WO2026025366A1 - 电池单体、电池装置及用电装置 - Google Patents

电池单体、电池装置及用电装置

Info

Publication number
WO2026025366A1
WO2026025366A1 PCT/CN2024/108914 CN2024108914W WO2026025366A1 WO 2026025366 A1 WO2026025366 A1 WO 2026025366A1 CN 2024108914 W CN2024108914 W CN 2024108914W WO 2026025366 A1 WO2026025366 A1 WO 2026025366A1
Authority
WO
WIPO (PCT)
Prior art keywords
wall
groove
battery cell
equal
groove segment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/108914
Other languages
English (en)
French (fr)
Inventor
黄炜鸿
周文林
徐良帆
张倩倩
许虎
李星
金海族
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Contemporary Amperex Technology Co Ltd
Original Assignee
Contemporary Amperex Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Contemporary Amperex Technology Co Ltd filed Critical Contemporary Amperex Technology Co Ltd
Priority to CN202480063042.1A priority Critical patent/CN122003757A/zh
Priority to PCT/CN2024/108914 priority patent/WO2026025366A1/zh
Publication of WO2026025366A1 publication Critical patent/WO2026025366A1/zh
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape

Definitions

  • This application relates to the field of battery manufacturing technology, and more specifically, to a battery cell, a battery device, and an electrical device.
  • This application provides a battery cell, a battery device, and an electrical device that can improve the reliability of the battery device.
  • this application provides a battery cell.
  • the battery cell includes a casing, an electrode assembly, and an insulating member.
  • the casing has a first wall.
  • the electrode assembly is housed within the casing.
  • the insulating member covers the outer side of the casing and covers the outer surface of the first wall.
  • the insulating member has a first hollow area located on the side of the first wall opposite to the electrode assembly, and the outer surface of the first wall forms an exposed area corresponding to the first hollow area, the exposed area having grooves and/or protrusions.
  • the groove includes a first groove
  • the exposed area includes a plurality of first grooves, the plurality of first grooves forming an adhesive area
  • the technical solution of this application embodiment provides a plurality of first grooves for connection with the adhesive layer, which further improves the bonding reliability between the adhesive layer and the exposed area, thereby improving the reliability of the battery cell connection to the housing and the reliability of the battery device.
  • the opening of the first groove is circular, and the diameter R1 of the opening of the first groove is greater than or equal to 0.4 mm and less than or equal to 1.2 mm.
  • the technical solution of this application embodiment has an opening diameter of the first groove that meets the above conditions, which is easy to process and improves the bonding reliability between the adhesive layer and the exposed area.
  • the technical solution of this application embodiment has an opening diameter of the first groove that meets the above conditions, which is easy to process and further improves the bonding reliability between the adhesive layer and the exposed area.
  • the opening of the first groove is square, and the side length A1 of the opening of the first groove is greater than or equal to 0.4 mm and less than or equal to 1.2 mm.
  • the opening side length of the first groove meets the above conditions, which is easy to process and improves the bonding reliability between the adhesive layer and the exposed area.
  • the side length A1 of the opening of the first groove is greater than or equal to 0.4 mm and less than or equal to 0.8 mm.
  • the opening side length of the first groove meets the above conditions, which is easy to process and further improves the bonding reliability between the adhesive layer and the exposed area.
  • the depth D1 of the first groove is greater than or equal to 0.08 mm and less than or equal to 0.5 mm.
  • the depth of the first groove meets the above conditions, reducing the impact on the strength of the first wall structure, while improving the bonding reliability between the adhesive layer and the exposed area.
  • the depth D1 of the first groove is greater than or equal to 0.08 mm and less than or equal to 0.2 mm.
  • the depth of the first groove satisfies the above conditions, further reducing the impact on the structural strength of the first wall. This reduces the impact of adhesion on the bonded layer and improves the bonding reliability between the bonded layer and the exposed area.
  • the adhesive layer enters the second groove from the first groove segment.
  • the diameter of the first groove segment of the second groove is smaller than the diameter of the second groove segment, which reduces the risk of the adhesive layer falling off from the second groove segment and improves the bonding reliability between the adhesive layer and the exposed area.
  • the adhesive layer sequentially passes through the third groove segment and the first groove segment into the second groove segment.
  • the diameter of the first groove segment of the second groove is smaller than the diameter of the second groove segment, and the diameter of the first groove segment of the second groove is smaller than the diameter of the third groove segment. This reduces the risk of the adhesive layer falling off from the second groove segment.
  • the adhesive layer is bonded through the third groove segment, increasing the bonding area and improving the bonding reliability between the adhesive layer and the exposed area.
  • the technical solution of this application embodiment has a diameter of the first groove segment that meets the above conditions. This makes it easy to process while reducing the risk of the adhesive layer falling off from the second groove segment and improving the bonding reliability between the adhesive layer and the exposed area.
  • the diameter R3 of the second groove segment is greater than or equal to 1.5 mm and less than or equal to 4 mm.
  • the technical solution of this application embodiment has a diameter of the second groove that meets the above conditions. This makes it easy to process while reducing the risk of the adhesive layer falling off from the second groove and improving the bonding reliability between the adhesive layer and the exposed area.
  • the diameter R4 of the third groove segment is greater than or equal to 2 mm and less than or equal to 4 mm.
  • the diameter of the third groove section meets the above conditions, which increases the bonding area while reducing the risk of the adhesive layer falling off from the exposed area and improving the bonding reliability between the adhesive layer and the exposed area.
  • the depth D2 of the second groove is greater than or equal to 0.4 mm and less than or equal to 1.5 mm.
  • the depth of the second groove meets the above conditions, reducing the risk of the exposed area of the adhesive layer falling off, while reducing the risk of affecting the structural strength of the first wall, and improving the bonding reliability between the adhesive layer and the exposed area.
  • the depth D3 of the first groove segment is greater than or equal to 0.2 mm and less than or equal to 0.75 mm.
  • the depth D4 of the second groove segment is greater than or equal to 0.1 mm and less than or equal to 0.4 mm.
  • the depth D5 of the third groove segment is greater than or equal to 0.1 mm and less than or equal to 0.4 mm.
  • the housing further includes a second wall and a sidewall, wherein the second wall is disposed opposite to the first wall along the thickness direction of the first wall, and the sidewall surrounds the first wall and the second wall.
  • the insulating member includes a first insulating member and a second insulating member disposed separately, wherein the first insulating member covers a portion of the outer surface of the first wall, and the second insulating member covers at least a portion of the outer surface of the second wall and at least a portion of the outer surface of the sidewall.
  • the technical solution of this application embodiment sets the insulator as a first insulating member and a second insulating member that are separately set.
  • the first insulating member is a structure that covers the first wall
  • the second insulating member is a structure that covers the side wall and the second wall. This makes the first insulating member and the second insulating member of the insulating member correspond to the first wall of the outer shell and the second wall and the side wall of the outer shell, respectively, thereby helping to reduce the assembly difficulty between the insulating member and the outer shell.
  • the second insulating member has a flange portion, which is disposed circumferentially along the first wall and located on the outer surface of the first wall. The flange portion and the edge of the first insulating member together enclose a first hollow area.
  • the second insulating member has a flange portion disposed circumferentially on the first wall and located at the edge of the first wall, such that the edge of the first insulating member disposed on the first wall and the flange portion together enclose a first hollow area to form an exposed area on the first wall.
  • the battery cell with this structure does not require the first insulating member to be configured as a structure with through holes, which is beneficial to improving the overall structural strength of the first insulating member. On the other hand, it is beneficial to control the size and dimensions of the first hollow area.
  • the battery cell further includes electrode terminals disposed on the first wall.
  • the insulating member has a second hollow area, which is spaced apart from the first hollow area, and the electrode terminals pass through the second hollow area.
  • the electrode terminal is disposed on the first wall, and the insulating member is provided with a second hollow area through which the power supply terminal passes at the position corresponding to the electrode terminal.
  • the housing includes a shell and an end cap.
  • the shell includes a bottom wall and a plurality of side walls.
  • the bottom wall and the end cap are disposed opposite each other along the thickness direction of the first wall.
  • the plurality of side walls surround the bottom wall.
  • One end of the plurality of side walls is connected to the bottom wall, and the other end forms an opening.
  • the end cap closes the opening and is the first wall.
  • the end cap is a first wall, which increases the friction between the end cap and the adhesive layer, reduces the risk of the adhesive layer falling off the end cap, improves the bonding reliability between the adhesive layer and the end cap, thereby improving the reliability of the end cap connecting to the housing and improving the reliability of the battery device.
  • the battery device includes a housing, an adhesive layer, a connecting member, and battery cells according to any embodiment of the first aspect.
  • the battery cells are disposed within the housing.
  • the adhesive layer is disposed in the exposed area.
  • the connecting member is disposed within the housing, and at least one side of the connecting member is connected to the adhesive layer in the thickness direction of the first wall to connect multiple battery cells.
  • the adhesive layer is disposed in the exposed area, thereby connecting the battery cell and the connecting component, improving the reliability of the battery cell connection to the housing, and improving the reliability of the battery device.
  • the exposed area is provided with a groove, and at least a portion of the adhesive layer is located in the groove.
  • the adhesive layer is disposed in the groove, which reduces the risk of the adhesive layer falling off from the exposed area, improves the reliability of the battery cell connection to the housing, and improves the reliability of the battery device.
  • the exposed area is provided with a protrusion that is fully embedded in the adhesive layer.
  • the technical solution of this application embodiment has a protrusion embedded in the adhesive layer, which reduces the risk of the adhesive layer falling off from the exposed area, improves the reliability of the battery cell connection to the housing, and improves the reliability of the battery device.
  • the battery device further includes a connecting layer that connects the exposed area and the adhesive layer in the thickness direction of the first wall, and the connecting layer is made of a coupling agent.
  • this application also provides an electrical device, including a battery cell of any embodiment of the first aspect or a battery device of any embodiment of the second aspect, wherein the battery cell or battery device is used to provide electrical energy to the electrical device.
  • Figure 1 is a structural schematic diagram of a vehicle provided in some embodiments of this application.
  • FIG. 2 is an exploded view of a battery device provided in some embodiments of this application.
  • Figure 3 is an exploded view of a single battery cell provided in some embodiments of this application.
  • Figure 4 is a schematic diagram of the structure of a battery cell provided in some embodiments of this application.
  • Figure 5 is a cross-sectional view of the first wall provided in some embodiments of this application.
  • Figure 6 is a cross-sectional view of the first wall provided in some other embodiments of this application.
  • Figure 7 is a cross-sectional view of the first wall provided in some embodiments of this application.
  • Figure 8 is a schematic diagram of the exposed area provided in some embodiments of this application.
  • Figure 9 is a schematic diagram of the exposed area provided in some other embodiments of this application.
  • Figure 10 is a schematic diagram of the second groove provided in some embodiments of this application.
  • Figure 11 is a schematic diagram of the second groove provided in some other embodiments of this application.
  • Figure 12 is a schematic diagram of the structure of a battery cell provided in some other embodiments of this application.
  • Figure 13 is a schematic diagram of the internal structure of a battery device provided in some embodiments of this application.
  • Figure 14 is a schematic diagram of the connection between the exposed area and the connecting component provided in some embodiments of this application;
  • Figure 15 is a schematic diagram showing the connection between the exposed area and the connecting component provided in some other embodiments of this application.
  • Figure 16 is a schematic diagram of the connection between the exposed area and the connecting component provided in some embodiments of this application.
  • Icons 1-Battery cell; 10-Casing; 11-First wall; 111-Exposed area; 1111-Groove; 1112-Protrusion; 1113-First groove; 11131-Bonding area; 1114-Second groove; 1115-First slot segment; 1116-Second slot segment; 1117-Third slot segment; 12-Second wall; 13-Side wall; 14-Casing; 141-Bottom wall; 15-End cap; 20-Electrode assembly; 30-Insulation 31-First hollow area; 32-First insulating component; 33-Second insulating component; 331-Flanged part; 34-Second hollow area; 40-Electrode terminal; 100-Battery device; 110-Box; 120-Adhesive layer; 130-Connecting component; 140-Connecting layer; 150-First sub-box; 160-Second sub-box; 1000-Vehicle; 1100-Controller; 1200-Motor
  • connection should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components.
  • connection can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components.
  • the term "and/or” is merely a description of the relationship between related objects, indicating that three relationships can exist.
  • a and/or B can represent: A existing alone, A and B existing simultaneously, or B existing alone.
  • the character "/" generally indicates that the preceding and following related objects have an "or" relationship.
  • multiple refers to two or more (including two), and similarly, “multiple groups” refers to two or more (including two), and “multiple pieces” refers to two or more (including two).
  • the battery device mentioned in the embodiments of this application may include one or more battery cell assemblies. Used to provide voltage and capacity.
  • a battery cell assembly may include multiple battery cells, which are connected in series, parallel, or mixed connections via a busbar.
  • a battery cell assembly is typically formed by arranging multiple battery cells; as an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form a single module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.
  • the battery device may be a battery pack, which includes a housing and one or more individual battery cells housed within the housing.
  • the battery cell assembly can be a battery module, which can be housed in a housing by fixing the battery module in the housing.
  • battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.
  • the enclosure may include a first enclosure and a second enclosure.
  • the first enclosure and the second enclosure are fastened together to form a closed space inside the enclosure to house the individual battery cells.
  • closed refers to covering or closing, and can be either sealed or unsealed.
  • the first enclosure may be a top cover or a bottom plate.
  • the enclosure may include a top cover, a frame, and a bottom plate.
  • the top cover and bottom plate are connected to the frame, creating an enclosed space inside the enclosure to house the individual battery cells.
  • the housing can be part of the vehicle's chassis structure.
  • the housing's roof can be at least part of the vehicle's floor, or the housing's frame can be at least part of the vehicle's crossbeams and longitudinal beams.
  • the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.
  • the battery cell may be, but is not limited to, lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc.
  • the battery cell can be a pouch cell.
  • a single battery cell typically includes an electrode assembly.
  • the electrode assembly includes a positive electrode, a negative electrode, and a separator.
  • active ions such as lithium ions
  • the separator positioned between the positive and negative electrodes, prevents short circuits while allowing active ions to pass through.
  • the positive electrode can be a positive electrode sheet, which may include a positive current collector and a positive active material disposed on at least one surface of the positive current collector.
  • the positive electrode active material may include at least one of the following materials: lithium phosphate, lithium transition metal oxide, and their respective modified compounds.
  • this application is not limited to these materials, and other conventional materials that can be used as positive electrode active materials for batteries may also be used.
  • the negative electrode can be a negative electrode sheet, and the negative electrode sheet can include a negative current collector.
  • the negative electrode current collector has two surfaces opposite each other in its own thickness direction, and the negative electrode active material is disposed on either or both of the two opposite surfaces of the negative electrode current collector.
  • the negative electrode active material may be a negative electrode active material known in the art for use in batteries.
  • the negative electrode active material may include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, and tin-based materials. Materials such as lithium titanate.
  • Silicon-based materials can be selected from at least one of elemental silicon, silicon oxides, silicon-carbon composites, silicon-nitrogen composites, and silicon alloys.
  • Tin-based materials can be selected from at least one of elemental tin, tin oxides, and tin alloys.
  • this application is not limited to these materials, and other conventional materials that can be used as negative electrode active materials in batteries can also be used.
  • These negative electrode active materials can be used alone or in combination of two or more.
  • the separator is a diaphragm.
  • This application does not impose any particular limitation on the type of diaphragm; any known porous diaphragm with good chemical and mechanical stability can be selected.
  • the main material of the separator can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramic.
  • the separator can be a single-layer film or a multi-layer composite film, without particular limitation. When the separator is a multi-layer composite film, the materials of each layer can be the same or different, without particular limitation.
