WO2025010677A1 - 端盖组件、储能装置及用电设备 - Google Patents

端盖组件、储能装置及用电设备 Download PDF

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Publication number
WO2025010677A1
WO2025010677A1 PCT/CN2023/107080 CN2023107080W WO2025010677A1 WO 2025010677 A1 WO2025010677 A1 WO 2025010677A1 CN 2023107080 W CN2023107080 W CN 2023107080W WO 2025010677 A1 WO2025010677 A1 WO 2025010677A1
Authority
WO
WIPO (PCT)
Prior art keywords
rivet
hole
protrusion
insulating member
column
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2023/107080
Other languages
English (en)
French (fr)
Inventor
李茂松
檀基本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiamen Hithium Energy Storage Technology Co Ltd
Shenzhen Hithium Energy Storage Technology Co Ltd
Original Assignee
Xiamen Hithium Energy Storage Technology Co Ltd
Shenzhen Hithium Energy Storage Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xiamen Hithium Energy Storage Technology Co Ltd, Shenzhen Hithium Energy Storage Technology Co Ltd filed Critical Xiamen Hithium Energy Storage Technology Co Ltd
Priority to PCT/CN2023/107080 priority Critical patent/WO2025010677A1/zh
Publication of WO2025010677A1 publication Critical patent/WO2025010677A1/zh
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/564—Terminals characterised by their manufacturing process
    • H01M50/567—Terminals characterised by their manufacturing process by fixing means, e.g. screws, rivets or bolts
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/593—Spacers; Insulating plates

Definitions

  • the first protrusion is arranged at the edge of the peripheral wall of the first surface close to the second through hole
  • the rivet includes a third through hole
  • the third through hole is opposite to the second through hole
  • the first groove is arranged at the edge of the peripheral wall of the second surface close to the third through hole.
  • the plurality of first protrusions are diagonally distributed on the first surface, and the plurality of first grooves are diagonally distributed on the second surface.
  • the cross-sectional area of the first protrusion cut along a plane perpendicular to the thickness direction of the insulating member gradually decreases in the direction from the first end to the second end, and the minimum cross-sectional area of the first protrusion cut along a plane perpendicular to the thickness direction of the insulating member is equal to 0.
  • a thickness of the first protrusion along a thickness direction of the insulating member is greater than a depth of the first groove along a thickness direction of the rivet member.
  • the compression rivet includes a third surface opposite to the second surface, the first groove is formed from the second surface toward the third surface, and a third convex portion opposite to the first groove is formed on the third surface.
  • a first groove is formed by being recessed from the second surface toward the third surface at the corner of the rivet, and a third convex portion opposite to the first groove is raised on the third surface. In other words, a folding process is performed at the corner of the rivet, which simplifies the manufacturing process of the rivet.
  • the positive projection of the column part on a plane perpendicular to the thickness direction of the pole is a rounded rectangle, that is, the outer peripheral side of the column part is a rounded rectangle, and the four corners of the column part are formed with fourth convex parts.
  • the rivet can abut against the fourth convex part, so that the column part has a larger deformation amount when punched, so that the four corners of the column part extend outwardly and deform more than the four flat sides of the column part, so as to better press the four corners of the rivet and the insulating part, provide greater crimping strength, prevent the corners of the rivet and the insulating part from warping, and thus provide better Good sealing performance.
  • a vertical distance between a highest point of the fourth protrusion in the thickness direction of the column portion and the fourth surface is H, and the vertical distance H satisfies: 0.05 mm ⁇ H ⁇ 2.45 mm.
  • the vertical distance H between the highest point of the fourth protrusion in the thickness direction of the column portion and the fourth surface is less than 0.05mm, when the column portion is stamped by the rivet, the deformation at the four corners of the column portion is small, the range of outward extension is small, and the crimping strength of the outwardly extended part to the rivet and the insulating part is low; if the vertical distance H between the highest point of the fourth protrusion in the thickness direction of the column portion and the fourth surface is greater than 2.45mm, the height of the fourth protrusion is too high, and when the column portion is stamped by the rivet, the deformation at the four corners of the column portion is too large, the range of outward extension is too large, which is easy to affect the installation of other components in the end cover assembly, and greater pressure is required when stamping the column portion by the rivet, which increases the difficulty of stamping.
  • the vertical distance H between the highest point of the four protrusions in the thickness direction of the column part and the fourth surface is greater than or equal to 0.05 mm and less than or equal to 2.45 mm, when the column part is stamped by the rivet, the four corners of the column part have a larger deformation, so that the part of the fourth protrusion extending outward after stamping can be tightly pressed on the four corners of the rivet and the insulating part, providing greater crimping strength to the rivet, and thus providing better sealing performance.
  • the column portion is formed with a plurality of lugs, the plurality of lugs are arranged at a corner of an end of the column portion away from the flange portion, and the second protrusion is connected to the plurality of lugs in a circumferential direction of the column portion.
  • the rivet punches the fourth protrusions at the four corners of the column. Because the height of the fourth protrusion is higher than the height of the four flat sides of the column, the range of outward deformation at the four corners of the column is larger than the range of outward deformation of the side walls where the four flat sides of the column are located.
  • four lugs are formed at the positions of the four fourth protrusions of the column. In this way, the four lugs formed at the diagonal positions can reliably press the corner positions of the insulating part and the rivet, and the second protrusion is connected to the multiple lugs in the circumferential direction.
  • the second protrusion and the multiple lugs jointly limit the rivet and the insulating part, which better improves the sealing performance of the end cover assembly and prevents electrolyte leakage.
  • the rivet and the insulating part are relatively flat and no longer warped, ensuring the effective fit between the top patch installed on the top cover and the top cover.
  • a distance between an outer edge of the lug and a side wall of the column portion is greater than a distance between an outer edge of the second protrusion and the side wall of the column portion.
  • the distance between the outer edge of the lug and the side wall of the column part is greater than the distance between the outer edge of the second protrusion and the side wall of the column part.
  • the lug can better crimp the connection between the rivet and the insulating part at the corner, ensuring that the rivet and the insulating part can fit together reliably, thereby improving the sealing performance of the end cover assembly.
  • the insulating member includes a main body, a first convex ring and a second convex ring, the main body is arranged on the top cover, the first convex ring is arranged on a side of the main body facing the top cover and is located in the first through hole, the second convex ring is arranged on a side of the first convex ring away from the main body and is located in the first through hole, the distance between the inner wall surface of the first convex ring and the peripheral wall of the first through hole is greater than the distance between the inner wall surface of the second convex ring and the peripheral wall of the first through hole, the first convex ring, the second convex ring and the main body together form the second through hole, and the end cover assembly also includes a sealing member, which is sleeved on the column portion and located in the first through hole, and the surface of the second convex ring on a side away from the first convex ring abuts against the surface
  • the seal When assembling the pole, the seal can be sleeved on the column part, and then the pole and the seal can be assembled on the top cover together, wherein the column part is penetrated with a first through hole and partially embedded in the gap between the first convex ring and the second convex ring, and the surface of the second convex ring facing away from the first convex ring is pressed against the surface of the seal facing the top cover, and the second convex ring can squeeze the seal along the thickness direction of the column part, and apply a squeezing force to the seal along the thickness direction of the column part, so that the seal is deformed along the radial direction of the column part.
  • the sealing member can fit tightly against the outer peripheral surface of the column part to seal between the outer peripheral surface of the column part and the peripheral wall of the first through hole.
  • the rivet and the insulating member are firmly and flatly installed on the side of the top cover away from the flange part, preventing the edges of the rivet and the insulating member from warping up, which causes the sealing performance of the end cover assembly to decrease after the seal ages and hardens under long-term use, thereby preventing electrolyte leakage.
  • the main body includes a first section and a second section, the first protrusion is arranged on the second section, the second section is arranged on the surface of the first section facing away from the top cover, the inner side wall of the second section is flush with the peripheral wall of the second through hole, the outer peripheral edge of the second section has a second arc surface, and the first section and the second section both surround the second through hole; in the width direction of the insulating part, the width of the first section is greater than the width of the second section, and the width of the second section is greater than the width of the rivet.
  • the second section is stacked on the side of the first section close to the second through hole, and the width of the first section is greater than the width of the second section, that is, the thickness of the inner ring part of the insulating member is thicker, and the thickness of the outer ring is thinner.
  • the outer peripheral edge of the second section has a second arc surface, so that the outer peripheral edge of the second section transitions with the arc of the first section, and the first section and the second section protruding from the top cover are in a stepped tower shape that gradually increases from top to bottom.
  • the top patch When the top patch is attached later, it can be easily embedded from the upper surface of the pole at both ends, and the positioning is adjusted layer by layer to avoid the excessive height difference between the first section and the second section protruding from the top cover, causing interference and blocking when the top patch is inserted; at the same time, it is prevented that the outer peripheral edge of the body is lifted up due to the pressure of riveting, affecting the subsequent process of attaching the top patch to the top cover.
  • the rivet After the rivet is set on the column part, the rivet abuts on the surface of the second section away from the top cover, and the width of the second section is greater than the width of the rivet, so that the rivet presses the body with a larger area.
  • an embodiment of the present application provides an energy storage device, the energy storage device comprising a housing, an electrode assembly and an end cap assembly as described in the first aspect.
  • the housing forms a receiving space, and the receiving space has an opening.
  • the electrode assembly is received in the receiving space.
  • the end cap assembly covers the opening, and the end cap assembly further comprises an adapter, and the electrode assembly is electrically connected to the pole through the adapter.
  • an embodiment of the present application provides an electrical device, wherein the electrical device comprises an energy storage device as described in the second aspect, and the energy storage device supplies power to the electrical device.
  • the column portion when assembling the end cover assembly, the column portion is penetrated with a first through hole to protrude from the top cover, and then the rivet is installed on the first surface of the insulating member, and the insulating member and the rivet are fixedly connected to the top cover by riveting and stamping.
  • the column portion is penetrated with a first through hole and a second through hole and protrudes from the first surface, and there is no need to wait for the cooling time of the injection molding of the insulating member after assembling the top cover and the pole, thereby effectively improving the assembly efficiency and the mass production efficiency of the end cover assembly.
  • a plurality of first protrusions extend along the thickness direction of the insulating part, and a plurality of first grooves corresponding to and matching the plurality of first protrusions are formed at the corners of the second surface of the rivet, and the first protrusions are accommodated in the first grooves, so that the connection between the rivet and the insulating part can be tightly pressed at the corner, preventing the rivet and/or the insulating part from warping at the corner, and enhancing the connection stability between the rivet and the insulating part.
  • the rivet is located between the insulating part and the second protrusion, and the second protrusion can press the four flat edges of the rivet to ensure that the rivet and the insulating part can be tightly pressed in the circumferential direction, avoiding the insulating part or the rivet from warping after the rivet connection, thereby affecting the sealing of the end cover assembly and avoiding electrolyte leakage.
  • FIG1 is a schematic diagram of an application scenario of an energy storage system provided in an embodiment of the present application.
  • FIG2 is a schematic diagram of a three-dimensional structure of an energy storage device provided in an embodiment of the present application.
  • FIG3 is a schematic diagram of a three-dimensional exploded structure of an end cap assembly provided in an embodiment of the present application.
  • FIG4 is a schematic diagram of a three-dimensional structure of a compression riveted component in an end cap assembly provided in an embodiment of the present application;
  • FIG5 is a schematic cross-sectional view of the end cap assembly of the energy storage device shown in FIG2 along line V-V;
  • FIG6 is an enlarged schematic diagram of a portion VI of the end cap assembly shown in FIG5 ;
  • FIG7 is an enlarged schematic diagram of a position VII of the press riveted part shown in FIG4 ;
  • FIG8 is a schematic diagram of a three-dimensional structure of an insulating member in an end cap assembly provided in an embodiment of the present application.
  • FIG9 is an enlarged schematic diagram of a position IX in the press riveted part shown in FIG8;
  • FIG. 10 is a schematic diagram of the cross-sectional structure of a pole in an end cover assembly before stamping according to an embodiment of the present application.
