WO2023165411A1 - 电池箱体、电池和用电设备 - Google Patents

电池箱体、电池和用电设备 Download PDF

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Publication number
WO2023165411A1
WO2023165411A1 PCT/CN2023/077952 CN2023077952W WO2023165411A1 WO 2023165411 A1 WO2023165411 A1 WO 2023165411A1 CN 2023077952 W CN2023077952 W CN 2023077952W WO 2023165411 A1 WO2023165411 A1 WO 2023165411A1
Authority
WO
WIPO (PCT)
Prior art keywords
flange
bead
battery
upper cover
connection
Prior art date
Application number
PCT/CN2023/077952
Other languages
English (en)
French (fr)
Inventor
苗慧敏
潘鑫
陈智明
Original Assignee
宁德时代新能源科技股份有限公司
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 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to EP23762811.0A priority Critical patent/EP4418427A1/en
Publication of WO2023165411A1 publication Critical patent/WO2023165411A1/zh

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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
    • H01M50/20—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
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted 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
    • H01M50/20—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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • 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
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • 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
    • H01M50/271—Lids or covers for the racks or secondary casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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 batteries, in particular to a battery box, a battery and electrical equipment.
  • the battery usually includes a box body and battery cells accommodated in the box body, and the box body includes an upper cover and a lower box body.
  • the overall assembly efficiency of batteries in the prior art is low and cannot be automated, which affects the output of batteries and is difficult to meet the needs of modern society for batteries.
  • the present application provides a battery box, which can effectively solve the problems in the prior art that the overall assembly efficiency of batteries is low, automation cannot be realized, the output of batteries is affected, and it is difficult to meet the needs of modern society for batteries.
  • the present application provides a battery case, including a top cover; the top cover includes a top cover body and a bead; the peripheral edge of the top cover body is provided with a flange, and the flange has a first surface, the first surface is The flange is away from the surface of the lower case of the battery case; the bead is attached to the first surface of the flange.
  • the upper cover is formed by attaching the bead to the flange of the upper cover body, so that the bead can not only strengthen and prevent deformation of the flange of the upper cover body, but also can
  • the upper cover is integrated with the incoming materials, and the assembly process of the upper cover body and the bead is omitted after entering the factory, which effectively improves the overall assembly efficiency of the battery box and the battery, and facilitates automatic assembly.
  • the bead is arranged on the first surface of the flange away from the lower box in the battery box, so as to ensure that the upper cover and the lower box When the body is assembled, only one layer of gasket needs to be set between the flange and the lower box to ensure the sealing.
  • the first surface of the flange is provided with several connecting parts arranged at intervals, the connecting parts penetrate the bead in a direction away from the first surface, and the connecting part can cover at least part of the surface of the bead facing away from the first surface and Connect bead and flange.
  • the arrangement of the connection part can not only position the bead, but also realize the covering and connection of the bead through the state change of the connection part, which simplifies the operation and effectively improves the assembly efficiency.
  • the connecting portion is a thermal fuse post.
  • the state change of the connection part can be realized by setting the connection part as a heat-melt column.
  • the connection part simply passes through the bead to position it.
  • the heat The riveting device heats the end of the connection part away from the flange to melt it onto the bead, so as to cover and bond the bead.
  • the end of the connecting portion away from the flange protrudes from the surface of the bead facing away from the first surface.
  • the end of the connecting portion away from the flange is set to protrude from the surface of the bead facing away from the first surface, so that it can be guaranteed to be melted on the surface of the bead facing away from the first surface after it is thermally melted, and the surface is partially covered and kept connected
  • the connection of the unmelted part of the inner part can effectively realize the joint connection between the bead and the flange.
  • a plurality of first through holes are arranged at intervals on the flange, and the first through holes penetrate the flange along the thickness direction of the flange;
  • the holes are arranged coaxially, and are used to connect the lower box body with bolts.
  • third through holes are provided corresponding to several connecting parts on the bead, and the third through holes are used to be sleeved on the connecting parts; the distance between the third through holes and the outer edge of the flange is smaller than that of the second through holes. The distance between the hole and the outer edge of the flange.
  • the socket fit between the bead and the connection part is realized, which effectively improves the positioning accuracy and efficiency of the bead at the connection part; and usually, the bolt connection between the flange of the upper cover and the lower box body extends inward
  • the distance between the third through hole and the outer edge of the flange is smaller than the distance between the second through hole and the outer edge of the flange, In order to prevent the failure of the seal of the battery case caused by the third through hole when it is matched with the bolt.
  • the upper cover body and the connecting portion are integrally formed.
  • the upper cover body and the connection part are prepared through an integral molding process, which is convenient in processing, high in efficiency, and low in part cost, and greatly improves the overall assembly efficiency.
  • the bead is snugly connected to the first surface of the flange by friction welding.
  • the friction welding process can also realize the joint connection between the bead and the flange without using an external connection structure, which simplifies the connection process and improves the connection efficiency.
  • the bead is provided with a reinforcing part; the reinforcing part is arranged on any edge extending along the length direction of the bead, the reinforcing part extends along the thickness direction of the bead, and the reinforcing part is transitionally connected with the edge of the bead through a rounded corner.
  • the setting of the reinforcing part can effectively increase the strength of the bead, which is beneficial to prevent the deformation of the flange.
  • the reinforcing part connects the edge of the bead through a rounded transition, which can not only effectively transition and transmit force, but also can cooperate with the upper flange and the upper body of the upper cover body. The transition position of the cover body prevents the wear of the flange or the upper cover body caused by the direct contact between the bead and this position.
  • the present application provides a battery, including the aforementioned battery case.
  • the present application provides an electric device, including the aforementioned battery.
  • FIG. 1 is a schematic structural diagram of electrical equipment provided by some embodiments of the present application.
  • Fig. 2 is a schematic diagram of the explosive structure of the battery provided by some embodiments of the present application.
  • Fig. 3 is a schematic diagram of the exploded structure of a battery cell provided by some embodiments of the present application.
  • Fig. 4 is a schematic structural view of the upper cover in the battery case provided by some embodiments of the present application.
  • Fig. 5 is a schematic diagram of the exploded structure of the upper cover in the battery case provided by some embodiments of the present application.
  • Fig. 6 is a partial structural schematic diagram of the upper cover in the battery case provided by some embodiments of the present application.
  • Fig. 7 is a schematic diagram of the structural cooperation between the upper cover body and the pressure strip of the upper cover in the battery case provided by some embodiments of the present application.
  • Battery case 1 upper cover 2, upper cover body 3, flange 31, connection part 32, first through hole 33, second through hole 34, side wall 35, bead 4, third through hole 41, reinforcement part 42 , the lower box 5, the battery cell 6, the end cover 61, the casing 62, the electrode assembly 63, the electrode terminal 64, the tab 65, the vehicle 1000, the battery 100, the controller 200, and the motor 300.
