WO2025200528A1 - 极柱组件、储能装置及用电设备 - Google Patents

极柱组件、储能装置及用电设备

Info

Publication number
WO2025200528A1
WO2025200528A1 PCT/CN2024/135634 CN2024135634W WO2025200528A1 WO 2025200528 A1 WO2025200528 A1 WO 2025200528A1 CN 2024135634 W CN2024135634 W CN 2024135634W WO 2025200528 A1 WO2025200528 A1 WO 2025200528A1
Authority
WO
WIPO (PCT)
Prior art keywords
pole
component
hole
flange
top cover
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/CN2024/135634
Other languages
English (en)
French (fr)
Inventor
肖和攀
金东明
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 WO2025200528A1 publication Critical patent/WO2025200528A1/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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/74—Terminals, e.g. extensions of current collectors
    • H01G11/76—Terminals, e.g. extensions of current collectors specially adapted for integration in multiple or stacked hybrid or EDL capacitors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • 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
    • H01M50/10—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
    • H01M50/147—Lids or covers
    • H01M50/155—Lids or covers characterised by the material
    • H01M50/164—Lids or covers characterised by the material having a layered structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—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
    • H01M50/50—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
    • 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
    • H01M50/562—Terminals characterised by the 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/564—Terminals characterised by their manufacturing process
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6553—Terminals or leads
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/10—Batteries in stationary systems, e.g. emergency power source in plant
    • 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

  • connection interface between the first component and the second component of the first pole is a wavy interface, so that when the first pole is in operation, the connection interface between the first component and the second component can generate heat evenly, thereby avoiding the problem of concentrated heating at the connection interface caused by the different materials of the first component and the second component.
  • the end cover assembly includes a top cover, a lower plastic, and the pole assembly as described above;
  • the top cover has a first through hole
  • the lower plastic has a first pole through hole
  • the lower plastic is located on one side of the top cover, and is stacked and connected to the top cover
  • the first pole through hole is arranged opposite to the first through hole
  • the first pole is passed through the first through hole and the first pole through hole;
  • the shape of the first through hole and the shape of the first pole through hole match the shape of the first part of the first pole.
  • the first part is used to penetrate the first through hole and the first pole through hole and to be connected with the top cover.
  • the first pole is set to a polygonal column, and the shape of the first through hole and the shape of the first pole through hole are also set to a shape corresponding to the first pole.
  • the first pole is not easy to rotate relative to the top cover, which improves the torsional strength of the first pole and helps prevent the part of the lower plastic located between the first pole and the top cover body from being cut.
  • the present application also provides a method for manufacturing a first pole of a pole assembly, wherein the pole assembly includes a first pole, the first pole including a first component and a second component that are stacked and connected, the first component and the second component being made of different materials, and the connection interface between the first component and the second component being a curved surface;
  • the preparation method includes:
  • S100 performs blanking on the copper-aluminum composite plate to form a first blank
  • FIG1 is a diagram illustrating an application scenario of an energy storage device provided in an embodiment of the present application.
  • FIG3 is a schematic structural diagram of the end cover assembly shown in FIG2 ;
  • FIG4 is a partial structural exploded schematic diagram of the end cap assembly shown in FIG3 ;
  • FIG5 is a partial exploded schematic diagram of the end cap assembly shown in FIG3 from another angle
  • FIG6A is a schematic structural diagram of the first pole and the first flange shown in FIG4 ;
  • FIG7B is a schematic diagram of a partial structure of the second pole and the second flange shown in FIG7A after being cut at an angle;
  • FIG8 is a partial enlarged view of the end cover assembly shown in FIG4 at position M;
  • FIG9 is a schematic diagram of a partial structure of the end cap assembly shown in FIG2 after being cut away at an angle;
  • FIG10 is a schematic diagram of the manufacturing steps of the first pole and the first flange shown in FIG6A in some embodiments;
  • FIG11 is a diagram illustrating a manufacturing process of the first pole and the first flange shown in FIG6A in some embodiments
  • FIG12 is a schematic diagram of the first pole and the first flange shown in FIG11 in one state during the manufacturing process
  • FIG13 is a schematic diagram of the first pole and the first flange shown in FIG11 in another state during the manufacturing process
  • 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 wind energy conversion device 3000 (wind turbine) can convert wind energy into electric energy.
  • 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. Among them, the transmission of electric energy can be carried out using high-voltage cables.
  • 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 embodiment of the present application is described by taking the energy storage device 1000 as a multi-core battery as an example.
  • 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.
  • the X-axis direction, the Y-axis direction, and the Z-axis direction are perpendicular to each other.
  • the directional terms such as “upper” and “lower” mentioned in the description of the embodiments of the present application are described based on the orientation shown in FIG2 of the specification, with the direction toward the positive Z-axis being “upper” and the direction toward the negative Z-axis being “lower”. They do not constitute a limitation on the actual application scenario of the energy storage device 1000.
  • the terms “same” and “perpendicular” used in the following text are subject to certain tolerances.
  • 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 first pole 30 is a negative pole and the first flange 31 is a negative flange.
  • the first pole 30 is a composite pole, and the first pole 30 and the first flange 31 together constitute a pole assembly. It is understandable that the composite pole includes at least two different materials.
  • the composite pole can be formed by a stamping process using a composite plate containing at least two different materials, or by injection molding using at least two different materials. The present application does not limit the structure and molding process of the composite pole.
  • the second pole 40 can be a composite pole, or it can contain only one material.
  • 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, that is, the first through hole 12 and the second through hole 13 both pass through 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 first pole 30 is at least partially hexagonal. It is understood that the first pole 30 may be partially or entirely hexagonal.
  • the first pole 30 includes a first portion 301 and a second portion 302.
  • FIG6B uses dashed lines 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 and second portions 301, 302 are coaxially arranged.
  • the first portion 301 is a hexagonal.
  • the first portion 301 may be a regular hexagonal pole, with the first portion 301 being centrosymmetrical with respect to the central axis O1-O1 of the first pole 30.
  • the second portion 302 is 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 achieve high 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. In some examples, the second portion 302 can be electrically connected to the electrode assembly of the energy storage device 1000 via a connecting piece.
  • the first flange 31 is a cylinder.
  • the first flange 31 is used to connect to the first busbar.
  • the first busbar can be a negative busbar.
  • the first flange 31 is located on the side of the first part 301 facing away from the second part 302 and is connected to the first part 301.
  • the first part 301 can be located in the middle of the first flange 31.
  • the first pole 30 and the first flange 31 are integrally formed structural parts.
