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, according to the battery temperature and a mapping relationship between different temperature ranges and charging current values I, wherein a preset charging cut-off voltage value Vn for the nth charging stage is greater than Vn?1; charging the battery with Ij in the jth charging stage; acquiring a voltage value of the battery at the current time; if the voltage value is less than Vj, continuing to charge the battery with Ij; if the voltage value is not less than Vj and j<N, charging the battery with Ij+1; if the voltage value is not less than Vj and j=N, stopping charging the battery.

Abstract: The present disclosure provides a lithium-ion secondary battery, which comprises a positive electrode plate, a negative electrode plate, a separator and an electrolyte. The lithium-ion secondary battery satisfies a relationship: 1.5?(m×C)/(?×Cap)?6.5. In the present disclosure, by comprehensively considering the rated capacity of the battery, the mass of the electrolyte and the intrinsic parameters of the electrolyte and reasonably quantifying the relationship thereof, the lithium-ion secondary battery can have good dynamics performance and longer cycle life at the same time.

Abstract: The present disclosure provides a positive electrode plate and a battery, the positive electrode plate comprises a positive current collector and a positive film, the positive film is provided on least one surface of the positive current collector and comprises a positive active material, the positive active material comprises a layered lithium-containing compound, and an OI value of the positive film represented by COI is less than or equal to 150. The positive electrode plate of the present disclosure has smaller swelling and excellent dynamics performance, and the battery of the present disclosure has high safety performance, excellent dynamics performance and long cycle life at the same time.

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, 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 having a chemical formula of LiaNixCoyMzO2, the negative active material comprises a graphite-type carbon material, the lithium-ion battery satisfies a relationship 58%?KYa/(KYa+KYc)×100%?72%. In the present disclosure, by reasonably matching the relationship between the anti-compression capability of the positive active material and the anti-compression capability of the negative active material, it can make the positive electrode plate and the negative electrode plate both have good surface integrity, and in turn make the lithium-ion battery have excellent dynamics performance and excellent cycle performance at the same time.

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.

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, according to the battery temperature and a mapping relationship between different temperature ranges and charging current values I, wherein a preset charging cut-off voltage value Vn for the nth charging stage is greater than Vn?1; charging the battery with Ij in the jth charging stage; acquiring a voltage value of the battery at the current time; if the voltage value is less than Vj, continuing to charge the battery with Ij; if the voltage value is not less than Vj and j<N, charging the battery with Ij+1; if the voltage value is not less than Vj and j=N, stopping charging the battery.

Abstract: A method for charging a lithium ion battery includes the steps of: 1) determining a maximum charging current I0 and a lowest anode potential ? of the lithium ion battery at which no lithium precipitation occurs; 2) charging the lithium ion battery at a constant current of I1 which is greater than I0 for a charging time t1; 3) discharging the lithium ion battery at a constant current of I2 which is less than I0 for a discharging time t2, 5?t1/t2?50; 4) repeating steps 2) and 3) until a cutoff voltage of the lithium ion battery reaches V0 and standing the lithium ion battery for a standing time t3; and 5) charging the lithium ion battery at a constant current of I0 until the cutoff voltage of the lithium ion battery reaches V0 and charging the lithium ion battery to a cutoff current of I3 at a constant voltage.

Abstract: The present disclosure provides a lithium-ion battery. The lithium-ion battery includes: a positive electrode plate including a positive current collector and a positive conductive membrane which is formed on the surface of the positive current collector; a negative electrode plate including a negative current collector and a negative conductive membrane which is formed on the surface of the negative current collector; a separator; an electrolyte; and a packaging foil. The compacted density of the positive conductive membrane is at a range from 3.9 g/cm3 to 4.4 g/cm3; the compacted density of negative conductive membrane is at a range from 1.55 g/cm3 to 1.8 g/cm3; the ratio of the capacity of the negative active material to the capacity of the positive active material is at a range from 1 to 1.4.

Abstract: Embodiments of the present application provide a method of battery charging, which relates to the field of battery charging and is capable of effectively improving safety performance of the battery. The method includes: obtaining an anode open circuit voltage curve, an anode impedance curve, a lithium deposition potential threshold and a state of charge, corresponding to a battery; determining a current anode open circuit voltage according to the anode open circuit voltage curve and the state of charge; determining a current anode impedance according to the anode impedance curve and the state of charge; determining a current charging current according to the current anode open circuit voltage, the current anode impedance and the lithium deposition potential threshold; and charging the battery according to the current charging current. Embodiments of the present application are applicable to a rapid battery charging process.

Abstract: A method, an apparatus and a device for charging a battery are provided in the present disclosure. The method may include: defining a charging current In for an Nth charging stage of a charging process based on charging capability of the battery, wherein In<In-1; defining a charge cutoff voltage Vn for the Nth charging stage of the charging process, wherein Vn>Vn-1 and Vn is smaller than a theoretical charge cutoff voltage Vmax; in case that the N?1th charging stage is not a last charging stage, charging the battery with In-1 during the N?1th charging stage and proceeding to the Nth charging stage when a voltage across the battery reaches Vn-1; and in case that the N?1th charging stage is the last charging stage, charging the battery with In-1 during the N?1th charging stage and stopping charging when the voltage across the battery reaches Vn-1.

Abstract: A method, an apparatus and a system for controlling charging of a battery module are provided in the present disclosure. The method for controlling charging of the battery module may include: acquiring an internal pressure value of the battery module; determining a target pressure threshold range to which the acquired internal pressure value of the battery module belongs, based on a plurality of predefined pressure threshold ranges; obtaining a target charge cutoff voltage corresponding to the target pressure threshold range, based on a correspondence relationship between a plurality of predefined charge cutoff voltage and the plurality of predefined pressure threshold ranges; and controlling the battery module to be charged based on the obtained target charge cutoff voltage.