  • multiple refers to more than two (including two), similarly, “multiple groups” refers to more than two groups (including two), and “multiple pieces” refers to More than two pieces (including two pieces).
  • Power batteries are not only used in energy storage power systems such as hydraulic, thermal, wind and solar power plants, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric vehicles, as well as military equipment and aerospace and other fields . With the continuous expansion of power battery application fields, its market demand is also constantly expanding.
  • a battery usually includes a box and battery cells accommodated in the box, and the box further includes an upper cover and a box.
  • the flange of the upper cover is connected and sealed with the box by bolts to form the accommodation space for the battery cell.
  • the bead with a certain strength is usually fixed by bolts. on the flange.
  • the usual process is that in the process of battery packing and sealing, it is necessary to pre-assemble the upper cover and the pressure strips of the separate incoming materials through bolt connection, and then the battery packing and sealing procedures can be carried out.
  • the cumbersome locking of materials, pre-assembly and bolts greatly reduces the efficiency of the overall battery assembly process, and cannot guarantee the full automation and high-efficiency implementation of the battery assembly process.
  • the upper cover 2 is set as an integrated structure including the upper cover body 3 and the bead 4, and the upper cover body 3 and the bead 4 are pre-connected at the upstream manufacturer to form an integrated structure before incoming materials, so that the integrated upper cover 2 enters After the factory, the connection and sealing with the lower box body 5 can be directly performed, thereby greatly improving the assembly efficiency of the battery box body 1 .
  • the applicant has designed a battery box 1 after in-depth research, which includes the upper Cover 2; the upper cover 2 is an integrated upper cover 2 formed by bonding the bead 4 to the flange 31 of the upper cover body 3 .
  • the upper cover 2 includes the upper cover body 3 and the bead 4; the peripheral edge of the upper cover body 3 is provided with a flange 31, the flange 31 has a first surface, and the first surface is the flange 31 The surface of the lower box 5 facing away from the battery box 1 ; the bead 4 is attached to the first surface of the flange 31 .
  • the bead 4 can not only strengthen the flange 31 of the upper cover body 3 and prevent deformation, but also enable the upper cover 2 to be integrated with incoming materials. After entering the factory, the assembly process of the upper cover body 3 and the bead 4 is omitted, effectively improving The overall assembly efficiency of the battery case 1 and the battery 100 facilitates automatic assembly. Furthermore, the fit connection is different from cumbersome and time-consuming connection methods such as screw connection, lock connection, and snap connection, which is of great help in improving the assembly efficiency between the upper cover body and the bead and simplifying the assembly process.
  • the battery case 1 disclosed in the embodiment of the present application can be used in lithium batteries, but is not limited to. It is possible to use the electrical equipment composed of the battery box 1 disclosed in the present application, and the power supply system formed by the electrical equipment, so that it is beneficial to solve the low assembly efficiency of the upper cover and the bead in the prior art, Affects the overall battery assembly efficiency and cannot be automated.
  • the embodiment of the present application provides an electric device using a battery as a power source.
  • the electric device can be but not limited to construction, military, travel, national defense, power supply and other fields, such as: mobile phone, tablet, notebook computer, electric toy, electric Tools, battery cars, electric cars, ships, spacecraft and more.
  • electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric boat toys, electric airplane toys, etc.
  • spacecraft may include airplanes, rockets, space shuttles, spaceships, etc.
  • a vehicle 1000 as an electric device according to an embodiment of the present application is taken as an example.
  • FIG. 1 is a schematic structural diagram of a vehicle 1000 provided by some embodiments of the present application.
  • the vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle Electric vehicles, hybrid vehicles or extended-range vehicles, etc.
  • the interior of the vehicle 1000 is provided with a battery 100 , and the battery 100 may be provided at the bottom, head or tail of 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 an exploded view of a battery 100 provided by some embodiments of the present application.
  • the battery 100 includes a battery case 1 and a battery cell 6 accommodated in the battery case 1 .
  • the battery case 1 is used to provide accommodating space for the battery cells 6 , and the battery case 1 can adopt various structures.
  • the battery case 1 may include an upper cover 2 and a lower case 5, the upper cover 2 and the lower case 5 are mutually covered, and the upper cover 2 and the lower case 5 jointly define an 6 of accommodation space.
  • the lower box body 5 can be a hollow structure with one end open, and the upper cover 2 can be a plate-shaped structure, and the upper cover 2 covers the opening side of the lower box body 5, so that the upper cover 2 and the lower box body 5 jointly define an accommodation space
  • the loam cake 2 and the lower box body 5 may also be hollow structures with one side opening, and the opening side of the loam cake 2 covers the opening side of the lower box body 5 .
  • the battery case 1 formed by the upper cover 2 and the lower case 5 can be in various shapes, such as a cylinder, a cuboid, and the like.
  • the battery 100 there may be multiple battery cells 6 , and the multiple battery cells 6 may be connected in series, parallel or mixed.
  • the mixed connection means that the multiple battery cells 6 are both connected in series and in parallel.
  • a plurality of battery cells 6 can be directly connected in series, in parallel or mixed together, and then the whole of the plurality of battery cells 6 is accommodated in the battery box 1; of course, the battery 100 can also be a plurality of battery cells 6. First connect in series or in parallel or in combination to form a battery module, and then connect multiple battery modules in series or in parallel or in combination to form a whole, and accommodate them in the battery box 1.
  • the battery 100 may also include other structures, for example, the battery 100 may also include a bus component for realizing the electrical connection between the multiple battery cells 6 .
  • each battery cell 6 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but not limited thereto.
  • the battery cell 6 can be in the form of a cylinder, a flat body, a cuboid or other shapes.
  • FIG. 3 is a schematic diagram of an exploded structure of a battery cell 6 provided by some embodiments of the present application.
  • the battery cell 6 refers to the smallest unit constituting a battery.
  • the battery cell 6 includes an end cover 61, housing 62, electrode assembly 63 and other functional components.
  • the end cap 61 refers to a component that covers the opening of the casing 62 to isolate the internal environment of the battery cell 6 from the external environment.
  • the shape of the end cap 61 can be adapted to the shape of the housing 62 to fit the housing 62 .
  • the end cap 61 can be made of a material (such as aluminum alloy) with a certain hardness and strength, so that the end cap 61 is not easy to deform when being squeezed and collided, so that the battery cell 6 can have a higher Structural strength and safety performance can also be improved.
  • Functional components such as electrode terminals 64 may be provided on the end cap 61 .
  • the electrode terminal 64 can be used for electrical connection with the electrode assembly 63 for outputting or inputting electric energy of the battery cell 6 .
  • the end cover 61 may also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 6 reaches a threshold value.
  • the material of the end cap 61 may also be various, for example, copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not specifically limited in the embodiment of the present application.