  • End cap assembly-10 top cover-11, first through hole-111, insulating member-12, second through hole-121, first convex portion-122, first end-1221, second end-1222, first plane-1223, second plane-1224, first arc surface-1225, first surface-123, body-124, first subdivision-1241, second subdivision-1242, second arc surface-1243, first convex ring-125, second convex ring-126, first diagonal line-oo1, second diagonal line-oo2, pole-13, column part-131, fourth surface-1 311, lug-1312, second protrusion-132, flange-133, fourth protrusion-134, rivet-14, first groove-141, second surface-142, third through hole-143, third surface-144, third protrusion-145, third diagonal-oo3, fourth diagonal-oo4, seal-15, adapter-16, shell-20, receiving space-21, opening-22, electrode assembly-30, energy storage device-100, electrical equipment-1000, electric energy conversion device-2000, wind energy conversion device-3000, vertical distance-H.
  • connection and “coupling” mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).
  • this solution provides an energy storage device 100, which has a group of chemical batteries in it.
  • the chemical elements in the chemical batteries are mainly used as energy storage media.
  • the charging and discharging process is accompanied by chemical reactions or changes in the energy storage media.
  • the electricity generated by wind and solar energy is stored in chemical batteries.
  • the use of external electricity reaches a peak, the stored electricity is released for use, or transferred to places where electricity is scarce for use.
  • the energy storage device 100 provided in the embodiment of the present application is applied to an energy storage system, which includes an electric energy conversion device 2000 (photovoltaic panel), a wind energy conversion device 3000 (wind turbine), an electrical equipment 1000 (grid), and an energy storage device 100.
  • the energy storage system also includes an energy storage cabinet, and the energy storage device 100 is installed in the energy storage cabinet and can be installed outdoors.
  • the photovoltaic panel can convert solar energy into electric energy during the period of low electricity prices.
  • the energy storage device 100 is used to store the electric energy and supply it to the grid when the electricity price is peak, or to supply power when the grid is powered off/out of power.
  • the wind energy conversion device 3000 (wind turbine) can convert wind energy into electric energy.
  • the energy storage device 100 is used to store the electric energy and supply it to the grid when the electricity price is peak, or to supply power when the grid is powered off/out of power.
  • the transmission of electric energy can be transmitted using high-voltage cables.
  • the number of energy storage devices 100 can be several, and several energy storage devices 100 are connected in series or in parallel. Several energy storage devices 100 are supported and electrically connected by isolation plates (not shown). In this embodiment, “several” refers to two or more. An energy storage box can also be provided outside the energy storage device 100 to accommodate the energy storage device 100.
  • the energy storage device 100 may include but is not limited to a single cell, a battery module, a battery pack, a battery system, etc.
  • the actual application form of the energy storage device 100 provided in the embodiment of the present application may be but is not limited to the listed products, and may also be other application forms.
  • the embodiment of the present application does not strictly limit the application form of the energy storage device 100.
  • the embodiment of the present application only takes the energy storage device 100 as a multi-core battery as an example for explanation.
  • the energy storage device 100 includes a housing 20, an electrode assembly 30, and an end cap assembly 10 provided in an embodiment of the present application.
  • the housing 20 is formed with a receiving space 21, and the receiving space 21 has an opening 22.
  • the electrode assembly 30 is received in the receiving space 21, and the end cap assembly 10 covers the opening 22.
  • the end cap assembly 10 also includes an adapter 16, and the electrode assembly 30 is electrically connected to the pole 13 through the adapter 16.
  • the energy storage system provided in this application can also be a household energy storage system.
  • the electrical equipment 1000 provided in the present application includes but is not limited to electrical equipment 1000 such as a power grid and a base station.
  • the plurality of first protrusions 122 are arranged at the corners of the first surface 123 of the insulating member 12.
  • the first surface 123 is the surface of the insulating member 12 on the side away from the top cover 11.
  • the plurality of first protrusions 122 are arranged around the second through hole 121.
  • the pole 13 includes a columnar portion 131 and a second protrusion 132.
  • the orthographic projection of the columnar portion 131 on a plane perpendicular to the thickness direction of the columnar portion 131 is a rounded rectangle.
  • the columnar portion 131 is penetrated by a first through hole 111 and a second through hole 121 and protrudes from the first surface 123.
  • the second protrusion 132 is arranged on the outer peripheral surface of the columnar portion 131 and is located on the side of the columnar portion 131 protruding from the first surface 123.
  • the orthographic projection of the rivet 14 on a plane perpendicular to the thickness direction of the rivet 14 is a rounded rectangle.
  • the rivet 14 includes a plurality of first grooves 141 corresponding one to one with the plurality of first protrusions 122.
  • the plurality of first grooves 141 are arranged at the corners of the second surface 142 of the rivet 14.
  • the second surface 142 is the surface of the rivet 14 facing the insulating member 12.
  • the first protrusion 122 is accommodated in the first groove 141.
  • the rivet 14 is sleeved on the column portion 131.
  • the column portion 131 and the insulating member 12 are riveted and fixed to the top cover 11 by the rivet 14.
  • the rivet 14 is located between the insulating member 12 and the second protrusion 132.
  • the thickness direction of a certain component mentioned in the present application is the first direction A as shown in FIG. 3
  • the width direction of a certain component is the same as the radial direction, which is the radial direction of the circular hole opened on the pole 13 as shown in FIG. 3 .
  • the pressure applied to the rivet 14 by the four corners of the column 131 after compression deformation is less than the pressure applied to the rivet 14 by the four flat sides of the column 131.
  • multiple first protrusions 122 extend along the thickness direction of the insulating member 12, and multiple first grooves 141 corresponding to the multiple first protrusions 122 are formed at the corners of the second surface 142 of the rivet 14, and the first protrusions 122 are accommodated in the first grooves 141, so that the connection between the rivet 14 and the insulating member 12 can be tightly pressed at the corner, preventing the rivet 14 and/or the insulating member 12 from warping at the corner, and strengthening the connection stability between the rivet 14 and the insulating member 12, and the rivet 14 is located between the insulating member 12 and the second protrusion 132, and the second protrusion 132 can press the four
  • the first surface 123 may be a surface of the insulating member 12 that is farthest from the top cover 11 in the thickness direction.
  • the first through hole 111 and the second through hole 121 are opposite to each other, which means that when the insulating member 12 is stacked on the top cover 11 in the thickness direction of the insulating member 12, the first through hole 111 and the second through hole 121 are opposite to each other in the thickness direction of the insulating member 12, and the first through hole 111 and the second through hole 121 have the same size.
  • the first through hole 111, the second through hole 121 and the third through hole 143 of the rivet 14 are all in the shape of a rounded rectangle.
  • the size of the third through hole 143 of the rivet 14 is slightly larger than the column 131.
  • the rivet 14 is slightly larger than the column 131.
  • the rivet 14 and the insulating member 12 are stacked in the thickness direction of the insulating member 12, wherein the orthographic projection area of the insulating member 12 on a plane perpendicular to the thickness direction of the insulating member 12 is larger than the orthographic projection area of the rivet 14 on a plane perpendicular to the thickness direction of the rivet 14, thereby ensuring insulation between the top cover 11 and the rivet 14 and improving the safety of the energy storage device 100.
  • the first protrusion 122 is disposed on the first surface 123 at an edge of a peripheral wall close to the second through hole 121
  • the rivet 14 includes a third through hole 143
  • the third through hole 143 is opposite to the second through hole 121
  • the first groove 141 is disposed on the second surface 142 at an edge of a peripheral wall close to the third through hole 143 .
  • the third through hole 143 is opposite to the first through hole 111 and the second through hole 121.
  • the column portion 131 is penetrated by a first through hole 111, a second through hole 121, and a third through hole 143.
  • the column portion 131 fits with the peripheral wall of the first through hole 111, the peripheral wall of the second through hole 121, and the peripheral wall of the third through hole 143 to reduce the gap between the column portion 131 and the insulating part 12, and the gap between the column portion 131 and the rivet 14, thereby ensuring the sealing between the column portion 131, the insulating part 12, and the rivet 14.
  • the first protrusion 122 is located at the edge of the peripheral wall of the second through hole 121 close to the first surface 123, and the first groove 141 is provided at the edge of the peripheral wall of the second surface 142 close to the third through hole 143.
  • the insulating member 12 and the rivet member 14 can be firmly connected near the peripheral edge of the second through hole 121, and the insulating member 12 and the rivet member 14 are effectively prevented from warping at the abutment point at the peripheral edge of the second through hole 121, which affects the sealing of the connection between the column portion 131 and other components, and prevents leakage of the energy storage device 100.
  • the plurality of first protrusions 122 are diagonally distributed on the first surface 123
  • the plurality of first grooves 141 are diagonally distributed on the second surface 142 .
  • Two first protrusions 122 are respectively provided on the first diagonal oo1 of the insulating member 12, and two first protrusions 122 are respectively provided on the second diagonal oo2 of the insulating member 12.
  • two first grooves 141 are respectively provided on the third diagonal oo3 of the rivet 14, and two first grooves 141 are respectively provided on the fourth diagonal oo4 of the rivet 14.
  • the diagonally distributed first protrusions 122 and first grooves 141 can effectively press the diagonal positions of the rivet 14 and the insulating member 12, prevent the rivet 14 and the insulating member 12 from warping at the diagonal positions, ensure that the rivet 14 and the insulating member 12 are relatively flat after pressing, and better improve the sealing performance of the end cap assembly 10 at the column portion 131 to prevent electrolyte leakage.
  • the first protrusions 122 and the first grooves 141 can be effectively reduced, effectively saving costs.
  • the first diagonal line oo1 connects two corners of the first surface 123
  • the second diagonal line oo2 connects the other two corners of the first surface 123
  • the third diagonal line oo3 connects the two corners of a surface of the rivet 14 facing the insulating part 12
  • the third diagonal line oo3 connects the other two corners of a surface of the rivet 14 facing the insulating part 12.
  • connection between the first protrusion 122 and the peripheral wall of the second through hole 121 is an arc transition at the corner of the first surface 123 .
  • a first protrusion 122 is provided at each corner of the insulating member 12, and a first protrusion 122 is provided at each corner of the rivet member 14.
  • the first groove 141 adapted to the first protrusion 122 prevents the rivet 14 and/or the insulating member 12 from rising during the riveting connection of the column portion 131 through the rivet 14, thereby preventing the sealing of the end cover assembly 10 at the connection of the column portion 131 from decreasing, thereby preventing leakage of electrolyte.
  • the first convex portion 122 is adapted to the first groove 141, the first convex portion 122 includes a first end portion 1221 and a second end portion 1222 opposite to each other, the first end portion 1221 is in contact with the first surface 123, the first convex portion 122 is extended from the second end portion 1222 toward the first end portion 1221 in the radiation direction of the second end portion 1222, and the first convex portion 122 includes a first plane 1223, a second plane 1224 and a first arc surface 1225 connected in sequence, the first plane 1223, the second plane 1224 and the first arc surface 1225 are connected in sequence, The extension directions of the first curved surface 1224 and the first curved surface 1225 are different from each other.
  • the first plane 1223, the second plane 1224 and the first curved surface 1225 enclose the circumference of the first convex portion 122.
  • the bottom edge of the first curved surface 1225 is flush with the side wall of the second through hole 121.
  • the bottom edge of the first curved surface 1225 is located on the first surface 123.
  • the first plane 1223, the second plane 1224 and the end of the first curved surface 1225 facing away from the first surface 123 form a second end portion 1222.
  • the first groove 141 is connected to the third through hole 143.
  • the edge of the connection between the first plane 1223 and the second plane 1224 is opposite to the first arc surface 1225 , and there is a gap between the connection between the first plane 1223 and the second plane 1224 on the first surface 123 and the outer edge of the first surface 123 away from the second through hole 121 .
  • the adaptation of the first protrusion 122 to the first groove 141 means that the shape of the first protrusion 122 is the same as that of the first groove 141, the first protrusion 122 can be inserted into the first groove 141 along the side wall of the first groove 141, and the first plane 1223 and the second plane 1224 are both in contact with the side wall of the first groove 141.