  • the first pole 30 and the first flange 31 can be formed using a stamping process. In this way, the electrical conductivity between the first pole 30 and the first flange 31 is better and it is not easy to cause concentrated heat problems, and the molding process of the first pole 30 and the first flange 31 is relatively simple and low cost.
  • the first electrode 30 includes a stacked and connected first member 33 and a second member 34.
  • the first member 33 and the second member 34 are arranged along the thickness direction (Z-axis direction) of the first electrode 30.
  • the first member 33 is used to connect to the electrode assembly of the energy storage device 1000.
  • the second member 34 is connected to the first flange 31 on a side facing away from the first member 33.
  • the second member 34 and the first flange 31 are integrally formed structural components.
  • the first portion 301 of the first electrode 30 is composed of a portion of the first component 33 and a portion of the second component 34. That is, the first portion 301 includes a portion of the first component 33 and a portion of the second component 34.
  • the second portion 302 of the first electrode 30 can be composed of another portion of the first component 33 and a portion of the second component 34. That is, the second portion 302 includes another portion of the first component 33 and another portion of the second component 34.
  • the portion of the first component 33 in the second portion 302 is used to connect the electrode assembly of the energy storage device 1000.
  • the first portion 301 is composed of a portion of the first component 33 and all of the second component 34.
  • the first portion 301 includes a portion of the first component 33 and all of the second component 34.
  • the second portion 302 of the first electrode 30 can also be formed solely of the first component 33, that is, the second portion 302 includes only another portion of the first component 33.
  • the material of the first component 33 is different from the material of the second component 34 .
  • the material of the second component 34 is the same as the material of the first flange 31 .
  • the material of the first component 33 is copper. It is understood that the connecting piece used to electrically connect the electrode assembly and the first pole 30 in the energy storage device 1000 is generally made of copper.
  • the connecting piece used to electrically connect the electrode assembly and the first pole 30 in the energy storage device 1000 is generally made of copper.
  • the portion of the first component 33 in the second portion 302 is connected to the electrode assembly of the energy storage device 1000 via the connecting piece, because both the first component 33 and the connecting piece are made of copper, the laser welding between the first pole 30 and the connecting piece is more reliable, and the first pole 30 is not easily detached from the connecting piece. This ensures electrical conductivity between the first pole 30 and the electrode assembly within the energy storage device 1000, which helps improve the reliability of the energy storage device 1000.
  • the material of the first member 33 is the same as the material of the connecting piece used to connect the electrode assembly and the second portion 302 within the energy storage device 1000. Therefore, when the material of the connecting piece is changed (for example, using a metal material other than copper), the material of the first member 33 can be changed accordingly.
  • the second component 34 and the first flange 31 are both made of aluminum. It is understood that to reduce costs, the first busbar of the battery is generally made of aluminum. When the first flange 31 is connected to the first busbar, since both the first flange 31 and the first busbar are made of aluminum, the laser welding between the first flange 31 and the first busbar is reliable, and the first flange 31 is not likely to fall off the first busbar. This ensures electrical conductivity between the first pole 30 and the first busbar, which is beneficial for improving the reliability of the energy storage device 1000.
  • the material of the second component 34 and the material of the first flange 31 are the same as the material of the first busbar. Therefore, when the material of the first busbar is changed (for example, using a metal material other than aluminum), the material of the second component 34 and the material of the first flange 31 can be changed accordingly.
  • the copper layer extends from the second portion 302 to the first portion 301.
  • the copper area of the first pole 30 is larger, and the first pole 30 has better electrical conductivity.
  • increasing the copper area of the first pole 30 and reducing the aluminum area prevents the first pole 30 from heating easily, which helps improve the reliability of the energy storage device 1000.
  • connection interface between the first component 33 and the second component 34 is a curved surface. It is understandable that the present application sets the connection interface between the first component 33 and the second component 34 as a wavy interface, so that when the first pole 30 is working, the connection interface between the first component 33 and the second component 34 can generate heat evenly, thereby avoiding the problem of concentrated heating of the connection interface caused by the different materials of the first component 33 and the second component 34.
  • the contact surface between the first component 33 and the second component 34 in the embodiment of the present application is a curved surface
  • the contact area between the first component 33 and the second component 34 is larger
  • the conductivity between the first component 33 and the second component 34 is better (that is, the contact area between the copper layer and the aluminum layer is larger, and the conductivity between the copper layer and the aluminum layer is better), so that the reliability of the energy storage device 1000 is better.
  • the first portion 301 of the first pole 30 includes a first top surface 3011 facing and connected to the second portion 302.
  • the first portion 301 also includes six first side surfaces 3012 connected in sequence, each of which is connected to the first top surface 3011.
  • the six first side surfaces 3012 are centrally symmetrically distributed about the central axis O1-O1 of the first pole 30.
  • the first top surface 3011 is a side surface of the first member 33 away from the first flange 31. A portion of each of the six first side surfaces 3012 is located on the first member 33, and another portion of each of the six first side surfaces 3012 is located on the second member 34.
  • the first member 33 includes a portion of each first side surface 3012 of the first portion 301
  • the second member 34 includes another portion of each first side surface 3012 of the first portion 301.
  • the length of the first member 33 at the junction of two adjacent first side surfaces 3012 is greater than the length of the first member 33 at each first side surface 3012.
  • the copper area at the junction of two adjacent first side surfaces 3012 is greater than the copper area of each first side surface 3012. It is understood that because copper heats slower than aluminum, increasing the copper area and reducing the aluminum area at the junction of two adjacent first side surfaces 3012 reduces heat generation at the junction of two adjacent first side surfaces 3012, thereby improving the reliability of the energy storage device 1000.
  • the corners between two adjacent first side surfaces 3012 among the six first side surfaces 3012 are all rounded, that is, there is a smooth transition between two adjacent first side surfaces 3012 among the six first side surfaces 3012.
  • the wear on the mold can be reduced, and at the same time, it is beneficial to the flow of material and the manufacturing yield of the first pole 30 is improved; in addition, the material flow resistance during the stamping process of the first pole 30 can be reduced, and the first part 301 is not prone to the copper layer breaking, resulting in the formation of an aluminum layer and an aluminum powder copper layer.
  • connection between two adjacent first side surfaces 3012 is rounded to form a chamfer R01, that is, there is a smooth transition between two adjacent first side surfaces 3012 among the six first side surfaces 3012.
  • 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 first top surface 3011 and the first side surface 3012 is chamfered.
  • the first top surface 3011 and each of the six first side surfaces 3012 are chamfered, that is, there is a smooth transition between the first top surface 3011 and each first side surface 3012. In this way, the difficulty of the process of the first pole 30 can be reduced, which is conducive to the flow of materials in the process of the first pole 30.
  • a chamfer R02 is formed at the connection between the first top surface 3011 and the first side surface 3012.
