Battery device and battery pack

Abstract

Battery device, characterized in that it comprises: a main wiring harness (1) having a plurality of wires provided therein, the wires being electrically connected to a battery; an output terminal (2) provided at at least one end of the main wiring harness (1), the output terminal (2) being directly electrically connected to a battery management arrangement; an adapter circuit board provided between the main wiring harness (1) and the output terminal (2), the adapter circuit board having a signal input terminal electrically connected to the main wiring harness (1) and a signal output terminal electrically connected to the output terminal (2); an output branch (3) is provided between the adapter circuit board and the output terminal (2), the ratio of the thickness of the adapter circuit board to the length of the output branch (3) along its extension direction being in the range of 0.003 to 0.06.

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