  • the first end 1221 of the first protrusion 122 is triangular in shape (wherein the bottom edge of the first arc surface 1225 is an arc edge), and the first protrusion 122 and the first groove 141 are adapted, that is, the side wall of the first groove 141 is tightly fitted with the side wall of the first protrusion 122, and after the first protrusion 122 is inserted into the first groove 141, the first protrusion 122 can be stably assembled in the first groove 141, and after the insulating part 12 and the column part 131 are riveted to the top cover 11 by the rivet 14, the first protrusion 122 can be stably limited in the first groove 141, ensuring the stability of the connection between the first protrusion 122 and the first groove 141, and strengthening the connection strength between the rivet 14 and the insulating part 12 at the corner.
  • the cross-sectional area of the first protrusion 122 cut along a plane perpendicular to the thickness direction of the insulating member 12 gradually decreases in the direction from the first end 1221 to the second end 1222, and the minimum cross-sectional area of the first protrusion 122 cut along a plane perpendicular to the thickness direction of the insulating member 12 is equal to 0.
  • the width of the first protrusion 122 extending along the diagonal line (such as the first diagonal line oo1 or the second diagonal line oo2) gradually decreases in the direction from the first end 1221 to the second end 1222
  • the width of the first groove 141 extending along the diagonal line (such as the third diagonal line oo3 or the fourth diagonal line oo4) gradually decreases in the direction from the first end 1221 to the second end 1222.
  • the cross-sectional area of the first protrusion 122 decreases successively, and the area enclosed by the side wall of the first groove 141 also decreases successively, that is, the first protrusion 122 is a peak-shaped structure, and the outer peripheral wall of the first protrusion 122 fits the peripheral wall of the first groove 141.
  • the first protrusion 122 of the peak-shaped structure can be inserted into the first groove 141 along the side wall of the first groove 141, which can play a guiding role and improve the installation efficiency.
  • the first protrusion 122 of the peak-shaped structure After the first protrusion 122 of the peak-shaped structure is inserted into the first groove 141, the first protrusion 122 can be stably transferred to the first groove 141, effectively improving the stability of the fit between the insulating member 12 and the rivet 14, and improving the sealing performance of the end cap assembly 10 in the column portion 131.
  • the thickness of the first protrusion 122 along the thickness direction of the insulating member 12 is greater than the depth of the first groove 141 along the thickness direction of the rivet member 14 .
  • the first convex portion 122 is a peak-shaped structure, and the height of the edge where the first plane 1223 and the second plane 1224 are connected is greater than the depth of the first groove 141 corresponding to the edge.
  • the difference between the depths at the corresponding positions of the edge is greater than or equal to 0.01 mm and less than or equal to 0.15 mm, avoiding the difference between the height of the edge and the depth at the corresponding position in the first groove 141 being too large or too small, ensuring that the first protrusion 122 and the first groove 141 can fit tightly, while reducing the riveting difficulty of the rivet 14.
  • the four corners of the insulating part 12 are higher than the flat edges of the insulating part 12.
  • the corners of the insulating part 12 and the rivet 14 are correspondingly placed at the corners of the column part 131, so that the four corners of the column part 131 are subjected to greater riveting pressure, and the deformation of the four corners of the column part 131 is also greater, so that there is a margin to fill the gap between the arc edges at the corners of the column part 131.
  • the first protrusion 122 may be in a rectangular structure, and the side wall of the first protrusion 122 facing the second through hole 121 is flush with the peripheral wall of the second through hole 121, that is, the side wall of the first protrusion 122 in the rectangular structure facing the second through hole 121 is an arc-shaped side wall.
  • the two opposite surfaces of the first protrusion 122 on the first diagonal oo1 are respectively located at the two opposite edges of the first surface 123 on the first diagonal oo1; the distribution of the two first protrusions 122 on the second diagonal oo2 is similar to the distribution of the two first protrusions 122 on the first diagonal oo1, and will not be repeated.
  • the two surfaces of the first groove 141 on the third diagonal oo3 are respectively located at the two opposite edges of the second surface 142 on the third diagonal oo3, and the distribution of the two first grooves 141 on the fourth diagonal oo4 is similar to the distribution of the two first grooves 141 on the third diagonal oo3, and will not be repeated.
  • the rectangular structure of the first protrusion 122 and the first groove 141 has a simple manufacturing process and can effectively improve the mass production efficiency of the end cover assembly 10 .
  • the rivet 14 includes a third surface 144 opposite to the second surface 142 .
  • the first groove 141 is recessed from the second surface 142 toward the third surface 144 .
  • a third protrusion 145 is formed on the third surface 144 opposite to the first groove 141 .
  • a first groove 141 is formed at the corner of the rivet 14 by being recessed from the second surface 142 toward the third surface 144, and a third convex portion 145 is formed on the third surface 144 opposite to the first groove 141. That is to say, a folding process is performed at the corner of the rivet 14, so that the manufacturing process of the rivet 14 is simple.
  • the pole 13 also includes a flange portion 133, the column portion 131 is installed on the flange portion 133, the flange portion 133 is located on the side of the top cover 11 away from the insulating member 12, and a fourth surface 1311 of the column portion 131 is formed with a plurality of fourth protrusions 134.
  • the fourth surface 1311 is the surface of the column portion 131 on the side away from the flange portion 133.
  • the plurality of fourth protrusions 134 protrude from the fourth surface 1311 and are respectively located at the corners of the fourth surface 1311.
  • a plurality of fourth protrusions 134 are formed on the fourth surface 1311 of the column portion 131 .
  • the column portion 131 is protruded on the flange portion 133.
  • the column portion 131 and the flange portion 133 are arranged in sequence, and the flange portion 133 is protruded from the outer periphery of the column portion 131 in a direction perpendicular to the arrangement direction of the column portion 131 and the flange portion 133 (that is, in the thickness direction of the pole 13).
  • the orthographic projection of the column portion 131 on a plane perpendicular to the thickness direction of the pole 13 is a rounded rectangle, that is, the outer peripheral side of the column portion 131 is a rounded rectangle, and fourth protrusions 134 are formed at the four corners of the column portion 131.
  • the rivet 14 can abut against the fourth protrusion 134, so that the column portion 131 has a larger deformation amount when punched, so that the four corners of the column portion 131 extend outwardly to a greater extent than the four flat edges of the column portion 131, so as to better press the four corners of the rivet 14 and the insulating member 12, provide greater crimping strength, prevent the rivet 14 and the insulating member 12 from warping at the corners, and thus provide better sealing performance.
  • the side walls of the four flat sides of the column 131 are pressed to extend outwards and form a second convex portion 132.
  • the protrusion 132 abuts against the flat edge of the rivet 14 to limit the four flat edges of the rivet 14 and the insulating member 12 between the top cover 11 and the second protrusion 132 to prevent the four flat edges of the rivet 14 and the insulating member 12 from warping.
  • a vertical distance between the highest point of the fourth protrusion 134 in the thickness direction of the column portion 131 and the fourth surface 1311 is H, and H satisfies: 0.05 mm ⁇ H ⁇ 2.45 mm.
  • the vertical distance H between the highest point of the fourth protrusion 134 in the thickness direction of the column portion 131 and the fourth surface 1311 is less than 0.05 mm, when the column portion 131 is stamped by the rivet 14, the deformation at the four corners of the column portion 131 is small, the range of outward extension is small, and the crimping strength of the outwardly extended part to the rivet 14 and the insulating member 12 is low; if the vertical distance H between the highest point of the fourth protrusion 134 in the thickness direction of the column portion 131 and the fourth surface 1311 is greater than 2.45 mm, the height of the fourth protrusion 134 is too high, and when the column portion 131 is stamped by the rivet 14, the deformation at the four corners of the column portion 131 is too large, the range of outward extension is too large, which is easy to affect the installation of other components in the end cover assembly 10, and greater pressure is required when stamping the column portion 131 by the rivet 14, which increases the difficulty of stamping.
  • the vertical distance between the highest point of the fourth protrusion 134 in the thickness direction of the column portion 131 and the fourth surface 1311 is greater than or equal to 0.05 mm and less than or equal to 2.45 mm, when the column portion 131 is punched by the rivet 14, the four corners of the column portion 131 have a larger deformation amount, so that the portion of the fourth protrusion 134 extending outward after stamping can be tightly pressed together with the four corners of the rivet 14 and the insulating member 12, providing greater crimping strength for the rivet 14, and thus providing better sealing performance. At the same time, it can also effectively reduce the difficulty of crimping and improve the assembly efficiency of the end cover assembly 10.
  • the column portion 131 is formed with a plurality of lugs 1312 , which are disposed at a corner of one end of the column portion 131 away from the flange portion 133 , and the second protrusion 132 is connected to the plurality of lugs 1312 in the circumferential direction of the column portion 131 .
  • the pressure rivet 14 punches the fourth convex parts 134 at the four corners of the column 131. Because the height of the fourth convex parts 134 is higher than the height of the flat side of the column 131, the range of the outward extension and deformation of the four corners of the column 131 is larger than the range of the outward deformation and extension of the side walls where the four flat sides of the column 131 are located. After the pressure rivet 14 is riveted, four lugs 131 are formed at the four corners of the column 131.
  • the fourth protrusion 134 is flush with the fourth surface 1311, so that the four lugs 1312 formed at the diagonal position can reliably press the corner positions of the insulating member 12 and the rivet 14, and the second protrusion 132 is connected to the plurality of lugs 1312 in the circumferential direction, and the second protrusion 132 and the plurality of lugs 1312 jointly limit the rivet 14 and the insulating member 12, thereby better improving the sealing performance of the end cap assembly 10 and preventing electrolyte leakage.
  • the rivet 14 and the insulating member 12 are relatively flat and no longer warped, ensuring that the top patch installed on the top cover 11 is effectively fitted with the top cover 11.
  • the distance between the outer edge of the lug 1312 and the side wall of the column portion 131 is greater than the distance between the outer edge of the second convex portion 132 and the side wall of the column portion 131 .
  • the outer edge of the lug 1312 is the edge of the lug 1312 away from the outer peripheral surface of the column part 131, and similarly, the outer edge of the second convex portion 132 is the edge of the outer peripheral surface of the second convex portion 132 away from the column part 131.
  • the distance between the outer edge of the lug 1312 and the outer peripheral surface of the column part 131 corresponding to the lug 1312 i.e., the outer peripheral surface at the corner of the column part 131
  • the distance between the outer edge of the lug 1312 and the side wall of the column portion 131 is greater than the distance between the outer edge of the second protrusion 132 and the side wall of the column portion 131.
  • the lug 1312 can better crimp the connection between the rivet 14 and the insulating member 12 at the corner, ensuring that the rivet 14 and the insulating member 12 can fit together reliably, thereby improving the sealing performance of the end cover assembly 10.
  • the insulating member 12 includes a body 124, a first convex ring 125 and a second convex ring 126, the body 124 is disposed on the top cover 11, and the first convex ring 125 is disposed on a side of the body 124 facing the top cover 11 and located at the first through hole 111.
  • the second protruding ring 126 is disposed on the side of the first protruding ring 125 away from the body 124 and is located in the first through hole 111.
  • the distance between the inner wall surface of the first protruding ring 125 and the peripheral wall of the first through hole 111 is greater than the distance between the inner wall surface of the second protruding ring 126 and the peripheral wall of the first through hole 111.
  • the first protruding ring 125, the second protruding ring 126 and the body 124 enclose the second through hole 121.
  • the end cover assembly 10 further includes a sealing member 15, which is sleeved on the column portion 131 and is located in the first through hole 111.
  • the surface of the second protruding ring 126 on the side away from the first protruding ring 125 abuts against the surface of the sealing member 15 on the side facing the top cover 11, so that the inner wall surface of the sealing member 15 abuts against the outer peripheral surface of the column portion 131.
  • the second protruding ring 126 is disposed at the edge of the first protruding ring 125 near the peripheral wall of the first through hole 111, and a gap is formed between the second protruding ring 126 and the column portion 131.
