WO2020134980A1 - 电池箱 - Google Patents

电池箱 Download PDF

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Publication number
WO2020134980A1
WO2020134980A1 PCT/CN2019/123695 CN2019123695W WO2020134980A1 WO 2020134980 A1 WO2020134980 A1 WO 2020134980A1 CN 2019123695 W CN2019123695 W CN 2019123695W WO 2020134980 A1 WO2020134980 A1 WO 2020134980A1
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WO
WIPO (PCT)
Prior art keywords
lower frame
heat exchange
riveting
plate
protective plate
Prior art date
Application number
PCT/CN2019/123695
Other languages
English (en)
French (fr)
Inventor
王衡
季进清
张文辉
钱木
项延火
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
Publication of WO2020134980A1 publication Critical patent/WO2020134980A1/zh

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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
    • H01M10/65—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
    • H01M50/20—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
    • 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
    • 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
    • H01M50/183—Sealing members
    • H01M50/184—Sealing members characterised by their shape or structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • 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
    • H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch 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
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/222—Inorganic material
    • H01M50/224—Metals
    • 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
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/227—Organic material
    • 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
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/231—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks having a layered structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • 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
    • 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
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • 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
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • 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

  • This application relates to the field of batteries, and more particularly to a battery box.
  • the battery box includes a lower frame body, a heat exchange plate, and a protective plate, and the lower frame body and the heat exchange plate form an accommodation space for accommodating the battery module.
  • the battery module includes a plurality of arranged batteries.
  • the battery module is supported on the heat exchange plate.
  • the heat exchange plate supports the battery and performs heat exchange with the battery.
  • the lower frame, the heat exchange plate, and the protective plate are connected together by conventional fasteners such as screws, bolts, or rivets provided along the circumference.
  • these conventional fasteners need to be sealed with a separate sealing means to prevent outside moisture from entering the receiving space through the fasteners. This leads to complicated assembly processes and increased costs.
  • the purpose of the present application is to provide a battery case that can solve the sealing problem at the conventional fastener, thereby simplifying the assembly process and reducing the cost.
  • the present application provides a battery box, which includes: a heat exchange plate; a lower frame body located on the heat exchange plate, and the lower frame body and the heat exchange plate together form an upwardly-opening accommodating space for accommodating batteries,
  • the heat exchange plate is used to support the battery and perform heat exchange with the battery.
  • the lower frame is a hollow structure with a hollow cavity; the protective plate is located below the heat exchange plate to protect the heat exchange plate from below; the self-sealing riveting element will protect
  • the plate, the heat exchange plate and the lower frame are fixed together, the self-sealing riveting element passes through the protective plate and the heat exchange plate in the up and down direction, and the self-sealing riveting element is inserted into the lower frame and at least partially exposed to the lower frame, self-sealing riveting
  • the element is sealed at a first position through the protective plate, and the self-sealing riveting element is sealed at a second position inserted into the lower frame.
  • the lower frame has a bottom wall and a top wall
  • the self-sealing riveting element is a riveting element and includes a riveting nut and a riveting bolt.
  • the riveting nut has an internally threaded barrel and a convex portion.
  • the end of the threaded cylinder protrudes radially outwards around the internally threaded cylinder;
  • the riveting bolt includes an externally threaded column and a cover portion, and the cover portion protrudes radially outward from the end of the externally threaded cylinder around the externally threaded column;
  • internal The threaded cylinder passes through the bottom wall of the protective plate, heat exchange plate, and lower frame and exposes part of the outer side of the protective plate, heat exchange plate, and bottom wall of the lower frame in the vertical direction;
  • the other outer side of the bottom wall of the bottom wall of the plate, the heat exchange plate, and the lower frame body penetrates and is screwed with the internally threaded cylinder;
  • the convex portion of the rivet nut abuts against the bottom wall of the lower frame body in the vertical direction Close to the side of the cover part of the riveting bolt;
  • the exposed portion of the internally threaded cylindrical body of the riveting nut is set to form a protrusion by riveting;
  • the externally threaded column of the riveting bolt passes through the shield plate at a first position from below the shield plate in the up and down direction, passes through the heat exchange plate, and is inserted into the bottom wall of the lower frame at the second position and is exposed In the hollow cavity of the lower frame; the exposed portion of the internally threaded cylindrical body of the rivet nut is located in the hollow cavity of the lower frame; the convex portion of the rivet nut is located below the bottom wall of the lower frame in the up-down direction.
  • the externally threaded column of the riveting bolt is inserted into the top wall of the lower frame from above the lower frame in the second direction, through the bottom wall of the lower frame, through the heat exchange plate in the first position A position passes through the protective plate and is exposed under the protective plate; the exposed portion of the internally threaded barrel of the rivet nut is located under the protective plate.
  • the shield plate is provided with a first recess, and the exposed portion of the internally threaded cylindrical body of the rivet nut is located in the first recess.
  • the convex portion of the rivet nut is located on the lower side of the bottom wall of the lower frame in the up-down direction; the convex portion is directly clamped by the bottom wall of the lower frame and the protective plate.
  • the convex portion is directly clamped by the heat exchange plate and the protection plate.
  • the protective plate is provided with a second concave portion, and the convex portion is received in the second concave portion.
  • the lower frame body has a bottom wall and a top wall
  • the self-sealing riveting element is a riveting element and includes a riveting nut and a riveting bolt.
  • the riveting nut has a cap body and is disposed axially inward of the cap body Nut embossing teeth, nut guide grooves and internally threaded cylindrical parts
  • the rivet bolt has a cap portion, a bolt embossing tooth provided on the axially inner side of the cap portion, a bolt guide groove, and an externally threaded rod portion;
  • the cap body of the pressure riveting nut is located on the opposite sides of the protective plate, the heat exchange plate and the top wall of the lower frame in the up and down directions.
  • the internal thread barrel of the pressure riveting nut and the external threaded rod part of the pressure riveting bolt pass through After the three of the protective plate, the heat exchange plate and the lower frame are joined together, the bolt embossing teeth of the rivet bolt deform the corresponding part of the through, and are sealed and locked with the bolt guide groove of the rivet bolt and the nut press of the rivet nut The corrugated teeth deform the corresponding part to seal and lock with the nut guide groove of the rivet nut.
  • the first position is located at the protective plate, and the second position is located at the top wall of the lower frame.
  • the rivet bolts pass through the shield plate, the heat exchange plate, and the bottom wall of the lower frame in the first position from below the shield plate in the up and down direction to seal at least the part that passes through the shield plate and press riveted
  • the nut is inserted into the top and bottom walls of the lower frame at the second position in the up and down direction, and the part inserted into the top wall is sealed; or the rivet bolt is inserted into the top wall of the lower frame at the second position in the up and down direction And the bottom wall, and seal the part inserted into the top wall; the rivet nut passes through the bottom wall of the protective plate, the heat exchange plate, and the lower frame in the first position from below the protective plate in the up and down direction to at least pass through the protective Part of the board is sealed.
