Abstract: A self-heating control method and a self-heating control system for a rechargeable battery are disclosed. The rechargeable battery includes a battery core. A separator is provided between a positive electrode and a negative electrode of the battery core. A reference electrode is correspondingly provided at the separator. A surface electrode is correspondingly provided on the negative electrode surface of the battery core. The method includes: detecting the potential difference between the reference electrode and the surface electrode, generating a charging current adjustment instruction according to the potential difference between the reference electrode and the surface electrode, and adjusting the charging current of the rechargeable battery according to the charging current adjustment instruction during the self-heating process of the rechargeable battery.

Abstract: A battery pack and a vehicle are provided. The battery pack is configured to provide electric energy required by the vehicle under different operating conditions. The battery pack includes a task manager, a first battery unit and a second battery unit. The first battery unit and the second battery unit respectively respond to a different operating state of a load and provide the electric energy required under the control of the task manager.

Abstract: A current collector includes: a first polymer layer; a metal layer, the metal layer being disposed on a side of the first polymer layer; and a second polymer layer, the second polymer layer being disposed on a side of the metal layer far away from the first polymer layer; and in a direction from the first polymer layer to the second polymer layer, the current collector having a number of through-holes that penetrate the current collector.

Abstract: A dry battery electrode plate includes: a metal current collector and a self-supporting electrode film. The metal current collector is provided with pores. The self-supporting electrode film includes a first electrode film and a second electrode film. The first electrode film is arranged on one side of the metal current collector. The second electrode film is arranged on the other side of the metal current collector facing away from the first electrode film. The first electrode film and the second electrode film are configured to be press-fit connected by an external force. The first electrode film and the second electrode film are attached to the metal current collector. The first electrode film and the second electrode film are connected to each other at positions corresponding to the pores.

Abstract: The present disclosure provides a negative electrode material, a preparation method thereof, and an all-solid-state lithium battery. The negative electrode material includes a core and an amorphous lithium-silicon alloy layer cladding the core. The core includes a glassy solid electrolyte and amorphous lithium-silicon alloy particles dispersed in the glassy solid electrolyte. The material of the amorphous lithium-silicon alloy particles is LixSi, 0<x?4.4. The material of the amorphous lithium-silicon alloy layer is LiySi, 0<y?4.4.

Abstract: An electronic device includes a housing, a functional assembly, and a battery. An accommodating space is formed in the housing. The functional assembly includes a functional component, where the functional assembly is mounted in the housing and occupies a part of the accommodating space. The battery includes a main body portion and a protruding portion and an avoidance portion formed on the main body portion, the main body portion and the protruding portion occupy at least a part of the remaining space of the accommodating space, and the avoidance portion is arranged corresponding to the functional component and is configured to avoid the functional component.

Abstract: The present disclosure provides a negative electrode material and a preparation method thereof, a negative electrode and an all-solid-state lithium-ion battery. The negative electrode material includes a negative electrode active substance and a coating layer on the surface of the negative electrode active substance, the coating layer including a polymer electrolyte and a sulfide solid electrolyte.

Abstract: A solid electrolyte material and a method for preparing the same, a solid electrolyte and a battery are provided. The solid electrolyte material includes: at least one of crystalline inorganic solid electrolyte having a formula of Li10±1AB2X12 (I); and at least one of amorphous inorganic solid electrolyte having a formula of yLi2X?-(100-y)P2X?5 (II).

Abstract: A solid electrolyte contains an internal component and an external component coated on a surface of the internal component. The internal component is represented by a formula Li1+xMxTi2?x(PO4)3, M is one or more elements selected from a group consisting of Al, La, Cr, Ga, Y, and In, and 0.05?x?0.4. The external component has an ionic conductivity of no less than 10?6 S/cm, an electrochemical window of the solid electrolyte is no less than 5V. A method of preparing the solid electrolyte and a lithium ion battery including the solid electrolyte are also provided.

Abstract: A solid electrolyte contains an internal component and an external component coated on a surface of the internal component. The internal component is represented by a formula Li1+xMxZr2?x(PO4)3, M is one or more elements selected from a group consisting of Al, La, Cr, Ga, Y, and In, and 0.05?x?0.4. The external component contains a plastic deformable material and has a conductivity of about 10?7 S/cm to about 10?5S/cm. A method of preparing the solid electrolyte and a lithium ion battery including the solid electrolyte are also provided.

Abstract: A solid electrolyte contains an internal component and an external component coated on a surface of the internal component. The internal component is represented by a formula Li1+xMxZr2?x(PO4)3, M is one or more elements selected from a group consisting of Al, La, Cr, Ga, Y, and In, and 0.05?x?0.4. The external component contains a plastic deformable material and has a conductivity of about 10?7 S/cm to about 10?5S/cm. A method of preparing the solid electrolyte and a lithium ion battery including the solid electrolyte are also provided.

Abstract: A negative active material, a method for preparing the negative active material and a lithium ion battery comprising the same are provided. The negative active material may comprise: a core, an intermediate layer consisting of a first material and an outmost layer consisting of a second material, which is coated on a surface of the intermediate layer. The first material may be at least one selected from the group consisting of the elements that form alloys with lithium, and the second material may be at least one selected from the group consisting of transition metal oxides, transition metal nitrides and transition metal sulfides.

Abstract: A negative active material, a method of preparing the negative active material and a lithium ion battery comprising the negative active material are provided. The negative active material may comprise: a core (1) composed of a carbon material; and a plurality of composite materials (2) attached to a surface of the core (1), each of which may comprise a first material (21) and a second material (22) coated on the first material (21), in which the first material (21) may be at least one selected from the elements that may form an alloy with lithium, and the second material (22) may be at least one selected from the group consisting of transition metal oxides, transition metal nitrides and transition metal sulfides.

Abstract: A negative active material, a method of preparing the negative active material and a lithium ion battery comprising the negative active material are provided. The negative active material may comprise: a core (1) composed of a carbon material; and a plurality of composite materials (2) attached to a surface of the core (1), each of which may comprise a first material (21) and a second material (22) coated on the first material (21), in which the first material (21) may be at least one selected from the elements that may form an alloy with lithium, and the second material (22) may be at least one selected from the group consisting of transition metal oxides, transition metal nitrides and transition metal sulfides.

Abstract: A negative active material, a method for preparing the negative active material and a lithium ion battery comprising the same are provided. The negative active material may comprise: a core, an intermediate layer consisting of a first material and an outmost layer consisting of a second material, which is coated on a surface of the intermediate layer. The first material may be at least one selected from the group consisting of the elements that form alloys with lithium, and the second material may be at least one selected from the group consisting of transition metal oxides, transition metal nitrides and transition metal sulfides.