WO2023221076A1 - 缩颈翻边滚轮、缩颈翻边机构和电池制造设备 - Google Patents

缩颈翻边滚轮、缩颈翻边机构和电池制造设备 Download PDF

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Publication number
WO2023221076A1
WO2023221076A1 PCT/CN2022/094041 CN2022094041W WO2023221076A1 WO 2023221076 A1 WO2023221076 A1 WO 2023221076A1 CN 2022094041 W CN2022094041 W CN 2022094041W WO 2023221076 A1 WO2023221076 A1 WO 2023221076A1
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WO
WIPO (PCT)
Prior art keywords
necking
flanging
roller
housing
roller body
Prior art date
Application number
PCT/CN2022/094041
Other languages
English (en)
French (fr)
Inventor
潘有成
姜亮
孟浩
Original Assignee
宁德时代新能源科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to CN202280048724.6A priority Critical patent/CN117677449A/zh
Priority to PCT/CN2022/094041 priority patent/WO2023221076A1/zh
Publication of WO2023221076A1 publication Critical patent/WO2023221076A1/zh

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Classifications

    • 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
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/02—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge
    • B21D19/04—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers
    • 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
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/02—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge
    • B21D19/04—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers
    • B21D19/06—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers working inwardly
    • 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
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
    • 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
    • B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
    • 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
    • H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic

Definitions

  • the present application relates to the technical field of battery production, specifically to a necking and flanging roller, a necking and flanging mechanism and battery manufacturing equipment.
  • Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy conservation and environmental protection.
  • battery technology is an important factor related to their development.
  • This application provides a necking and flanging roller, a necking and flanging mechanism and battery manufacturing equipment, which can improve the quality of batteries.
  • the present application provides a necking and flanging roller, which is used to form a necking portion and a flanging portion on a shell, including: a roller body; and a limiting portion, which is connected to the roller body along the axial direction of the roller body.
  • the roller bodies are arranged oppositely; wherein, a gap is formed between the roller body and the limiting part, and the gap allows the free end of the flange part to be inserted and limits the bending deformation of the free end.
  • battery cells are usually sealed using a rolling sealing process.
  • a shrinking portion and a flanging portion need to be formed on the casing to achieve rolling sealing.
  • the necking and flanging roller is used to form the necking part and the flanging part on the shell.
  • the roller body feeds the shell so that the shell is radially deformed to form the necking part and the end of the shell is bent outward to form the flanging part. edge.
  • the free end of the flange part is inserted into the gap between the roller body and the limiting part, and is constrained in the axial direction of the roller body (the axial direction of the housing) (for example, turning The free end of the edge is perpendicular to the axial direction of the shell under the constraints of the limiting part), to avoid the free end of the flange being lifted due to lack of restraint, and to ensure the accuracy and accuracy of the shell flanging. Quality, so that the sealing quality of the casing and end caps is high, which in turn makes the battery cells and batteries have high quality.
  • the limiting portion is coaxially arranged with the roller body, and the maximum diameter of the limiting portion is smaller than the minimum diameter of the roller body.
  • the limiter part and the roller body are coaxially arranged, and the maximum diameter of the limiter part is smaller than the minimum diameter of the roller body, which can form an avoidance area for the flange part to be inserted into the gap and avoid the limiter part from interfering with the gap.
  • the flange portion causes interference.
  • the outer circumferential surface of the limiting portion includes a guide bevel
  • the guide bevel is arranged obliquely relative to the central axis of the roller body, and the guide bevel is used to guide the free end into the gap.
  • the technical solution of the embodiment of the present application provides a guide bevel to guide the free end of the flange to gradually deform along the guide bevel to enter the gap, thereby reducing the risk of breakage of the flange due to stress concentration, thereby ensuring the quality of the flange.
  • the necking and flanging roller further includes: a connecting portion disposed between the roller body and the limiting portion, and connecting the roller body and the limiting portion; wherein, the The gap is a first groove provided around the connecting portion.
  • the roller body and the limiting part are connected to each other through the connecting part, so that the necking and flanging roller has a compact structure.
  • the gap is the first groove provided around the connecting part, during the necking and flanging process, the necking and flanging roller revolves around the housing, and the free end of the flanging part can be rotated in the circumferential direction of the housing.
  • the constraint of the limiting part ensures the circumferential flanging quality and efficiency of the casing, thereby ensuring the quality of the battery.
  • the connecting portion is coaxially disposed with the roller body.
  • the connecting part and the roller body are coaxially arranged, so that the necking and flanging roller has a neat appearance and evenly receives force when squeezing the housing.
  • the limiting part, the connecting part and the roller body are integrally formed.
  • the necking and flanging roller has an integrated structure, which can improve the manufacturing efficiency and structural strength of the necking and flanging roller compared to the split structure.
  • the present application also provides a necking and flanging mechanism, including: a support member at least partially disposed inside the housing to support the housing; a necking and flanging mechanism according to any embodiment of the first aspect.
  • a neck flanging roller is provided on the outer periphery of the support member, and the necking flanging roller is used to cooperate with the support member to form a constriction portion and a flange portion on the housing.
  • the support member cooperates with the necked flanging roller, which can improve the quality of the flanging of the case and ensure the quality of the rolling seal, thereby making the battery cells and batteries have higher quality.
  • the support member includes a first support part and a second support part, the first support part and the second support part are arranged along the axial direction of the housing and are coaxially arranged, and the The outer diameter of the first supporting part is smaller than the outer diameter of the second supporting part; the first supporting part is used to extend into the housing from the opening of the housing to cooperate with the necking flanging roller in the The constriction portion is formed on the housing; the second support portion is used to resist the inner wall of the housing to cooperate with the constriction and flanging roller to form the flange portion on the housing.
  • the first support part is used to limit the feeding distance of the roller body, and cooperates with the roller body to form a constriction part on the shell.
  • the second support part is used to limit the flanging height of the housing, and cooperates with the limiting part to form a flanging part on the housing and ensure flanging quality.
  • the projection of the roller body on the support member is located on the outer peripheral surface of the first support part, and the limiting portion is on the support member.
  • the projection is located on the outer peripheral surface of the second support part.
  • the roller body pushes against the outer peripheral surface of the first support member to feed the shell to form a necked portion on the shell.
  • the limiting part pushes against the second support part as the roller body advances, so that the free end of the flange part can be inserted into the gap, thereby constraining the free end of the flange part.
  • the number of the necking and flanging rollers is multiple, and the plurality of necking and flanging rollers are arranged at intervals around the outer periphery of the support member.
  • the technical solution of the embodiment of the present application is to provide a plurality of necking and flanging rollers, and the plurality of necking and flanging rollers are arranged at intervals around the periphery of the support member, so that the force on the shell can be uniform, and the necking and flanging of the shell can be improved.
  • the stability during the process reduces the risk of shell damage and improves the dimensional accuracy of the flanged part.
