Abstract: A battery sampling device, a battery, and an electricity consumption device are provided. The battery sampling device includes a conductive component, a sampling component and a bearing component. The conductive component is in contact with a pole and is electrically connected to the pole. The sampling component is electrically connected to the conductive component and is configured to transmit or process electrical parameters acquired by the conductive component. The bearing component is configured to bear the conductive component and the sampling component and to be adapted to being inserted into a gap between two battery cells with end surfaces of the pole welded with each other. The conductive component abuts against a side surface of the pole and the sampling component, so as to realize an electric connection among the pole, the conductive component and the sampling component.

Abstract: This application relates to a liquid leak detection method and apparatus, a battery control unit, and a battery management system. The method includes: obtaining a gas concentration detection signal output separately by a plurality of target gas sensors in a battery box, where the gas concentration detection signal is used for indicating a measured gas concentration; obtaining position information of each target gas sensor in the battery box; and determining a leaking region in the battery box based on the gas concentration detection signal and the position information of each target gas sensor. To sum up, in an embodiment of this application, the leaking region in the battery box can be located by analyzing the gas concentration detection signals and position information of a plurality of target gas sensors in the battery box, so that prompt information used for indicating the leaking region can be output subsequently.

Abstract: A secondary battery is disclosed. The secondary battery includes a first binder and a second binder, the first binder includes at least one of polyvinylidene fluoride, rubber, epoxy resin, polyurethane, and acrylate, and the second binder includes at least one of polytetrafluoroethylene, polyimide, polypropylene, polyethylene, ethylene vinyl acetate copolymer, and styrene-ethylene-butylene-styrene block copolymer.

Abstract: A failed battery cell handling method, a battery module, a battery pack, and a device, which relates to the technical field of energy devices. The handling method includes: injecting a conductive material into a failed battery cell, where the conductive material is in a molten state when being injected, and is in a solid state after cooling, and the conductive material is configured to electrically connect a positive terminal and a negative terminal of the failed battery cell.

Abstract: A spot-checking method for a visual inspection system includes obtaining a plurality of to-be-inspected images, inspecting the plurality of to-be-inspected images to obtain defect types and/or parameters of a target object in the plurality of to-be-inspected images, and confirming availability of the visual inspection system based on the defect types and/or the parameters.

Abstract: Embodiments of the present application provides a vehicle battery swapping method.

Abstract: A battery heating system includes a voltage conversion unit configured to be electrically connected to a power source and to a battery to be heated, and a control unit. The voltage conversion unit receives a first voltage input by the power source or a second voltage input by the battery to be heated. The control unit acquires a charging and discharging frequency of the voltage conversion unit, determines a charge transfer impedance of the battery to be heated according to the charging and discharging frequency, calculates a safe amplitude current of the battery to be heated according to the charge transfer impedance, and sends a control signal to the voltage conversion unit according to the charging and discharging frequency and the safe amplitude current to cause the voltage conversion unit to perform boost or buck processing of the first voltage or the second voltage according to the control signal.

Abstract: This application provides a lithium-ion battery, a battery module, a battery pack, and an apparatus. The lithium-ion battery includes a positive electrode plate, a negative electrode plate, a separator, and a nonaqueous electrolyte. The positive electrode plate includes Li1+xNiaCobMe(1?a?b)O2?cYc, where ?0.1?x?0.2, 0.8?a<1, 0<b<1, 0<(1-a-b)<1, 0?c<1, Me is selected from one or more of Mn, Al, Mg, Zn, Ga, Ba, Fe, Cr, Sn, V, Sc, Ti, and Zr, and Y is selected from one or more of F, Cl, and Br. The nonaqueous electrolyte includes a nonaqueous solvent and a lithium salt, where the nonaqueous solvent includes a carbonate solvent and a high oxidation potential solvent, and the high oxidation potential solvent is selected from one or more of compounds represented by formula I and formula II.

Abstract: The application relates to a battery module, a manufacturing method and a manufacturing device thereof, a battery pack and a power consumption apparatus. The battery module includes a first-type battery cell and a second-type battery cell having different chemical systems and being electrically connected at least in series, where under the conditions of 25° C. and 100% state of charge (SOC), specific power density P2 of the second-type battery cell is higher than specific power density P1 of the first-type battery cell. Satisfying: 0.04?(r1/m)/(r2/n)?14, where, r1 and r2 are resistances per unit area of a positive electrode plate of the first-type battery cell and a positive electrode plate of the second-type battery cell respectively, and m and n are numbers of laminations of the positive electrode plate of the first-type battery cell and the positive electrode plate of the second-type battery cell.

Abstract: Embodiments of the present application provide a battery cell, a battery and an electrical apparatus, which can effectively improve the performance of batteries with low process complexity. The battery cell includes: at least two electrode assemblies; a lithium-supplementing apparatus arranged between two adjacent electrode assemblies in the at least two electrode assemblies; a shell configured to accommodate the at least two electrode assemblies, the shell including a first wall, and the first wall being provided with a lithium-supplementing electrode terminal; and a connecting element configured to electrically connect the lithium-supplementing apparatus with the lithium-supplementing electrode terminal.