  • an insulator can also be provided inside the end cover 61 , and the insulator can be used to isolate the electrical connection components in the housing 62 from the end cover 61 to reduce the risk of short circuit.
  • the insulating member may be plastic, rubber or the like.
  • the casing 62 is a component used to cooperate with the end cap 61 to form the internal environment of the battery cell 6 , wherein the formed internal environment can be used to accommodate the electrode assembly 63 , electrolyte and other components.
  • the housing 62 and the end cover 61 can be independent components, and an opening can be provided on the housing 62 , and the internal environment of the battery cell 6 can be formed by making the end cover 61 cover the opening at the opening.
  • the end cover 61 and the housing 62 can also be integrated. Specifically, the end cover 61 and the housing 62 can form a common connection surface before other components are inserted into the housing. When the inside of the housing 62 needs to be encapsulated , then make the end cover 61 cover the housing 62 .
  • the housing 62 can be in various shapes and sizes, such as cuboid, cylinder, hexagonal prism and so on. Specifically, the shape of the casing 62 can be determined according to the specific shape and size of the electrode assembly 63 .
  • the housing 62 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not particularly limited in this embodiment of the present application.
  • the electrode assembly 63 is a part where the electrochemical reaction occurs in the battery cell 6 , and is also called a cell assembly or a cell.
  • One or more electrode assemblies 63 may be contained within the case 62 .
  • the electrode assembly 63 is mainly formed by winding or stacking positive electrode sheets and negative electrode sheets, and a separator is usually provided between the positive electrode sheets and the negative electrode sheets.
  • the part of the positive electrode sheet and the negative electrode sheet with the active material constitutes the main body of the cell assembly, and usually the parts of the positive electrode sheet and the negative electrode sheet without the active material form the tabs 65 .
  • the positive pole tab and the negative pole tab can be located at one end of the main body together or at two ends of the main body respectively.
  • the present application provides a battery case 1, which includes an upper cover 2; the upper cover 2 includes an upper cover body 3 and a bead 4; an upper cover body 3
  • the circumferential edge of the flange 31 is provided with a flange 31, and the flange 31 has a first surface, and the first surface is the surface of the lower box 5 where the flange 31 is away from the battery box 1; surface.
  • the upper cover body 3 is a rigid structure, and it is mutually covered with the lower box body 5 to define an accommodating space for accommodating the battery cell 6;
  • the lower box body 5 is usually a hollow structure with one end open, and the upper cover body 3 It can be a plate-shaped structure or a hollow structure with one side open, and a flange 31 is provided on the peripheral edge of the upper cover body 3 to cooperate with the flange on the opening side of the lower box body 5 for connection and closure.
  • the upper cover body 3 may be in various shapes, such as but not limited to a cylinder, a cuboid, and the like.
  • the preparation material of the upper cover body 3 is not limited here, it can be but not limited to plastic.
  • the flange 31 is a flat structure, which can provide a fitting surface and a connection position for the connection between the upper cover 2 and the lower box body 5.
  • the flange 31 extends horizontally from the edge of the upper cover body 3 to Form the cover plane and connection end with the lower box body 5, and the flange on the opening side of the lower box body 5 is also arranged in the same way, so as to ensure tight connection without compressing the storage space inside the battery box body 1 .
  • the bead 4 is a rigid structure with a certain strength, and it is snugly connected to the flange 31 to restrict the flange 31 and prevent the flange 31 from deforming.
  • the material of the bead 4 can be but not limited to metal, high-strength plastic, etc., as long as the strength is sufficient to ensure that the flange 31 does not deform.
  • the upper cover 2 is formed by attaching the bead 4 to the flange 31 of the upper cover body 3, so that the bead 4 can not only strengthen and prevent deformation of the flange 31 of the upper cover body 3, but also make the upper
  • the cover 2 is integrated with incoming materials, and the assembly process of the upper cover body 3 and the bead 4 is omitted after entering the factory, which effectively improves the overall assembly efficiency of the battery box 1 and the battery 100, and facilitates automatic assembly.
  • the bead 4 is arranged on the first surface of the flange 31 away from the lower box 5 in the battery box 1, so as to ensure that when the upper cover 2 and the lower box 5 are assembled, there is only one gap between the flange 31 and the lower box 5
  • a layer of sealing gasket (not shown in the figure) needs to be provided to ensure the sealing, avoiding that when the bead 4 is arranged on the surface of the side of the flange 31 facing the lower box body 5, not only the flange 31 and the lower box body 5 need to be sealed.
  • the fitting connection is different from the complicated and time-consuming connection methods such as screw connection, locking connection, snap connection, etc., which is of great help in improving the assembly efficiency between the upper cover body 3 and the bead 4 and simplifying the assembly process.
  • the first surface of the flange 31 is provided with several connecting portions 32 arranged at intervals, and the connecting portions 32 penetrate the bead 4 in a direction away from the first surface, And the connecting portion 32 can cover at least part of the surface of the bead 4 facing away from the first surface and connect the bead 4 and the flange 31 .
  • the connecting part 32 is a structure with a connection or bonding function, which is vertically arranged along the thickness direction of the first surface of the flange 31, and can pass through the bead 4 and cover the bead 4, so that the flange 31 and the bead 4 are covered. Fitted connection of bead 4.
  • the connection part 32 can be but not limited to a column shape, a block shape, etc., as long as it protrudes from the first surface of the flange 31 and can pass through the bead 4 .
  • the connecting parts 32 can not only position the bead 4 in the process of passing through the bead 4, but also ensure the stable fit of the bead 4 and the flange 31
  • the connection can also realize the covering and connection of the bead 4 through the state change of the connecting part 32, which simplifies the operation and effectively improves the assembly efficiency.
  • connection part 32 is a heat-melt column.
  • the hot-melt column is a column that can be used for hot melting. It can soften the column by heating, and deform it into a desired shape by applying a certain force, such as but not limited to the mushroom head, and keep it after cooling. The shape does not change, and it plays a certain role in fixing.
  • connection part 32 is set as a heat-melt column, which passes through the bead 4, and performs a heat-melt operation on the first end away from the first surface to realize the state change of the connection part 32.
  • the melting point of the connecting part 32 needs to be lower than that of the bead 4.
  • the connecting part 32 can be made of PP material, and its melting point is about 160 degrees Celsius.
  • the bead 4 can be made of high-temperature nylon material, and its melting point is about 260 degrees Celsius.
  • the connecting portion 32 When the portion 32 is hot-melted, there is no need to worry about the bead 4 melting; when the bead 4 is not connected, the connecting portion 32 simply passes through the bead 4 to position it, and when the bead 4 needs to be bonded and connected to the flange 31, then The heat riveting device heats the end of the connecting portion 32 away from the flange 31 to melt to the bead 4 to fix and bond the bead 4 .
  • the end of the connecting portion 32 away from the flange 31 protrudes from the surface of the bead 4 away from the first surface.