  • the radius of the chamfer R02 is in the range of 0.1mm to 1mm.
  • the radius of the chamfer R02 is in the range of 0.25mm to 0.5mm.
  • the first side surface 3012 is inclined toward the center of the first pole 30 along the direction from the first flange 31 toward the first pole 30 (i.e., along the direction from the first portion 301 toward the second portion 302).
  • each of the six first side surfaces 3012 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 pole 30, facilitates material flow, and improves the manufacturing yield of the first pole 30.
  • Figure 7A is a schematic diagram of the structure of the second pole 40 and the second flange 41 shown in Figure 4
  • Figure 7B is a schematic diagram of the partial structure of the second pole 40 and the second flange 41 shown in Figure 7A after being cut at an angle.
  • the second pole 40 is at least partially a hexagonal pole. It is understood that the second pole 40 can be partially a hexagonal pole, or the second pole 40 can be entirely a hexagonal pole.
  • the second pole 40 includes a third portion 401 and a fourth portion 402.
  • dotted lines are used to schematically distinguish the third portion 401, the fourth portion 402, and the second flange 41.
  • the fourth portion 402 is connected to a side surface of the third portion 401, and the third portion 401 and the fourth portion 402 are coaxially arranged.
  • the fourth portion 402 can be electrically connected to the electrode assembly of the energy storage device 1000.
  • the third part 401 is a hexagonal column.
  • the third part 401 can be a regular hexagonal column, and the third part 401 is a centrally symmetrical structure relative to the central axis O2-O2 of the second pole 40.
  • the fourth part 402 is a cylinder. In the height direction of the second pole 40 (that is, the Z-axis direction), the projected area of the fourth part 402 is smaller than the projected area of the third part 401.
  • the third part 401 is used to penetrate the second through hole 13 and cooperate with the top cover 10 to obtain higher torsional strength, and the fourth part 402 is used to cooperate with the second pressure ring 52.
  • the second part 302 is also used to be electrically connected to the electrode assembly of the energy storage device 1000.
  • the second flange 41 is cylindrical. It is used to connect to the second busbar.
  • the second busbar can be a positive busbar.
  • the second flange 41 is located on the side of the third portion 401 facing away from the fourth portion 402 and connects 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.
  • third portion 401 of second pole 40 includes a second top surface 4011 connected to fourth portion 402 and facing toward fourth portion 402.
  • Third portion 401 also includes six second side surfaces 4012 connected in sequence, each of which is connected to second top surface 4011.
  • the six second side surfaces 4012 are centrally symmetrically distributed with respect to a central axis O2-O2 of second pole 40.
  • the corners between adjacent pairs of the six second side surfaces 4012 are rounded, that is, the transition between adjacent pairs of the six second side surfaces 4012 is smooth. 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.
  • two adjacent second side surfaces 4012 are rounded to form a chamfer R03, that is, a smooth transition is formed between two adjacent second side surfaces 4012 among the six second side surfaces 4012.
  • 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 second side surface 4012 is inclined toward the center of the second pole 40, that is, the area of the second top surface 4011 of the third part 401 is smaller than the area of the surface of the third part 401 facing away from the fourth part 402.
  • the wear on the mold can be reduced, while at the same time being beneficial to the flow of material and improving the yield rate of the manufacturing process 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 less likely to crack.
  • the angle between the second side surface 4012 and the Z axis is in the range of 0.05° to 5°.
  • the angle between the second side surface 4012 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 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 body 20 has a first pole through-hole 22, a first receiving groove 221, a second pole 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 pole through-hole 22 extends through the bottom wall of the first receiving groove 221 and the first surface 211. In other words, the first pole through-hole 22 extends through the lower plastic body 21 and the first retaining protrusion 221A.
  • the first pole through-hole 22 can be understood as a pole through-hole.
  • 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 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.
  • FIG. 9 is a partial structural schematic diagram of the end cover assembly 100 shown in FIG. 2 after being cut at an angle.
  • 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 holding protrusion 221A of the lower plastic 20 is inserted into the first mounting groove 121, and the first holding protrusion 221A and the first mounting groove 121 can be mutually held to achieve mutual positioning.
  • the first pole 30 is passed through the first pole through hole 22 and the first through hole 12.
  • the first part 301 is passed through the first through hole 12 and the first pole through hole 22.
  • the first pressure ring 51 is sleeved on the second part 302 of the first pole 30 and is fixedly connected to the second part 302.
  • the first pressure ring 51 is received in the first receiving groove 221 of the lower plastic 20 and is fixedly connected to the groove wall of the first receiving groove 221.
  • the second retaining protrusion 231A of the lower plastic 20 is inserted into the second mounting groove 131.
  • the second retaining protrusion 231A and the second mounting groove 131 can be mutually retained to achieve mutual positioning.
  • the second pole 40 is inserted into the second pole through hole 23 and the second through hole 13.
  • the third portion 401 is inserted into the second through hole 13 and the second pole through hole 23.
  • the second pressure ring 52 is sleeved on the fourth portion 402 of the second pole 40 and fixedly connected to the fourth portion 402.
  • the second pressure ring 52 is received in the second receiving groove 231 of the lower plastic 20 and fixedly connected to the groove wall of the second receiving groove 231.
  • 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, which is connected to the second outer ring portion 623 and the second main body 621.
  • dotted lines are used to schematically distinguish the second main body 621, the second inner ring portion 622, and the second outer ring portion 623.
  • 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.
  • 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 above primarily describes the structures of the various components of the energy storage device 1000 (including the top cover 10, lower plastic 20, first pole 30, second pole 40, etc.) and the connections between them.
  • the first pole 30 and first flange 31 can be formed into an integrally formed structural component through a stamping process.
  • the first pole 30 also known as a composite pole
  • the first pole 30 includes a first component 33 and a second component 34 made of different materials.
  • the following describes the molding process for the first pole 30 and first flange 31 (also known as the molding process for the pole assembly) in conjunction with the relevant figures.
  • the first blank 30a is a regular hexagonal column, which makes the blanking positions on the copper-aluminum composite plate closer to each other, so that the copper-aluminum composite plate can have more blanking positions, and the material utilization rate of the copper-aluminum composite plate can be improved.
  • the copper layer of the first blank 30a under the extrusion of external force, the copper layer of the first blank 30a is crushed and flows in all directions, and the thickness of the first blank 30a is reduced, so that the thickness of the second blank 30b formed after S200 is less than the thickness of the first blank 30a, and the thickness of the copper layer of the second blank 30b is greater than or equal to the thickness of the copper layer of the first blank 30a.