  • multiple necking and flanging rollers work at the same time, which can improve the efficiency of necking and flanging the shell, thereby improving the production efficiency of the battery.
  • the necking and flanging mechanism further includes: a first driving member for driving the necking and flanging roller to move in the radial direction of the support member.
  • the necking and flanging roller can be fed to the housing along the radial direction of the support member, so as to form the necking portion and the flanging portion on the housing.
  • the necking and flanging mechanism further includes: a second driving member for driving the necking and flanging roller to rotate around the support member.
  • the technical solution of the embodiment of the present application enables the necking and flanging roller to revolve around the housing by arranging a second driving member, thereby ensuring that the housing is uniformly stressed, improving the stability of the housing during the necking and flanging process, and improving Dimensional accuracy of flanging parts.
  • the necking and flanging mechanism further includes a tray, which is arranged opposite to the support member along the axial direction of the support member and is used to support the housing.
  • the technical solution of the embodiment of the present application provides a tray to support the shell, so that the shell remains stationary under the action of the support and the tray, thereby improving the stability of the shell during the necking and flanging process and ensuring the quality of the flanging.
  • the necking and flanging mechanism further includes: a rolling groove roller, which is provided on the outer periphery of the support member and is used to roll-form a second groove on the housing.
  • the rolling groove roller arranged along the circumferential direction of the support member.
  • the technical solution of the embodiment of the present application is that before the shrinkage portion and the flange portion are formed on the shell, the groove roller is fed to the shell to roll-form the second groove on the shell, and then the second groove is formed on the shell through the roller body. Two-groove feeding can reduce the difficulty of forming the shrinkage part.
  • the second groove is first rolled on the housing (along the radial direction of the support, the projection of the second groove is not on the electrode assembly) ), and then roll the second groove through the roller body to form a constriction, which can reduce the deformation area of the housing and prevent the electrode assembly inside the housing from being squeezed due to the excessive deformation area of the housing, thus ensuring the safety of the electrode assembly. sex.
  • the roller body has a first surface facing away from the limiting portion, and a plane on which the first surface is located is located between two opposite surfaces of the grooved roller along its axial direction.
  • the deformation position of the housing caused by the feeding of the roller body starts from the second in the groove to avoid interference between the constricted portion and the electrode assembly, ensuring the safety of the electrode assembly.
  • the thickness of the roller body is greater than the thickness of the grooved roller.
  • the thickness of the roller body is greater than the thickness of the grooved roller, so that the shell can effectively form a constriction portion, thereby ensuring the flanging quality.
  • the present application also provides battery manufacturing equipment, including the necking and flanging mechanism described in any one of the above embodiments, and the necking and flanging mechanism is used to form a necking portion on the battery casing. and flanging part.
  • Figure 1 is a schematic diagram of a necking and flanging roller and a housing in some embodiments of the present application;
  • Figure 2 is a schematic diagram of a shell formed with a constriction portion and a flange portion in some embodiments of the present application;
  • Figure 3 is a partial schematic diagram of the necking and flanging roller and the flanging part in some embodiments of the present application;
  • Figure 4 is a schematic diagram of a necking and flanging roller in some embodiments of the present application.
  • Figure 5 is a perspective view of the necking and flanging mechanism in some embodiments of the present application.
  • Figure 6 is a top view of the necking and flanging mechanism in some embodiments of the present application.
  • Figure 7 is a cross-sectional view along the A-A direction in Figure 6;
  • Figure 8 is an enlarged view of C in Figure 7;
  • Figure 9 is a schematic diagram of a support member and a necked flanging roller in some embodiments of the present application.
  • Figure 10 is an enlarged view of D in Figure 9;
  • Figure 11 is a cross-sectional view along the B-B direction in Figure 6;
  • Figure 12 is a schematic diagram of the housing after being rolled by a grooved roller in some embodiments of the present application.
  • Figure 13 is an enlarged view of E in Figure 12;
  • Figure 14 is a schematic diagram of the necking and flanging roller and the second groove in some embodiments of the present application.
  • Figure 15 is a schematic diagram of the necking and flanging roller squeezing the housing in some embodiments of the present application.
  • Figure 16 is a schematic diagram of the shell being formed with a constriction portion and a flange portion in some embodiments of the present application.
  • Icon 10-necked flanging roller; 10a-clearance; 10b-first groove; 10c-avoidance area; 11-roller body; 110-first surface; 12-limiting part; 120-guide slope; 121- Flat surface; 13-connection part; 20-shell; 21-reduced part; 22-flange part; 23-second groove; 30-support member; 31-first support part; 32-second support part ; 33-Pallet; 34-Grooved roller.
  • an embodiment means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application.
  • the appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.
  • the term “plurality” refers to two or more (including two).
  • the battery cells may include lithium ion secondary batteries, lithium ion primary batteries, lithium-sulfur batteries, sodium lithium ion batteries, sodium ion batteries or magnesium ion batteries, etc., which are not limited in the embodiments of this application.
  • the battery cell includes a casing, an end cover, an electrode assembly and an electrolyte.
  • the electrode assembly and electrolyte are contained in the casing, and the end cover is used to close the opening of the casing.
  • welding and crimping There are two main ways to connect the end cover and the shell: welding and crimping. Among them, crimp sealing, as an efficient and fast sealing method, is increasingly used in the production and manufacturing of cylindrical battery cells.
  • the electrode assembly consists of a positive electrode sheet, a negative electrode sheet and a separator. Battery cells mainly rely on the movement of metal ions between the positive and negative electrodes to work.
  • the positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer.
  • the positive electrode active material layer is coated on the surface of the positive electrode current collector.
  • the positive electrode current collector that is not coated with the positive electrode active material layer protrudes from the positive electrode current collector that is coated with the positive electrode active material layer.
  • the positive electrode current collector without coating the positive electrode active material layer is used as the positive electrode tab.
  • the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganate, etc.
  • the negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer.
  • the negative electrode active material layer is coated on the surface of the negative electrode current collector.
  • the negative electrode current collector that is not coated with the negative electrode active material layer protrudes from the negative electrode current collector that is coated with the negative electrode active material layer.
  • the negative electrode current collector that is not coated with the negative electrode active material layer is used as the negative electrode tab.
  • the material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon.
  • the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together.
  • the material of the isolation film can be PP (polypropylene, polypropylene) or PE (polyethylene, polyethylene), etc.
  • the battery mentioned in the embodiments of this application refers to a single physical module including one or more battery cells to provide higher voltage and capacity.
  • the battery mentioned in this application may include a battery module or a battery pack.
  • the inventors in order to prevent the free end of the flanging part from lifting, ensure the flanging accuracy, and improve the quality of the battery, the inventors, after in-depth research, designed a limiting part on the necked flanging roller to limit the freedom of the flanging part.
  • the end of the flange is bent and deformed, thus preventing the free end of the flange from lifting.
  • the necking and flanging roller is used to form the necking and flanging parts on the shell.
