WO2023015558A1 - 电池单体、电池、用电设备及电池单体的制造方法和设备 - Google Patents

电池单体、电池、用电设备及电池单体的制造方法和设备 Download PDF

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Publication number
WO2023015558A1
WO2023015558A1 PCT/CN2021/112495 CN2021112495W WO2023015558A1 WO 2023015558 A1 WO2023015558 A1 WO 2023015558A1 CN 2021112495 W CN2021112495 W CN 2021112495W WO 2023015558 A1 WO2023015558 A1 WO 2023015558A1
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WO
WIPO (PCT)
Prior art keywords
battery cell
heat
end cover
heat conducting
electrode assembly
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.)
Ceased
Application number
PCT/CN2021/112495
Other languages
English (en)
French (fr)
Inventor
周文林
徐良帆
陈文伟
李星
李全坤
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 PCT/CN2021/112495 priority Critical patent/WO2023015558A1/zh
Priority to KR1020237004364A priority patent/KR102871889B1/ko
Priority to EP21951138.3A priority patent/EP4178007A4/en
Priority to CN202180092666.2A priority patent/CN116848702A/zh
Priority to JP2023508046A priority patent/JP7567030B2/ja
Publication of WO2023015558A1 publication Critical patent/WO2023015558A1/zh
Priority to US18/494,733 priority patent/US20240055693A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0404—Machines for assembling batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/049—Processes for forming or storing electrodes in the battery container
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/654—Means for temperature control structurally associated with the cells located inside the innermost case of the cells, e.g. mandrels, electrodes or electrolytes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • 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
    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • 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
    • H01M50/147—Lids or covers
    • 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
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/471—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof
    • H01M50/474—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof characterised by their position inside the 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/471—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof
    • H01M50/477—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof characterised by their shape
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the field of battery technology, in particular, to a battery cell, a battery, an electrical device, and a method and device for manufacturing the battery cell.
  • Batteries are widely used in electronic equipment, such as mobile phones, laptop computers, battery cars, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes and electric tools, etc.
  • a battery cell typically generates electricity by moving metal ions between the positive and negative tabs.
  • the internal heat of the battery cell will be generated during the charging and discharging process. If the heat inside the battery cell cannot be dissipated in time, the service life of the battery cell will be directly affected.
  • Embodiments of the present application provide a battery cell, a battery, an electrical device, and a manufacturing method and device for the battery cell, which can effectively improve the service life of the battery cell.
  • an embodiment of the present application provides a battery cell, comprising: a casing having an opening; an electrode assembly for being accommodated in the casing; an end cap for covering the opening; an insulating member, Located on the side of the end cover facing the electrode assembly, the insulating member is used to isolate the end cover from the electrode assembly; a heat conducting member is embedded in the insulating member, and the heat conducting member is configured to Fits the end cap.
  • the insulator is embedded with a heat conduction element, and the heat conduction element is bonded to the end cover.
  • the heat generated by the electrode assembly can be efficiently transferred to the end cover through the heat conduction element.
  • the arrangement of the heat conduction element improves the gap between the electrode assembly and the end cover. Excellent heat transfer efficiency makes it easier for the heat generated by the electrode assembly to be transferred to the end cover through the heat conducting member, effectively improving the heat dissipation performance of the battery cell and increasing the service life of the battery cell.
  • the insulator is provided with a notch facing the receiving groove of the end cover, and the heat conducting member is at least partially accommodated in the receiving groove; the heat conducting member is included in the thickness of the end cover.
  • the heat conduction element is at least partially accommodated in the accommodation groove of the insulating element, and the accommodation groove acts as a restriction on the heat conduction element, so as to realize the embedding of the heat conduction element in the insulation element.
  • the first bonding surface of the heat conduction element is bonded to the end cover to realize the bonding between the heat conduction element and the end cover, and the second bonding surface of the heat conduction element is bonded to the bottom surface of the accommodating groove.
  • the gap between the heat conduction element and the electrode assembly can be reduced.
  • the distance between the heat-conducting part and the electrode assembly is reduced, and on the other hand, the contact area between the heat-conducting part and the insulating part can be increased, and the heat transfer efficiency between the insulating part and the heat-conducting part can be improved, so that the heat on the insulating part can be The heat is quickly transferred to the heat conducting parts, further improving the heat dissipation performance of the battery cell.
  • the insulating member includes an insulating part located at the bottom of the receiving groove, and the insulating part is used to separate the electrode assembly and the heat conducting member; the depth of the receiving groove is larger than that of the insulating part thickness of.
  • the depth of the accommodating groove is greater than the thickness of the insulating part separating the electrode assembly and the heat conducting part, the insulating part is relatively thin, and the heat generated by the electrode assembly is more easily transferred to the heat conducting part through the insulating part, so as to take away the battery in time The heat inside the monomer.
  • the insulator has a third fitting surface for fitting with the end cap, the accommodating groove is recessed from the third fitting surface in a direction away from the end cap, the The third bonding surface is flush with the first bonding surface.
  • the third bonding surface of the insulator is flush with the first bonding surface of the heat-conducting element, so that the first bonding surface and the third bonding surface can be bonded to the end cap at the same time, which is convenient for the heat-conducting element and the insulation
  • the heat on the component is transferred to the end cover, which is beneficial to the heat dissipation inside the battery cell.
  • a limiting member is provided on the insulating member, and the limiting member is used to restrict the heat conduction member from detaching from the insulating member.
  • the stopper on the insulator plays a restrictive role on the heat conduction member, so as to restrict the heat conduction member from detaching from the insulator, so as to facilitate the assembly of the battery cells.
  • the insulator is provided with a receiving groove with a notch facing the end cover, and the heat conducting member is at least partially accommodated in the receiving groove; the limiting member is used to limit the heat conducting member separated from the bottom surface of the receiving tank.
  • the limiting member plays a role of restricting the heat conduction member from the bottom surface of the receiving groove, so that the heat conduction member is always kept in contact with the bottom surface of the receiving groove, so as to improve the heat transfer efficiency between the insulating member and the heat conduction member , so that the heat on the insulating part can be quickly transferred to the heat conducting part.
  • a limiting gap is formed between at least a part of the limiting member and the bottom surface, and the limiting gap is used to accommodate a part of the heat conducting member, In order to limit the separation of the heat conducting element from the bottom surface.
  • the heat conduction element is accommodated in the limit gap formed between the limit element and the bottom surface, so as to realize the limit of the heat conduction element, so as to achieve the purpose of restricting the heat conduction element from detaching from the bottom surface of the accommodating groove.
  • the bit structure is simple.
  • the heat conduction member is provided with a through hole for accommodating the limiting member, and a limiting protrusion is formed on the hole wall of the through hole;
  • the limiting member includes interconnection The connecting portion and the limiting portion, the connecting portion is connected to the bottom surface, the limiting gap is formed between the limiting portion and the bottom surface, and the limiting gap is used to accommodate the limiting protrusion .
  • the position-limiting protrusion on the hole wall of the through hole of the heat-conducting element is accommodated in the position-limiting gap formed between the position-limiting part and the bottom surface of the receiving groove, and the insulating element and the heat-conducting element are snapped together through the position-limiting element.
  • the limiting member protrudes from the bottom surface, and the end of the limiting member facing away from the bottom surface is formed with a fourth bonding surface, and the fourth bonding surface is used for bonding with the end cap. combine.
  • the fourth bonding surface of the limiting member is bonded to the end cover, which is beneficial to transfer the heat on the insulating member to the end cover.
  • the end cap is configured to attach to a thermal management component for managing the temperature of the battery cell.
  • the end cover is used for attaching the heat management component, and the battery cell can conduct heat transfer with the heat management component through the end cover, so as to adjust the temperature of the battery cell through the heat management component. Since the insulator is embedded with a heat conduction member, the heat management efficiency of the heat management component on the battery cell can be effectively improved, so that the battery cell is within a reasonable operating temperature.
  • the end cover has an adhering portion for attaching to the heat management component, and the heat conducting element is used for adhering to the adhering portion.
  • the bonding part of the end cover is used not only for attaching to the thermal management component, but also for bonding with the bonding part, which can shorten the heat transfer path between the thermal management component and the heat conducting element, and improve the thermal management.
  • the projection of the heat management component at least partially overlaps with the projection of the heat conducting element.
  • the projection of the heat management component in the thickness direction of the end cap and the projection of the heat conduction element in the thickness direction of the end cap at least partially overlap, which can effectively shorten the heat transfer path between the heat management component and the heat conduction element, and improve The thermal influence efficiency of the thermal management components on the battery cell is studied.
  • the heat conducting element is made of metal.
  • the heat conduction element is made of metal, so that the heat conduction element has a good heat conduction capacity.
  • an embodiment of the present application provides a battery, including: the battery cell provided in any one embodiment of the first aspect; and a box for accommodating the battery cell.
  • the battery further includes a thermal management component for attaching to the end cap, the thermal management component for managing the temperature of the battery cells.
  • the embodiments of the present application provide an electric device, including the battery provided in any one embodiment of the second aspect.
  • an embodiment of the present application provides a method for manufacturing a battery cell, the method comprising: providing a housing having an opening; providing an electrode assembly; providing an end cover, an insulating member, and a heat conducting member, the The insulator is located on one side of the end cover, the heat conduction member is embedded in the insulator, and the heat conduction member is configured to be attached to the end cover; the electrode assembly is accommodated in the housing; the The end cap covers the opening so that the insulator is located on a side of the end cap facing the electrode assembly.
  • the embodiment of the present application further provides a battery cell manufacturing equipment, including: a first providing device for providing a casing, the casing has an opening; a second providing device for providing an electrode assembly;
  • the third providing device is used to provide an end cover, an insulating part and a heat conducting part, the insulating part is located on one side of the end cover, the heat conducting part is embedded in the insulating part, and the heat conducting part is configured to be compatible with the heat conducting part
  • the end cover is pasted; the assembly device is used to accommodate the electrode assembly in the casing; the assembly device is also used to cover the end cover on the opening, so that the insulator is located on the end cover The side facing the electrode assembly.
  • Fig. 1 is a schematic structural diagram of a vehicle provided by some embodiments of the present application.
  • Fig. 2 is a schematic structural diagram of a battery provided by some embodiments of the present application.
  • Fig. 3 is an exploded view of a battery cell provided by some embodiments of the present application.
  • Fig. 4 is a schematic structural view of the end cap assembly shown in Fig. 3;
  • Fig. 5 is a partial enlarged view of A of the end cap assembly shown in Fig. 4;
  • Fig. 6 is a partial exploded view of the end cap assembly shown in Fig. 4;
  • Fig. 7 is a diagram showing the positional relationship between the end cover assembly and the heat management component
  • FIG. 8 is a flowchart of a method for manufacturing a battery cell provided in some embodiments of the present application.
  • Fig. 9 is a schematic block diagram of a battery cell manufacturing equipment provided by some embodiments of the present application.
  • Icons 10-box; 11-first part; 12-second part; 20-battery unit; 21-housing; 22-electrode assembly; 221-positive tab; 222-negative tab; 23-end cover ;231-positive electrode terminal; 232-negative electrode terminal; 233-main body; 2331-fitting part; 234-convex part; 235-recessed part; Side; 242-insulating part; 243-third bonding surface; 244-limiting part; 2441-connecting part; 2442-limiting part; 2443-fourth bonding surface; 245-limiting gap; ;251-first fitting surface; 252-second fitting surface; 253-through hole; 2531-limit protrusion; 30-heat management component; -motor; 1000-vehicle; 2000-manufacturing equipment; 2100-first providing device; 2200-second providing device; 2300-third providing device; 2400-assembling device; thickness direction.