  • the separator can be a separate component located between the positive and negative electrodes, or it can be attached to the surfaces of the positive and negative electrodes.
  • the separator is a solid electrolyte.
  • the solid electrolyte is disposed between the positive and negative electrodes, serving both to transport ions and to isolate the positive and negative electrodes.
  • battery cell assemblies are housed in a housing by directly fixing multiple battery cells to the housing.
  • the fixing methods include directly gluing the battery cells to the housing or gluing the battery cells to connecting components (such as pressure strips) and then connecting them to the housing through the connecting components.
  • the adhesive layer used to bond with the battery cells may detach from the battery cells, thereby affecting the reliability of the connection between the battery cells and the housing.
  • the connection between the battery cells and the housing may fail, resulting in damage to the battery cells and affecting the reliability of the battery device.
  • the battery cell includes a shell and an insulating component.
  • the shell has a first wall.
  • the insulating component covers the outer side of the shell and covers the outer surface of the first wall.
  • the insulating component is provided with a first hollow area, which is located on the side of the first wall opposite to the electrode assembly.
  • the outer surface of the first wall forms an exposed area at the position corresponding to the first hollow area, and the exposed area is provided with grooves and/or protrusions.
  • the friction between the exposed area and the adhesive layer is increased, the risk of the adhesive layer falling off from the exposed area is reduced, and the bonding reliability between the adhesive layer and the exposed area is improved, thereby improving the reliability of the battery cell connection to the housing and the reliability of the battery device.
  • the technical solutions described in the embodiments of this application are applicable to various electrical devices that use battery cells and battery devices, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships and spacecraft, etc.
  • spacecraft include airplanes, rockets, space shuttles and spacecraft.
  • the vehicle 1000 may also include a controller 1100 and a motor 1200.
  • the controller 1100 is used to control the battery device 100 to supply power to the motor 1200, for example, for the power needs of the vehicle 1000 during startup, navigation and driving.
  • the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.
  • the battery device includes battery cell modules and a power management system.
  • the battery management system is connected to the battery cell modules and is used to manage the charging and discharging of the battery cell modules.
  • the battery device 100 may further include a housing 110, within which a single battery cell 1 is housed.
  • the housing 110 provides a space for housing the single battery cell 1, and the housing 110 may employ various structures.
  • the housing 110 may include a first sub-housing 150 and a second sub-housing 160, which overlap each other, and together define a space for housing the single battery cell 1.
  • the first sub-box 150 can be a hollow structure with one end open
  • the second sub-box 160 can be a plate-like structure.
  • the second sub-box 160 covers the opening side of the first sub-box 150 so that the first sub-box 150 and the second sub-box 160 together define the accommodating space.
  • the first sub-box 150 and the second sub-box 160 can both be hollow structures with one side open, and the opening side of the first sub-box 150 covers the opening side of the second sub-box 160.
  • the battery device 100 there can be multiple battery cells 1, which can be connected in series, parallel, or in a mixed manner.
  • a mixed connection means that multiple battery cells 1 are connected in both series and parallel configurations. Multiple battery cells 1 can be directly connected in series, parallel, or in a mixed manner, and then the entire assembly of the multiple battery cells 1 is housed within the housing 110.
  • the battery device 100 can also consist of multiple battery cells 1 first connected in series, parallel, or in a mixed manner to form battery modules, and then these battery modules are connected in series, parallel, or in a mixed manner to form a whole, which is also housed within the housing 110.
  • the battery device 100 may also include other structures; for example, it may include a busbar component for electrical connection between the multiple battery cells 1.
  • the battery cell 1 can be a secondary battery or a primary battery; the battery cell 1 can also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited to these.
  • the battery cell 1 includes one or more electrode assemblies 20 and a housing 10.
  • the housing 10 may include a shell 14, the plurality of walls of the shell 14 forming a cavity for accommodating the electrode assemblies 20.
  • the shape of the shell 14 depends on the combined shape of the one or more electrode assemblies 20; for example, the shell 14 may be a hollow cuboid, cube, or regular polyhedron, and one face of the shell 14 may have an opening so that one or more electrode assemblies 20 can be placed inside the shell 14.
  • the shell 14 is filled with an electrolyte, such as an electrolyte solution.
  • the battery cell 1 may also include two electrode terminals 40, which can be disposed on the end cap 15.
  • the end cap 15 is typically flat, and the two electrode terminals 40 are fixed to the flat surface of the end cap 15, respectively being the positive electrode terminal and the negative electrode terminal.
  • the electrode assembly 20 may be single or multiple, and multiple independent electrode assemblies 20 may be disposed within the battery cell 1.
  • the battery cell 1 includes a housing 10, an electrode assembly 20, and an insulating member 30.
  • the housing 10 has a first wall 11.
  • the electrode assembly 20 is housed within the housing 10.
  • the insulating member 30 covers the outer side of the housing 10 and covers the outer surface of the first wall 11.
  • the insulating member 30 has a first hollow area 31 located on the side of the first wall 11 facing away from the electrode assembly 20.
  • An exposed area 111 is formed on the outer surface of the first wall 11 at a position corresponding to the first hollow area 31.
  • the exposed area 111 has a groove 1111 and/or a protrusion 1112.
  • the shape of the housing 10 may include, but is not limited to, a cylinder, a cuboid, or a blade shape.
  • the material of the housing 10 may include, but is not limited to, copper, iron, aluminum, steel, or aluminum alloy.
  • the housing 10 has a first wall 11, which may be one or more of the end cap 15, side wall 13, or bottom wall 141.
  • the first wall 11 may be an end cap 15.
  • the electrode assembly 20 is housed within the housing 10, and the outer surface of the first wall 11 is the surface of the first wall 11 that faces away from the electrode assembly 20.
  • the first wall 11 forms an exposed area 111 at the position corresponding to the first hollow area 31, that is, the insulating member 30 is provided with the first hollow area 31, so that the first wall 11 of the outer shell 10 has an area that is avoided by the first hollow area 31, thereby forming an exposed area 111 on the first wall 11 that is not covered by the insulating member 30.
  • the first cutout area 31 disposed on the insulating member 30 may be one or more.
  • the insulating member 30 may be provided with two first hollow areas 31, the two first hollow areas 31 being spaced apart.
  • the first wall 11 is positioned to form two corresponding exposed areas 111 on the first wall 11, thereby increasing the connection strength between the first wall 11 and the connecting member 130.
  • the first hollow area 31 can be rectangular, and correspondingly, the exposed area 111 formed on the first wall 11 is also rectangular.
  • the exposed area 111 is used to connect with the connecting member 130, and the connection between the exposed area 111 and the connecting member 130 can be by adhesive bonding.
  • Figure 6 is a cross-sectional view of the first wall provided in some other embodiments of this application.
  • the exposed area 111 may be provided with protrusions 1112.
  • the protrusions 1112 may be processed by extrusion.
  • the adhesive layer 120 when an adhesive layer 120 is provided in the exposed area 111, the adhesive layer 120 will adhere to the groove wall surface of the groove 1111, thereby increasing the contact area between the adhesive layer 120 and the exposed area 111.
  • Figure 8 is a schematic diagram of an exposed area provided in some embodiments of this application
  • Figure 9 is a schematic diagram of an exposed area provided in other embodiments of this application.
  • the groove 1111 includes a first groove 1113
  • the exposed area 111 includes a plurality of first grooves 1113
  • the plurality of first grooves 1113 form an adhesive area 11131.
  • the number of first grooves 1113 can be multiple, and the openings of the multiple first grooves 1113 can be circular, square, or other shapes.
  • the shapes of the openings of the plurality of first grooves 1113 may be all the same, all different, or partially the same.
  • the first grooves 1113 can be arranged in different ways to form an embossed pattern, which is the adhesive area 11131.
  • the embossed pattern can be the shape of a specific object, such as flowers or animals, or it can be an irregular shape. It should be noted that an adhesive layer 120 is also provided on the exposed area 111 in areas other than the adhesive area 11131.
  • the inner diameter of the first groove 1113 may remain unchanged in the thickness direction X of the first wall.
  • the inner diameter of the first groove 1113 can change in the thickness direction X of the first wall.
  • the change can be linear or irregular.
  • the technical solution of this application embodiment provides a plurality of first grooves 1113 for connection with the adhesive layer 120, which further improves the bonding reliability between the adhesive layer 120 and the exposed area 111, thereby improving the reliability of the battery cell 1 connecting to the housing 110 and improving the reliability of the battery device 100.
  • the opening of the first groove 1113 is circular, and the diameter R1 of the opening is greater than or equal to 0.4 mm and less than or equal to 1.2 mm.
  • the diameter R1 of the opening of the first groove 1113 can satisfy the condition: 0.4mm ⁇ R1 ⁇ 1.2mm.
  • R1 can be a specific value among 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.1mm, and 1.2mm, or a value between two of them.
  • the opening diameter R1 of the plurality of first grooves 1113 may be all the same, partially the same, or all different.
  • the opening diameter of the first groove 1113 meets the above conditions, which is easy to process and improves the bonding reliability between the adhesive layer 120 and the exposed area 111.
  • the diameter R1 of the opening is greater than or equal to 0.4 mm and less than or equal to 0.8 mm.
  • the diameter R1 of the opening of the first groove 1113 can satisfy the condition: 0.4mm ⁇ R1 ⁇ 0.8mm.
  • R1 can be a specific value among 0.4mm, 0.5mm, 0.6mm, 0.7mm, and 0.8mm, or a value between two of them.
  • the opening diameter of the first groove 1113 meets the above conditions, which is easy to process and further improves the bonding reliability between the adhesive layer 120 and the exposed area 111.
  • the opening of the first groove 1113 is square, and the side length A1 of the opening is greater than or equal to 0.4 mm and less than or equal to 1.2 mm.
  • the side length A1 of the opening of the first groove 1113 can satisfy the condition: 0.4mm ⁇ A1 ⁇ 1.2mm.
  • A1 can be a specific value among 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.1mm, and 1.2mm, or a value between two of them.
  • the opening side length A1 of the plurality of first grooves 1113 may be all the same, partially the same, or all different.
  • the opening side length of the first groove 1113 meets the above conditions, which is easy to process and improves the bonding reliability between the adhesive layer 120 and the exposed area 111.
  • the side length A1 of the opening is greater than or equal to 0.4 mm and less than or equal to 0.8 mm.
  • the side length A1 of the opening of the first groove 1113 can satisfy the condition: 0.4mm ⁇ A1 ⁇ 0.8mm.
  • A1 can be a specific value among 0.4mm, 0.5mm, 0.6mm, 0.7mm, and 0.8mm, or a value between two of them.
  • the opening side length of the first groove 1113 meets the above conditions, which is easy to process and further improves the bonding reliability between the adhesive layer 120 and the exposed area 111.
  • the depth D1 of the first groove 1113 is greater than or equal to 0.08 mm and less than or equal to 0.5 mm.
  • the thickness direction of the first wall can be represented by the direction indicated by the letter X in the figure.
  • the end cap 15 and the bottom wall 141 may be disposed opposite each other along the thickness direction X of the first wall.
  • the depth D1 of the first groove 1113 can satisfy the condition: 0.08mm ⁇ D1 ⁇ 0.5mm.
  • D1 can be a specific value among 0.08mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm, and 0.5mm, or a value between two of them.
  • the depth D1 of the plurality of first grooves 1113 may be all the same, partially the same, or all different.
  • the depth D1 of the first groove 1113 is less than the thickness of the first wall 11.
  • the depth of the first groove 1113 satisfies the above conditions, reducing the impact on the structural strength of the first wall 11, while improving the bonding reliability between the adhesive layer 120 and the exposed area 111.
  • the depth D1 of the first groove 1113 is greater than or equal to 0.08 mm and less than or equal to 0.2 mm.
  • the depth D1 of the first groove 1113 can satisfy the condition: 0.08mm ⁇ D1 ⁇ 0.2mm.
  • D1 can be a specific value among 0.08mm, 0.1mm, 0.12mm, 0.14mm, 0.16mm, 0.18mm, and 0.2mm, or a value between two of them.
  • the depth of the first groove 1113 satisfies the above conditions, further reducing the impact on the structural strength of the first wall 11, while improving the bonding reliability between the adhesive layer 120 and the exposed area 111.
  • a first groove segment 1115 and a second groove segment 1116 are arranged sequentially, with the first groove segment 1115 connected to one end of the second groove segment 1116 away from the electrode assembly 20.
  • the second groove 1114 may include only the first groove segment 1115 and the second groove segment 1116, with one end of the first groove segment 1115 away from the second groove segment 1116 extending to the outer surface of the first wall 11.
  • the adhesive layer 120 when the adhesive layer 120 is disposed in the exposed area 111, the adhesive layer 120 enters the first groove segment 1115 and the second groove segment 1116. Since the diameter of the first groove segment 1115 is smaller than the diameter of the second groove segment 1116, the adhesive layer 120 will contact or abut against the inner wall of the second groove segment 1116 away from the electrode assembly 20, thereby making it difficult for the adhesive layer 120 to fall off from the second groove segment 1116.
  • the diameter of the first groove segment 1115 may remain unchanged in the thickness direction X of the first wall.
  • the diameter of the first groove segment 1115 may vary in the thickness direction X of the first wall.
  • the diameter of the second groove segment 1116 may remain unchanged in the thickness direction X of the first wall.
  • the second groove 1114 may further include a third groove segment 1117.
  • the third groove segment 1117, the first groove segment 1115, and the second groove segment 1116 are arranged sequentially.
  • the first groove segment 1115 is connected to one end of the second groove segment 1116 away from the electrode assembly 20
  • the third groove segment 1117 is connected to one end of the first groove segment 1115 away from the electrode assembly 20.
  • the end of the third groove segment 1117 away from the first groove segment 1115 extends to the outer surface of the first wall 11.
  • the number of second grooves 1114 can be multiple, wherein some of the second grooves 1114 may include a first groove segment 1115, a second groove segment 1116 and a third groove segment 1117, and other parts of the second grooves 1114 may only include the first groove segment 1115 and the second groove segment 1116.
  • the number of second grooves 1114 can be multiple, and all second grooves 1114 can include a first groove segment 1115, a second groove segment 1116 and a third groove segment 1117.
  • the adhesive layer 120 when the adhesive layer 120 is disposed in the exposed area 111, the adhesive layer 120 enters the third groove segment 1117, the first groove segment 1115 and the second groove segment 1116. Since the diameter of the third groove segment 1117 is larger than the diameter of the first groove segment 1115, the contact area between the adhesive layer 120 and the connecting member 130 is larger.
  • the diameter of the third groove segment 1117 may remain unchanged in the thickness direction X of the first wall.
  • the diameter of the third groove segment 1117 may vary in the thickness direction X of the first wall.
  • the diameter of the third groove segment 1117 may vary in the thickness direction X of the first wall.
  • the diameter of the end of the third groove segment 1117 facing away from the electrode assembly 20 can be larger than the diameter of the end of the first groove segment 1115 facing away from the electrode assembly 20.
  • the adhesive layer 120 sequentially passes through the third groove segment 1117 and the first groove segment 1115 into the second groove segment 1116.
  • the diameter of the first groove segment 1115 of the second groove 1114 is smaller than the diameter of the second groove segment 1116, and the diameter of the first groove segment 1115 of the second groove 1114 is smaller than the diameter of the third groove segment 1117. This reduces the risk of the adhesive layer 120 falling off from the second groove segment 1116.
  • the adhesive layer 120 is bonded through the third groove segment 1117, increasing the bonding area and improving the bonding reliability between the adhesive layer 120 and the exposed area 111.
  • the diameter R2 of the first groove segment 1115 is greater than or equal to 1 mm and less than or equal to 3 mm.
  • the diameter R2 of the first groove segment 1115 can satisfy the condition: 1mm ⁇ R2 ⁇ 3mm.
  • R2 It can be a specific value among 1mm, 1.5mm, 2mm, 2.5mm, and 3mm, or a value between two of them.
  • the number of second grooves 1114 can be multiple, and the diameters R2 of the multiple first groove segments 1115 can all be the same, some can be the same, or all can be different.
  • the diameter of the first groove segment 1115 meets the above conditions, which makes it easy to process and reduces the risk of the adhesive layer 120 falling off from the second groove segment 1116, thereby improving the bonding reliability between the adhesive layer 120 and the exposed area 111.
  • the diameter R3 of the second groove segment 1116 is greater than or equal to 1.5 mm and less than or equal to 4 mm.
  • the diameter R3 of the second groove segment 1116 can satisfy the condition: 1.5mm ⁇ R3 ⁇ 4mm.
  • R3 can be a specific value among 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, and 4mm, or a value between two of them.
  • the number of second grooves 1114 can be multiple, and the diameters R3 of the multiple second groove segments 1116 can be all the same, partially the same, or all different.
  • the diameter of the second groove segment 1116 meets the above conditions, which makes it easy to process and reduces the risk of the adhesive layer 120 falling off from the second groove segment 1116, thereby improving the bonding reliability between the adhesive layer 120 and the exposed area 111.
  • the diameter R4 of the third groove segment 1117 is greater than or equal to 2 mm and less than or equal to 4 mm.
  • the diameter R4 of the third groove segment 1117 can satisfy the condition: 2mm ⁇ R4 ⁇ 4mm.
  • R4 can be a specific value among 2mm, 2.5mm, 3mm, 3.5mm, and 4mm, or a value between two of them.
  • the number of second grooves 1114 can be multiple, and the diameters R4 of the multiple third groove segments 1117 can be all the same, partially the same, or all different.
