Patent ID: 11942775
Assignee: SUNGROW POWER SUPPLY CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  Y | IPC B  H

Claim 16:
17. A high voltage battery cluster, comprising: N battery modules, and a switch box, wherein
the switch box comprises: a positive branch, a negative branch and an overcurrent protection circuit, and wherein
the overcurrent protection circuit comprises:
a first fusing module arranged in the positive branch of the switch box of the high voltage battery cluster; and
a second fusing module arranged in the negative branch of the switch box of the high voltage battery cluster, wherein
a withstand current-time curve of the first fusing module is different from a withstand current-time curve of the second fusing module,
the positive branch is arranged with a first direct current switch and the negative branch is arranged with a second direct current switch,
an input terminal of the positive branch serves as a positive input terminal of the switch box, and an output terminal of the positive branch serves as a positive output terminal of the switch box, and
an input terminal of the negative branch serves as a negative input terminal of the switch box, and an output terminal of the negative branch serves as a negative output terminal of the switch box,
the N battery modules are sequentially connected in series to form a series branch, wherein a positive electrode of the series branch is connected to the positive input terminal of the switch box, and a negative electrode of the series branch is connected to the negative input terminal of the switch box,
the positive output terminal of the switch box serves as a positive electrode of the high voltage battery cluster, and
the negative output terminal of the switch box serves as a negative electrode of the high voltage battery cluster,
wherein under a same withstanding current, fusing duration of the first fusing module is less than fusing duration of the first direct current switch, and fusing duration of the second fusing module is less than fusing duration of the second direct current switch in the switch box of the high voltage battery cluster.