WO2025200527A1 - 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

Info

Publication number
WO2025200527A1
WO2025200527A1 PCT/CN2024/135629 CN2024135629W WO2025200527A1 WO 2025200527 A1 WO2025200527 A1 WO 2025200527A1 CN 2024135629 W CN2024135629 W CN 2024135629W WO 2025200527 A1 WO2025200527 A1 WO 2025200527A1
Authority
WO
WIPO (PCT)
Prior art keywords
top cover
pole
mounting groove
protrusion
hole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/135629
Other languages
English (en)
French (fr)
Inventor
肖和攀
檀基本
徐卫东
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
Original Assignee
Xiamen 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 filed Critical Xiamen Hithium Energy Storage Technology Co Ltd
Publication of WO2025200527A1 publication Critical patent/WO2025200527A1/zh
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • 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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/155—Lids or covers characterised by the material
    • H01M50/16—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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/176—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • H01M50/188—Sealing members characterised by the disposition of the sealing members the sealing members being arranged between the lid and terminal
    • 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
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the field of energy storage technology, and in particular to an end cover assembly, an energy storage device, and an electrical equipment.
  • a rechargeable battery also known as a rechargeable battery or storage battery, is a battery that can be recharged after discharge to reactivate its active materials and allow continued use.
  • the recyclability of rechargeable batteries has made them a key power source for electrical devices. As demand for rechargeable batteries grows, so too has the demand for their reliability.
  • FIG6 is a partial enlarged view of the end cover assembly shown in FIG5 at position M;
  • FIG8A is a schematic structural diagram of the first pole and the first flange shown in FIG4 ;
  • FIG8B is a schematic diagram of a partial structure of the first pole and the first flange shown in FIG8A after being cut at an angle;
  • FIG9A is a schematic structural diagram of the second pole and the second flange shown in FIG4 ;
  • FIG10 is a schematic diagram of a partial structure of the end cap assembly shown in FIG2 after being cut away at an angle;
  • the nouns corresponding to the main reference numerals in the figure are: 2000 electric energy conversion device, 3000 wind energy conversion device, 4000 power grid, 1000 energy storage device, 400 housing, 100 end cover assembly, 10 top cover, 11 top cover body, 111 front face, 112 back face, 12 first through hole, 121 first mounting groove, 1211 first sub-mounting groove, 1212 second sub-mounting groove, 122 first reinforcement portion, 1221 third plane, 1222 first step surface, 123 first protrusion, 1231 first plane, 1232 first inclined surface, 124 first boss, 1241 first boss top surface, 1242 first peripheral side surface, 13 second through hole, 131 second mounting groove, 1311 third sub-mounting groove, 1312 fourth sub-mounting groove, 132 second reinforcement portion, 1321 fourth plane, 1322 second step surface, 133 second protrusion, 1331 second plane, 1332 second inclined surface, 134 second boss, 1341 second boss top surface, 1342 second peripheral side surface, 14 explosion-proof valve, 15 injection hole, 16 explosion-proof valve protection sheet, 20 lower
  • FIG. 1 is an application scenario diagram of the energy storage device 1000 provided in an embodiment of the present application.
  • the energy storage device 1000 provided in an 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), a power grid 4000 and an energy storage device 1000.
  • the energy storage device 1000 can be used as an energy storage cabinet and can be installed outdoors.
  • the electric energy conversion device 2000 photovoltaic panel
  • the energy storage device 1000 is used to store the electric energy and supply it to the power grid 4000 during peak electricity consumption, or to supply power when the power grid 4000 is out of power/outage.
  • the energy storage device 1000 may include but is not limited to single cells, battery modules, battery packs, battery systems, etc.
  • the actual application form of the energy storage device 1000 provided in the embodiment of the present application may be, but is not limited to, the products listed, 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 1000.
  • the number of energy storage devices 1000 can be multiple, and multiple energy storage devices 1000 are connected in series or in parallel.
  • the multiple energy storage devices 1000 are supported and electrically connected using isolation plates (not shown).
  • isolation plates not shown.
  • “multiple" refers to two or more.
  • the present embodiment is described by taking the energy storage device 1000 as a single battery as an example, wherein the single battery may include one or more bare cells.
  • FIG. 2 is a schematic diagram of the three-dimensional structure of the energy storage device 1000 shown in FIG. 1 .
  • the energy storage device 1000 includes a housing 400, an end cap assembly 100, and an electrode assembly (not shown).
  • the housing 400 has an opening and is provided with a receiving cavity.
  • the receiving cavity of the housing 400 is connected to the opening of the housing 400.
  • the electrode assembly is received in the receiving cavity.
  • the end cap assembly 100 is mounted on the housing 400 and sealed to the opening of the housing 400.
  • the end cap assembly 100 is mounted on one end of the electrode assembly and is electrically connected to the electrode assembly.
  • the length direction of the end cap assembly 100 shown in FIG2 is defined as the X-axis direction
  • the width direction of the end cap assembly 100 is defined as the Y-axis direction
  • the thickness direction of the end cap assembly 100 is defined as the Z-axis direction.
  • Figure 3 is a structural schematic diagram of the end cover assembly 100 shown in Figure 2
  • Figure 4 is a partial structural decomposition schematic diagram of the end cover assembly 100 shown in Figure 3
  • Figure 5 is a partial structural decomposition schematic diagram of the end cover assembly 100 shown in Figure 3 from another angle.
  • first pole 30 can be a positive pole
  • second pole 40 can be a negative pole
  • first flange 31 is a positive pole flange
  • second flange 41 is a negative pole flange
  • first pole 30 can be a negative pole
  • second pole 40 can be a positive pole
  • first flange 31 is a negative pole flange
  • second flange 41 is a positive pole flange
  • the top cover 10 includes a top cover body 11, an explosion-proof valve 14 and a liquid injection hole 15.
  • the top cover body 11 is a long thin plate, which includes a front face 111 and a back face 112 arranged opposite to the front face 111 along the thickness direction of the top cover body 11 (i.e., the Z-axis direction).
  • the top cover 10 has a first through hole 12 and a second through hole 13.
  • the first through hole 12 and the second through hole 13 both pass through the front face 111 and the back face 112 of the top cover body 11.
  • the first through hole 12 and the second through hole 13 are respectively arranged at opposite ends of the top cover body 11 (arranged along the X-axis direction) for allowing the first pole 30 and the second pole 40 to pass through.
  • both the first through-hole 12 and the second through-hole 13 are hexagonal, adapted to match the shapes of the first and second poles 30 and 40. This prevents the first and second poles 30 and 40 from rotating relative to the top cover 10 when connected to the top cover 10, thereby improving the torsional strength of the first and second poles 30 and 40.
  • the first and second through-holes 12 and 13 can be modified to correspond to the shape of the first pole 30.
  • the first and second through-holes 12 and 13 can be polygonal, circular, or irregularly shaped, in addition to hexagonal shapes, and this is not limited in this application.
  • the second through hole 13, the injection hole 15, the explosion-proof valve 14, and the first through hole 12 are sequentially spaced apart.
  • the explosion-proof valve 14 is located in the middle of the top cover body 11. When the internal pressure of the energy storage device 1000 is excessive, the explosion-proof valve 14 automatically opens to relieve pressure and prevent an explosion.
  • the injection hole 15 is located between the second through hole 13 and the explosion-proof valve 14. During the battery's injection process, electrolyte is injected into the battery through the injection hole 15 on the top cover 10.
  • FIG. 6 is a partial enlarged view of the end cover assembly 100 at position M shown in FIG. 5 .
  • the top cover 10 further includes a first protrusion 123 and a second protrusion 133, both of which are protruding from the back surface 112.
  • the first protrusion 123 and the second protrusion 133 are located at opposite ends of the top cover body 11 (arranged along the X-axis).
  • the top cover 10 also has a first mounting groove 121 and a second mounting groove 131.
  • the first mounting groove 121 is recessed toward the top cover body 11 from the surface of the first protrusion 123 facing away from the top cover body 11.
  • the first through hole 12 extends through the bottom wall and front surface 111 of the first mounting groove 121.
  • the second mounting groove 131 is recessed toward the top cover body 11 from the surface of the second protrusion 133 facing away from the top cover body 11.
  • the second through hole 13 extends through the bottom wall and front surface 111 of the second mounting groove 131.
  • the first and second mounting grooves 121 and 131 are symmetrically arranged about the midline of the length of the top cover body 11.
  • the first and second mounting grooves 121 and 131 are configured to engage with the lower plastic 20.
  • the first protrusion 123 is annular and surrounds the first through hole 12.
  • the first protrusion 123 has a first flat surface 1231 and a first inclined surface 1232 that are connected to each other.
  • the first flat surface 1231 is connected to the sidewall of the first mounting groove 121, and the first inclined surface 1232 is connected to the back surface 112 of the top cover body 11.
  • the first flat surface 1231 can be perpendicular to the thickness direction of the top cover 10. From the front surface 111 to the back surface 112, the first inclined surface 1232 is inclined relative to the thickness direction of the top cover 10 (i.e., the Z-axis direction) toward the first through hole 12.
  • the first protrusion 123 can be formed by a stamping process.
  • material flow is facilitated during the process of stamping and blanking the top cover 10 to form the first protrusion 123.
  • the first protrusion 123 can be obtained by stamping the top cover 10 once, thereby eliminating the need for machining and reducing the processing steps of the top cover 10, which is beneficial to improving the production efficiency of the top cover 10 and reducing costs.
  • the height H1 of the first protrusion 123 in the thickness direction of the top cover 10 is within the range of 0.05-0.3 mm. That is, the distance between the first flat surface 1231 and the back surface 112 is within the range of 0.05-0.3 mm, for example, 0.05 mm, 0.1 mm, 0.3 mm, etc.
  • the first protrusion 123 can be formed by a single stamping operation without the need for machining, thereby improving the production efficiency of the top cover 10 and reducing costs. It also avoids workpiece burrs caused by machining.
  • the second protrusion 133 can be formed by a stamping process.
  • material flow is facilitated during the process of stamping and blanking the top cover 10 to form the second protrusion 133.
  • the second protrusion 133 can be obtained by stamping the top cover 10 once, thereby eliminating the need for machining and reducing the processing steps of the top cover 10, which is beneficial to improving the production efficiency of the top cover 10 and reducing costs.
  • the height of the second protrusion 133 in the thickness direction of the top cover 10 is within the range of 0.05-0.3 mm. That is, the distance between the second flat surface 1331 and the back surface 112 is within the range of 0.05-0.3 mm, for example, 0.05 mm, 0.1 mm, 0.3 mm, etc.
  • the second protrusion 133 can be formed by a single stamping operation without the need for machining, thereby improving the production efficiency of the top cover 10 and reducing costs. It also avoids workpiece burrs caused by machining.
  • the top cover 10 further includes a first reinforcing portion 122 and a second reinforcing portion 132.
  • the first reinforcing portion 122 is protruding from the bottom wall of the first mounting groove 121, and the first reinforcing portion 122 surrounds the first through hole 12 and is connected to the side wall of the first mounting groove 121. That is, the first reinforcing portion 122 is annular and is arranged around the first through hole 12.
  • the first mounting groove 121 can be formed by a stamping process.
  • the first mounting groove 121 includes a first sub-mounting groove 1211 and a second sub-mounting groove 1212 arranged and connected along the thickness direction of the top cover 10.
  • the second sub-mounting groove 1212 is formed by the bottom wall of the first sub-mounting groove 1211 being recessed toward the front surface 111.
  • the first through hole 12 penetrates the bottom wall of the first sub-mounting groove 1211 and the bottom wall of the second sub-mounting groove 1212.
  • the first reinforcement portion 122 has a third flat surface 1221 and a first stepped surface 1222 that are interconnected.
  • the third flat surface 1221 is located on the side of the first reinforcement portion 122 facing away from the bottom wall of the first mounting groove 121 and connects to the side walls of the first mounting groove 121.
  • the first stepped surface 1222 connects to the bottom wall of the first mounting groove 121.
  • the third flat surface 1221 is the bottom wall of the first sub-mounting groove 1211, and the first stepped surface 1222 is the side wall of the second sub-mounting groove 1212.
  • the first stepped surface 1222 connects the bottom wall of the first sub-mounting groove 1211 and the bottom wall of the second sub-mounting groove 1212.
  • the height H2 of the first reinforcing portion 122 in the thickness direction of the top cover 10 is within a range of 0.1 to 0.5 mm. That is, in the Z-axis direction, the distance between the bottom wall of the first sub-mounting groove 1211 and the bottom wall of the second sub-mounting groove 1212 is within a range of 0.1 to 0.5 mm.
  • H2 can be within a range of 0.2 to 0.3 mm. This provides a more rational structural design for the top cover 10 and enhances its strength.
  • the first step surface 1222 is an inclined surface. From the back surface 112 to the front surface 111, the first step surface 1222 is inclined toward the first through hole 12 relative to the thickness direction of the top cover 10.
  • the connection between the first step surface 1222 and the third plane 1221 is chamfered to form a chamfer R11.
  • the connection between the first step surface 1222 and the bottom wall of the first mounting groove 121 is chamfered to form a chamfer R21. That is, there is also a smooth transition between the first step surface 1222 and the bottom wall of the first sub-mounting groove 1211, and a smooth transition between the first step surface 1222 and the bottom wall of the second sub-mounting groove 1212.
  • the flow of material is facilitated during the piercing process of the top cover 10, and the first sub-mounting groove 1211 and the second sub-mounting groove 1212 can be formed by a single stamping process without the need for machining and cutting, thereby reducing the processing steps of the top cover 10, which is conducive to improving production efficiency and reducing costs.
  • the radius of chamfer R11 and the radius of chamfer R21 are in the range of 0.05-3 mm.
