Abstract: A current collecting component for a battery cell having two output poles with opposite polarities for outputting electrical energy. The current collecting component includes two current collectors, an insulator, and a limiting structure. The two current collectors are arranged opposite each other along a width direction of the current collecting component and are configured to connect to the two output poles, respectively. The insulator is configured to connect the two current collectors and is located at least partially between the two current collectors in the width direction to insulate the two current collectors from each other. The limiting structure is configured to restrict the current collectors from leaving the insulator in the width direction.

Abstract: A battery cell includes a shell, an end cover, an electrode assembly, and a current collector component. The shell has an opening, and the inner surface of the shell is provided with a first limit part in a protruding manner. The end cover covers the opening. The electrode assembly and the end cover are respectively located on both sides of the first limit part, and the electrode assembly has a tab on the side facing the end cover. The current collector component includes a body part and a connecting part, and the connecting part is connected to the first limit part. The body part includes a first welding region and a second welding region, the first welding region is located on the periphery of the second welding region, the first welding region and the second welding region are separated by the connection position between the connecting part and the body part.

Abstract: An electrode assembly and a related battery, and battery module are provided, wherein the electrode assembly includes: at least one positive electrode plate and at least one negative electrode plate, the number of all the positive and negative electrode plates is greater than or equal to 3; the positive and negative electrode plates are wound around the winding axis and arranged in a superimposing manner along a direction vertical to the winding axis, each positive electrode plate includes a positive main body part, at least part of the positive main body part is a positive active substance area, each negative electrode plate includes a negative main body part, at least part of the negative main body part is the negative active substance area, two ends of the negative active substance area along the winding axis both exceed corresponding ends of the adjacent positive active substance area.

Abstract: A battery and an electrical device are provided. The battery includes at least one first battery cell and at least one second battery cell, an internal resistance of the first battery cell is greater than that of the second battery cell, and a heat transfer rate of the first battery cell is less than that of the second battery cell.

Abstract: This application provides an electrode assembly, a battery cell, a battery, and an electric apparatus, and pertains to the field of battery technologies. The electrode assembly may include a negative electrode plate and a positive electrode plate. The negative electrode plate may include a negative electrode active substance layer, and a first electrolyte storage trough may be disposed on the negative electrode active substance layer. The positive electrode plate may include a positive electrode active substance layer, the positive electrode active substance layer and the negative electrode active substance layer may be disposed opposite each other in a first direction, and a second electrolyte storage trough may be disposed on the positive electrode active substance layer, the second electrolyte storage trough and the first electrolyte storage trough being disposed opposite each other in the first direction.

Abstract: The disclosure relates to the field of electrochemistry, and in particular to a lithium-ion secondary battery, a battery module, a battery pack, and a powered device. A lithium-ion secondary battery, includes a bare cell accommodating cavity in which a bare cell group including one or more bare cells A and one or more bare cells B is arranged, wherein the bare cell A includes a first positive electrode sheet including a first positive-electrode active material selected from a single crystal or single crystal-like low-nickel ternary positive electrode material A1, the bare cell B includes a second positive electrode sheet including a second positive-electrode active material and/or a third positive-electrode active material, the second positive-electrode active material is selected from a polycrystalline high-nickel ternary positive electrode material B1, and the third positive-electrode active material is selected from a polycrystalline low-nickel ternary positive electrode material B2.

Abstract: The present application relates to a current collector, an electrode plate, a battery cell, a battery, and an electric device. The current collector includes a stainless steel current-collecting portion for collecting a current, where the stainless steel current-collecting portion includes a blank area and a coating area that are arranged adjacent to each other in a preset direction, the coating area is configured to be coated with an active material, and the blank area has a hardness less than that of the coating area.

Abstract: This application relates to the field of energy storage components, and in particular, to a protective plate, a battery unit assembly, a battery module group, and a vehicle. The protective plate is provided with a guide groove. The protective plate is configured to shield an explosion-proof valve of a battery cell. The guide groove is configured to be disposed corresponding to the explosion-proof valve, and is configured to guide a flow direction of a flame ejected from the explosion-proof valve. In this application, the guide groove is disposed on the protective plate to guide the flame to a direction away from passengers, thereby protecting the passengers from injury.

Abstract: The present application relates to a binder compound of formula (I), a method for preparing the same, and an electrode sheet comprising the same. In formula (I), R1, R2, and R3 each independently represents an unsubstituted or substituted linear or branched alkyl with 1-6 carbon atoms, or an unsubstituted or substituted aryl with 6-20 carbon atoms; R4 represents —COOM; R5 represents a bridging oxo or bridging imino; each M independently represents one of Li, Na, K, Rb, and Cs; Z represents a linear or branched alkylene with 1-6 carbon atoms; m is an integer selected from 7,600 to 47,000; n is an integer selected from 1,520 to 94,000; and m/n=0.1-10.

Abstract: Embodiments of the present application provide a battery cell, a battery, a power consumption device, and a method and device for producing a battery cell. The battery cell includes: a housing having an opening; an electrode assembly accommodated in the housing; an end cover configured to cover the opening and provided with an electrode terminal; and a support, disposed in the housing, where the support and the electrode assembly are arranged in a first direction, the support and the end cover are arranged in a second direction, and the first direction is perpendicular to the second direction, the support abuts against the electrode assembly in the first direction so as to limit the electrode assembly.

Abstract: Battery cell and a device and a method for manufacturing the same, a battery, and a power consumption device are provided. The battery cell includes: a shell; an end cap patch; an end cap patch; an insulating film, including a main body portion and a flanging portion, wherein the flanging portion is provided between the end cap and the end cap patch; and a first glue layer, comprising a first portion and a second portion which are provided continuously. The first portion is provided around the second portion, and the first portion is provided between the flanging portion and the end cap patch. The first portion bonds the flanging portion and the end cap patch. The second portion is provided between the end cap and the end cap patch, and the second portion bonds the end cap and the end cap patch. The first portion is thinner than the second portion.