  • the outer peripheral walls of the first protruding ring 125 and the second protruding ring are both in contact with the peripheral wall of the first through hole 111.
  • the seal 15 can be sleeved on the column part 131, and then the pole 13 and the seal 15 are assembled to the top cover 11, wherein the column part 131 is penetrated by the first through hole 111, and part of the structure of the seal 15 is embedded in the first through hole 111, and part of it is embedded in the gap between the outer peripheral surface of the column part 131 and the second convex ring 126, and the surface of the second convex ring 126 facing away from the first convex ring 125 is pressed against the surface of the seal 15 facing the top cover 11, and the second convex ring 126 can press the seal 15 along the thickness direction of the column part 131, and give the seal 15 an extrusion force along the thickness direction of the column part 131, so that the seal 15 is deformed along the radial direction of the column part 131 and pressed against the outer peripheral surface of the column part 131, so that the seal 15 is tightly fitted to the outer peripheral surface of the column part 131, so as to seal between
  • part of the structure of the seal 15 is located between the top cover 11 and the flange portion 133, so that the flange portion 133 and the second convex ring 126 apply extrusion pressure to the two surfaces of the seal 15 in the thickness direction, so that the seal 15 fits tightly between the top cover 11 and the flange portion 133.
  • the inner circumferential surface of the seal 15 fits on the outer circumferential surface of the column portion 131, thereby improving the sealing performance of the seal 15 between the top cover 11, the column portion 131 and the flange portion 133.
  • the rivet 14 and the insulating member 12 are firmly and flatly installed on the side of the top cover 11 away from the flange portion 133, preventing the edges of the rivet 14 and the insulating member 12 from curling up, which would cause the sealing performance of the end cover assembly 10 to decrease after the sealing member 15 ages and hardens after long-term use, thereby preventing leakage of electrolyte.
  • the main body 124 includes a first division 1241 and a second division 1242, the first protrusion 122 is arranged on the second division 1242, the second division 1242 is arranged on the surface of the first division 1241 away from the top cover 11, the inner side wall of the second division 1242 is flush with the peripheral wall of the second through hole 121, the outer peripheral edge of the second division 1242 has a second arc surface 1243, and the first division 1241 and the second division 1242 both surround the second through hole 121; in the width direction of the insulating member 12, the width of the second division 1242 is smaller than the width of the first division 1241, and the width of the second division 1242 is larger than the width of the rivet 14.
  • the second section 1242 is stacked on one side of the first section 1241 close to the second through hole 121, and the width of the first section 1241 is greater than the width of the second section 1242, that is, the inner ring part of the insulating member 12 is thicker and the outer ring is thinner, and the outer peripheral edge of the second section 1242 has a second arc surface 1243, so that the outer peripheral edge of the second section 1242 transitions with the arc of the first section 1241, and the first section 1241 and the second section 1242 protruding from the top cover 11 are in a stepped tower shape that gradually increases from top to bottom.
  • the top patch When the top patch is attached later, it can be conveniently inserted from the upper surface of the poles 13 at both ends, and the positioning can be adjusted layer by layer to avoid excessive height difference between the first section 1241 and the second section 1242 protruding from the top cover 11, which causes interference and blocking when the top patch is inserted; at the same time, it is prevented that the outer peripheral edge of the body 124 is lifted up due to the pressure of riveting, which affects the subsequent process of attaching the top patch to the top cover 11.
  • the rivet 14 After the rivet 14 is sleeved on the column portion 131 , the rivet 14 abuts against the surface of the second portion 1242 away from the top cover 11 , and the width of the second portion 1242 is greater than the width of the rivet 14 , so that the rivet 14 is crimped to the body 124 over a larger area.

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  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

端盖组件(10)包括：顶盖(11)形成有第一通孔(111)；绝缘件(12)安装于顶盖(11)，绝缘件(12)的正投影为圆角矩形，多个第一凸部(122)设于第一表面(123)；柱体部(131)的正投影为圆角矩形，第二凸部(132)凸设于柱体部(131)的外周面并位于柱体部(131)凸出于第一表面(123)的一侧；压铆件(14)的正投影为圆角矩形，第一凸部(122)容置于第一凹槽(141)，压铆件(14)套设于柱体部(131)，柱体部(131)和绝缘件(12)通过压铆件(14)铆合固定于顶盖(11)，沿压铆件(14)的厚度方向，压铆件(14)位于绝缘件(12)和第二凸部(132)之间。

Description

端盖组件、储能装置及用电设备 技术领域
本申请涉及储能装置技术领域，尤其涉及一种端盖组件、储能装置及用电设备。
背景技术
在相关技术中，上塑胶件通过注塑成型，以实现端盖、极柱、密封件、及上塑胶件的装配，得到装配完成的端盖组件。但是，由于注塑成型的上塑胶件需要冷却，导致端盖组件的装配时间较长，装配效率较低。
发明内容
本申请提供一种端盖组件、储能装置及用电设备。