  • connection In the description of this application, it should be noted that, unless otherwise clearly stipulated and limited, the terms “installation”, “connection”, “connection” and “attachment” should be understood in a broad sense, for example, it may be a fixed connection, It can also be detachably connected or integrally connected; it can be directly connected or indirectly connected through an intermediary, and it can be internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.
  • “Plurality” in this application refers to two or more (including two).
  • the battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, which are not limited in the embodiments of the present application.
  • the battery cell can be in the form of a cylinder, a flat body, a cuboid or other shapes, which is not limited in this embodiment of the present application.
  • Battery cells are generally divided into three types according to packaging methods: cylindrical battery cells, square battery cells and pouch battery cells, which are not limited in this embodiment of the present application.
  • the battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity.
  • the battery mentioned in this application may include a battery module or a battery pack, and the like.
  • Batteries generally include a case for enclosing one or more battery cells. The box can prevent liquid or other foreign objects from affecting the charging or discharging of the battery cells.
  • the battery cell includes an electrode assembly and an electrolyte, and the electrode assembly is composed of a positive pole piece, a negative pole piece and a separator.
  • a battery cell works primarily by moving metal ions between the positive and negative pole pieces.
  • the positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer, the positive electrode active material layer is coated on the surface of the positive electrode current collector, and the positive electrode collector without the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer. Fluid, the positive electrode current collector not coated with the positive electrode active material layer is used as the positive electrode tab.
  • the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobaltate, lithium iron phosphate, ternary lithium or lithium manganate.
  • the negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer, the negative electrode active material layer is coated on the surface of the negative electrode current collector, and the negative electrode collector without the negative electrode active material layer protrudes from the negative electrode collector coated with the negative electrode active material layer. Fluid, the negative electrode current collector not coated with the negative electrode active material layer is used as the negative electrode tab.
  • the material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon or silicon.
  • the number of positive pole tabs is multiple and stacked together, and the number of negative pole tabs is multiple and stacked together.
  • the material of the isolation film may be PP (polypropylene, polypropylene) or PE (polyethylene, polyethylene).
  • the electrode assembly may be a wound structure or a laminated structure, which is not limited in the embodiment of the present application.
  • an insulating member needs to be provided between the end cap and the electrode assembly to insulate the end cap from the electrode assembly.
  • the insulation isolation between the end cover and the electrode assembly is achieved through the insulator, due to the poor thermal conductivity of the insulator, the heat generated by the electrode assembly is not easily transferred to the end cover through the insulator, making it difficult to dissipate the heat inside the battery cell , as the internal heat of the battery cell continues to accumulate, the temperature inside the battery cell will gradually rise, affecting the performance of the battery cell, and even the risk of explosion will affect the life of the battery cell.
  • the embodiment of the present application provides a battery cell.
  • a heat conduction member in the insulating member and bonding the heat conduction member to the end cap, the heat generated by the electrode assembly of the battery cell can be transferred to the battery cell through the heat conduction member. end cap.
  • the arrangement of the heat conduction member improves the heat transfer efficiency between the electrode assembly and the end cover, so that the heat generated by the electrode assembly can be more easily transferred to the end cover through the heat conduction member, effectively improving the battery cell.
  • the heat dissipation performance increases the service life of the battery cell.
  • the battery cells provided in the embodiments of the present application are applicable to batteries and electric devices using the battery cells.
  • Electrical devices can be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys and power tools, etc.
  • Vehicles can be fuel vehicles, gas vehicles or new energy vehicles, and new energy vehicles can be pure electric vehicles, hybrid vehicles or extended-range vehicles;
  • spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.;
  • electric toys include fixed Type or mobile electric toys, such as game consoles, electric car toys, electric boat toys and electric airplane toys, etc.;
  • electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, for example, Electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, electric planers, and more.
  • the embodiment of the present application does not impose special limitations on the above electric equipment.
  • FIG. 1 is a schematic structural diagram of a vehicle 1000 provided by some embodiments of the present application.
  • a battery 100 is disposed inside the vehicle 1000 .
  • the battery 100 can be used for power supply of the vehicle 1000 , for example, the battery 100 can be used as an operating power source of the vehicle 1000 .
  • the vehicle 1000 may further include a controller 200 and a motor 300 , the controller 200 is used to control the battery 100 to supply power to the motor 300 , for example, for starting, navigating and running the vehicle 1000 .
  • the battery 100 can not only be used as an operating power source for the vehicle 1000 , but can also be used as a driving power source for the vehicle 1000 , replacing or partially replacing fuel oil or natural gas to provide driving power for the vehicle 1000 .
  • FIG. 2 is a schematic structural diagram of a battery 100 provided by some embodiments of the present application.
  • the battery 100 includes a box body 10 and a battery cell 20 .
  • the box body 10 is used to accommodate the battery cell 20 .
  • the box body 10 is used to provide accommodating space for the battery cells 20 , and the box body 10 may adopt various structures.
  • the box body 10 may include a first part 11 and a second part 12 , and the first part 11 and the second part 12 cover each other to define an accommodating space for accommodating the battery cells 20 .
  • the first part 11 and the second part 12 can be in various shapes, such as cuboid, cylinder and so on.
  • the first part 11 can be a hollow structure with one side open
  • the second part 12 can also be a hollow structure with one side open.
  • the open side of the second part 12 is covered with the open side of the first part 11 to form a box with accommodating space.
  • Body 10 It is also possible that the first part 11 is a hollow structure with one side open, the second part 12 is a plate-like structure, and the second part 12 covers the open side of the first part 11 to form a box body 10 with a receiving space.
  • the first part 11 and the second part 12 can be sealed by a sealing element, and the sealing element can be a sealing ring, a sealant, or the like.
  • the battery 100 there may be one or a plurality of battery cells 20 . If there are multiple battery cells 20 , the multiple battery cells 20 may be connected in series, in parallel or in parallel.
  • the mixed connection means that the multiple battery cells 20 are both in series and in parallel.
  • a plurality of battery cells 20 may be connected in series or in parallel or mixed to form a battery module, and then a plurality of battery modules may be connected in series or in parallel or mixed to form a whole and accommodated in the box 10 . It is also possible that all the battery cells 20 are directly connected in series, parallel or mixed together, and then all the battery cells 20 are housed in the case 10 as a whole.
  • the battery 100 may further include a confluence component, through which the plurality of battery cells 20 may be electrically connected, so as to realize series connection, parallel connection or mixed connection of the plurality of battery cells 20 .
  • the bus component may be a metal conductor, such as copper, iron, aluminum, stainless steel, aluminum alloy, and the like.
  • the battery 100 may further include a thermal management component 30 (not shown in FIG. 2 ), and the thermal management component 30 is used to manage the temperature of the battery cell 20 .
  • the thermal management component 30 is a component for managing the temperature of the battery cell 20 , and managing the temperature of the battery cell 20 refers to heating or cooling the battery cell 20 . That is to say, the thermal management component 30 may be a heating component for heating the battery cell 20 or a cooling component for cooling the battery cell 20 .
  • the thermal management component 30 may be a component for containing fluid to adjust the temperature of the battery cell 20 , where the fluid may be liquid or gas, such as water, a mixture of water and ethylene glycol, or air.
  • the temperature of the battery cell 20 can be managed by the thermal management component 30 to control the battery cell 20 within a reasonable operating temperature, so as to ensure the performance of the battery cell 20 and improve the service life of the battery cell 20 .
  • FIG. 3 is an exploded view of a battery cell 20 provided in some embodiments of the present application.
  • the battery cell 20 includes a casing 21, an electrode assembly 22, and an end cap assembly.
  • the end cap assembly includes an end cap 23 and an insulator. twenty four.
  • the casing 21 is a component for accommodating the electrode assembly 22 and may be a hollow structure with an opening formed at one end.
  • the housing 21 can be in various shapes, such as cylinder, cuboid and so on. The shape of the case 21 may be determined according to the shape of the electrode assembly 22 . If the electrode assembly 22 has a cylindrical structure, the casing 21 can be a cylindrical structure; if the electrode assembly 22 is a rectangular parallelepiped, the casing 21 can be a rectangular parallelepiped.
  • the housing 21 can be made of various materials, such as copper, iron, aluminum, steel, aluminum alloy and so on.
  • Electrodes assemblies 22 there may be one or more electrode assemblies 22 in the housing 21 .
  • there are a plurality of electrode assemblies 22 and the plurality of electrode assemblies 22 are stacked along the width direction Y of the end cap 23 .
  • the electrode assembly 22 is a part where electrochemical reactions occur in the battery cell 20 .
  • the electrode assembly 22 may include a positive electrode tab, a negative electrode tab, and a separator.
  • the electrode assembly 22 may be a wound structure formed by winding the positive electrode sheet, the separator and the negative electrode sheet.
  • the electrode assembly 22 may also be a stacked structure formed by stacking the positive pole piece, the separator and the negative pole piece.
  • the positive electrode sheet may include a positive electrode collector and a positive electrode active material layer coated on opposite sides of the positive electrode collector.
  • the negative electrode sheet may include a negative electrode current collector and a negative electrode active material layer coated on opposite sides of the negative electrode current collector.
  • the electrode assembly 22 has a positive pole tab 221 and a negative pole tab 222.
  • the positive pole tab 221 can be the part of the positive pole piece that is not coated with the positive active material layer
  • the negative pole tab 222 can be the part that is not coated with the negative pole active material layer on the negative pole piece. part.
  • the end cap 23 is a component that covers the opening of the casing 21 to isolate the internal environment of the battery cell 20 from the external environment.
  • the end cap 23 covers the opening of the casing 21 , and the end cap 23 and the casing 21 jointly define a sealed space for accommodating the electrode assembly 22 , electrolyte and other components.
  • the shape of the end cap 23 can be adapted to the shape of the housing 21.
  • the housing 21 is a rectangular parallelepiped structure
  • the end cap 23 is a rectangular plate-shaped structure compatible with the housing 21.
  • the housing 21 is a cylinder. structure
  • the end cover 23 is a circular plate-shaped structure that fits with the housing 21.
  • the material of the end cover 23 can also be various, for example, copper, iron, aluminum, steel, aluminum alloy, etc.
  • the material of the end cover 23 and the material of the shell 21 can be the same or different.
  • Electrode terminals can be provided on the end cap 23 , and the electrode terminals are used for electrical connection with the electrode assembly 22 to output the electric energy of the battery cell 20 .
  • the electrode terminals may include a positive electrode terminal 231 and a negative electrode terminal 232 , the positive electrode terminal 231 is used for electrical connection with the positive electrode tab 221 , and the negative electrode terminal 232 is used for electrically connecting with the negative electrode tab 222 .
  • the positive electrode terminal 231 may be electrically connected to the positive tab 221 through a current collecting member, and the negative electrode terminal 232 may be electrically connected to the negative tab 222 through another current collecting member.
  • the insulator 24 is a component for isolating the end cap 23 from the electrode assembly 22 , and the insulation isolation between the end cap 23 and the electrode assembly 22 is achieved through the insulator 24 to reduce the risk of positive and negative short circuits.
  • the insulating member 24 is an insulating material, and the insulating member 24 may be an insulating material such as plastic or rubber.
  • FIG. 4 is a schematic structural diagram of the end cap assembly shown in FIG. , insulating member 24 and heat conducting member 25 .
  • the housing 21 has an opening.
  • the electrode assembly 22 is used to be accommodated in the casing 21 .