  • the diameter of the third groove segment 1117 satisfies the above conditions, which increases the bonding area while reducing the risk of the adhesive layer 120 falling off from the exposed area 111 and improving the bonding reliability between the adhesive layer 120 and the exposed area 111.
  • the depth D2 of the second groove 1114 is greater than or equal to 0.4 mm and less than or equal to 1.5 mm.
  • the depth D2 of the second groove 1114 can satisfy the condition: 0.4mm ⁇ D2 ⁇ 1.5mm.
  • D2 can be a specific value among 0.4mm, 0.6mm, 0.8mm, 1mm, 1.2mm, 1.4mm, and 1.5mm, or a value between two of them.
  • the depth D2 of the plurality of second grooves 1114 may be all the same, partially the same, or all different.
  • the depth D2 of the second groove 1114 is less than the thickness of the first wall 11.
  • the number of second grooves 1114 can be multiple, and the depth D2 of the multiple second grooves 1114 can be all the same, partially the same, or all different.
  • the depth of the second groove 1114 satisfies the above conditions, reducing the risk of the exposed area 111 of the adhesive layer 120 falling off, while reducing the risk of affecting the structural strength of the first wall 11, and improving the bonding reliability between the adhesive layer 120 and the exposed area 111.
  • the depth D3 of the first groove segment 1115 is greater than or equal to 0.2 mm and less than or equal to 0.75 mm.
  • the depth D3 of the first groove segment 1115 can satisfy the condition: 0.2mm ⁇ D3 ⁇ 0.75mm.
  • D3 can be a specific value among 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, and 0.75mm, or a value between two of them.
  • the number of second grooves 1114 can be multiple, and the depth D3 of the first groove segment 1115 of the multiple second grooves 1114 can be all the same, partially the same, or all different.
  • the depth of the first groove 1115 meets the above conditions, which makes it easy to process while reducing the risk of the adhesive layer 120 falling off from the second groove 1116 and improving the bonding reliability between the adhesive layer 120 and the exposed area 111.
  • the depth D4 of the second groove segment 1116 is greater than that in the thickness direction X of the first wall. It is 0.1 mm or less than or equal to 0.4 mm.
  • the depth D4 of the second groove segment 1116 can satisfy the condition: 0.1mm ⁇ D4 ⁇ 0.4mm.
  • D4 can be a specific value among 0.1mm, 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, and 0.4mm, or a value between two of them.
  • the number of second grooves 1114 can be multiple, and the depth D4 of the second groove segments 1116 of the multiple second grooves 1114 can be all the same, partially the same, or all different.
  • the depth of the second groove 1116 meets the above conditions, which makes it easy to process while reducing the risk of the adhesive layer 120 falling off from the second groove 1116 and improving the bonding reliability between the adhesive layer 120 and the exposed area 111.
  • the depth D5 of the third groove segment 1117 is greater than or equal to 0.1 mm and less than or equal to 0.4 mm.
  • the depth D5 of the third groove segment 1117 can satisfy the condition: 0.1mm ⁇ D3 ⁇ 0.4mm.
  • D5 can be a specific value among 0.1mm, 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, and 0.4mm, or a value between two of them.
  • the number of second grooves 1114 can be multiple, and the depth D5 of the third groove segment 1117 of the multiple second grooves 1114 can be all the same, partially the same, or all different.
  • the depth of the third groove 1117 meets the above conditions, which makes it easy to process and reduces the risk of the adhesive layer 120 falling off from the exposed area 111, thereby improving the bonding reliability between the adhesive layer 120 and the exposed area 111.
  • the housing 10 further includes a second wall 12 and a side wall 13.
  • the second wall 12 is disposed opposite to the first wall 11, and the side wall 13 surrounds the first wall 11 and the second wall 12.
  • the insulating member 30 includes a separately disposed first insulating member 32 and a second insulating member 33.
  • the first insulating member 32 covers a portion of the outer surface of the first wall 11, and the second insulating member 33 covers at least a portion of the outer surface of the second wall 12 and at least a portion of the outer surface of the side wall 13.
  • the second wall 12 is disposed opposite to the first wall 11, and the side wall 13 is disposed around the first wall 11 and the second wall 12. That is, the first wall 11 and the second wall 12 are disposed at intervals along the thickness direction X of the first wall and are respectively disposed at both ends of the side wall 13.
  • the side wall 13 is disposed around the first wall 11 along the circumference of the first wall 11 and around the second wall 12 along the circumference of the second wall 12.
  • the structure of the outer shell 10 can be various. It can be that the first wall 11, the second wall 12 and the side wall 13 are all separate structures, or the second wall 12 and the side wall 13 are integrally formed structures with the first wall 11 connected to the end of the side wall 13 away from the first wall 11, or the first wall 11 and the side wall 13 are integrally formed structures with the second wall 12 connected to the end of the side wall 13 away from the second wall 12.
  • the first insulating member 32 covers the outer surface of the first wall 11 away from the electrode assembly 20, that is, the first insulating member 32 is disposed on the first wall 11 and located on the side of the first wall 11 away from the interior of the battery cell 1.
  • the second insulating member 33 covers the outer surface of the second wall 12 away from the electrode assembly 20 and the outer surface of the side wall 13 away from the electrode assembly 20. That is, the second insulating member 33 is disposed on the housing 14 formed by the second wall 12 and the side wall 13, and is located on the side of the housing 14 away from the interior of the battery cell 1.
  • the first insulating member 32 may cover the entire surface of the first wall 11, and the first hollow area 31 may be disposed on the first insulating member 32.
  • the first insulating member 32 may cover a portion of the surface of the first wall 11, and the first hollow area 31 may be disposed on the first insulating member 32.
  • the first insulating member 32 may cover a portion of the surface of the first wall 11, and the second insulating member 33 may also cover a portion of the surface of the first wall 11.
  • the first insulating member 32 and the second insulating member 33 do not contact each other, and the edge of the second insulating member 33 and the edge of the first insulating member 32 together define the first hollow area 31.
  • the first insulating member 32 may cover a portion of the surface of the first wall 11, and the second insulating member 33 may also cover a portion of the surface of the first wall 11.
  • the first insulating member 32 and the second insulating member 33 do not contact each other, and the first hollow area 31 may be disposed on the first insulating member 32.
  • the technical solution of this application embodiment involves setting the insulator as a separate first insulating member 32 and a second insulating member 33.
  • the first insulating member 32 has a structure covering the first wall 11, and the second insulating member 33 has a structure covering the side wall 13 and the second wall 12.
  • the first insulating member 32 and the second insulating member 33 of the insulating member 30 are respectively provided with the first wall 11 of the outer shell 10 and the second wall 12 and the side wall 13 of the outer shell 10, which helps to reduce the assembly difficulty between the insulating member 30 and the outer shell 10.
  • the second insulating member 33 has a flange 331, which is arranged circumferentially along the first wall 11 and located on the outer surface of the first wall 11.
  • the flange 331 and the edge of the first insulating member 32 together enclose the first hollow area 31.
  • the second insulating member 33 has a flange 331, which is disposed circumferentially along the first wall 11 and located on the side of the first wall 11 away from the electrode assembly 20. That is, a portion of the second insulating member 33 disposed on the outside of the housing 14 formed by the second wall 12 and the side wall 13 is folded onto the first wall 11 so that the second insulating member 33 forms a flange 331 on the outer surface of the first wall 11, and the flange 331 is an annular structure extending circumferentially along the first wall 11.
  • the flange portion 331 and the edge of the first insulating member 32 together enclose and form a first hollow area 31, that is, the first hollow area 31 is formed by the flange portion 331 of the annular structure and the edge of the first insulating member 32 disposed on the outer surface of the first wall 11.
  • the inner edge of the flange portion 331 and the outer edge of the first insulating member 32 together define the first hollow area 31.
  • the second insulating member 33 has a flanged portion 331 disposed circumferentially on the first wall 11 and located at the edge of the first wall 11, such that the edge of the first insulating member 32 disposed on the first wall 11 and a portion of the flanged portion 331 together enclose and form a first hollow area 31, thereby forming an exposed area 111 on the first wall 11.
  • the battery cell 1 with this structure does not need to set the first insulating member 32 as a structure with through holes, which is beneficial to improving the overall structural strength of the first insulating member 32.
  • the battery cell 1 further includes an electrode terminal 40, which is disposed on the first wall 11.
  • the insulating member 30 is provided with a second hollow area 34, which is spaced apart from the first hollow area 31, and the electrode terminal 40 passes through the second hollow area 34.
  • the second cutout area 34 is spaced apart from the first cutout area 31, that is, the electrode terminal 40 disposed on the first wall 11 is spaced apart from the first cutout area 31, and a portion of the insulating member 30 is located between the electrode terminal 40 and the first cutout area 31.
  • the electrode terminal 40 is disposed on the first wall 11, and the insulating member 30 is provided with a second hollow area 34 through which the power supply terminal 40 passes at the position corresponding to the electrode terminal 40.
  • the second hollow area 34 and the first hollow area 31 can be set alternately with the electrode terminal 40, so as to reduce the interference between the exposed area 111 and the electrode terminal 40 when it is connected to the external component.
  • the outer casing 10 includes a housing 14 and an end cap 15.
  • the housing 14 includes a bottom wall 141 and a plurality of side walls 13.
  • the bottom wall 141 and the end cap 15 are disposed opposite each other along the thickness direction X of the first wall.
  • the plurality of side walls 13 surround the bottom wall 141.
  • One end of the plurality of side walls 13 is connected to the bottom wall 141, and the other end forms an opening.
  • the end cap 15 closes the opening and is the first wall 11.
  • the second wall 12 and the side wall 13 enclose a hollow structure with one end open in the thickness direction X of the first wall, and the first wall 11 covers the opening to form a housing 10 for accommodating the electrode assembly 20.
  • the second wall 12 and the side wall 13 may also be a split structure, that is, the side wall 13 is a hollow structure with openings at both ends in the thickness direction X of the first wall, and the first wall 11 and the second wall 12 respectively cover the two openings of the side wall 13.
  • the second wall 12 and the side wall 13 are integrally formed, that is, the second wall 12 and the side wall 13 of the outer shell 10 are made by an integral forming process, such as stamping or casting.
  • the end cap 15 is a first wall 11, which increases the friction between the end cap 15 and the adhesive layer 120, reduces the risk of the adhesive layer 120 falling off the end cap 15, improves the bonding reliability between the adhesive layer 120 and the end cap 15, thereby improving the reliability of the end cap 15 connecting to the housing 110 and improving the reliability of the battery device 100.
  • Figure 13 is a schematic diagram of the internal structure of a battery device provided in some embodiments of this application.
  • Figure 14 is a schematic diagram of the connection between the exposed area and the connecting component provided in some embodiments of this application.
  • Figure 15 is a schematic diagram of the connection between the exposed area and the connecting component provided in other embodiments of this application.
  • the first sub-box is hidden to facilitate the demonstration of the internal structure of the battery device.
  • This application also provides a battery device 100.
  • the battery device 100 includes a box 110, an adhesive layer 120, a connecting component 130, and a battery cell 1 from any of the above embodiments.
  • the battery cell 1 is disposed within the box 110.
  • the adhesive layer 120 is disposed in the exposed area 111.
  • the connecting component 130 is disposed within the box 110. In the thickness direction X of the first wall, at least one side of the connecting component 130 is connected to the adhesive layer 120 to connect multiple battery cells 1.
  • the battery cell 1 is placed inside the housing 110, that is, the second wall 12 of the battery cell 1 is configured to support the electrode assembly 20, such that the second wall 12 can support the electrode assembly 20 in the thickness direction X of the first wall. That is to say, the first wall 11 of the outer casing 10 is set facing the top of the box 110, and the second wall 12 of the outer casing 10 is set facing the bottom of the box 110. Or, in actual use, the second wall 12 of the outer casing 10 is set facing the ground or downward, so that the thickness direction X of the first wall is the vertical direction.
  • the connecting component 130 is disposed between the first wall 11 and the top of the housing 110 in the thickness direction X of the first wall, and the connecting component 130 is bonded to the exposed area 111 formed by the first wall 11.
  • the connecting member 130 may be a pressure strip.
  • the connecting component 130 is made of an insulating material, such as rubber, plastic, or silicone.
  • the connecting component 130 with this structure can achieve an insulating connection between the connecting component 130 and the battery cell 1, thereby reducing the risk of leakage or short circuit.
  • the battery cell 1 may also be placed upside down inside the housing 110, that is, the first wall 11 of the battery cell 1 is configured to support the electrode assembly 20, so that the first wall 11 can support the electrode assembly 20 in the thickness direction X of the first wall, so that the connecting member 130 is disposed between the first wall 11 and the bottom of the housing 110 in the thickness direction X of the first wall, and the exposed area 111 formed by the connecting member 130 and the first wall 11 is bonded.
  • the adhesive layer 120 may be an adhesive layer.
  • one surface of the adhesive layer 120 is bonded to the exposed area 111, and the other surface is bonded to the connecting member 130, such that the connecting member 130 connects a plurality of battery cells 1 to the side facing the battery cell 1.
  • the adhesive layer 120 is disposed in the exposed area 111, thereby connecting the battery cell 1 and the connecting component 130, improving the reliability of the battery cell 1 connecting to the housing 110, and improving the reliability of the battery device 100.
  • the exposed area 111 is provided with a groove 1111, and at least a portion of the adhesive layer 120 is located in the groove 1111.
  • the groove 1111 of the exposed area 111 may be completely filled with the adhesive layer 120.
  • a portion of the space in the groove 1111 of the exposed area 111 may be filled by the adhesive layer 120.
  • the adhesive layer 120 is disposed in the groove 1111, which reduces the risk of the adhesive layer 120 falling off from the exposed area 111, improves the reliability of the battery cell 1 connecting to the housing 110, and improves the reliability of the battery device 100.
  • the exposed area 111 is provided with a protrusion 1112, which is completely embedded in the adhesive layer 120.
  • the entire outer surface of the protrusion 1112 in the exposed area 111 is in contact with the adhesive layer 120.
  • the protrusion 1112 is embedded in the adhesive layer 120, which reduces the risk of the adhesive layer 120 falling off from the exposed area 111, improves the reliability of the battery cell 1 connecting to the housing 110, and improves the reliability of the battery device 100.
  • the battery device 100 further includes a connecting layer 140, which connects the exposed area 111 and the adhesive layer 120 in the thickness direction X of the first wall.
  • the material of the connecting layer 140 is a coupling agent.
  • the outer casing 10 may be made of metal.
  • the housing 10 may be made of aluminum.
  • the adhesive layer 120 may be made of synthetic resin.
  • the coupling agent has properties that are both adhesive-friendly and metal-friendly.
  • the molecule of the coupling agent simultaneously contains reactive groups that can chemically bond with inorganic materials (such as glass, silica sand, metals, etc.) and reactive groups that can chemically bond with organic materials (such as synthetic resins).
  • one surface of the connecting layer 140 may be connected to the exposed area 111, and the other surface may be connected to the adhesive layer 120.
  • the connecting layer 140 may not have obvious delamination with the adhesive layer 120, that is, both the connecting layer 140 and the adhesive layer 120 may be in contact with the exposed area 111 and may be in contact with the connecting component 130.
  • the coupling agent has the properties of affinity for adhesive layer 120 and affinity for metal.
  • the outer shell 10 of the battery cell 1 is metal, and the connecting layer 140 is a coupling agent.
  • the connecting layer 140 connects the adhesive layer 120 and the exposed area 111, reducing the risk of the adhesive layer 120 falling off from the exposed area 111, improving the reliability of the battery cell 1 connected to the housing 110, and improving the reliability of the battery device 100.
  • This application also provides an electrical device, including a battery or a battery device 100 of any of the above embodiments, wherein the battery cell 1 or the battery device 100 is used to provide electrical energy to the electrical device.
  • the battery cell 1 includes an electrode assembly 20, a housing 10, and an insulating member 30.
  • the electrode assembly 20 is disposed within the housing 10.
  • the housing 10 includes a shell 14 and an end cap 15.
  • the shell 14 has an opening, and the end cap 15 closes the opening of the shell 14.
  • the insulating member 30 covers the outside of the housing 10 and covers the outer surface of the end cap 15.
  • the insulating member 30 has a first hollow area 31 located on the side of the end cap 15 opposite to the electrode assembly 20.
  • the outer surface of the end cap 15 forms an exposed area 111 at a position corresponding to the first hollow area 31, and the exposed area 111 has a groove 1111.
  • the groove 1111 includes a first groove 1113 and a second groove 1114.
  • Each second groove 1114 includes a first groove segment 1115, a second groove segment 1116, and a third groove segment 1117, which are sequentially connected along the thickness direction X of the first wall.
  • One end of the third groove segment 1117 extends to the outer surface of the end cap 15.
  • the diameter of the first groove segment 1115 is smaller than the diameter of the third groove segment 1117, and the diameter of the first groove segment 1115 is smaller than the diameter of the second groove segment 1116.
  • the friction between the exposed area 111 and the adhesive layer 120 is increased, reducing the risk of the adhesive layer 120 falling off from the exposed area 111 and improving the bonding reliability between the adhesive layer 120 and the exposed area 111. This, in turn, improves the reliability of the battery cell 1 connecting to the housing 110 and the reliability of the battery device 100.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

