Abstract: Provided are a battery top cover and a battery. The battery top cover includes a cover plate, a pressing plate, an insulation assembly and a pole. The cover plate is provided with a mounting hole penetrating through two sides in a thickness direction of the cover plate. The pole is disposed in the mounting hole and is spaced from the cover plate. The pole includes a pole body, a middle of a first end of the pole body is provided with a first mounting groove configured to mount a connection member, and a circumferential portion of the first end of the pole body is provided with a first flange. A free end of the first flange extends towards a direction facing away from an axis of the mounting hole. The pressing plate is sleeved on an end of the pole body facing away from the first flange.

Abstract: Provided sealing assembly and lithium ion battery. The sealing assembly includes a cover plate, conductors, and sealing mechanisms. The cover plate provided with fixing members for fixing electrode posts. The fixing members and the cover plate integrally stamped and formed. Each fixing member includes an enclosure plate and a limiting plate. The cover plate further provided with mounting holes for installing the electrode posts. Each enclosure plate located on first side surface of the cover plate and surrounds a periphery of a respective mounting hole. The limiting plate formed by extending an end of respective enclosure plate facing away from the cover plate to center of a respective mounting hole. Each conductor connected between respective fixing member and respective electrode post through injection-molded. The sealing mechanism fixed on second side surface of the cover plate and configured to seal gaps between the cover plate and the electrode posts.