  • the end cap 23 is used to cover the opening.
  • the insulator 24 is located on the side of the end cap 23 facing the electrode assembly 22 , and the insulator 24 is used to isolate the end cap 23 and the electrode assembly 22 .
  • the heat conduction element 25 is embedded in the insulating element 24 , and the heat conduction element 25 is configured to be attached to the end cover 23 .
  • heat conducting elements 25 embedded in the insulating element 24 .
  • the material of the heat conduction member 25 can be various, for example, metal, ceramic, quartz, marble, heat conduction glue and the like.
  • the heat conduction member 25 has good thermal conductivity, and the thermal conductivity of the heat conduction member 25 is greater than the thermal conductivity of the insulating member 24, that is, the thermal conductivity of the heat conduction member 25 is better than that of the insulating member 24, so as to improve the poor thermal conductivity of the insulating member 24 and prevent the
  • the heat inside the battery cell 20 is dissipated in time.
  • the heat conducting part 25 is made of aluminum, and the insulating part 24 is made of rubber, and the thermal conductivity of the aluminum material is obviously greater than that of the rubber material.
  • the heat conduction element 25 is embedded in the insulating element 24 , so that the heat conduction element 25 is closer to the electrode assembly 22 , which facilitates heat dissipation inside the battery cell 20 .
  • the heat conduction element 25 is configured to be attached to the end cover 23 ” means that the heat conduction element 25 is in direct contact with the end cover 23 , so that the heat absorbed by the heat conduction element 25 can be transferred to the end cover 23 more efficiently.
  • the heat conduction element 25 may be in a state of always being in contact with the end cover 23 , or may be in a state of being in contact with the end cover 23 only in certain scenarios.
  • the battery cell 20 when the battery cell 20 is upright (the opening of the housing 21 faces upwards, and the end cover 23 is located on the top of the housing 21), there may be a gap between the insulating member 24 and the end cover 23 under the action of gravity, so that the heat conducting member There is a small gap between 25 and the end cover 23, and the heat conduction member 25 is not in contact with the end cover 23; but when the battery cell 20 is turned upside down (the opening of the housing 21 faces downward, and the end cover 23 is located at the bottom of the housing 21), The insulator 24 moves down under the action of its own gravity and the gravity of the electrode assembly 22 and the electrolyte, so that the heat conducting element 25 is in contact with the end cap 23 .
  • the battery cell 20 is turned upside down and the battery cell 20 is placed upright with the heat conducting member 25 always in contact with the end cover 23 .
  • the heat generated by the electrode assembly 22 can be efficiently transferred to the end cover 23 through the heat conduction member 25, and the heat conduction member
  • the setting of 25 improves the heat transfer efficiency between the electrode assembly 22 and the end cover 23, so that the heat generated by the electrode assembly 22 can be more easily transferred to the end cover 23 through the heat conducting member 25, effectively improving the heat dissipation performance of the battery cell 20, The service life of the battery cell 20 is increased.
  • FIG. 5 is a partial enlarged view of A of the end cap assembly shown in FIG. Some of them are accommodated in the receiving groove 241 .
  • the heat conduction member 25 includes a first bonding surface 251 and a second bonding surface 252 oppositely arranged in the thickness direction Z of the end cover 23, the first bonding surface 251 is used for bonding with the end cover 23, and the second bonding surface 252 is used for accommodating the bottom surface 2411 of the groove 241 .
  • the heat conduction element 25 is at least partially accommodated in the accommodation groove 241 , and the heat conduction element 25 may be completely accommodated in the accommodation groove 241 , or the heat conduction element 25 may be partially accommodated in the accommodation groove 241 . If the heat conduction element 25 is completely located in the accommodation groove 241, the first bonding surface 251 of the heat conduction element 25 for bonding with the end cover 23 is located in the accommodation groove 241. In this case, the end cover 23 can partially face the accommodation groove. 241 to be bonded to the first bonding surface 251 of the heat conducting element 25; outside the receiving slot 241 .
  • the notch of the receiving groove 241 faces the end cover 23, so that the receiving groove 241 has a bottom surface 2411 and a groove side 2412.
  • the groove side 2412 is surrounded by the edge of the bottom surface 2411.
  • the notch is located on the groove side 2412
  • the top, the bottom surface 2411 is located at the bottom of the groove side 2412.
  • the heat conducting element 25 is accommodated in the containing groove 241 , and the side surface 2412 of the groove is located on the outer peripheral side of the heat conducting element 25 .
  • the outer peripheral surface of the heat conduction element 25 is the surface of the heat conduction element 25 except the first bonding surface 251 and the second bonding surface 252 .
  • the shape of the accommodating groove 241 can be adapted to the shape of the heat-conducting element 25.
  • the heat-conducting element 25 is a rectangular block, and the accommodating groove 241 can be a rectangular groove matching the heat-conducting element 25.
  • the heat-conducting element 25 is a round shape block, the receiving groove 241 can be a circular groove matching with the heat conducting element 25 .
  • Both the first bonding surface 251 and the second bonding surface 252 can be planes. Taking the heat conducting element 25 as a block as an example, the first bonding surface 251 and the second bonding surface 252 can be the heat conducting element 25 on the end cover. 23 on the two end surfaces in the thickness direction Z.
  • the heat conduction element 25 is at least partially accommodated in the accommodation groove 241 of the insulating element 24 , and the accommodation groove 241 plays a limiting role on the heat conduction element 25 , so that the heat conduction element 25 is embedded in the insulation element 24 .
  • the first bonding surface 251 of the heat conducting element 25 is bonded to the end cover 23 , so that the heat conducting element 25 is bonded to the end cover 23 .
  • the second bonding surface 252 of the heat conduction member 25 is bonded to the bottom surface 2411 of the receiving groove 241.
  • the distance between the heat conduction member 25 and the electrode assembly 22 can be reduced, and the heat dissipation distance between the heat conduction member 25 and the electrode assembly 22 is reduced.
  • the heat generated by the assembly 22 can be more easily transferred to the heat-conducting member 25, on the other hand, the contact area between the heat-conducting member 25 and the insulating member 24 can be increased, and the heat transfer efficiency between the insulating member 24 and the heat-conducting member 25 is improved, so that the insulating member The heat on 24 can be quickly transferred to the heat conducting element 25 , further improving the heat dissipation performance of the battery cell 20 .
  • the insulating member 24 includes an insulating portion 242 located at the bottom of the receiving groove 241 , and the insulating portion 242 is used to separate the electrode assembly 22 (shown in FIG. 3 ) and the heat conducting member 25 .
  • the depth of the receiving groove 241 is greater than the thickness of the insulating part 242 .
  • the insulating part 242 refers to the part of the insulating part 24 located at the bottom of the receiving groove 241 and separating the electrode assembly 22 and the heat conducting part 25 .
  • the heat conducting member 25 is located on a side of the insulating portion 242 away from the electrode assembly 22 , and the insulating portion 242 functions to separate the electrode assembly 22 and the heat conducting member 25 .
  • the depth of the receiving groove 241 is the dimension of the receiving groove 241 in the thickness direction Z of the end cover 23
  • the thickness of the insulating portion 242 is the dimension of the insulating portion 242 in the thickness direction Z of the end cover 23 .
  • the depth of the receiving groove 241 is greater than the thickness of the insulating part 242 separating the electrode assembly 22 and the heat conducting element 25, and the insulating part 242 is relatively thin, so that the heat generated by the electrode assembly 22 is more easily transferred to the heat conducting part 242. 25, so as to take away the heat inside the battery cell 20 in time.
  • the insulator 24 has a third fitting surface 243 for bonding with the end cap 23 , and the receiving groove 241 is recessed from the third fitting surface 243 toward the direction away from the end cap 23 , the third bonding surface 243 is flush with the first bonding surface 251 .
  • the third bonding surface 243 is flush with the first bonding surface 251 , that is, the third bonding surface 243 is coplanar with the first bonding surface 251 . Since the receiving groove 241 is recessed from the third bonding surface 243 to the direction away from the end cover 23, and the first bonding surface 251 of the heat conducting element 25 is flush with the third bonding surface 243 of the insulating element 24, the heat conducting element 25 does not have any A part is located outside the receiving groove 241 , which belongs to the situation that the heat conducting element 25 is completely accommodated in the receiving groove 241 .
  • the third bonding surface 243 of the insulator 24 is flush with the first bonding surface 251 of the heat conducting element 25, the first bonding surface 251 and the third bonding surface 243 can be connected to the end cap at the same time. 23, so that the heat on the heat conducting part 25 and the insulating part 24 is transferred to the end cover 23, and the heat inside the battery cell 20 is facilitated to dissipate.
  • the structure of the insulator 24 and the end cap 23 is more compact, which can free up more space for the electrode assembly 22, which is conducive to lifting the battery cell 20. energy density.
  • the insulating member 24 is provided with a limiting member 244 , and the limiting member 244 is used to limit the heat conduction member 25 from detaching from the insulating member 24 .
  • the limiting member 244 is a component that restricts the thermal conduction member 25 from detaching from the insulating member 24 .
  • the restricting member 244 can have various structures, as long as it can restrict the detaching of the heat conducting member 25 from the insulating member 24 .
  • the limiting element 244 restricts the heat conducting element 25 from detaching from the insulating element 24 , which can be understood as the limiting element 244 restricts the heat conducting element 25 from detaching from the accommodating groove 241 .
  • the heat conducting element 25 can be disposed on the bottom surface 2411 of the receiving groove 241 , and can also be disposed on the groove side 2412 of the receiving groove 241 .
  • the limiting member 244 and the insulating member 24 may be integrally formed or separated.
  • limiting members 244 that restrict the heat conduction member 25 from detaching from the insulating member 24 .
  • the limiting member 244 on the insulating member 24 plays a limiting role on the heat-conducting member 25 to limit the heat-conducting member 25 from separating from the insulating member 24, so as to ensure that the heat-conducting member 25 is always in contact with the insulating member 24, which is convenient for the insulating member 24.
  • the heat is transferred to the heat conducting member 25 .
  • the heat conducting element 25 will not be detached from the insulator 24 , which facilitates the assembly of the battery cell 20 .
  • the limiting member 244 can be used to limit the separation of the heat conducting element 25 from the bottom surface 2411 of the receiving groove 241 .
  • the limiter 244 is a component that restricts the separation of the heat-conducting member 25 from the bottom surface 2411 of the receiving groove 241. Under the restriction of the limiter 244, the heat-conducting member 25 will not shake up and down in the receiving groove 241, ensuring that the heat-conducting member 25 is accommodated. Stability within groove 241.
  • the limiting member 244 plays a role in restricting the heat conduction member 25 from the bottom surface 2411 of the receiving groove 241, so that the heat conduction member 25 is always kept in contact with the bottom surface 2411 of the receiving groove 241, so as to improve the distance between the insulating member 24 and the heat conduction member 25.
  • the heat transfer efficiency is high, so that the heat on the insulating member 24 can be quickly transferred to the heat conducting member 25 .
  • FIG. 6 is a partial exploded view of the end cap assembly shown in FIG.
  • a limiting gap 245 is formed between 2411 , and the limiting gap 245 is used for accommodating a part of the heat conducting element 25 so as to limit the separating of the heat conducting element 25 from the bottom surface 2411 of the receiving groove 241 .
  • a limiting gap 245 is formed between at least a part of the limiting member 244 and the bottom surface 2411 of the receiving groove 241 .
  • a limiting gap 245 may be formed between the whole of the limiting member 244 and the bottom surface 2411 of the receiving groove 241.