  • the shell is stationary, and the necking and flanging roller revolves around the shell and feeds the shell along the radial direction of the shell, rolling and forming the necking portion on the shell, and at the same time, the open end of the shell Bend outward to form a flange.
  • the free end of the flanging part is restrained by the limiting part to prevent the free end from lifting, ensuring the accuracy and quality of the shell flanging, and enabling the end cover to be stably attached It is suitable for the flanging part to ensure the quality of subsequent rolling and sealing, thereby making the battery cells have higher quality.
  • the necking and flanging rollers disclosed in the embodiments of the present application include, but are not limited to, forming the necking and flanging portions on the casings of cylindrical battery cells, cans, or other various containers.
  • the necking and flanging roller is a part of the necking and flanging mechanism.
  • the necking and flanging mechanism refers to the equipment used to process the shell and form the necking part and the flanging part on the shell to achieve crimping.
  • the necking and flanging mechanism also includes a first driving member and a second driving member.
  • the first driving member is used to drive the necking and flanging roller to feed toward the housing
  • the second driving member is used to drive the necking and flanging roller to rotate around the housing.
  • the housing rotates to form a constricted portion and a flanged portion on the housing.
  • Figure 1 is a schematic diagram of the necking and flanging roller 10 and the housing 20 in some embodiments of the present application.
  • Figure 2 is a schematic diagram of the necked flanging roller 10 and the housing 20 in some embodiments of the present application.
  • Figure 3 is a partial schematic diagram of the necking and flanging roller 10 and the flanging portion 22 in some embodiments of the present application.
  • Figure 4 is a partial schematic diagram of the necking and flanging roller 10 and the flanging portion 22 in some embodiments of the present application. Schematic diagram of flanging roller 10.
  • the necking and flanging roller 10 is used to form the necking part 21 and the flanging part 22 on the housing 20, and includes a roller body 11 and a limiting part 12.
  • the limiting portion 12 is arranged opposite to the roller body 11 along the axial direction of the roller body 11 .
  • a gap 10a is formed between the roller body 11 and the limiting portion 12. The gap 10a allows the free end of the flange portion 22 to be inserted and limits the bending deformation of the free end.
  • the necking portion 21 is a portion of the housing 20 that is extruded and deformed by the necking and flanging roller 10 to shrink in the radial direction. While the constricted portion 21 is formed, the open end of the housing 20 is bent outward to form a flange portion 22 .
  • the flange portion 22 is used to be rolled together with the edge portion of the end cap (not shown) to achieve rolling sealing.
  • the free end of the flange portion 22 is the end of the flange portion 22 away from the constricted portion 21 .
  • the roller body 11 is the main part of the necking and flanging roller 10 .
  • the necking and flanging roller 10 feeds in the radial direction of the housing 20, the outer peripheral surface of the roller body 11 contacts the housing 20, squeezing the housing 20, causing the housing 20 to radially deform to form the necking portion. twenty one.
  • the limiting portion 12 is a portion of the necking and flanging roller 10 that limits the free end of the flanging portion 22 from rising.
  • the gap 10a is a part of the necking and flanging roller 10 where the free end of the flange portion 22 is inserted. After the free end of the flange portion 22 is inserted into the gap 10a, it is constrained by the limiting portion 12 to prevent the flange portion 22 from rising. .
  • the roller body 11 can press the housing 20 when the , the free end of the flange portion 22 can be inserted into the gap 10a
  • the limiting portion 12 is coaxially arranged with the roller body 11 , and the maximum diameter of the limiting portion 12 is smaller than the minimum diameter of the roller body 11 .
  • Both the limiting part 12 and the roller body 11 are rotary structures, and their central axes coincide with each other.
  • the necking and flanging roller 10 revolves around the housing 20 and feeds in the radial direction of the housing 20, so that the necking portion 21 and the flanging portion 22 can be formed on the housing 20 efficiently.
  • the maximum diameter of the limiting part 12 is smaller than the minimum diameter of the roller body 11, which can mean that along the radial direction of the necked and flanged roller 10, the maximum size of the limiting part 12 is smaller than the minimum size of the roller body 11, so that there is a gap between the two.
  • the escape area 10c allows the free end of the flange portion 22 to be inserted into the gap 10a without interference from the limiting portion 12.
  • the limiting part 12 and the roller body 11 are coaxially arranged, and the maximum diameter of the limiting part 12 is smaller than the minimum diameter of the roller body 11.
  • an avoidance area 10c can be formed for the flange part 22 to be inserted into the gap 10a, thereby avoiding position limiting.
  • the part 12 interferes with the flange part 22.
  • the limiting part 12 and the roller body 11 can move synchronously. By squeezing the housing 20, the constriction part 21 and the flange can be efficiently formed on the housing 20. Department 22.
  • the outer circumferential surface of the limiting part 12 includes a guide slope 120 .
  • the guide slope 120 is inclined relative to the central axis of the roller body 11 .
  • the guide slope 120 is used to guide the free end to enter. Gap 10a.
  • the guide slope 120 can be a part of the outer circumferential surface of the limiting portion 12, which is inclined relative to the central axis of the roller body 11 to guide the flange portion 22 when the housing 20 is deformed due to the extrusion of the necking flanging roller 10.
  • the free end gradually deforms and bends to enter the gap 10a.
  • the surface of the limiting portion 12 facing the roller body 11 is a flat surface 121 , and the plane where the flat surface 121 is located is perpendicular to the central axis of the roller body 11 (that is, perpendicular to the axis of the housing 20 ).
  • the free end of the flange portion 22 will first gradually deform along the guide slope 120 , and finally the free end of the flange portion 22 is constrained by the flat surface 121 to be perpendicular to the roller.
  • the free end of the guide flange portion 22 is gradually deformed along the guide slope 120 to enter the gap 10a.
  • the cost can be reduced.
  • the flanging portion 22 is at risk of breakage due to stress concentration, thereby ensuring the quality of the flanging.
  • the necking and flanging roller 10 also includes a connecting portion 13.
  • the connecting portion 13 is disposed between the roller body 11 and the limiting portion 12, and connects the roller body 11 and the limiting portion 12. ;
  • the gap 10a is the first groove 10b provided around the connecting portion 13.
  • the connecting portion 13 is located between the roller body 11 and the limiting portion 12 , and connects the roller body 11 and the limiting portion 12 .
  • the necking and flanging roller 10 has an integral structure.
  • the roller body 11 and the limiting part 12 are connected to each other through the connecting part 13, so that the necking and flanging roller 10 has a compact structure and a low space occupation rate.
  • the gap 10a is the first groove 10b provided around the connecting part 13, during the necking and flanging process, the necking and flanging roller 10 revolves around the housing 20, and flanges in the circumferential direction of the housing 20. Any position of the free end of the portion 22 can be restrained by the limiting portion 12 to ensure the flanging quality and efficiency of the housing 20 so that the battery cells have higher quality.