  • the second reinforcement portion 132 protrudes from the bottom wall of the second mounting groove 131.
  • the second reinforcement portion 132 surrounds the second through hole 13 and connects to the side walls of the second mounting groove 131.
  • the second reinforcement portion 132 is annular and surrounds the second through hole 13.
  • the second mounting groove 131 can be formed using a stamping process.
  • the second mounting groove 131 includes a third sub-mounting groove 1311 and a fourth sub-mounting groove 1312 arranged and connected along the thickness direction of the top cover 10.
  • the fourth sub-mounting groove 1312 is formed by the bottom wall of the third sub-mounting groove 1311 being recessed toward the front surface 111.
  • the second through hole 13 penetrates the bottom wall of the third sub-mounting groove 1311 and the bottom wall of the fourth sub-mounting groove 1312.
  • the second reinforcement portion 132 has a fourth flat surface 1321 and a second stepped surface 1322 that are interconnected.
  • the fourth flat surface 1321 is located on the side of the second reinforcement portion 132 facing away from the bottom wall of the second mounting groove 131 and connects to the sidewalls of the second mounting groove 131.
  • the second stepped surface 1322 connects to the bottom wall of the second mounting groove 131.
  • the fourth flat surface 1321 serves as the bottom wall of the third sub-mounting groove 1311.
  • the second stepped surface 1322 serves as the sidewall of the fourth sub-mounting groove 1312.
  • the second stepped surface 1322 connects the bottom wall of the third sub-mounting groove 1311 and the bottom wall of the fourth sub-mounting groove 1312.
  • the second step surface 1322 is an inclined surface. From the back surface 112 to the front surface 111, the second step surface 1322 is inclined toward the second through hole 13 relative to the thickness direction of the top cover 10.
  • the connection between the second step surface 1322 and the fourth plane 1321 is chamfered to form a chamfer R12.
  • the connection between the second step surface 1322 and the bottom wall of the second mounting groove 131 is chamfered to form a chamfer R22. That is, there is also a smooth transition between the second step surface 1322 and the bottom wall of the third sub-mounting groove 1311, and a smooth transition between the second step surface 1322 and the bottom wall of the fourth sub-mounting groove 1312.
  • FIG. 7 is a partial enlarged view of the end cover assembly 100 at position N shown in FIG. 4 .
  • the top cover 10 further includes a first boss 124 and a second boss 134.
  • the first boss 124 and the second boss 134 are located at opposite ends of the top cover body 11 (arranged along the X-axis) and are respectively configured to engage with the first and second upper plastic members.
  • the first boss 124 and the second boss 134 are both projecting from the front face 111 of the top cover body 11.
  • the first through hole 12 extends through the first boss 124.
  • the second through hole 13 extends through the second boss 134.
  • the first boss 124 is annular, and the inner periphery of the first boss 124 is hexagonal, for being matched with and connected to the first pole 30.
  • the outer periphery of the first boss 124 is roughly circular.
  • the first boss 124 has a first boss top surface 1241 facing away from the front side 111 and a first circumferential side surface 1242 connected to the first boss top surface 1241, and the first circumferential side surface 1242 is also connected to the front side 111 of the top cover body 11.
  • the first circumferential side surface 1242 is an inclined surface, and from the back side 112 to the front side 111, the first circumferential side surface 1242 is inclined toward the first through hole 12 relative to the thickness direction of the top cover 10 (that is, the Z-axis direction).
  • the angle between the first peripheral side surface 1242 and the Z-axis direction is in the range of 5° to 60°.
  • the angle between the first peripheral side surface 1242 and the Z-axis direction can be in the range of 10° to 30°, for example, 10°, 20°, 30°, etc.
  • the second boss 134 is annular, and the inner periphery of the second boss 134 is hexagonal, for being matched with the second pole 40 for connection.
  • the outer periphery of the second boss 134 is roughly circular.
  • the second boss 134 has a second boss top surface 1341 facing away from the front 111 and a second peripheral side surface 1342 connected to the second boss top surface 1341, and the second peripheral side surface 1342 is also connected to the front 111 of the top cover body 11.
  • the second peripheral side surface 1342 is an inclined surface, and from the back 112 to the front 111, the second peripheral side surface 1342 is inclined toward the second through hole 13 relative to the thickness direction of the top cover 10 (that is, the Z-axis direction).
  • the angle between the second peripheral side surface 1342 and the Z-axis direction is in the range of 5° to 60°.
  • the angle between the second peripheral side surface 1342 and the Z-axis direction can be in the range of 10° to 30°, for example, 10°, 20°, 30°, etc.
  • the lower plastic 20 includes a lower plastic body 21.
  • the lower plastic body 21 is generally a rectangular thin plate. Along the thickness direction (Z-axis direction) of the lower plastic body 21, it includes a first surface 211 and a second surface 212 arranged opposite to the first surface 211.
  • the lower plastic 20 has a first terminal through-hole 22, a first receiving groove 221, a second terminal through-hole 23, and a second receiving groove 231.
  • the first receiving groove 221 is formed by the second surface 212 being recessed toward the first surface 211, and a first retaining protrusion 221A is formed on the first surface 211.
  • the first terminal through-hole 22 extends through the bottom wall of the first receiving groove 221 and the first surface 211, that is, through the first retaining protrusion 221A.
  • the first receiving groove 221 and the first terminal through-hole 22 are coaxially disposed and positioned near one end of the lower plastic body 21.
  • the first terminal through-hole 22 is configured to allow the first terminal 30 to pass through.
  • the first terminal through-hole 22 is a hexagonal through-hole configured to engage with the first terminal 30.
  • the first receiving groove 221 is configured to accommodate the first pressure ring 51.
  • the second receiving groove 231 is formed by the second surface 212 being recessed toward the first surface 211, and a second retaining protrusion 231A is formed on the first surface 211.
  • the second pole through hole 23 passes through the first surface 211 and the second surface 212, and the second pole through hole 23 passes through the bottom wall of the second receiving groove 231, that is, through the second retaining protrusion 231A.
  • the second receiving groove 231 and the second pole through-hole 23 are coaxially disposed and located near the other end of the lower plastic body 21.
  • the second pole through-hole 23 is configured to allow the second pole 40 to pass through.
  • the second pole through-hole 23 is a hexagonal through-hole configured to engage with the second pole 40.
  • the second receiving groove 231 is configured to accommodate the second pressure ring 52.
  • the lower plastic member 20 further includes a first protrusion 222 and a second protrusion 232.
  • the first protrusion 222 is provided on the side of the first retaining protrusion 221A facing away from the first surface 211.
  • the first protrusion 222 and the first retaining protrusion 221A are coaxially arranged, and the first pole through-hole 22 extends through the first protrusion 222.
  • the first retaining protrusion 221A and the first protrusion 222 are respectively configured to mate with the first sub-mounting groove 1211 and the second sub-mounting groove 1212.
  • the second protrusion 232 is provided on the side of the second retaining protrusion 231A facing away from the first surface 211.
  • the second protrusion 232 and the second retaining protrusion 231A are coaxially arranged, and the second pole through-hole 23 extends through the second protrusion 232.
  • the second retaining protrusion 231A and the second protrusion 232 are respectively configured to mate with the third sub-mounting groove 1311 and the fourth sub-mounting groove 1312.
  • the lower plastic 20 further includes a first avoidance groove 223 and a second avoidance groove 233.
  • Both the first avoidance groove 223 and the second avoidance groove 233 are formed by the first surface 211 being recessed toward the second surface 212.
  • the first avoidance groove 223 is disposed around the first retaining protrusion 221A.
  • the first avoidance groove 223 is configured to correspond to the first protrusion 123 of the top cover 10, avoiding the first protrusion 123.
  • the second avoidance groove 233 is disposed around the second retaining protrusion 231A.
  • the second avoidance groove 233 is configured to correspond to the second protrusion 133 of the top cover 10, avoiding the second protrusion 133.
  • FIG. 8A is a schematic structural diagram of the first pole 30 and the first flange 31 shown in FIG. 4
  • FIG. 8B is a schematic structural diagram of a portion of the first pole 30 and the first flange 31 shown in FIG. 8A after being cut at an angle.
  • the first pole 30 is at least partially a hexagonal column. It is understandable that the first pole 30 can be partially a hexagonal column, or the first pole 30 can be entirely a hexagonal column.
  • the first pole 30 includes a first portion 301 and a second portion 302. In Figure 8B, dotted lines are used to schematically distinguish the first portion 301, the second portion 302, and the first flange 31.
  • the second portion 302 is connected to a side surface of the first portion 301, and the first portion 301 and the second portion 302 are coaxially arranged.
  • the first portion 301 is shaped like a regular hexagonal column, and the second portion 302 is shaped like a cylinder.
  • the projected area of the second portion 302 is smaller than the projected area of the first portion 301.
  • the first portion 301 is used to penetrate the first through hole 12 and cooperate with the top cover 10 to obtain higher torsional strength, and the second portion 302 is used to cooperate with the first pressure ring 51.
  • the second portion 302 is also used to electrically connect to the electrode assembly of the energy storage device 1000 .
  • each two adjacent surfaces from the first surface 3012 to the sixth surface 3017 are chamfered, that is, each two adjacent surfaces from the first surface 3012 to the sixth surface 3017 have a smooth transition.
  • the connection between the first surface 3012 and the second surface 3013 is chamfered to form a chamfer R01, that is, a smooth transition is formed between the first surface 3012 and the second surface 3013.
  • the radius of the chamfer R01 is in the range of 0.5 mm to 5.0 mm.
  • the radius of the chamfer R01 can be in the range of 1.5 mm to 2.5 mm.
  • connection between the second surface 3013 and the third surface 3014, the connection between the third surface 3014 and the fourth surface 3015, the connection between the fourth surface 3015 and the fifth surface 3016, the connection between the fifth surface 3016 and the sixth surface 3017, and the connection between the sixth surface 3017 and the first surface 3012 are all chamfered.
  • the connections between the first top surface 3011 and the first surface 3012, the second surface 3013, the third surface 3014, the fourth surface 3015, the fifth surface 3016, and the sixth surface 3017 are all rounded. That is, the first top surface 3011 and the first surface 3012, the second surface 3013, the third surface 3014, the fourth surface 3015, the fifth surface 3016, and the sixth surface 3017 all have smooth transitions. This can reduce the manufacturing difficulty of the first electrode 30 and facilitate material flow during the manufacturing process of the first electrode 30.
  • a chamfer R02 is formed at the connection between the first top surface 3011 and the first surface 3012.
  • the radius of the chamfer R02 is in the range of 0.1 mm to 1 mm.
  • the radius of the chamfer R02 is in the range of 0.25 mm to 0.5 mm.
  • chamfers are formed at the connection between the first top surface 3011 and the second surface 3013, the connection between the first top surface 3011 and the third surface 3014, the connection between the first top surface 3011 and the fourth surface 3015, the connection between the first top surface 3011 and the fifth surface 3016, and the connection between the first top surface 3011 and the sixth surface 3017, and the range of the radius of the chamfer is the same as the range of the radius of the chamfer between the first top surface 3011 and the first surface 3012.
  • each of the first through sixth surfaces 3012 through 3017 is inclined toward the center of the first terminal 30. That is, each of the first through sixth surfaces 3012 through 3017 is arranged at an angle with the Z-axis.
  • the area of the first top surface 3011 of the first portion 301 is smaller than the area of the surface of the first portion 301 facing away from the second portion 302. This reduces mold wear during the manufacturing process of the first terminal 30, facilitates material flow, and improves the manufacturing yield of the first terminal 30.
  • the angle between the first through sixth surfaces 3012 through 3017 and the Z-axis is in the range of 0.05° to 5°.
  • the angle between the first through sixth surfaces 3012 through 3017 and the Z-axis is in the range of 1° to 3°.
  • Figure 9A is a schematic diagram of the structure of the second pole 40 and second flange 41 shown in Figure 4.
  • Figure 9B is a schematic diagram of the partial structure of the second pole 40 and second flange 41 shown in Figure 9A, cut at an angle.
  • the second pole 40 is at least partially hexagonal. It is understood that the second pole 40 can be partially or entirely hexagonal.
  • the second pole 40 includes a third portion 401 and a fourth portion 402. In Figure 9B, dashed lines schematically distinguish the third portion 401, the fourth portion 402, and the second flange 41.
  • the second flange 41 is cylindrical.
  • the second flange 41 is located on the side of the third portion 401 facing away from the fourth portion 402 and is connected to the third portion 401.
  • the third portion 401 can be located in the middle of the second flange 41.
  • the second pole 40 and the second flange 41 are integrally formed components and can be formed using a stamping process.
  • the third portion 401 of the second pole 40 includes a second top surface 4011 facing toward and connected to the fourth portion 402.
  • the third portion 401 also includes a seventh surface 4012, an eighth surface 4013, a ninth surface 4014, a tenth surface 4015, an eleventh surface 4016, and a twelfth surface 4017, which are connected in sequence.
  • the seventh through twelfth surfaces 4012 through 4017 are all connected to the second top surface 4011.
  • the seventh through twelfth surfaces 4012 through 4017 are centrally symmetrically distributed about the central axis O2-O2 of the second pole 40.
  • each two adjacent surfaces from the seventh surface 4012 to the twelfth surface 4017 are chamfered, that is, each two adjacent surfaces from the seventh surface 4012 to the twelfth surface 4017 have a smooth transition.
  • wear on the mold can be reduced, while being beneficial to material flow and improving the manufacturing yield of the second pole 40; in addition, the material flow resistance during the stamping process of the second pole 40 can be reduced, and the surface layer of the third part 401 is not prone to cracking.
  • the connection between the seventh surface 4012 and the eighth surface 4013 is chamfered to form a chamfer R03, that is, a smooth transition is formed between the seventh surface 4012 and the eighth surface 4013.
  • the radius of the chamfer R03 is in the range of 0.5 mm to 5.0 mm.
  • the radius of the chamfer R03 can be in the range of 1.5 mm to 2.5 mm.