  • the limiting member 244 is an annular structure protruding from the groove side 2412 of the receiving groove 241, and the limiting member 244 as a whole and There is a distance between the bottom surface 2411 of the receiving groove 241 to form a limiting gap 245 . It is also possible to form a limiting gap 245 between a part of the limiting member 244 and the receiving groove 241 and the bottom surface 2411 of the receiving groove 241. There is a distance from the bottom surface 2411 of the receiving groove 241 to form a limiting gap 245 .
  • At least a part of the heat conduction element 25 is accommodated in the limit gap 245 formed between the limit element 244 and the bottom surface 2411 of the receiving groove 241 to realize the limit of the heat conduction element 25 in the thickness direction Z of the end cover 23 to achieve
  • the purpose of restricting the heat conduction element 25 from detaching from the bottom surface 2411 of the receiving groove 241 is that the limiting structure is simple.
  • the heat conducting member 25 is provided with a through hole 253 for accommodating the limiting member 244 , and a limiting protrusion 2531 is formed on the wall of the through hole 253 .
  • the limiting member 244 includes a connecting portion 2441 and a limiting portion 2442 connected to each other.
  • the connecting portion 2441 is connected to the bottom surface 2411 of the receiving groove 241.
  • a limiting gap 245 is formed between the limiting portion 2442 and the bottom surface 2411 of the receiving groove 241. The limiting gap 245 is used to accommodate the limit protrusion 2531 .
  • the limiting member 244 and the insulating member 24 can be integrally formed, and the materials of the limiting member 244 and the insulating member 24 can be the same, for example, the materials of the limiting member 244 and the insulating member 24 are both rubber or plastic.
  • the stopper 2442 of the stopper 244 can be an elastic member with a certain elastic deformation capacity. When the stopper 244 penetrates the through hole 253 on the heat conducting member 25, the stopper 2442 is on the side of the stopper 2531 Elastic deformation occurs under extrusion, so that the limiting portion 2442 passes over the limiting protrusion 2531 , so that the limiting protrusion 2531 is locked in the limiting gap 245 between the limiting portion 2442 and the bottom surface 2411 of the receiving groove 241 .
  • the connecting portion 2441 of the limiting member 244 can be a cylindrical structure
  • the limiting portion 2442 can be an annular structure arranged around the circumference of the connecting portion 2441
  • the limiting protrusion 2531 can also be a hole arranged around the through hole 253 Ring structure of the wall.
  • limiting pieces 244 there can be one or more limiting pieces 244 on the bottom surface 2411 of the receiving groove 241 , and the through holes 253 on the heat conducting element 25 correspond to the limiting pieces 244 .
  • a plurality of limiting elements 244 can be arranged not collinear, and the plurality of limiting elements 244 jointly limit the heat conducting element 25 .
  • three non-colinear limiting members 244 are disposed on the bottom surface 2411 of the receiving groove 241 .
  • the limiting protrusion 2531 on the hole wall of the through hole 253 of the heat conducting element 25 is accommodated in the limiting gap 245 formed between the limiting portion 2442 and the bottom surface 2411 of the receiving groove 241, and the insulating element 24 and
  • the heat-conducting element 25 is snap-fitted through the limiting element 244 , which facilitates disassembly and installation of the heat-conducting element 25 and the insulating element 24 .
  • the limiting member 244 protrudes from the bottom surface 2411 of the receiving groove 241, and the end of the limiting member 244 facing away from the bottom surface 2411 of the receiving groove 241 forms a fourth fitting surface 2443.
  • the bonding surface 2443 is used for bonding with the end cover 23 .
  • the fourth adhering surface 2443 is used for adhering to the end cover 23 so that the limiting member 244 is kept in contact with the end cover 23 .
  • the fourth fitting surface 2443 may be an end surface of an end of the limiting member 244 away from the bottom surface 2411 of the receiving groove 241 .
  • the fourth bonding surface 2443 and the third bonding surface 243 Flush that is, the fourth fitting surface 2443 is coplanar with the third fitting surface 243 , so that the limiting member 244 is completely located in the receiving groove 241 .
  • the limiting member 244 is partially located outside the receiving groove 241 .
  • the fourth bonding surface 2443 of the limiting member 244 is bonded to the end cover 23 , which is beneficial to transfer the heat on the insulating member 24 to the end cover 23 .
  • FIG. 7 is a positional diagram of the end cover assembly and the thermal management component 30 , the end cover 23 is used to attach to the thermal management component 30 , and the thermal management component 30 is used to manage the battery cell 20 temperature.
  • the end cover 23 is used to attach to the heat management component 30, and the end cover 23 and the heat management component 30 may only maintain a contact relationship, but the two are not connected and fixed, or the end cover 23 and the heat management component 30 may be fixedly connected to each other. Together, for example, the end cover 23 is fixedly connected to the thermal management component 30 through thermal conductive glue.
  • the thermal management component 30 is a component for managing the temperature of the battery cell 20 , and the thermal management component 30 can heat the battery cell 20 or cool the battery cell 20 . If the heat management component 30 heats the battery cell 20, the heat of the heat management component 30 can be transferred to the heat conduction member 25 through the end cover 23, and the heat conduction member 25 releases heat to heat the inside of the battery 100; if the heat management component 30 heats the battery cell The body 20 is cooled, the heat inside the battery cell 20 can be transferred to the end cover 23 through the heat conducting member 25 , and the heat management component 30 drives the heat on the end cover 23 to cool the battery cell 20 .
  • the end cap 23 is used for attaching the thermal management component 30, and the battery cell 20 can conduct heat transfer with the thermal management component 30 through the end cap 23, so as to adjust the temperature of the battery cell 20 through the thermal management component 30. temperature. Since the insulating member 24 is embedded with the heat conducting member 25, the thermal management efficiency of the thermal management component 30 on the battery cell 20 can be effectively improved, so that the battery cell 20 is within a reasonable operating temperature.
  • the end cover 23 has an adhering portion 2331 for attaching to the heat management component 30 , and the heat conducting member 25 is used for adhering to the adhering portion 2331 .
  • the bonding portion 2331 is a part where the end cover 23 is attached to the heat management component 30 and bonded to the heat conducting element 25 , and the bonding portion 2331 may be a plate-like structure located between the end cover 23 and the heat management component 30 .
  • the end cap 23 can be of various configurations.
  • the end cap 23 includes a main body 233 and a protrusion 234, the main body 233 is used to cover the opening of the housing 21 (not shown in FIG. 7 ), the protrusion 234 protrudes from the outer surface of the main body 233,
  • the inner surface of the main body 233 forms a concave portion 235 at a position corresponding to the convex portion 234, and the concave portion 235 is used to accommodate at least a part of the tab of the electrode assembly 22 (not shown in FIG. 7 ), so as to make more space for the electrode assembly 22 , which is beneficial to increase the energy density of the battery cell 20 .
  • the fitting part 2331 can be the part of the main body 233 located on both sides of the convex part 234 in the length direction X of the end cover 23 , that is to say, there are two fitting parts 2331 in the end cover 23 , and on the side of the end cover 23 In the longitudinal direction X, the two bonding portions 2331 are respectively located on two sides of the convex portion 234 .
  • the electrode terminals can be installed on the convex portion 234 of the end cover 23, for example, the positive electrode terminal 231 and the negative electrode terminal 232 are installed on the convex portion 234, and the positive electrode terminal 231 and the negative electrode terminal 232 are mounted on the end cover. 23 are arranged at intervals in the length direction X.
  • the escape hole 31 for avoiding the protrusion 234 may be provided on the heat management component 30 .
  • the bonding portion 2331 of the end cover 23 is used not only for attaching to the thermal management component 30 but also for bonding to the bonding portion 2331, which can shorten the heat transfer between the thermal management component 30 and the heat conducting element 25 The path improves the thermal influence efficiency of the thermal management component 30 on the battery cell 20 .
  • the projection of the heat management component 30 and the projection of the heat conducting element 25 at least partially overlap.
  • the bonding portion 2331 of the end cover 23 is attached to the thermal management component 30 and the end cover 23 is bonded to the heat conducting member 25, in the thickness direction Z of the end cover 23, the bonding portion 2331 may be located on the thermal management component 30 and the heat conducting member 25.
  • the heat management component 30 , the bonding portion 2331 and the heat conducting member 25 are stacked and arranged in the thickness direction Z of the end cover 23 .
  • the thermal management component 30 is attached to the outer surface of the bonding portion 2331 , and the heat conduction element 25 is bonded to the inner surface of the bonding portion 2331 .
  • the projection of the heat management component 30 on the thickness direction Z of the end cover 23 and the projection of the heat conduction member 25 on the thickness direction Z of the end cover 23 at least partially overlap, which can effectively shorten the distance between the heat management component 30 and the heat conduction member.
  • the heat transfer path between 25 improves the heat influence efficiency of the heat management component 30 on the battery cell 20 .
  • the heat conducting element 25 is made of metal.
  • the material of the heat conducting member 25 may be one or more of copper, iron, aluminum, steel, aluminum alloy and other materials. If the heat conduction element 25 is made of multiple materials, the heat conduction element 25 can be divided into multiple parts connected together, and the multiple parts can be made of different materials. For example, the heat conducting element 25 includes two parts connected together, one part is made of iron, and the other part is made of aluminum. Exemplarily, the heat conducting element 25 is a metal block, such as an aluminum block, embedded in the insulating element 24 .
  • the heat conduction element 25 is made of metal, and the heat conduction element 25 has good heat conduction capability.
  • An embodiment of the present application provides a battery 100 , including a box body 10 and a battery cell 20 provided in any one of the above embodiments, and the box body 10 is used for accommodating the battery cell 20 .
  • the battery 100 further includes a thermal management component 30 for attaching to the end cap 23 for managing the temperature of the battery cell 20 .
  • An embodiment of the present application provides an electric device, including the battery 100 provided in any one of the above embodiments.
  • the powered device may be any of the aforementioned devices using the battery 100 .
  • the embodiment of the present application also provides a prismatic battery 100 , including a casing 21 , an electrode assembly 22 , an end cap 23 , an insulating member 24 and a heat conducting member 25 .
  • the electrode assembly 22 is accommodated in the case 21 .
  • the end cap 23 includes a main body 233 and a protrusion 234, the main body 233 covers the opening of the housing 21, the protrusion 234 protrudes from the outer surface of the main body 233, and the inner surface of the main body 233 corresponds to the protrusion 234
  • the location is formed with a recess 235 for receiving at least a portion of the tab of the electrode assembly 22 .
  • the insulator 24 is located on the side of the end cap 23 facing the electrode assembly 22 , and the insulator 24 is used to isolate the end cap 23 and the electrode assembly 22 .
  • the heat conducting element 25 is embedded in the insulating element 24 , and the heat conducting element 25 is attached to the main body portion 233 of the end cover 23 . The heat generated by the electrode assembly 22 can be efficiently transferred to the main body 233 of the end cover 23 through the heat conduction member 25.
  • the arrangement of the heat conduction member 25 improves the heat transfer efficiency between the electrode assembly 22 and the end cover 23, so that the heat generated by the electrode assembly 22
  • the heat conduction element 25 can be more easily transmitted to the main body portion 233 of the end cover 23 , effectively improving the heat dissipation performance of the battery cell 20 and prolonging the service life of the battery cell 20 .
  • FIG. 8 is a flow chart of a method for manufacturing a battery cell 20 provided in some embodiments of the present application. The method includes:
  • S500 Cover the end cap 23 on the opening of the casing 21, so that the insulator 24 is located on a side of the end cap 23 facing the electrode assembly 22.