  • the self-sealing riveting element can directly seal at the first position passing through the protective plate and the second position inserted into the lower frame, while conventional screws or rivets cannot achieve direct sealing of the insertion/passing part Requires additional sealing means to seal the insertion/through position, thereby simplifying the assembly process and reducing costs.
  • FIG. 1 is an exploded perspective view of a battery box according to the present application, in which a battery module is shown for clarity.
  • FIG. 2 is a top assembled perspective view of the battery box according to the present application.
  • FIG. 3 is a bottom assembled perspective view of the battery box according to the present application.
  • FIG. 4 is a bottom view of FIG. 2.
  • Figure 5 is an exploded sectional view of one form of self-sealing riveting element.
  • 6A is a cross-sectional view taken along line A-A of FIG. 4 and turned 180 degrees, in which the riveting element is not riveted.
  • 6B is a cross-sectional view corresponding to 6A, in which the riveting element has been riveted.
  • FIG. 7A is a cross-sectional view corresponding to FIG. 6A, in which the riveting element is reversed by 180 degrees and the riveting operation is not performed.
  • 7B is a cross-sectional view corresponding to 7A, in which the riveting element has been riveted.
  • 8A is a sectional view taken along line B-B of FIG. 4 and turned 180 degrees, in which the riveting element is not riveted.
  • 8B is a cross-sectional view corresponding to 8A, in which the riveting element has been riveted.
  • Fig. 9A is a cross-sectional view corresponding to Fig. 8A, in which the riveting element is inverted by 180 degrees and the riveting operation is not performed.
  • 9B is a cross-sectional view corresponding to 9A, in which the riveting element has been riveted.
  • 10A is a cross-sectional view taken along line C-C of FIG. 4 and turned 180 degrees, in which the inner beam only shows the bottom wall and the riveting element is not riveted.
  • 10B is a cross-sectional view corresponding to 10A, in which the riveting element has been riveted.
  • FIG. 11 is an exploded view of another form of self-sealing riveting element.
  • 12A is a cross-sectional view of another form of assembly of the self-sealing riveting element of the battery box with the heat exchange plate, the inner beam, and the protective plate, in which the riveting element is not subjected to the riveting operation.
  • 12B is a cross-sectional view corresponding to 12A, in which the riveting element is turned 180 degrees and the riveting operation is not performed.
  • FIG. 1 is an exploded perspective view of a battery box according to the present application, in which a battery module is shown for clarity.
  • 2 is a top assembled perspective view of the battery box according to the present application.
  • 3 is a bottom assembled perspective view of the battery box according to the present application.
  • 4 is a bottom view of FIG. 2.
  • the battery box according to the present application includes a heat exchange plate 1, a lower frame 2, a protective plate 3, and a self-sealing riveting element 4.
  • the battery box further includes a thermal insulation pad 6 which is disposed between the heat exchange plate 1 and the protective plate 3. By the arrangement of the heat insulation pad 6, at least the heat transfer in the downward direction of the heat exchange plate 1 is blocked, and then the battery 51 of the battery module 5 is kept warm.
  • the material of the heat insulation pad 6 may be heat insulation cotton or foam.
  • the battery 51 may generally include a case, an electrode assembly and an electrolyte housed in the case.
  • the electrode assembly includes a positive electrode sheet, a negative electrode sheet, and a separator.
  • the battery 51 may be a can type (or hard case) battery, as shown in FIG. 1, accordingly, the case includes a top cover and a case assembled with the top cover; or the battery 51 may be a pouch type (or soft pack) battery, case
  • the body is made of an encapsulating film (such as an
  • the heat exchange plate 1 is used to support the battery 51 and exchange heat with the battery 51.
  • the heat exchange plate 1 includes a flow path portion 11 and a peripheral edge portion 12, the flow path portion 11 is provided with a flow path F for the heat exchange medium to flow, the peripheral edge portion 12 is located outside the flow path portion 11 and surrounds the flow path portion 11, and the peripheral edge portion 12 is located Below the framing beam 2A, the flow channel portion 11 and the framing beam 2A together form an upwardly accommodating space.
  • the flow channel portion 11 is used to support the battery 51 and perform heat exchange with the battery 51.
  • the heat exchange plate 1 includes a first plate 13 and a second plate 14; the second plate 14 is combined with the first plate 13 from below and forms a flow path F through which the heat exchange medium flows.
  • the first plate 13 and/or the second plate 14 may be stamped and formed.
  • the heat exchange plate 1 is a material with high thermal conductivity, preferably a metal material, and more preferably an aluminum alloy material.
  • the lower frame 2 is located on the heat exchange plate 1.
  • the lower frame 2 and the heat exchange plate 1 form an upwardly accommodating space for accommodating the battery 51.
  • the lower frame 2 has a hollow structure with a hollow cavity S.
  • the lower frame 2 includes a frame beam 2A, which is circumferentially closed and open in the vertical direction Z.
  • the lower frame 2 further includes an internal beam 2B, which is located in the accommodating space and fixed to the frame beam 2A.
  • Both the frame beam 2A and the inner beam 2B can be made of metal, such as aluminum alloy, and can be die-cast or extruded.
  • the frame beam 2A and the inner beam 2B may have a cavity (that is, the frame beam 2A and the inner beam 2B each have a hollow cavity S described later), that is, they are profiles with a cavity.
  • the longitudinal direction of the frame beam 2A and the internal beam 2B can be X direction and the lateral direction can be Y direction, or the longitudinal direction can be Y direction and the lateral direction can be X direction, but in this article, the lateral and longitudinal directions are the beam structure itself
  • the direction of, that is, the local coordinate system, and the XYZ direction of the battery box in FIG. 1 are the overall coordinate system, and there is no strict correspondence between the two coordinate systems.
  • the frame beam 2A and the inner beam 2B each have a bottom wall 21 and a top wall 22.
  • the protection plate 3 is located below the heat exchange plate 1 and protects the heat exchange plate 1 from below.
  • the shield plate 3 includes a main body portion 31 and an outer peripheral portion 32 surrounding the main body portion 31.
  • the main body portion 31 covers the flow path portion 11 of the heat exchange plate 1 from below, and the outer peripheral portion 32 is located below the peripheral edge portion 12 of the heat exchange plate 1.
  • the self-sealing riveting element 4 fixes the protective plate 3, the heat exchange plate 1 and the lower frame 2 together, the self-sealing riveting element 4 passes through the protective plate 3 and the heat exchange plate 1 in the up-down direction Z, and the self-sealing riveting element 4 is inserted
  • the lower frame 2 is at least partially exposed to the lower frame 2, the self-sealing riveting element 4 is sealed at a first position P1 passing through the protective plate 3, and the self-sealing riveting element 4 is performed at a second position P2 inserted into the lower frame 2 seal.
  • the advantage of the self-sealing riveting element 4 is that it can directly seal at the first position P1 through the protective plate 3 and the second position P2 inserted into the lower frame 2, while conventional screws or rivets cannot directly Sealing requires additional sealing means to seal the inserted/passed part. Thus, simplifying the assembly process and reducing costs.
  • the self-sealing riveting element 4 can take various forms.
  • Figure 5 is an exploded sectional view of one form of self-sealing riveting element.
  • the self-sealing riveting element 4 shown in FIG. 5 is a riveting element.
  • the self-sealing riveting element 4 includes a riveting nut 41 and a riveting bolt 42.
  • the rivet nut 41 has an internally threaded cylindrical body 411 and a convex portion 412 that protrudes radially outward from the end of the internally threaded cylindrical body 411 around the internally threaded cylindrical body 411.
  • the rivet bolt 42 includes an externally threaded post 421 and a cover portion 422, and the cover portion 422 protrudes radially outward from the end of the externally threaded post 421 around the externally threaded post 421.
  • 6A is a cross-sectional view taken along line A-A of FIG. 3 and turned 180 degrees, in which the riveting element is not riveted.
  • 6B is a cross-sectional view corresponding to 5A, in which the riveting element has been riveted.