  • the connecting portion 32 away from the flange 31 By setting the end of the connecting portion 32 away from the flange 31 as protruding from the surface of the bead 4 away from the first surface, it can ensure that it is melted on the surface of the bead 4 away from the first surface after it is thermally melted. Covering and maintaining the connection with the unmelted part of the connecting portion 32 , effectively realizing the bonding connection between the bead 4 and the flange 31 .
  • the height of the connecting portion 32 along the direction away from the flange 31 is not too much
  • the thickness of the bead 4 can be designed and adjusted according to the actual situation, for example: 3-5mm.
  • first through holes 33 are arranged at intervals on the flange 31, and the first through holes 33 penetrate through the flange 31 along the thickness direction of the flange 31;
  • a plurality of second through holes 34 are arranged at intervals, and the second through holes 34 are arranged coaxially with the first through holes 33 for connecting the lower box body 5 with bolts (not shown in the figure).
  • the flange 31 of the upper cover 2 and the flange (not shown) of the lower case 5 are locked by bolts when the upper cover 2 and the lower case 5 are closed and sealed, and then in this embodiment A first through hole 33 and a second through hole 34 are correspondingly provided on the flange 31 and the bead 4 to reserve a connection position in advance for the subsequent covering operation; Gasket (not shown in the figure), to ensure the sealing performance between the flange 31 of the upper cover 2 and the flange (not shown in the figure) of the lower box body 5.
  • the matching communication is realized to ensure the high efficiency when the bolt connection is carried out with the lower box body 5, and avoid repeated punching or secondary punching. Waste of time and labor.
  • the bead 4 is provided with several third through holes 41 corresponding to the plurality of connecting parts 32, and the third through holes 41 are used to be socketed on the connecting parts 32;
  • the distance between the through hole 41 and the outer edge of the flange 31 is smaller than the distance between the second through hole 34 and the outer edge of the flange 31 .
  • the socket fit between the bead 4 and the connecting portion 32 is realized, which effectively improves the positioning accuracy and efficiency of the bead 4 by the connecting portion 32;
  • the bolt connection of the box body 5 extends inwards as an effective sealing area, that is, the area covered by the gasket (not shown in the figure), and in this embodiment, the third through hole 41 and the outer edge of the flange 31
  • the distance is smaller than the distance between the second through hole 34 and the outer edge of the flange 31, so as to prevent the third through hole 41 from causing the sealing failure of the battery case 1 when the bolt is fitted, and even if a leak occurs at the connecting portion 32 Or damage will also not cause the problem of battery case 1 sealing failure.
  • the diameter of the third through hole 41 is set to be slightly larger than the diameter of the connecting portion 32, thereby facilitating the early assembly and positioning of the bead 4; meanwhile, the shape of the third through hole 41 is not too limited here, but can be It is not limited to a circle, a rectangle, a triangle, etc., as long as the socket of the connecting portion 32 can be completed.
  • the upper cover body 3 and the connecting portion 32 are integrally formed.
  • the upper cover body 3 and the connecting portion 32 are integrally formed as an optional Using but not limited to one-piece blister molding, convenient processing, high efficiency, short mold opening cycle, and low mold cost.
  • the blister molding makes the connecting part 32 hollow inside, and the upper cover 2 ensures strength and light weight at the same time. ; Of course, compression molding, injection molding and other processes are all available.
  • the draft angle of the connecting portion 32 is set to 3 degrees, so as to facilitate the demoulding of the upper cover body 3 after molding, that is, refer to the attached In FIG. 7 , the angle between the inner wall of the hollow part of the connecting portion 32 and the vertical direction is set to be understood by those skilled in the art, and there is no excessive limitation here.
  • the upper cover body 3 and the connecting portion 32 are prepared through an integral molding process, which has the advantages of convenient processing, high efficiency, low cost of parts, and greatly improves the overall assembly efficiency.
  • the bead 4 is bonded to the first surface of the flange 31 through friction welding.
  • Friction welding refers to the method of welding by using the heat generated by the friction of the contact surface of the workpiece as the heat source to cause the workpiece to undergo plastic deformation under pressure.
  • the joint connection between the bead 4 and the flange 31 can also be connected by friction welding at the position without the connection part 32 on the premise of having the connection part 32, Thereby, the connection strength between the bead 4 and the flange 31 is improved.
  • reinforcing part 42 on bead 4 be provided with reinforcing part 42 on bead 4;
  • the thickness direction extends, and the reinforcement part 42 is transitionally connected with the edge of the bead 4 through rounded corners.
  • the reinforcing part 42 and the bead 4 are integrally formed of the same material, and the reinforcing part 42 extends along the thickness direction of the bead 4 to enhance the strength of the bead 4 and prevent itself from being deformed in the thickness direction so that the flange 31 cannot be reinforced.
  • the reinforcing part 42 can be arranged continuously along the length direction of the bead 4 , or can be arranged in multiple sections or one section at intervals along the length direction of the bead 4 , for example, 15 mm.
  • the upper cover body 3 is a hollow structure with one side opening, and then the flange 31 needs to be connected to the side wall 35 of the upper cover body 3 extending in the vertical direction through a rounded corner transition
  • the reinforcing part 42 may optionally be extended in a direction away from the flange 31, so that the transition fillet between the reinforcing part 42 and the bead 4 and the transition between the flange 31 and the side wall 35 can be Corresponding to the rounded corners, it can not only effectively transition and transmit force, but also can cooperate with the upper flange 31 of the upper cover body 3 and the side wall 35
  • the transition position of the bead 4 prevents the wear of the flange 31 or the upper cover body 3 caused by the direct conflicting contact between the straight edge of the bead 4 and this position.
  • the present application provides a battery 100 , which includes the aforementioned battery case 1 .
  • the present application provides an electric device, which includes the aforementioned battery 100 .

