Abstract: The present disclosure provides a lithium-ion battery, the lithium-ion battery comprises a positive electrode plate, a negative electrode plate, a separator and an electrolyte, the positive active material comprises a layered lithium-containing compound, the negative active material comprises graphite, the positive film and the negative film satisfy a relationship 0.3?(OIc×PDc)/(OIa×PDa)?20.0. The present disclosure can make the lithium-ion battery have smaller swelling and higher charging capability, and also make the lithium-ion battery have excellent cycle life and excellent safety performance during the long-term fast charging process.

Abstract: A top cap assembly includes a top cap plate, a mounting piece, and a protection film. The top cap plate includes an inner side and an outer side disposed opposite to each other along a thickness direction of the top cap plate, the inner side and the outer side are spaced apart from each other to form a receptacle in between, and the receptacle communicates with an outside space. The mounting piece is disposed protrusively in the receptacle and comprising a fixed end and a free end disposed opposite to each other. The fixed end is disposed on a wall of the receptacle, and the free end extends along the thickness direction of the top cap plate and is spaced apart from the wall of the receptacle to form a threading clearance. One end of the protection film is attached to the mounting piece through the threading clearance.

Abstract: A battery cell, a battery and an electricity consuming apparatus are provided. The battery cell includes a cap assembly and an electrode assembly, the cap assembly includes a cap plate and an isolation member, and the isolation member is disposed on one side of the cap plate; the electrode assembly is disposed on a side of the isolation member facing away from the cap plate, the electrode assembly includes an electrode body and tabs protruding from the electrode body, and a protrusion connected with the electrode body is connected on a peripheral side of at least one of the tabs; wherein a clearance groove is provided on a surface of the isolation member facing away from the cap plate, and is configured to accommodate at least a portion of the protrusion.

Abstract: A top cap assembly includes a top cap plate, a mounting piece, and a protection film. The top cap plate includes an inner side and an outer side disposed opposite to each other along a thickness direction of the top cap plate, the inner side and the outer side are spaced apart from each other to form a receptacle in between, and the receptacle communicates with an outside space. The mounting piece is disposed protrusively in the receptacle and comprising a fixed end and a free end disposed opposite to each other. The fixed end is disposed on a wall of the receptacle, and the free end extends along the thickness direction of the top cap plate and is spaced apart from the wall of the receptacle to form a threading clearance. One end of the protection film is attached to the mounting piece through the threading clearance.

Abstract: The embodiments of the present application provide an electrolyte solution and a lithium-ion battery comprising the same. The electrolyte solution includes a solvent, a lithium salt and a first additive, and the first additive has a molecular formula of wherein R is at least one of an H element, a halogen element or an alkyl group having 1 to 3 carbon atoms. The electrolyte solution provided in the embodiments of the present application has the advantages of having a long shelf life, avoiding the problem of the performance decline of lithium-ion batteries due to deterioration of electrolyte solutions, being capable of inhibiting an increase of internal resistance of the lithium-ion batteries in low-temperature cycles, and improving the performance of the lithium-ion batteries.

Abstract: The present disclosure provides a lithium-ion battery, the lithium-ion battery comprises a positive electrode plate, a negative electrode plate, a separator and an electrolyte, the positive active material comprises a layered lithium-containing compound, the negative active material comprises graphite, the positive film and the negative film satisfy a relationship 0.3?(OIc×PDc)/(OIa×PDa)?20.0. The present disclosure can make the lithium-ion battery have smaller swelling and higher charging capability, and also make the lithium-ion battery have excellent cycle life and excellent safety performance during the long-term fast charging process.

Abstract: The present application provides a method and a device for charging a secondary battery, a computer storage medium and electronic equipment. The charging method includes steps of: sending first charge information to a charging source by a battery management system, the first charge information includes a first charge power; performing a constant-power charging on the secondary battery by the charging source according to the first charge power; sending a plurality of pulse discharge information to the charging source by the BMS when a battery status parameter reaches a first predetermined value, each pulse discharge information includes a discharge power and a discharge duration; and performing multiple constant-power pulse discharges on the secondary battery by the charging source according to the discharge power and the discharge duration in the plurality of pulse discharge information.

Abstract: A battery cell includes a case having an opening and an end cover configured to cover the opening. The end cover comprises an end cover body and a support body. The end cover body is configured to be welded and fixed to the case. The support body is disposed on a bottom surface of the end cover body and is disposed along an edge of the end cover body in a circumferential direction. The support body is configured to abut against an inner side surface of the case.

Abstract: A negative electrode plate may comprise a negative electrode current collector and a negative electrode film layer provided on at least one surface of the negative electrode current collector; the negative electrode film layer may comprise a first region and a second region along the width direction, the first region may not comprise a solid electrolyte, while the second region may comprise a solid electrolyte.