  • the connections between the second top surface 4011 and the seventh surface 4012, the eighth surface 4013, the ninth surface 4014, the tenth surface 4015, the eleventh surface 4016, and the twelfth surface 4017 are all chamfered. That is, the second top surface 4011 and the seventh surface 4012, the eighth surface 4013, the ninth surface 4014, the tenth surface 4015, the eleventh surface 4016, and the twelfth surface 4017 all have smooth transitions. This reduces the manufacturing process difficulty of the second electrode 40 and facilitates material flow during the manufacturing process of the second electrode 40.
  • a chamfer R04 is formed at the connection between the second top surface 4011 and the seventh surface 4012.
  • the radius of chamfer R04 is in the range of 0.1 mm to 1 mm.
  • the radius of chamfer R04 is in the range of 0.25 mm to 0.5 mm.
  • chamfers are formed at the connection between the second top surface 4011 and the eighth surface 4013, the connection between the second top surface 4011 and the ninth surface 4014, the connection between the second top surface 4011 and the tenth surface 4015, the connection between the second top surface 4011 and the eleventh surface 4016, and the connection between the second top surface 4011 and the twelfth surface 4017, and the range of the radius of the chamfer is the same as the range of the radius of the chamfer between the second top surface 4011 and the seventh surface 4012.
  • each of the seventh through twelfth surfaces 4012 through 4017 is inclined toward the center of the second pole 40. That is, the area of the second top surface 4011 of the third portion 401 is smaller than the area of the surface of the third portion 401 facing away from the fourth portion 402. This reduces mold wear during the manufacturing process of the second pole 40, facilitates material flow, and improves the manufacturing yield of the second pole 40. Furthermore, it reduces material flow resistance during the stamping process of the second pole 40, making the surface layer of the third portion 401 less susceptible to cracking.
  • the angle between the seventh through twelfth surfaces 4012 through 4017 and the Z-axis is in the range of 0.05° to 5°.
  • the angle between the seventh through twelfth surfaces 4012 through 4017 and the Z-axis is in the range of 1° to 3°.
  • At least a portion of the first pole 30 and at least a portion of the second pole 40 may also be a polygonal pole structure such as a quadrilateral pole or an octagonal pole, or a round pole, a special-shaped pole, etc.
  • the polygonal pole structure may be a regular polygonal pole structure, such as a regular quadrilateral pole or a regular octagonal pole; the polygonal pole structure may also be a non-regular polygonal pole structure, for example, the four corners of a regular quadrilateral pole may be cut off to form an octagonal pole with four short sides and four long sides.
  • one or more flat surfaces can be formed by cutting the cylindrical first and second poles 30, 40 along their height. This prevents the first and second poles 30, 40 from rotating relative to the top cover 10 when mated and connected, thereby improving the torsional strength of the first and second poles 30, 40. For example, by cutting the cylindrical first and second poles 30, 40 along their height to form four centrally symmetrical flat surfaces, the first and second poles 30, 40 can be more torsionally resistant and require fewer processing steps.
  • the first pressure ring 51 is sleeved on the first pole 30 and fixedly connects the first pole 30 and the lower plastic 20.
  • the inner side wall of the first pressure ring 51 is circular and is used to cooperate with the second part 302 of the first pole 30.
  • the outer periphery of the first pressure ring 51 is roughly pentagonal and one side is a short side. It is understandable that the first pressure ring 51 can be obtained by cutting and removing a corner of a rectangular pressure ring.
  • the first pressure ring 51 when the first pressure ring 51 is connected to the lower plastic 20, the first pressure ring 51 is not easy to rotate relative to the lower plastic 20 and the top cover 10, and the first pole 30 is not easy to rotate relative to the top cover 10, which is beneficial to improve the torsional strength of the first pole 30.
  • the second pressure ring 52 is sleeved on the second pole 40 and fixedly connects the second pole 40 and the lower plastic 20.
  • the inner sidewall of the second pressure ring 52 is circular and is used to cooperate with the fourth portion 402 of the second pole 40.
  • the outer sidewall of the second pressure ring 52 is roughly pentagonal, and one side is a short side. It is understandable that the second pressure ring 52 can be obtained by cutting a rectangular pressure ring and removing a corner.
  • the second pressure ring 52 when the second pressure ring 52 is connected to the lower plastic 20, the second pressure ring 52 is not easy to rotate relative to the lower plastic 20 and the top cover 10, and thus the second pole 40 is not easy to rotate relative to the top cover 10, which is beneficial to improve the torsional strength of the second pole 40.
  • the end cap assembly 100 further includes a first upper plastic member 61 and a second upper plastic member 62. Both the first upper plastic member 61 and the second upper plastic member 62 are annular.
  • the first upper plastic member 61 is fixedly connected to the top cap 10 and is sleeved over the first portion 301 and the first flange 31 of the first pole 30. In other words, the first pole 30 and the first flange 31 are connected and insulated from the top cap 10 via the first upper plastic member 61.
  • the second upper plastic member 62 is fixedly connected to the top cap 10 and is sleeved over the third portion 401 and the second flange 41 of the second pole 40. In other words, the second pole 40 and the second flange 41 are connected and insulated from the top cap 10 via the second upper plastic member 62.
  • the first upper plastic 61 includes a first main body portion 611, a first inner ring portion 612, and a first outer ring portion 613.
  • the outer periphery of the first main body portion 611 is circular, and the first main body portion 611 has a through hole.
  • the first inner ring portion 612 is arranged around the through hole of the first main body portion 611 and protrudes from one side surface of the first main body portion 611.
  • the through hole of the first main body portion 611 and the first inner ring portion 612 are both regular hexagons.
  • the first outer ring portion 613 surrounds the first main body portion 611 and is connected to the first main body portion 611.
  • the first outer ring portion 613 partially protrudes from the two side surfaces of the first main body portion 611, and forms a first limiting groove 614 with the first main body portion 611 and the first inner ring portion 612.
  • the through hole of the first main body 611 and the first inner ring portion 612 are regular hexagons, and are used to cooperate with the first pole 30.
  • the shape of the through hole of the first main body 611 and the shape of the first inner ring portion 612 can be changed to correspond to the shape of the first pole 30.
  • the through hole of the first main body 611 and the first inner ring portion 612 can be polygonal, circular, or irregularly shaped, and this application does not limit this.
  • the second upper plastic portion 62 includes a second main body portion 621, a second inner ring portion 622, and a second outer ring portion 623.
  • the outer periphery of the second main body portion 621 is circular, and the second main body portion 621 has a through hole.
  • the second inner ring portion 622 is arranged around the through hole of the second main body portion 621 and protrudes from a side surface of the second main body portion 621.
  • the through hole of the second main body portion 621 and the second inner ring portion 622 are both regular hexagons.
  • the second outer ring portion 623 surrounds the second main body portion 621 and is connected to the second main body portion 621.
  • the second outer ring portion 623 partially protrudes from the two side surfaces of the second main body portion 621 and forms a second limiting groove 624 with the second main body portion 621 and the second inner ring portion 622.
  • the through hole of the second main body 621 and the second inner ring portion 622 are in the shape of a regular hexagon, and are configured to be coupled to the second pole 40.
  • the shape of the through hole of the second main body 621 and the shape of the second inner ring portion 622 can be changed to correspond to the shape of the second pole 40.
  • the through hole of the second main body 621 and the second inner ring portion 622 can be in the shape of a polygonal ring, a circular ring, or a special-shaped ring, which is not limited in the present application.
  • the lower plastic 20 is stacked and connected to the top cover 10.
  • the length of the lower plastic 20 is equivalent to the length of the top cover 10
  • the width of the lower plastic 20 is equivalent to the width of the top cover 10, wherein a certain tolerance range is allowed.
  • the lower plastic 20 is located on the side of the back surface 112 of the top cover body 11 facing away from the front surface 111, and is stacked and connected to the top cover 10.
  • the first surface 211 of the lower plastic 20 is opposite to and fits the back surface 112 of the top cover body 11.
  • the first pole through hole 22 of the lower plastic 20 is opposite to the first through hole 12 of the top cover 10 and is connected to each other
  • the second pole through hole 23 is opposite to the second through hole 13 of the top cover 10 and is connected to each other.
  • the first upper plastic member 61 is sleeved around the periphery of the first terminal 30 and the periphery of the first pressure ring 51, and is connected to the front surface 111 of the top cover body 11.
  • the first inner ring portion 612 of the first upper plastic member 61 surrounds the first terminal 30 and is clamped between the first through hole 12 and the first terminal 30.
  • the first outer ring portion 613 of the first upper plastic member 61 is sleeved around the first flange 31, which is connected to both the first outer ring portion 613 and the first main body 611.
  • the first boss 124 of the top cover body 11 is located in the first limiting groove 614 of the first upper plastic 61, and the first boss 124 is connected to the first outer ring portion 613, the first main body 611, and the first inner ring portion 612.
  • dotted lines are used to schematically distinguish the top cover body 11 and the first boss 124.
  • the height of the hole wall of the first through hole 12 is increased, thereby increasing the connection area between the first pole 30 and the top cover 10, which is beneficial to prevent the first pole 30 from twisting relative to the top cover 10, thereby reducing the cutting of the lower plastic 20.
  • the distance from the groove side wall of the second sub-mounting groove 1212 to the hole wall of the first through hole 12 is smaller than the distance from the groove side wall of the first sub-mounting groove 1211 to the hole wall of the first through hole 12, that is, by setting the first reinforcement portion 122, the distance from the groove side wall of the first mounting groove 121 to the hole wall of the first through hole 12 can be reduced, shortening the force arm, so that the top cover 10 can withstand greater external force at the first mounting groove 121, which is beneficial to improving the structural strength of the top cover 10.
  • the second upper plastic member 62 is sleeved around the periphery of the second pole 40 and the periphery of the second pressure ring 52 and is connected to the front face 111 of the top cover body 11.
  • the second inner ring portion 622 of the second upper plastic member 62 surrounds the second pole 40 and is clamped between the second through hole 13 and the second pole 40.
  • the second outer ring portion 623 of the second upper plastic member 62 is sleeved around the second flange 41, and the second flange 41 is connected to the second outer ring portion 623 and the second main body portion 621.
  • dotted lines are used to schematically distinguish the first main body portion 611, the first inner ring portion 612, and the first outer ring portion 613.
  • the second boss 134 of the top cover body 11 is located within the second retaining groove 624 of the second upper plastic 62.
  • the second boss 134 is connected to the second outer ring portion 623, the second main body 621, and the second inner ring portion 622.
  • the height of the hole wall of the second through hole 13 is increased, thereby increasing the connection area between the second pole 40 and the top cover 10, which helps prevent the second pole 40 from twisting relative to the top cover 10, thereby reducing cutting of the lower plastic 20.
  • the distance from the groove side wall of the fourth sub-mounting groove 1312 to the hole wall of the second through hole 13 is smaller than the distance from the groove side wall of the third sub-mounting groove 1311 to the hole wall of the second through hole 13, that is, by setting the second reinforcement portion 132, the force arm can be shortened, and the top cover 10 can withstand greater external force at the second mounting groove 131, which is beneficial to improving the structural strength of the top cover 10.
  • first upper plastic 61 and the second upper plastic 62 are formed by in-mold injection molding after the lower plastic 20, the first pole 30, the second pole 40 and the top cover 10 are assembled. That is, during the formation process, the above-mentioned position and connection relationship is established with the first pole 30, the second pole 40 and the top cover 10 and the lower plastic 20; for example, the first inner ring portion 612 of the first upper plastic 61 is directly formed between the first through hole 12 and the first pole 30, and is clamped between the first through hole 12 and the first pole 30; the first main body portion 611 of the first upper plastic 61 is directly formed between the first flange 31 and the first boss 124, and is clamped between the first flange 31 and the first boss 124.
  • the second inner ring portion 622 of the second upper plastic member 62 is directly formed between the second through hole 13 and the second pole 40 and is clamped between the second through hole 13 and the second pole 40 .
  • the second main body portion 621 of the second upper plastic member 62 is directly formed between the second flange 41 and the second boss 134 and is clamped between the second flange 41 and the second boss 134 .
  • the first seal 71 is located within the first terminal through-hole 22 and is sleeved onto the first inner ring portion 612 of the first upper plastic member 61. That is, the first seal 71 is sleeved onto the first terminal 30 and is clamped between the top cover body 11 and the first pressure ring 51. Specifically, along the thickness direction of the end cap assembly 100, the first seal 71 is at least partially clamped between the surface of the first pressure ring 51 facing the first flange 31 and the back surface 112 of the top cover body 11. It is understood that the first seal 71 is compressed between the first pressure ring 51, the top cover body 11, and the first upper plastic member 61, and seals the first terminal through-hole 22.
  • the second seal 72 is located within the second pole through-hole 23 and is sleeved onto the second inner ring portion 622 of the second upper plastic member 62. That is, the second seal 72 is sleeved onto the second pole 40 and is clamped between the top cover body 11 and the second pressure ring 52. Specifically, along the thickness direction of the end cap assembly 100, the second seal 72 is at least partially clamped between the surface of the second pressure ring 52 facing the second flange 41 and the back surface 112 of the top cover body 11. It will be understood that the second seal 72 is compressed between the second pressure ring 52, the top cover body 11, and the second upper plastic member 62, thereby sealing the second pole through-hole 23.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