  • FIG. 7A is a cross-sectional view corresponding to FIG. 6A, in which the riveting element is turned 180 degrees and the riveting operation is not performed.
  • 7B is a cross-sectional view corresponding to 7A, in which the riveting element has been riveted.
  • 8A is a cross-sectional view taken along line B-B of FIG. 3 and turned 180 degrees, wherein the riveting element is not riveted.
  • FIG. 8B is a cross-sectional view corresponding to 8A, in which the riveting element has been riveted.
  • FIG. 9A is a cross-sectional view corresponding to FIG. 8A, in which the riveting element is reversed 180 degrees and the riveting operation is not performed.
  • 9B is a cross-sectional view corresponding to 9A, in which the riveting element has been riveted.
  • 10A is a cross-sectional view taken along line C-C of FIG. 3 and turned 180 degrees, in which the inner beam only shows the bottom wall and the riveting element is not riveted.
  • 10B is a cross-sectional view corresponding to 10A, in which the riveting element has been riveted.
  • the internally threaded cylindrical body 411 passes through the protective plate 3, the heat exchange plate 1, the bottom wall 21 of the lower frame 2, and partially exposes the protective plate 3, the heat exchange plate 1,
  • the externally threaded column 421 is opposite to the other outer side of the bottom wall 21 of the lower frame 2 opposite to the up-down direction Z in the vertical direction Z Penetrate and thread-engage with the internally threaded cylindrical body 411;
  • the convex portion 412 of the rivet nut 41 abuts on the side of the bottom wall 21 of the lower frame 2 near the cover portion 422 of the rivet bolt 42 in the up-down direction Z;
  • the exposed portion of the internally threaded cylindrical body 411 of the nut 41 is provided to form a protrusion 411a by riveting;
  • the projection 411a of the internally threaded cylindrical body 411 of the rivet nut 41 and the cover portion 422 of the rivet bolt 42 are removed from the guard plate
  • the heat exchange plate 1 and the bottom wall 21 of the lower frame 2 are sealed on opposite sides in the vertical direction Z.
  • the first position P1 is located at the shield plate 3, and the second position P2 is located at a corresponding one of the bottom wall 21 and the top wall 22 of the lower frame 2 adjacent to the convex portion 412 above.
  • the riveting bolt 42 can be inserted from below the protective plate 3 or from above the lower frame 2 in the up-down direction Z, and the riveting nut 41 is along the up-down direction Z and the riveting bolt 42 relatively.
  • the externally threaded column 421 of the rivet bolt 42 passes through the protective plate 3 at a first position P1 from below the protective plate 3 in the up-down direction Z ,
  • the heat exchange plate 1 inserted into the bottom wall 21 of the lower frame 2 at the second position P2, and exposed in the hollow cavity S of the lower frame 2;
  • the exposed threaded cylindrical body 411 of the rivet nut 41 is exposed Partly located in the hollow cavity S of the lower frame 2;
  • the convex portion 412 of the rivet nut 41 is located below the bottom wall 21 of the lower frame 2 in the up-down direction Z.
  • the length of the riveting bolt 42 can be made much shorter than in the case of FIGS. 7A, 7B, 9A, and 9B described later, thereby making it possible to miniaturize the riveting element.
  • the convex portion 412 of the rivet nut 41 is located below the bottom wall 21 of the lower frame 2 in the up-down direction Z; the convex portion 412 is The bottom wall 21 of the lower frame 2 and the protective plate 3 are directly clamped.
  • the convex portion 412 is directly sandwiched by the heat exchange plate 1 and the shield plate 3.
  • FIGS. 10A and 10B the convex portion 412 is directly sandwiched by the heat exchange plate 1 and the shield plate 3.
  • the protective plate 3 is provided with a second concave portion R2, and the convex portion 412 is accommodated in the second concave portion R2, so that the convex portion 412 is accommodated without increasing the thickness of the protective plate 3, Then meet the requirements of lightweight.
  • the externally threaded column 421 of the riveting bolt 42 is inserted into the top wall 22 of the lower frame 2 from above the lower frame 2 in the up-down direction Z, and passes through the lower frame
  • the bottom wall 21 of 2 passes through the heat exchange plate 1, passes through the protective plate 3 at the first position P1, and is exposed under the protective plate 3; the exposed portion of the internally threaded cylindrical body 411 of the rivet nut 41 is located at Below the protective plate 3.
  • the shield plate 3 is provided with a first recess R1, and the exposed portion of the internally threaded barrel 411 of the rivet nut 41 is located in the first recess R1, This saves space and prevents the exposed part from hitting the human body when being transported.
  • the self-sealing riveting element 4 further includes a washer 43, which is sleeved on the externally threaded column 421, clamped between the cover portion 422 of the riveting bolt 42 and the top wall 22 of the lower frame 2 or the protective plate 3.
  • the washer 43 helps to enhance the compressive strength of the corresponding part during riveting and assists in enhancing the sealing of the corresponding part, especially when the washer 43 is clamped between the cover 422 of the riveting bolt 42 and the protective plate 3 ( Since the total thickness of the protective plate 3 and the heat exchange plate 1 in the vertical direction Z is much smaller than the total thickness of the lower frame 2 in the vertical direction Z).
  • FIG. 11 is an exploded view of another form of self-sealing riveting element.
  • the self-sealing riveting element 4 shown in FIG. 11 is a pressure riveting element.
  • the self-sealing riveting element 4 includes a riveting nut 44 and a riveting bolt 45.
  • the rivet nut 44 has a cap body 441, a nut embossing tooth 442 provided on the axially inner side of the cap body 441, a nut guide groove 443, and a female screw cylinder 444.
  • the caulking bolt 45 has a cap portion 451, a bolt embossing tooth 452 provided on the axially inner side of the cap portion 451, a bolt guide groove 453, and a male threaded rod portion 454.
  • Fig. 12A is a cross-sectional view of another form of assembling the self-sealing riveting element of the battery box with the heat exchange plate, the inner beam, and the protective plate, in which the riveting element is not subjected to the riveting operation.
  • 12B is a cross-sectional view corresponding to 12A, in which the riveting element is turned 180 degrees and the riveting operation is not performed.
  • the cap portion 451 of the rivet bolt 45 and the cap body 441 of the rivet nut 44 are respectively located on opposite sides of the top plate 22 of the shield plate 3, the heat exchange plate 1 and the lower frame 2 in the up-down direction Z, and are riveted
  • the internally threaded cylindrical portion 444 of the nut 44 and the externally threaded rod portion 454 of the pressure riveting bolt 45 pass through the protective plate 3, the heat exchange plate 1 and the lower frame 2 and are joined.
  • the bolt embossing teeth 452 of the pressure riveting bolt 45 make The portion passing through is deformed to be hermetically locked with the bolt guide groove 453 of the rivet bolt 45 and the nut embossing teeth 442 of the pressure rivet nut 44 deforms the portion passing through to deform with the nut guide groove 443 of the pressure rivet nut 44 Sealed and locked, the first position P1 is located at the protective plate 3 and the second position P2 is located at the top wall 22 of the lower frame 2.
  • the riveting bolt 45 can be inserted from below the protective plate 3 or from above the lower frame 2 in the up-down direction Z, and the riveting nut 44 along the up-down direction The rivet bolt 45 is opposed.
  • the rivet bolt 45 passes through the protection plate 3 at the first position P1 from below the protection plate 3 in the up-down direction Z, through the heat exchange plate 1 and the bottom wall 21 of the lower frame 2 to at least The part passing through the protective plate 3 is sealed; the rivet nut 44 is inserted downward in the up-down direction Z at the second position P2 into the top wall 22 and the bottom wall 21 of the lower frame 2, and the portion where the top wall 22 is inserted is sealed.
  • the riveting bolt 45 is inserted into the top wall 22 and the bottom wall 21 of the lower frame 2 at the second position P2 in the up-down direction Z, and the portion inserted into the top wall 22 is sealed, and the riveting nut 44 is along the The vertical direction Z passes through the protective plate 3, the heat exchange plate 1, and the bottom wall 21 of the lower frame 2 from below the protective plate 3 at the first position P1 to seal at least a portion that passes through the protective plate 3.
  • the self-sealing riveting element 4 further includes a washer 43, and the washer 43 is sleeved on the outside
  • the threaded rod portion 454 is sandwiched between the cap portion 451 of the rivet bolt 45 and the shield plate 3 or between the cap body 441 of the rivet nut 44 and the shield plate 3.
  • the washer 43 helps to enhance the compressive strength of the protective plate 3 during the riveting process and assists in enhancing the sealing performance of the protective plate 3.