第一方面，本申请实施方式提供一种端盖组件，所述端盖组件包括顶盖、绝缘件、极柱和压铆件；所述顶盖形成有第一通孔；所述绝缘件安装于所述顶盖，所述绝缘件在垂直于所述绝缘件的厚度方向的平面上的正投影为圆角矩形，所述绝缘件包括第二通孔及多个第一凸部，所述第二通孔与所述第一通孔相对，所述多个第一凸部设于所述绝缘件的第一表面的拐角处，所述第一表面为所述绝缘件背离所述顶盖一侧的表面，所述多个第一凸部围绕所述第二通孔设置；所述极柱包括柱体部及第二凸部，所述柱体部在垂直于所述柱体部的厚度方向的平面上的正投影为圆角矩形，所述柱体部穿设所述第一通孔和所述第二通孔并凸出于所述第一表面，所述第二凸部凸设于所述柱体部的外周面并位于所述柱体部凸出于所述第一表面的一侧；所述压铆件在垂直于所述压铆件的厚度方向的平面上的正投影为圆角矩形，所述压铆件包括与所述多个第一凸部一一对应的多个第一凹槽，所述多个第一凹槽设于所述压铆件的第二表面的拐角处，所述第二表面为所述压铆件朝向所述绝缘件一侧的表面，所述第一凸部容置于所述第一凹槽内，所述压铆件套设于所述柱体部，所述柱体部和所述绝缘件通过所述压铆件铆合固定于所述顶盖，沿所述压铆件的厚度方向，所述压铆件位于所述绝缘件和所述第二凸部之间。
一种可能的实施方式，所述第一凸部设于所述第一表面靠近所述第二通孔的周壁的边沿处，所述压铆件包括第三通孔，所述第三通孔与所述第二通孔相对，所述第一凹槽设于所述第二表面靠近所述第三通孔的周壁的边沿处。
将第一凸部靠近第一表面位于第二通孔的周壁的边沿处，第一凹槽的设于第二表面靠近第三通孔的周壁的边沿处，第一凸部容置于第一凹槽内后，使得绝缘件与压铆件靠近第二通孔的周缘处能够稳固连接，有效避免绝缘件与压铆件位于第二通孔的四个拐角的抵接处翘起而影响柱体部与其他部件连接的密封性，防止储能装置出现漏液现象。
一种可能的实施方式，所述多个第一凸部呈对角分布设于所述第一表面，所述多个第一凹槽呈对角分布设于所述第二表面。
在绝缘件的四个拐角处均设有第一凸部，在压铆件的四个拐角处也均设有第一凹槽，且呈对角分布的第一凸部和第一凹槽能够有效压合压铆件与绝缘件的对角位置，防止压铆件与绝缘件的对角位置出现翘起，确保压合之后的压铆件与绝缘件较为平整，更好地提升端盖组件在柱体部处的密封性能，防止电解液漏液。另外，在保证压铆件与绝缘件能够紧密压合防止翘起的前提下，还能够有效减少第一凸部和第一凹槽的设置，有效节约成本。
一种可能的实施方式，所述第一凸部与所述第一凹槽适配，所述第一凸部包括相对的第一端部和第二端部，所述第一端部与所述第一表面抵接，所述第一凸部自所述第二端部在所述第二端部的辐射方向上朝向所述第一端部延伸形成，所述第一凸部包括依次连接的第一平面、第二平面和第一弧面，所述第一平面、所述第二平面和所述第一弧面的延伸方向互不相同，所述第一平面、所述第二平面和所述第一弧面围合成所述第一凸部的周面，所述第一弧面的底边与所述第二通孔的侧壁齐平，所述第一弧面的底边位于所述第一表面上，所述第一平面、所述第二平面和所述第一弧面背离所述第一表面的一端形成所述第二端部；所述压铆件包括第三通孔，所述第一凹槽与所述第三通孔连通。
第一凸部的第一端部呈类三角形，且第一凸部和第一凹槽适配，即，第一凹槽的侧壁与第一凸部的侧壁紧密贴合，第一凸部插设于第一凹槽内后，第一凸部的第二端部紧密贴合在第一凹槽的顶部，使得第一凸部能够稳定装配在第一凹槽内，且在绝缘件和柱体部通过压铆件压铆连接于顶盖上后，第一凸部能够稳定地限位于第一凹槽内，确保第一凸部和第一凹槽连接的稳定性，加强压铆件与绝缘件在拐角处的连接强度。
一种可能的实施方式，所述第一凸部沿垂直于所述绝缘件的厚度方向的平面截得的截面面积，在自所述第一端部至所述第二端部的方向上逐渐减小，所述第一凸部沿垂直于所述绝缘件的厚度方向的平面截得的截面的最小面积等于0。
在自第一端部至第二端部的方向上，第一凸部的截面面积依次减小，第一凹槽的侧壁围合的面积也依次减小，即，第一凸部呈尖峰式结构，第一凸部的外周壁与第一凹槽的周壁贴合，尖峰式结构的第一凸部能够沿第一凹槽的侧壁插接入第一凹槽内，可以起到导向作用，提升安装效率。且尖峰式结构的第一凸部容置于第一凹槽后，第一凸部能够稳定地装配在第一凹槽内，有效提高绝缘件与压铆件贴合的稳定性，提高端盖组件在柱体部的密封性。
一种可能的实施方式，所述第一凸部沿所述绝缘件的厚度方向的厚度大于所述第一凹槽沿所述压铆件的厚度方向的深度。
通过压铆件铆合前，绝缘件的四个拐角处高于绝缘件的平边处，在压铆时，绝缘件和压铆件的拐角处对应放置在柱体部的拐角处，使得柱体部的四个拐角处受到更能大的冲铆压力，柱体部的四个拐角处的形变量也更大，可以有余量填补柱体部拐角处的圆弧边之间的间隙。
一种可能的实施方式，所述压铆件包括与所述第二表面相背的第三表面，所述第一凹槽自所述第二表面朝向所述第三表面凹陷形成，并在所述第三表面形成有与所述第一凹槽相对的第三凸部。
由于压铆件的厚度较薄，难以在压铆件的拐角处冲铆出凹槽而不形成凸部，而在压铆件的拐角处自第二表面朝向第三表面凹陷形成第一凹槽，第三表面上凸起形成有与第一凹槽相对的第三凸部，也即是说，在压铆件的拐角处作折边处理，使得压铆件的制作过程简单。
一种可能的实施方式，所述极柱还包括法兰部，所述柱体部安装于所述法兰部，所述法兰部位于所述顶盖背离所述绝缘件的一侧，所述柱体部的第四表面形成有多个第四凸部，所述第四表面为所述柱体部背离所述法兰部一侧的表面，多个所述第四凸部凸出于所述第四表面并分别位于所述第四表面的拐角处。
柱体部在垂直于极柱的厚度方向的平面上的正投影为圆角矩形，即，柱体部的外周侧为圆角矩形，柱体部的四个拐角处形成有第四凸部，通过压铆件冲压柱体部时，压铆件可抵接在第四凸部上，使得柱体部冲压时有更大的形变量，从而使得柱体部的四个拐角处向外延伸变形的范围相较于柱体部的四个平边处向外延伸的范围更大，以更好地压合压铆件和绝缘件的四个拐角处，提供更大的压接强度，防止压铆件和绝缘件的拐角处出现翘起，进而提供更 好地密封性能。
一种可能的实施方式，所述第四凸部在所述柱体部的厚度方向上的最高点与所述第四表面之间的垂直距离为H，所述垂直距离H满足：0.05mm≤H≤2.45mm。
在柱体部冲压之前，若第四凸部在柱体部的厚度方向上的最高点与第四表面之间的垂直距离H小于0.05mm，通过压铆件冲压柱体部时，柱体部的四个拐角处形变量较少，向外延伸的范围较小，向外延伸的部分对压铆件和绝缘件的压接强度较低；若第四凸部在柱体部的厚度方向上的最高点与第四表面之间的垂直距离H大于2.45mm，第四凸部的高度过高，通过压铆件冲压柱体部时，柱体部的四个拐角处的形变量过大，向外延伸的范围过大，容易影响端盖组件中其他部件的安装，且通过压铆件冲压柱体部时需要更大的压力，冲压难度增加。通过将四凸部在柱体部的厚度方向上的最高点与第四表面之间的垂直距离H设置为大于等于0.05mm且小于等于2.45mm，通过压铆件冲压柱体部时，柱体部的四个拐角处具有较大的形变量，使得第四凸部受冲压后向外延伸的部分可以紧密地压合压铆件和绝缘件的四个拐角处，对压铆件提供更大的压接强度，进而提供更好的密封性能。
一种可能的实施方式，所述柱体部形成有多个凸耳，所述多个凸耳设于所述柱体部远离所述法兰部的一端的拐角处，在所述柱体部的周向上，所述第二凸部与所述多个凸耳连接。
压铆件铆接时，压铆件对柱体部的四个拐角处的第四凸部进行冲压，因第四凸部的高度高于柱体部的四个平边处的高度，柱体部的四个拐角处向外延伸变形的范围相较于柱体部的四个平边所在的侧壁向外变形延伸的范围要更大，压铆件铆接之后在柱体部的四个第四凸部位置处形成有四个凸耳，如此，对角位置处形成的四个凸耳能够可靠地压合绝缘件和压铆件的拐角位置，且，第二凸部与多个凸耳在周向上连接，第二凸部和多个凸耳共同对压铆件和绝缘件进行限位，更好地提升端盖组件的密封性能，防止电解液漏液。另外，四个凸耳压合之后使得压铆件和绝缘件较为平整不再翘曲，保证安装在顶盖上的顶帖片与顶盖的有效贴合。
一种可能的实施方式，所述凸耳的外边沿与所述柱体部的侧壁之间的距离大于所述第二凸部的外边沿与所述柱体部的侧壁之间的距离。
压铆件铆接时，因柱体部对角处的部分侧壁较厚且向外延伸变形的范围相较于柱体部的四个侧边所在的侧壁向外变形延伸的范围要更大，使得凸耳的外边沿与柱体部的侧壁之间的距离大于第二凸部的外边沿与柱体部的侧壁之间的距离，如此，凸耳能够更好地压接压铆件和绝缘件在拐角处的连接处，保证压铆件和绝缘件能够可靠地贴合在一起，提升端盖组件的密封性能。
一种可能的实施方式，所述绝缘件包括本体、第一凸环和第二凸环，所述本体设于所述顶盖，所述第一凸环设于所述本体朝向所述顶盖的一侧且位于所述第一通孔内，所述第二凸环设于所述第一凸环背离所述本体的一侧且位于所述第一通孔内，所述第一凸环的内侧壁面至所述第一通孔的周壁之间的间距大于所述第二凸环的内侧壁面至所述第一通孔的周壁之间的间距，所述第一凸环、所述第二凸环和所述本体围合形成所述第二通孔，所述端盖组件还包括密封件，所述密封件套设于所述柱体部并位于所述第一通孔内，所述第二凸环背离所述第一凸环一侧的表面抵持在所述密封件朝向所述顶盖一侧的表面，用于使所述密封件的内侧壁面抵持在所述柱体部的外周面。
装配极柱时，可将密封件套设于柱体部，再将极柱与密封件一起装配到顶盖上，其中，柱体部穿设第一通孔，并部分嵌入在第一凸环和第二凸环之间的间隙内，且第二凸环背离第一凸环一侧的表面抵持在密封件朝向顶盖一侧的表面，第二凸环能够沿柱体部的厚度方向上挤压密封件，给密封件沿柱体部的厚度方向的挤压力，以使密封件沿柱体部的径向产生形变 并抵持在柱体部的外周面，使得密封件能够紧密贴合在柱体部的外周面，以对柱体部的外周面和第一通孔的周壁之间进行密封。本申请中，通过第一凸部与第一凹槽的配合连接、以及第二凸部和凸耳的限位，将压铆件和绝缘件稳固且平整地安装于顶盖背离法兰部的一侧，防止压铆件与绝缘件的边缘翘起而导致端盖组件在长期使用下密封件老化变硬之后的密封性下降，防止电解液漏液。
一种可能的实施方式，所述本体包括第一分部和第二分部，所述第一凸部设于所述第二分部，所述第二分部设于所述第一分部背离所述顶盖一侧的表面，所述第二分部的内侧壁与所述第二通孔的周壁齐平，所述第二分部的外周沿具有第二弧面，所述第一分部和所述第二分部均环绕所述第二通孔；在所述绝缘件的宽度方向上，所述第一分部的宽度大于所述第二分部的宽度，所述第二分部的宽度大于所述压铆件的宽度。
第二分部堆叠在第一分部靠近第二通孔的一侧，且第一分部的宽度大于第二分部的宽度，即，绝缘件的内圈部分厚度较厚，外圈的厚度较薄，第二分部的外周沿具有第二弧面，使得第二分部的外周沿与第一分部圆弧过渡，且使凸出顶盖的第一分部和第二分部呈从上到下渐变大的阶梯式塔形，后续顶贴片贴附时，可以很方便地从两端的极柱上表面嵌入，逐层调整定位，避免凸出于顶盖的第一分部和第二分部层阶高度差过大，造成顶贴片套入时干涉卡止；同时，避免本体外周缘因铆合的压力而翘起，影响后续顶贴片贴附于顶盖的工序。压铆件套设于柱体部后，压铆件抵接在第二分部背离顶盖一侧的表面上，且第二分部的宽度大于压铆件的宽度，使得压铆件更大面积地压接本体。
第二方面，本申请实施方式提供一种储能装置，所述储能装置包括壳体、电极组件和如第一方面所述的端盖组件。所述壳体形成收容空间，所述收容空间具有开口。所述电极组件收容于所述收容空间。所述端盖组件盖合于所述开口，所述端盖组件还包括转接件，所述电极组件通过所述转接件与所述极柱电连接。
第三方面，本申请实施方式提供一种用电设备，所述用电设备包括如第二方面所述的储能装置，所述储能装置为所述用电设备供电。
本申请的端盖组件、储能装置及用电设备中，装配端盖组件时，将柱体部穿设第一通孔凸出于顶盖，然后将压铆件安装在绝缘件的第一表面，通过压铆冲压方式将绝缘件和压铆件固定连接于顶盖上，其中，柱体部穿设第一通孔和第二通孔并凸出于第一表面，无需在装配顶盖和极柱后等待绝缘件注塑成型的冷却时间，有效提高装配效率，提高端盖组件的量产效率。另外，压铆件加工成型过程中，压铆件的弧形拐角处难以完全适配柱体部的弧形拐角，压铆件与柱体部装配后，两者在弧形拐角处存在间隙，压铆件的四个平边处抵接在柱体部的四个平边处，压铆件在柱体部的上边沿进行冲压时，柱体部受压变形，在柱体部的四个拐角处先填充满压铆件与柱体部在拐角处的间隙，再沿柱体部的周向向外，在相同的冲铆压合深度的情况下，受压变形后的柱体部的四个拐角处对压铆件施加的压力，小于柱体部的四个平边处对压铆件施加的压力，通过在绝缘件的拐角处设有多个第一凸部，多个第一凸部沿绝缘件的厚度方向延伸，压铆件的第二表面的拐角处形成有与多个第一凸部一一对应且适配的多个第一凹槽，第一凸部容置于第一凹槽内，使得压铆件与绝缘件的连接处在拐角处能够紧密压合，防止压铆件和/或绝缘件在拐角处翘起，加强压铆件与绝缘件的连接稳定性，且压铆件位于绝缘件和第二凸部之间，第二凸部能够压紧压铆件的四个平边处，确保压铆件和绝缘件在周向上能够紧密压合，避免通过压铆件压铆连接之后，绝缘件或者压铆件翘起而影响端盖组件的密封性，避免出现电解液漏液现象。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍。
图1是本申请实施方式提供的一种储能系统的应用场景示意图；
图2是本申请实施方式提供的一种储能装置的立体结构示意图；
图3是本申请实施方式提供的一种端盖组件的立体分解结构示意图；
图4是本申请实施方式提供的一种端盖组件中的压铆件的立体结构示意图；
图5是图2所示的储能装置中的端盖组件沿V-V线的剖面示意图；