一种端盖组件（100）、储能装置（1000）及用电设备。端盖组件（100）包括顶盖（10）、下塑胶（20）、第一极柱（30）以及第一压环（51）；顶盖（10）包括第一凸起（123），顶盖（10）具有第一安装槽（121），下塑胶（20）具有第一收容槽（221）。下塑胶（20）与顶盖（10）层叠并连接，第一收容槽（221）至少部分位于第一安装槽内（121），第一极柱（30）穿设于顶盖（10）和下塑胶（20），第一压环（51）套设于第一极柱（30）且与第一极柱（30）固定连接，第一压环（51）至少部分位于第一收容槽（221）内且与第一收容槽（221）的槽壁固定连接；在垂直于端盖组件（100）的厚度方向的方向上，第一压环（51）在下塑胶（20）的投影覆盖第一凸起（123）在下塑胶（20）的投影。

Description

端盖组件、储能装置及用电设备
本申请要求于2024年03月27日提交中国专利局、申请号为2024103614244、申请名称为“端盖组件、储能装置及用电设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及储能技术领域，尤其涉及一种端盖组件、储能装置及用电设备。
背景技术
二次电池(Rechargeable battery)又称为充电电池或蓄电池，是指在电池放电后可通过充电的方式使活性物质激活而继续使用的电池。二次电池的可循环利用特性使其逐渐成为用电设备的主要动力来源，随着二次电池的需求量逐渐增大，人们对其可靠性有了更高的要求。
现有的二次电池，极柱通过压环嵌设到下塑胶后，压环在极柱的带动下会相对顶盖发生扭转，并会挤压、切割下塑胶。
发明内容
本申请提供一种端盖组件，能够防止下塑胶被切割。
端盖组件包括顶盖、下塑胶、第一极柱以及第一压环；顶盖包括顶盖本体和第一凸起，沿顶盖本体的厚度方向，顶盖本体具有正面和与正面背对设置的背面，第一凸起凸设于背面，顶盖具有第一安装槽及第一通孔，第一安装槽由第一凸起背向顶盖本体的表面向顶盖本体凹陷，第一通孔贯穿第一安装槽的槽底壁及正面；下塑胶包括下塑胶本体，沿下塑胶本体的厚度方向，下塑胶本体包括第一表面和与第一表面背对设置的第二表面；下塑胶具有第一收容槽，第一收容槽是由第二表面向第一表面方向凹陷形成；下塑胶位于背面背向正面的一侧，且与顶盖层叠并连接，第一收容槽至少部分位于第一安装槽内，第一极柱穿设于第一通孔；第一压环套设于第一极柱且与第一极柱固定连接，第一压环至少部分位于第一收容槽内且与第一收容槽的槽壁固定连接；在垂直于端盖组件的厚度方向的方向上，第一压环在下塑胶的投影覆盖第一凸起在下塑胶的投影。
本申请实施例中，通过在顶盖设置第一凸起，第一凸起环绕第一安装槽，增大了第一安装槽的槽侧壁的高度，从而增大了第一安装槽的槽侧壁的面积。当第一压环容纳于第一安装槽时，可以增大顶盖与第一压环在垂直于端盖组件的厚度方向上的重合面积，从而可以增大第一压环与顶盖的连接面积，第一压环和第一极柱不容易相对顶盖转动，有利于提高第一极柱的抗扭强度，防止下塑胶位于第一压环和顶盖本体之间的部分被切割。
本申请还提供一种储能装置，储能装置包括壳体和如上述的端盖组件，端盖组件安装于壳体且密封壳体的开口。
本申请还提供一种用电设备，用电设备包括上述的储能装置，储能装置用于储存电能。
附图说明
为了更清楚地说明本申请的技术方案，下面将对实施方式中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以如这些附图获得其他的附图。
图1为本申请实施例提供的储能装置的应用场景图；
图2为图1所示的储能装置的立体结构示意图；
图3为图2所示的端盖组件的结构示意图；
图4为图3所示的端盖组件的部分结构分解示意图；
图5为图3所示的端盖组件的另一角度的部分结构分解示意图；
图6为图5所示的端盖组件在M处的局部放大图；
图7为图4所示的端盖组件在N处的局部放大图；
图8A为图4所示的第一极柱和第一法兰的结构示意图；
图8B为图8A所示的第一极柱和第一法兰的一角度剖开后的部分结构示意图；
图9A为图4所示的第二极柱和第二法兰的结构示意图；
图9B为图9A所示的第二极柱和第二法兰的一角度剖开后的部分结构示意图；
图10为图2所示的端盖组件的一角度剖开后的部分结构示意图；
图11为图10所示的端盖组件在P处的局部放大示意图。
图中各主要的附图标记对应的名词为：2000电能转换装置，3000风能转换装置，4000电网，1000储能装置，400壳体，100端盖组件，10顶盖，11顶盖本体，111正面，112背面，12第一通孔，121第一安装槽，1211第一子安装槽，1212第二子安装槽，122第一加强部，1221第三平面，1222第一台阶面，123第一凸起，1231第一平面，1232第一斜面，124第一凸台，1241第一凸台顶面，1242第一周侧面，13第二通孔，131第二安装槽，1311第三子安装槽，1312第四子安装槽，132第二加强部，1321第四平面，1322第二台阶面，133第二凸起，1331第二平面，1332第二斜面，134第二凸台，1341第二凸台顶面，1342第二周侧面，14防爆阀，15注液孔，16防爆阀保护片，20下塑胶，21下塑胶本体，211第一表面，212第二表面，22第一极柱通孔，221第一收容槽，221A第一卡持凸起，222第一凸出部，223第一避让槽，23第二极柱通孔，231第二收容槽，231A第二卡持凸起，232第二凸出部，233第二避让槽，30第一极柱，301第一部分，3011第一顶面，3012第一面，3013第二面，3014第三面，3015第四面，3016第五面，3017第六面，302第二部分，31第一法兰，40第二极柱，401第三部分，4011第二顶面，4012第七面，4013第八面，4014第九面，4015第十面，4016第十一面，4017第十二面，402第四部分，41第二法兰，51第一压环，52第二压环，61第一上塑胶，611第一主体部，612第一内环部，613第一外环部，614第一限位槽，62第二上塑胶，621第二主体部，622第二内环部，623第二外环部，624第二限位槽，71第一密封件，72第二密封件。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
请参阅图1，图1为本申请实施例提供的储能装置1000的应用场景图。本申请实施例提供的储能装置1000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)、电网4000以及储能装置1000，该储能装置1000可作为储能柜，可以安装于室外。具体的，电能转换装置2000(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1000用于储存该电能并在用电高峰时供给电网4000，或者在电网4000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1000用于储存该电能并在用电高峰时供给电网4000，或者在电网4000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。
可以理解的是，储能装置1000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1000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1000的应用形态做严格限制。储能装置1000的数量可以为多个，多个储能装置1000相互串联或并联，多个储能装置1000采用隔离板(图未示)进行支撑及电连接。本实施例中，“多个”是指两个及两个以上。
本申请实施例仅以储能装置1000为单体电池为例进行说明。其中，单体电池可以包括一个或多个裸电芯。
请参阅图2，图2为图1所示的储能装置1000的立体结构示意图。
在一些实施例中，储能装置1000包括壳体400、端盖组件100和电极组件(图未示)，壳体400具有开口并设有容纳腔，壳体400的容纳腔连通壳体400的开口。电极组件容纳于容纳腔。端盖组件100装于壳体400，且密封于壳体400的开口。端盖组件100装于电极组件的一端并与电极组件电连接。为方便描述，定义图2所示端盖组件100的长度方向为X轴方向，端盖组件100的宽度方向为Y轴方向，端盖组件100的厚度方向为Z轴方向，X轴方向、Y轴方向和Z轴方向两两相互垂直。本申请实施例描述所提及的“上”、“下”等方位用词是依据说明书附图2所示方位进行的描述，以朝向Z轴正方向为“上”，以朝向Z轴负方向为“下”，其并不形成对储能装置1000于实际应用场景中的限定。以下文中所用到的“相同”、“垂直”均允许有一定的公差存在。
请结合参阅图3、图4和图5，图3为图2所示的端盖组件100的结构示意图，图4为图3所示的端盖组件100的部分结构分解示意图，图5为图3所示的端盖组件100的另一角度的部分结构分解示意图。
在本实施例中，端盖组件100包括顶盖10、下塑胶20、第一极柱30、第二极柱40、第一压环51和第二压环52。本实施例中的顶盖10为光铝件，下塑胶20为塑料材质制成且绝缘。下塑胶20安装于顶盖10的一侧。第一极柱30和第二极柱40用于与电极组件电连接。示例性的，第一极柱30的一端连接有第一法兰31。第二极柱40的一端连接有第二法兰41。需要说明的是，第一极柱30可以为正极极柱，第二极柱40可以为负极极柱，第一法兰31为正极法兰，第二法兰41为负极法兰；或者，第一极柱30可以为负极极柱，第二极柱40可以为正极极柱，第一法兰31为负极法兰，第二法兰41为正极法兰。
示例性的，顶盖10包括顶盖本体11、防爆阀14和注液孔15。顶盖本体11为长条形薄板，沿顶盖本体11厚度方向(也即，Z轴方向)，其包括正面111和与正面111背对设置的背面112。顶盖10具有第一通孔12和第二通孔13。第一通孔12和第二通孔13均贯穿顶盖本体11的正面111和背面112。第一通孔12和第二通孔13分别设于顶盖本体11的相对两端(沿着X轴方向排列)，用于供第一极柱30和第二极柱40穿过。
示例性的，第一通孔12和第二通孔13均呈六边形，用于与第一极柱30和第二极柱40的形状配合。这样，第一极柱30和第二极柱40与顶盖10连接时，第一极柱30和第二极柱40不容易相对顶盖10转动，有利于提高第一极柱30和第二极柱40的抗扭强度。在本申请实施例中，第一通孔12和第二通孔13可以对应第一极柱30的形状改变，第一通孔12和第二通孔13可以为除六边形外的其他多边形、圆形或异形等，本申请对此不做限定。
示例性的，沿顶盖10的长度方向，也就是X轴方向，第二通孔13、注液孔15、防爆阀14及第一通孔12依次间隔排列。防爆阀14位于顶盖本体11中部位置，当储能装置1000内部压力过大时，防爆阀14会自动打开泄压，以防止出现爆炸的情况。注液孔15位于第二通孔13和防爆阀14之间，在动力电池的注液工序中，通过顶盖10上的注液孔15向电池内注入电解液。
在一些实施例中，顶盖10还可以包括防爆阀保护片16，防爆阀保护片16与防爆阀14相对设置，且盖住防爆阀14。
请结合参阅图4、图5和图6，图6为图5所示的端盖组件100在M处的局部放大图。
在本实施例中，顶盖10还包括第一凸起123和第二凸起133，第一凸起123和第二凸起133均凸设于背面112。第一凸起123和第二凸起133位于顶盖本体11的相对两端设置(沿着X轴方向排列)。顶盖10还具有第一安装槽121和第二安装槽131。第一安装槽121由第一凸起123背向顶盖本体11的表面向顶盖本体11凹陷。第一通孔12贯穿第一安装槽121的槽底壁及正面111。第二安装槽131由第二凸起133背向顶盖本体11的表面向顶盖本体11凹陷。第二通孔13贯穿第二安装槽131的槽底壁及正面111。第一安装槽121和第二安装槽131相对顶盖本体11的长度方向上的中线对称分布。第一安装槽121和第二安装槽131用于与下塑胶20配合连接。
