, including a plurality of battery units, wherein the battery units are disposed side by side in a column direction; in the column direction, one of the battery units located at one end of the battery set has an expansion portion, and the expansion portion is formed in a center region of an end surface of the battery set in the column direction;
a battery monitoring unit, disposed on the end surface of the battery set, wherein in the column direction, the battery monitoring unit is staggered from the expansion portion;
a case body, having a sealed chamber, wherein the battery set and the battery monitoring unit are disposed in the sealed chamber; and
an installation bracket, disposed in the sealed chamber and connected to the case body, wherein the battery monitoring unit is connected to the installation bracket,
wherein the case body further comprises a partition wall, the partition wall extends in a row direction and divides the sealed chamber into a first accommodating space and a second accommodating space, the battery set is accommodated in the first accommodating space, and the battery monitoring unit is accommodated in the second accommodating space,
the installation bracket is connected to the partition wall.
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