一种电池单体(1)、电池装置(100)及用电装置，电池单体(1)包括外壳(10)、电极组件(20)和绝缘件(30)。外壳(10)具有第一壁(11)。电极组件(20)容纳于外壳(10)内。绝缘件(30)包覆于外壳(10)的外侧，且覆盖第一壁(11)的外表面。其中，绝缘件(30)设置有第一镂空区(31)，第一镂空区(31)位于第一壁(11)背离电极组件(20)的一侧，第一壁(11)的外表面在对应第一镂空区(31)的位置形成裸露区(111)，裸露区(111)设置有凹槽(1111)和/或凸起(1112)，能够提高电池的可靠性。

Description

电池单体、电池装置及用电装置 技术领域
本申请涉及电池生产技术领域，具体而言，涉及一种电池单体、电池装置及用电装置。
背景技术
节能减排是汽车产业可持续发展的关键，电动车辆由于其节能环保的优势成为汽车产业可持续发展的重要组成部分。对于电动车辆而言，电池技术又是关乎其发展的一项重要因素。
在电池技术的发展中，如何提高电池装置的可靠性，是电池技术中一个亟需解决的技术问题。
发明内容
本申请提供一种电池单体、电池装置及用电装置，其能够提高电池装置的可靠性。
本申请是通过下述技术方案实现的：
第一方面，本申请提供一种电池单体。电池单体包括外壳、电极组件和绝缘件。外壳具有第一壁。电极组件容纳于外壳内。绝缘件包覆于外壳的外侧，且覆盖第一壁的外表面。其中，绝缘件设置有第一镂空区，第一镂空区位于第一壁背离电极组件的一侧，第一壁的外表面在对应第一镂空区的位置形成裸露区，裸露区设置有凹槽和/或凸起。
本申请实施例的技术方案，电池单体通过粘接层与箱体连接形成电池装置，通过在裸露区设置凹槽和/或凸起，增大裸露区与粘接层的摩擦力，降低粘接层从裸露区脱落的风险，提高粘接层与裸露区的粘接可靠性，从而提高电池单体连接箱体的可靠性，提高电池装置的可靠性。
在一些实施例中，凹槽包括第一凹槽，裸露区包括多个第一凹槽，多个第一凹槽形成粘接区域。
本申请实施例的技术方案，设置多个第一凹槽用于与粘接层连接，进一步提高粘接层与裸露区的粘接可靠性，从而提高电池单体连接箱体的可靠性，提高电池装置的可靠性。
在一些实施例中，第一凹槽的开口呈圆形，第一凹槽的开口的直径R1大于或等于0.4mm，且小于或等于1.2mm。
本申请实施例的技术方案，第一凹槽的开口直径满足上述条件，易于加工的同时，提高粘接层与裸露区的粘接可靠性。
在一些实施例中，第一凹槽的开口的直径R1大于或等于0.4mm，且小于或等于0.8mm。
本申请实施例的技术方案，第一凹槽的开口直径满足上述条件，易于加工的同时，进一步提高粘接层与裸露区的粘接可靠性。
在一些实施例中，第一凹槽的开口呈正方形，第一凹槽的开口的边长A1大于或等于0.4mm，且小于或等于1.2mm。
本申请实施例的技术方案，第一凹槽的开口边长满足上述条件，易于加工的同时，提高粘接层与裸露区的粘接可靠性。
在一些实施例中，第一凹槽的开口的边长A1大于或等于0.4mm，且小于或等于0.8mm。
本申请实施例的技术方案，第一凹槽的开口边长满足上述条件，易于加工的同时，进一步提高粘接层与裸露区的粘接可靠性。
在一些实施例中，在第一壁的厚度方向上，第一凹槽的深度D1大于或等于0.08mm，且小于或等于0.5mm。
本申请实施例的技术方案，第一凹槽的深度满足上述条件，降低对第一壁结构强度的影响，同时提高粘接层与裸露区的粘接可靠性。
在一些实施例中，在第一壁的厚度方向上，第一凹槽的深度D1大于或等于0.08mm，且小于或等于0.2mm。
本申请实施例的技术方案，第一凹槽的深度满足上述条件，进一步降低对第一壁结构强度 的影响，同时提高粘接层与裸露区的粘接可靠性。
在一些实施例中，凹槽包括第二凹槽，第二凹槽包括第一槽段和第二槽段，第一槽段和第二槽段沿第一壁的厚度方向排布，第一槽段相较于第二槽段更靠近第一壁的外表面。其中，第一槽段的直径小于第二槽段的直径。
本申请实施例的技术方案，粘接层从第一槽段进入第二槽段中，第二凹槽的第一槽段的直径小于第二槽段的直径，降低粘接层由第二槽段中脱落的风险，提高粘接层与裸露区的粘接可靠性。
在一些实施例中，第二凹槽包括第三槽段，第三槽段、第一槽段和第二槽段沿第一壁的厚度方向依次排布，第三槽段的一端延伸至第一壁的外表面，另一端与第一槽段连通。其中，第一槽段的直径小于第三槽段的直径。
本申请实施例的技术方案，粘接层依次经过第三槽段、第一槽段进入第二槽段中，第二凹槽的第一槽段的直径小于第二槽段的直径，第二凹槽的第一槽段的直径小于第三槽段的直径，降低粘接层由第二槽段中脱落的风险，通过第三槽段的粘接层进行粘接，增大粘接面积，提高粘接层与裸露区的粘接可靠性。
在一些实施例中，第一槽段的直径R2大于或等于1mm，且小于或等于3mm。
本申请实施例的技术方案，第一槽段的直径满足上述条件，易于加工的同时，降低粘接层由第二槽段中脱落的风险，提高粘接层与裸露区的粘接可靠性。
在一些实施例中，第二槽段的直径R3大于或等于1.5mm，且小于或等于4mm。
本申请实施例的技术方案，第二槽段的直径满足上述条件，易于加工的同时，降低粘接层由第二槽段中脱落的风险，提高粘接层与裸露区的粘接可靠性。
在一些实施例中，第三槽段的直径R4大于或等于2mm，且小于或等于4mm。
本申请实施例的技术方案，第三槽段的直径满足上述条件，增大粘接面积的同时，降低粘接层由裸露区脱落的风险，提高粘接层与裸露区的粘接可靠性。
在一些实施例中，在第一壁的厚度方向上，第二凹槽的深度D2大于或等于0.4mm，且小于或等于1.5mm。
本申请实施例的技术方案，第二凹槽的深度满足上述条件，降低粘接层裸露区脱落的风险，同时降低影响第一壁结构强度的风险，提高粘接层与裸露区的粘接可靠性。
在一些实施例中，在第一壁的厚度方向上，第一槽段的深度D3大于或等于0.2mm，且小于或等于0.75mm。
本申请实施例的技术方案，第一槽段的深度满足上述条件，易于加工的同时，降低粘接层由第二槽段中脱落的风险，提高粘接层与裸露区的粘接可靠性。
在一些实施例中，在第一壁的厚度方向上，第二槽段的深度D4大于或等于0.1mm，且小于或等于0.4mm。
本申请实施例的技术方案，第二槽段的深度满足上述条件，易于加工的同时，降低粘接层由第二槽段中脱落的风险，提高粘接层与裸露区的粘接可靠性。
在一些实施例中，在第一壁的厚度方向上，第三槽段的深度D5大于或等于0.1mm，且小于或等于0.4mm。
本申请实施例的技术方案，第三槽段的深度满足上述条件，易于加工的同时，降低粘接层由裸露区脱落的风险，提高粘接层与裸露区的粘接可靠性。
在一些实施例中，外壳还包括第二壁和侧壁，沿第一壁的厚度方向，第二壁与第一壁相对设置，侧壁围设于第一壁和第二壁的周围。绝缘件包括分体设置的第一绝缘件和第二绝缘件，第一绝缘件覆盖第一壁的部分外表面，第二绝缘件覆盖第二壁的至少部分外表面和侧壁的至少部分外表面。
本申请实施例的技术方案，通过将绝缘体设置为分体设置的第一绝缘件和第二绝缘件，第一绝缘件为覆盖第一壁的结构，第二绝缘件为覆盖侧壁和第二壁的结构，使得绝缘件的第一绝缘件和第二绝缘件分别与外壳的第一壁以及外壳的第二壁和侧壁对应设置，从而有利于降低绝缘件与外壳之间的装配难度。
在一些实施例中，第二绝缘件具有翻边部，翻边部沿第一壁的周向设置并位于第一壁的外表面，翻边部与第一绝缘件的边缘共同围合形成第一镂空区。
本申请实施例的技术方案，第二绝缘件具有沿第一壁的周向设置于第一壁且位于第一壁的边缘的翻边部，使得设置于第一壁上的第一绝缘件的边缘与翻边部的部分共同围合形成第一镂空区，以在第一壁上形成裸露区，采用这种结构的电池单体一方面无需将第一绝缘件设置为具有通孔的结构，有利于提高第一绝缘件的整体结构强度，另一方面有利于控制第一镂空区的大小和尺寸。
在一些实施例中，电池单体还包括电极端子，电极端子设置于第一壁。绝缘件设置有第二镂空区，第二镂空区与第一镂空区间隔设置，电极端子穿设于第二镂空区。
本申请实施例的技术方案，电极端子设置于第一壁上，且绝缘件对应电极端子的位置设置有供电极端子穿过的第二镂空区，通过将第二镂空区与第一镂空区间隔设置，一方面使得第一壁对应第一镂空区形成的裸露区能够与电极端子间隔设置，以减少裸露区与外部部件相连时与电极端子之间的干涉影响。
在一些实施例中，外壳包括壳体和端盖，壳体包括底壁和多个侧壁，底壁和端盖沿第一壁的厚度方向相对设置，多个侧壁围设于底壁的周围，多个侧壁的一端连接于底壁，另一端形成开口，端盖封闭开口，端盖为第一壁。
本申请实施例的技术方案，端盖为第一壁，增大端盖与粘接层的摩擦力，降低粘接层从端盖脱落的风险，提高粘接层与端盖的粘接可靠性，从而提高端盖连接箱体的可靠性，提高电池装置的可靠性。
第二方面，本申请还提供一种电池装置。电池装置包括箱体、粘接层、连接部件和第一方面中任一实施例的电池单体。电池单体设置于箱体内。粘接层设置于裸露区。连接部件，设置于箱体内，在第一壁的厚度方向上，连接部件的至少一侧连接粘接层，以连接多个电池单体。
本申请实施例的技术方案，粘接层设置于裸露区，从而连接电池单体和连接部件，提高电池单体连接箱体的可靠性，提高电池装置的可靠性。
在一些实施例中，裸露区设置有凹槽，粘接层的至少部分位于凹槽中。
本申请实施例的技术方案，粘接层设置于凹槽内，降低粘接层从裸露区脱落的风险，提高电池单体连接箱体的可靠性，提高电池装置的可靠性。
在一些实施例中，裸露区设置有凸起，凸起完全嵌入粘接层中。
本申请实施例的技术方案，凸起嵌入粘接层中，降低粘接层从裸露区脱落的风险，提高电池单体连接箱体的可靠性，提高电池装置的可靠性。
在一些实施例中，电池装置还包括连接层，在第一壁的厚度方向上，连接层连接裸露区和粘接层，连接层的材质为偶联剂。
本申请实施例的技术方案，偶联剂具有亲和粘接层和亲和金属的性能，电池单体的外壳为金属，连接层为偶联剂，通过连接层连接粘接层和裸露区，降低粘接层从裸露区脱落的风险，提高电池单体连接箱体的可靠性，提高电池装置的可靠性。
第三方面，本申请还提供一种用电装置，包括第一方面中任一实施例的电池单体或第二方面中任一实施例的电池装置，电池单体或电池装置用于为用电装置提供电能。
本申请的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本申请的某些实施例，因此不应被看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。
图1为本申请一些实施例提供的车辆的结构示意图；
图2为本申请一些实施例提供的电池装置的爆炸图；
图3为本申请一些实施例提供的电池单体的爆炸图；
图4为本申请一些实施例提供的电池单体的结构示意图；
图5为本申请一些实施例提供的第一壁的剖视图；
图6为本申请另一些实施例提供的第一壁的剖视图；
图7为本申请又一些实施例提供的第一壁的剖视图；
图8为本申请一些实施例提供的裸露区的示意图；
图9为本申请另一些实施例提供的裸露区的示意图；
图10为本申请一些实施例提供的第二凹槽的示意图；
图11为本申请另一些实施例提供的第二凹槽的示意图；
图12为本申请另一些实施例提供的电池单体的结构示意图；
图13为本申请一些实施例提供的电池装置的内部结构示意图；
图14为本申请一些实施例提供的裸露区与连接部件连接的示意图；
图15为本申请另一些实施例提供的裸露区与连接部件连接的示意图；
图16为本申请又一些实施例提供的裸露区与连接部件连接的示意图。
图标：1-电池单体；10-外壳；11-第一壁；111-裸露区；1111-凹槽；1112-凸起；1113-第一凹槽；11131-粘接区域；1114-第二凹槽；1115-第一槽段；1116-第二槽段；1117-第三槽段；12-第二壁；13-侧壁；14-壳体；141-底壁；15-端盖；20-电极组件；30-绝缘件；31-第一镂空区；32-第一绝缘件；33-第二绝缘件；331-翻边部；34-第二镂空区；40-电极端子；100-电池装置；110-箱体；120-粘接层；130-连接部件；140-连接层；150-第一子箱体；160-第二子箱体；1000-车辆；1100-控制器；1200-马达；X-第一壁的厚度方向。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
除非另有定义，本申请所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同；本申请中在申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限定本申请；本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。本申请的说明书和权利要求书或上述附图中的术语“第一”、“第二”等是用于区别不同对象，而不是用于描述特定顺序或主次关系。
在本申请中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本申请所描述的实施例可以与其它实施例相结合。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“附接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
本申请中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本申请中字符“/”，一般表示前后关联对象是一种“或”的关系。
本申请中出现的“多个”指的是两个以上(包括两个)，同理，“多组”指的是两组以上(包括两组)，“多片”指的是两片以上(包括两片)。
本申请的实施例所提到的电池装置(Battery Apparatus)可包括一个或多个电池单体组件， 用于提供电压和容量。电池单体组件(Battery Cell Assembly)可包括多个电池单体，多个电池单体通过汇流部件串联、并联或混联连接。
在一些实施例中，电池单体组件(Battery Cell Assembly)通常由多个电池单体排列形成；作为示例，电池单体组件可以为电池模组(Battery Module)，电池模组由多个电池单体排列并固定形成一个独立模块。作为示例，电池模组可以通过扎带捆绑多个电池单体形成。
在一些实施例中，电池装置可以为电池包(battery Pack)，电池包包括箱体和一个或多个电池单体组件，电池单体组件容纳于箱体中。
作为示例，电池单体组件可以为电池模组，电池单体组件可通过将电池模组固定于箱体中的方式容纳于箱体中。
作为示例，电池单体组件也可通过将多个电池单体直接固定于箱体的方式容纳于箱体中。
作为示例，箱体可包括第一箱体和第二箱体。第一箱体和第二箱体扣合，使得箱体内部形成封闭空间，以收纳电池单体组件。这里的封闭指盖住或关闭，可以是密封，也可以是非密封。第一箱体可为顶盖或者底板。
作为示例，箱体可包括顶盖、框架和底板。顶盖和底板分别与框架连接，使得箱体内部形成封闭空间，以收纳电池单体组件。
作为示例，箱体可以作为车辆的底盘结构的一部分。例如，箱体的顶盖可以成为车辆的地板的至少一部分，或者，箱体的框架可以成为车辆的横梁和纵梁的至少一部分。
在一些实施例中，电池装置指储能装置，储能装置包括箱体，箱体的至少一侧设有门。储能装置包括储能集装箱、储能电柜等。
本申请实施例中，电池单体可以为二次电池，二次电池是指在电池单体放电后可通过充电的方式使活性材料激活而继续使用的电池单体。
电池单体可以但不限于为锂离子电池、钠离子电池、钠锂离子电池、锂金属电池、钠金属电池、锂硫电池、镁离子电池、镍氢电池、镍镉电池、铅蓄电池等。
作为示例，电池单体可以为软包电池单体。
电池单体一般包括电极组件。电极组件包括正极、负极以及隔离件。在电池单体充放电过程中，活性离子(例如锂离子)在正极和负极之间往返嵌入和脱出。隔离件设置在正极和负极之间，可以起到防止正负极短路的作用，同时可以使活性离子通过。
在一些实施例中，正极可以为正极极片，正极极片可以包括正极集流体以及设置在正极集流体至少一个表面的正极活性材料。
作为示例，正极集流体具有在其自身厚度方向相对的两个表面，正极活性材料设置在正极集流体相对的两个表面的任意一者或两者上。
作为示例，正极集流体可采用金属箔片或复合集流体。例如，作为金属箔片，可以采用表面镀银处理的铝、表面镀银处理的不锈钢、不锈钢、铜、铝、镍、炭精电极、碳、镍或钛等。复合集流体可包括高分子材料基层和金属层。复合集流体可通过将金属材料(铝、铝合金、镍、镍合金、钛、钛合金、银及银合金等)形成在高分子材料基材(如聚丙烯、聚对苯二甲酸乙二醇酯、聚对苯二甲酸丁二醇酯、聚苯乙烯、聚乙烯等的基材)上而形成。
作为示例，正极活性材料可包括以下材料中的至少一种：含锂磷酸盐、锂过渡金属氧化物及其各自的改性化合物。但本申请并不限定于这些材料，还可以使用其他可被用作电池正极活性材料的传统材料。
在一些实施例中，负极可以为负极极片，负极极片可以包括负极集流体。
作为示例，负极集流体可采用金属箔片或复合集流体。例如，作为金属箔片，可以采用表面镀银处理的铝、表面镀银处理的不锈钢、不锈钢、铜、铝、镍、炭精电极、用碳、镍或钛等。
在一些实施例中，负极集流体具有在其自身厚度方向相对的两个表面，负极活性材料设置在负极集流体相对的两个表面中的任意一者或两者上。
作为示例，负极活性材料可采用本领域公知的用于电池的负极活性材料。作为示例，负极活性材料可包括以下材料中的至少一种：人造石墨、天然石墨、软炭、硬炭、硅基材料、锡基材 料和钛酸锂等。硅基材料可选自单质硅、硅氧化合物、硅碳复合物、硅氮复合物以及硅合金中的至少一种。锡基材料可选自单质锡、锡氧化合物以及锡合金中的至少一种。但本申请并不限定于这些材料，还可以使用其他可被用作电池负极活性材料的传统材料。这些负极活性材料可以仅单独使用一种，也可以将两种以上组合使用。
在一些实施方式中，隔离件为隔膜。本申请对隔膜的种类没有特别的限制，可以选用任意公知的具有良好的化学稳定性和机械稳定性的多孔结构隔膜。
作为示例，隔膜的主要材质可选自玻璃纤维、无纺布、聚乙烯、聚丙烯及聚偏二氟乙烯，陶瓷中的至少一种。隔膜可以是单层薄膜，也可以是多层复合薄膜，没有特别限制。在隔膜为多层复合薄膜时，各层的材料可以相同或不同，没有特别限制。隔离件可以是单独的一个部件位于正负极之间，也可以附着在正负极的表面。
在一些实施方式中，隔离件为固态电解质。固态电解质设于正极和负极之间，同时起到传输离子和隔离正负极的作用。
