Abstract: A composite positive-electrode material includes LMFP and LFP. The LMFP has a primary particle size in a range of 20 nm-200 nm. The LFP has a primary particle size in at least two ranges of: 100 nm-200 nm; 200 nm-350 nm; 350 nm-500 nm; and 500 nm-1000 nm. The primary particle size of the LFP is larger than the primary particle size of the LMFP.

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 are a security apparatus, a manufacturing method thereof, and a battery. A first score-line and a second score-line are disposed on the security apparatus. The first score-line and the second score-line are connected to form a closed line. The first score-line and the second score-line divide the security apparatus into an outer frame and a valve sheet. A thickness of the security apparatus at the second score-line is greater than a thickness of the security apparatus at the first score-line. The valve sheet is capable of being separated from the outer frame along the first score-line and being kept in connection with the outer frame at the second score-line.

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.

Abstract: The present invention discloses a lithium battery, which comprises of a positive electrode plate, a negative electrode current collector substrate, a separator and electrolyte between the positive electrode plate and the negative electrode current collector substrate. The positive electrode plate comprises a positive electrode collector, a positive electrode active material-containing positive electrode layer attached to the positive electrode collector and positive electrode tab welded to the positive electrode collector. The negative electrode current collector substrate comprises a negative electrode current collector and negative electrode tab welded to the negative electrode current collector. The negative electrode current collector substrate is a current collector substrate with 6˜60 ?m thickness having a planar or concavo-convex structure which is made from metal foil material or metal mesh with 6˜25 ?m thickness.

Abstract: The present invention discloses a lithium battery, which comprises of a positive electrode plate, a negative electrode current collector substrate, a separator and electrolyte between the positive electrode plate and the negative electrode current collector substrate. The positive electrode plate comprises a positive electrode collector, a positive electrode active material-containing positive electrode layer attached to the positive electrode collector and positive electrode tab welded to the positive electrode collector. The negative electrode current collector substrate comprises a negative electrode current collector and negative electrode tab welded to the negative electrode current collector. The negative electrode current collector substrate is a current collector substrate with 6˜60 ?m thickness having a planar or concavo-convex structure which is made from metal foil material or metal mesh with 6˜25 ?m thickness.