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Abstract

本申请公开了一种电池箱体、电池及用电设备，涉及电池技术领域。电池箱体包括上盖，上盖包括上盖本体和压条；所述上盖本体的周向边缘设有法兰，所述法兰具有第一表面，所述第一表面为所述法兰背离所述电池箱体的下箱体的表面；所述压条贴合连接于所述法兰的第一表面。通过将压条贴合连接于和上盖本体的法兰上形成上盖，使得压条不仅能够对上盖本体的法兰起到强化和防止变形的作用，还能够使得上盖一体化来料，进厂后省略上盖本体和压条的装配工序，有效提高电池箱体以及电池的整体装配效率，便于实现自动化装配。

Description

电池箱体、电池和用电设备
相关申请的交叉引用
本申请要求享有于2022年03月03日提交的名称为“电池箱体、电池和用电设备”的中国专利申请202220450229.5的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请涉及电池领域，具体涉及一种电池箱体、电池以及用电设备。
背景技术
随着社会的发展进步，动力电池作为新能源迅速进入人们的视野，被广泛应用于各领域。
电池通常包括箱体和容纳于箱体内的电池单体，箱体又包括上盖和下箱体。但是，现有技术中电池整体装配效率低下，无法实现自动化，影响了电池的产量，难以满足现代社会对电池的需求。
发明内容
鉴于上述问题，本申请提供一种电池箱体，能够有效解决现有技术中电池整体装配效率低下，无法实现自动化，影响了电池的产量，难以满足现代社会对电池的需求的问题。
第一方面，本申请提供了一种电池箱体，包括上盖；上盖包括上盖本体和压条；上盖本体的周向边缘设有法兰，法兰具有第一表面，第一表面为法兰背离电池箱体的下箱体的表面；压条贴合连接于法兰的第一表面。
本申请实施例的技术方案中，通过将压条贴合连接于和上盖本体的法兰上形成上盖，使得压条不仅能够对上盖本体的法兰起到强化和防止变形的作用，还能够使得上盖一体化来料，进厂后省略上盖本体和压条的装配工序，有效提高电池箱体以及电池的整体装配效率，便于实现自动化装配。同时将压条设置于法兰背离电池箱体中下箱体的第一表面上，从而保证上盖和下箱 体进行装配时，法兰和下箱体之间仅需设置一层密封垫即可保证密封，避免将压条设置在法兰朝向下箱体一侧表面时，不仅仅需要在法兰和下箱体之间设置密封垫，还需要在法兰和压条之间设置密封垫的问题，从而有效提高效率、简化结构还能够一定程度上保证成本。再者，贴合连接区别于螺接、锁接、卡接等繁琐且耗时连接方式，对于提高上盖本体和压条之间的装配效率并简化装配流程具有极大助益。
在一些实施例中，法兰的第一表面设有若干间隔排布的连接部，连接部沿远离第一表面的方向穿透压条，且连接部能够覆盖至少部分压条背离第一表面的表面并连接压条和法兰。通过连接部的设置不仅能够对压条进行定位，还能够通过连接部的状态变化实现对压条的覆盖以及连接，简化操作的同时有效提高装配效率。
在一些实施例中，连接部为热熔柱。通过将连接部设置为热熔柱则能够实现连接部的状态变化，当未进行连接压条时连接部单纯穿过压条对其进行定位，当需要对压条进行贴合连接于法兰时则通过热铆装置对连接部远离法兰的一端加热使其熔化到压条上，实现对压条的覆盖与贴合粘接。
在一些实施例中，连接部远离法兰的一端突出于压条背离第一表面的表面。将连接部远离法兰的一端设置为突出于压条背离第一表面的表面，从而在其热熔后才能够保证熔化在压条背离第一表面的表面上，对该表面进行部分覆盖并保持与连接部未熔化部分的连接，有效实现压条与法兰的贴合连接。
在一些实施例中，法兰上间隔设有若干第一通孔，第一通孔沿法兰厚度方向贯穿法兰；压条上间隔设有若干第二通孔，第二通孔与第一通孔同轴设置，用于配合螺栓连接下箱体。通过法兰上第一通孔和压条上第二通孔的设置实现配合连通，保证在与下箱体进行螺栓连接时的高效性，避免重复打孔或二次打孔造成时间和劳动力的浪费。
在一些实施例中，压条上对应若干连接部设有若干第三通孔，第三通孔用于套接于连接部；第三通孔与法兰的外边缘之间的距离小于第二通孔与法兰的外边缘之间的距离。通过压条上第三通孔的设置实现压条与连接部的套接配合，有效提高连接部对压条的定位精度与效率；并且通常情况下上盖法兰与下箱体的螺栓连接处向内延伸为有效密封区域，进而本实施例中将第三通孔与法兰的外边缘之间的距离小于第二通孔与法兰的外边缘之间的距离， 以防止第三通孔在与螺栓配合时造成电池箱体密封失效的问题。
在一些实施例中，上盖本体与连接部一体成型。通过一体成型工艺制备上盖本体和连接部，加工方便、效率高、零件成本低，大大提高整体装配效率。
在一些实施例中，压条与法兰的第一表面通过摩擦焊进行贴合连接。通过摩擦焊的工艺也能够实现压条与法兰不借用外部连接结构的贴合连接，简化连接工艺且提高连接效率。
在一些实施例中，压条上设有加强部；加强部设置于沿压条长度方向延伸的任一边缘上，加强部沿压条的厚度方向延伸，且加强部通过圆角与压条的边缘过渡连接。加强部的设置能够有效增大压条的强度，有益于防止法兰变形，同时加强部通过圆角过渡连接压条的边缘，既能够有效过渡且传力，还能够配合上盖本体上法兰与上盖本体的过渡位置，防止压条与该位置的直接抵触式接触造成的法兰或上盖本体的磨损。
第二方面，本申请提供了一种电池，包括前述的电池箱体。
第三方面，本申请提供了一种用电设备，包括前述的电池。
上述说明仅是本申请技术方案的概述，为了能够更清楚了解本申请的技术手段，而可依照说明书的内容予以实施，并且为了让本申请的上述和其它目的、特征和优点能够更明显易懂，以下特举本申请的具体实施方式。
附图说明
通过阅读对下文可选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出可选实施方式的目的，而并不认为是对本申请的限制。而且在全部附图中，用相同的附图标号表示相同的部件。
在附图中：
图1为本申请一些实施例提供的用电设备的结构示意图；
图2为本申请一些实施例提供的电池的爆炸结构示意图；
图3为本申请一些实施例提供的电池单体的爆炸结构示意图；
图4为本申请一些实施例提供的电池箱体中上盖的结构示意图；
图5为本申请一些实施例提供的电池箱体中上盖的爆炸结构示意图；
图6为本申请一些实施例提供的电池箱体中上盖的部分结构示意图；
图7为本申请一些实施例提供的电池箱体中上盖的上盖本体与压条的结构配合示意图。
具体实施方式中的附图标号如下：
电池箱体1、上盖2、上盖本体3、法兰31、连接部32、第一通孔33、第二通孔34、侧壁35、压条4、第三通孔41、加强部42、下箱体5、电池单体6、端盖61、壳体62、电极组件63、电极端子64、极耳65、车辆1000、电池100、控制器200、马达300。
具体实施方式
下面将结合附图对本申请技术方案的实施例进行详细的描述。以下实施例仅用于更加清楚地说明本申请的技术方案，因此只作为示例，而不能以此来限制本申请的保护范围。
