Abstract: The disclosure belongs to the technical field of batteries, and particularly relates to a current collector component, which includes a first current collector piece, a second current collector piece, and an insulator, the first current collector piece and the second current collector piece being in insulated connection through an insulator; and the second current collector piece includes a body part, a welding part, and a connecting part, the body part being connected to the insulator and provided with a first electrical connection surface, the connecting part being connected between the body part and the welding part, and the connecting part being bendable, so that the welding part is located on the side, far away from the first electrical connection surface, of the body part. The structure of the disclosure may increase the utilization rate of the internal space of a housing.

Abstract: The disclosure belongs to the technical field of batteries, and particularly relates to a current collector component, which includes a first current collector piece, a second current collector piece, and an insulator, the first current collector piece and the second current collector piece being in insulated connection through an insulator; the second current collector piece includes a body part and a welding part, the body part and the welding part forming an included angle, and a welding surface of the welding part and a surface of the body part forming an included angle. The structure of the disclosure has high welding safety, may increase the utilization rate of the internal space of a housing, and may prevent the damage to a cell caused by laser penetration welding. In addition, the disclosure further discloses a secondary battery.

Abstract: The present application discloses an array substrate including a base substrate, a first signal line layer on the base substrate having a plurality of first signal lines, an insulating layer on a side of the first signal line layer distal to the base substrate, a second signal line layer having a plurality of second signal lines on a side of the insulating layer distal to the first signal line layer; the plurality of second signal lines crossing over the plurality of first signal lines defining a plurality of subpixels, a passivation layer on a side of the second signal line layer distal to the insulating layer, and a test electrode layer having a plurality of test electrodes on a side of the passivation layer distal to the second signal line layer; each of the test electrode electrically connected to one of a first signal line and a second signal line.