示例性的，第一凸起123呈环状，且环绕第一通孔12。第一凸起123具有相互连接的第一平面1231和第一斜面1232，第一平面1231连接第一安装槽121的槽侧壁，第一斜面1232连接顶盖本体11的背面112。其中，第一平面1231可以垂直于顶盖10的厚度方向。由正面111向背面112方向，第一斜面1232相对顶盖10的厚度方向(也即，Z轴方向)朝向第一通孔12倾斜。
在本申请实施例中，第一凸起123可以采用冲压工艺成型，通过在第一凸起123设置第一斜面1232，使得在对顶盖10进行冲压冲裁以形成第一凸起123的过程中，便于实现材料流动，第一凸起123可以通过对顶盖10进行一次冲压获得，从而无需使用机加工，减少了顶盖10的加工工序，从而有利于提高顶盖10的生产效率，降低成本。
在本实施例中，在顶盖10的厚度方向上，第一凸起123的高度H1在0.05-0.3mm范围内，也即，第一平面1231与背面112之间的距离在0.05-0.3mm范围内，例如，0.05mm、0.1mm、0.3mm等。这样，第一凸起123可以通过一次冲压成型，无需通过机加工切削，从而有利于提高顶盖10的生产效率，降低成本，同时还能够避免因机加工而产生的工件毛刺。
示例性的，第二凸起133呈环状，且环绕第二通孔13。第二凸起133具有相互连接的第二平面1331和第二斜面1332，第二平面1331还连接第二安装槽131的槽侧壁，第二斜面1332还连接顶盖本体11的背面112。由正面111向背面112方向，第二斜面1332相对顶盖10的厚度方向(也即，Z轴方向)朝向第二通孔13倾斜。
在本申请实施例中，第二凸起133可以采用冲压工艺成型，通过在第二凸起133设置第二斜面1332，使得在对顶盖10进行冲压冲裁以形成第二凸起133的过程中，便于实现材料流动，第二凸起133可以通过对顶盖10进行一次冲压获得，从而无需使用机加工，减少了顶盖10的加工工序，从而有利于提高顶盖10的生产效率，降低成本。
在本实施例中，在顶盖10的厚度方向上，第二凸起133的高度在0.05-0.3mm范围内，也即，第二平面1331与背面112之间的距离在0.05-0.3mm范围内，例如，0.05mm、0.1mm、0.3mm等。这样，第二凸起133可以通过一次冲压成型，无需通过机加工切削，从而有利于提高顶盖10的生产效率，降低成本，同时还能够避免因机加工而产生的工件毛刺。
在本实施例中，顶盖10还包括第一加强部122和第二加强部132。第一加强部122凸设于第一安装槽121的槽底壁，第一加强部122环绕第一通孔12且连接第一安装槽121的槽侧壁。也即，第一加强部122呈环状，且环绕第一通孔12设置。在本申请实施例中，第一安装槽121可以采用冲压工艺成型，通过设置第一加强部122，增加了顶盖10在第一安装槽121处的厚度，从而可以增加顶盖10的结构强度，使得在对顶盖10进行墩压的过程中，顶盖10不容易发生变形。
示例性的，第一安装槽121包括沿顶盖10的厚度方向排布且连通的第一子安装槽1211和第二子安装槽1212。其中，第二子安装槽1212是由第一子安装槽1211的槽底壁向正面111方向凹陷形成。第一通孔12贯穿第一子安装槽1211的槽底壁和第二子安装槽1212的槽底壁。
示例性的，第一加强部122具有相互连接的第三平面1221和第一台阶面1222。第三平面1221位于第一加强部122背向第一安装槽121的槽底壁的一侧且连接第一安装槽121的槽侧壁，第一台阶面1222连接第一安装槽121的槽底壁。其中，第三平面1221即为第一子安装槽1211的槽底壁，第一台阶面1222即为第二子安装槽1212的槽侧壁。第一台阶面1222连接第一子安装槽1211的槽底壁和第二子安装槽1212的槽底壁。
示例性的，在顶盖10的厚度方向上，第一加强部122的高度H2在0.1至0.5mm范围内，也即，在Z轴方向上，第一子安装槽1211的槽底壁与第二子安装槽1212的槽底壁之间的距离在0.1至0.5mm范围内。例如，H2可以在0.2至0.3mm范围内。这样，顶盖10的结构设计较为合理，且顶盖10的强度较高。
示例性的，第一台阶面1222为斜面。由背面112向正面111方向，第一台阶面1222相对顶盖10的厚度方向朝向第一通孔12倾斜。第一台阶面1222与第三平面1221的连接处进行倒圆角处理，形成倒角R11。第一台阶面1222与第一安装槽121的槽底壁的连接处进行倒圆角处理，形成倒角R21。也即，第一台阶面1222与第一子安装槽1211的槽底壁之间也圆滑过渡，第一台阶面1222与第二子安装槽1212的槽底壁之间圆滑过渡。这样，在对顶盖10进行墩压的过程中便于材料的流动，第一子安装槽1211和第二子安装槽1212可以通过一次冲压工艺成型，而无需通过机加工切削，减少了顶盖10的加工工序，有利于提高生产效率，降低成本。示例性的，倒角R11的半径和倒角R21的半径在0.05-3mm范围内。
在本实施例中，第二加强部132凸设于第二安装槽131的槽底壁，第二加强部132环绕第二通孔13且连接第二安装槽131的槽侧壁。也即，第二加强部132呈环状，且环绕第二通孔13设置。在本申请实施例中，第二安装槽131可以采用冲压工艺成型，通过设置第二加强部132，增加了顶盖10在第二安装槽131处的厚度，从而可以增加顶盖10的结构强度，使得在对顶盖10进行墩压的过程中，顶盖10不容易发生变形。
示例性的，第二安装槽131包括沿顶盖10的厚度方向排布且连通的第三子安装槽1311和第四子安装槽1312。其中，第四子安装槽1312是由第三子安装槽1311的槽底壁向正面111方向凹陷形成。第二通孔13贯穿第三子安装槽1311的槽底壁和第四子安装槽1312的槽底壁。
示例性的，第二加强部132具有相互连接的第四平面1321和第二台阶面1322。第四平面1321位于第二加强部132背向第二安装槽131的槽底壁的一侧且连接第二安装槽131的槽侧壁，第二台阶面1322连接第二安装槽131的槽底壁。其中，第四平面1321即为第三子安装槽1311的槽底壁。第二台阶面1322即为第四子安装槽1312的槽侧壁。第二台阶面1322连接第三子安装槽1311的槽底壁和第四子安装槽1312的槽底壁。
示例性的，在顶盖10的厚度方向上，第二加强部132的高度在0.1至0.5mm范围内，也即，在Z轴方向上，第三子安装槽1311的槽底壁与第四子安装槽1312的槽底壁之间的距离在0.1至0.5mm范围内。例如，可以在0.2至0.3mm范围内。这样，顶盖10的结构设计较为合理，且顶盖10的强度较高。
示例性的，第二台阶面1322为斜面。由背面112向正面111方向，第二台阶面1322相对顶盖10的厚度方向朝向第二通孔13倾斜。第二台阶面1322与第四平面1321的连接处进行倒圆角处理，形成倒角R12。第二台阶面1322与第二安装槽131的槽底壁的连接处进行倒圆角处理，形成倒角R22。也即，第二台阶面1322与第三子安装槽1311的槽底壁之间也圆滑过渡，第二台阶面1322与第四子安装槽1312的槽底壁之间圆滑过渡。这样，在对顶盖10进行墩压的过程中便于材料的流动，第三子安装槽1311和第四子安装槽1312可以通过一次冲压工艺成型，而无需通过机加工切削，减少了顶盖10的加工工序，有利于提高生产效率，降低成本。示例性的，倒角R12的半径和倒角R22的半径在0.05-3mm范围内。
请结合参阅图4、图5和图7，图7为图4所示的端盖组件100在N处的局部放大图。
在本实施例中，顶盖10还包括第一凸台124和第二凸台134，第一凸台124和第二凸台134位于顶盖本体11的相对两端位置(沿着X轴方向排列)，分别用于与第一上塑胶和第二上塑胶配合连接。第一凸台124和第二凸台134均凸设于顶盖本体11的正面111。第一通孔12贯穿第一凸台124。第二通孔13贯穿第二凸台134。
示例性的，第一凸台124呈环状，第一凸台124的内周缘为六边形，用于与第一极柱30配合连接。第一凸台124的外周缘大致为圆形。第一凸台124具有背向正面111的第一凸台顶面1241和连接第一凸台顶面1241的第一周侧面1242，第一周侧面1242还连接顶盖本体11的正面111。第一周侧面1242为斜面，由背面112向正面111的方向，第一周侧面1242相对顶盖10的厚度方向(也即，Z轴方向)朝向第一通孔12倾斜。这样，在顶盖10上通过镦压的方式形成第一凸台124的过程中，便于实现材料往第一通孔12流动，从而减少顶盖10对冲压模具磨损，提高模具寿命以及产品良率，且能够减少金属丝的产生。
示例性的，第一周侧面1242与Z轴方向的夹角在5°至60°的范围内。第一周侧面1242与Z轴方向的夹角可以在10°至30°的范围内，例如，10°、20°、30°等。
示例性的，第二凸台134呈环状，第二凸台134的内周缘为六边形，用于与第二极柱40配合连接。第二凸台134的外周缘大致为圆形。第二凸台134具有背向正面111的第二凸台顶面1341和连接第二凸台顶面1341的第二周侧面1342，第二周侧面1342还连接顶盖本体11的正面111。第二周侧面1342为斜面，由背面112向正面111的方向，第二周侧面1342相对顶盖10的厚度方向(也即，Z轴方向)朝向第二通孔13倾斜。这样，在顶盖10上通过镦压的方式形成第二凸台134的过程中，便于实现材料往第二通孔13流动，从而减少顶盖10对冲压模具磨损，提高模具寿命以及产品良率，且能够减少金属丝的产生。
示例性的，第二周侧面1342与Z轴方向的夹角在5°至60°的范围内。第二周侧面1342与Z轴方向的夹角可以在10°至30°的范围内，例如，10°、20°、30°等。
请再次参阅图4和图5，在本实施例中，下塑胶20包括下塑胶本体21，下塑胶本体21大致为矩形薄板，沿下塑胶本体21厚度方向(Z轴方向)，其包括第一表面211和与第一表面211背对设置的第二表面212。
示例性的，下塑胶20具有第一极柱通孔22、第一收容槽221、第二极柱通孔23和第二收容槽231。第一收容槽221是由第二表面212向第一表面211方向凹陷形成，并在第一表面211形成第一卡持凸起221A。第一极柱通孔22贯穿第一收容槽221的槽底壁及第一表面211，即贯穿第一卡持凸起221A。
示例性的，第一收容槽221和第一极柱通孔22同轴设置，且靠近下塑胶本体21的一端部设置。第一极柱通孔22用于供第一极柱30穿过。第一极柱通孔22为六边形通孔，用于与第一极柱30配合连接。第一收容槽221用于收容第一压环51。
示例性的，第二收容槽231是由第二表面212向第一表面211方向凹陷形成，并在第一表面211上形成第二卡持凸起231A。第二极柱通孔23贯穿第一表面211和第二表面212，第二极柱通孔23贯穿第二收容槽231的槽底壁，即贯穿第二卡持凸起231A。
示例性的，第二收容槽231和第二极柱通孔23同轴设置，且靠近下塑胶本体21的另一端部设置。第二极柱通孔23用于供第二极柱40穿过。第二极柱通孔23为六边形通孔，用于与第二极柱40配合连接。第二收容槽231用于收容第二压环52。
在本实施例中，下塑胶20还包括第一凸出部222和第二凸出部232。第一凸出部222凸设于第一卡持凸起221A背向第一表面211的一侧表面。第一凸出部222和第一卡持凸起221A同轴设置，第一极柱通孔22贯穿第一凸出部222。第一卡持凸起221A和第一凸出部222分别用于与第一子安装槽1211和第二子安装槽1212配合连接。第二凸出部232凸设于第二卡持凸起231A背向第一表面211的一侧表面。第二凸出部232和第二卡持凸起231A同轴设置，第二极柱通孔23贯穿第二凸出部232。第二卡持凸起231A和第二凸出部232分别用于与第三子安装槽1311和第四子安装槽1312配合连接。
在本实施例中，下塑胶20还包括第一避让槽223和第二避让槽233。第一避让槽223和第二避让槽233均是由第一表面211向第二表面212方向凹陷形成。第一避让槽223围绕第一卡持凸起221A设置。第一避让槽223用于与顶盖10的第一凸起123对应设置，避让第一凸起123。第二避让槽233围绕第二卡持凸起231A设置。第二避让槽233用于与顶盖10的第二凸起133对应设置，避让第二凸起133。
