Abstract: Provided is a method for manufacturing a vent structure. The vent structure comprises a vent, and the method includes: providing a first notch without intersection on the surface of the vent with a first depth; and providing a second notch with a second depth on part of the first notch in the direction of the first depth.

Abstract: The present application relates to the technical field of power batteries, and specifically discloses a power battery cover and a power battery. The power battery cover includes a copper-aluminum composite terminal, a top cover, a seal, an upper plastic insulator and a lower plastic insulator. The copper-aluminum composite terminal is disposed to pass through the top cover, the upper plastic insulator and the lower plastic insulator. The copper-aluminum composite terminal includes a copper base body part and an aluminum base body part connected to each other, and a composite connection surface is formed between the aluminum base body part and the copper base body part, and sealed and wrapped by the seal.

Abstract: Provided is a riveted battery cover which relates to the technical field of battery cover assembly. The riveted battery cover includes a terminal and includes a riveting block, an upper plastic insulator, a top cover, and a bottom insulator which are successively stacked. A first step hole and a second step hole are coaxially disposed in the riveting block. A stamped end of the terminal successively passes through the bottom insulator, the top cover, the upper plastic insulator, the first step hole, and the second step hole. A part of the stamped end of the terminal protruding from the first step hole is stamped to form a protrusion located in the second step hole.

Abstract: A method for manufacturing an aluminum case of a battery includes: attaching an insulating layer to at least one surface of the plate body with an adhesive layer, wherein the adhesive layer is disposed between the insulating layer and the plate body; stamping, before the adhesive layer is cured, the plate body coated with the insulating layer to form the aluminum case in a predetermined shape, wherein during the stamping of the plate body, the insulating layer is movable relative to the plate body since the adhesive layer is not cured; and curing the adhesive layer after the stamping of the plate body is completed so that the insulating layer is fixed to the plate body, thereby avoiding detachment of the insulating layer and the plate body on the aluminum case.

Abstract: Provided is a method for manufacturing a vent structure. The vent structure comprises a vent, and the method includes: providing a first notch without intersection on the surface of the vent with a first depth; and providing a second notch with a second depth on part of the first notch in the direction of the first depth.

Abstract: Provided is an aluminum case, including an aluminum plate, where the aluminum plate includes a plate body, and at least one surface of the plate body is attached with an insulating layer, so that at least one of an inner surface and an outer surface of the molded aluminum case has the insulating layer.

Abstract: Disclosed is a biogas residue-based in situ and ectopic coupled detoxification method for hexavalent chromium site and soil remediation agent. The method is applied to chromium-containing soil by formulating biogas residue, a carbon source and a sulfate into said soil remediation agent. Special construction and maintenance methods are adopted to achieve effective reduction of hexavalent chromium in deep contaminated soil. Therefore, the biogas residue-based in situ and ectopic coupled detoxification method for hexavalent chromium-containing sites cannot only be used to remediate chromium-containing sites deep in depth at a low cost and high efficiency, but also achieve recycled utilization of waste by treating waste with one another, thereby possessing significant value in promotion and practice.

Abstract: Disclosed is a biogas residue-based in situ and ectopic coupled detoxification method for hexavalent chromium site and soil remediation agent. The method is applied to chromium-containing soil by formulating biogas residue, a carbon source and a sulfate into said soil remediation agent. Special construction and maintenance methods are adopted to achieve effective reduction of hexavalent chromium in deep contaminated soil. Therefore, the biogas residue-based in situ and ectopic coupled detoxification method for hexavalent chromium-containing sites cannot only be used to remediate chromium-containing sites deep in depth at a low cost and high efficiency, but also achieve recycled utilization of waste by treating waste with one another, thereby possessing significant value in promotion and practice.