Abstract: The present disclosure provides a lithium-ion battery, the lithium-ion battery comprises a positive electrode plate, a negative electrode plate, a separator and an electrolyte, the positive active material comprises a layered lithium-containing compound, the negative active material comprises graphite, the positive film and the negative film satisfy a relationship 0.3?(OIc×PDc)/(OIa×PDa)?20.0. The present disclosure can make the lithium-ion battery have smaller swelling and higher charging capability, and also make the lithium-ion battery have excellent cycle life and excellent safety performance during the long-term fast charging process.

Abstract: The present invention provides a lithium ion battery and a negative electrode material thereof. The negative electrode material includes a mixture of a graphite and an amorphous carbon, wherein the graphite is subjected to a surface treatment, and the surface treatment manner is a combination of mechanical fusion modification and spray drying coating, and wherein the graphite has a graphitization degree of 90-96%, an average particle diameter D50 of 13-25 ?m and a specific surface area BET of 0.8-2.5 m2/g, and the amorphous carbon has a graphitization degree of 65-80%, an average particle diameter D50 of 2-15 ?m and a specific surface area BET of 1.0-3.0 m2/g.

Abstract: The present disclosure provides a lithium-ion battery, and the lithium-ion battery comprises a positive electrode plate, a negative electrode plate, a separator and an electrolyte. The positive active material comprises a material with a chemical formula of LiaNixCoyM1-x-yO2, the negative active material comprises graphite, the OI value of the positive film represented by OIc and the OI value of the negative film represented by OIa satisfy a relationship: 0.05?OIa/OIc?10. By reasonably matching the OI value of the positive film represented by OIc and the OI value of the negative film represented by OIa and making OIa/OIc between 0.05 and 10, the dynamics performance of the positive electrode plate and the dynamics performance of the negative electrode plate can achieve an optimal match, the lithium-ion battery can have higher charging capability, and also have excellent cycle life and excellent safety performance during the long-term fast charging use.

Abstract: The present disclosure provides a lithium-ion battery, the lithium-ion battery comprises a positive electrode plate, a negative electrode plate, a separator and an electrolyte, the positive active material comprises a layered lithium-containing compound, the negative active material comprises graphite, the positive film and the negative film satisfy a relationship 0.3?(OIc×PDc)/(OIa×PDa)?20.0. The present disclosure can make the lithium-ion battery have smaller swelling and higher charging capability, and also make the lithium-ion battery have excellent cycle life and excellent safety performance during the long-term fast charging process.

Abstract: The present disclosure provides a lithium-ion battery, and the lithium-ion battery comprises a positive electrode plate, a negative electrode plate, a separator and an electrolyte. The positive active material comprises a material with a chemical formula of LiaNixCoyM1-x-yO2, the negative active material comprises graphite, the OI value of the positive film represented by OIc and the OI value of the negative film represented by OIa satisfy a relationship: 0.05?OIa/OIc?10. By reasonably matching the OI value of the positive film represented by OIc and the OI value of the negative film represented by OIa and making OIa/OIc between 0.05 and 10, the dynamics performance of the positive electrode plate and the dynamics performance of the negative electrode plate can achieve an optimal match, the lithium-ion battery can have higher charging capability, and also have excellent cycle life and excellent safety performance during the long-term fast charging use.

Abstract: The present invention provides a lithium ion battery and a negative electrode material thereof. The negative electrode material includes a graphite and an amorphous carbon, wherein the graphite has a graphitization degree of 90˜96% and an average particle diameter D50 of 2˜25 ?m, and the amorphous carbon has a graphitization degree of 65˜80% and an average particle diameter D50 of 2˜25 ?m. Compared with the prior art, by mixing graphite having a small particle diameter with amorphous carbon, the negative electrode material of the present invention has excellent dynamic performance, cycle performance and storage performance. The present invention also provides a lithium ion battery.

Abstract: The present disclosure provides a method, apparatus, and device for charging a battery, and storage medium. The method for charging a battery includes acquiring a battery temperature; determining a charging current value In for the nth charging stage of the battery corresponding to a charging cut-off SOC Sn for the nth charging stage, according to the acquired battery temperature and a preset mapping relationship between a charging cut-off SOC S and a charging current value I for different temperature ranges; charging the battery with Ij in the jth charging stage; acquiring a SOC of the battery at the current time; if the SOC is less than Sj, continuing to charge the battery with if the SOC is not less than Sj and j<N, charging the battery with Ij+1; if the SOC is not less than Sj and j=N, stopping charging the battery.