  • step S100, step S200, and step S300 is not limited.
  • step S300 may be executed first, then step S200, and then step S100.
  • the embodiment of the present application also provides a battery cell 20 manufacturing equipment 2000, please refer to FIG. 9, FIG. It includes a first providing device 2100 , a second providing device 2200 , a third providing device 2300 and an assembling device 2400 .
  • the first providing device 2100 is used for providing the casing 21, and the casing 21 has an opening.
  • the second providing device 2200 is used for providing the electrode assembly 22 .
  • the third providing device 2300 is used to provide the end cover 23, the insulating member 24 and the heat conducting member 25.
  • the insulating member 24 is located on one side of the end cover 23, the heat conducting member 25 is embedded in the insulating member 24, and the heat conducting member 25 is configured to be connected to the end cover 23.
  • the cover 23 fits.
  • the assembling device 2400 is used to house the electrode assembly 22 in the housing 21 ; the assembling device 2400 is also used to cover the end cap 23 on the opening, so that the insulator 24 is located on the side of the end cap 23 facing the electrode assembly 22 .

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Secondary Cells (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

本申请实施例提供了一种电池单体、电池、用电设备及电池单体的制造方法和设备，属于电池技术领域。其中，电池单体包括壳体、电极组件、端盖、绝缘件和导热件。壳体具有开口。电极组件用于容纳于壳体内。端盖用于盖合于开口。绝缘件位于端盖面向电极组件的一侧，绝缘件用于隔离端盖和电极组件。导热件嵌设于绝缘件内，导热件被配置为与端盖贴合。电极组件产生的热量能够通过导热件传递给端盖，导热件的设置提高了电极组件与端盖之间的传热效率，使得电极组件产生的热量通过导热件能够更容易地传递给端盖，有效提高电池单体的散热性能，增长了电池单体的使用寿命。

Description

电池单体、电池、用电设备及电池单体的制造方法和设备 技术领域
本申请涉及电池技术领域，具体而言，涉及一种电池单体、电池、用电设备及电池单体的制造方法和设备。
背景技术
电池广泛用于电子设备，例如手机、笔记本电脑、电瓶车、电动汽车、电动飞机、电动轮船、电动玩具汽车、电动玩具轮船、电动玩具飞机和电动工具等等。
电池单体一般通过金属离子在正极极片和负极极片之间移动来产生电能。电池单体在充放电过程中内部会产生热量，若电池单体内部的热量不能及时散出，则会直接电池单体的使用寿命。
因此，如何提高电池单体的使用寿命是电池技术中亟需解决的问题。
发明内容
本申请实施例提供一种电池单体、电池、用电设备及电池单体的制造方法和设备，能够有效提高电池单体的使用寿命。
第一方面，本申请实施例提供一种电池单体，包括：壳体，具有开口；电极组件，用于容纳于所述壳体内；端盖，用于盖合于所述开口；绝缘件，位于所述端盖面向所述电极组件的一侧，所述绝缘件用于隔离所述端盖和所述电极组件；导热件，嵌设于所述绝缘件内，所述导热件被配置为与所述端盖贴合。
上述技术方案中，绝缘件内嵌设有导热件，导热件与端盖贴合，电极组件产生的热量能够通过导热件高效传递给端盖，导热件的设置提高了电极组件与端盖之间的传热效率，使得电极组件产生的热量通过导热件能够更容易地传递给端盖，有效提高电池单体的散热性能，增长了电池单体的使用寿命。
在一些实施例中，所述绝缘件上设有槽口面向所述端盖的容纳槽，所述导热件至少部分容纳于所述容纳槽内；所述导热件包括在所述端盖的厚度方向上相对布置的第一贴合面和第二贴合面，所述第一贴合面用于与所述端盖贴合，所述第二贴合面用于所述容纳槽的底面贴合。
在上述技术方案中，导热件至少部分容纳于绝缘件的容纳槽内，容纳槽对导热件起到限制作用，实现导热件嵌设于绝缘件内。导热件的第一贴合面与端盖贴合，实现导热件与端盖贴合，导热件的第二贴合面与容纳槽的底面贴合，一方面能够缩小导热件与电极组件之间的距离，降低了导热件与电极组件的散热距离，另一方面能够增大导热件与绝缘件的接触面积，提高了绝缘件与导热件之间的传热效率，使得绝缘件上的热量能够快速传递给导热件，进一步提高了电池单体的散热性能。
在一些实施例中，所述绝缘件包括位于所述容纳槽的底部的绝缘部，所述绝缘部用于分隔所述电极组件和所述导热件；所述容纳槽的深度大于所述绝缘部的厚度。
在上述技术方案中，容纳槽的深度大于将电极组件和导热件分隔的绝缘部的厚度，绝缘部相对较薄，电极组件产生的热量更容易通过绝缘部传递给导热件，以及时带走电池单体内部的热量。
在一些实施例中，所述绝缘件具有用于与所述端盖贴合的第三贴合面，所述容纳槽从所述第三贴合面向背离所述端盖的方向凹陷，所述第三贴合面与所述第一贴合面平齐。
上述技术方案中，绝缘件的第三贴合面与导热件的第一贴合面平齐，使得第一贴合面与第三贴合面能够同时与端盖贴合，便于导热件和绝缘件上的热量传递给端盖，有利于电池单体内部的热量散出。
在一些实施例中，所述绝缘件上设有限位件，所述限位件用于限制所述导热件脱离所述绝缘件。
上述技术方案中，绝缘件上的限位件对导热件起到限制作用，以限制导热件脱离绝缘件，便于电池单体的组装。
在一些实施例中，所述绝缘件上设有槽口面向所述端盖的容纳槽，所述导热件至少部分容纳于所述容纳槽内；所述限位件用于限制所述导热件与所述容纳槽的底面分离。
上述技术方案中，限位件起到限制导热件脱离容纳槽的底面的作用，从而使导热件始终保持在与容纳槽的底面接触的状态，以提高绝缘件与导热件之间的传热效率，使得绝缘件上的热量能够快速传递给导热件。
在一些实施例中，在所述端盖的厚度方向上，所述限位件的至少一部分与所述底面之间形成限位间隙，所述限位间隙用于容纳所述导热件的一部分，以限制所述导热件与所述底面分离。
上述技术方案中，导热件的至少一部分容纳于限位件与底面之间形成的限位间隙内，以实现对导热件的限位，以达到限制导热件脱离于容纳槽的底面的目的，限位结构简单。
在一些实施例中，所述导热件设有通孔，所述通孔用于容纳所述限位件，所述通孔的孔壁上形成有限位凸起；所述限位件包括相互连接的连接部和限位部，所述连接部连接于所述底面，所述限位部与所述底面之间形成所述限位间隙，所述限位间隙用于容纳所述限位凸起。
上述技术方案中，导热件的通孔的孔壁上的限位凸起容纳于限位部与容纳槽的底面之间形成的限位间隙内，绝缘件与导热件通过限位件实现卡扣配合，便于导热件与绝缘件的拆卸及安装。
在一些实施例中，限位件凸出于所述底面，所述限位件背离所述底面的一端形成有第四贴合面，所述第四贴合面用于与所述端盖贴合。
上述技术方案中，限位件的第四贴合面与端盖贴合，有利于将绝缘件上的热量传递给端盖。
在一些实施例中，所述端盖用于与热管理部件附接，所述热管理部件用于管理所述电池单体的温度。
上述技术方案中，端盖用于热管理部件附接，电池单体能够通过端盖与热管理部件进行热传递，以便于通过热管理部件来调节电池单体的温度。由于绝缘件内嵌设有导热件，可有效提高热管理部件对电池单体的热管理效率，使得电池单体处于合理的使用温度内。
在一些实施例中，所述端盖具有用于与所述热管理部件附接的贴合部，所述导热件用于与所述贴合部贴合。
上述技术方案中，端盖的贴合部既用于与热管理部件附接，又用于与贴合部贴合，可缩短热管理部件与导热件之间的热传递路径，提高了热管理部件对电池单体的热影响效率。
在一些实施例中，在所述端盖的厚度方向上，所述热管理部件的投影与所述导热件的投影至少部分重叠。
上述技术方案中，热管理部件在端盖的厚度方向上的投影与导热件在端盖的厚度方向上的投影至少部分重叠，能够有效缩短热管理部件与导热件之间的热传递路径，提高了热管理部件对电池单体的热影响效率。
在一些实施例中，所述导热件为金属材质。
上述技术方案中，导热件为金属材质，使得导热件具有很好的导热能力。
第二方面，本申请实施例提供一种电池，包括：第一方面任意一个实施例提供的电池单体；以及箱体，用于容纳所述电池单体。
在一些实施例中，所述电池还包括热管理部件，所述热管理部件用于与所述端盖附接，所述热管理部件用于管理所述电池单体的温度。
第三方面，本申请实施例提供一种用电设备，包括第二方面任意一个实施例提供的电池。
第四方面，本申请实施例提供一种电池单体的制造方法，所述方法包括：提供壳体，所述壳体具有开口；提供电极组件；提供端盖、绝缘件和导热件，所述绝缘件位于端盖的一侧，所述导热件嵌设于所述绝缘件内，所述导热件被配置为与所述端盖贴合；将电极组件容纳于所述壳体内；将所述端盖盖合于所述开口，使得所述绝缘件位于所述端盖面向所述电极组件的一侧。
第五方面，本申请实施例还提供一种电池单体的制造设备，包括：第一提供装置，用于提供壳体，所述壳体具有开口；第二提供装置，用于提供电极组件；第三提供装置，用于提供端盖、绝缘件和导热件，所述绝缘件位于端盖的一侧，所述导热件嵌设于所述绝缘件内，所述导热件被配置为与所述端盖贴合；组装装置，用于将电极组件容纳于所述壳体内；所述组装装置还用于将所述端盖盖合于所述开口，使得所述绝缘件位于所述端盖面向所述电极组件的一侧。
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的结构示意图；
图3为本申请一些实施例提供的电池单体的爆炸图；
图4为图3所示的端盖组件的结构示意图；
图5为图4所示的端盖组件的A处局部放大图；
图6为图4所示的端盖组件的局部爆炸图；
图7为端盖组件与热管理部件位置关系图；
图8为本申请一些实施例提供的电池单体的制造方法的流程图；
图9为本申请一些实施例提供的电池单体的制造设备的示意性框图。