Abstract: Provided are a battery cell, a battery, an electrical apparatus, and a method and device for manufacturing a battery cell. The battery cell includes a case, an end cover, an electrode assembly and a solder, the case has an accommodating cavity and an opening at one end; the end cover is connected to the case; the electrode assembly is provided in the accommodating cavity, the electrode assembly has a first tab, and the first tab faces the opening; the solder is provided between the end cover and the first tab and connects the end cover and the first tab; an insulating member is also provided between the end cover and the first tab, an insulating cavity is provided on the insulating member, a feed port is provided on one side of the insulating cavity, and the feed port faces the solder.

Abstract: The present application discloses a battery and an electricity consuming apparatus. The battery includes a plurality of battery cells stacked in a first direction and an isolation assembly. The isolation assembly includes a buffer component arranged between two adjacent battery cells, the spacing between the two adjacent battery cells in the first direction is D, an area of a surface of the buffer component abuts against the battery cell is S1, and a size of the buffer component in the first direction in an uncompressed state is h1; a force F applied by the battery cell to the buffer component meets: 500N?F?10000N, in which the stress M of the buffer component obtained according to a stress strain curve of the buffer component is 26*(h1?D)/h1)2?0.09*(h1?D)/h1 in MPa, and by combining the area S1, the force F is obtained as F=S1*M.

Abstract: This application relates to the field of new energy technology, and in particular, to a method for supplementing an electrolyte solution for a battery cell. The method includes: processing a shell of the battery cell from outside the battery cell to form a first recessed portion, and causing a thickness of a bottom wall of the first recessed portion to be less than a thickness of the shell around the bottom wall; piercing the bottom wall of the first recessed portion from outside the battery cell toward an interior of the battery cell to form an injection structure; and injecting the electrolyte solution into the battery cell through the injection structure.

Abstract: A packaging box, a battery, and an electrical device are disclosed. The packaging box includes a box body, a ferrule, and a sleeve. An accommodation cavity, a first opening, and a second opening are created in the box body. Both the first opening and the second opening communicate with the accommodation cavity. The sleeve includes a first cap, a second cap, and a cylinder. The first cap and the second cap are connected to two ends of the cylinder respectively. The first cap and the second cap protrude beyond the ferrule. The cylinder and the second cap enter the accommodation cavity from the first opening and are snap-fastened in the accommodation cavity. The first cap protrudes beyond the second opening and abuts on the outer surface of the box body.

Abstract: Some embodiments of this application disclose a battery and an electrical device. The battery includes: a battery cell, where a pressure relief mechanism is disposed on a first wall of the battery cell; and a protection plate, where the protection plate is disposed opposite to the pressure relief mechanism. The protection plate is a polymer-based composite fiberboard. The technical solution provided in this application can protect a box of the battery from airflow impact and high-temperature melting arising from thermal runaway of the battery, thereby enhancing safety performance of the battery.

Abstract: Embodiments of the present application provide a battery and a power consuming device. The battery includes a case and a battery cell. The case has a top and a bottom opposite to each other in a height direction of the case. The bottom is provided with an opening. The battery cell is arranged upside down in the case with an end cap facing the bottom, the end cap is provided with a pressure relief mechanism and electrode terminals, and the pressure relief mechanism and the electrode terminals are both arranged to face the bottom.

Abstract: A substrate treatment apparatus, comprising: a coating device configured to coat a substrate, which is conveyed at a first speed in a feeding direction, with a material; a drying device configured to receive the substrate, which is coated by means of the coating device, at the first speed and dry the material; an exposure device configured to receive the substrate, which is dried by means of the drying device, at the first speed and continuously convey a mask at the first speed in the feeding direction, the mask being used for regional shading during exposure of the material by means of the exposure device; and an etching device configured to receive the substrate, which is exposed by means of the exposure device, at the first speed and etch the material and a portion of the substrate in an unexposed region of the substrate.

Abstract: This application discloses a battery housing, a battery cell, a battery, and an electric device. The battery housing includes a shell, where a bottom of the shell has a protrusion corresponding region, and the protrusion corresponding region is opposite a protrusion of a bottom plate of the battery; and an explosion-proof valve, where the explosion-proof valve is disposed in a non-protrusion corresponding region at the bottom of the shell.

Abstract: This application discloses a secondary battery including a positive electrode plate and a negative electrode plate, wherein the positive electrode plate comprises a positive electrode current collector and a positive electrode film disposed on a surface of the positive electrode current collector and comprising a positive active material, the negative electrode plate comprises a negative electrode current collector and a negative electrode film disposed on a surface of the negative electrode current collector and comprising a negative active material. The positive active material comprises one or more of lithium-containing phosphates with olivine structure and modified compounds thereof, and a resistance R of the negative electrode plate satisfies: 3.0 m??R?7.0 m?.

Abstract: This application discloses a separator and a preparation method thereof, a battery, and an electric apparatus. The separator includes a substrate and a coating, where the coating is formed on at least a portion of surface of the substrate, and the coating includes composite particles and a binder. The composite particles form bulges on surface of the coating, and the composite particles include polyacrylate particles and inorganic particles. The inorganic particle is present between at least two of the polyacrylate particles. Crosslinking degree a of the composite particles and mass swelling degree b thereof in an electrolyte satisfy a/b?1 and a?75%.