ADHESIVE MEMBER AND ELECTROCHEMICAL DEVICE

Disclosed in the present application are an adhesive member and an electrochemical device. The adhesive member comprises a first side, a second side, a third side, a first boundary line, and a second boundary line. The first side is opposite the second side, the third side comprises a first end and a second end opposite the first end, and the first end is connected to the second side. Two ends of the second boundary line are respectively connected to the first boundary line and the first side, and two ends of the first boundary line are respectively connected to the second boundary line and the second end, wherein an included angle R1 is formed between a connection line between the two ends of the first boundary line and a connection line between the two ends of the second boundary line, and 5° ≤ R1 ≤ 235°. By means of the included angle R1 formed between the first boundary line and the second boundary line, when the adhesive member is bonded to a cell, a crease corresponding to a side edge of the cell is located within the range of the first boundary line and the second boundary line, thereby reducing the risk of sharp corners generated when the adhesive member is pressed down on a surface of the cell, reducing the influence on the outer contour size of the cell, and further reducing the production cost.