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Abstract

一种电池箱，其包括：换热板（1）；下框体（2），位于换热板（1）上，下框体（2）与换热板（1）一起形成向上开口的收容电池（51）的容置空间，换热板（1）用于支撑电池（51）并与电池（51）进行热交换，下框体（2）为具有中空腔（S）的中空结构；防护板（3），位于换热板（1）下方，从下方对换热板（1）进行防护；自密封铆接元件（4），将防护板（3）、换热板（1）以及下框体（2）固定在一起，自密封铆接元件（4）沿上下方向（Z）穿过防护板（3）和换热板（1），且自密封铆接元件（4）***下框体（2）并至少部分露出于下框体（2），自密封铆接元件（4）在穿过防护板（3）的第一位置（P1）进行密封，自密封铆接元件（4）在***下框体（2）的第二位置（P2）进行密封。自密封铆接元件（4）能在穿过防护板（3）的第一位置（P1）和***下框体（2）的第二位置（P2）直接进行密封，解决了常规紧固件处的密封问题，简化组装过程并降低成本。

Description

电池箱 技术领域
本申请涉及电池领域，更具体地涉及一种电池箱。
背景技术
在电池领域中，电池箱包括下框体、换热板以及防护板，下框体和换热板形成收容电池模组的收容空间。电池模组包括多个排列的电池，电池模组支撑在换热板上，换热板支撑电池并与电池进行热交换。下框体、换热板、防护板通过沿周圈设置的螺钉、螺栓或铆钉之类的常规的紧固件连接在一起。但是，这些常规的紧固件处需要采用单独的密封手段进行密封，以避免外界水汽通过紧固件进入收容空间中。这导致组装过程复杂、成本增加。
发明内容
鉴于背景技术中存在的问题，本申请的目的在于提供一种电池箱，其能解决常规紧固件处的密封问题，从而简化组装过程并降低成本。
为了实现上述目的，本申请提供了一种电池箱，其包括：换热板；下框体，位于换热板上，下框体与换热板一起形成向上开口的收容电池的容置空间，换热板用于支撑电池并与电池进行热交换，下框体为具有中空腔的中空结构；防护板，位于换热板下方，从下方对换热板进行防护；自密封铆接元件，将防护板、换热板以及下框体固定在一起，自密封铆接元件沿上下方向穿过防护板和换热板，且自密封铆接元件***下框体并至少部分露出于下框体，自密封铆接元件在穿过防护板的第一位置进行密封，自密封铆接元件在***下框体的第二位置进行密封。
在一实施例中，下框体具有底壁和顶壁，自密封铆接元件为拉铆元件且包括拉铆螺母和拉铆螺栓，拉铆螺母具有内螺纹筒体以及凸部，凸部从内螺纹筒体的端部环绕内螺纹筒体沿径向向外突出；拉铆螺栓包括外螺纹柱和盖部，盖部从外螺纹柱的端部环绕外螺纹柱沿径向向外突出；内螺纹筒体穿过 防护板、换热板、下框体的底壁并使部分露出在防护板、换热板、下框体的底壁三者的上下方向的一外侧；外螺纹柱从防护板、换热板、下框体的底壁的上下方向的相反的另一外侧穿入并与内螺纹筒体螺纹接合；拉铆螺母的凸部沿上下方向抵靠在下框体的底壁的靠近拉铆螺栓的盖部的一侧；拉铆螺母的内螺纹筒体的所述露出的部分设置成通过拉铆形成突部；拉铆螺母的内螺纹筒体的突部和拉铆螺栓的盖部从防护板、换热板、下框体的底壁三者的上下方向的相反的两侧进行密封，第一位置位于防护板处，第二位置位于下框体的底壁和顶壁中的在上方与凸部相邻的对应一个处。
在一实施例中，拉铆螺栓的外螺纹柱沿上下方向从防护板的下方在第一位置穿过防护板、穿过换热板、在第二位置***下框体的底壁、并露出在下框体的中空腔中；拉铆螺母的内螺纹筒体的所述露出的部分位于下框体的中空腔；拉铆螺母的凸部沿上下方向位于下框体的底壁的下侧。
在一实施例中，拉铆螺栓的外螺纹柱沿上下方向从下框体的上方在第二位置***下框体的顶壁、穿过下框体的底壁、穿过换热板在第一位置穿过防护板、并露出在防护板的下方；拉铆螺母的内螺纹筒体的所述露出的部分位于防护板的下方。
在一实施例中，防护板设有第一凹部，拉铆螺母的内螺纹筒体的所述露出的部分位于第一凹部。
在一实施例中，拉铆螺母的凸部沿上下方向位于下框体的底壁的下侧；凸部被下框体的底壁和防护板直接夹持。
在一实施例中，凸部被换热板和防护板直接夹持。
在一实施例中，防护板设有第二凹部，凸部收容于第二凹部中。
在一实施例中，下框体具有底壁和顶壁，自密封铆接元件为压铆元件且包括压铆螺母和压铆螺栓，压铆螺母具有帽体、设置在帽体的轴向内侧的螺母压花齿、螺母导向槽以及内螺纹筒部，压铆螺栓具有帽部、设置在帽部的轴向内侧的螺栓压花齿、螺栓导向槽以及外螺纹杆部；压铆螺栓的帽部和压铆螺母的帽***于防护板、换热板和下框体的顶壁三者的上下方向的相反的两侧，压铆螺母的内螺纹筒部与压铆螺栓的外螺纹杆部穿过防护板、换热板和下框体三者并接合，压铆螺栓的螺栓压花齿使其对应穿过的部分变形而与压铆螺栓的螺栓导向槽密封锁定且压铆螺母的螺母压花齿使其对应穿过的 部分变形而与压铆螺母的螺母导向槽密封锁定，第一位置位于防护板处，第二位置位于下框体的顶壁处。
在一实施例中，压铆螺栓沿上下方向从防护板的下方在第一位置穿过防护板、换热板、下框体的底壁，以至少将穿过防护板的部分密封，压铆螺母沿上下方向在第二位置向下***下框体的顶壁和底壁，并将***顶壁的部位密封；或者压铆螺栓沿上下方向在第二位置向下***下框体的顶壁和底壁，并将***顶壁的部位密封；压铆螺母沿上下方向从防护板的下方在第一位置穿过防护板、换热板、下框体的底壁，以至少将穿过防护板的部分密封。
本申请的有益效果如下：自密封铆接元件能在穿过防护板的第一位置和***下框体的第二位置直接进行密封，而常规的螺钉或铆钉无法达到对***/穿过部位直接密封，需要另外的密封手段对***/穿过的部位进行密封，从而简化组装过程并降低成本。
附图说明
图1是根据本申请的电池箱的分解立体图，其中为了清楚起见，示出了电池模组。
图2是根据本申请的电池箱的俯视组装立体图。
图3是根据本申请的电池箱的仰视组装立体图。
图4是图2的仰视图。
图5是自密封铆接元件的一种形式的分解剖视图。
图6A是图4的沿A-A线作出的且翻转180度的剖视图，其中拉铆元件未进行拉铆操作。
图6B是与6A对应的剖视图，其中拉铆元件已进行拉铆操作。
图7A是与图6A对应的剖视图，其中拉铆元件颠倒180度且未进行拉铆操作。
图7B是与7A对应的剖视图，其中拉铆元件已进行拉铆操作。
图8A是图4的沿B-B线作出的且翻转180度的剖视图，其中拉铆元件未进行拉铆操作。
图8B是与8A对应的剖视图，其中拉铆元件已进行拉铆操作。