请结合参阅图5、图8A和图8B，图8A为图4所示的第一极柱30和第一法兰31的结构示意图，图8B为图8A所示的第一极柱30和第一法兰31的一角度剖开后的部分结构示意图。
在本实施例中，第一极柱30至少部分为六边形柱。可以理解的是，第一极柱30可以部分为六边形柱，第一极柱30也可以全部为六边形柱。示例性的，第一极柱30包括第一部分301和第二部分302。图8B中采用虚线示意性区分了第一部分301、第二部分302和第一法兰31。第二部分302连接于第一部分301的一侧表面，且第一部分301和第二部分302同轴设置。其中，第一部分301的形状为正六边形柱，第二部分302的形状为圆柱体。在第一极柱30的高度方向(也即，Z轴方向)上，第二部分302的投影面积小于第一部分301的投影面积。其中，第一部分301用于穿设第一通孔12并与顶盖10配合连接以获得较高的抗扭强度，第二部分302用于与第一压环51配合连接。第二部分302还用于与储能装置1000的电极组件电连接。
在本实施例中，第一法兰31为圆柱体。第一法兰31位于第一部分301背向第二部分302的一侧，且连接第一部分301。第一部分301可以位于第一法兰31的中部。第一极柱30和第一法兰31为一体成型的结构件，第一极柱30和第一法兰31可以采用冲压工艺成型。示例性的，第一极柱30的第一部分301包括朝向第二部分302且连接第二部分302的第一顶面3011。第一部分301还包括依次连接的第一面3012、第二面3013、第三面3014、第四面3015、第五面3016和第六面3017。第一面3012至第六面3017均连接第一顶面3011。第一面3012至第六面3017相对第一极柱30的中心轴线O1-O1呈中心对称分布。
在本实施例中，第一面3012至第六面3017中每两个相邻面之间均进行倒圆角处理，也即，第一面3012至第六面3017中每两个相邻面之间均圆滑过渡。这样，在第一极柱30制程中，可以减轻对模具的磨损，同时有利于材料流动，提高第一极柱30的制程良率；另外，还可以减少第一极柱30冲压过程中的材料流动阻力，第一部分301的表层不容易发生破裂。示例性的，第一面3012和第二面3013的连接处进行倒圆角处理，并形成倒角R01，也即，第一面3012与第二面3013之间圆滑过渡。倒角R01的半径在0.5mm至5.0mm范围内。例如，倒角R01的半径可以在1.5mm至2.5mm范围内。
示例性的，第二面3013与第三面3014的连接处、第三面3014与第四面3015的连接处、第四面3015与第五面3016的连接处、第五面3016与第六面3017的连接处、第六面3017与第一面3012的连接处均进行倒圆角处理，具体的可以参阅第一面3012和第二面3013之间的倒角，这里不再赘述。
在本实施例中，第一顶面3011和第一面3012、第二面3013、第三面3014、第四面3015、第五面3016、第六面3017的连接处均进行倒圆角处理，也即，第一顶面3011与第一面3012、第二面3013、第三面3014、第四面3015、第五面3016、第六面3017之间均圆滑过渡。这样，可以降低第一极柱30的制程难度，有利于第一极柱30制程中的材料流动。示例性的，第一顶面3011和第一面3012的连接处形成倒角R02。倒角R02的半径在0.1mm至1mm范围内。例如，倒角R02的半径在0.25mm至0.5mm范围内。
示例性的，第一顶面3011和第二面3013的连接处、第一顶面3011和第三面3014的连接处、第一顶面3011和第四面3015的连接处、第一顶面3011和第五面3016的连接处、第一顶面3011和第六面3017的连接处均形成倒角，且倒角的半径的范围与第一顶面3011和第一面3012之间的倒角的半径的范围相同。
在本实施例中，沿第一法兰31向第一极柱30的方向(也即沿第一部分301向第二部分302的方向)，第一面3012至第六面3017中的每个面均朝向第一极柱30的中心倾斜，也即，第一面3012至第六面3017中的每个面均与Z轴呈夹角设置。此时，第一部分301的第一顶面3011的面积小于第一部分301背向第二部分302的表面的面积。这样，在第一极柱30制程中可以减轻对模具的磨损，同时有利于材料流动，提高第一极柱30的制程良率；另外，还可以减少第一极柱30冲压过程中的材料流动阻力，第一部分301不容易发生表层破裂。示例性的，第一面3012至第六面3017与Z轴的夹角在0.05°至5°范围内。例如，第一面3012至第六面3017与Z轴的夹角在1°至3°范围内。
请结合参阅图5、图9A和图9B，图9A为图4所示的第二极柱40和第二法兰41的结构示意图，图9B为图9A所示的第二极柱40和第二法兰41的一角度剖开后的部分结构示意图。在一些实施例中，第二极柱40至少部分为六边形柱。可以理解的是，第二极柱40可以部分为六边形柱，第二极柱40也可以全部为六边形柱。示例性的，第二极柱40包括第三部分401和第四部分402。图9B中采用虚线示意性区分了第三部分401、第四部分402和第二法兰41。第四部分402连接于第三部分401的一侧表面，且第三部分401和第四部分402同轴设置。第三部分401形状为正六边形柱，第四部分402的形状为圆柱体。在第二极柱40的高度方向(也即，Z轴方向)上，第四部分402的投影面积小于第三部分401的投影面积。其中，第三部分401用于穿设第二通孔13并与顶盖10配合连接以获得较高的抗扭强，第四部分402用于与第二压环52配合连接。第二部分302还用于与储能装置1000的电极组件电连接。
在本实施例中，第二法兰41为圆柱体。第二法兰41位于第三部分401背向第四部分402的一侧，且连接第三部分401。第三部分401可以位于第二法兰41的中部。第二极柱40和第二法兰41为一体成型的结构件，第二极柱40和第二法兰41可以采用冲压工艺成型。示例性的，第二极柱40的第三部分401包括朝向第四部分402连接第四部分402的第二顶面4011。第三部分401还包括依次连接的第七面4012、第八面4013、第九面4014、第十面4015、第十一面4016和第十二面4017。第七面4012至第十二面4017均连接第二顶面4011。第七面4012至第十二面4017相对第二极柱40的中心轴线O2-O2呈中心对称分布。
在本实施例中，第七面4012至第十二面4017中每两个相邻面之间均进行倒圆角处理，也即，第七面4012至第十二面4017中每两个相邻面之间均圆滑过渡。这样，在第二极柱40制程中，可以减少对模具的磨损，同时有利于材料流动，提高第二极柱40的制程良率；另外，还可以减少第二极柱40冲压过程中的材料流动阻力，第三部分401的表层不容易发生破裂。示例性的，第七面4012和第八面4013的连接处进行倒圆角处理，并形成倒角R03，也即，第七面4012与第八面4013之间圆滑过渡。倒角R03的半径在0.5mm至5.0mm范围内。例如，倒角R03的半径可以在1.5mm至2.5mm范围内。
示例性的，第八面4013与第九面4014的连接处、第九面4014与第十面4015的连接处、第十面4015与第十一面4016的连接处、第十一面4016与第十二面4017的连接处、第十二面4017与第七面4012的连接处均进行倒圆角处理，具体的可以参阅第七面4012和第八面4013之间的倒角，这里不再赘述。
在本实施例中，第二顶面4011和第七面4012、第八面4013、第九面4014、第十面4015、第十一面4016、第十二面4017的连接处均进行倒圆角处理，也即，第二顶面4011与第七面4012、第八面4013、第九面4014、第十面4015、第十一面4016、第十二面4017之间均圆滑过渡。这样，可以降低第二极柱40的制程难度，有利于第二极柱40制程中的材料流动。示例性的，第二顶面4011和第七面4012的连接处形成倒角R04。倒角R04的半径在0.1mm至1mm范围内。例如，倒角R04的半径在0.25mm至0.5mm范围内。
示例性的，第二顶面4011和第八面4013的连接处、第二顶面4011和第九面4014的连接处、第二顶面4011和第十面4015的连接处、第二顶面4011和第十一面4016的连接处、第二顶面4011和第十二面4017的连接处均形成倒角，且倒角的半径的范围与第二顶面4011和第七面4012之间的倒角的半径的范围相同。
在本实施例中，沿第二法兰41向第二极柱40的方向(也即沿第三部分401向第四部分402的方向)，第七面4012至第十二面4017中的每个面均朝向第二极柱40的中心倾斜，也即，第三部分401的第二顶面4011的面积小于第三部分401背向第四部分402的表面的面积。这样，在第二极柱40制程中，可以减少对模具的磨损，同时有利于材料流动，提高第二极柱40制程良率；另外，还可以减少第二极柱40冲压过程中的材料流动阻力，第三部分401的表层不容易发生破裂。示例性的，第七面4012至第十二面4017与Z轴的夹角在0.05°至5°范围内。例如，第七面4012至第十二面4017与Z轴的夹角在1°至3°范围内。
在其他一些实施例中，第一极柱30的至少部分和第二极柱40的至少部分也可以为四边形柱、八边形柱等多边形柱结构，或者圆形柱、异形柱等结构。可以理解的是，多边形柱结构可以是正多边形柱结构，例如正四边形柱、正八边形柱等；多边形柱结构也可以不是正多边形柱结构，例如可以通过切割去除正四边形柱的四个角，以形成具有四个短边和四个长边的八边形柱。
在其他一些实施例中，还可以通过对圆柱形的第一极柱30和第二极柱40沿高度方向进行切割形成一个或多个平面。这样，第一极柱30和第二极柱40与顶盖10配合连接时，不容易相对顶盖10转动，提高第一极柱30和第二极柱40的抗扭强度。例如，通过对圆柱形的第一极柱30和第二极柱40沿高度方向进行切割形成呈中心对称的四个平面。这样，第一极柱30和第二极柱40的抗扭转效果较好、加工工序较少。
在本实施例中，第一压环51套设于第一极柱30，且固定连接第一极柱30和下塑胶20。示例性的，第一压环51的内侧壁为圆形，用于与第一极柱30的第二部分302配合连接。第一压环51的外周缘大致为五边形且其中一边为短边。可以理解的是，第一压环51可以由矩形压环通过切割去除一个角获得。这样，第一压环51与下塑胶20连接时，第一压环51不容易相对下塑胶20和顶盖10转动，第一极柱30也不容易相对顶盖10转动，有利于提高第一极柱30的抗扭强度。
示例性的，第二压环52套设于第二极柱40，且固定连接第二极柱40和下塑胶20。示例性的，第二压环52的内侧壁为圆形，用于与第二极柱40的第四部分402配合连接。第二压环52的外侧壁大致为五边形且其中一边为短边。可以理解的是，第二压环52可以由矩形压环切割去除一个角获得。这样，第二压环52与下塑胶20连接时，第二压环52不容易相对下塑胶20和顶盖10转动，从而第二极柱40也不容易相对顶盖10转动，有利于提高第二极柱40的抗扭强度。
在本实施例中，端盖组件100还包括第一上塑胶61和第二上塑胶62。第一上塑胶61和第二上塑胶62均为环形体。第一上塑胶61用于和顶盖10固定连接，且套于第一极柱30的第一部分301和第一法兰31，也即，第一极柱30和第一法兰31通过第一上塑胶61与顶盖10连接且绝缘。第二上塑胶62用于和顶盖10固定连接，且套于第二极柱40的第三部分401和第二法兰41，也即，第二极柱40和第二法兰41通过第二上塑胶62与顶盖10连接且绝缘。
示例性的，第一上塑胶61包括第一主体部611、第一内环部612和第一外环部613。第一主体部611的外周缘呈圆形，第一主体部611具有通孔，第一内环部612围绕第一主体部611的通孔设置，且凸出与第一主体部611的一侧表面。第一主体部611的通孔和第一内环部612均为正六边形。第一外环部613环绕第一主体部611且与第一主体部611连接。第一外环部613部分凸出于第一主体部611的两侧表面，且与第一主体部611、第一内环部612形成第一限位槽614。