图6是图5所示的端盖组件中VI处的放大示意图；
图7是图4所示的压铆件中VII处的放大示意图；
图8是本申请实施方式提供的一种端盖组件中的绝缘件的立体结构示意图；
图9是图8所示的压铆件中IX处的放大示意图；
图10是本申请实施方式提供的一种端盖组件中的极柱未冲压前的剖面结构示意图。
附图标记：
端盖组件-10、顶盖-11、第一通孔-111、绝缘件-12、第二通孔-121、第一凸部-122、第一端部-1221、第二端部-1222、第一平面-1223、第二平面-1224、第一弧面-1225、第一表面-123、本体-124、第一分部-1241、第二分部-1242、第二弧面-1243、第一凸环-125、第二凸环-126、第一对角线-oo1、第二对角线-oo2、极柱-13、柱体部-131、第四表面-1311、凸耳-1312、第二凸部-132、法兰部-133、第四凸部-134、压铆件-14、第一凹槽-141、第二表面-142、第三通孔-143、第三表面-144、第三凸部-145、第三对角线-oo3、第四对角线-oo4、密封件-15、转接件-16、壳体-20、收容空间-21、开口-22、电极组件-30、储能装置-100、用电设备-1000、电能转换装置-2000、风能转换装置-3000、垂直距离-H。
具体实施方式
下面将结合本申请实施方式中的附图，对本申请实施方式中的技术方案进行清楚、完整地描述，显然，所描述的实施方式仅仅是本申请一部分实施方式，而不是全部的实施方式。基于本申请中的实施方式，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施方式，都属于本申请保护的范围。
以下各实施方式的说明是参考附加的图示，用以例示本申请可用以实施的特定实施方式。本中所提到的方向用语，例如，“上”、“下”、“前”、“后”、“左”、“右”、“内”、“外”、“侧面”等，仅是参考附加图式的方向，因此，使用的方向用语是为了更好、更清楚地说明及理解本申请，而不是指示或暗指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的限制。
此外，本文中为部件所编序号本身，例如“第一”、“第二”等，仅用于区分所描述的对象，不具有任何顺序或技术含义。而本申请所说“连接”、“联接”，如无特别说明，均包括直接和间接连接(联接)。
由于人们所需要的能源都具有很强的时间性和空间性，为了合理利用能源并提高能量的利用率，需要通过一种介质或者设备，把一种能量形式用同一种或者转换成另外一种能量形式存储起来，基于未来应用需要再以特定能量形式释放出来。目前绿色电能的产生普遍依赖 于光伏、风电、水势等，而风能和太阳能等普遍存在间歇性强、波动性大的问题，会造成电网不稳定，用电高峰电不够，用电低谷电太多，不稳定的电压还会对电力造成损害，因此可能因为用电需求不足或电网接纳能力不足，引发“弃风弃光”问题，要解决这些问题须依赖储能。即将电能通过物理或者化学的手段转化为其他形式的能量存储起来，在需要的时候将能量转化为电能释放出来，简单来说，储能就类似一个大型“充电宝”，在光伏、风能充足时，将电能储存起来，在需要时释放储能的电力。
以电化学储能为例，本方案提供一种储能装置100，储能装置100内设有一组化学电池，主要是利用化学电池内的化学元素做储能介质，充放电过程伴随储能介质的化学反应或者变化，简单说就是把风能和太阳能产生的电能存在化学电池中，在外部电能的使用达到高峰时再将存储的电量释放出来使用，或者转移给电量紧缺的地方再使用。
目前的储能(即能量存储)应用场景较为广泛，包括(风光)发电侧储能、电网侧储能、基站侧储能以及用户侧储能等方面，对应的储能装置100的种类包括有：
(1)应用在电网侧储能场景的大型储能集装箱，其可作为电网中优质的有功无功调节电源，实现电能在时间和空间上的负荷匹配，增强可再生能源消纳能力，并在电网系统备用、缓解高峰负荷供电压力和调峰调频方面意义重大。
(2)应用在用户侧的工商业储能场景(银行、商场等)的中小型储能电柜，主要运行模式为“削峰填谷”。由于根据用电量需求在峰谷位置的电费存在较大的价格差异，用户有储能设备后，为了减少成本，通常在电价低谷期，对储能柜/箱进行充电处理；电价高峰期，再将储能设备中的电放出来进行使用，以达到节省电费的目的。
如图1所示，本申请实施例提供的储能装置100应用于一种储能系统，该储能系统包括电能转换装置2000(光伏板)、风能转换装置3000(风机)、用电设备1000(电网)、以及储能装置100，储能系统还包括储能柜，该储能装置100安装于储能柜，可以安装于室外。具体的，光伏板可以在电价低谷时期将太阳能转换为电能，储能装置100用于储存该电能并在电价高峰时供给电网，或者在电网断电/停电时进行供电。风能转换装置3000(风机)可以将风能转换为电能，储能装置100用于储存该电能并在电价高峰时供给电网，或者在电网断电/停电时进行供电。其中，电能的传输可以采用高压线缆进行传输。
储能装置100的数量可以为数个，数个储能装置100相互串联或并联，数个储能装置100采用隔离板(图未示)进行支撑及电连接。本实施例中，“数个”是指两个及两个以上。储能装置100外部还可以设有储能箱，用于收容储能装置100。
可以理解的是，储能装置100可包括但不限于单体电池、电池模组、电池包、电池系统等。本申请实施例提供的储能装置100的实际应用形态可以为但不限于为所列举产品，还可以是其他应用形态，本申请实施例不对储能装置100的应用形态做严格限制。本申请实施例仅以储能装置100为多芯电池为例进行说明。
请结合图5，储能装置100包括壳体20、电极组件30和本申请实施方式提供的端盖组件10，壳体20形成有收容空间21，收容空间21具有开口22。电极组件30收容于收容空间21，端盖组件10盖合于开口22，端盖组件10还包括转接件16，电极组件30通过转接件16与极柱13电连接。
其中，转接件16的一端与电极组件30连接，转接件16的另一端与极柱13的法兰部133连接，从而实现电极组件30与极柱13的电连接。
可以理解，本申请提供的储能系统还可以是户用储能系统。
本申请提供的用电设备1000包括但不限于电网、基站等用电设备1000。
请参阅图2、图3和图4，本申请实施方式提供一种端盖组件10，端盖组件10应用于储能装置100。端盖组件10包括顶盖11、绝缘件12、极柱13和压铆件14，顶盖11形成有第一通孔111。绝缘件12安装于顶盖11，绝缘件12在垂直于绝缘件12的厚度方向的平面上的正投影为圆角矩形，绝缘件12包括第二通孔121及多个第一凸部122，第二通孔121与第一通孔111相对，多个第一凸部122设于绝缘件12的第一表面123的拐角处，第一表面123为绝缘件12背离顶盖11一侧的表面，多个第一凸部122围绕第二通孔121设置。极柱13包括柱体部131及第二凸部132，柱体部131在垂直于柱体部131的厚度方向的平面上的正投影为圆角矩形，柱体部131穿设第一通孔111和第二通孔121并凸出于第一表面123，第二凸部132设于柱体部131的外周面并位于柱体部131凸出于第一表面123的一侧。压铆件14在垂直于压铆件14的厚度方向的平面上的正投影为圆角矩形，压铆件14包括与多个第一凸部122一一对应的多个第一凹槽141，多个第一凹槽141设于压铆件14的第二表面142的拐角处，第二表面142为压铆件14朝向绝缘件12一侧的表面，第一凸部122容置于第一凹槽141内，压铆件14套设于柱体部131，柱体部131和绝缘件12通过压铆件14铆合固定于顶盖11，沿压铆件14的厚度方向，压铆件14位于绝缘件12和第二凸部132之间。
需要说明的是，本申请提及的某一部件的厚度方向为如图3所示的第一方向A，某一部件的宽度方向和径向相同，为如图3所示的极柱13上开设的圆孔的径向。
请结合图6，本申请中，装配端盖组件10时，将柱体部131穿设第一通孔111凸出于顶盖11，然后将压铆件14安装在绝缘件12的第一表面123，通过压铆冲压方式将绝缘件12和压铆件14固定连接于顶盖11上，其中，柱体部131穿设第一通孔111和第二通孔121并凸出于第一表面123，无需在装配顶盖11和极柱13后等待绝缘件12注塑成型的冷却时间，有效提高装配效率，提高端盖组件10的量产效率。另外，压铆件14加工成型过程中，压铆件14的弧形拐角处难以完全适配柱体部131的弧形拐角，压铆件14与柱体部131装配后，两者在弧形拐角处存在间隙，压铆件14的四个平边处抵接在柱体部131的四个平边处，压铆件14在柱体部131的上边沿进行冲压时，柱体部131受压变形，在柱体部131的四个拐角处先填充满压铆件14与柱体部131在拐角处的间隙，再沿柱体部131的周向向外，在相同的冲铆压合深度的情况下，受压变形后的柱体部131的四个拐角处对压铆件14施加的压力，小于柱体部131的四个平边处对压铆件14施加的压力，通过在绝缘件12的第一表面123的拐角处设有多个第一凸部122，多个第一凸部122沿绝缘件12的厚度方向延伸，压铆件14的第二表面142的拐角处形成有与多个第一凸部122一一对应的多个第一凹槽141，第一凸部122容置于第一凹槽141内，使得压铆件14与绝缘件12的连接处在拐角处上能够紧密压合，防止压铆件14和/或绝缘件12的拐角处翘起，加强压铆件14与绝缘件12的连接稳定性，且压铆件14位于绝缘件12和第二凸部132之间，第二凸部132能够压紧对压铆件14的四个平边处，确保压铆件14和绝缘件12在周向上能够紧密压合，避免通过压铆件14压铆连接之后，绝缘件12或者压铆件14翘起而影响端盖组件10的密封性，避免出现电解液漏液现象。
其中，第一表面123可以是绝缘件12在厚度方向上最远离顶盖11的一个表面。第一通孔111与第二通孔121相对指的是：绝缘件12在绝缘件12的厚度方向上层叠设置于顶盖11上时，第一通孔111和第二通孔121在绝缘件12的厚度方向上相对，第一通孔111和第二通孔121的尺寸大小相同。
其中，第一通孔111、第二通孔121和压铆件14的第三通孔143的形状均是圆角矩形，为方便使压铆件14套接于柱体部131背离顶盖11的一端，压铆件14的第三通孔143的大小略大于柱体部131，并且，由于金属材料硬度不同(柱体部131为铝，压铆件14为钢)，加 工柱体部131和压铆件14时，柱体部131的拐角的圆弧度和压铆件14的第三通孔143的拐角处的圆弧度很难完全适配，大多数情况是，将压铆件14套设于柱体部131上时，柱体部131的四个拐角处于第三通孔143的四个拐角处有细微间隙，压铆件14的四个平边处基本抵接在柱体部131的四个平边处。
示例地，压铆件14安装于绝缘件12的第一表面123上的情况下，压铆件14与绝缘件12在绝缘件12的厚度方向上层叠设置，其中，绝缘件12在垂直于绝缘件12厚度方向的平面上的正投影面积大于压铆件14在垂直于压铆件14厚度方向的平面上的正投影面积，如此，保证顶盖11与压铆件14之间绝缘，提高储能装置100的安全性。
请结合图7和图8，示例地，第一凸部122设于第一表面123靠近第二通孔121的周壁的边沿处，压铆件14包括第三通孔143，第三通孔143与第二通孔121相对，第一凹槽141设于第二表面142靠近第三通孔143的周壁的边沿处。
可以理解，第三通孔143与第一通孔111、第二通孔121均相对，柱体部131和绝缘件12通过压铆件14压铆连接于顶盖11上后，压铆件14套设于柱体部131的外周面，且在压铆件14的厚度方向上，压铆件14位于绝缘件12和第二凸部132之间。
柱体部131穿设第一通孔111、第二通孔121、和第三通孔143，柱体部131与第一通孔111的周壁、第二通孔121的周壁以及第三通孔143的周壁均贴合，以减小柱体部131与绝缘件12之间的间隙、及柱体部131与压铆件14的之间的间隙，保证柱体部131、绝缘件12和压铆件14之间的密封性。将第一凸部122靠近第一表面123位于第二通孔121的周壁的边沿处，第一凹槽141设于第二表面142靠近第三通孔143的周壁的边沿处，第一凸部122容置于第一凹槽141内后，使得绝缘件12与压铆件14靠近第二通孔121的周缘处能够稳固连接，有效避免绝缘件12与压铆件14位于第二通孔121的周缘的抵接处翘起而影响柱体部131与其他部件连接的密封性，防止储能装置100出现漏液现象。
示例地，多个第一凸部122呈对角分布设于第一表面123，多个第一凹槽141呈对角分布设于第二表面142。
请结合图4和图8，在绝缘件12的第一对角线oo1上分别设有两个第一凸部122，在绝缘件12的第二对角线oo2上分别设有两个第一凸部122，同样地，在压铆件14的第三对角线oo3上分别设有两个第一凹槽141，在压铆件14的第四对角线oo4上分别设有两个第一凹槽141，压铆件14安装于绝缘件12的第一表面123的情况下，第一对角线oo1和第三对角线oo3位于同一平面内且互相平行，第二对角线oo2和第四对角线oo4位于同一平面内且互相平行。