图9A是与图8A对应的剖视图，其中拉铆元件颠倒180度且未进行拉 铆操作。
图9B是与9A对应的剖视图，其中拉铆元件已进行拉铆操作。
图10A是图4的沿C-C线作出的且翻转180度的剖视图，其中内部梁仅示出底壁且拉铆元件未进行拉铆操作。
图10B是与10A对应的剖视图，其中拉铆元件已进行拉铆操作。
图11是自密封铆接元件的另一种形式的分解图。
图12A是电池箱的自密封铆接元件与换热板、内部梁以及防护板组装的另一形式的剖视图，其中压铆元件未进行压铆操作。
图12B是与12A对应的剖视图，其中压铆元件颠倒180度且未进行压铆操作。
其中，附图标记说明如下：
X左右方向                411内螺纹筒体
Y前后方向                411a突部
Z上下方向                412凸部
1换热板                  42拉铆螺栓
11流道部                 421外螺纹柱
F流道                    422盖部
12周缘部                 43垫圈
13第一板                 44压铆螺母
14第二板                 441帽体
2下框体                  442螺母压花齿
21底壁                   443螺母导向槽
22顶壁                   444内螺纹筒部
2A边框梁                 45压铆螺栓
2B内部梁                 451帽部
S中空腔                  452螺栓压花齿
3防护板                  453螺栓导向槽
31主体部                 454外螺纹杆部
32外周部                 P1第一位置
R1第一凹部               P2第二位置
R2第二凹部        5电池模组
4自密封铆接元件   51电池
41拉铆螺母        6保温垫
具体实施方式
附图示出本申请的实施例，且将理解的是，所公开的实施例仅仅是本申请的示例，本申请可以以各种形式实施，因此，本文公开的具体细节不应被解释为限制，而是仅作为权利要求的基础且作为表示性的基础用于教导本领域普通技术人员以各种方式实施本申请。
此外，诸如上、下、左、右、前和后等用于说明实施例中的各构件的操作和构造的指示方向的表述不是绝对的而是相对的，且尽管各构件处于图中所示的位置时这些指示是恰当的，但是当这些位置改变时，这些方向应有不同的解释，以对应所述改变。
图1是根据本申请的电池箱的分解立体图，其中为了清楚起见，示出了电池模组。图2是根据本申请的电池箱的俯视组装立体图。图3是根据本申请的电池箱的仰视组装立体图。图4是图2的仰视图。
根据本申请的电池箱包括换热板1、下框体2、防护板3以及自密封铆接元件4。电池箱还包括保温垫6，保温垫6设置在换热板1和防护板3之间。通过保温垫6的设置，至少在换热板1的向下方向的热传递被阻断，进而对电池模组5的电池51进行保温。保温垫6的材料可为保温棉、泡棉等。电池51可通常包括壳体以及收容于壳体内的电极组件和电解质。电极组件包括正极片、负极片和隔离膜。电池51可以为罐型(或硬壳)电池，如图1所示，相应地，壳体包括顶盖以及与顶盖装配的外壳；或者电池51可以为袋型(或软包)电池，壳体由封装膜(例如铝塑膜)制成。
换热板1用于支撑电池51并与电池51进行热交换。换热板1包括流道部11和周缘部12，流道部11设有供换热介质流动的流道F，周缘部12位于流道部11外并环绕流道部11，周缘部12位于边框梁2A的下方，流道部11与边框梁2A一起形成向上开口的容置空间，流道部11用于支撑电池51并与电池51进行热交换。具体地，换热板1包括第一板13和第二板14；第二板14从下方与第一板13结合并形成供换热介质流动的流道F。第一板13 和/或第二板14可冲压成型。为了提高热交换的效果，换热板1为导热性高的材质，优选金属材料，进一步优选铝合金材质。
下框体2位于换热板1上，下框体2与换热板1一起形成向上开口的收容电池51的容置空间，下框体2为具有中空腔S的中空结构。下框体2包括边框梁2A，边框梁2A周向封闭且在上下方向Z开口。下框体2还包括内部梁2B，位于容置空间内并固定于边框梁2A。边框梁2A和内部梁2B均可为金属材质，例如铝合金，可以采用压铸件或挤出型材。为了减重，边框梁2A和内部梁2B可以具有型腔(即边框梁2A和内部梁2B均具有后述的中空腔S)，即它们为具有型腔的型材。注意的是，边框梁2A和内部梁2B各自的纵向可以为X方向而横向可以为Y方向，或者纵向可以为Y方向而横向可以为X方向，但是在本文中，横向和纵向是梁结构自身的方向，即局部坐标系，其与图1中的电池箱的X-Y-Z方向为整体坐标系，两个坐标系之间不存在严格的对应关系。边框梁2A和内部梁2B均具有底壁21和顶壁22。
防护板3位于换热板1下方，从下方对换热板1进行防护。防护板3包括主体部31和环绕主体部31的外周部32，主体部31从下方遮盖换热板1的流道部11，外周部32位于换热板1的周缘部12下方。
自密封铆接元件4将防护板3、换热板1以及下框体2固定在一起，自密封铆接元件4沿上下方向Z穿过防护板3和换热板1，且自密封铆接元件4***下框体2并至少部分露出于下框体2，自密封铆接元件4在穿过防护板3的第一位置P1进行密封，自密封铆接元件4在***下框体2的第二位置P2进行密封。自密封铆接元件4的好处是能在穿过防护板3的第一位置P1和***下框体2的第二位置P2直接进行密封，而常规的螺钉或铆钉无法达到对***/穿过部位直接密封，需要另外的密封手段对***/穿过的部位进行密封。从而，简化组装过程并降低成本。
自密封铆接元件4可以采用多种形式。
图5是自密封铆接元件的一种形式的分解剖视图。
图5所示的自密封铆接元件4为拉铆元件。自密封铆接元件4包括拉铆螺母41和拉铆螺栓42。拉铆螺母41具有内螺纹筒体411以及凸部412，凸部412从内螺纹筒体411的端部环绕内螺纹筒体411沿径向向外突出。拉铆螺栓42包括外螺纹柱421和盖部422，盖部422从外螺纹柱421的端部环绕 外螺纹柱421沿径向向外突出。