除非另有定义，本文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；本文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。
在本申请实施例的描述中，技术术语“第一”“第二”等仅用于区别不同对象，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量、特定顺序或主次关系。在本申请实施例的描述中，“多个”的含义是两个以上，除非另有明确具体的限定。
在本文中提及“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，本文所描述的实施例可以与其它实施例相结合。
在本申请实施例的描述中，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：存在A，同时存在A和B，存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对 象是一种“或”的关系。
在本申请实施例的描述中，术语“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)。
在本申请实施例的描述中，技术术语“中心”“纵向”“横向”“长度”“宽度”“厚度”“上”“下”“前”“后”“左”“右”“竖直”“水平”“顶”“底”“内”“外”“顺时针”“逆时针”“轴向”“径向”“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请实施例和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请实施例的限制。
在本申请实施例的描述中，除非另有明确的规定和限定，技术术语“安装”“相连”“连接”“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；也可以是机械连接，也可以是电连接；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或两个元件的相互作用关系。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实施例中的具体含义。
目前，从市场形势的发展来看，动力电池的应用越加广泛。动力电池不仅被应用于水力、火力、风力和太阳能电站等储能电源系统，而且还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，以及军事装备和航空航天等多个领域。随着动力电池应用领域的不断扩大，其市场的需求量也在不断地扩增。
本申请人注意到，电池通常包括箱体和容纳于箱体内的电池单体，箱体又包括上盖和箱体。上盖的法兰通过螺栓与箱体进行连接密封形成电池单体的容纳空间，同时为了避免法兰发生变形影响上盖与箱体之间的密封，通常会通过螺栓将具有一定强度的压条固定在法兰上。通常的流程是在进行电池装箱密封过程中需要对单独来料的上盖和压条通过螺栓连接进行预先装配，而后才能够进行电池装箱以及密封程序，该过程中上盖与压条的单独来料、预先装配以及螺栓的繁琐锁接大大降低了电池装配整体过程的效率，无法保证电池装配过程的全自动化以及高效率的实施。
为了解决现有技术中电池整体装配效率低下，无法实现自动化，影响了电池的产量，难以满足现代社会对电池的需求的问题，申请人研究发现，可 以将上盖2设置为包括上盖本体3和压条4的一体化结构，将上盖本体3和压条4在上游厂商处预先连接形成一体化结构后再来料，从而一体化的上盖2进厂后可直接进行与下箱体5的连接与密封，从而大大提高电池箱体1的装配效率。
基于以上考虑，为了解决现有技术中的上盖和压条的装配效率低下，影响电池整体装配效率，无法实现自动化的问题，申请人经过深入研究，设计了一种电池箱体1，其包括上盖2；该上盖2为压条4贴合连接于上盖本体3的法兰31上形成的一体化的上盖2。
在这样的电池箱体1中，上盖2包括上盖本体3和压条4；上盖本体3的周向边缘设有法兰31，法兰31具有第一表面，第一表面为法兰31背离电池箱体1的下箱体5的表面；压条4贴合连接于法兰31的第一表面。压条4不仅能够对上盖本体3的法兰31起到强化和防止变形的作用，还能够使得上盖2一体化来料，进厂后省略上盖本体3和压条4的装配工序，有效提高电池箱体1以及电池100的整体装配效率，便于实现自动化装配。再者，贴合连接区别于螺接、锁接、卡接等繁琐且耗时连接方式，对于提高上盖本体和压条之间的装配效率并简化装配流程具有极大助益。
本申请实施例公开的电池箱体1可以但不限用于锂电池中。可以使用具备本申请公开的电池箱体1组成电池等组成的用电设备，以及利用该用电设备组成的电源系统，这样，有利于解决现有技术中的上盖和压条的装配效率低下，影响电池整体装配效率，无法实现自动化的问题。
本申请实施例提供一种使用电池作为电源的用电设备，用电设备可以为但不限于建筑、军事、旅行、国防、电力供应等领域，例如：手机、平板、笔记本电脑、电动玩具、电动工具、电瓶车、电动汽车、轮船、航天器等等。其中，电动玩具可以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，航天器可以包括飞机、火箭、航天飞机和宇宙飞船等等。
以下实施例为了方便说明，以本申请一实施例的一种用电设备为车辆1000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。
在本申请一些实施例中，电池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。
请参照图2，图2为本申请一些实施例提供的电池100的爆炸图。电池100包括电池箱体1和电池单体6，电池单体6容纳于电池箱体1内。其中，电池箱体1用于为电池单体6提供容纳空间，电池箱体1可以采用多种结构。在一些实施例中，电池箱体1可以包括上盖2和下箱体5，上盖2与下箱体5相互盖合，上盖2和下箱体5共同限定出用于容纳电池单体6的容纳空间。下箱体5可以为一端开口的空心结构，上盖2可以为板状结构，上盖2盖合于下箱体5的开口侧，以使上盖2与下箱体5共同限定出容纳空间；上盖2和下箱体5也可以是均为一侧开口的空心结构，上盖2的开口侧盖合于下箱体5的开口侧。当然，上盖2和下箱体5形成的电池箱体1可以是多种形状，比如，圆柱体、长方体等。
在电池100中，电池单体6可以是多个，多个电池单体6之间可串联或并联或混联，混联是指多个电池单体6中既有串联又有并联。多个电池单体6之间可直接串联或并联或混联在一起，再将多个电池单体6构成的整体容纳于电池箱体1内；当然，电池100也可以是多个电池单体6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，并容纳于电池箱体1内。电池100还可以包括其他结构，例如，该电池100还可以包括汇流部件，用于实现多个电池单体6之间的电连接。
其中，每个电池单体6可以为二次电池或一次电池；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。电池单体6可呈圆柱体、扁平体、长方体或其它形状等。
