A battery module, comprising: two or more battery cells, each comprising an electrode terminal; a connecting member, wherein the electrode terminals of adjacent battery cells are connected by the connecting member; and a clamping-sampling member, comprising a wire connection portion for fixing a wire harness and a clamping portion, wherein one end of the clamping portion is connected with the wire connection portion and the other end of the clamping portion clamps the connecting member, the clamping portion comprises a first clamping part and a second clamping part, one end of the first clamping part is fixedly connected with one end of the second clamping part, while the other end of the first clamping part and the other end of the second clamping part form an opening of the clamping portion, and the one ends of the first clamping part and the second clamping part fixedly connected to each other are connected with the wire connection portion, the first clamping part is provided with a protrusion on a side surface of the opening facing the second clamping part, or the second clamping part is provided with a protrusion on a side surface of the opening facing the first clamping part; the sampling installation portion is provided with a connection hole, and the protrusion is matched with the connection hole, characterized in that, the first clamping part and the second clamping part are independently formed; the first clamping part is provided with a holding part for holding the second clamping part, or the second clamping part is provided with a holding part for holding the first clamping part, wherein the holding part is located at the one ends of the first clamping part and the second clamping part fixedly connected to each other. two or more battery cells, each comprising an electrode terminal; a connecting member, wherein the electrode terminals of adjacent battery cells are connected by the connecting member; and a clamping-sampling member, comprising a wire connection portion for fixing a wire harness and a clamping portion, wherein one end of the clamping portion is connected with the wire connection portion and the other end of the clamping portion clamps the connecting member, the clamping portion comprises a first clamping part and a second clamping part, one end of the first clamping part is fixedly connected with one end of the second clamping part, while the other end of the first clamping part and the other end of the second clamping part form an opening of the clamping portion, and the one ends of the first clamping part and the second clamping part fixedly connected to each other are connected with the wire connection portion, the first clamping part is provided with a protrusion on a side surface of the opening facing the second clamping part, or the second clamping part is provided with a protrusion on a side surface of the opening facing the first clamping part; the sampling installation portion is provided with a connection hole, and the protrusion is matched with the connection hole, characterized in that, the first clamping part and the second clamping part are independently formed; the first clamping part is provided with a holding part for holding the second clamping part, or the second clamping part is provided with a holding part for holding the first clamping part, wherein the holding part is located at the one ends of the first clamping part and the second clamping part fixedly connected to each other.