图标：10-箱体；11-第一部分；12-第二部分；20-电池单体；21-壳体；22-电极组件；221-正极极耳；222-负极极耳；23-端盖；231-正极电极端子；232-负极电极端子；233-主体部；2331-贴合部；234-凸部；235-凹部；24-绝缘件；241-容纳槽；2411-底面；2412-槽侧面；242-绝缘部；243-第三贴合面；244-限位件；2441-连接部；2442-限位部；2443-第四贴合面；245-限位间隙；25-导热件；251-第一贴合面；252-第二贴合面；253-通孔；2531-限位凸起；30-热管理部件；31-避让孔；100-电池；200-控制器；300-马达；1000-车辆；2000-制造设备；2100-第一提供装置；2200-第二提供装置；2300-第三提供装置；2400-组装装置；X-长度方向；Y-宽度方向；Z-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作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，不是旨在于限制本申请；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。
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。
在本申请的实施例中，相同的附图标记表示相同的部件，并且为了简洁，在不同实施例中，省略对相同部件的详细说明。应理解，附图示出的本申请实施例中的各种部件的厚度、长宽等尺寸，以及集成装置的整体厚度、长宽等尺寸仅为示例性说明，而不应对本申请构成任何限定。
本申请中出现的“多个”指的是两个以上(包括两个)。
本申请中，电池单体可以包括锂离子二次电池、锂离子一次电池、锂硫电池、钠锂离子电池、钠离子电池或镁离子电池等，本申请实施例对此并不限定。电池单体可呈圆柱体、扁平体、长方体或其它形状等，本申请实施例对此也不限定。电池单体一般按封装的方式分成三种：柱形电池单体、方形电池单体和软包电池单体，本申请实施例对此也不限定。
本申请的实施例所提到的电池是指包括一个或多个电池单体以提供更高的电压和容量的单一的物理模块。例如，本申请中所提到的电池可以包括电池模块或电池包等。电池一般包括用于封装一个或多个电池单体的箱体。箱体可以避免液体或其他异物影响电池单体的充电或放电。
电池单体包括电极组件和电解液，电极组件由正极极片、负极极片和隔离膜组成。电池单体主要依靠金属离子在正极极片和负极极片之间移动来工作。正极极片包括正极集流体和正极活性物质层，正极活性物质层涂覆于正极集流体的表面，未涂敷正极活性物质层的正极集流体凸出于已涂覆正极活性物质层的正极集流体，未涂敷正极活性物质层的正极集流体作为正极极耳。以锂离子电池为例，正极集流体的材料可以为铝，正极活性物质可以为钴酸锂、磷酸铁锂、三元锂或锰酸锂等。负极极片包括负极集流体和负极活性物质层，负极活性物质层涂覆于负极集流体的表面，未涂敷负极活性物质层的负极集流体凸出于已涂覆负极活性物质层的负极集流体，未涂敷负极活性物质层的负极集流体作为负极极耳。负极集流体的材料可以为铜，负极活性物质可以为碳或硅等。为了保证通过大电流而不发生熔断，正极极耳的数量为多个且层叠在一起，负极极耳的数量为多个且层叠在一起。隔离膜的材质可以为PP(polypropylene，聚丙烯)或PE(polyethylene，聚乙烯)等。此外，电极组件可以是卷绕式结构，也可以是叠片式结构，本申请实施例并不限于此。
发明人注意到，电池单体在充放电循环中，电池单体内部会产生热量，若电池单体内部的热量不能及时排出，则会影响电池单体的使用寿命。
发明人研究发现，在电池单体中，为实现端盖与电极组件的绝缘，需要在端盖与电极组件之间设置绝缘件，以将端盖与电极组件绝缘隔离。通过绝缘件虽然实现了端盖与电极组件的绝缘隔离，但由于绝缘件的导热能力较差，电极组件产生的热量不易通过绝缘件传递给端盖，导致电池单体内部的热量很难散出，随着电池单体的内部热量的不断累积，电池单体内部的温度将逐渐升高，影响电池单体的性能，甚至会出现爆炸的风险，影响电池单体的寿命。
鉴于此，本申请实施例提供一种电池单体，通过在绝缘件内嵌设导热件，并使导热件与端盖贴合，电池单体的电极组件产生的热量则能够通过导热件传递给端盖。
在这样的电池单体中，导热件的设置提高了电极组件与端盖之间的传热效率，使得电极组件产生的热量通过导热件能够更容易地传递给端盖，有效提高电池单体的散热性能，增长了电池单体的使用寿命。
本申请实施例提供的电池单体适用于电池以及使用电池单体的用电设备。
用电设备可以是车辆、手机、便携式设备、笔记本电脑、轮船、航天器、电动玩具和电动工具等等。车辆可以是燃油汽车、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；航天器包括飞机、火箭、航天飞机和宇宙飞船等等；电动玩具包括固定式 或移动式的电动玩具，例如，游戏机、电动汽车玩具、电动轮船玩具和电动飞机玩具等等；电动工具包括金属切削电动工具、研磨电动工具、装配电动工具和铁道用电动工具，例如，电钻、电动砂轮机、电动扳手、电动螺丝刀、电锤、冲击电钻、混凝土振动器和电刨等等。本申请实施例对上述用电设备不做特殊限制。
以下实施例为了方便说明，以用电设备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1000的结构示意图，车辆1000的内部设置有电池100，电池100可以设置在车辆1000的底部或头部或尾部。电池100可以用于车辆1000的供电，例如，电池100可以作为车辆1000的操作电源。
车辆1000还可以包括控制器200和马达300，控制器200用来控制电池100为马达300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。
在一些实施例中，电池100不仅仅可以作为车辆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。
请参照图2，图2为本申请一些实施例提供的电池100的结构示意图，电池100包括箱体10和电池单体20，箱体10用于容纳电池单体20。
其中，箱体10用于为电池单体20提供容纳空间，箱体10可以采用多种结构。在一些实施例中，箱体10可以包括第一部分11和第二部分12，第一部分11与第二部分12相互盖合，以限定出用于容纳电池单体20的容纳空间。
第一部分11和第二部分12可以是多种形状，比如，长方体、圆柱体等。第一部分11可以是一侧开放的空心结构，第二部分12也可以是一侧开放的空心结构，第二部分12的开放侧盖合于第一部分11的开放侧，则形成具有容纳空间的箱体10。也可以是第一部分11为一侧开放的空心结构，第二部分12为板状结构，第二部分12盖合于第一部分11的开放侧，则形成具有容纳空间的箱体10。
第一部分11与第二部分12可以通过密封元件来实现密封，密封元件可以是密封圈、密封胶等。
在电池100中，电池单体20可以是一个、也可以是多个。若电池单体20为多个，多个电池单体20之间可串联或并联或混联，混联是指多个电池单体20中既有串联又有并联。可以是多个电池单体20先串联或并联或混联组成电池模块，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10内。也可以是所有电池单体20之间直接串联或并联或混联在一起，再将所有电池单体20构成的整体容纳于箱体10内。
在一些实施例中，电池100还可以包括汇流部件，多个电池单体20之间可通过汇流部件实现电连接，以实现多个电池单体20的串联或并联或混联。
汇流部件可以是金属导体，比如，铜、铁、铝、不锈钢、铝合金等。
在一些实施例中，电池100还可以包括热管理部件30(图2未示出)，热管理部件30用于管理电池单体20的温度。
热管理部件30是用于管理电池单体20的温度的部件，管理电池单体20的温度是指给电池单体20加热或冷却。也就是说，热管理部件30可以是用于给电池单体20加热的加热部件，也可以是用于给电池单体20降温的冷却部件。
热管理部件30可以是用于容纳流体以给电池单体20调节温度的部件，这里的流体可以是液体或气体，比如，水、水和乙二醇的混合液或空气等。
通过热管理部件30能够管理电池单体20的温度，以将电池单体20控制在合理的使用温度内，以保证电池单体20的性能，提高电池单体20的使用寿命。
请参照图3，图3为本申请一些实施例提供的电池单体20的爆炸图，电池单体20包括壳体21、电极组件22和端盖组件，端盖组件包括端盖23和绝缘件24。
壳体21是用于容纳电极组件22的部件，可以是一端形成开口的空心结构。壳体21可以是多种形状，比如，圆柱体、长方体等。壳体21的形状可以根据电极组件22的形状来确定。若电极组件22为圆柱体结构，壳体21则可选用为圆柱体结构；若电极组件22为长方体结构，壳体21则可选用长方体结构。壳体21的材质可以是多种，比如，铜、铁、铝、钢、铝合金等。
壳体21内的电极组件22可以是一个，也可以是多个。例如，如图3所示，电极组件22为多个，多个电极组件22沿端盖23的宽度方向Y层叠布置。
电极组件22是电池单体20中发生电化学反应的部件。电极组件22可以包括正极极片、负极极片和隔离膜。电极组件22可以是由正极极片、隔离膜和负极极片通过卷绕形成的卷绕式结构。电极组件22也可以是由正极极片、隔离膜和负极极片通过层叠布置形成的层叠式结构。
正极极片可以包括正极集流体和涂覆于正极集流体相对的两侧的正极活性物质层。负极极片可以包括负极集流体和涂覆于负极集流体相对的两侧的负极活性物质层。电极组件22具有正极极耳221和负极极耳222，正极极耳221可以是正极极片上未涂覆正极活性物质层的部分，负极极耳222可以是负极极片上未涂覆负极活性物质层的部分。
端盖23是盖合于壳体21的开口以将电池单体20的内部环境与外部环境隔绝的部件。端盖23盖合于壳体21的开口，端盖23与壳体21共同限定出用于容纳电极组件22、电解液以及其他部件的密封空间。端盖23的形状可以与壳体21的形状适配，比如，壳体21为长方体结构，端盖23为与壳体21相适配的矩形板状结构，再如，壳体21为圆柱体结构，端盖23为与壳体21相适配的圆形板状结构。端盖23的材质也可以是多种，比如，铜、铁、铝、钢、铝合金等，端盖23的材质与壳体21的材质可以相同，也可以不同。
端盖23上可以设置电极端子，电极端子用于与电极组件22电连接，以输出电池单体20的电能。电极端子可以包括正极电极端子231和负极电极端子232，正极电极端子231用于与正极极耳221电连接，负极电极端子232用于与负极极耳222电连接。示例性的，正极电极端子231可以通过一个集流构件与正极极耳221电连接，负极电极端子232可以通过另一个集流构件与负极极耳222电连接。
绝缘件24是将端盖23与电极组件22隔离的部件，通过绝缘件24来实现端盖23与电极组件22的绝缘隔离，以降低正负极短路的风险。绝缘件24为绝缘材质，绝缘件24可以是诸如塑料、橡胶等绝缘材质。
结合图3和图4，图4为图3所示的端盖组件的结构示意图，本申请实施例提供一种电池单体20，电池单体20包括壳体21、电极组件22、端盖23、绝缘件24和导热件25。壳体21具有开口。电极组件22用于容纳于壳体21内。端盖23用于盖合于开口。绝缘件24位于端盖23面向电极组件22的一侧，绝缘件24用于隔离端盖23和电极组件22。导热件25嵌设于绝缘件24内，导热件25被配置为与端盖23贴合。
嵌设于绝缘件24内的导热件25可以是一个，也可以是多个。导热件25的材料可以是多种，比如，金属、陶瓷、石英、大理石、导热胶等。
导热件25具有良好的导热性能，导热件25的导热率大于绝缘件24的导热率，即导热件25的导热能力优于绝缘件24的导热能力，以改善绝缘件24导热能力差而无法将电池单体20内部的热量及时散出的情况。比如，导热件25为铝材质，绝缘件24为橡胶材质，铝材质的导热率明显大于橡胶材质。
“导热件25嵌设于绝缘件24内”是指导热件25至少部分位于绝缘件24内，可以是导热件25局部位于绝缘件24内，也可以是导热件25整体完全位于绝缘件24内。导热件25嵌设于绝缘件24内，使得导热件25更靠近于电极组件22，有利于电池单体20内部散热。