Abstract: Embodiments of the present application provide a method of battery charging, which relates to the field of battery charging and is capable of effectively improving safety performance of the battery. The method includes: obtaining an anode open circuit voltage curve, an anode impedance curve, a lithium deposition potential threshold and a state of charge, corresponding to a battery; determining a current anode open circuit voltage according to the anode open circuit voltage curve and the state of charge; determining a current anode impedance according to the anode impedance curve and the state of charge; determining a current charging current according to the current anode open circuit voltage, the current anode impedance and the lithium deposition potential threshold; and charging the battery according to the current charging current. Embodiments of the present application are applicable to a rapid battery charging process.

Abstract: The present invention provides a fast charging method for battery, including the steps as follows: (1) the battery is charged with a constant current I1 and the charging time is t1; (2) the battery is charged with a constant current I2 and the charging time is t2; (3) the battery is discharged with the constant current I2 and the discharging time is t3, recycling until the voltage reaches a pre-charging voltage of battery; (4) the battery is standed after the voltage reaching the pre-charging voltage of battery, and the rest time is t4, and then the battery is charged with a constant current I3 until the voltage reaching a cut-off voltage of battery, and then the battery is charged with a constant voltage until the current reaching a cut-off current I4; wherein, I2<I1, t2<t1, t3<t1, I2<I3?I1, I4?I2.

Abstract: The present application discloses a binder for a lithium ion battery, which comprises a polymer obtained through emulsion polymerization of a monomer in the presence of a reactive emulsifying agent. The binder is used in fabrication of a lithium ion electrode plate, whereby a thin film formed on the surface of an electrode membrane and fine channels formed in the electrode membrane with the use of a conventional emulsifying agent during the electrode membrane-forming process are eliminated, and the lithium ion conductivity of the electrode membrane is improved. Meanwhile, with the use of the reactive emulsifying agent, the bonding effect of the binder and the stability of the electrode membrane are improved, thereby greatly improving the charging rate and cycle life of the lithium ion battery.

Abstract: A method for charging a lithium ion battery includes the steps of: 1) determining a maximum charging current I0 and a lowest anode potential ? of the lithium ion battery at which no lithium precipitation occurs; 2) charging the lithium ion battery at a constant current of I1 which is greater than I0 for a charging time t1; 3) discharging the lithium ion battery at a constant current of I2 which is less than I0 for a discharging time t2, 5?t1/t2?50; 4) repeating steps 2) and 3) until a cutoff voltage of the lithium ion battery reaches V0 and standing the lithium ion battery for a standing time t3; and 5) charging the lithium ion battery at a constant current of I0 until the cutoff voltage of the lithium ion battery reaches V0 and charging the lithium ion battery to a cutoff current of I3 at a constant voltage.

Abstract: The present application discloses a binder for a lithium ion battery, which comprises a polymer obtained through emulsion polymerization of a monomer in the presence of a reactive emulsifying agent. The binder is used in fabrication of a lithium ion electrode plate, whereby a thin film formed on the surface of an electrode membrane and fine channels formed in the electrode membrane with the use of a conventional emulsifying agent during the electrode membrane-forming process are eliminated, and the lithium ion conductivity of the electrode membrane is improved. Meanwhile, with the use of the reactive emulsifying agent, the bonding effect of the binder and the stability of the electrode membrane are improved, thereby greatly improving the charging rate and cycle life of the lithium ion battery.

Abstract: The present invention provides a fast charging method for battery, including the steps as follows: (1) the battery is charged with a constant current I1 and the charging time is t1; (2) the battery is charged with a constant current I2 and the charging time is t2; (3) the battery is discharged with the constant current I2 and the discharging time is t3, recycling until the voltage reaches a pre-charging voltage of battery; (4) the battery is standed after the voltage reaching the pre-charging voltage of battery, and the rest time is t4, and then the battery is charged with a constant current I3 until the voltage reaching a cut-off voltage of battery, and then the battery is charged with a constant voltage until the current reaching a cut-off current I4; wherein, I2<I1, t2<t1, t3<t1, I2<I3?I1, I4?I2.

Abstract: A rapid charge lithium-ion battery comprises a positive plate, a negative plate, a separator disposed at intervals between the positive plate and the negative plate, and an electrolyte. The positive plate includes a positive current collector and a positive active material layer disposed on a surface of the positive current collector; the positive active material layer includes a positive active material, a positive conductive agent and a positive adhesive; the positive active material includes a component A and a component B; the component A is selected from at least one of lithium nickel cobalt aluminum oxide (NCA), lithium nickel cobalt manganese oxide (NCM), lithium manganese oxide (LMO) and lithium cobalt oxide (LiCoO2); the component B is selected from at least one of lithium iron phosphate (LFP) and lithium titanium oxide (LTO); and the component B accounts for 5 to 90 percent by mass of the positive active material.

Abstract: The present invention provides a lithium-ion battery. The lithium-ion battery includes: a positive electrode plate including a positive current collector and a positive conductive membrane which is formed on the surface of the positive current collector by coating, drying and compacting a positive mixture slurry containing a positive active material, a positive conductive additive and a positive binder; a negative electrode plate including a negative current collector and a negative conductive membrane which is formed on the surface of the negative current collector by coating, drying and compacting a negative mixture slurry containing a negative active material, a negative conductive additive and a negative binder; a separator; an electrolyte; and a packaging foil. The compacted density of the positive conductive membrane is at a range from 3.9 g/cm3 to 4.4 g/cm3; the compacted density of negative conductive membrane is at a range from 1.55 g/cm3 to 1.