示例性的，第一主体部611的通孔和第一内环部612呈正六边形，用于与第一极柱30配合连接。在本申请实施例中，第一主体部611的通孔的形状和第一内环部612的形状可以对应第一极柱30的形状改变，第一主体部611的通孔和第一内环部612可以呈多边环形、圆环形或异形的环形，本申请对此不做限定。
在本实施例中，第二上塑胶62包括第二主体部621、第二内环部622和第二外环部623。第二主体部621的外周缘呈圆形，第二主体部621具有通孔，第二内环部622围绕第二主体部621的通孔设置，且凸出与第二主体部621的一侧表面。第二主体部621的通孔和第二内环部622均为正六边形。第二外环部623环绕第二主体部621且与第二主体部621连接。第二外环部623部分凸出于第二主体部621的两侧表面，且与第二主体部621、第二内环部622形成第二限位槽624。
示例性的，第二主体部621的通孔和第二内环部622呈正六边形，用于与第二极柱40配合连接。在本申请实施例中，第二主体部621的通孔的形状和第二内环部622的形状可以对应第二极柱40的形状改变，第二主体部621的通孔和第二内环部622可以呈多边环形、圆环形或异形的环形，本申请对此不做限定。
在本实施例中，端盖组件100还包括第一密封件71和第二密封件72。第一密封件71和第二密封件72均为六边形的环状弹性件，其可以为橡胶材料制成。第一密封件71和第二密封件72分别用于与第一极柱30和第二极柱40配合连接。
请结合参阅图4、图5、图10以及图11，图10为图2所示的端盖组件100的一角度剖开后的部分结构示意图，图11为图10所示的端盖组件100在P处的局部放大示意图。
在本实施例中，下塑胶20与顶盖10层叠并连接。下塑胶20的长度与顶盖10的长度相当，下塑胶20的宽度与顶盖10的宽度相当，其中允许有一定的公差范围。下塑胶20位于顶盖本体11的背面112背向正面111的一侧，且与顶盖10层叠并连接。示例性的，下塑胶20的第一表面211与顶盖本体11的背面112相对并贴合。沿顶盖10的厚度方向(Z轴方向)，下塑胶20的第一极柱通孔22与顶盖10的第一通孔12相对设置并相互连通，第二极柱通孔23与顶盖10的第二通孔13相对设置并相互连通。
示例性的，下塑胶20的第一卡持凸起221A插设于第一子安装槽1211，第一卡持凸起221A与第一子安装槽1211可以相互卡持实现相互的定位。下塑胶20的第一凸出部222插设于第二子安装槽1212，第一凸出部222与第二子安装槽1212可以相互卡持实现相互的定位。图10和图11中采用虚线示意性区分了下塑胶本体21、第一卡持凸起221A和第一凸出部222。第一加强部122与第一卡持凸起221A和第一凸出部222接触且连接。图10和图11中采用虚线示意性区分了顶盖本体11和第一加强部122。此时，顶盖10的第一凸起123位于下塑胶20的第一避让槽223内，第一收容槽221至少部分位于第一安装槽121内。图10和图11中采用虚线示意性区分了顶盖本体11和第一凸起123。
示例性的，第一极柱30穿设于第一极柱通孔22与第一通孔12。具体的，第一部分301穿设于第一通孔12和第一极柱通孔22。第一压环51套设于第一极柱30的第二部分302，并与第二部分302固定连接。第一压环51收容于下塑胶20的第一收容槽221内，并与第一收容槽221的槽壁固定连接。相比于第一极柱30为圆柱形的方案，本申请中通过将第一极柱30的至少部分设置为六边形柱(或其他多边形柱)，并将第一通孔12、第一极柱通孔22也设置成与第一极柱30对应的形状，使得第一极柱30与顶盖10配合连接时，第一极柱30不容易相对顶盖10转动，提高了第一极柱30的抗扭强度，有利于防止下塑胶20位于第一压环51和顶盖本体11之间的部分被切割。
示例性的，第一凸出部222、第一卡持凸起221A和部分下塑胶本体21位于顶盖本体11和第一极柱30之间。在垂直于端盖组件100的厚度方向的方向(也即在X轴方向和Y轴方向)上，第一压环51在下塑胶20的投影覆盖第一凸起123在下塑胶20的投影。可以理解的是，在垂直于端盖组件100的厚度方向(也即在X轴方向和Y轴方向)上，第一压环51在下塑胶20的部分投影与第一凸起123在下塑胶20的投影重合，第一压环51在下塑胶20的部分投影与第一子安装槽1211的槽侧壁在下塑胶20的部分投影重合。本申请实施例中，第一凸起123环绕第一安装槽121，增大了第一安装槽121的槽侧壁的高度，从而增大了第一安装槽121的槽侧壁的面积。当第一压环51容纳于第一安装槽121时，可以增大顶盖10与第一压环51在垂直于端盖组件100的厚度方向上的重合面积，第一压环51和第一极柱30不容易相对顶盖10转动，有利于提高第一极柱30的抗扭强度，防止下塑胶20位于第一压环51和顶盖本体11之间的第一凸出部222、第一卡持凸起221A和部分下塑胶本体21被切割。
在本实施例中，下塑胶20的第二卡持凸起231A插设于第三子安装槽1311，第二卡持凸起231A与第二子安装槽1212可以相互卡持实现相互的定位。下塑胶20的第二凸出部232插设于第四子安装槽1312，第二凸出部232与第四子安装槽1312可以相互卡持实现相互的定位。第二加强部132与第二卡持凸起231A和第二凸出部232接触且连接。此时，顶盖10的第二凸起133位于下塑胶20的第二避让槽233内，第二收容槽231至少部分位于第二安装槽131内。
示例性的，第二极柱40穿设于第二极柱通孔23与第二通孔13。具体的，第一部分301穿设于第一通孔12和第二极柱通孔23。第二压环52套设于第二极柱40的第四部分402，并与第四部分402固定连接。第二压环52收容于下塑胶20的第二收容槽231内，并与第二收容槽231的槽壁固定连接。相比于第二极柱40为圆柱形的方案，本申请中通过将第二极柱40的至少部分设置为六边形柱(或其他多边形柱)，并将第二通孔13、第二极柱通孔23也设置成与第二极柱40对应的形状，使得第二极柱40与顶盖10配合连接时，第二极柱40不容易相对顶盖10转动，提高了第二极柱40的抗扭强度，有利于防止下塑胶20位于第二压环52和顶盖本体11之间的部分被切割。
示例性的，第二凸出部232、第二卡持凸起231A和部分下塑胶本体21位于顶盖本体11和第二极柱40之间。在垂直于端盖组件100的厚度方向的方向(也即在X轴方向和Y轴方向)上，第二压环52在下塑胶20的投影覆盖第二凸起133在下塑胶20的投影。可以理解的是，在垂直于端盖组件100的厚度方向(也即在X轴方向和Y轴方向)上，第二压环52在下塑胶20的部分投影与第二凸起133在下塑胶20的投影重合，第二压环52在下塑胶20的部分投影与第三子安装槽1311的槽侧壁在下塑胶20的部分投影重合。
本申请实施例中，通过在第二安装槽131的周围设置第二凸起133，增大了第二安装槽131的槽侧壁的高度，从而增大了第二安装槽131的槽侧壁的面积。当第二压环52容纳于第二安装槽131时，可以增大顶盖10与第二压环52在垂直于端盖组件100的厚度方向上的重合面积，从而可以增大第二压环52与顶盖10的连接面积，第二压环52和第二极柱40不容易相对顶盖10转动，有利于提高第二极柱40的抗扭强度，防止下塑胶20位于第二压环52和顶盖本体11之间的部分被切割。
在本实施例中，第一上塑胶61套设于第一极柱30的周缘和第一压环51的周缘，并与顶盖本体11的正面111连接。示例性的，第一上塑胶61的第一内环部612环绕第一极柱30，且夹持在第一通孔12与第一极柱30之间。第一上塑胶61的第一外环部613套设于第一法兰31，第一法兰31与第一外环部613和第一主体部611均连接。
在本实施例中，顶盖本体11的第一凸台124位于第一上塑胶61的第一限位槽614内，第一凸台124与第一外环部613、第一主体部611和第一内环部612均连接。图10和图11中采用虚线示意性区分了顶盖本体11和第一凸台124。本申请实施例中，通过在第一通孔12的边缘设置第一凸台124，增大了第一通孔12的孔壁的高度，从而增大了第一极柱30与顶盖10的连接面积，有利于防止第一极柱30相对顶盖10发生扭转，从而减少对下塑胶20的切割。此外，在顶盖10的长度方向(也即，X轴方向)上，通过设置第二子安装槽1212，使得第二子安装槽1212的槽侧壁到第一通孔12的孔壁的距离小于第一子安装槽1211的槽侧壁到第一通孔12的孔壁的距离，也即，通过设置第一加强部122可以减小第一安装槽121的槽侧壁到第一通孔12的孔壁的距离，缩短了力臂，使得顶盖10在第一安装槽121处能够承受更大的外力，有利于提高顶盖10的结构强度。
在本实施例中，第二上塑胶62套设于第二极柱40的周缘和第二压环52的周缘，并与顶盖本体11的正面111连接。示例性的，第二上塑胶62的第二内环部622环绕第二极柱40，且夹持在第二通孔13与第二极柱40之间。第二上塑胶62的第二外环部623套设于第二法兰41，第二法兰41与第二外环部623和第二主体部621均连接。图10中采用虚线示意性区分了第一主体部611、第一内环部612和第一外环部613。
在本实施例中，顶盖本体11的第二凸台134位于第二上塑胶62的第二限位槽624内，第二凸台134与第二外环部623、第二主体部621和第二内环部622均连接。本申请实施例中，通过在第二通孔13的边缘设置第二凸台134，增大了第二通孔13的孔壁的高度，从而增大了第二极柱40与顶盖10的连接面积，有利于防止第二极柱40相对顶盖10发生扭转，从而减少对下塑胶20的切割。此外，在顶盖10的长度方向(也即，X轴方向)上，通过设置第四子安装槽1312，使得第四子安装槽1312的槽侧壁到第二通孔13的孔壁的距离小于第三子安装槽1311的槽侧壁到第二通孔13的孔壁的距离，也即，通过设置第二加强部132可以缩短力臂，顶盖10在第二安装槽131处能够承受更大的外力，有利于提高顶盖10的结构强度。
需要理解的是，第一上塑胶61和第二上塑胶62是在下塑胶20、第一极柱30、第二极柱40与顶盖10装配后，通过模内注塑成型而形成，即在形成过程中与第一极柱30、第二极柱40且与顶盖10、下塑胶20产生上述位置和连接关系；比如，第一上塑胶61的第一内环部612直接形成于第一通孔12与第一极柱30之间，且夹持在第一通孔12与第一极柱30之间；第一上塑胶61的第一主体部611直接形成于第一法兰31与第一凸台124之间，且夹持在第一法兰31与第一凸台124之间。第二上塑胶62的第二内环部622直接形成于第二通孔13与第二极柱40之间，且夹持在第二通孔13与第二极柱40之间；第二上塑胶62的第二主体部621直接形成于第二法兰41与第二凸台134之间，且夹持在第二法兰41与第二凸台134之间。
示例性的，第一密封件71位于第一极柱通孔22内，第一密封件71套设于第一上塑胶61的第一内环部612，也即，第一密封件71套设于第一极柱30，第一密封件71夹持于顶盖本体11和第一压环51之间。具体的，沿着端盖组件100的厚度方向，第一密封件71至少部分夹持于第一压环51的朝向第一法兰31的表面与顶盖本体11的背面112之间。可以理解的是，第一密封件71被压缩在第一压环51与顶盖本体11、第一上塑胶61之间，且密封第一极柱通孔22。
示例性的，第二密封件72位于第二极柱通孔23内，第二密封件72套设于第二上塑胶62的第二内环部622，也即，第二密封件72套设于第二极柱40，第二密封件72夹持于顶盖本体11和第二压环52之间。具体的，沿着端盖组件100的厚度方向，第二密封件72至少部分夹持于第二压环52的朝向第二法兰41的表面与顶盖本体11的背面112之间。可以理解的是，第二密封件72被压缩在第二压环52与顶盖本体11、第二上塑胶62之间，且密封第二极柱通孔23。
以上对本申请实施例进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的方法及其核心思想；同时，对于本领域的一般技术人员，依据本申请的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本申请的限制。