目前，从市场形势的发展来看，电池装置已被广泛应用于电动自行车、电动摩托车、电动汽车等电动交通工具，以及电动工具、无人机、储能设备等多个领域。随着电池用领域的不断扩大，其市场的需求量也在不断地扩增。
电池技术的发展要同时考虑多方面的设计因素，例如，能量密度、循环寿命、放电容量、充放电倍率等性能参数，另外，随着环境条件和/或电池内部条件的改变，电池装置的可靠性问题也是重点考虑的因素之一。
目前，电池单体组件通过将多个电池单体直接固定于箱体的方式容纳于箱体中，固定的方式为通过将电池单体直接粘接于箱体，或者是通过将电池单体粘接于连接部件(比如压条)后，通过连接部件与箱体连接。
然而，当电池装置受到外部冲击或者是在一段时间之后，用于与电池单体粘接的粘接层存在从电池单体脱落的风险，从而影响电池单体连接箱体的可靠性，存在电池单体与箱体连接失效从而导致电池单体损坏的风险，影响电池装置的可靠性。
基于上述考虑，为了解决粘接层从电池单体脱落导致电池单体与箱体连接失效从而影响电池装置的可靠性差的问题，本申请实施例提供了一种电池单体。电池单体包括外壳和绝缘件。外壳具有第一壁。绝缘件包覆于外壳的外侧，且覆盖第一壁的外表面。其中，绝缘件设置有第一镂空区，第一镂空区位于第一壁背离电极组件的一侧，第一壁的外表面在对应第一镂空区的位置形成裸露区，裸露区设置有凹槽和/或凸起。
通过在裸露区设置凹槽和/或凸起，增大裸露区与粘接层的摩擦力，降低粘接层从裸露区脱落的风险，提高粘接层与裸露区的粘接可靠性，从而提高电池单体连接箱体的可靠性，提高电池装置的可靠性。
本申请实施例描述的技术方案均适用于各种使用电池单体和电池装置的用电装置，例如，手机、便携式设备、笔记本电脑、电瓶车、电动玩具、电动工具、车辆、船舶和航天器等，例如，航天器包括飞机、火箭、航天飞机和宇宙飞船等。
以下实施例为了方便说明，以本申请一实施例的一种用电装置为车辆为例进行说明。
请参照图1，图1为本申请一些实施例提供的车辆的结构示意图。车辆1000可以为燃油汽车、燃气汽车或新能源汽车，新能源汽车可以是纯电动汽车、混合动力汽车或增程式汽车等。车辆1000的内部设置有电池装置100，电池装置100可以设置在车辆1000的底部或头部或尾部。电池装置100可以用于车辆1000的供电，例如，电池装置100可以作为车辆1000的操作电源，用于车辆1000的电路系统，例如用于车辆1000的启动、导航和运行时的工作用电需求。
车辆1000还可以包括控制器1100和马达1200，控制器1100用来控制电池装置100为马达1200供电，例如，用于车辆1000的启动、导航和行驶时的工作用电需求。
在本申请一些实施例中，电池装置100不仅可以作为车辆1000的操作电源，还可以作为车辆1000的驱动电源，代替或部分地代替燃油或天然气为车辆1000提供驱动动力。
电池装置包括电池单体组件和电源管理系统，电池管理系统与电池单体组件点连接，用于管理电池单体组件的充放电。
请参照图2，图2为本申请一些实施例提供的电池装置的爆炸图。电池装置100还可以包括箱体110，电池单体1容纳于箱体110内。其中，箱体110用于为电池单体1提供容纳空间，箱体110可以采用多种结构。在一些实施例中，箱体110可以包括第一子箱体150和第二子箱体160，第一子箱体150与第二子箱体160相互盖合，第一子箱体150和第二子箱体160共同限定出用于容纳电池单体1的容纳空间。第一子箱体150可以为一端开口的空心结构，第二子箱体160可以为板状结构，第二子箱体160盖合于第一子箱体150的开口侧，以使第一子箱体150与第二子箱体160共同限定出容纳空间；第一子箱体150和第二子箱体160也可以是均为一侧开口的空心结构，第一子箱体150的开口侧盖合于第二子箱体160的开口侧。
在电池装置100中，电池单体1可以是多个，多个电池单体1之间可串联或并联或混联，混联是指多个电池单体1中既有串联又有并联。多个电池单体1之间可直接串联或并联或混联在一起，再将多个电池单体1构成的整体容纳于箱体110内；当然，电池装置100也可以是多个电池单体1先串联或并联或混联组成电池模块形式，多个电池模块再串联或并联或混联形成一个整体，并容纳于箱体110内。电池装置100还可以包括其他结构，例如，该电池装置100还可以包括汇流部件，用于实现多个电池单体1之间的电连接。
其中，电池单体1可以为二次电池或一次电池；电池单体1还可以是锂硫电池、钠离子电池或镁离子电池，但不局限于此。
请参照图3，图3为本申请一些实施例提供的电池单体的爆炸图。电池单体1包括一个或多个电极组件20和外壳10。外壳10可以包括壳体14，壳体14的多个壁部即外壳10的多个壁部围成一个腔体，此腔体可以用于容纳电极组件20。壳体14根据一个或多个电极组件20组合后的形状而定，例如，壳体14可以为中空的长方体或正方体或正多面体，且壳体14的其中一个面具有开口以便一个或多个电极组件20可以放置于壳体14内。壳体14内填充有电解质，例如电解液。
该电池单体1还可以包括两个电极端子40，两个电极端子40可以设置在端盖15上。端盖15通常是平板形状，两个电极端子40固定在端盖15的平板面上，两个电极端子40分别为正电极端子和负电极端子。在该电池单体1中，根据实际使用需求，电极组件20可设置为单个，或多个，电池单体1内设置有多个独立的电极组件20。
请参照图4，图4为本申请一些实施例提供的电池单体的结构示意图。本申请实施例提供一种电池单体1。电池单体1包括外壳10、电极组件20和绝缘件30。外壳10具有第一壁11。电极组件20容纳于外壳10内。绝缘件30包覆于外壳10的外侧，且覆盖第一壁11的外表面。其中，绝缘件30设置有第一镂空区31，第一镂空区31位于第一壁11背离电极组件20的一侧，第一壁11的外表面在对应第一镂空区31的位置形成裸露区111，裸露区111设置有凹槽1111和/或凸起1112。
在一些实施例中，外壳10的形状可以包括但不限于圆柱体、长方体或刀片状等。外壳10的材质可以包括但不限于铜、铁、铝、钢或铝合金等。
在一些实施例中，外壳10具有第一壁11，第一壁11可以为端盖15、侧壁13或者底壁141中的其中一者或者其中的至少一者。
在一些实施例中，第一壁11可以为端盖15。
在一些实施例中，电极组件20容纳于外壳10内，第一壁11的外表面为第一壁11的背离电极组件20的表面。
在一些实施例中，绝缘件30的材质可以包括但不限于橡胶、硅胶或橡胶等。绝缘件30可以通过粘接、卡接、焊接等方式覆盖于第一壁11的外表面。
在一些实施例中，外壳10的外表面包覆有绝缘件30，使得绝缘件30能够绝缘隔离电池单体1的外壳10与外部环境，以降低电池单体1在使用过程中的短接风险。
在一些实施例中，第一壁11在对应第一镂空区31的位置形成裸露区111，即绝缘件30设置有第一镂空区31，使得外壳10的第一壁11具有被第一镂空区31避让的区域，从而在第一壁11上形成未被绝缘件30覆盖的裸露区111。
在一些实施例中，设置于绝缘件30上的第一镂空区31可以是一个，也可以是多个。
在一些实施例中，绝缘件30可以设置有两个第一镂空区31，两个第一镂空区31间隔设 置，以在第一壁11上形成对应的两个裸露区111，以增加第一壁11与连接部件130之间的连接强度。
在一些实施例中，第一镂空区31可以为矩形，对应的，在第一壁11上形成的裸露区111也为矩形。
在一些实施例中，第一镂空区31也可以是三角形、五边形、圆形或椭圆形等。
在一些实施例中，裸露区111用于与连接部件130连接，裸露区111与连接部件130之间的连接方式可以为粘接。
请参照图5，图5为本申请一些实施例提供的第一壁的剖视图。在一些实施例中，裸露区111可以设置有凹槽1111。凹槽1111的加工方式可以为机加工。
请参照图6，图6为本申请另一些实施例提供的第一壁的剖视图。在一些实施例中，裸露区111可以设置有凸起1112。凸起1112的加工方式可以为挤出。
请参照图7，图7为本申请又一些实施例提供的第一壁的剖视图。在一些实施例中，裸露区111可以同时设置有凹槽1111和凸起1112。
在一些实施例中，在裸露区111设置粘接层120时，粘接层120会与凹槽1111的槽壁面粘接，从而增大粘接层120与裸露区111的接触面积。
在一些实施例中，在裸露区111设置粘接层120时，粘接层120会与凸起1112的壁面粘接，从而增大粘接层120与裸露区111的接触面积。
本申请实施例的技术方案，电池单体1通过粘接层120与箱体110连接形成电池装置100，通过在裸露区111设置凹槽1111和/或凸起1112，增大裸露区111与粘接层120的摩擦力，降低粘接层120从裸露区111脱落的风险，提高粘接层120与裸露区111的粘接可靠性，从而提高电池单体1连接箱体110的可靠性，提高电池装置100的可靠性。
请参照图8和图9，图8为本申请一些实施例提供的裸露区的示意图，图9为本申请另一些实施例提供的裸露区的示意图。在一些实施例中，凹槽1111包括第一凹槽1113，裸露区111包括多个第一凹槽1113，多个第一凹槽1113形成粘接区域11131。
在一些实施例中，第一凹槽1113的数量可以为多个，多个第一凹槽1113的开口可以为圆形、方形或者其他形状。
在一些实施例中，多个第一凹槽1113的开口的形状可以全部相同，也可以全部不相同，还可以部分相同。
在一些实施例中，第一凹槽1113可以按照不同的方式排布，形成压花的图案，压花的图案为粘接区域11131。压花的图案可以为具体物体的形状，比如花卉、动物等，也可以为不规则的形状。需要说明的是，在裸露区111上，除粘接区域11131之外的区域也会设置粘接层120。
在一些实施例中，在第一壁的厚度方向X上，第一凹槽1113的内径可以保持不变。
在一些实施例中，在第一壁的厚度方向X上，第一凹槽1113的内径可以发生变化，变化的形式可以为线性变化，也可以为不规则的变化。
本申请实施例的技术方案，设置多个第一凹槽1113用于与粘接层120连接，进一步提高粘接层120与裸露区111的粘接可靠性，从而提高电池单体1连接箱体110的可靠性，提高电池装置100的可靠性。
请参照图8，在一些实施例中，第一凹槽1113的开口呈圆形，开口的直径R1大于或等于0.4mm，且小于或等于1.2mm。
在一些实施例中，第一凹槽1113的开口的直径R1可以满足条件：0.4mm≤R1≤1.2mm。比如，R1可以为0.4mm、0.5mm、0.6mm、0.7mm、0.8mm、0.9mm、1mm、1.1mm、1.2mm中的具体某个数值或者是其中两者之间的某个数值。
在一些实施例中，多个第一凹槽1113的开口直径R1可以全部相同，也可以部分相同，还可以均不相同。
本申请实施例的技术方案，第一凹槽1113的开口直径满足上述条件，易于加工的同时，提高粘接层120与裸露区111的粘接可靠性。
请参照图8，在一些实施例中，开口的直径R1大于或等于0.4mm，且小于或等于0.8mm。
在一些实施例中，第一凹槽1113的开口的直径R1可以满足条件：0.4mm≤R1≤0.8mm。比如，R1可以为0.4mm、0.5mm、0.6mm、0.7mm、0.8mm中的具体某个数值或者是其中两者之间的某个数值。
本申请实施例的技术方案，第一凹槽1113的开口直径满足上述条件，易于加工的同时，进一步提高粘接层120与裸露区111的粘接可靠性。
请参照图8，在一些实施例中，第一凹槽1113的开口呈正方形，开口的边长A1大于或等于0.4mm，且小于或等于1.2mm。
在一些实施例中，第一凹槽1113的开口的边长A1可以满足条件：0.4mm≤A1≤1.2mm。比如，A1可以为0.4mm、0.5mm、0.6mm、0.7mm、0.8mm、0.9mm、1mm、1.1mm、1.2mm中的具体某个数值或者是其中两者之间的某个数值。
在一些实施例中，多个第一凹槽1113的开口边长A1可以全部相同，也可以部分相同，还可以均不相同。
本申请实施例的技术方案，第一凹槽1113的开口边长满足上述条件，易于加工的同时，提高粘接层120与裸露区111的粘接可靠性。
请参照图8，在一些实施例中，开口的边长A1大于或等于0.4mm，且小于或等于0.8mm。
在一些实施例中，第一凹槽1113的开口的边长A1可以满足条件：0.4mm≤A1≤0.8mm。比如，A1可以为0.4mm、0.5mm、0.6mm、0.7mm、0.8mm中的具体某个数值或者是其中两者之间的某个数值。
本申请实施例的技术方案，第一凹槽1113的开口边长满足上述条件，易于加工的同时，进一步提高粘接层120与裸露区111的粘接可靠性。
请参照图5，在一些实施例中，在第一壁的厚度方向X上，第一凹槽1113的深度D1大于或等于0.08mm，且小于或等于0.5mm。
在一些实施例中，第一壁的厚度方向可以用图中字母X所示的方向表示。
在一些实施例中，端盖15与底壁141可以沿第一壁的厚度方向X相对设置。
在一些实施例中，第一凹槽1113的深度D1可以满足条件：0.08mm≤D1≤0.5mm。比如，D1可以为0.08mm、0.1mm、0.2mm、0.3mm、0.4mm、0.5mm中的具体某个数值或者是其中两者之间的某个数值。
在一些实施例中，多个第一凹槽1113的深度D1可以全部相同，也可以部分相同，还可以均不相同。
需要说明的是，在第一壁的厚度方向X上，第一凹槽1113的深度D1小于第一壁11的厚度。
本申请实施例的技术方案，第一凹槽1113的深度满足上述条件，降低对第一壁11结构强度的影响，同时提高粘接层120与裸露区111的粘接可靠性。
请参照图5，在一些实施例中，在第一壁的厚度方向X上，第一凹槽1113的深度D1大于或等于0.08mm，且小于或等于0.2mm。
在一些实施例中，第一凹槽1113的深度D1可以满足条件：0.08mm≤D1≤0.2mm。比如，D1可以为0.08mm、0.1mm、0.12mm、0.14mm、0.16mm、0.18mm、0.2mm中的具体某个数值或者是其中两者之间的某个数值。
本申请实施例的技术方案，第一凹槽1113的深度满足上述条件，进一步降低对第一壁11结构强度的影响，同时提高粘接层120与裸露区111的粘接可靠性。
请参照图10，图10为本申请一些实施例提供的第二凹槽的示意图。在一些实施例中，凹槽1111包括第二凹槽1114，第二凹槽1114包括第一槽段1115和第二槽段1116，第一槽段1115和第二槽段1116沿第一壁的厚度方向X排布，第一槽段1115相较于第二槽段1116更靠近第一壁11的外表面。其中，第一槽段1115的直径小于第二槽段1116的直径。
在一些实施例中，第二凹槽1114的加工方式可以为注塑形成。
在一些实施例中，在第一壁的厚度方向X上，第一槽段1115和第二槽段1116依次排布，第一槽段1115连接于第二槽段1116背离电极组件20的一端。
在一些实施例中，第二凹槽1114可以只包括第一槽段1115和第二槽段1116，第一槽段1115背离第二槽段1116的一端延伸至第一壁11的外表面。
在一些实施例中，当粘接层120设置于裸露区111时，粘接层120进入第一槽段1115和第二槽段1116，由于第一槽段1115的直径小于第二槽段1116的直径，使得粘接层120会与第二槽段1116背离电极组件20的内壁接触或者抵接，从而使得粘接层120不易从第二槽段1116中脱落。
在一些实施例中，在第一壁的厚度方向X上，第一槽段1115的直径可以保持不变。
在一些实施例中，在第一壁的厚度方向X上，第一槽段1115的直径可以发生变化。
在一些实施例中，在第一壁的厚度方向X上，第二槽段1116的直径可以保持不变。
在一些实施例中，在第一壁的厚度方向X上，第一槽段1115的直径可以发生变形。
需要说明的是，第一槽段1115的与第二槽段1116的连接处的直径小于第二槽段1116的与第一槽段1115连接处的直径。
本申请实施例的技术方案，粘接层120从第一槽段1115进入第二槽段1116中，第二凹槽1114的第一槽段1115的直径小于第二槽段1116的直径，降低粘接层120由第二槽段1116中脱落的风险，提高粘接层120与裸露区111的粘接可靠性。
请参照图11，图11为本申请另一些实施例提供的第二凹槽的示意图。在一些实施例中，第二凹槽1114包括第三槽段1117，第三槽段1117、第一槽段1115和第二槽段1116沿第一壁的厚度方向X依次排布，第三槽段1117的一端延伸至第一壁11的外表面，另一端与第一槽段1115连通。其中，第一槽段1115的直径小于第三槽段1117的直径。
在一些实施例中，第二凹槽1114还可以包括第三槽段1117。在第一壁的厚度方向X上，第三槽段1117、第一槽段1115和第二槽段1116依次排布，第一槽段1115连接于第二槽段1116背离电极组件20的一端，第三槽段1117连接于第一槽段1115背离电极组件20的一端。第三槽段1117背离第一槽段1115的一端延伸至第一壁11的外表面。
在一些实施例中，第二凹槽1114的数量可以为多个，其中部分第二凹槽1114可以包括第一槽段1115、第二槽段1116和第三槽段1117，另一部分第二凹槽1114可以只包括第一槽段1115和第二槽段1116。
在一些实施例中，第二凹槽1114的数量可以为多个，所有第二凹槽1114均可以包括第一槽段1115、第二槽段1116和第三槽段1117。
在一些实施例中，当粘接层120设置于裸露区111时，粘接层120进入第三槽段1117、第一槽段1115和第二槽段1116，由于第三槽段1117的直径大于第一槽段1115的直径，使得粘接层120与连接部件130的接触面积较大。
在一些实施例中，在第一壁的厚度方向X上，第三槽段1117的直径可以保持不变。
在一些实施例中，在第一壁的厚度方向X上，第三槽段1117的直径可以发生变化。
在一些实施例中，在第一壁的厚度方向X上，第三槽段1117的直径可以保持不变。
在一些实施例中，在第一壁的厚度方向X上，第三槽段1117的直径可以发生变化。
需要说明的是，第三槽段1117背离电极组件20的一端的直径可以大于第一槽段1115背离电极组件20的一端的直径。
本申请实施例的技术方案，粘接层120依次经过第三槽段1117、第一槽段1115进入第二槽段1116中，第二凹槽1114的第一槽段1115的直径小于第二槽段1116的直径，第二凹槽1114的第一槽段1115的直径小于第三槽段1117的直径，降低粘接层120由第二槽段1116中脱落的风险，通过第三槽段1117的粘接层120进行粘接，增大粘接面积，提高粘接层120与裸露区111的粘接可靠性。