呈对角分布的第一凸部122和第一凹槽141能够有效压合压铆件14与绝缘件12的对角位置，防止压铆件14与绝缘件12的对角位置出现翘起，确保压合之后的压铆件14与绝缘件12较为平整，更好地提升端盖组件10在柱体部131处的密封性能，防止电解液漏液。另外，在保证压铆件14与绝缘件12能够紧密压合防止翘起的前提下，还能够有效减少第一凸部122和第一凹槽141的设置，有效节约成本。
其中，第一对角线oo1连接第一表面123的两个拐角，第二对角线oo2第一表面123的另两个拐角，第三对角线oo3连接压铆件14朝向绝缘件12的一表面的两个拐角，第三对角线oo3连接压铆件14朝向绝缘件12的一表面的另两个拐角。
请结合图7和图9，其中，第一凸部122与第二通孔121的周壁的连接处在第一表面123的拐角处为圆弧过渡。
在绝缘件12的各个拐角处均设置有一第一凸部122，压铆件14的各个拐角处均设有一 与第一凸部122适配的第一凹槽141，在柱体部131通过压铆件14压铆连接过程中，防止压铆件14和/或绝缘件12翘起而导致端盖组件10在柱体部131连接处的密封性下降，防止电解液漏液。
请结合图9，示例地，第一凸部122和第一凹槽141适配，第一凸部122包括相对的第一端部1221和第二端部1222，第一端部1221与第一表面123抵接，第一凸部122自第二端部1222在第二端部1222的辐射方向上朝向第一端部1221延伸形成，第一凸部122包括依次连接的第一平面1223、第二平面1224和第一弧面1225，第一平面1223、第二平面1224和第一弧面1225的延伸方向互不相同，第一平面1223、第二平面1224和第一弧面1225围合成第一凸部122的周面，第一弧面1225的底边与第二通孔121的侧壁齐平，第一弧面1225的底边位于第一表面123上，第一平面1223、第二平面1224和第一弧面1225背离第一表面123的一端形成第二端部1222；第一凹槽141与第三通孔143连通。
其中，第一平面1223和第二平面1224连接处的棱边与第一弧面1225相对，且第一平面1223和第二平面1224位于第一表面123上的连接处与第一表面123远离第二通孔121的外边缘之间存在间隙。
第一凸部122与第一凹槽141适配指的是，第一凸部122的形状与第一凹槽141的形状相同，第一凸部122能够沿第一凹槽141的侧壁插设于第一凹槽141内，且第一平面1223和第二平面1224均与第一凹槽141的侧壁抵接。
第一凸部122的第一端部1221呈类三角形(其中第一弧面1225的底边为弧边)，且第一凸部122和第一凹槽141适配，即，第一凹槽141的侧壁与第一凸部122的侧壁紧密贴合，第一凸部122插设于第一凹槽141内后，第一凸部122能够稳定装配在第一凹槽141内，且在绝缘件12和柱体部131通过压铆件14压铆连接于顶盖11上后，第一凸部122能够稳定地限位于第一凹槽141内，确保第一凸部122和第一凹槽141连接的稳定性，加强压铆件14与绝缘件12在拐角处的连接强度。
进一步地，第一凸部122沿垂直于绝缘件12的厚度方向的平面截得的截面面积，在自第一端部1221至第二端部1222的方向上逐渐减小，第一凸部122沿垂直于绝缘件12的厚度方向的平面截得的截面的最小面积等于0。
换而言之，第一凸部122沿对角线(如第一对角线oo1或第二对角线oo2)延伸的宽度在自第一端部1221至第二端部1222的方向上逐渐减小，是第一凹槽141沿对角线(如第三对角线oo3或第四对角线oo4)延伸的宽度在自第一端部1221至第二端部1222的方向上逐渐减小。
在自第一端部1221至第二端部1222的方向(如图9所示的第二方向B)上，第一凸部122的截面面积依次减小，第一凹槽141的侧壁围合的面积也依次减小，即，第一凸部122呈尖峰式结构，第一凸部122的外周壁与第一凹槽141的周壁贴合，尖峰式结构的第一凸部122能够沿第一凹槽141的侧壁插接入第一凹槽141内，可以起到导向作用，提升安装效率。且尖峰式结构的第一凸部122插设于第一凹槽141后，第一凸部122能够稳定地转配在第一凹槽141内，有效提高绝缘件12与压铆件14贴合的稳定性，提高端盖组件10在柱体部131的密封性。
第一凸部122沿绝缘件12的厚度方向的厚度大于第一凹槽141沿压铆件14的厚度方向的深度。
其中，第一凸部122呈尖峰式结构，第一平面1223和第二平面1224的连接处所在的棱边的高度大于第一凹槽141中与该棱边对应位置的深度。该棱边的高度与第一凹槽141中与 该棱边对应位置处的深度之间的差值大于等于0.01mm且小于等于0.15mm，避免该棱边的高度与第一凹槽141中对应位置处的深度之间的差值过大或过小，确保第一凸部122与第一凹槽141能够紧密贴合，同时，降低压铆件14的铆合难度。
通过压铆件14铆合前，绝缘件12的四个拐角处高于绝缘件12的平边处，在压铆时，绝缘件12和压铆件14的拐角处对应放置在柱体部131的拐角处，使得柱体部131的四个拐角处受到更大的冲铆压力，柱体部131的四个拐角处的形变量也更大，可以有余量填补柱体部131拐角处的圆弧边之间的间隙。
示例地，第一凸部122可以呈矩形结构，且第一凸部122朝向第二通孔121一侧的侧壁与第二通孔121的周壁齐平，即，矩形结构的第一凸部122朝向第二通孔121一侧的侧壁为弧形侧壁。
在第一对角线oo1上的两个第一凸部122中，第一凸部122在第一对角线oo1上相对的两个表面分别位于第一表面123在第一对角线oo1上相对的两个边沿处；在第二对角线oo2上的两个第一凸部122的分布情况与在第一对角线oo1上的两个第一凸部122的分布情况类似，不再赘述。类似地，在第三对角线oo3上的两个第一凹槽141中，第一凹槽141在第三对角线oo3上的两个表面分别位于第二表面142在第三对角线oo3上相对的两个边沿处，在第四对角线oo4上的两个第一凹槽141的分布情况与在第三对角线oo3上的两个第一凹槽141的分布情况类似，不再赘述。
矩形结构的第一凸部122和第一凹槽141，制作工艺简单，可有效提高端盖组件10量产效率。
压铆件14包括与第二表面142相背的第三表面144，第一凹槽141自第二表面142朝向第三表面144凹陷形成，并在第三表面144形成有与第一凹槽141相对的第三凸部145。
由于压铆件14的厚度较薄，且压铆件14采用钢材料制成，难以在压铆件14的拐角处冲铆出凹槽而不在压铆件14凸出形成有凸部，而在压铆件14的拐角处自第二表面142朝向第三表面144凹陷形成第一凹槽141，第三表面144上凸起形成有与第一凹槽141相对的第三凸部145，也即是说，在压铆件14的拐角处作折边处理，使得压铆件14的制作过程简单。
请结合图6和图10，示例地，极柱13还包括法兰部133，柱体部131安装于法兰部133，法兰部133位于顶盖11背离绝缘件12的一侧，柱体部131的第四表面1311形成有多个第四凸部134，第四表面1311为柱体部131背离法兰部133一侧的表面，多个第四凸部134凸出于第四表面1311，并分别位于第四表面1311的拐角处。
其中，在极柱13未经过压铆件14铆合固定之前，柱体部131的第四表面1311形成有多个第四凸部134。
可以理解，柱体部131凸设于法兰部133上，可以为，柱体部131及法兰部133依次设置，且沿垂直于柱体部131、法兰部133的排列方向的方向上(即极柱13的厚度方向上)，法兰部133凸出于柱体部131的外周设置。
柱体部131在垂直于极柱13的厚度方向的平面上的正投影为圆角矩形，即，柱体部131的外周侧为圆角矩形，柱体部131的四个拐角处形成有第四凸部134，通过压铆件14冲压柱体部131时，压铆件14可抵接在第四凸部134上，使得柱体部131冲压时有更大的形变量，从而使得柱体部131的四个拐角处向外延伸变形的范围相较于柱体部131的四个平边处向外延伸的范围更大，以更好地压合压铆件14和绝缘件12的四个拐角处，提供更大的压接强度，防止压铆件14和绝缘件12的拐角处出现翘起，进而提供更好地密封性能。
其中，柱体部131的四个平边所在的侧壁受压向外延伸并形成第二凸部132，第二凸部 132抵接在压铆件14的平边处，以将压铆件14和绝缘件12的四个平边处限位在顶盖11与第二凸部132之间，防止压铆件14和绝缘件12的四个平边处翘起。
示例地，第四凸部134在柱体部131的厚度方向上的最高点与第四表面1311之间的垂直距离为H，H满足：0.05mm≤H≤2.45mm。
在柱体部131冲压之前，若第四凸部134在柱体部131的厚度方向上的最高点与第四表面1311之间的垂直距离H小于0.05mm，通过压铆件14冲压柱体部131时，柱体部131的四个拐角处形变量较少，向外延伸的范围较小，向外延伸的部分对压铆件14和绝缘件12的压接强度较低；若第四凸部134在柱体部131的厚度方向上的最高点与第四表面1311之间的垂直距离H大于2.45mm，第四凸部134的高度过高，通过压铆件14冲压柱体部131时，柱体部131的四个拐角处的形变量过大，向外延伸的范围过大，容易影响端盖组件10中其他部件的安装，且通过压铆件14冲压柱体部131时需要更大的压力，冲压难度增加。通过将第四凸部134在柱体部131的厚度方向上的最高点与第四表面1311之间的垂直距离设置为大于等于0.05mm且小于等于2.45mm，通过压铆件14冲压柱体部131时，柱体部131的四个拐角处具有较大的形变量，使得第四凸部134受冲压后向外延伸的部分可以紧密压合压铆件14与绝缘件12的四个拐角处，对压铆件14提供更大的压接强度，进而提供更好的密封性能，同时，还能够有效降低压接难度，提升端盖组件10的装配效率。
示例地，柱体部131形成有多个凸耳1312，多个凸耳1312设于柱体部131远离法兰部133的一端的拐角处，在柱体部131的周向上，第二凸部132与多个凸耳1312连接。
压铆件14铆接时，压铆件14对柱体部131的四个拐角处的第四凸部134进行冲压，因第四凸部134的高度高于柱体部131的平边处的高度，柱体部131的四个拐角处向外延伸变形的范围相较于柱体部131的四个平边所在的侧壁向外变形延伸的范围要更大，压铆件14铆接之后在柱体部131的四个拐角处形成有四个凸耳1312，其中，第四凸部134与第四表面1311齐平，如此，对角位置处形成的四个凸耳1312能够可靠地压合绝缘件12和压铆件14的拐角位置，且，第二凸部132与多个凸耳1312在周向上连接，第二凸部132和多个凸耳1312共同对压铆件14和绝缘件12进行限位，更好地提升端盖组件10的密封性能，防止电解液漏液。另外，四个凸耳1312压合之后使得压铆件14和绝缘件12较为平整不再翘曲，保证安装在顶盖11上的顶帖片与顶盖11的有效贴合。
示例地，凸耳1312的外边沿与柱体部131的侧壁之间的距离大于第二凸部132的外边沿与柱体部131的侧壁之间的距离。
其中，凸耳1312的外边沿为凸耳1312远离柱体部131的外周面的边沿，同样地，第二凸部132的外边沿为第二凸部132远离柱体部131的外周面的边沿。凸耳1312的外边沿到柱体部131上与凸耳1312对应的外周面(即柱体部131的拐角处的外周面)之间的距离，大于第二凸部132的外边沿到柱体部131与第二凸部132对应的外周面(即，柱体部131的平边处的外周面)之间的距离。
压铆件14铆接时，因柱体部131对角处的部分侧壁较厚且向外延伸变形的范围相较于柱体部131的四个侧边所在的侧壁向外变形延伸的范围要更大，使得凸耳1312的外边沿与柱体部131的侧壁之间的距离大于第二凸部132的外边沿与柱体部131的侧壁之间的距离，如此，凸耳1312能够更好地压接压铆件14和绝缘件12在拐角处的连接处，保证压铆件14和绝缘件12能够可靠地贴合在一起，提升端盖组件10的密封性能。
请结合图3和图6，示例地，绝缘件12包括本体124、第一凸环125和第二凸环126，本体124设于顶盖11，第一凸环125设于本体124朝向顶盖11的一侧且位于第一通孔111 内，第二凸环126设于第一凸环125背离本体124的一侧且位于第一通孔111内，第一凸环125的内侧壁面至第一通孔111的周壁之间的间距大于第二凸环126的内侧壁面至第一通孔111的周壁之间的间距，第一凸环125、第二凸环126和本体124围合形成第二通孔121。端盖组件10还包括密封件15，密封件15套设于柱体部131并位于第一通孔111内，第二凸环126背离第一凸环125一侧的表面抵持在密封件15朝向顶盖11一侧的表面，用于使密封件15的内侧壁面抵持在柱体部131的外周面。
第二凸环126设于第一凸环125靠近第一通孔111的周壁一侧的边沿处，第二凸环126与柱体部131之间具有间隙。第一凸环125的外周壁和第二凸环的外周壁均抵接在第一通孔111的周壁上。