请参照图3，图3为本申请一些实施例提供的电池单体6的爆炸结构示意图。电池单体6是指组成电池的最小单元。如图3，电池单体6包括有端盖 61、壳体62、电极组件63以及其他的功能性部件。
端盖61是指盖合于壳体62的开口处以将电池单体6的内部环境隔绝于外部环境的部件。不限地，端盖61的形状可以与壳体62的形状相适应以配合壳体62。可选地，端盖61可以由具有一定硬度和强度的材质(如铝合金)制成，这样，端盖61在受挤压碰撞时就不易发生形变，使电池单体6能够具备更高的结构强度，安全性能也可以有所提高。端盖61上可以设置有如电极端子64等的功能性部件。电极端子64可以用于与电极组件63电连接，以用于输出或输入电池单体6的电能。在一些实施例中，端盖61上还可以设置有用于在电池单体6的内部压力或温度达到阈值时泄放内部压力的泄压机构。端盖61的材质也可以是多种的，比如，铜、铁、铝、不锈钢、铝合金、塑胶等，本申请实施例对此不作特殊限制。在一些实施例中，在端盖61的内侧还可以设置有绝缘件，绝缘件可以用于隔离壳体62内的电连接部件与端盖61，以降低短路的风险。示例性的，绝缘件可以是塑料、橡胶等。
壳体62是用于配合端盖61以形成电池单体6的内部环境的组件，其中，形成的内部环境可以用于容纳电极组件63、电解液以及其他部件。壳体62和端盖61可以是独立的部件，可以于壳体62上设置开口，通过在开口处使端盖61盖合开口以形成电池单体6的内部环境。不限地，也可以使端盖61和壳体62一体化，具体地，端盖61和壳体62可以在其他部件入壳前先形成一个共同的连接面，当需要封装壳体62的内部时，再使端盖61盖合壳体62。壳体62可以是多种形状和多种尺寸的，例如长方体形、圆柱体形、六棱柱形等。具体地，壳体62的形状可以根据电极组件63的具体形状和尺寸大小来确定。壳体62的材质可以是多种，比如，铜、铁、铝、不锈钢、铝合金、塑胶等，本申请实施例对此不作特殊限制。
电极组件63是电池单体6中发生电化学反应的部件，又称电芯组件或电芯。壳体62内可以包含一个或更多个电极组件63。电极组件63主要由正极片和负极片卷绕或层叠放置形成，并且通常在正极片与负极片之间设有隔膜。正极片和负极片具有活性物质的部分构成电芯组件的主体部，通常正极片和负极片不具有活性物质的部分各自构成极耳65。正极极耳和负极极耳可以共同位于主体部的一端或是分别位于主体部的两端。在电池100的充放电过程中，正极活性物质和负极活性物质与电解液发生反应，极耳65连接电极端子 64以形成电流回路。
根据本申请的一些实施例，参照附图4和附图5，本申请提供了一种电池箱体1，其包括上盖2；上盖2包括上盖本体3和压条4；上盖本体3的周向边缘设有法兰31，法兰31具有第一表面，第一表面为法兰31背离电池箱体1的下箱体5的表面；压条4贴合连接于法兰31的第一表面。
其中，上盖本体3为刚性结构，其与下箱体5相互盖合共同限定出用于容纳电池单体6的容纳空间；下箱体5通常为一端开口的空心结构，则上盖本体3可以为板状结构或一侧开口的空心结构，上盖本体3的周向边缘设有法兰31，以配合下箱体5开口侧的法兰进行连接盖合。当然，上盖本体3可以是多种形状，比如但不限于圆柱体、长方体等。上盖本体3的制备材料在此不做过多限制，可以但不限于塑料。
其中，法兰31为扁平状结构，其能够为上盖2和下箱体5的连接提供贴合面与连接位，同时法兰31由上盖本体3的边缘沿水平方向向外延伸，以形成与下箱体5的盖合平面以及连接端，同样下箱体5开口侧的法兰也为同种设置方式，进而不压缩电池箱体1内部的容纳空间的前提下保证连接紧密。
其中，压条4为具有一定强度的刚性结构，其贴合连接于法兰31能对法兰31形成限制，防止法兰31变形。压条4的材质可以但不限于金属、高强度塑料等，只要强度足够保证法兰31不发生变形即可。
通过将压条4贴合连接于和上盖本体3的法兰31上形成上盖2，使得压条4不仅能够对上盖本体3的法兰31起到强化和防止变形的作用，还能够使得上盖2一体化来料，进厂后省略上盖本体3和压条4的装配工序，有效提高电池箱体1以及电池100的整体装配效率，便于实现自动化装配。同时将压条4设置于法兰31背离电池箱体1中下箱体5的第一表面上，从而保证上盖2和下箱体5进行装配时，法兰31和下箱体5之间仅需设置一层密封垫(图中未示出)即可保证密封，避免将压条4设置在法兰31朝向下箱体5一侧表面时，不仅仅需要在法兰31和下箱体5之间设置密封垫，还需要在法兰31和压条4之间设置密封垫的问题，从而有效提高效率、简化结构还能够一定程度上保证成本。再者，贴合连接区别于螺接、锁接、卡接等繁琐且耗时连接方式，对于提高上盖本体3和压条4之间的装配效率并简化装配流程具有极大助益。
根据本申请的一些实施例，可选地，参照附图6，法兰31的第一表面设有若干间隔排布的连接部32，连接部32沿远离第一表面的方向穿透压条4，且连接部32能够覆盖至少部分压条4背离第一表面的表面并连接压条4和法兰31。
其中，连接部32为具有连接或者粘接功能的结构，其由法兰31的第一表面沿其厚度方向即竖直设置，能够穿过压条4并对压条4进行覆盖，实现法兰31与压条4的贴合连接。连接部32可以但不限于柱状、块状等形式，只要突出于法兰31的第一表面并能够穿过压条4即可。
通过在法兰31的第一表面设有若干间隔排布的连接部32，连接部32在穿过压条4的过程中不仅能够对压条4进行定位，保证压条4与法兰31的稳定贴合连接，还能够通过连接部32的状态变化实现对压条4的覆盖以及连接，简化操作的同时有效提高装配效率。
根据本申请的一些实施例，可选地，连接部32为热熔柱。
其中，热熔柱为能够用来热熔的柱子，其可以通过加热使柱体软化，并通过施加一定的力，使其变形为想要的形状，比如但不限于磨菇头，冷却后保持形状不变，起到一定的固定作用。
本实施例中将连接部32设置为热熔柱，使其穿过压条4，并对远离第一表面的第一端进行热熔操作，实现连接部32的状态变化，当然，可以理解的是：连接部32的熔点需要低于压条4的熔点，例如：连接部32可以选用PP材质，其熔点为160摄氏度左右，压条4可以选用高温尼龙材质，其熔点为260摄氏度左右，则当对连接部32进行热熔时，无需担心压条4会发生熔化；当未进行连接压条4时连接部32单纯穿过压条4对其进行定位，当需要对压条4进行贴合连接于法兰31时则通过热铆装置对连接部32远离法兰31的一端加热使其熔化到压条4上起到固定和粘接压条4的作用。
根据本申请的一些实施例，可选地，参考附图7，连接部32远离法兰31的一端突出于压条4背离第一表面的表面。
通过将连接部32远离法兰31的一端设置为突出于压条4背离第一表面的表面，从而在其热熔后才能够保证熔化在压条4背离第一表面的表面上，对该表面进行部分覆盖并保持与连接部32未熔化部分的连接，有效实现压条4与法兰31的贴合连接。连接部32沿背离法兰31方向的高度在此不做过多 限定，可以根据实际情况配合压条4的厚度进行设计调整，例如：3-5mm。
