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: A method, a device and a medium for acquiring logging parameters are provided, wherein the logging parameters include gas-bearing porosities, and the method includes: acquiring a two-dimensional nuclear magnetic logging analysis graph; determining a gas-bearing region from the two-dimensional nuclear magnetic logging analysis graph; and summing contour values of the gas-bearing region as a gas-bearing porosity. The device for acquiring logging parameters includes a processor and a computer readable storage medium, wherein instructions are stored in the computer readable storage medium, and the processor executes the instructions to perform the foregoing method for acquiring logging parameters. The medium for acquiring logging parameters stores computer executable instructions, which are used for executing the foregoing method for acquiring logging parameters.