  • the copper layer of the first pole 30 can extend from the second part 302 to the first part 301, so that the area of the copper layer of the first pole 30 is larger and the conductivity of the first pole 30 is better.
  • the heating rate of copper is lower than the heating rate of aluminum, by increasing the area of the copper material of the first pole 30 and reducing the area of the aluminum material, the first pole 30 is not easily heated, which is beneficial to improving the reliability of the energy storage device 1000.
  • the second portion 302 is cylindrical.
  • the outer surface of the second portion 302 is made of copper.
  • both the second portion 302 and the connecting tab are made of copper, the laser welding between the second portion 302 and the connecting tab is reliable, and the second portion 302 is unlikely to fall off the connecting tab. This ensures electrical conductivity between the first electrode 30 and the electrode assembly within the energy storage device 1000, thereby improving the reliability of the energy storage device 1000.
  • the second blank 30b is stamped to form the second member 34 of the first pole 30 (or the first portion 301 of the first pole 30) and the third portion 31a connected to the second member 34 on the second blank 30b. This forms the third blank 30c.
  • the manufacturing process for the second member 34 of the first pole 30 (or the first portion 301 of the first pole 30) is simple and has a high process yield. In Figure 11, dashed lines schematically distinguish the first portion 301, the second portion 302, and the third portion 31a.
  • the third portion 31a is cut to form a cylindrical shape, thereby forming the first flange 31.
  • the first pole 30 and the first flange 31 are formed through at least two stamping processes.
  • the first pole 30 and the first flange 31 are formed through two stamping processes.
  • the forming process of the first flange 31 is performed after the forming process of the first pole 30. This simplifies the forming process of the first flange 31 and improves the forming yield of the first pole 30 and the first flange 31.
  • the material of the first flange 31 is the same as that of the second component 34, and both are aluminum. Therefore, when the first flange 31 is connected to the first busbar, the laser welding between the first flange 31 and the first busbar is highly reliable, as both are aluminum. The first flange 31 is unlikely to fall off the first busbar, thereby ensuring electrical conductivity between the first flange 31 and the first busbar and improving the reliability of the energy storage device 1000.
  • the first pole 30 and the first flange 31 may be cleaned to remove dust, impurities, and metal chips on the surfaces of the first pole 30 and the first flange 31 to prevent dust, impurities, and metal chips from affecting the conductive properties of the first pole 30 and the first flange 31, thereby affecting the reliability of the energy storage device 1000.
  • Figure 12 is a schematic diagram of the first pole 30 and first flange 31 shown in Figure 11 during one state of the manufacturing process
  • Figure 13 is a schematic diagram of the first pole 30 and first flange 31 shown in Figure 11 during another state of the manufacturing process.
  • Figure 12 illustrates the first blank 30a before cold heading and mold closing
  • Figure 13 illustrates the first blank 30a after cold heading and mold closing to form the second blank 30b.
  • the copper layer 33a of the first blank 30a is crushed and flows around under the cooperation of the punch and the die, forming the second blank 30b.
  • the thickness of the second blank 30b is less than the thickness of the first blank 30a.
  • the maximum thickness of the copper layer of the first blank 30a is less than or equal to the maximum thickness of the copper layer of the second blank 30b. That is, the copper layer coverage area of the second blank 30b is greater than or equal to the copper layer coverage area of the first blank 30a.
  • the copper layer of the first pole 30 can extend from the second part 302 to the first part 301, so that the area of the copper layer of the first pole 30 is larger and the conductive performance of the first pole 30 is better.
  • the heating rate of copper is lower than the heating rate of aluminum, by increasing the copper area of the first pole 30 and reducing the aluminum area, the first pole 30 is not easily heated, which is beneficial to improving the reliability of the energy storage device 1000.
  • Figure 14 is a schematic diagram of another state during the manufacturing process of the first pole 30 and the first flange 31 shown in Figure 11.
  • Figure 14 shows the state where the second blank 30b is formed into the third blank 30c after cold heading and mold closing.
  • a relatively high pressure is applied to extrude the aluminum layer of the second blank 30b.
  • the aluminum layer of the second blank 30b in cooperation with the convex and concave diaphragms, collapses and flows in all directions, forming the third blank 30c.
  • the pressure used to extrude the second blank 30b is within a range of 30-50 tons, for example, 40 tons.
  • the thickness of the third blank 30c is less than that of the second blank 30b.
  • the third blank 30c includes a stacked and connected first component 33 and second component 34.
  • the materials of the first component 33 and the second component 34 are different, and the interface between the first component 33 and the second component 34 is a curved surface. This allows for uniform heat generation at the interface between the first component 33 and the second component 34 during operation of the first electrode 30, thereby avoiding the problem of concentrated heat generation at the interface due to the different materials of the first component 33 and the second component 34.
  • the contact area between the first component 33 and the second component 34 is large, and the contact area between the copper layer and the aluminum layer is large, resulting in good electrical conductivity between the copper layer and the aluminum layer, thereby improving the reliability of the energy storage device 1000.