  • the necking and flanging roller 10 may have a split structure.
  • the roller body 11 and the limiting part 12 are two independent components.
  • the limiting part 12 and the roller body 11 are arranged along the axial direction of the roller body 11 . They are arranged at relative intervals.
  • the connecting part 13 may not be disposed between the roller body 11 and the limiting part 12.
  • the connecting part 13 may be a "U"-shaped bracket, one end of which is disposed on the limiting part 12 away from the roller.
  • the other end of the surface of the main body 11 is located on the surface of the roller body 11 away from the limiting portion 12 .
  • the connecting portion 13 is coaxially disposed with the roller body 11 .
  • Both the connecting part 13 and the roller body 11 are rotary structures, and their central axes coincide with each other.
  • the connecting part 13 and the roller body 11 are coaxially arranged, so that the necking and flanging roller 10 has a neat appearance and receives uniform force when squeezing the housing 20 .
  • the maximum diameter of the connecting part 13 is smaller than the minimum diameter of the limiting part 12 , that is, along the radial direction of the necking and flanging roller 10 , the minimum size of the limiting part 12 is larger than the maximum size of the connecting part 13 to achieve
  • the limiting portion 12 restrains the free end of the flange portion 22 to prevent the free end of the flange portion 22 from rising.
  • the connecting part 13 is coaxially arranged with the roller body 11 and the maximum diameter of the connecting part 13 is smaller than the minimum diameter of the limiting part 12, so it can be ensured that the limiting part 12 effectively restrains the free end of the flanging part 22 to avoid flanging.
  • the free end of the part 22 is tilted to ensure the quality of the winding seal and thus the quality of the battery cells.
  • the limiting part 12, the connecting part 13 and the roller body 11 are integrally formed.
  • the necking and flanging roller 10 can be integrally formed through casting, milling, three-dimensional printing and other technologies.
  • the necking and flanging roller 10 is an integrally formed structure. Compared with the split structure, the manufacturing efficiency and structural strength of the necking and flanging roller 10 can be improved.
  • Figure 5 is a perspective view of the necking and flanging mechanism in some embodiments of the present application.
  • Figure 6 is a top view of the necking and flanging mechanism in some embodiments of the present application.
  • Figure 7 is a cross-sectional view along the A-A direction in Figure 6 .
  • This application also provides a necking and flanging mechanism, which includes a support member 30 and a necking and flanging roller 10 .
  • the support member 30 is at least partially disposed inside the housing 20 to support the housing 20 .
  • the necking and flanging roller 10 is disposed on the outer periphery of the support member 30 .
  • the necking and flanging roller 10 is used to cooperate with the support member 30 to form the necking portion 21 and the flanging portion 22 on the housing 20 .
  • the housing 20 has an opening, and at least part of the support member 30 extends into the interior of the housing 20 through the opening to support the housing 20 and prevent the housing 20 from being displaced.
  • the necking and flanging roller 10 can be fed along the radial direction of the support member 30 to squeeze the wall surface of the housing 20 to deform and push against the wall surface of the housing 20 .
  • a constriction portion 21 and a flange portion 22 are formed on the housing 20 .
  • the support member 30 cooperates with the necking and flanging roller 10 to improve the flanging quality of the housing 20 and ensure the quality of subsequent rolling sealing, thereby making the battery cells have higher quality.
  • Figure 8 is an enlarged view of position C in Figure 7.
  • the support member 30 includes a first support part 31 and a second support part 32.
  • the first support part 31 and the second support part 32 are arranged and coaxially arranged along the axial direction of the housing 20.
  • the outer diameter of the first support part 31 is smaller than the outer diameter of the first support part 31.
  • the outer diameter of the second supporting part 32; the first supporting part 31 is used to extend into the housing 20 from the opening of the housing 20 to cooperate with the necking and flanging roller 10 to form the necking part 21 on the housing 20; the second supporting part 32 is used to push against the inner wall of the housing 20 to cooperate with the necking and flanging roller 10 to form the flange portion 22 on the housing 20 .
  • the first support part 31 and the second support part 32 are both rotary structures, and they are coaxially arranged and arranged along the circumferential direction of the housing 20 .
  • the outer diameter of the first support part 31 is smaller than the outer diameter of the second support part 32 .
  • the first support part 31 and the second support part 32 extend into the housing 20.
  • the distance between the first support part 31 and the inside of the housing 20 is the feeding distance of the necking and flanging roller 10. When necking and flanging When the roller 10 presses the wall surface of the housing 20 , the wall surface of the housing 20 contacts the first support part 31 .
  • the second supporting part 32 abuts against the inner wall of the housing 20 , so that when the necking and flanging roller 10 presses the wall surface of the housing 20 and deforms the housing 20 , the inner wall of the housing 20 can move along the second supporting part 32
  • the recessed area between the first support portion 31 and the first support portion 31 is deformed and bent to form a flange portion 22 on the housing 20 .
  • the outer diameter of the first support part 31 is smaller than that of the second support part 32 , and is used to limit the feeding distance of the roller body 11 , and a constriction part 21 is formed on the housing 20 in cooperation with the roller body 11 .
  • the outer diameter of the second supporting part 32 is larger than that of the first supporting part 31.
  • a smooth transition is made between the first support part 31 and the second support part 32 .
  • Figure 9 is a schematic diagram of the support member 30 and the necking and flanging roller 10 in some embodiments of the present application
  • Figure 10 is an enlarged view of D in Figure 9.
  • the projection of the roller body 11 on the support member 30 is located on the outer peripheral surface of the first support part 31
  • the projection of the limiting part 12 on the support member 30 is located on the outer peripheral surface of the second support part 32 .
  • the projection of the roller body 11 on the support member 30 is located on the outer peripheral surface of the first support part 31" means that when the necking and flanging roller 10 is fed in the radial direction of the support member 30, the roller body 11 will push the wall surface of the housing 20 It is extruded to the outer peripheral surface of the first support part 31 to form the constricted part 21 .
  • “The projection of the limiting part 12 on the support member 30 is located on the outer peripheral surface of the second support part 32” means that when the necking and flanging roller 10 feeds along the radial direction of the support member 30, the limiting part 12 and the second support The flanging portion 32 cooperates to constrain the deformation position of the free end of the flanging portion 22 to ensure flanging quality.
  • the surface of the limiting portion 12 facing the roller body 11 and the surface of the second supporting portion 32 facing the first supporting portion 31 are on the same plane, thereby effectively ensuring flanging quality.
  • the roller body 11 pushes against the outer peripheral surface of the first support member 30 to squeeze the housing 20 to form the necking portion 21 on the housing 20 .
  • the limiting portion 12 pushes against the second supporting portion 32 as the roller body 11 advances, so that the free end of the flange portion 22 can be inserted into the gap 10 a, thereby constraining the free end of the flange portion 22 .