根据本申请的一些实施例，可选地，参考附图6，法兰31上间隔设有若干第一通孔33，第一通孔33沿法兰31厚度方向贯穿法兰31；压条4上间隔设有若干第二通孔34，第二通孔34与第一通孔33同轴设置，用于配合螺栓(图中未示出)连接下箱体5。
其中，上盖2与下箱体5进行盖合且密封时是通过螺栓锁紧上盖2的法兰31与下箱体5的法兰(图中未示出)的，进而本实施例中在法兰31和压条4上对应设置第一通孔33和第二通孔34以为后续的盖合操作预先留出连接位；当然，法兰31上背离第一表面的表面上还会设有密封垫(图中未示出)，以保证上盖2的法兰31与下箱体5的法兰(图中未示出)之间的密封性能。
通过法兰31上第一通孔33和压条4上第二通孔34的设置实现配合连通，保证在与下箱体5进行螺栓连接时的高效性，避免重复打孔或二次打孔造成时间和劳动力的浪费。
根据本申请的一些实施例，可选地，参考附图6，压条4上对应若干连接部32设有若干第三通孔41，第三通孔41用于套接于连接部32；第三通孔41与法兰31的外边缘之间的距离小于第二通孔34与法兰31的外边缘之间的距离。
通过压条4上第三通孔41的设置实现压条4与连接部32的套接配合，有效提高连接部32对压条4的定位精度与效率；并且通常情况下上盖2的法兰31与下箱体5的螺栓连接处向内延伸为有效密封区域，即密封垫(图中未示出)覆盖的区域，进而本实施例中将第三通孔41与法兰31的外边缘之间的距离小于第二通孔34与法兰31的外边缘之间的距离，以防止第三通孔41在与螺栓配合时造成电池箱体1密封失效的问题，并且即使在连接部32处发生漏洞或损坏也同样不会造成电池箱体1密封失效的问题。且本实施例中将第三通孔41的直径设置为略大于连接部32的直径，进而便于压条4的前期装配定位；同时第三通孔41的形状在此不做过多限定，可以但不限于圆形、矩形、三角形等等，只要能够完成连接部32的套接即可。
根据本申请的一些实施例，可选地，参考附图7，上盖本体3与连接部32一体成型。
当上盖2整体均为塑料材质时，则上盖本体3与连接部32一体成型可选 用但不限于一体吸塑成型，加工方便、效率高且开模周期短、模具成本低，同时参考附图7，吸塑成型使得连接部32内部中空，进行上盖2保证强度的同时质轻；当然，模压成型、注塑成型等工艺均可以。并且，当上盖本体3与连接部32通过吸塑一体成型时，本实施例中设置连接部32的拔模角为3度，以便于上盖本体3在成型后的脱模，即参考附图7中，连接部32内部空心处的内壁与竖直方向的夹角，该设置为本领域技术人员能够理解的，在此不做过多限制。
通过一体成型工艺制备上盖本体3和连接部32，加工方便、效率高、零件成本低，大大提高整体装配效率。
根据本申请的一些实施例，可选地，压条4与法兰31的第一表面通过摩擦焊进行贴合连接。
摩擦焊是指利用工件接触面摩擦产生的热量为热源，使工件在压力作用下产生塑性变形而进行焊接的方法。
本实施例中当压条4和法兰31均为塑料件时，则可以直接选用摩擦焊的方式进行贴合连接，无需任何连接结构即可完成贴合连接，简化连接工艺且提高连接效率。当然，可以理解的是：针对本实施例来说，压条4和法兰31之间的贴合连接还可以在具有连接部32的前提下，在无连接部32的位置增加摩擦焊的连接，从而提高压条4与法兰31的连接强度。
根据本申请的一些实施例，可选地，参考附图7，压条4上设有加强部42；加强部42设置于沿压条4长度方向延伸的任一边缘上，加强部42沿压条4的厚度方向延伸，且加强部42通过圆角与压条4的边缘过渡连接。
加强部42与压条4为同种材质一体成型的，加强部42沿压条4的厚度方向延伸，以增强压条4的强度，防止其本身在其厚度方向上发生变形而无法加固法兰31。加强部42可以沿压条4的长度方向连续设置，也可以沿压条4的长度方向间隔设置多段或一段，例如：15mm。
本实施例中，参考附图6，上盖本体3为一侧开口的空心结构，进而法兰31需要通过一个圆角过渡连接至沿竖直方向延伸的上盖本体3的侧壁35上，则本实施例中，可选地是将加强部42向背离法兰31的方向延伸，从而能够将加强部42和压条4之间的过渡圆角与法兰31和侧壁35之间的过渡圆角相对应上，既能够有效过渡且传力，还能够配合上盖本体3上法兰31与侧壁35 的过渡位置，防止压条4的直边与该位置的直接抵触式接触造成的法兰31或上盖本体3的磨损。
根据本申请的一些实施例，本申请提供了一种电池100，其包括前述的电池箱体1。
根据本申请的一些实施例，本申请提供了一种用电设备，其包括前述的电池100。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围，其均应涵盖在本申请的权利要求和说明书的范围当中。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 (10)

  1. 一种电池箱体，其中，其包括上盖；
    所述上盖包括上盖本体和压条；
    所述上盖本体的周向边缘设有法兰，所述法兰具有第一表面，所述第一表面为所述法兰背离所述电池箱体的下箱体的表面；
    所述压条贴合连接于所述法兰的第一表面；
    所述法兰的第一表面设有若干间隔排布的连接部，所述连接部沿远离所述第一表面的方向穿透所述压条，且所述连接部能够覆盖至少部分所述压条背离所述第一表面的表面并连接所述压条和所述法兰。
  2. 如权利要求1所述的电池箱体，其中：
    所述连接部为热熔柱。
  3. 如权利要求1或2所述的电池箱体，其中：
    所述连接部远离所述法兰的一端突出于所述压条背离所述第一表面的表面。
  4. 如权利要求1至3中的任一项所述的电池箱体，其中：
    所述法兰上间隔设有若干第一通孔，所述第一通孔沿所述法兰厚度方向贯穿所述法兰；
    所述压条上间隔设有若干第二通孔，所述第二通孔与所述第一通孔同轴设置，用于配合螺栓连接所述下箱体。
  5. 如权利要求4所述的电池箱体，其中：
    所述压条上对应所述若干连接部设有若干第三通孔，所述第三通孔用于套接于所述连接部；
    所述第三通孔与所述法兰的外边缘之间的距离小于所述第二通孔与所述法兰的外边缘之间的距离。
  6. 如权利要求1至5中的任一项所述的电池箱体，其中：
    所述上盖本体与所述连接部一体成型。
  7. 如权利要求1至6中的任一项所述的电池箱体，其中：
    所述压条与所述法兰的第一表面通过摩擦焊进行贴合连接。
  8. 如权利要求1至7中的任一项所述的电池箱体，其中：
    所述压条上设有加强部；
    所述加强部设置于沿所述压条长度方向延伸的任一边缘上，所述加强部沿所述压条的厚度方向延伸，且所述加强部通过圆角与所述压条的边缘过渡连接。
  9. 一种电池，其中，其包括：
    权利要求1-8任一所述的电池箱体。
  10. 一种用电设备，其中，其包括：
    权利要求9所述的电池。
PCT/CN2023/077952 2022-03-03 2023-02-23 电池箱体、电池和用电设备 WO2023165411A1 (zh)

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