请参照图10，在一些实施例中，第一槽段1115的直径R2大于或等于1mm，且小于或等于3mm。
在一些实施例中，第一槽段1115的直径R2可以满足条件：1mm≤R2≤3mm。比如，R2 可以为1mm、1.5mm、2mm、2.5mm、3mm中的具体某个数值或者是其中两者之间的某个数值。
在一些实施例中，第二凹槽1114的数量可以为多个，多个第一槽段1115的直径R2可以全部相同，也可以部分相同，还可以均不相同。
本申请实施例的技术方案，第一槽段1115的直径满足上述条件，易于加工的同时，降低粘接层120由第二槽段1116中脱落的风险，提高粘接层120与裸露区111的粘接可靠性。
请参照图10，在一些实施例中，第二槽段1116的直径R3大于或等于1.5mm，且小于或等于4mm。
在一些实施例中，第二槽段1116的直径R3可以满足条件：1.5mm≤R3≤4mm。比如，R3可以为1.5mm、2mm、2.5mm、3mm、3.5mm、4mm中的具体某个数值或者是其中两者之间的某个数值。
在一些实施例中，第二凹槽1114的数量可以为多个，多个第二槽段1116的直径R3可以全部相同，也可以部分相同，还可以均不相同。
本申请实施例的技术方案，第二槽段1116的直径满足上述条件，易于加工的同时，降低粘接层120由第二槽段1116中脱落的风险，提高粘接层120与裸露区111的粘接可靠性。
请参照图11，在一些实施例中，第三槽段1117的直径R4大于或等于2mm，且小于或等于4mm。
在一些实施例中，第三槽段1117的直径R4可以满足条件：2mm≤R4≤4mm。比如，R4可以为2mm、2.5mm、3mm、3.5mm、4mm中的具体某个数值或者是其中两者之间的某个数值。
在一些实施例中，第二凹槽1114的数量可以为多个，多个第三槽段1117的直径R4可以全部相同，也可以部分相同，还可以均不相同。
本申请实施例的技术方案，第三槽段1117的直径满足上述条件，增大粘接面积的同时，降低粘接层120由裸露区111脱落的风险，提高粘接层120与裸露区111的粘接可靠性。
请参照图11，在一些实施例中，在第一壁的厚度方向X上，第二凹槽1114的深度D2大于或等于0.4mm，且小于或等于1.5mm。
在一些实施例中，第二凹槽1114的深度D2可以满足条件：0.4mm≤D2≤1.5mm。比如，D2可以为0.4mm、0.6mm、0.8mm、1mm、1.2mm、1.4mm、1.5mm中的具体某个数值或者是其中两者之间的某个数值。
在一些实施例中，多个第二凹槽1114的深度D2可以全部相同，也可以部分相同，还可以均不相同。
需要说明的是，在第一壁的厚度方向X上，第二凹槽1114的深度D2小于第一壁11的厚度。
在一些实施例中，第二凹槽1114的数量可以为多个，多个第二凹槽1114的深度D2可以全部相同，也可以部分相同，还可以均不相同。
本申请实施例的技术方案，第二凹槽1114的深度满足上述条件，降低粘接层120裸露区111脱落的风险，同时降低影响第一壁11结构强度的风险，提高粘接层120与裸露区111的粘接可靠性。
请参照图10，在一些实施例中，在第一壁的厚度方向X上，第一槽段1115的深度D3大于或等于0.2mm，且小于或等于0.75mm。
在一些实施例中，第一槽段1115的深度D3可以满足条件：0.2mm≤D3≤0.75mm。比如，D3可以为0.2mm、0.3mm、0.4mm、0.5mm、0.6mm、0.7mm、0.75mm中的具体某个数值或者是其中两者之间的某个数值。
在一些实施例中，第二凹槽1114的数量可以为多个，多个第二凹槽1114的第一槽段1115的深度D3可以全部相同，也可以部分相同，还可以均不相同。
本申请实施例的技术方案，第一槽段1115的深度满足上述条件，易于加工的同时，降低粘接层120由第二槽段1116中脱落的风险，提高粘接层120与裸露区111的粘接可靠性。
请参照图10，在一些实施例中，在第一壁的厚度方向X上，第二槽段1116的深度D4大 于或等于0.1mm，且小于或等于0.4mm。
在一些实施例中，第二槽段1116的深度D4可以满足条件：0.1mm≤D4≤0.4mm。比如，D4可以为0.1mm、0.15mm、0.2mm、0.25mm、0.3mm、0.35mm、0.4mm中的具体某个数值或者是其中两者之间的某个数值。
在一些实施例中，第二凹槽1114的数量可以为多个，多个第二凹槽1114的第二槽段1116的深度D4可以全部相同，也可以部分相同，还可以均不相同。
本申请实施例的技术方案，第二槽段1116的深度满足上述条件，易于加工的同时，降低粘接层120由第二槽段1116中脱落的风险，提高粘接层120与裸露区111的粘接可靠性。
请参照图11，在一些实施例中，在第一壁的厚度方向X上，第三槽段1117的深度D5大于或等于0.1mm，且小于或等于0.4mm。
在一些实施例中，第三槽段1117的深度D5可以满足条件：0.1mm≤D3≤0.4mm。比如，D5可以为0.1mm、0.15mm、0.2mm、0.25mm、0.3mm、0.35mm、0.4mm中的具体某个数值或者是其中两者之间的某个数值。
在一些实施例中，第二凹槽1114的数量可以为多个，多个第二凹槽1114的第三槽段1117的深度D5可以全部相同，也可以部分相同，还可以均不相同。
本申请实施例的技术方案，第三槽段1117的深度满足上述条件，易于加工的同时，降低粘接层120由裸露区111脱落的风险，提高粘接层120与裸露区111的粘接可靠性。
请参照图3和图4，并参照图12，图12为本申请另一些实施例提供的电池单体的结构示意图。在一些实施例中，外壳10还包括第二壁12和侧壁13，沿第一壁的厚度方向X，第二壁12与第一壁11相对设置，侧壁13围设于第一壁11和第二壁12的周围。绝缘件30包括分体设置的第一绝缘件32和第二绝缘件33，第一绝缘件32覆盖第一壁11的部分外表面，第二绝缘件33覆盖第二壁12的至少部分外表面和侧壁13的至少部分外表面。
在一些实施例中，沿第一壁的厚度方向X，第二壁12与第一壁11相对设置，侧壁13围设于第一壁11和第二壁12的周围，即第一壁11和第二壁12沿第一壁的厚度方向X间隔设置并分别设置于侧壁13的两端，侧壁13沿第一壁11的周向围设于第一壁11的周围并沿第二壁12的周向围设于第二壁12的周围。
需要说明的是，外壳10的结构可以是多种，可以是第一壁11、第二壁12和侧壁13均为分体式结构，也可以是第二壁12和侧壁13为一体成型结构，第一壁11连接于侧壁13远离第一壁11的一端，还可以是第一壁11和侧壁13为一体成型结构，第二壁12连接于侧壁13远离第二壁12的一端。
在一些实施例中，第一绝缘件32覆盖第一壁11背离电极组件20的外表面，即第一绝缘件32设置于第一壁11上，且位于第一壁11背离电池单体1的内部的一侧。
在一些实施例中，第二绝缘件33覆盖第二壁12背离电极组件20的外表面和侧壁13背离电极组件20的外表面，即第二绝缘件33设置于第二壁12和侧壁13围合形成的壳体14上，且位于壳体14背离电池单体1的内部的一侧。
在一些实施例中，第一绝缘件32可以覆盖第一壁11的全部表面，第一镂空区31可以设置于第一绝缘件32。
在一些实施例中，第一绝缘件32可以覆盖第一壁11的部分表面，第一镂空区31可以设置于第一绝缘件32。
在一些实施例中，第一绝缘件32可以覆盖第一壁11的部分表面，第二绝缘件33也可以覆盖第一壁11的部分表面，第一绝缘件32和第二绝缘件33不接触，第二绝缘件33的边缘和第一绝缘件32的边缘共同限定出第一镂空区31。
在一些实施例中，第一绝缘件32可以覆盖第一壁11的部分表面，第二绝缘件33也可以覆盖第一壁11的部分表面，第一绝缘件32和第二绝缘件33不接触，第一镂空区31可以设置于第一绝缘件32。
本申请实施例的技术方案，通过将绝缘体设置为分体设置的第一绝缘件32和第二绝缘件33，第一绝缘件32为覆盖第一壁11的结构，第二绝缘件33为覆盖侧壁13和第二壁12的结构， 使得绝缘件30的第一绝缘件32和第二绝缘件33分别与外壳10的第一壁11以及外壳10的第二壁12和侧壁13对应设置，从而有利于降低绝缘件30与外壳10之间的装配难度。
请参照图3、图4和图12，在一些实施例中，第二绝缘件33具有翻边部331，翻边部331沿第一壁11的周向设置并位于第一壁11的外表面，翻边部331与第一绝缘件32的边缘共同围合形成第一镂空区31。
在一些实施例中，第二绝缘件33具有翻边部331，翻边部331沿第一壁11的周向设置并位于第一壁11背离电极组件20的一侧，即设置于第二壁12和侧壁13围合形成的壳体14的外侧的第二绝缘件33的部分翻折至第一壁11上，以使第二绝缘件33形成有位于第一壁11的外表面上的翻边部331，且翻边部331为沿第一壁11的周向延伸的环形结构。
在一些实施例中，翻边部331与第一绝缘件32的边缘共同围合形成第一镂空区31，即第一镂空区31为由环形结构的翻边部331和设置于第一壁11的外表面上的第一绝缘件32的边缘共同围合而成，也就是说，翻边部331的内边缘与第一绝缘件32的外边缘共同界定第一镂空区31。
本申请实施例的技术方案，第二绝缘件33具有沿第一壁11的周向设置于第一壁11且位于第一壁11的边缘的翻边部331，使得设置于第一壁11上的第一绝缘件32的边缘与翻边部331的部分共同围合形成第一镂空区31，以在第一壁11上形成裸露区111，采用这种结构的电池单体1一方面无需将第一绝缘件32设置为具有通孔的结构，有利于提高第一绝缘件32的整体结构强度，另一方面有利于控制第一镂空区31的大小和尺寸。
请参照图3、图4和图12，在一些实施例中，电池单体1还包括电极端子40，电极端子40设置于第一壁11。绝缘件30设置有第二镂空区34，第二镂空区34与第一镂空区31间隔设置，电极端子40穿设于第二镂空区34。
在一些实施例中，第二镂空区34与第一镂空区31间隔设置，即设置于第一壁11上的电极端子40与第一镂空区31间隔设置，且绝缘件30的部分位于电极端子40与第一镂空区31之间。
本申请实施例的技术方案，电极端子40设置于第一壁11上，且绝缘件30对应电极端子40的位置设置有供电极端子40穿过的第二镂空区34，通过将第二镂空区34与第一镂空区31间隔设置，一方面使得第一壁11对应第一镂空区31形成的裸露区111能够与电极端子40间隔设置，以减少裸露区111与外部部件相连时与电极端子40之间的干涉影响。
请参照图3，在一些实施例中，外壳10包括壳体14和端盖15，壳体14包括底壁141和多个侧壁13，底壁141和端盖15沿第一壁的厚度方向X相对设置，多个侧壁13围设于底壁141的周围，多个侧壁13的一端连接于底壁141，另一端形成开口，端盖15封闭开口，端盖15为第一壁11。
在一些实施例中，第二壁12和侧壁13围合形成在第一壁的厚度方向X上的一端开口的空心结构，且第一壁11盖合于开口处，以形成用于容纳电极组件20的外壳10。
在一些实施例中，第二壁12和侧壁13也可以是分体式结构，即侧壁13为在第一壁的厚度方向X上两端开口的中空结构，第一壁11和第二壁12分别盖合于侧壁13的两个开口处。
在一些实施例中，第二壁12与侧壁13为一体成型结构，即外壳10的第二壁12和侧壁13为通过一体成型工艺制成，比如，冲压或铸造等。
本申请实施例的技术方案，端盖15为第一壁11，增大端盖15与粘接层120的摩擦力，降低粘接层120从端盖15脱落的风险，提高粘接层120与端盖15的粘接可靠性，从而提高端盖15连接箱体110的可靠性，提高电池装置100的可靠性。
请参照图13至图15，图13为本申请一些实施例提供的电池装置的内部结构示意图，图14为本申请一些实施例提供的裸露区与连接部件连接的示意图，图15为本申请另一些实施例提供的裸露区与连接部件连接的示意图。其中，为了便于展示电池装置的内部结构，图13中隐藏了第一子箱体。本申请实施例还提供一种电池装置100。电池装置100包括箱体110、粘接层120、连接部件130和上述任一实施例的电池单体1。电池单体1设置于箱体110内。粘接层120设置于裸露区111。连接部件130，设置于箱体110内，在第一壁的厚度方向X上，连接部件130的至少一侧连接粘接层120，以连接多个电池单体1。
在一些实施例中，电池单体1放置于箱体110内，即电池单体1的第二壁12被配置为支撑电极组件20，使得第二壁12能够在第一壁的厚度方向X上对电极组件20起到支撑作用。也就 是说，外壳10的第一壁11面向箱体110的顶部设置，外壳10的第二壁12面向箱体110的底部设置，或在实际使用过程中，外壳10的第二壁12为朝向地面或朝下设置，使得第一壁的厚度方向X为上下方向。
其中，连接部件130在第一壁的厚度方向X上设置于第一壁11与箱体110的顶部之间，且连接部件130与第一壁11形成的裸露区111粘接。
在一些实施例中，连接部件130可以为压条。
在一些实施例中，连接部件130为绝缘材质，连接部件130的材质可以为橡胶、塑胶或硅胶等，采用这种结构的连接部件130能够实现连接部件130与电池单体1之间的绝缘连接，以减少漏电或短路等风险。
需要说明的是，在其他实施例中，电池单体1也可以是倒置放置于箱体110内，即电池单体1的第一壁11被配置为支撑电极组件20，使得第一壁11能够在第一壁的厚度方向X上对电极组件20起到支撑作用，以使连接部件130在第一壁的厚度方向X上设置于第一壁11与箱体110的底部之间，且连接部件130与第一壁11形成的裸露区111粘接。
在一些实施例中，粘接层120可以为胶水层。
在一些实施例中，在第一壁的厚度方向X上，粘接层120的一个表面粘接于裸露区111，另一个表面粘接于连接部件130，使得连接部件130面向电池单体1的一侧连接多个电池单体1。
本申请实施例的技术方案，粘接层120设置于裸露区111，从而连接电池单体1和连接部件130，提高电池单体1连接箱体110的可靠性，提高电池装置100的可靠性。
请参照图14，在一些实施例中，裸露区111设置有凹槽1111，粘接层120的至少部分位于凹槽1111中。
在一些实施例中，裸露区111的凹槽1111可以全部充满粘接层120。
在一些实施例中，裸露区111的凹槽1111中的部分空间可以被粘接层120充满。
本申请实施例的技术方案，粘接层120设置于凹槽1111内，降低粘接层120从裸露区111脱落的风险，提高电池单体1连接箱体110的可靠性，提高电池装置100的可靠性。
请参照图15，在一些实施例中，裸露区111设置有凸起1112，凸起1112完全嵌入粘接层120中。
在一些实施例中，裸露区111的凸起1112的全部外表面均与粘接层120接触。
本申请实施例的技术方案，凸起1112嵌入粘接层120中，降低粘接层120从裸露区111脱落的风险，提高电池单体1连接箱体110的可靠性，提高电池装置100的可靠性。
请参照图16，图16为本申请又一些实施例提供的裸露区与连接部件连接的示意图。在一些实施例中，电池装置100还包括连接层140，在第一壁的厚度方向X上，连接层140连接裸露区111和粘接层120，连接层140的材质为偶联剂。
在一些实施例中，外壳10的材质可以为金属。
在一些实施例中，外壳10的材质可以为铝金属。
在一些实施例中，粘接层120的材质可以为合成树脂。
在一些实施例中，偶联剂具有亲和胶水以及亲和金属的属性。偶联剂的分子中同时具有能和无机质材料(如玻璃、硅砂、金属等)化学结合的反应基团及与有机质材料(合成树脂等)化学结合的反应基团。
在一些实施例中，在第一壁的厚度方向X上，连接层140的一个表面可以和裸露区111连接，另一个表面可以和粘接层120连接。
在一些实施例中，连接层140可以和粘接层120没有明显的分层现象，也即连接层140和粘接层120均可以和裸露区111接触，也可以均可以和连接部件130接触。
本申请实施例的技术方案，偶联剂具有亲和粘接层120和亲和金属的性能，电池单体1的外壳10为金属，连接层140为偶联剂，通过连接层140连接粘接层120和裸露区111，降低粘接层120从裸露区111脱落的风险，提高电池单体1连接箱体110的可靠性，提高电池装置100的可靠性。
本申请实施例还提供一种用电装置，包括上述任一实施例电池或上述任一实施例的电池装置100，电池单体1或电池装置100用于为用电装置提供电能。
请参照图3、图4、图5、图9和图11，在一些实施例中，电池单体1包括电极组件20、外壳10和绝缘件30。电极组件20设置于外壳10内。外壳10包括壳体14和端盖15，壳体14具有开口，端盖15盖合壳体14的开口。绝缘件30包覆于外壳10的外侧，且覆盖端盖15的外表面。其中，绝缘件30设置有第一镂空区31，第一镂空区31位于端盖15背离电极组件20的一侧，端盖15的外表面在对应第一镂空区31的位置形成裸露区111，裸露区111设置有凹槽1111。
在一些实施例中，凹槽1111包括第一凹槽1113和第二凹槽1114。第一凹槽1113的数量为多个，第一凹槽1113可以按照不同的方式排布，形成压花的图案，压花的图案为粘接区域11131。
第二凹槽1114的数量为多个。第二凹槽1114包括第一槽段1115、第二槽段1116和第三槽段1117，第三槽段1117、第一槽段1115和第二槽段1116沿第一壁的厚度方向X依次连接。第三槽段1117的一端延伸至端盖15的外表面。其中，第一槽段1115的直径小于第三槽段1117的直径，第一槽段1115的直径小于第二槽段1116的直径。
通过在裸露区111设置第一凹槽1113和第二凹槽1114，增大裸露区111与粘接层120的摩擦力，降低粘接层120从裸露区111脱落的风险，提高粘接层120与裸露区111的粘接可靠性，从而提高电池单体1连接箱体110的可靠性，提高电池装置100的可靠性。
虽然已经参考优选实施例对本申请进行了描述，但在不脱离本申请的范围的情况下，可以对其进行各种改进并且可以用等效物替换其中的部件。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本申请并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (26)