  • the number of the necking and flanging rollers 10 is multiple, and the plurality of necking and flanging rollers 10 are arranged at intervals on the outer periphery of the support member 30 .
  • a plurality of necking and flanging rollers 10 are distributed at intervals and can be fed in the radial direction of the support member 30 at the same time. At the same time, the plurality of necking and flanging rollers 10 can be fed along the support member 30 ( The housing 20) revolves. Referring to FIG. 5 , the number of the necking and flanging rollers 10 is two, and the two necking and flanging rollers 10 are symmetrically distributed along the central axis of the support member 30 .
  • the technical solution of the embodiment of the present application is to provide a plurality of necking and flanging rollers 10 , and the plurality of necking and flanging rollers 10 are arranged at intervals around the periphery of the support member 30 , so that the force on the housing 20 can be uniform, and the housing 20 can be improved.
  • the stability during the necking and flanging process reduces the risk of damage to the housing 20 and improves the dimensional accuracy of the flanging portion 22 .
  • multiple necking and flanging rollers 10 work simultaneously, which can improve the efficiency of necking and flanging the housing 20, thereby improving the production efficiency of the battery.
  • the number of the necking and flanging rollers 10 in the necking and flanging mechanism can also be one.
  • the necking and flanging mechanism further includes a first driving member (not shown in the figure), which is used to drive the necking and flanging roller 10 to move in the radial direction of the support member 30 .
  • the first driving component is a component capable of outputting linear motion to realize the radial movement of the necking and flanging roller 10 along the support member 30 . Since the solution for the roller to realize radial feed to the housing 20 through the first driving part is a conventional solution in the necking and flanging process, the first driving part will not be described in detail in this embodiment.
  • the first driving part includes But it is not limited to linear push rods, single-axis manipulators, cylinders and other equipment that can output linear motion.
  • the necking and flanging roller 10 can be fed to the housing 20 along the radial direction of the support member 30 to form the necking portion 21 and the housing 20 on the housing 20 .
  • Flange part 22 By arranging the first driving member, the necking and flanging roller 10 can be fed to the housing 20 along the radial direction of the support member 30 to form the necking portion 21 and the housing 20 on the housing 20 .
  • the necking and flanging mechanism further includes a second driving member (not shown in the figure), and the second driving member is used to drive the necking and flanging roller 10 to rotate around the support member 30 .
  • the second driving component is a component capable of outputting circumferential motion to enable the necking and flanging roller 10 to move in the circumferential direction along the support member 30 to revolve around the housing 20 . Since the roller realizes circumferential movement along the housing 20 through the second driving member, it is a conventional solution in the necking and flanging process, so the second driving member will not be described in detail in this embodiment.
  • the technical solution of the embodiment of the present application enables the necking and flanging roller 10 to revolve around the housing 20 by arranging a second driving member, thereby ensuring that the housing 20 is evenly stressed and improving the stability of the housing 20 during the necking and flanging process. stability and improve the dimensional accuracy of the flange portion 22.
  • the necking and flanging mechanism further includes a tray 33 , which is arranged opposite to the support member 30 along the axial direction of the support member 30 for supporting the housing 20 .
  • the tray 33 is a component that is opposite to the support member 30 along the axial direction of the support member 30 and supports the housing 20 . By cooperating with the support member 30 , the tray 33 can keep the housing 20 stationary and prevent the housing 20 from being displaced. In some embodiments, the tray 33 is configured to always support the housing 20 to avoid the axial displacement of the housing 20 due to extrusion deformation. For example, the tray 33 is pushed along the support member 30 by the pushing mechanism. The axial direction of the support member 30 is pressed, thereby ensuring that the housing 20 is in a stationary state.
  • the technical solution of the embodiment of the present application is to set the tray 33 to support the housing 20 so that the housing 20 remains stationary under the action of the support 30 and the tray 33, thereby improving the stability of the housing 20 during the necking and flanging process. Ensure the quality of flanging.
  • Figure 11 is a cross-sectional view of the B-B direction in Figure 6.
  • Figure 12 is a casing 20 after being rolled by the groove roller 34 in some embodiments of the present application.
  • schematic diagram, Figure 13 is an enlarged view of E in Figure 12.
  • the necking and flanging mechanism also includes a rolling groove roller 34.
  • the rolling groove roller 34 is provided on the outer periphery of the support member 30 and is used to roll-form the second groove 23 on the housing 20.
  • the rolling groove roller 34 is along the periphery of the support member 30. To set.
  • the outer circumferential contour of the rolling groove roller 34 is arc-shaped, and the second groove 23 is rolled and formed on the housing 20 by feeding toward the housing 20 .
  • the second groove is the part of the housing 20 that is formed before the constriction portion 21 is extruded.
  • the second groove 23 is provided around the housing 20 .
  • the technical solution of the embodiment of the present application is that before the shrinkage portion 21 and the flange portion 22 are formed on the housing 20, the groove roller 34 is fed to the housing 20 to roll-form the second groove 23 on the housing 20. , and then by feeding the roller body 11 to the second groove 23, the difficulty of forming the constriction portion 21 can be reduced.
  • the second groove is first rolled and formed on the housing 20 (along the radial direction of the support member 30, the projection of the second groove 23 not on the electrode assembly (not shown in the figure)), and then the second groove 23 is rolled by the roller body 11 to form the constriction portion 21, which can reduce the deformation area of the housing 20 and prevent the deformation area of the housing 20 from being excessive. It is large enough to interfere with the electrode assembly inside the housing 20, thereby ensuring the safety of the electrode assembly.
  • the roller body 11 has a first surface 110 away from the limiting portion 12 , and the plane where the first surface 110 is located is between two opposite surfaces of the grooved roller 34 along its axial direction. .
  • the plane where the first surface 110 is located is located between two opposite surfaces of the grooved roller 34 along its axial direction means that along the radial direction of the support member 30 , at least part of the projection of the roller body 11 coincides with the projection of the grooved roller 34 .
  • the deformation of the housing 20 is caused by the feeding of the roller body 11
  • the position starts in the second groove 23 to avoid interference between the constricted portion 21 and the electrode assembly, ensuring the safety of the electrode assembly.
  • the deformation position of the housing 20 caused by the feeding of the roller body 11 starts in the second groove 23 means that the end of the deformation position of the housing 20 caused by the feeding of the roller body 11 away from the flange portion 22 is limited to in the second groove 23 to prevent the deformation of the housing 20 from causing interference to the electrode assembly (not shown in the figure) in the housing 20 .
  • the thickness of the roller body 11 is greater than the thickness of the groove roller 34 .
  • the thickness of the roller body 11 refers to the size of the roller body 11 in its axial direction.
  • the thickness of the constricted portion 21 in the axial direction of the housing 20 The dimensions correspond to the thickness of the roller body 11 .
  • the thickness of the groove roller 34 refers to the size of the groove roller 34 in its axial direction.
  • the second groove 23 is in the axial direction of the housing 20.
  • the dimensions above correspond to the thickness of the grooved roller 34.