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Abstract

本申请公开一种极柱组件、储能装置及用电设备，极柱组件包括第一极柱以及连接于第一极柱的一端的第一法兰。第一极柱包括堆叠且连接的第一构件和第二构件，第二构件连接第一法兰。第一构件的材质和第二构件的材质不同，第一构件与第二构件的连接界面为曲面。第一极柱用于连接储能装置的电极组件，第一法兰用于连接第一母排。

Description

极柱组件、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2024103619110、申请名称为“极柱组件、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，尤其涉及一种极柱组件、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。
电池的极柱的一端连接法兰，另一端用于连接电池内部的电极组件。然而，目前的极柱结构容易出现集中发热问题，影响极柱的可靠性。
发明内容
本申请提供一种极柱组件，极柱组件工作时发热均匀，不容易出现集中发热问题。
极柱组件包括第一极柱以及连接于第一极柱的一端的第一法兰；第一极柱包括堆叠且连接的第一构件和第二构件，第二构件连接第一法兰；第一构件的材质和第二构件的材质不同，第一构件与第二构件的连接界面为曲面；第一极柱用于连接储能装置的电极组件，第一法兰用于连接第一母排。
可以理解的是，在本申请实施例中，第一极柱的第一构件和第二构件的连接界面为波浪形界面，使得第一极柱在工作时，第一构件和第二构件的连接界面能够均匀发热，从而可以避免由于第一构件和第二构件的材质不同而导致的连接界面集中发热的问题。并且，相比于第一构件和第二构件的连接界面为平面的方案，本申请实施例中的第一构件与第二构件的接触面为曲面，第一构件与第二构件的接触面积较大，第一构件与第二构件之间的导电性能较好(也即，铜层和铝层的接触面积较大，铜层和铝层之间的导电性能较好)，从而储能装置的可靠性较好。
本申请还提供一种储能装置，储能装置包括壳体和端盖组件，端盖组件安装于壳体且密封壳体的开口；
端盖组件包括顶盖、下塑胶以及如上述的极柱组件；顶盖具有第一通孔，下塑胶具有第一极柱通孔，下塑胶位于顶盖的一侧，且与顶盖层叠并连接，第一极柱通孔与第一通孔正对设置，第一极柱穿设于第一通孔和第一极柱通孔；第一通孔的形状和第一极柱通孔的形状与第一极柱的第一部分的形状相匹配。
可以理解的是，第一部分用于穿设第一通孔和第一极柱通孔并与顶盖配合连接，相比于极柱为圆柱形的方案，本申请中通过将第一极柱设置为多边形柱，并将第一通孔的形状和第一极柱通孔的形状也设置成与第一极柱对应的形状，使得第一极柱与顶盖配合连接时，第一极柱不容易相对顶盖转动，提高了第一极柱的抗扭强度，有利于防止下塑胶位于第一极柱和顶盖本体之间的部分被切割。
本申请还提供一种用电设备，其包括上述的储能装置，储能装置用于储存电能。
本申请还提供一种极柱组件的第一极柱的制作方法，极柱组件包括第一极柱，第一极柱包括堆叠且连接的第一构件和第二构件，第一构件的材质和第二构件的材质不同，第一构件与第二构件的连接界面为曲面；
制作方法包括：
S100在铜铝复合板上进行下料，以形成第一坯料；
S200在S100之后，对第一坯料进行冲压，以形成第二坯料；其中，第二坯料包括第一构件；
S300在S200之后，对第二坯料进行冲压，以形成第三坯料；其中，第三坯料包括第一构件与第二构件。
上述制作方法工艺简单，制程良率高。通过上述制作方法制作的第一极柱的用铜量少、成本低，且第一极柱的重量小。
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6A为图4所示的第一极柱和第一法兰的结构示意图；
图6B为图6A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7A为图4所示的第二极柱和第二法兰的结构示意图；
图7B为图7A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8为图4所示的端盖组件在M处的局部放大图；
图9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10为图6A所示的第一极柱和第一法兰在一些实施例中的制作步骤示意图；
图11为图6A所示的第一极柱和第一法兰在一些实施例中的制作过程图；
图12为图11所示的第一极柱和第一法兰制程中的一个状态下的示意图；
图13为图11所示的第一极柱和第一法兰制程中的另一个状态下的示意图；
图14为图11所示的第一极柱和第一法兰制程中的另一个状态下的示意图。
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，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，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，23第二极柱通孔，231第二收容槽，231A第二卡持凸起，30第一极柱，301第一部分，3011第一顶面，3012第一侧面，33第一构件，34第二构件，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第二侧面，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，30a第一坯料，30b第二坯料，30c第三坯料，31a第三部分，33a铜层，34a铝层。
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为多芯电池为例进行说明。
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。
本申请实施例中以第一极柱30为负极极柱、第一法兰31为负极法兰为例进行说明。其中，第一极柱30为复合极柱，第一极柱30和第一法兰31共同组成极柱组件。可以理解的是，复合极柱至少包括两种不同的材质。复合极柱可以是由包含至少两种不同的材质的复合板通过冲压工艺成型，也可以通过至少两种不同的材质通过注塑成型等。本申请不对复合极柱的结构和成型工艺做限定。其中，第二极柱40可以为复合极柱，也可以仅包含一种材质。
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，也即第一通孔12和第二通孔13均贯穿顶盖本体11。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。
请结合参阅图5、图6A和图6B，图6A为图4所示的第一极柱30和第一法兰31的结构示意图，图6B为图6A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6B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为六边形柱。例如，第一部分301可以为正六边形柱，第一部分301相对第一极柱30的中心轴线O1-O1呈中心对称结构。第二部分302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，一些示例中，第二部分302可以通过连接片与储能装置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用于与第一母排(Busbar)连接。第一母排可以为负极母排。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。这样，第一极柱30和第一法兰31之间的导电性能较好且不容易产生集中发热问题，并且第一极柱30和第一法兰31的成型工艺较为简单、成本较低。
在一些实施例中，第一极柱30包括堆叠且连接的第一构件33和第二构件34。示例性的，第一构件33和第二构件34沿第一极柱30的厚度方向(Z轴方向)排布。其中，第一构件33用于连接储能装置1000的电极组件。第二构件34背向第一构件33的一侧表面连接第一法兰31。其中，第二构件34与第一法兰31为一体成型的结构件。
示例性的，第一极柱30的第一部分301由部分第一构件33和部分第二构件34共同组成。也即，第一部分301包括部分第一构件33和部分第二构件34。第一极柱30的第二部分302可以由另一部分第一构件33和部分第二构件34共同组成。也即，第二部分302包括另一部分第一构件33和另一部分第二构件34。其中，第一构件33在第二部分302的部分用于连接储能装置1000的电极组件。当然，在其他实施例中，第一部分301由部分第一构件33和全部第二构件34共同组成。也即，第一部分301包括部分第一构件33和全部第二构件34。第一极柱30的第二部分302也可以仅由第一构件33形成，也即第二部分302仅包括另一部分第一构件33。