  1. 一种电池单体，其特征在于，包括：
    外壳，具有第一壁；
    电极组件，容纳于所述外壳内；
    绝缘件，包覆于所述外壳的外侧，且覆盖所述第一壁的外表面；
    其中，所述绝缘件设置有第一镂空区，所述第一镂空区位于所述第一壁背离所述电极组件的一侧，所述第一壁的外表面在对应所述第一镂空区的位置形成裸露区，所述裸露区设置有凹槽和/或凸起。
  2. 根据权利要求1所述的电池单体，其特征在于，所述凹槽包括第一凹槽，所述裸露区包括多个所述第一凹槽，多个所述第一凹槽形成粘接区域。
  3. 根据权利要求1至2中任一项所述的电池单体，其特征在于，所述第一凹槽的开口呈圆形，所述第一凹槽的开口的直径R1大于或等于0.4mm，且小于或等于1.2mm。
  4. 根据权利要求1至3中任一项所述的电池单体，其特征在于，所述第一凹槽的开口的直径R1大于或等于0.4mm，且小于或等于0.8mm。
  5. 根据权利要求1至2中任一项所述的电池单体，其特征在于，所述第一凹槽的开口呈正方形，所述第一凹槽的开口的边长A1大于或等于0.4mm，且小于或等于1.2mm。
  6. 根据权利要求5所述的电池单体，其特征在于，所述第一凹槽的开口的边长A1大于或等于0.4mm，且小于或等于0.8mm。
  7. 根据权利要求1至6中任一项所述的电池单体，其特征在于，在所述第一壁的厚度方向上，所述第一凹槽的深度D1大于或等于0.08mm，且小于或等于0.5mm。
  8. 根据权利要求1至7中任一项所述的电池单体，其特征在于，在所述第一壁的厚度方向上，所述第一凹槽的深度D1大于或等于0.08mm，且小于或等于0.2mm。
  9. 根据权利要求1至8中任一项所述的电池单体，其特征在于，所述凹槽包括第二凹槽，所述第二凹槽包括第一槽段和第二槽段，所述第一槽段和所述第二槽段沿所述第一壁的厚度方向排布，所述第一槽段相较于所述第二槽段更靠近所述第一壁的外表面；
    其中，所述第一槽段的直径小于所述第二槽段的直径。
  10. 根据权利要求9所述的电池单体，其特征在于，所述第二凹槽包括第三槽段，所述第三槽段、所述第一槽段和所述第二槽段沿所述第一壁的厚度方向依次排布，所述第三槽段的一端延伸至所述第一壁的外表面，另一端与所述第一槽段连通；
    其中，所述第一槽段的直径小于所述第三槽段的直径。
  11. 根据权利要求9至10中任一项所述的电池单体，其特征在于，所述第一槽段的直径R2大于或等于1mm，且小于或等于3mm。
  12. 根据权利要求9至11中任一项所述的电池单体，其特征在于，所述第二槽段的直径R3大于或等于1.5mm，且小于或等于4mm。
  13. 根据权利要求10所述的电池单体，其特征在于，所述第三槽段的直径R4大于或等于2mm，且小于或等于4mm。
  14. 根据权利要求9至13中任一项所述的电池单体，其特征在于，在所述第一壁的厚度方向上，所述第二凹槽的深度D2大于或等于0.4mm，且小于或等于1.5mm。
  15. 根据权利要求9至14中任一项所述的电池单体，其特征在于，在所述第一壁的厚度方向上，所述第一槽段的深度D3大于或等于0.2mm，且小于或等于0.75mm。
  16. 根据权利要求9至15中任一项所述的电池单体，其特征在于，在所述第一壁的厚度方向上，所述第二槽段的深度D4大于或等于0.1mm，且小于或等于0.4mm。
  17. 根据权利要求10所述的电池单体，其特征在于，在所述第一壁的厚度方向上，所述第三槽段的深度D5大于或等于0.1mm，且小于或等于0.4mm。
  18. 根据权利要求1至17中任一项所述的电池单体，其特征在于，所述外壳还包括第二壁和侧壁，沿所述第一壁的厚度方向，所述第二壁与所述第一壁相对设置，所述侧壁围设于所述第一壁和所述第二壁的周围；
    所述绝缘件包括分体设置的第一绝缘件和第二绝缘件，所述第一绝缘件覆盖所述第一壁的部分外表面，所述第二绝缘件覆盖所述第二壁的至少部分外表面和所述侧壁的至少部分外表面。
  19. 根据权利要求18所述的电池单体，其特征在于，所述第二绝缘件具有翻边部，所述翻边部沿所述第一壁的周向设置并位于所述第一壁的外表面，所述翻边部与所述第一绝缘件的边缘共同围合形成所述第一镂空区。
  20. 根据权利要求1至19中任一项所述的电池单体，其特征在于，所述电池单体还包括电极端子，所述电极端子设置于所述第一壁；
    所述绝缘件设置有第二镂空区，所述第二镂空区与所述第一镂空区间隔设置，所述电极端子穿设于所述第二镂空区。
  21. 根据权利要求1至20中任一项所述的电池单体，其特征在于，所述外壳包括壳体和端盖，所述壳体包括底壁和多个侧壁，所述底壁和所述端盖沿所述第一壁的厚度方向相对设置，多个侧壁围设于所述底壁的周围，所述多个侧壁的一端连接于所述底壁，另一端形成开口，所述端盖封闭所述开口，所述端盖为所述第一壁。
  22. 一种电池装置，其特征在于，包括：
    箱体；
    多个如权利要求1至21中任一项所述的电池单体，设置于所述箱体内；
    粘接层，设置于所述裸露区；
    连接部件，设置于所述箱体内，在所述第一壁的厚度方向上，所述连接部件的至少一侧连接所述粘接层，以连接多个所述电池单体。
  23. 根据权利要求22所述的电池装置，其特征在于，所述裸露区设置有凹槽，所述粘接层的至少部分位于所述凹槽中。
  24. 根据权利要求22至23中任一项所述的电池装置，其特征在于，所述裸露区设置有凸起，所述凸起完全嵌入所述粘接层中。
  25. 根据权利要求22至24中任一项所述的电池装置，其特征在于，所述电池装置还包括连接层，在所述第一壁的厚度方向上，所述连接层连接所述裸露区和所述粘接层，所述连接层的材质为偶联剂。
  26. 一种用电装置，其特征在于，包括如权利要求1至21中任一项所述的电池单体或如权利要求22至25中任一项所述的电池装置，所述电池单体或所述电池装置用于为所述用电装置提供电能。
PCT/CN2024/108914 2024-07-31 2024-07-31 电池单体、电池装置及用电装置 Pending WO2026025366A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202480063042.1A CN122003757A (zh) 2024-07-31 2024-07-31 电池单体、电池装置及用电装置
PCT/CN2024/108914 WO2026025366A1 (zh) 2024-07-31 2024-07-31 电池单体、电池装置及用电装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2024/108914 WO2026025366A1 (zh) 2024-07-31 2024-07-31 电池单体、电池装置及用电装置