  • the thickness of the roller body 11 is greater than the thickness of the grooved roller 34, so that the shell 20 can effectively form the constriction portion 21, thereby ensuring the flanging quality.
  • Figure 14 is a schematic diagram of the necking and flanging roller 10 and the second groove 23 in some embodiments of the present application.
  • Figure 15 is a schematic diagram of the necking and flanging roller 10 extruding the shell in some embodiments of the present application.
  • Figure 16 is a schematic view of the shell 20 formed with a constriction portion 21 and a flange portion 22 in some embodiments of the present application.
  • the working process of the necking and flanging mechanism can be as follows:
  • the housing 20 is disposed between the support member 30 and the tray 33, so that the housing 20 remains stationary; wherein, the first support part 31 and the second support part 32 of the support member 30 extend into the housing 20 , the inner wall of the housing 20 and the outer peripheral surface of the second supporting part 32 abut.
  • the groove roller 34 works, revolves along the casing 20 and feeds along the radial direction of the casing 20, squeezing the wall surface of the casing 20 to roll-form the second part on the casing 20. Groove 23, and then the groove roller 34 exits.
  • the necking and flanging roller 10 works, revolves along the casing 20 and feeds along the radial direction of the casing 20, squeezing the wall surface of the casing 20, based on the second groove 23, in the casing 20
  • the wall surface of the body 20 extrudes the constricted portion 21 and the flanged portion 22.
  • the flange portion 22 is perpendicular to the central axis of the housing 20 under the constraints of the limiting portion 12 to have higher flange quality.
  • the present application also provides a battery manufacturing equipment.
  • the battery manufacturing equipment includes the necking and flanging mechanism provided in the above embodiments.
  • the necking and flanging mechanism is used to form the necking portion 21 on the housing 20 and flanging portion 22.
  • the present application provides a necking and flanging roller 10 , which is used to feed along the radial direction of the shell 20 to fix the shell.
  • a constricted portion 21 and a flanged portion 22 are formed on the body 20 .
  • the necking and flanging roller 10 includes a roller body 11 , a limiting part 12 and a connecting part 13 .
  • the roller body 11, the connecting part 13 and the limiting part 12 are connected in sequence and arranged coaxially.
  • the maximum diameter of the connecting portion 13 is smaller than the minimum diameter of the limiting portion 12
  • the maximum diameter of the limiting portion 12 is smaller than the minimum diameter of the roller body 11 .
  • a gap 10 a is formed between the roller body 11 and the limiting part 12 , and the gap 10 a is a first groove 10 b provided around the connecting part 13 .
  • the surface of the limiting portion 12 facing the roller body 11 is a flat surface 121 , and the flat surface 121 is perpendicular to the central axis of the roller body 11 .
  • the outer peripheral surface of the limiting portion 12 includes a guide slope 120, which is connected to the flat surface 121.
  • the guide slope 120 is inclined relative to the central axis of the roller body 11.
  • the guide slope 120 is used to guide the free end of the flange portion 22 into the third roller body.