在本申请实施例中，第一构件33的材质和第二构件34的材质不同。其中，第二构件34的材质与第一法兰31的材质相同。
示例性的，第一构件33的材质为铜。可以理解的是，储能装置1000中用于电连接电极组件和第一极柱30的连接片一般采用铜材。当第一构件33在第二部分302中的部分通过连接片与储能装置1000的电极组件连接时，由于第一构件33的材质与连接片的材质均为铜，使得第一极柱30与连接片之间激光焊接的可靠性较好，第一极柱30不容易从连接片上脱落，从而可以保证第一极柱30与储能装置1000内部的电极组件之间的导电性能，有利于提高储能装置1000的可靠性。
在本申请中，第一构件33的材质与储能装置1000内部用于连接电极组件和第二部分302的连接片的材质相同。因此，当连接片的材质改变(例如采用铜以外的金属材料)时，第一构件33的材质可以随连接片的材质对应改变。
在本申请实施例中，第二构件34的材质和第一法兰31的材质均为铝。可以理解的是，为降低成本，电池的第一母排一般采用铝材。当第一法兰31与第一母排连接时，由于第一法兰31的材质与第一母排均为铝，第一法兰31与第一母排之间激光焊接的可靠性较好，第一法兰31不容易从第一母排上脱落，从而可以保证第一极柱30与第一母排之间的导电性能，有利于提高储能装置1000的可靠性。
在本申请中，第二构件34的材质和第一法兰31的材质与第一母排的材质相同。因此，当第一母排的材质改变(例如采用铝以外的金属材料)时，第二构件34的材质和第一法兰31的材质可以随第一母排的材质对应改变。
可以理解的是，在本申请实施例中，铜层由第二部分302延伸至第一部分301，此时第一极柱30的铜材面积较大，第一极柱30的导电性能较好。并且，由于铜的加热速度小于铝的加热速度，通过增大第一极柱30的铜材的面积，并减少铝材的面积，使得第一极柱30不容易发热，有利于提高储能装置1000的可靠性。
在本实施例中，第一构件33与第二构件34的连接界面为曲面。可以理解的是，本申请通过将第一构件33和第二构件34的连接界面设置为波浪形界面，使得第一极柱30在工作时，第一构件33和第二构件34的连接界面能够均匀发热，从而可以避免由于第一构件33和第二构件34的材质不同而导致的连接界面集中发热的问题。并且，相比于第一构件33和第二构件34的连接界面为平面的方案，本申请实施例中的第一构件33与第二构件34的接触面为曲面，第一构件33与第二构件34的接触面积较大，第一构件33与第二构件34之间的导电性能较好(也即，铜层和铝层的接触面积较大，铜层和铝层之间的导电性能较好)，从而储能装置1000的可靠性较好。
在本实施例中，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还包括依次连接的六个第一侧面3012，六个第一侧面3012均连接第一顶面3011。六个第一侧面3012相对第一极柱30的中心轴线O1-O1呈中心对称分布。
其中，第一顶面3011为第一构件33远离第一法兰31的一侧表面。六个第一侧面3012中的每个第一侧面3012的一部分位于第一构件33，六个第一侧面3012中的每个第一侧面3012的另一部分位于第二构件34。也即，第一构件33包括第一部分301的每个第一侧面3012的一部分，第二构件34包括第一部分301的每个第一侧面3012的另一部分。
在第一极柱30的厚度方向(Z轴方向)上，第一构件33在相邻两个第一侧面3012的连接处的长度，大于第一构件33在每个第一侧面3012的长度。也即，在相邻两个第一侧面3012的连接处的铜材面积大于每个第一侧面3012的铜材面积。可以理解的是，由于铜的加热速度小于铝的加热速度，通过增大相邻两个第一侧面3012的连接处铜的面积，并减少铝的面积，使得在相邻两个第一侧面3012的连接处不容易发热，有利于提高储能装置1000的可靠性。
在本实施例中，六个第一侧面3012中相邻两个第一侧面3012之间均进行倒圆角处理，也即，六个第一侧面3012中相邻两个第一侧面3012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不容易发生铜层破裂而导致出现铝层以及铝粉铜层的情况。示例性的，相邻两个第一侧面3012的连接处进行倒圆角处理，并形成倒角R01，也即，六个第一侧面3012中相邻两个第一侧面3012之间均圆滑过渡。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。
在本实施例中，第一顶面3011与第一侧面3012的连接处进行倒圆角处理。示例性的，第一顶面3011与六个第一侧面3012中的每个第一侧面3012均进行倒圆角处理，也即，第一顶面3011与每个第一侧面3012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和第一侧面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。
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)，第一侧面3012朝向第一极柱30的中心倾斜。示例性的，六个第一侧面3012中的每个第一侧面3012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从第二部分302向第一部分301方向冲压过程中的材料流动阻力，第一部分301不容易发生铜层破裂而导致出现铝层以及铝粉铜层的情况。示例性的，第一侧面3012与第一极柱30的厚度方向(也即Z轴)的夹角在0.05°至5°范围内。例如，第一侧面3012与Z轴的夹角在1°至3°范围内。
请结合参阅图5、图7A和图7B，图7A为图4所示的第二极柱40和第二法兰41的结构示意图，图7B为图7A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7B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。其中，第四部分402可以与储能装置1000的电极组件电连接。
其中，第三部分401为六边形柱。例如，第三部分401可以为正六边形柱，第三部分401相对第二极柱40的中心轴线O2-O2呈中心对称结构。第四部分402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度，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用于连接第二母排。第二母排可以为正极母排。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还包括依次连接的六个第二侧面4012，六个第二侧面4012均连接第二顶面4011。六个第二侧面4012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，六个第二侧面4012中相邻两个第二侧面4012之间均进行倒圆角处理，也即，六个第二侧面4012中相邻两个第二侧面4012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，相邻两个第二侧面4012进行倒圆角处理，并形成倒角R03，也即，六个第二侧面4012中相邻两个第二侧面4012之间均圆滑过渡。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。
在本实施例中，第二顶面4011与第二侧面4012的连接处进行倒圆角处理，也即，第二顶面4011与第二侧面4012之间圆滑过渡。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和第二侧面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。
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)，第二侧面4012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，第二侧面4012与Z轴的夹角在0.05°至5°范围内。例如，第二侧面4012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。
请结合参阅图4和图8，图8为图4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。
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，也即，第一极柱通孔22贯穿下塑胶本体21和第一卡持凸起221A。其中，第一极柱通孔22可以理解为极柱通孔。