“导热件25被配置为与端盖23贴合”是指导热件25具有与端盖23直接接触的状态，以使导热件25吸收的热量能够更高效地传递给端盖23。导热件25可以是始终都与端盖23保持接触的状态，也可以是在某种场景下导热件25才与端盖23保持接触的状态。比如，在电池单体20正置的情况下(壳体21的开口朝上，端盖23位于壳体21的顶部)，绝缘件24在重力作用下可能与 端盖23存在间隙，使得导热件25与端盖23存在小间隙，导热件25并未与端盖23接触；但在电池单体20倒置的情况下(壳体21的开口朝下，端盖23位于壳体21的底部)，绝缘件24在自身的重力以及电极组件22和电解液的重力的作用下与下移，使得导热件25与端盖23接触。当然，也可以是电池单体20倒置以及电池单体20正置导热件25始终与端盖23保持接触。
在本实施例中，通过在绝缘件24内嵌设导热件25，且导热件25与端盖23贴合，电极组件22产生的热量能够通过导热件25高效地传递给端盖23，导热件25的设置提高了电极组件22与端盖23之间的传热效率，使得电极组件22产生的热量通过导热件25能够更容易地传递给端盖23，有效提高电池单体20的散热性能，增长了电池单体20的使用寿命。
在一些实施例中，请参照图5，图5为图4所示的端盖组件的A处局部放大图，绝缘件24上设有槽口面向端盖23的容纳槽241，导热件25至少部分容纳于容纳槽241内。导热件25包括在端盖23的厚度方向Z上相对布置的第一贴合面251和第二贴合面252，第一贴合面251用于与端盖23贴合，第二贴合面252用于容纳槽241的底面2411贴合。
导热件25至少部分容纳于容纳槽241内，可以是导热件25完全容纳于容纳槽241内，也可以是导热件25部分位于容纳槽241内。若导热件25完全位于容纳槽241内，则导热件25用于与端盖23贴合的第一贴合面251位于容纳槽241内，在这种情况下，端盖23可以局部向容纳槽241内延伸，以与导热件25的第一贴合面251贴合；若导热件25部分位于容纳槽241内，则导热件25用于与端盖23贴合的第一贴合面251位于容纳槽241外。
容纳槽241的槽口面向端盖23，使得容纳槽241具有底面2411和槽侧面2412，槽侧面2412围设于底面2411的边缘，在端盖23的厚度方向Z上，槽口位于槽侧面2412的顶端，底面2411位于槽侧面2412的底端。导热件25容纳于容纳槽241内，槽侧面2412位于导热件25的外周侧。导热件25的外周面与容纳槽241的槽侧面2412可以存在间隙，也可以直接接触并形成配合。导热件25的外周面即为导热件25除了第一贴合面251和第二贴合面252以外的表面。
容纳槽241的形状可以与导热件25的形状相适配，比如，导热件25为矩形块，容纳槽241则可以是与导热件25相适配的矩形槽，再如，导热件25为圆形块，容纳槽241则可以是与导热件25相适配的圆形槽。
第一贴合面251与第二贴合面252均可以是平面，以导热件25为块状件为例，第一贴合面251与第二贴合面252可以是导热件25在端盖23的厚度方向Z上的两个端面。
在本实施例中，导热件25至少部分容纳于绝缘件24的容纳槽241内，容纳槽241对导热件25起到限制作用，实现导热件25嵌设于绝缘件24内。导热件25的第一贴合面251与端盖23贴合，实现导热件25与端盖23贴合。导热件25的第二贴合面252与容纳槽241的底面2411贴合，一方面能够缩小导热件25与电极组件22之间的距离，降低了导热件25与电极组件22的散热距离，电极组件22产生的热量能够更容易传递给导热件25，另一方面能够增大导热件25与绝缘件24的接触面积，提高了绝缘件24与导热件25之间的传热效率，使得绝缘件24上的热量能够快速传递给导热件25，进一步提高了电池单体20的散热性能。
在一些实施例中，请继续参照图5，绝缘件24包括位于容纳槽241的底部的绝缘部242，绝缘部242用于分隔电极组件22(图3中示出)和导热件25。容纳槽241的深度大于绝缘部242的厚度。
绝缘部242是指绝缘件24位于容纳槽241的底部并分隔电极组件22和导热件25的部分。在端盖23的厚度方向Z上，导热件25位于绝缘部242背离电极组件22的一侧，绝缘部242起到分隔电极组件22和导热件25的作用。
容纳槽241的深度即为容纳槽241在端盖23的厚度方向Z上的尺寸，绝缘部242的厚度为绝缘部242在端盖23的厚度方向Z上的尺寸。
在本实施例中，容纳槽241的深度大于将电极组件22和导热件25分隔的绝缘部242的厚度，绝缘部242相对较薄，电极组件22产生的热量更容易通过绝缘部242传递给导热件25，以及时带走电池单体20内部的热量。
在一些实施例中，请继续参照图5，绝缘件24具有用于与端盖23贴合的第三贴合面243，容纳槽241从第三贴合面243向背离端盖23的方向凹陷，第三贴合面243与第一贴合面251平齐。
第三贴合面243与第一贴合面251平齐，即第三贴合面243与第一贴合面251共面。由于容纳槽241从第三贴合面243向背离端盖23的方向凹陷，且导热件25的第一贴合面251与绝缘件24的第三贴合面243平齐，导热件25没有任何部分位于容纳槽241外，属于导热件25完全容纳于容纳槽241内的情况。
在本实施例中，由于绝缘件24的第三贴合面243与导热件25的第一贴合面251平齐，使得第一贴合面251与第三贴合面243能够同时与端盖23贴合，便于导热件25和绝缘件24上的热量传递给端盖23，便于电池单体20内部的热量散出。
此外，由于绝缘件24的第三贴合面243与端盖23贴合，使得绝缘件24与端盖23结构更加紧凑，能够为电极组件22腾出更多空间，有利于提升电池单体20的能量密度。
在一些实施例中，请继续参照图5，绝缘件24上设有限位件244，限位件244用于限制导热件25脱离绝缘件24。
限位件244为限制导热件25脱离绝缘件24的部件，限位件244可以是多种结构，只要能够限制限位导热件25脱离绝缘件24即可。在导热件25至少部分容纳于容纳槽241内的实施例中，限位件244限制导热件25脱离绝缘件24，可理解为限位件244限制导热件25脱离容纳槽241。导热件25可以设置于容纳槽241的底面2411，也可以设置于容纳槽241的槽侧面2412。限位件244与绝缘件24可以是一体成型结构，也可以是分体式结构。
限制导热件25脱离绝缘件24的限位件244可以是一个，也可以是多个。
本实施例中，绝缘件24上的限位件244对导热件25起到限制作用，以限制导热件25脱离绝缘件24，保证导热件25始终与绝缘件24接触，便于绝缘件24上的热量传递给导热件25。此外，在组装电池单体20的过程中，导热件25不会脱离绝缘件24，便于电池单体20的组装。
在其他实施例中，也可以通过其他方式来限制导热件25脱离绝缘件24，比如，导热件25与绝缘件24粘接在一起。
在一些实施例中，请继续参照图5，在绝缘件24上设有槽口面向端盖23的容纳槽241，且导热件25至少部分容纳于容纳槽241内的实施例中，限位件244可以用于限制导热件25与容纳槽241的底面2411分离。
限位件244是限制导热件25与容纳槽241的底面2411分离的部件，在限位件244的限制作用下，导热件25不会在容纳槽241的内上下晃动，保证导热件25在容纳槽241内的稳定性。
限位件244起到限制导热件25脱离容纳槽241的底面2411的作用，从而使导热件25始终保持在与容纳槽241的底面2411接触的状态，以提高绝缘件24与导热件25之间的传热效率，使得绝缘件24上的热量能够快速传递给导热件25。
在一些实施例中，请参照图6，图6为图4所示的端盖组件的局部爆炸图，在端盖23的厚度方向Z上，限位件244的至少一部分与容纳槽241的底面2411之间形成限位间隙245，限位间隙245用于容纳导热件25的一部分，以限制导热件25与容纳槽241的底面2411分离。
在端盖23的厚度方向Z上，限位件244的至少一部分与容纳槽241的底面2411之间形成限位间隙245。可以是限位件244整体与容纳槽241的底面2411之间形成限位间隙245，比如，限位件244为凸设于容纳槽241的槽侧面2412上的环形结构，限位件244整体与容纳槽241的底面2411存在距离，以形成限位间隙245。也可以是限位件244的一部分与容纳槽241与容纳槽241的底面2411之间形成限位间隙245，比如，限位件244凸设于容纳槽241的底面2411，限位件244的一部分与容纳槽241的底面2411存在距离，以形成限位间隙245。
通过导热件25的至少一部分容纳于限位件244与容纳槽241的底面2411之间形成的限位间隙245内，以实现对导热件25在端盖23厚度方向Z上的限位，以达到限制导热件25脱离于容 纳槽241的底面2411的目的，限位结构简单。
在一些实施例中，请继续参照图6，导热件25设有通孔253，通孔253用于容纳限位件244，通孔253的孔壁上形成有限位凸起2531。限位件244包括相互连接的连接部2441和限位部2442，连接部2441连接于容纳槽241的底面2411，限位部2442与容纳槽241底面2411之间形成限位间隙245，限位间隙245用于容纳限位凸起2531。
限位件244与绝缘件24可以是一体成型结构，限位件244与绝缘件24的材质可以相同，比如，限位件244和绝缘件24的材质均为橡胶或塑料等。
限位件244的限位部2442可以是具有一定的弹性变形能力弹性部件，在限位件244穿入导热件25上的通孔253的过程中，限位部2442在限位凸起2531的挤压作用下发生弹性变形，使得限位部2442越过限位凸起2531，从而将限位凸起2531卡于限位部2442与容纳槽241的底面2411之间的限位间隙245内。限位件244的连接部2441可以是圆柱形结构，限位部2442可以是环布于连接部2441的圆周面上的环形结构，限位凸起2531也可以是环布于通孔253的孔壁的环形结构。
容纳槽241的底面2411上的限位件244可以是一个，也可以是多个，导热件25上的通孔253与限位件244相对应。为提高导热件25在容纳槽241内的稳定性，可以将限位件244设置为不共线的多个，多个限位件244共同限制导热件25。示例性的，容纳槽241的底面2411上设置有三个不共线的限位件244。
在本实施例中，导热件25的通孔253的孔壁上的限位凸起2531容纳于限位部2442与容纳槽241的底面2411之间形成的限位间隙245内，绝缘件24与导热件25通过限位件244实现卡扣配合，便于导热件25与绝缘件24的拆卸及安装。
在一些实施例中，请继续参照图6，限位件244凸出于容纳槽241的底面2411，限位件244背离容纳槽241的底面2411的一端形成有第四贴合面2443，第四贴合面2443用于与端盖23贴合。
第四贴合面2443用于与端盖23贴合，使得限位件244与端盖23保持接触。第四贴合面2443可以是限位件244背离容纳槽241的底面2411的一端的端面。
在绝缘件24的第三贴合面243与端盖23贴合的实施例中，由于第四贴合面2443与端盖23贴合，使得第四贴合面2443与第三贴合面243平齐，即第四贴合面2443与第三贴合面243共面，使得限位件244完全位于容纳槽241内。在绝缘件24的第三贴合面243未与端盖23贴合的情况下，由于第四贴合面2443与端盖23贴合，使得限位件244局部位于容纳槽241外。
在本实施例中，限位件244的第四贴合面2443与端盖23贴合，有利于将绝缘件24上的热量传递给端盖23。
在一些实施例中，请参照图7，图7为端盖组件与热管理部件30位置关系图，端盖23用于与热管理部件30附接，热管理部件30用于管理电池单体20的温度。
端盖23用于与热管理部件30附接，可以是端盖23与热管理部件30只是保持接触关系，但两者并未连接固定，也可以是端盖23与热管理部件30固定连接在一起，比如，端盖23与热管理部件30通过导热胶固定连接。