装配极柱13时，可将密封件15套设于柱体部131，再将极柱13与密封件15一起装配到顶盖11上，其中，柱体部131穿设第一通孔111，并使密封件15的部分结构嵌入第一通孔111，并部分嵌入在柱体部131的外周面和第二凸环126之间的间隙内，且第二凸环126背离第一凸环125一侧的表面抵持在密封件15朝向顶盖11一侧的表面，第二凸环126能够沿柱体部131的厚度方向上挤压密封件15，给密封件15沿柱体部131的厚度方向的挤压力，以使密封件15沿柱体部131的径向产生形变并抵持在柱体部131的外周面，使得密封件15紧密贴合在柱体部131的外周面，以对柱体部131和第一通孔111的周壁之间进行密封。
其中，密封件15的部分结构位于顶盖11和法兰部133之间，使得法兰部133和第二凸环126对密封件15在厚度方向上的两个表面施加挤压力，使得密封件15紧密贴合在顶盖11和法兰部133之间，同时，使得密封件15的内周面贴合在柱体部131的外周面上，提升密封件15对顶盖11、柱体部131和法兰部133之间的密封性能。
本申请中，通过第一凸部122与第一凹槽141的配合连接、以及第二凸部132和凸耳1312的限位，将压铆件14和绝缘件12稳固且平整地安装于顶盖11背离法兰部133的一侧，防止压铆件14与绝缘件12的边缘翘起而导致端盖组件10在长期使用下密封件15老化变硬之后的密封性下降，防止电解液漏液。
示例地，本体124包括第一分部1241和第二分部1242，第一凸部122设于第二分部1242，第二分部1242设于第一分部1241背离顶盖11一侧的表面，第二分部1242的内侧壁与第二通孔121的周壁齐平，第二分部1242的外周沿具有第二弧面1243，第一分部1241和第二分部1242均环绕第二通孔121；在绝缘件12的宽度方向上，第二分部1242的宽度小于第一分部1241的宽度，第二分部1242的宽度大于压铆件14的宽度。
第二分部1242堆叠在第一分部1241靠近第二通孔121的一侧，且第一分部1241的宽度大于第二分部1242的宽度，即，绝缘件12的内圈部分厚度较厚，外圈的厚度较薄，第二分部1242的外周沿具有第二弧面1243，使得第二分部1242的外周沿与第一分部1241圆弧过渡，且使凸出顶盖11的第一分部1241和第二分部1242呈从上到下逐渐变大的阶梯式塔形，后续顶贴片贴附时，可以很方便地从两端的极柱13上表面套入，逐层调整定位，避免凸出于顶盖11的第一分部1241和第二分部1242层阶高度差过大，造成顶贴片套入时干涉卡止；同时，避免本体124外周缘因铆合的压力而翘起，影响后续顶贴片贴附于顶盖11的工序。压铆件14套设于柱体部131后，压铆件14抵接在第二分部1242背离顶盖11一侧的表面上，且第二分部1242的宽度大于压铆件14的宽度，使得压铆件14更大面积地压接本体124。
以上是本申请的部分实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本申请原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本申请的保护范围。

Claims (15)

  1. 一种端盖组件，其中，包括：
    顶盖，形成有第一通孔；
    绝缘件，安装于所述顶盖，所述绝缘件在垂直于所述绝缘件的厚度方向的平面上的正投影为圆角矩形，所述绝缘件包括第二通孔及多个第一凸部，所述第二通孔与所述第一通孔相对，所述多个第一凸部设于所述绝缘件的第一表面的拐角处，所述第一表面为所述绝缘件背离所述顶盖一侧的表面，所述多个第一凸部围绕所述第二通孔设置；
    极柱，包括柱体部及第二凸部，所述柱体部在垂直于所述柱体部的厚度方向的平面上的正投影为圆角矩形，所述柱体部穿设所述第一通孔和所述第二通孔并凸出于所述第一表面，所述第二凸部凸设于所述柱体部的外周面并位于所述柱体部凸出于所述第一表面的一侧；
    压铆件，所述压铆件在垂直于所述压铆件的厚度方向的平面上的正投影为圆角矩形，所述压铆件包括与所述多个第一凸部一一对应的多个第一凹槽，所述多个第一凹槽设于所述压铆件的第二表面的拐角处，所述第二表面为所述压铆件朝向所述绝缘件一侧的表面，所述第一凸部容置于所述第一凹槽内，所述压铆件套设于所述柱体部，所述柱体部和所述绝缘件通过所述压铆件铆合固定于所述顶盖，沿所述压铆件的厚度方向，所述压铆件位于所述绝缘件和所述第二凸部之间。
  2. 根据权利要求1所述的端盖组件，其中，所述第一凸部设于所述第一表面靠近所述第二通孔的周壁的边沿处，所述压铆件包括第三通孔，所述第三通孔与所述第二通孔相对，所述第一凹槽设于所述第二表面靠近所述第三通孔的周壁的边沿处。
  3. 根据权利要求1或2所述的端盖组件，其中，所述多个第一凸部呈对角分布设于所述第一表面，所述多个第一凹槽呈对角分布设于所述第二表面。
  4. 根据权利要求1-3任一项所述的端盖组件，其中，所述第一凸部与所述第一凹槽适配，所述第一凸部包括相对的第一端部和第二端部，所述第一端部与所述第一表面抵接，所述第一凸部自所述第二端部在所述第二端部的辐射方向上朝向所述第一端部延伸形成，所述第一凸部包括依次连接的第一平面、第二平面和第一弧面，所述第一平面、所述第二平面和所述第一弧面的延伸方向互不相同，所述第一平面、所述第二平面和所述第一弧面围合成所述第一凸部的周面，所述第一弧面的底边与所述第二通孔的侧壁齐平，所述第一弧面的底边位于所述第一表面上，所述第一平面、所述第二平面和所述第一弧面背离所述第一表面的一端形成所述第二端部；所述压铆件包括第三通孔，所述第一凹槽与所述第三通孔连通。
  5. 根据权利要求4所述的端盖组件，其中，所述第一凸部沿垂直于所述绝缘件的厚度方向的平面截得的截面面积，在自所述第一端部至所述第二端部的方向上逐渐减小，所述第一凸部沿垂直于所述绝缘件的厚度方向的平面截得的截面的最小面积等于0。
  6. 根据权利要求1-5任一项所述的端盖组件，其中，所述第一凸部沿所述绝缘件的厚度方向的厚度大于所述第一凹槽沿所述压铆件的厚度方向的深度。
  7. 根据权利要求1-6任一项所述的端盖组件，其中，所述压铆件包括与所述第二表面相背的第三表面，所述第一凹槽自所述第二表面朝向所述第三表面凹陷形成，并在所述第三表面形成有与所述第一凹槽相对的第三凸部。
  8. 根据权利要求1-7任一项所述的端盖组件，其中，所述极柱还包括法兰部，所述柱体部安装于所述法兰部，所述法兰部位于所述顶盖背离所述绝缘件的一侧，所述柱体部的第四表面形成有多个第四凸部，所述第四表面为所述柱体部背离所述法兰部一侧的表面，多个所述第四凸部凸出于所述第四表面并分别位于所述第四表面的拐角处。
  9. 根据权利要求8所述的端盖组件，其中，所述第四凸部在所述柱体部的厚度方向上的最高点与所述第四表面之间的垂直距离为H，所述垂直距离H满足：0.05mm≤H≤2.45mm。
  10. 根据权利要求8或9所述的端盖组件，其中，所述柱体部形成有多个凸耳，所述多个凸耳设于所述柱体部远离所述法兰部的一端的拐角处，在所述柱体部的周向上，所述第二凸部与所述多个凸耳连接。
  11. 根据权利要求10所述的端盖组件，其中，所述凸耳的外边沿与所述柱体部的侧壁之间的距离大于所述第二凸部的外边沿与所述柱体部的侧壁之间的距离。
  12. 根据权利要求1-11任一项所述的端盖组件，其中，所述绝缘件包括本体、第一凸环和第二凸环，所述本体设于所述顶盖，所述第一凸环设于所述本体朝向所述顶盖的一侧且位于所述第一通孔内，所述第二凸环设于所述第一凸环背离所述本体的一侧且位于所述第一通孔内，所述第一凸环的内侧壁面至所述第一通孔的周壁之间的间距大于所述第二凸环的内侧壁面至所述第一通孔的周壁之间的间距，所述第一凸环、所述第二凸环和所述本体围合形成所述第二通孔，所述端盖组件还包括密封件，所述密封件套设于所述柱体部并位于所述第一通孔内，所述第二凸环背离所述第一凸环一侧的表面抵持在所述密封件朝向所述顶盖一侧的表面，用于使所述密封件的内侧壁面抵持在所述柱体部的外周面。
  13. 根据权利要求12所述的端盖组件，其中，所述本体包括第一分部和第二分部，所述第一凸部设于所述第二分部，所述第二分部设于所述第一分部背离所述顶盖一侧的表面，所述第二分部的内侧壁与所述第二通孔的周壁齐平，所述第二分部的外周沿具有第二弧面，所述第一分部和所述第二分部均环绕所述第二通孔；在所述绝缘件的宽度方向上，所述第二分部的宽度小于所述第一分部的宽度，所述第二分部的宽度大于所述压铆件的宽度。
  14. 一种储能装置，其中，包括：
    壳体，形成收容空间，所述收容空间具有开口；
    电极组件，收容于所述收容空间；
    如权利要求1-13任一项所述的端盖组件，所述端盖组件盖合于所述开口，所述端盖组件还包括转接件，所述电极组件通过所述转接件与所述极柱电连接。
  15. 一种用电设备，其中，包括如权利要求14所述的储能装置，所述储能装置为所述用 电设备供电。
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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160141588A1 (en) * 2014-11-19 2016-05-19 Samsung Sdi Co., Ltd Secondary battery
CN212161873U (zh) * 2020-06-30 2020-12-15 蜂巢能源科技有限公司 一种复合铆环、电池盖板及电池
CN212161872U (zh) * 2020-06-30 2020-12-15 蜂巢能源科技有限公司 一种电池盖板及电池
CN112290133A (zh) * 2020-11-18 2021-01-29 江西百思利新能源科技股份有限公司 二次电池顶盖及其组装方法，及二次电池
CN213546427U (zh) * 2020-12-16 2021-06-25 上海兰钧新能源科技有限公司 顶盖结构及电池
CN213989020U (zh) * 2020-12-23 2021-08-17 上海兰钧新能源科技有限公司 极柱固定片、顶盖结构及电池
CN214123986U (zh) * 2020-11-18 2021-09-03 江西百思利新能源科技股份有限公司 二次电池顶盖及其二次电池
CN218070006U (zh) * 2022-08-29 2022-12-16 厦门海辰储能科技股份有限公司 顶盖组件、电池及用电设备
US20230187795A1 (en) * 2021-12-13 2023-06-15 Samsung Sdi Co., Ltd. Secondary battery
CN116345029A (zh) * 2023-04-28 2023-06-27 厦门海辰储能科技股份有限公司 端盖组件、储能装置以及用电设备

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160141588A1 (en) * 2014-11-19 2016-05-19 Samsung Sdi Co., Ltd Secondary battery
CN212161873U (zh) * 2020-06-30 2020-12-15 蜂巢能源科技有限公司 一种复合铆环、电池盖板及电池
CN212161872U (zh) * 2020-06-30 2020-12-15 蜂巢能源科技有限公司 一种电池盖板及电池
CN112290133A (zh) * 2020-11-18 2021-01-29 江西百思利新能源科技股份有限公司 二次电池顶盖及其组装方法，及二次电池
CN214123986U (zh) * 2020-11-18 2021-09-03 江西百思利新能源科技股份有限公司 二次电池顶盖及其二次电池
CN213546427U (zh) * 2020-12-16 2021-06-25 上海兰钧新能源科技有限公司 顶盖结构及电池
CN213989020U (zh) * 2020-12-23 2021-08-17 上海兰钧新能源科技有限公司 极柱固定片、顶盖结构及电池
US20230187795A1 (en) * 2021-12-13 2023-06-15 Samsung Sdi Co., Ltd. Secondary battery
CN218070006U (zh) * 2022-08-29 2022-12-16 厦门海辰储能科技股份有限公司 顶盖组件、电池及用电设备
CN116345029A (zh) * 2023-04-28 2023-06-27 厦门海辰储能科技股份有限公司 端盖组件、储能装置以及用电设备

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