图6A是图3的沿A-A线作出的且翻转180度的剖视图，其中拉铆元件未进行拉铆操作。图6B是与5A对应的剖视图，其中拉铆元件已进行拉铆操作。图7A是与图6A对应的剖视图，其中拉铆元件颠倒180度且未进行拉铆操作。图7B是与7A对应的剖视图，其中拉铆元件已进行拉铆操作。图8A是图3的沿B-B线作出的且翻转180度的剖视图，其中拉铆元件未进行拉铆操作。图8B是与8A对应的剖视图，其中拉铆元件已进行拉铆操作。图9A是与图8A对应的剖视图，其中拉铆元件颠倒180度且未进行拉铆操作。图9B是与9A对应的剖视图，其中拉铆元件已进行拉铆操作。图10A是图3的沿C-C线作出的且翻转180度的剖视图，其中内部梁仅示出底壁且拉铆元件未进行拉铆操作。图10B是与10A对应的剖视图，其中拉铆元件已进行拉铆操作。
在图6A至图10B所示的示例中，内螺纹筒体411穿过防护板3、换热板1、下框体2的底壁21并使部分露出在防护板3、换热板1、下框体2的底壁21三者的上下方向Z的一外侧；外螺纹柱421从防护板3、换热板1、下框体2的底壁21的上下方向Z的相反的另一外侧穿入并与内螺纹筒体411螺纹接合；拉铆螺母41的凸部412沿上下方向Z抵靠在下框体2的底壁21的靠近拉铆螺栓42的盖部422的一侧；拉铆螺母41的内螺纹筒体411的所述露出的部分设置成通过拉铆形成突部411a；拉铆螺母41的内螺纹筒体411的突部411a和拉铆螺栓42的盖部422从防护板3、换热板1、下框体2的底壁21三者的上下方向Z的相反的两侧进行密封。第一位置P1位于防护板3处，第二位置P2位于下框体2的底壁21和顶壁22中的在上方与凸部412相邻的对应一个处。
具体地，以拉铆螺栓42为参照，拉铆螺栓42可以从防护板3的下方或从下框体2的上方沿上下方向Z***，而拉铆螺母41沿上下方向Z与拉铆螺栓42相对。
如图6A、图6B、图8A、图8B、图10A和图10B所示，拉铆螺栓42的外螺纹柱421沿上下方向Z从防护板3的下方在第一位置P1穿过防护板3、穿过换热板1、在第二位置P2***下框体2的底壁21、并露出在下框体2的中空腔S中；拉铆螺母41的内螺纹筒体411的所述露出的部分位于下框 体2的中空腔S；拉铆螺母41的凸部412沿上下方向Z位于下框体2的底壁21的下侧。采用这种方式，可以使得拉铆螺栓42的长度相比后述的图7A、图7B、图9A和图9B的情况相比要短得多，由此可以使得拉铆元件小型化。进一步地，在图6A、图6B、图8A、图8B所示的示例中，拉铆螺母41的凸部412沿上下方向Z位于下框体2的底壁21的下侧；凸部412被下框体2的底壁21和防护板3直接夹持。在图10A和图10B所示的示例中，凸部412被换热板1和防护板3直接夹持。在图10A和图10B所示的示例中，防护板3设有第二凹部R2，凸部412收容于第二凹部R2中，从而在保证防护板3厚度无需增加的情况下来收容凸部412，进而满足轻量化的要求。
如图7A、图7B、图9A和图9B所示，拉铆螺栓42的外螺纹柱421沿上下方向Z从下框体2的上方***下框体2的顶壁22、穿过下框体2的底壁21、穿过换热板1、在第一位置P1穿过防护板3、并露出在防护板3的下方；拉铆螺母41的内螺纹筒体411的所述露出的部分位于防护板3的下方。在图7A、图7B、图9A和图9B所示的示例中，防护板3设有第一凹部R1，拉铆螺母41的内螺纹筒体411的所述露出的部分位于第一凹部R1，从而节省空间，避免所述露出的部分在人搬运时碰伤人体。
无论拉铆螺栓42从防护板3的下方***还是从下框体2的上方***，在图6A至图10B所示的示例中，自密封铆接元件4还包括垫圈43，套设于外螺纹柱421，夹持在拉铆螺栓42的盖部422和下框体2的顶壁22或防护板3之间。垫圈43有助于增强在拉铆过程中的相应部位的抗压强度并辅助增强相应部位的密封性，尤其是垫圈43夹持在拉铆螺栓42的盖部422和防护板3之间时(由于防护板3和换热板1在上下方向Z的总厚度相比下框体2的上下方向Z的总厚度小的多)。
图11是自密封铆接元件的另一种形式的分解图。
图11所示的自密封铆接元件4为压铆元件。自密封铆接元件4包括压铆螺母44和压铆螺栓45。压铆螺母44具有帽体441、设置在帽体441的轴向内侧的螺母压花齿442、螺母导向槽443以及内螺纹筒部444。压铆螺栓45具有帽部451、设置在帽部451的轴向内侧的螺栓压花齿452、螺栓导向槽453以及外螺纹杆部454。
图12A是电池箱的自密封铆接元件与换热板、内部梁以及防护板组装的 另一形式的剖视图，其中压铆元件未进行压铆操作。图12B是与12A对应的剖视图，其中压铆元件颠倒180度且未进行压铆操作。
压铆螺栓45的帽部451和压铆螺母44的帽体441分别位于防护板3、换热板1和下框体2的顶壁22三者的上下方向Z的相反的两侧，压铆螺母44的内螺纹筒部444与压铆螺栓45的外螺纹杆部454穿过防护板3、换热板1和下框体2三者并接合，压铆螺栓45的螺栓压花齿452使其对应穿过的部分变形而与压铆螺栓45的螺栓导向槽453密封锁定且压铆螺母44的螺母压花齿442使其对应穿过的部分变形而与压铆螺母44的螺母导向槽443密封锁定，第一位置P1位于防护板3处，第二位置P2位于下框体2的顶壁22处。
与前述的拉铆元件一样，以压铆螺栓45为参照，压铆螺栓45可以从防护板3的下方或从下框体2的上方沿上下方向Z***，而压铆螺母44沿上下方向与压铆螺栓45相对。
如图12A所示，压铆螺栓45沿上下方向Z从防护板3的下方在第一位置P1穿过防护板3、穿过换热板1和下框体2的底壁21，以至少将穿过防护板3的部分密封；压铆螺母44沿上下方向Z在第二位置P2向下***下框体2的顶壁22和底壁21，并将***顶壁22的部位密封。
如图12B所示，压铆螺栓45沿上下方向Z在第二位置P2向下***下框体2的顶壁22和底壁21，并将***顶壁22的部位密封，压铆螺母44沿上下方向Z从防护板3的下方在第一位置P1穿过防护板3、换热板1、下框体2的底壁21，以至少将穿过防护板3的部分密封。
无论压铆螺栓45从防护板3的下方***还是从下框体2的上方***，在图12A和图12B所示的示例中，自密封铆接元件4还包括垫圈43，垫圈43套设于外螺纹杆部454、夹持在压铆螺栓45的帽部451和防护板3之间或夹持在压铆螺母44的帽体441和防护板3之间。垫圈43有助于增强在压铆过程中的防护板3的抗压强度并辅助增强防护板3的密封性。上面详细的说明描述多个示范性实施例，但本文不意欲限制到明确公开的组合。因此，除非另有说明，本文所公开的各种特征可以组合在一起而形成出于简明目的而未示出的多个另外组合。