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，也即，第二极柱通孔23贯穿下塑胶本体21和第二卡持凸起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，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和图9，图9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。
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插设于第一安装槽121，第一卡持凸起221A与第一安装槽121可以相互卡持实现相互的定位。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。图9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。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位于第一极柱30和顶盖本体11之间的部分被切割。
在本实施例中，下塑胶20的第二卡持凸起231A插设于第二安装槽131，第二卡持凸起231A与第二安装槽131可以相互卡持实现相互的定位。第二极柱40穿设于第二极柱通孔23与第二通孔13。具体的，第三部分401穿设于第二通孔13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设置为六边形(或其他多边形)，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位于第二极柱40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9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。
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9中采用虚线示意性区分了第二主体部621、第二内环部622和第二外环部623。
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。
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。
上文中主要介绍了储能装置1000的各部件(包括顶盖10、下塑胶20、第一极柱30、第二极柱40等)的结构以及储能装置1000的各部件之间的连接方式。其中，第一极柱30和第一法兰31可以通过冲压工艺形成一体成型的结构件，且第一极柱30(也即复合极柱)包括材质不同的第一构件33和第二构件34。下文将结合相关附图对第一极柱30和第一法兰31的成型工艺(也即极柱组件的成型工艺)。
请结合参阅图10和图11，图10为图6A所示的第一极柱30和第一法兰31在一些实施例中的制作步骤示意图，图11为图6A所示的第一极柱30和第一法兰31在一些实施例中的制作过程图。
S100：在铜铝复合板上进行下料，以形成第一坯料30a。
在本申请实施例中，第一坯料30a包括沿坯料的厚度方向排布且连接的铜层33a和铝层34a，并且铜层33a的厚度小于铝层34a的厚度，第一极柱30的用铜量少、成本低，且第一极柱30的重量小。第一坯料30a呈多边形柱。示例性的，第一坯料30a呈正六边形柱。相比第一坯料30a为圆柱形的方案，在本申请中，第一坯料30a为正六边形柱，使得铜铝复合板上的下料位置之间更加靠近，从而铜铝复合板可以具有更多的下料位置，铜铝复合板的材料利用率可以得到提高。
S200：在S100之后，对第一坯料30a进行冲压，以在第一坯料30a上形成第一极柱30的第一构件33(或第一极柱30的第二部分302)。也即，形成第二坯料30b。第一极柱30的第一构件33(或第一极柱30的第二部分302)的制作工艺简单，制程良率高。图11中采用虚线示意性区分出了第二部分302。
在本申请实施例中，第一坯料30a在外力的挤压下，铜层压溃往四周流动，第一坯料30a的厚度减小，从而在S200后形成的第二坯料30b的厚度小于第一坯料30a的厚度，并且，第二坯料30b的铜层的厚度大于或等于第一坯料30a的铜层厚度。这样，第一极柱30的铜层可以由第二部分302延伸至第一部分301，使得第一极柱30的铜层的面积较大，第一极柱30的导电性能较好。并且，由于铜的加热速度小于铝的加热速度，通过增大第一极柱30的铜材的面积，并减少铝材的面积，使得第一极柱30不容易发热，有利于提高储能装置1000的可靠性。
示例性的，第二部分302呈圆柱形。第二部分302的外表面的材质为铜。这样，当第二部分302通过连接片与储能装置1000的电极组件连接时，由于第二部分302的材质与连接片的材质均为铜，第二部分302与连接片之间激光焊接的可靠性较好，第二部分302不容易从连接片上脱落，从而可以保证第一极柱30与储能装置1000内部的电极组件之间的导电性能，有利于提高储能装置1000的可靠性。
S300：在S200之后，对第二坯料30b进行冲压，以在第二坯料30b上形成第一极柱30的第二构件34(或第一极柱30的第一部分301)、以及与第二构件34连接的第三部分31a。也即，形成第三坯料30c。第一极柱30的第二构件34(或第一极柱30的第一部分301)的制作工艺简单，制程良率高。图11中采用虚线示意性区分了第一部分301、第二部分302和第三部分31a。
在申请实施例中，在形成第二构件34之后，再通过施加较大的压力挤压第二坯料30b的铝层，使铝层压溃往四周流动，第二坯料30b的厚度减小并形成第一构件33和第三部分31a。其中，挤压第二坯料30b的压力在30-50吨的范围内，例如，40吨。
示例性的，第一极柱30包括堆叠且连接的第一构件33和第二构件34。示例性的，第一构件33和第二构件34沿第一极柱30的厚度方向(Z轴方向)排布。第一构件33的材质和第二构件34的材质不同且第一构件33和第二构件34的连接界面为曲面，使得第一极柱30在工作时，第一构件33和第二构件34的连接界面能够均匀发热，从而可以避免由于第一构件33和第二构件34的材质不同而导致的连接界面集中发热的问题。并且，第一构件33与第二构件34的接触面积较大，铜层和铝层的接触面积较大，铜层和铝层之间的导电性能较好，从而储能装置1000的可靠性较好。
S400：在S300之后，对第三坯料30c进行切削，以形成第一极柱30和第一法兰31。图11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。
示例性的，在第二坯料30b上形成第一部分301和与第一部分301连接的第三部分31a之后，对第三部分31a进行切削，以形成圆柱形的外形，也即形成第一法兰31。可以理解的是，第一极柱30和第一法兰31通过至少两次冲压工艺成型。示例性的，第一极柱30和第一法兰31通过两次冲压工艺成型。第一法兰31的成型工艺在第一极柱30的成型工艺之后。这样，第一法兰31的成型工艺较为简单，且第一极柱30和第一法兰31的成型良率较高。
其中，第一法兰31的材质与第二构件34的材质相同，第一法兰31的材质和第二构件34的材质均为铝。这样，当第一法兰31与第一母排连接时，由于第一法兰31的材质与第一母排均为铝，第一法兰31与第一母排之间激光焊接的可靠性较好，第一法兰31不容易从第一母排上脱落，从而可以保证第一法兰31与第一母排之间的导电性能，有利于提高储能装置1000的可靠性。
在一些实施例中，在S400之后，还可以对第一极柱30和第一法兰31进行清洗，以清除第一极柱30和第一法兰31表面的灰尘、杂质和金属屑，以避免灰尘、杂质和金属屑等影响第一极柱30和第一法兰31的导电性能，从而影响储能装置1000的可靠性。
可以理解的是，本申请中提供的用于制作第一极柱30和第一法兰31的方法还可以适用于一些类似第一极柱30和第一法兰31的结构，本申请对此不作限定。
请结合参阅图11、图12和图13，图12为图11所示的第一极柱30和第一法兰31制程中的一个状态下的示意图，图13为图11所示的第一极柱30和第一法兰31制程中的另一个状态下的示意图。示例性的，图12示意了第一坯料30a在冷镦-合模前的状态，图13示意了第一坯料30a在冷镦-合模后形成第二坯料30b的状态。
在本申请实施例中，第一极柱30和第一法兰31可以在冲压设备上形成。示例性的，冲压设备包括凸模、凹模、脱落镶件和弹簧。其中，凹模具有预设形状的凹槽，通过对坯料施加压力，使得坯料材料发生流动以填充凹模的凹槽，从而坯料可以在凸模和凹模的相互配合下被冲压形成预设的形状。其中，脱落镶件和弹簧可以使得冲压后的坯料从凹模脱离。