  • a groove 10b is constrained by the flat surface 121 to be perpendicular to the central axis of the housing 20.

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Abstract

本申请公开一种缩颈翻边滚轮和缩颈翻边机构。缩颈翻边滚轮，用于在壳体上成型缩颈部和翻边部，包括：滚轮本体；限位部，沿滚轮本体的轴向与滚轮本体相对设置；其中，滚轮本体和限位部之间形成有间隙，间隙供翻边部的自由端插入，并限制自由端弯曲变形。本申请提供的技术方案能够提高电池的质量。

Description

缩颈翻边滚轮、缩颈翻边机构和电池制造设备 技术领域
本申请涉及电池生产技术领域，具体而言，涉及一种缩颈翻边滚轮、缩颈翻边机构和电池制造设备。
背景技术
节能减排是汽车产业可持续发展的关键，电动车辆由于其节能环保的优势成为汽车产业可持续发展的重要组成部分。对于电动车辆而言，电池技术又是关乎其发展的一项重要因素。
在电池技术的发展中，如何提高电池的质量，是电池技术中一个亟需解决的技术问题。
发明内容
本申请提供了一种缩颈翻边滚轮、缩颈翻边机构和电池制造设备，其能够提高电池的质量。
本申请是通过下述技术方案实现的：
第一方面，本申请提供一种缩颈翻边滚轮，用于在壳体上成型缩颈部和翻边部，包括：滚轮本体；限位部，沿所述滚轮本体的轴向与所述滚轮本体相对设置；其中，所述滚轮本体和所述限位部之间形成有间隙，所述间隙供所述翻边部的自由端插入，并限制所述自由端弯曲变形。
本申请实施例的技术方案，电池单体通常采用卷封工艺封口，在对电池单体的壳体进行卷封之前，壳体上需要成型缩颈部和翻边部才能实现卷封。缩颈翻边滚轮用于在壳体上成型缩颈部和翻边部，滚轮本体向壳体进给使得壳体径向变形形成缩颈部且使得壳体的端部向外弯折形成翻边部。随着滚轮本体的不断进给，翻边部的自由端插入于滚轮本体和限位部之间的间隙中，且在滚轮本体的轴向(壳体的轴向)上得到约束(例如，翻边部的自由端在限位部的约束下垂直于壳体的轴向)，避免因翻边部的自由端缺少约束，导致其自由端翘起的情况发生，保证壳体翻边的精度和质量，以使得壳体和端盖的卷封质量高，进而使得电池单体以及电池具有较高的质量。
在一些实施例中，所述限位部与所述滚轮本体同轴设置，所述限位部的最大直径小于所述滚轮本体的最小直径。
本申请实施例的技术方案，限位部和滚轮本体同轴设置，且限位部的最大直径小于滚轮本体的最小直径，能够形成供翻边部向间隙插入的避让区域，避免限位部对 翻边部造成干涉。
在一些实施例中，所述限位部的外周面包括导向斜面，所述导向斜面相对于所述滚轮本体的中心轴线倾斜设置，所述导向斜面用于引导所述自由端进入所述间隙。
本申请实施例的技术方案，通过设置导向斜面，引导翻边部的自由端沿着导向斜面逐渐形变以进入间隙，降低翻边部因应力集中而断裂破损的风险，进而保证翻边的质量。
在一些实施例中，所述缩颈翻边滚轮还包括：连接部，设置在所述滚轮本体和所述限位部之间，并连接所述滚轮本体和所述限位部；其中，所述间隙为环绕所述连接部设置的第一凹槽。
本申请实施例的技术方案，滚轮本体和限位部通过连接部相互连接，使得缩颈翻边滚轮结构紧凑。同时，由于间隙为环绕连接部设置的第一凹槽，故在进行缩颈翻边工序时，缩颈翻边滚轮绕壳体公转，在壳体的周向上，翻边部的自由端均能够得到限位部的约束，保证壳体的周向的翻边质量和效率，进而保证电池的质量。
在一些实施例中，所述连接部与所述滚轮本体同轴设置。
本申请实施例的技术方案，连接部与滚轮本体同轴设置，使得缩颈翻边滚轮外观整齐，且在挤压壳体时受力均匀。
在一些实施例中，所述限位部、所述连接部与所述滚轮本体一体成型。
本申请实施例的技术方案，缩颈翻边滚轮为一体成型结构，较其为分体式结构，能够提高缩颈翻边滚轮的制造效率以及结构强度。
第二方面，本申请还提供一种缩颈翻边机构，包括：支撑件，至少部分地设置于壳体内部，以支撑所述壳体；根据第一方面中任一实施例所述的缩颈翻边滚轮，设置于所述支撑件的外周，所述缩颈翻边滚轮用于与所述支撑件配合以在所述壳体上成型缩颈部和翻边部。
本申请实施例的技术方案，支撑件配合缩颈翻边滚轮，能够提高壳体翻边的质量，保证卷封的质量，进而使得电池单体以及电池具有较高的质量。
在一些实施例中，所述支撑件包括第一支撑部和第二支撑部，所述第一支撑部和所述第二支撑部沿所述壳体的轴向排列且同轴设置，所述第一支撑部的外径小于所述第二支撑部的外径；所述第一支撑部用于从壳体的开口伸入所述壳体，以配合所述缩颈翻边滚轮在所述壳体上成型所述缩颈部；所述第二支撑部用于抵顶所述壳体的内壁，以配合所述缩颈翻边滚轮在所述壳体上成型所述翻边部。
本申请实施例的技术方案，第一支撑部用于限制滚轮本体的进给距离，配合滚轮本体在壳体上成型缩颈部。第二支撑部用于限制壳体的翻边高度，配合限位部在壳体上成型翻边部且保证翻边质量。
在一些实施例中，沿所述支撑件的径向，所述滚轮本体在所述支撑件上的投影位于所述第一支撑部的外周面上，所述限位部在所述支撑件上的投影位于所述第二支撑部的外周面上。
本申请实施例的技术方案，在缩颈翻边工序中，滚轮本体向第一支撑件的外周面抵顶，实现对壳体的进给以在壳体上成型缩颈部。限位部随滚轮本体的进给向第二支撑部抵顶，以实现翻边部的自由端向间隙插入，进而实现对翻边部的自由端的约束。
在一些实施例中，所述缩颈翻边滚轮的数量为多个，多个所述缩颈翻边滚轮间隔设置于所述支撑件的外周。
本申请实施例的技术方案，通过设置多个缩颈翻边滚轮，且多个缩颈翻边滚轮绕支撑件的外周间隔设置，能够使得壳体受力均匀，提高壳体在缩颈翻边过程中的稳定性，降低壳体破损的风险，提高翻边部的尺寸精度。同时，多个缩颈翻边滚轮同时工作，能够提高壳体缩颈翻边的效率，进而提高电池的生产效率。
在一些实施例中，所述缩颈翻边机构还包括：第一驱动件，用于驱动所述缩颈翻边滚轮沿所述支撑件的径向移动。
本申请实施例的技术方案，通过设置第一驱动件，能够实现缩颈翻边滚轮沿支撑件的径向向壳体进给，以实现在壳体上成型缩颈部和翻边部。
在一些实施例中，所述缩颈翻边机构还包括：第二驱动件，用于驱动所述缩颈翻边滚轮围绕所述支撑件转动。
本申请实施例的技术方案，通过设置第二驱动件，能够实现缩颈翻边滚轮绕壳体公转，进而保证壳体受力均匀，提高壳体在缩颈翻边过程中的稳定性，提高翻边部的尺寸精度。
在一些实施例中，所述缩颈翻边机构还包括：托盘，沿所述支撑件的轴向与所述支撑件相对设置，用于支撑所述壳体。
本申请实施例的技术方案，通过设置托盘支撑壳体，使得壳体在支撑件和托盘的作用下保持静止，进而提高壳体在缩颈翻边过程中的稳定性，保证翻边的质量。
在一些实施例中，所述缩颈翻边机构还包括：滚槽滚轮，设于所述支撑件的外周，用于在所述壳体上滚压成型第二凹槽，所述滚槽滚轮沿所述支撑件的周向设置。
本申请实施例的技术方案，在壳体成型缩颈部和翻边部之前，通过滚槽滚轮向壳体进给，以在壳体上滚压成型第二凹槽，再通过滚轮本体向第二凹槽进给，能够降低缩颈部的成型难度。同时，较直接对壳体进给以形成缩颈部的方案而言，先在壳体上滚压成型第二凹槽(沿支撑件的径向，第二凹槽的投影不处于电极组件上)，再通过滚轮本体滚压第二凹槽形成缩颈部，能够减小壳体的变形区域，防止因壳体形变区域过大而挤压壳体内部的电极组件，进而保证电极组件的安全性。
在一些实施例中，所述滚轮本体具有背离所述限位部的第一表面，所述第一表面所在的平面位于所述滚槽滚轮沿其轴向相对的两个表面之间。
本申请实施例的技术方案，由于滚轮本体的第一表面所在的平面位于滚槽滚轮沿其轴向相对的两个表面之间，故因滚轮本体进给导致壳体的形变位置始于第二凹槽内，进而避免缩颈部与电极组件发生干涉，保证电极组件的安全性。
在一些实施例中，所述滚轮本体的厚度大于所述滚槽滚轮的厚度。
本申请实施例的技术方案，滚轮本体的厚度大于滚槽滚轮的厚度，使得壳体有效地成型缩颈部，进而保证翻边质量。
第三方面，本申请还提供一种电池制造设备，包括上述实施例中任一项所述的缩颈翻边机构，所述缩颈翻边机构用于在电池的壳体上成型缩颈部和翻边部。