Claims (10)

  1. 一种电池箱，其特征在于，包括：
    换热板(1)；
    下框体(2)，位于换热板(1)上，下框体(2)与换热板(1)一起形成向上开口的收容电池(51)的容置空间，换热板(1)用于支撑电池(51)并与电池(51)进行热交换，下框体(2)为具有中空腔(S)的中空结构；
    防护板(3)，位于换热板(1)下方，从下方对换热板(1)进行防护；
    自密封铆接元件(4)，将防护板(3)、换热板(1)以及下框体(2)固定在一起，自密封铆接元件(4)沿上下方向(Z)穿过防护板(3)和换热板(1)，且自密封铆接元件(4)***下框体(2)并至少部分露出于下框体(2)，自密封铆接元件(4)在穿过防护板(3)的第一位置(P1)进行密封，自密封铆接元件(4)在***下框体(2)的第二位置(P2)进行密封。
  2. 根据权利要求1所述的电池箱，其特征在于，
    下框体(2)具有底壁(21)和顶壁(22)，
    自密封铆接元件(4)为拉铆元件且包括拉铆螺母(41)和拉铆螺栓(42)，
    拉铆螺母(41)具有内螺纹筒体(411)以及凸部(412)，凸部(412)从内螺纹筒体(411)的端部环绕内螺纹筒体(411)沿径向向外突出；
    拉铆螺栓(42)包括外螺纹柱(421)和盖部(422)，盖部(422)从外螺纹柱(421)的端部环绕外螺纹柱(421)沿径向向外突出；
    内螺纹筒体(411)穿过防护板(3)、换热板(1)、下框体(2)的底壁(21)并使部分露出在防护板(3)、换热板(1)、下框体(2)的底壁(21)三者的上下方向(Z)的一外侧；
    外螺纹柱(421)从防护板(3)、换热板(1)、下框体(2)的底壁(21)的上下方向(Z)的相反的另一外侧穿入并与内螺纹筒体(411)螺纹接合；
    拉铆螺母(41)的凸部(412)沿上下方向(Z)抵靠在下框体(2)的底壁(21)的靠近拉铆螺栓(42)的盖部(422)的一侧；
    拉铆螺母(41)的内螺纹筒体(411)的所述露出的部分设置成通过拉 铆形成突部(411a)；
    拉铆螺母(41)的内螺纹筒体(411)的突部(411a)和拉铆螺栓(42)的盖部(422)从防护板(3)、换热板(1)、下框体(2)的底壁(21)三者的上下方向(Z)的相反的两侧进行密封，第一位置(P1)位于防护板(3)处，第二位置(P2)位于下框体(2)的底壁(21)和顶壁(22)中的在上方与凸部(412)相邻的对应一个处。
  3. 根据权利要求2所述的电池箱，其特征在于，
    拉铆螺栓(42)的外螺纹柱(421)沿上下方向(Z)从防护板(3)的下方在第一位置(P1)穿过防护板(3)、穿过换热板(1)、在第二位置(P2)***下框体(2)的底壁(21)、并露出在下框体(2)的中空腔(S)中；
    拉铆螺母(41)的内螺纹筒体(411)的所述露出的部分位于下框体(2)的中空腔(S)；
    拉铆螺母(41)的凸部(412)沿上下方向(Z)位于下框体(2)的底壁(21)的下侧。
  4. 根据权利要求2所述的电池箱，其特征在于，
    拉铆螺栓(42)的外螺纹柱(421)沿上下方向(Z)从下框体(2)的上方在第二位置(P2)***下框体(2)的顶壁(22)、穿过下框体(2)的底壁(21)、穿过换热板(1)在第一位置(P1)穿过防护板(3)、并露出在防护板(3)的下方；
    拉铆螺母(41)的内螺纹筒体(411)的所述露出的部分位于防护板(3)的下方。
  5. 根据权利要求4所述的电池箱，其特征在于，
    防护板(3)设有第一凹部(R1)，拉铆螺母(41)的内螺纹筒体(411)的所述露出的部分位于第一凹部(R1)。
  6. 根据权利要求4所述的电池箱，其特征在于，
    拉铆螺母(41)的凸部(412)沿上下方向(Z)位于下框体(2)的底 壁(21)的下侧；
    凸部(412)被下框体(2)的底壁(21)和防护板(3)直接夹持。
  7. 根据权利要求4所述的电池箱，其特征在于，
    凸部(412)被换热板(1)和防护板(3)直接夹持。
  8. 根据权利要求7所述的电池箱，其特征在于，
    防护板(3)设有第二凹部(R2)，凸部(412)收容于第二凹部(R2)中。
  9. 根据权利要求1所述的电池箱，其特征在于，
    下框体(2)具有底壁(21)和顶壁(22)，
    自密封铆接元件(4)为压铆元件且包括压铆螺母(44)和压铆螺栓(45)，
    压铆螺母(44)具有帽体(441)、设置在帽体(441)的轴向内侧的螺母压花齿(442)、螺母导向槽(443)以及内螺纹筒部(444)，
    压铆螺栓(45)具有帽部(451)、设置在帽部(451)的轴向内侧的螺栓压花齿(452)、螺栓导向槽(453)以及外螺纹杆部(454)；
    压铆螺栓(45)的帽部(451)和压铆螺母(44)的帽体(441)位于防护板(3)、换热板(1)和下框体(2)的顶壁(22)三者的上下方向(Z)的相反的两侧，压铆螺母(44)的内螺纹筒部(444)与压铆螺栓(45)的外螺纹杆部(454)穿过防护板(3)、换热板(1)和下框体(2)三者并接合，压铆螺栓(45)的螺栓压花齿(452)使其对应穿过的部分变形而与压铆螺栓(45)的螺栓导向槽(453)密封锁定且压铆螺母(44)的螺母压花齿(442)使其对应穿过的部分变形而与压铆螺母(44)的螺母导向槽(443)密封锁定，第一位置(P1)位于防护板(3)处，第二位置(P2)位于下框体(2)的顶壁(22)处。
  10. 根据权利要求9所述的电池箱，其特征在于，