Abstract: The present application provides a battery pack, a method for producing a battery pack and a vehicle. The vehicle includes a vehicle body and a battery pack, the battery pack being disposed in the vehicle body. The battery pack includes a battery module and a case. The case has a containing chamber, and the battery module is located in the containing chamber. The battery module includes a plurality of battery units arranged in a horizontal direction, and each battery unit at least includes one battery cell. A size of the battery module in the horizontal direction is larger than a size of the battery module in a vertical direction. The size of the battery module in the vertical direction is L1, and a size of the battery pack in the vertical direction is L2, where 70%?L1/L2?95%.

Abstract: An end cap assembly applicable to a battery cell includes a cover plate configured to close a housing, a terminal plate located on a side of the cover plate away from the housing, a first insulation component at least partially located between the terminal plate and the cover plate, an electrode terminal penetrating the cover plate and the first insulation component and connected to the terminal plate, and a sealing element including a sealing portion and a connecting portion connected to the sealing portion. The sealing portion is disposed between a first insulation component and the cover plate to form a sealing region around the electrode terminal.

Abstract: The present application relates to a binder compound of formula (I), a method for preparing the same, and an electrode sheet comprising the same. In formula (I), R1, R2, and R3 each independently represents an unsubstituted or substituted linear or branched alkyl with 1-6 carbon atoms, or an unsubstituted or substituted aryl with 6-20 carbon atoms; R4 represents —COOM; R5 represents a bridging oxo or bridging imino; each M independently represents one of Li, Na, K, Rb, and Cs; Z represents a linear or branched alkylene with 1-6 carbon atoms; m is an integer selected from 7,600 to 47,000; n is an integer selected from 1,520 to 94,000; and m/n=0.1-10.

Abstract: A battery module, a battery pack, and an electric apparatus are provided. In some embodiments, the battery module includes a first type of cell and a second type of cell that are cells of different chemical systems, where the first type of cell includes n first cells, the second type of cell includes m second cells, n and m each are selected from an integer greater than 1, at least one of the first cells and at least one of the second cells are electrically connected in series, and the first cell and the second cell satisfy at least the following relationships: 0.08??RB/?RA?3.50, and 0.10 m?/100 cycles??RA?0.40 m?/100 cycles, where ?RA is a discharge resistance growth rate of the first cell, and ?RB is a discharge resistance growth rate of the second cell; and IMPB<IMPA, where IMPA is an alternating current impedance of the first cell, and IMPB is an alternating current impedance of the second cell.

Abstract: Provided are a battery pack and an electric apparatus. The battery pack of this application includes multiple battery cells arranged repeatedly in a unit structure, where the unit structure includes N1 first battery cells and N2 second battery cells, the N1 first battery cells surrounding the N2 second battery cells, N1 and N2 being integers greater than or equal to 1, and N1>N2. Given that the first battery cell has a volumetric energy density denoted as D1 and a direct current impedance denoted as R1, and that the second battery cell has a volumetric energy density denoted as D2 and a direct current impedance denoted as R2, the unit structure has a thermal stability factor ?=(D1×R1)/(D2×R2) satisfying 0.2???1.

Abstract: A battery cell, a battery, a power consuming device, and a method for manufacturing a battery cell are provided. The battery cell includes: a shell; and an electrode assembly arranged in the shell and including a first electrode plate and a second electrode plate having an opposite polarity to the first electrode plate. The first electrode plate is repeatedly folded in a first direction such that the first electrode plate comprises a plurality of first stack sections connected and stacked in sequence, and the second electrode plate is folded once in a second direction such that the second electrode plate comprises two second stack sections connected to each other, the second direction being perpendicular or parallel to the first direction. The second stack sections and the first stack sections are stacked alternately in sequence. A bent portion of the second electrode plate is in contact with an inner wall of the shell.

Abstract: This application relates to the field of energy storage technologies, and provides a battery, an apparatus, a preparation method of battery, and a preparation apparatus of battery. The battery includes a first battery cell and a second battery cell. The first battery cell includes a first pressure relief mechanism, the second battery cell includes a second pressure relief mechanism, an energy density of the first battery cell is greater than an energy density of the second battery cell, and an area of the first pressure relief mechanism is greater than an area of the second pressure relief mechanism. The apparatus includes the foregoing battery.

Abstract: The present application relates to a secondary battery and a battery module. The secondary battery comprises: a casing, which is provided with an accommodating hole with an opening; a top cover assembly, which is in sealed connection with the casing to close the opening; an electrode assembly, which is arranged in the accommodating hole, and comprises two end faces opposite to a first direction perpendicular to an axial direction of the accommodating hole, and tabs extending from the end faces, the electrode assembly comprises two or more electrode units, wherein two or more electrode units are stacked in the axial direction, and in a second direction perpendicular to the axial direction and the first direction, the size of the tabs is smaller than that of the end faces; and a current collector, which comprises a body portion.

Abstract: A binder compound, a conductive binder, and a secondary battery containing the same are provided. In some embodiments, the binder compound of the present disclosure has a structure of formula (I), where R1 and R2 each independently represent a straight or branched C1-12 alkyl; R3 represents a halogen or cyano group; R4 represents a hydroxymethyl or amino; Z represents a straight or branched C1-12 alkylene; and m represents an integer selected from 7600-47000. The binder compound and the conductive binder of the present disclosure can improve the storage and cycle performances of the secondary battery.