Claims (19)

  1. 一种端盖组件，其特征在于，包括顶盖、下塑胶、第一极柱以及第一压环；
    所述顶盖包括顶盖本体和第一凸起，沿所述顶盖本体的厚度方向，所述顶盖本体具有正面和与所述正面背对设置的背面，所述第一凸起凸设于所述背面，所述顶盖具有第一安装槽及第一通孔，所述第一安装槽由所述第一凸起背向所述顶盖本体的表面向所述顶盖本体凹陷，所述第一通孔贯穿所述第一安装槽的槽底壁及所述正面；
    所述下塑胶包括下塑胶本体，沿所述下塑胶本体的厚度方向，所述下塑胶本体包括第一表面和与所述第一表面背对设置的第二表面；所述下塑胶具有第一收容槽，所述第一收容槽是由所述第二表面向所述第一表面方向凹陷形成；
    所述下塑胶位于所述背面背向所述正面的一侧，且与所述顶盖层叠并连接，所述第一收容槽至少部分位于所述第一安装槽内，所述第一极柱穿设于所述第一通孔；所述第一压环套设于所述第一极柱且与所述第一极柱固定连接，所述第一压环至少部分位于所述第一收容槽内且与所述第一收容槽的槽壁固定连接；
    在垂直于所述端盖组件的厚度方向的方向上，所述第一压环在所述下塑胶的投影覆盖所述第一凸起在所述下塑胶的投影。
  2. 根据权利要求1所述的端盖组件，其特征在于，所述第一凸起具有相互连接的第一平面和第一斜面，所述第一平面连接所述第一安装槽的槽侧壁，所述第一斜面连接所述背面；
    由所述正面向所述背面的方向，所述第一斜面相对所述顶盖的厚度方向朝向所述第一通孔倾斜。
  3. 根据权利要求2所述的端盖组件，其特征在于，在所述顶盖的厚度方向上，所述第一凸起的高度H1在0.05-0.3mm范围内。
  4. 根据权利要求1至3中任一项所述的端盖组件，其特征在于，所述顶盖还包括第一加强部，所述第一加强部凸设于所述第一安装槽的槽底壁，所述第一加强部环绕所述第一通孔且连接所述第一安装槽的槽侧壁。
  5. 根据权利要求4所述的端盖组件，其特征在于，在所述顶盖的厚度方向上，所述第一加强部的高度H2在0.1至0.5mm范围内。
  6. 根据权利要求4所述的端盖组件，其特征在于，所述第一加强部具有相互连接的第三平面和第一台阶面，所述第三平面位于所述第一加强部背向第一安装槽的槽底壁的一侧且连接所述第一安装槽的槽侧壁，所述第一台阶面连接所述第一安装槽的槽底壁；
    所述第一台阶面与所述第三平面的连接处形成倒角R11，所述第一台阶面与所述第一安装槽的槽底壁的连接处形成倒角R21。
  7. 根据权利要求6所述的端盖组件，其特征在于，所述倒角R11的半径和所述倒角R21的半径均在0.05-3mm范围内。
  8. 根据权利要求1至3中任一项所述的端盖组件，其特征在于，所述顶盖还包括第一凸台，所述第一凸台凸设于所述正面，所述第一通孔还贯穿所述第一凸台；
    所述第一凸台具有第一周侧面，由所述背面向所述正面的方向，所述第一周侧面相对所述顶盖的厚度方向朝向所述第一通孔倾斜。
  9. 根据权利要求8所述的端盖组件，其特征在于，所述第一周侧面与所述顶盖的厚度方向的夹角在5°至60°的范围内。
  10. 根据权利要求1至3中任一项所述的端盖组件，其特征在于，所述第一极柱至少部分为多边形柱，所述第一通孔的形状与所述第一极柱的形状相匹配。
  11. 根据权利要求10所述的端盖组件，其特征在于，所述第一极柱包括第一部分和第二部分，所述第二部分连接于所述第一部分的一侧表面，所述第一部分穿设于所述第一通孔，所述第一部分为六边形柱，所述第二部分与所述第一压环配合连接。
  12. 根据权利要求11所述的端盖组件，其特征在于，所述第一部分包括朝向所述第二部分且连接所述第二部分的第一顶面，所述第一部分还包括依次连接的第一面、第二面、第三面、第四面、第五面和第六面，所述第一面至所述第六面均连接所述第一顶面；所述第一面至所述第六面相对所述第一极柱的中心轴线呈中心对称分布；
    所述第一面和所述第二面的连接处形成倒角R01，所述倒角R01的半径在0.5mm至5.0mm范围内。
  13. 根据权利要求12所述的端盖组件，其特征在于，所述第一顶面和所述第一面的连接处形成倒角R02，所述倒角R02的半径在0.1mm至1mm范围内。
  14. 根据权利要求12或13所述的端盖组件，其特征在于，沿所述第一部分向第二部分的方向，所述第一面朝向所述第一极柱的中心倾斜。
  15. 根据权利要求14所述的端盖组件，其特征在于，所述第一面与所述顶盖的厚度方向的夹角在0.05°至5°范围内。
  16. 根据权利要求1至3中任一项所述的端盖组件，其特征在于，所述下塑胶还包括第一避让槽，所述第一避让槽是由所述第一表面向第二表面方向凹陷形成，所述第一避让槽与所述第一凸起对应设置。
  17. 根据权利要求1至3中任一项所述的端盖组件，其特征在于，所述第一收容槽在所述第一表面形成第一卡持凸起，所述下塑胶还包括第一凸出部，所述第一凸出部凸设于所述第一卡持凸起背向所述第一表面的一侧表面；
    所述第一安装槽包括沿所述顶盖的厚度方向排布且连通的第一子安装槽和第二子安装槽，所述第一卡持凸起插设于所述第一子安装槽，所述第一凸出部插设于所述第二子安装槽。
  18. 一种储能装置，其特征在于，包括壳体和如权利要求1至17中任一项所述的端盖组件，所述端盖组件安装于所述壳体且密封所述壳体的开口。
  19. 一种用电设备，其特征在于，包括如权利要求18所述的储能装置，所述储能装置用于储存电能。
PCT/CN2024/135629 2024-03-27 2024-11-29 端盖组件、储能装置及用电设备 Pending WO2025200527A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202410361424.4A CN118299734B (zh) 2024-03-27 2024-03-27 端盖组件、储能装置及用电设备
CN202410361424.4 2024-03-27

Publications (1)

Publication Number Publication Date
WO2025200527A1 true WO2025200527A1 (zh) 2025-10-02

Family

ID=91673783

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2024/135629 Pending WO2025200527A1 (zh) 2024-03-27 2024-11-29 端盖组件、储能装置及用电设备

Country Status (4)

Country Link
US (1) US20250309418A1 (zh)
EP (1) EP4625636B1 (zh)
CN (1) CN118299734B (zh)
WO (1) WO2025200527A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118299734B (zh) * 2024-03-27 2025-10-31 厦门海辰储能科技股份有限公司 端盖组件、储能装置及用电设备
CN119208858B (zh) * 2024-11-29 2025-02-28 深圳海辰储能科技有限公司 储能装置及用电设备
CN120879093A (zh) * 2025-07-19 2025-10-31 江苏普正精密科技有限公司 电池盖板组件组装工艺及电池盖板组件

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160093838A1 (en) * 2014-09-25 2016-03-31 Samsung Electronics Co., Ltd. Flexible electrochemical device including electrode assembly
CN216054933U (zh) * 2021-09-26 2022-03-15 银隆新能源股份有限公司 动力电池的顶盖组件
CN115995643A (zh) * 2023-02-09 2023-04-21 深圳海润新能源科技有限公司 端盖组件、储能装置及用电设备
CN116487786A (zh) * 2023-05-31 2023-07-25 湖北亿纬动力有限公司 顶盖组件及电池
CN117219934A (zh) * 2023-11-07 2023-12-12 深圳海辰储能科技有限公司 端盖组件、储能装置及用电设备
CN117543143A (zh) * 2024-01-09 2024-02-09 深圳海辰储能科技有限公司 端盖组件、储能装置及用电设备
CN118299734A (zh) * 2024-03-27 2024-07-05 厦门海辰储能科技股份有限公司 端盖组件、储能装置及用电设备

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6175758B2 (ja) * 2011-11-29 2017-08-09 株式会社Ｇｓユアサ 蓄電素子
CN108847459B (zh) * 2018-06-04 2021-08-31 常州瑞德丰精密技术有限公司 表面免焊接顶盖组装工艺
CN212366065U (zh) * 2020-04-26 2021-01-15 东莞塔菲尔新能源科技有限公司 一种电池顶盖装配结构
CN212967854U (zh) * 2020-10-13 2021-04-13 厦门海辰新能源科技有限公司 一种锂电池的顶盖结构
CN114361665B (zh) * 2021-11-23 2022-07-26 宁波震裕汽车部件有限公司 一种动力电池顶盖板结构
CN116799443B (zh) * 2023-08-16 2023-12-26 深圳海辰储能控制技术有限公司 端盖组件、储能装置及储能系统
CN116799385A (zh) * 2023-08-16 2023-09-22 深圳海辰储能控制技术有限公司 端盖组件、储能装置和用电设备
CN117219933B (zh) * 2023-11-07 2024-03-08 深圳海辰储能科技有限公司 一种顶盖组件、二次电池、电池模组及用电设备

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160093838A1 (en) * 2014-09-25 2016-03-31 Samsung Electronics Co., Ltd. Flexible electrochemical device including electrode assembly
CN216054933U (zh) * 2021-09-26 2022-03-15 银隆新能源股份有限公司 动力电池的顶盖组件
CN115995643A (zh) * 2023-02-09 2023-04-21 深圳海润新能源科技有限公司 端盖组件、储能装置及用电设备
CN116487786A (zh) * 2023-05-31 2023-07-25 湖北亿纬动力有限公司 顶盖组件及电池
CN117219934A (zh) * 2023-11-07 2023-12-12 深圳海辰储能科技有限公司 端盖组件、储能装置及用电设备
CN117543143A (zh) * 2024-01-09 2024-02-09 深圳海辰储能科技有限公司 端盖组件、储能装置及用电设备
CN118299734A (zh) * 2024-03-27 2024-07-05 厦门海辰储能科技股份有限公司 端盖组件、储能装置及用电设备

Also Published As

Publication number Publication date
EP4625636A1 (en) 2025-10-01
EP4625636B1 (en) 2026-04-01
US20250309418A1 (en) 2025-10-02
CN118299734B (zh) 2025-10-31
CN118299734A (zh) 2024-07-05

Similar Documents

Publication Publication Date Title
WO2025200527A1 (zh) 端盖组件、储能装置及用电设备
CN117543143B (zh) 端盖组件、储能装置及用电设备
CN116780067B (zh) 储能装置及用电设备
CN118231896B (zh) 端盖组件、储能装置及用电设备
CN116799385A (zh) 端盖组件、储能装置和用电设备
WO2025102868A1 (zh) 顶盖组件、储能装置及储能系统
CN116742229B (zh) 储能装置及用电设备
CN116544571B (zh) 顶盖组件、储能装置和用电设备
EP4625621A1 (en) Terminal-post assembly, energy-storage apparatus, and electricity-consumption device
CN116742226B (zh) 端盖组件、储能装置和用电设备
CN117039287A (zh) 端盖组件、储能装置及用电设备
WO2024159641A1 (zh) 一种电池、电池模组以及用电设备
CN115472843A (zh) 集流构件、电池和电池制造方法
CN117497975B (zh) 端盖组件、储能装置、用电设备及注液方法
CN117855709B (zh) 端盖组件、储能装置及用电设备
CN116799443B (zh) 端盖组件、储能装置及储能系统
CN116154426B (zh) 端盖组件、储能装置和用电设备
WO2024179190A1 (zh) 端盖组件、电池和储能装置
WO2024041214A1 (zh) 一种电池盖板组件、电池和电力系统
WO2025010678A1 (zh) 端盖组件、储能装置和用电设备
CN218334035U (zh) 一种电芯极耳转接结构和方形电芯
EP4583266A1 (en) Energy-storage device and electricity-consumption apparatus
CN223993312U (zh) 电池单体、电池装置以及用电装置
CN223333865U (zh) 一种电池外壳、储能装置及用电设备
CN223378395U (zh) 转接片、电池、储能装置及用电设备

Legal Events

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

Ref document number: 24932837

Country of ref document: EP

Kind code of ref document: A1