    压铆螺栓(45)沿上下方向(Z)从防护板(3)的下方在第一位置(P1)穿过防护板(3)、换热板(1)、下框体(2)的底壁(21)，以至少将穿 过防护板(3)的部分密封，压铆螺母(44)沿上下方向(Z)在第二位置(P2)向下***下框体(2)的顶壁(22)和底壁(21)，并将***顶壁(22)的部位密封；或者
    压铆螺栓(45)沿上下方向(Z)在第二位置(P2)向下***下框体(2)的顶壁(22)和底壁(21)，并将***顶壁(22)的部位密封；压铆螺母(44)沿上下方向(Z)从防护板(3)的下方在第一位置(P1)穿过防护板(3)、换热板(1)、下框体(2)的底壁(21)，以至少将穿过防护板(3)的部分密封。
PCT/CN2019/123695 2018-12-29 2019-12-06 电池箱 WO2020134980A1 (zh)

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Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN209104331U (zh) * 2018-12-29 2019-07-12 宁德时代新能源科技股份有限公司 电池包
CN209183581U (zh) * 2018-12-29 2019-07-30 宁德时代新能源科技股份有限公司 电池箱
CN111092178A (zh) * 2019-12-25 2020-05-01 北京海纳川汽车部件股份有限公司 车辆的电池箱和车辆
CN111063843B (zh) * 2019-12-25 2023-01-24 北京海纳川汽车部件股份有限公司 车辆的电池箱和车辆
FR3107398A1 (fr) * 2020-02-17 2021-08-20 Valeo Systemes Thermiques Compartiment pour un équipement susceptible de dégager de la chaleur
JP7434360B2 (ja) * 2021-07-29 2024-02-20 寧徳時代新能源科技股▲分▼有限公司 電池、電気装置及び電池の製造方法及び製造システム
CN113594601B (zh) * 2021-08-06 2023-05-09 江苏奥特帕斯新能源科技有限公司 一种带有底护板的低热辐射液冷电池箱体
CN113675513A (zh) * 2021-09-03 2021-11-19 宁波信泰机械有限公司 一种复合材料电池箱体结构
WO2023159642A1 (zh) * 2022-02-28 2023-08-31 宁德时代新能源科技股份有限公司 铆接组件、电池、用电设备、铆接组件的组装方法及设备
CN115207542B (zh) * 2022-09-16 2022-11-18 中创新航科技股份有限公司 一种电池包外壳及电池包

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207818706U (zh) * 2018-02-08 2018-09-04 宁德时代新能源科技股份有限公司 电池包
CN207977365U (zh) * 2018-01-16 2018-10-16 昆明新能源汽车工程技术中心有限公司 电池包和具有该电池包的车辆
CN208093632U (zh) * 2018-04-24 2018-11-13 北京新能源汽车股份有限公司 电池包下壳体组件
CN208256757U (zh) * 2018-05-07 2018-12-18 宁德时代新能源科技股份有限公司 围框及电池模组
CN209183581U (zh) * 2018-12-29 2019-07-30 宁德时代新能源科技股份有限公司 电池箱

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5811168B2 (ja) * 2013-12-25 2015-11-11 トヨタ自動車株式会社 車両用電池搭載構造
CN105336888B (zh) * 2014-07-17 2018-04-24 宁德新能源科技有限公司 电池模组
CN207165693U (zh) * 2017-09-15 2018-03-30 江苏维科新能源科技有限公司 一种锂电池组的密封结构
CN107732061A (zh) * 2017-09-29 2018-02-23 凌云工业股份有限公司 一种用于新能源汽车的集成式水冷动力电池壳体
CN108063202B (zh) * 2017-12-08 2023-11-14 江西安驰新能源科技有限公司 一种电池箱体

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207977365U (zh) * 2018-01-16 2018-10-16 昆明新能源汽车工程技术中心有限公司 电池包和具有该电池包的车辆
CN207818706U (zh) * 2018-02-08 2018-09-04 宁德时代新能源科技股份有限公司 电池包
CN208093632U (zh) * 2018-04-24 2018-11-13 北京新能源汽车股份有限公司 电池包下壳体组件
CN208256757U (zh) * 2018-05-07 2018-12-18 宁德时代新能源科技股份有限公司 围框及电池模组
CN209183581U (zh) * 2018-12-29 2019-07-30 宁德时代新能源科技股份有限公司 电池箱

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