热管理部件30是管理电池单体20的温度的部件，热管理部件30可以给电池单体20加热，也可以给电池单体20冷却。若热管理部件30给电池单体20加热，热管理部件30的热量可通过端盖23传递给导热件25，导热件25释放热量以对电池100内部进行加热；若热管理部件30给电池单体20冷却，电池单体20内部的热量可通过导热件25传递给端盖23，热管理部件30带动端盖23上的热量，以对电池单体20进行冷却。
在本实施例中，端盖23用于热管理部件30附接，电池单体20能够通过端盖23与热管理部件30进行热传递，以便于通过热管理部件30来调节电池单体20的温度。由于绝缘件24内嵌设有导热件25，可有效提高热管理部件30对电池单体20的热管理效率，使得电池单体20处于合理 的使用温度内。
在一些实施例中，请继续参照图7，端盖23具有用于与热管理部件30附接的贴合部2331，导热件25用于与贴合部2331贴合。
贴合部2331为端盖23既与热管理部件30附接又与导热件25贴合的部分，贴合部2331可以是位于端盖23和热管理部件30之间的板状结构。
端盖23可以是多种结构。示例性的，端盖23包括主体部233和凸部234，主体部233用于盖合于壳体21(图7未示出)的开口，凸部234凸出于主体部233的外表面，主体部233的内表面与凸部234相对应的位置形成凹部235，凹部235用于容纳电极组件22(图7未示出)的极耳的至少一部分，以为电极组件22腾出更多的空间，有利于提升电池单体20的能量密度。贴合部2331可以是主体部233在端盖23的长度方向X上位于凸部234的两侧的部分，也就是说，端盖23中的贴合部2331为两个，在端盖23的长度方向X上，两个贴合部2331分别位于凸部234的两侧。当然，嵌设于绝缘件24内的导热件25也可以是两个，一个导热件25对应与一个贴合部2331贴合。
在电池单体20中，电极端子可以安装于端盖23的凸部234，比如，正极电极端子231和负极电极端子232均安装于凸部234，正极电极端子231和负极电极端子232在端盖23的长度方向X上间隔排布。
热管理部件30上可以设置用于避让凸部234的避让孔31。
本实施例中，端盖23的贴合部2331既用于与热管理部件30附接，又用于与贴合部2331贴合，可缩短热管理部件30与导热件25之间的热传递路径，提高了热管理部件30对电池单体20的热影响效率。
在一些实施例中，请继续参照图7，在端盖23的厚度方向Z上，热管理部件30的投影与导热件25的投影至少部分重叠。
在端盖23的贴合部2331与热管理部件30附接且端盖23与导热件25贴合的实施例中，在端盖23的厚度方向Z上，贴合部2331可以位于热管理部件30和导热件25之间。热管理部件30、贴合部2331和导热件25三者在端盖23的厚度方向Z上层叠布置。热管理部件30附接于贴合部2331的外表面，导热件25贴合于贴合部2331的内表面。
在本实施例中，热管理部件30在端盖23的厚度方向Z上的投影与导热件25在端盖23的厚度方向Z上的投影至少部分重叠，能够有效缩短热管理部件30与导热件25之间的热传递路径，提高了热管理部件30对电池单体20的热影响效率。
在一些实施例中，导热件25为金属材质。
导热件25的材质可以是铜、铁、铝、钢、铝合金等材质中的一种或多种。若导热件25的材质为多种，导热件25可以分为连接在一起的多个部分，多个部分可以采用不同的材质。比如导热件25包括连接在一起的两个部分，其中一个部分的材质为铁，另一个部分的材质为铝。示例性的，导热件25为嵌设于绝缘件24内的金属块，比如，铝块。
在本实施例中，导热件25为金属材质，导热件25具有很好的导热能力。
本申请实施例提供一种电池100，包括箱体10和以上任意一个实施例提供的电池单体20，箱体10用于容纳电池单体20。
在一些实施例中，电池100还包括热管理部件30，热管理部件30用于与端盖23附接，热管理部件30用于管理电池单体20的温度。
本申请实施例提供一种用电设备，包括以上任意一个实施例提供的电池100。
用电设备可以是前述任一应用电池100的设备。
参见图3和图4，本申请实施例还提供一种方壳电池100，包括壳体21、电极组件22、端盖23、绝缘件24和导热件25。电极组件22容纳于壳体21内。端盖23包括主体部233和凸部 234，主体部233盖合于壳体21的开口，凸部234凸出于主体部233的外表面，主体部233的内表面与凸部234相对应的位置形成有凹部235，凹部235用于容纳电极组件22的极耳的至少一部分。绝缘件24位于端盖23面向电极组件22的一侧，绝缘件24用于隔离端盖23和电极组件22。导热件25嵌设于绝缘件24内，导热件25与端盖23的主体部233贴合。电极组件22产生的热量能够通过导热件25高效传递给端盖23的主体部233，导热件25的设置提高了电极组件22与端盖23之间的传热效率，使得电极组件22产生的热量通过导热件25能够更容易地传递给端盖23的主体部233，有效提高电池单体20的散热性能，增长了电池单体20的使用寿命。
本申请实施例提供一种电池单体20的制造方法，请参照图8，图8为本申请一些实施例提供的电池单体20的制造方法的流程图，该方法包括：
S100：提供壳体21，壳体21具有开口；
S200：提供电极组件22；
S300：提供端盖23、绝缘件24和导热件25，绝缘件24位于端盖23的一侧，导热件25嵌设于绝缘件24内，导热件25被配置为与端盖23贴合；
S400：将电极组件22容纳于壳体21内；
S500：将端盖23盖合于壳体21的开口，使得绝缘件24位于端盖23面向电极组件22的一侧。
在上述方法中，并不限制步骤S100、步骤S200和步骤S300先后顺序，比如，可以先执行步骤S300，再执行步骤S200，再执行步骤S100。
需要说明的是，通过上述各实施例提供的制造方法制造的电池单体20的相关结构，可参见前述各实施例提供的电池单体20，在此不再赘述。
此外，本申请实施例还提供一种电池单体20的制造设备2000，请参照图9，图9为本申请一些实施例提供的电池单体20的制造设备2000的示意性框图，制造设备2000包括第一提供装置2100、第二提供装置2200、第三提供装置2300和组装装置2400。
其中，第一提供装置2100用于提供壳体21，壳体21具有开口。第二提供装置2200用于提供电极组件22。第三提供装置2300用于提供端盖23、绝缘件24和导热件25，绝缘件24位于端盖23的一侧，导热件25嵌设于绝缘件24内，导热件25被配置为与端盖23贴合。组装装置2400用于将电极组件22容纳于壳体21内；组装装置2400还用于将端盖23盖合于开口，使得绝缘件24位于端盖23面向电极组件22的一侧。
需要说明的是，通过上述实施例提供的制造设备2000制造的电池单体20的相关结构，可参见前述各实施例提供的电池单体20，在此不再赘述。
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
以上实施例仅用以说明本申请的技术方案，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (18)

  1. 一种电池单体，其特征在于，包括：
    壳体，具有开口；
    电极组件，用于容纳于所述壳体内；
    端盖，用于盖合于所述开口；
    绝缘件，位于所述端盖面向所述电极组件的一侧，所述绝缘件用于隔离所述端盖和所述电极组件；以及
    导热件，嵌设于所述绝缘件内，所述导热件被配置为与所述端盖贴合。
  2. 根据权利要求1所述的电池单体，其特征在于，所述绝缘件上设有槽口面向所述端盖的容纳槽，所述导热件至少部分容纳于所述容纳槽内；
    所述导热件包括在所述端盖的厚度方向上相对布置的第一贴合面和第二贴合面，所述第一贴合面用于与所述端盖贴合，所述第二贴合面用于所述容纳槽的底面贴合。
  3. 根据权利要求2所述的电池单体，其特征在于，所述绝缘件包括位于所述容纳槽的底部的绝缘部，所述绝缘部用于分隔所述电极组件和所述导热件；
    所述容纳槽的深度大于所述绝缘部的厚度。
  4. 根据权利要求2或3所述的电池单体，其特征在于，所述绝缘件具有用于与所述端盖贴合的第三贴合面，所述容纳槽从所述第三贴合面向背离所述端盖的方向凹陷，所述第三贴合面与所述第一贴合面平齐。
  5. 根据权利要求1所述的电池单体，其特征在于，所述绝缘件上设有限位件，所述限位件用于限制所述导热件脱离所述绝缘件。
  6. 根据权利要求5所述的电池单体，其特征在于，所述绝缘件上设有槽口面向所述端盖的容纳槽，所述导热件至少部分容纳于所述容纳槽内；
    所述限位件用于限制所述导热件与所述容纳槽的底面分离。
  7. 根据权利要求6所述的电池单体，其特征在于，在所述端盖的厚度方向上，所述限位件的至少一部分与所述底面之间形成限位间隙，所述限位间隙用于容纳所述导热件的一部分，以限制所述导热件与所述底面分离。
  8. 根据权利要求7所述的电池单体，其特征在于，所述导热件设有通孔，所述通孔用于容纳所述限位件，所述通孔的孔壁上形成有限位凸起；
    所述限位件包括相互连接的连接部和限位部，所述连接部连接于所述底面，所述限位部与所述底面之间形成所述限位间隙，所述限位间隙用于容纳所述限位凸起。
  9. 根据权利要求6-8任一项所述的电池单体，其特征在于，限位件凸出于所述底面，所述限位件背离所述底面的一端形成有第四贴合面，所述第四贴合面用于与所述端盖贴合。
  10. 根据权利要求1-9任一项所述的电池单体，其特征在于，所述端盖用于与热管理部件附接，所述热管理部件用于管理所述电池单体的温度。
  11. 根据权利要求10所述的电池单体，其特征在于，所述端盖具有用于与所述热管理部件附接的贴合部，所述导热件用于与所述贴合部贴合。
  12. 根据权利要求10或11所述的电池单体，其特征在于，在所述端盖的厚度方向上，所述热管理部件的投影与所述导热件的投影至少部分重叠。
  13. 根据权利要求1-12任一项所述的电池单体，其特征在于，所述导热件为金属材质。
  14. 一种电池，其特征在于，包括：
    根据权利要求1-13任一项所述的电池单体；以及
    箱体，用于容纳所述电池单体。
  15. 根据权利要求14所述的电池，其特征在于，所述电池还包括热管理部件，所述热管理部件用于与所述端盖附接，所述热管理部件用于管理所述电池单体的温度。
  16. 一种用电设备，其特征在于，包括根据权利要求14或15所述的电池。
  17. 一种电池单体的制造方法，其特征在于，所述方法包括：
    提供壳体，所述壳体具有开口；
    提供电极组件；
    提供端盖、绝缘件和导热件，所述绝缘件位于端盖的一侧，所述导热件嵌设于所述绝缘件内，所述导热件被配置为与所述端盖贴合；
    将所述电极组件容纳于所述壳体内；
    将所述端盖盖合于所述开口，使得所述绝缘件位于所述端盖面向所述电极组件的一侧。
  18. 一种电池单体的制造设备，其特征在于，包括：
    第一提供装置，用于提供壳体，所述壳体具有开口；
    第二提供装置，用于提供电极组件；
    第三提供装置，用于提供端盖、绝缘件和导热件，所述绝缘件位于端盖的一侧，所述导热件嵌设于所述绝缘件内，所述导热件被配置为与所述端盖贴合；
    组装装置，用于将所述电极组件容纳于所述壳体内；所述组装装置还用于将所述端盖盖合于所述开口，使得所述绝缘件位于所述端盖面向所述电极组件的一侧。
PCT/CN2021/112495 2021-08-13 2021-08-13 电池单体、电池、用电设备及电池单体的制造方法和设备 Ceased WO2023015558A1 (zh)

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