在本申请实施例中，在外力的作用下，第一坯料30a在凸模和凹模的配合下，铜层33a压溃往四周流动，形成第二坯料30b。示例性的，第二坯料30b的厚度小于第一坯料30a的厚度。第一坯料30a的铜层的最大厚度小于或等于第二坯料30b的铜层的最大厚度。也即，第二坯料30b的铜层覆盖面积大于或等于第一坯料30a的铜层覆盖面积。这样，第一极柱30的铜层可以由第二部分302延伸至第一部分301，使得第一极柱30的铜层的面积较大，第一极柱30的导电性能较好。并且，由于铜的加热速度小于铝的加热速度，通过增大第一极柱30的铜的面积，并减少铝的面积，使得第一极柱30不容易发热，有利于提高储能装置1000的可靠性。
请结合参阅图11、图13和图14，图14为图11所示的第一极柱30和第一法兰31制程中的另一个状态下的示意图。示例性的，图14示意了第二坯料30b在冷镦-合模后形成第三坯料30c的状态。
示例性的，在形成第二坯料30b后，施加较大的压力挤压第二坯料30b的铝层，第二坯料30b在凸膜和凹膜的配合下，铝层压溃往四周流动，形成第三坯料30c。其中，挤压第二坯料30b的压力在30-50吨的范围内，例如，40吨。示例性的，第三坯料30c的厚度小于第二坯料30b的厚度。
示例性的，第三坯料30c包括堆叠且连接的第一构件33和第二构件34。第一构件33的材质和第二构件34的材质不同且第一构件33和第二构件34的连接界面为曲面，使得第一极柱30在工作时，第一构件33和第二构件34的连接界面能够均匀发热，从而可以避免由于第一构件33和第二构件34的材质不同而导致的连接界面集中发热的问题。并且，第一构件33与第二构件34的接触面积较大，铜层和铝层的接触面积较大，铜层和铝层之间的导电性能较好，从而储能装置1000的可靠性较好。
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 (16)

  1. 一种极柱组件，其特征在于，包括第一极柱以及连接于所述第一极柱的一端的第一法兰；
    所述第一极柱包括堆叠且连接的第一构件和第二构件，所述第二构件连接所述第一法兰；所述第一构件的材质和所述第二构件的材质不同，所述第一构件与所述第二构件的连接界面为曲面；
    所述第一极柱用于连接储能装置的电极组件，所述第一法兰用于连接第一母排。
  2. 根据权利要求1所述的极柱组件，其特征在于，所述第二构件的材质与所述第一法兰的材质相同；所述第一构件的材质包括铜，所述第二构件的材质包括铝。
  3. 根据权利要求1或2所述的极柱组件，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；
    所述第一部分包括部分所述第一构件和至少部分所述第二构件，所述第二部分至少包括另一部分所述第一构件。
  4. 根据权利要求3所述的极柱组件，其特征在于，所述第一部分为多边形柱。
  5. 根据权利要求4所述的极柱组件，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六个第一侧面，六个所述第一侧面均连接所述第一顶面，六个所述第一侧面相对所述第一极柱的中心轴线呈中心对称分布；
    所述第一顶面为所述第一构件远离所述第一法兰的一侧表面，每个所述第一侧面的一部分位于所述第一构件，每个所述第一侧面的另一部分位于所述第二构件。
  6. 根据权利要求5所述的极柱组件，其特征在于，在所述第一极柱的厚度方向上，所述第一构件在相邻两个所述第一侧面的连接处的长度大于所述第一构件在所述第一侧面的长度。
  7. 根据权利要求5或6所述的极柱组件，其特征在于，相邻两个所述第一侧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。
  8. 根据权利要求5或6所述的极柱组件，其特征在于，所述第一顶面和所述第一侧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。
  9. 根据权利要求5或6所述的极柱组件，其特征在于，沿所述第一部分向第二部分的方向，所述第一侧面朝向所述第一极柱的中心倾斜。
  10. 根据权利要求9所述的极柱组件，其特征在于，所述第一侧面与所述第一极柱的厚度方向的夹角在0.05°至5°范围内。
  11. 根据权利要求1或2所述的极柱组件，其特征在于，所述第一极柱和所述第一法兰为一体成型的结构件。
  12. 一种储能装置，其特征在于，包括壳体和端盖组件，所述端盖组件安装于所述壳体且密封所述壳体的开口；
    所述端盖组件包括顶盖、下塑胶以及如权利要求1至11中任一项所述的极柱组件；
    所述顶盖具有第一通孔，所述下塑胶具有第一极柱通孔，所述下塑胶位于所述顶盖的一侧，且与所述顶盖层叠并连接，所述第一极柱通孔与所述第一通孔正对设置，所述第一极柱穿设于所述第一通孔和所述第一极柱通孔；
    所述第一通孔的形状和所述第一极柱通孔的形状与所述第一极柱的第一部分的形状相匹配。
  13. 根据权利要求12所述的储能装置，其特征在于，所述顶盖包括顶盖本体，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，所述第一通孔贯穿所述正面和所述背面；
    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。
  14. 根据权利要求13所述的储能装置，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。
  15. 一种用电设备，其特征在于，包括如权利要求12至14中任一项所述的储能装置，所述储能装置用于储存电能。
  16. 一种极柱组件的第一极柱的制作方法，所述极柱组件包括第一极柱，其特征在于，所述第一极柱包括堆叠且连接的第一构件和第二构件，所述第一构件的材质和所述第二构件的材质不同，所述第一构件与所述第二构件的连接界面为曲面；
    所述制作方法包括：
    S100在铜铝复合板上进行下料，以形成第一坯料；
    S200在S100之后，对所述第一坯料进行冲压，以形成第二坯料；其中，所述第二坯料包括所述第一构件；
    S300在S200之后，对所述第二坯料进行冲压，以形成第三坯料；其中，所述第三坯料包括所述第一构件与所述第二构件。
PCT/CN2024/135634 2024-03-27 2024-11-29 极柱组件、储能装置及用电设备 Pending WO2025200528A1 (zh)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN211125704U (zh) * 2019-12-27 2020-07-28 中航锂电技术研究院有限公司 一种电池盖板及电池
CN116526084A (zh) * 2023-07-05 2023-08-01 深圳海辰储能控制技术有限公司 顶盖组件、储能装置及用电设备
CN116780067A (zh) * 2023-08-16 2023-09-19 深圳海辰储能控制技术有限公司 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
CN118040249A (zh) * 2024-03-27 2024-05-14 厦门海辰储能科技股份有限公司 极柱组件、储能装置及用电设备

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6581440B2 (ja) * 2014-10-24 2019-09-25 日立金属株式会社 電池用端子、電池用端子の製造方法および電池
JP7124842B2 (ja) * 2020-03-25 2022-08-24 日立金属株式会社 端子のシール構造
CN116435721B (zh) * 2023-06-12 2024-05-24 深圳海辰储能科技有限公司 极柱组件、端盖组件、储能装置及用电设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN211125704U (zh) * 2019-12-27 2020-07-28 中航锂电技术研究院有限公司 一种电池盖板及电池
CN116526084A (zh) * 2023-07-05 2023-08-01 深圳海辰储能控制技术有限公司 顶盖组件、储能装置及用电设备
CN116780067A (zh) * 2023-08-16 2023-09-19 深圳海辰储能控制技术有限公司 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
CN118040249A (zh) * 2024-03-27 2024-05-14 厦门海辰储能科技股份有限公司 极柱组件、储能装置及用电设备

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