Publications (1)

Publication Number Publication Date
WO2026025366A1 true WO2026025366A1 (zh) 2026-02-05

Family

ID=98606024

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2024/108914 Pending WO2026025366A1 (zh) 2024-07-31 2024-07-31 电池单体、电池装置及用电装置

Country Status (2)

Country Link
CN (1) CN122003757A (zh)
WO (1) WO2026025366A1 (zh)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116365147A (zh) * 2023-05-31 2023-06-30 深圳海辰储能控制技术有限公司 储能电池、储能装置和用电设备
CN219350293U (zh) * 2023-01-31 2023-07-14 宁德时代新能源科技股份有限公司 电池单体、电池及用电装置
CN118099643A (zh) * 2024-02-05 2024-05-28 欣旺达动力科技股份有限公司 一种电池包及车辆
DE102022213900A1 (de) * 2022-12-19 2024-06-20 Volkswagen Aktiengesellschaft Batteriepouchzelle
CN221201368U (zh) * 2024-04-03 2024-06-21 宁德时代新能源科技股份有限公司 电池、用电装置及储能装置
CN221226375U (zh) * 2024-03-26 2024-06-25 宁德时代新能源科技股份有限公司 电池及用电设备

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022213900A1 (de) * 2022-12-19 2024-06-20 Volkswagen Aktiengesellschaft Batteriepouchzelle
CN219350293U (zh) * 2023-01-31 2023-07-14 宁德时代新能源科技股份有限公司 电池单体、电池及用电装置
CN116365147A (zh) * 2023-05-31 2023-06-30 深圳海辰储能控制技术有限公司 储能电池、储能装置和用电设备
CN118099643A (zh) * 2024-02-05 2024-05-28 欣旺达动力科技股份有限公司 一种电池包及车辆
CN221226375U (zh) * 2024-03-26 2024-06-25 宁德时代新能源科技股份有限公司 电池及用电设备
CN221201368U (zh) * 2024-04-03 2024-06-21 宁德时代新能源科技股份有限公司 电池、用电装置及储能装置

Also Published As

Publication number Publication date
CN122003757A (zh) 2026-05-08

Similar Documents

Publication Publication Date Title
CN214203812U (zh) 电池单体、电池以及用电装置
CN219873752U (zh) 电池单体、电池及用电装置
CN220569860U (zh) 电池单体、电池及用电设备
US20250349992A1 (en) Battery cell, battery, and electric apparatus
CN219350293U (zh) 电池单体、电池及用电装置
CN220172186U (zh) 电极组件、电池单体、电池及用电设备
US20240396151A1 (en) Battery box upper cover, battery box, battery, and electric device
CN222953332U (zh) 电池装置及用电装置
CN222775433U (zh) 电池单体、电池及用电设备
CN223123926U (zh) 电池单体、电池装置及用电装置
WO2024148507A1 (zh) 电池单体、电池及用电装置
CN119404370A (zh) 电池单体、电池及用电装置
CN223181233U (zh) 电池单体、电池装置及用电装置
CN223123997U (zh) 电池单体、电池装置及用电装置
CN122003757A (zh) 电池单体、电池装置及用电装置
CN222394851U (zh) 电池单体、电池、用电装置及储能装置
CN222320466U (zh) 电池单体、电池装置及用电装置
CN223927544U (zh) 电池装置及用电装置
CN221486570U (zh) 电池单体、电池及用电设备
CN223052344U (zh) 电池单体、电池、用电装置及储能装置
CN222546623U (zh) 绝缘膜、电池单体、电池及用电设备
CN222705783U (zh) 电池单体、电池以及用电装置
CN223815750U (zh) 电池单体、电池装置、储能装置、储能系统和充电网络
CN221766875U (zh) 电池单体、电池以及用电装置
CN220527048U (zh) 端盖、电池单体、电池和用电设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24949107

Country of ref document: EP

Kind code of ref document: A1