Abstract: This application provides a semi-solid state lithium battery, including: an electrolyte solution; a separator disposed in the electrolyte solution; and a positive electrode plate and a negative electrode plate that are respectively disposed on two sides of the separator, where the positive electrode plate includes a positive current collector and a positive active layer disposed on the positive current collector, the positive active layer is doped with 0.1 wt %˜5 wt % of oxide electrolyte, and D50 of the oxide electrolyte is 0.05 ?m˜1.2 ?m; and the negative electrode plate includes a negative current collector and a negative active layer disposed on the negative current collector. In this application, the positive active layer is doped with the oxide electrolyte, to reduce a lowest electrolyte solution retention coefficient of the battery and reduce an expansion rate of the battery after high-temperature cycle 1000 cls.

Abstract: This application provides a battery, including a negative electrode plate and a separator. The negative electrode plate includes a negative active substance layer and a functional layer that are stacked. The functional layer includes Mg2+, where some of the Mg2+ is embedded in the negative active substance layer. The separator includes a base film and a coating layer located on a surface of the base film, and the coating layer bonds the base film and the functional layer. The coating layer includes a polymer material. The polymer material is coordination-crosslinked with at least some of the remaining Mg2+ in the functional layer. The polymer material in the coating layer performs a coordination crosslinking reaction with the Mg2+ in the functional layer, so as to effectively increase binding strength between the negative electrode plate and the separator, thereby helping prevent deformation of the battery during a cycle process.

Abstract: A battery charging and discharging management method. When the charging and discharging management method is implemented, an electronic device may set a lower-limit voltage of a battery to a voltage higher than a theoretical lower-limit voltage, and continuously increase the lower-limit voltage as a battery cycle passes, thereby reducing a charging/discharging volume change rate of a silicon anode as much as possible, and extending a battery life.

Abstract: The present application provides a battery cell including a first electrode, a second electrode, and a separator disposed therebetween, wherein the separator comprises an extension portion beyond the first electrode and the second electrode at an end portion of the battery cell. The battery cell further includes an adhesive layer including a body and a connecting portion extending from the body. The body is adhered to the extension portion, and the connecting portion is adhered to the extension portion. It is an object of the present application to provide a battery cell that effectively eliminates invalidation resulted from short circuit caused by the separator shrinkage. The present application further provides an electrochemical device and a method of manufacturing thereof.

Abstract: An electrode assembly including a first electrode plate, a second electrode plate and a separator between the first electrode plate and the second electrode plate. The separator includes an extension portion extending to the outside of the first electrode plate and the second electrode plate in a length direction of the electrode assembly. The extension portion is provided with a glue layer including a first bonding portion extending in a width direction of the electrode assembly. The first bonding portion is parallel to the width direction.

Abstract: An electrode assembly including a first electrode plate, a second electrode plate and a separator between the first electrode plate and the second electrode plate. The separator includes an extension portion extending to the outside of the first electrode plate and the second electrode plate in a length direction of the electrode assembly. The extension portion is provided with a glue layer including a first bonding portion extending in a width direction of the electrode assembly. The first bonding portion is parallel to the width direction.

Abstract: Embodiments of the present application provide an electrode assembly including a first electrode plate, a second electrode plate and a separator between the first electrode plate and the second electrode plate. The separator includes an extension portion extending to the outside of the first electrode plate and the second electrode plate in a length direction of the electrode assembly. The extension portion is provided with a glue layer including a first bonding portion extending in a width direction of the electrode assembly. The first bonding portion is parallel to the width direction. Embodiments of the present application further provide a battery. The electrode assembly and battery provided in the present application will at least reduce the risk of short circuit of the electrode assembly.

Abstract: Embodiments of the present application provide an electrode assembly including a first electrode plate, a second electrode plate and a separator between the first electrode plate and the second electrode plate. The separator includes an extension portion extending to the outside of the first electrode plate and the second electrode plate in a length direction of the electrode assembly. The extension portion is provided with a glue layer including a first bonding portion extending in a width direction of the electrode assembly. The first bonding portion is parallel to the width direction. Embodiments of the present application further provide a battery. The electrode assembly and battery provided in the present application will at least reduce the risk of short circuit of the electrode assembly.

Abstract: The present application provides a battery cell including a first electrode, a second electrode, and a separator disposed therebetween, wherein the separator comprises an extension portion beyond the first electrode and the second electrode at an end portion of the battery cell. The battery cell further includes an adhesive layer including a body and a connecting portion extending from the body. The body is adhered to the extension portion, and the connecting portion is adhered to the extension portion. It is an object of the present application to provide a battery cell that effectively eliminates invalidation resulted from short circuit caused by the separator shrinkage. The present application further provides an electrochemical device and a method of manufacturing thereof.

Abstract: The present application provides an electrode assembly comprising a body and a separator extension formed by a separator extending from the body, wherein the separator extension includes a first extension and a second extension, the second extension including a first stack portion and a second stack portion, the second stack portion being folded over onto the first stack portion. The present application further provides a battery and a packaging method of separator of the electrode assembly. The purpose of the present application is to provide an electrode assembly, a battery and a packaging method of electrode assembly separator, which can solve the problem of separator shrinkage during the falling process.