本申请的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本申请的某些实施例，因此不应被看作是对范围的限定，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，还可以根据这些附图获得其他相关的附图。
图1为本申请一些实施例中缩颈翻边滚轮和壳体的示意图；
图2为本申请一些实施例中成型有缩颈部和翻边部的壳体的示意图；
图3为本申请一些实施例中缩颈翻边滚轮和翻边部的局部示意图；
图4为本申请一些实施例中缩颈翻边滚轮的示意图；
图5为本申请一些实施例中缩颈翻边机构的立体图；
图6为本申请一些实施例中缩颈翻边机构的俯视图；
图7为图6中A-A向的剖视图；
图8为图7中C处的放大图；
图9为本申请一些实施例中支撑件和缩颈翻边滚轮的示意图；
图10为图9中D处的放大图；
图11为图6中B-B向的剖视图；
图12为本申请一些实施例中被滚槽滚轮滚压后壳体的示意图；
图13为图12中E处的放大图；
图14为本申请一些实施例中缩颈翻边滚轮和第二凹槽的示意图；
图15为本申请一些实施例中缩颈翻边滚轮挤压壳体时的示意图；
图16为本申请一些实施例中壳体成型出缩颈部和翻边部的示意图。
图标：10-缩颈翻边滚轮；10a-间隙；10b-第一凹槽；10c-避让区域；11-滚轮本体；110-第一表面；12-限位部；120-导向斜面；121-平整面；13-连接部；20-壳体；21-缩颈部；22-翻边部；23-第二凹槽；30-支撑件；31-第一支撑部；32-第二支撑部；33-托盘；34-滚槽滚轮。
具体实施方式
下面将结合附图对本申请技术方案的实施例进行详细的描述。以下实施例仅用于更加清楚地说明本申请的技术方案，因此只作为示例，而不能以此来限制本申请的保护范围。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同；本文中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请；本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。
在本申请实施例的描述中，技术术语“第一”“第二”等仅用于区别不同对象，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量、特定顺序或主次关系。在本申请实施例的描述中，“多个”的含义是两个以上，除非另有明确具体的限定。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
在本申请实施例的描述中，术语“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如A和/或B，可以表示：存在A，同时存在A和B，存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
在本申请实施例的描述中，术语“多个”指的是两个以上(包括两个)。
在本申请实施例的描述中，技术术语“中心”“纵向”“横向”“长度”“宽度”“厚度”“上”“下”“前”“后”“左”“右”“竖直”“水平”“顶”“底”“内”“外”“顺时针”“逆时针”“轴向”“径向”“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请实施例和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构 造和操作，因此不能理解为对本申请实施例的限制。
在本申请实施例的描述中，除非另有明确的规定和限定，技术术语“安装”“相连”“连接”“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；也可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请实施例中的具体含义。
本申请中，电池单体可以包括锂离子二次电池、锂离子一次电池、锂硫电池、钠锂离子电池、钠离子电池或镁离子电池等，本申请实施例对此并不限定。
电池单体包括壳体、端盖、电极组件和电解液，电极组件和电解液收容于壳体内，端盖用于封闭壳体的开口。端盖与壳体的连接主要有焊接和卷封两种方式。其中，卷封作为一种高效快捷的封口方式，被越来越多的应用到圆柱形电池单体的生产制造中。
电极组件由正极片、负极片和隔离膜组成。电池单体主要依靠金属离子在正极片和负极片之间移动来工作。正极片包括正极集流体和正极活性物质层，正极活性物质层涂覆于正极集流体的表面，未涂敷正极活性物质层的正极集流体凸出于已涂覆正极活性物质层的正极集流体，未涂敷正极活性物质层的正极集流体作为正极极耳。以锂离子电池为例，正极集流体的材料可以为铝，正极活性物质可以为钴酸锂、磷酸铁锂、三元锂或锰酸锂等。负极片包括负极集流体和负极活性物质层，负极活性物质层涂覆于负极集流体的表面，未涂敷负极活性物质层的负极集流体凸出于已涂覆负极活性物质层的负极集流体，未涂敷负极活性物质层的负极集流体作为负极极耳。负极集流体的材料可以为铜，负极活性物质可以为碳或硅等。为了保证通过大电流而不发生熔断，正极极耳的数量为多个且层叠在一起，负极极耳的数量为多个且层叠在一起。隔离膜的材质可以为PP(polypropylene，聚丙烯)或PE(polyethylene，聚乙烯)等。
本申请的实施例所提到的电池是指包括一个或多个电池单体以提供更高的电压和容量的单一的物理模块。例如，本申请中所提到的电池可以包括电池模块或电池包等。
目前，从市场形势的发展来看，电动车辆成为汽车产业可持续发展的重要组成部分。电池为车辆的行驶和车辆中的各种电气元件的运行提供能量。对于电动车辆而言，电池技术又是关乎其发展的一项重要因素。在电池技术的发展中，如何提高电池的质量，是电池技术中一个亟需解决的技术问题。
上文已提及，对于圆柱形电池单体而言，采用卷封的方式进行壳体封口，可以显著提高电池单体的生产效率。然而，采用卷封封口的电池单体容易出现质量差、良品率低的问题。发明人发现，这是因为在进行卷封之前，需要进行缩颈翻边，即，在壳体靠近开口的一端成型缩颈部和翻边部。但是，在现有技术中，对电池单体的壳体 进行缩颈翻边时，由于翻边部的自由端未受到约束，翻边部的自由端容易翘起，会致使电池单体的端盖无法有效地与翻边部贴合，导致卷封质量较差，从而影响电池单体的质量。
基于以上考虑，为避免翻边部的自由端翘起，保证翻边精度，提高电池的质量，发明人经过深入研究，在缩颈翻边滚轮上设计限位部，以限制翻边部的自由端弯曲变形，进而避免翻边部的自由端翘起。
缩颈翻边滚轮用于在壳体上成型缩颈部和翻边部。作为一种实施例，壳体静止，缩颈翻边滚轮绕壳体公转的同时沿壳体的径向向壳体进给，在壳体上滚压成型缩颈部，同时壳体的开口端向外弯折形成翻边部。随着缩颈翻边滚轮的不断进给，翻边部的自由端被限位部约束，避免自由端翘起的情况发生，保证壳体翻边的精度和质量，使得端盖能够稳定地贴合于翻边部，以保证后续卷封质量，进而使得电池单体具有较高的质量。
本申请实施例公开的缩颈翻边滚轮包括但不限于在圆柱电池单体的壳体、易拉罐或者其他各种容器上成型缩颈部和翻边部。
缩颈翻边滚轮为缩颈翻边机构的部分结构，缩颈翻边机构指用于对壳体加工，在壳体上成型缩颈部和翻边部以能够实现卷封的设备。例如，缩颈翻边机构还包括第一驱动件和第二驱动件，第一驱动件用于驱动缩颈翻边滚轮向壳体进给，第二驱动件用于驱动缩颈翻边滚轮绕壳体公转，以在壳体上成型缩颈部和翻边部。
本申请的一些实施例中，请参见图1-图4，图1为本申请一些实施例中缩颈翻边滚轮10和壳体20的示意图，图2为本申请一些实施例中成型有缩颈部21和翻边部22的壳体20的示意图，图3为本申请一些实施例中缩颈翻边滚轮10和翻边部22的局部示意图，图4为本申请一些实施例中缩颈翻边滚轮10的示意图。
缩颈翻边滚轮10，用于在壳体20上成型缩颈部21和翻边部22，包括滚轮本体11和限位部12。限位部12沿滚轮本体11的轴向与滚轮本体11相对设置。其中，滚轮本体11和限位部12之间形成有间隙10a，间隙10a供翻边部22的自由端插入，并限制自由端弯曲变形。
缩颈部21为壳体20受缩颈翻边滚轮10挤压变形而径向收缩的部位。在成型缩颈部21同时，壳体20的开口端向外弯折形成翻边部22。翻边部22用于与端盖(未示出)的边缘部一起卷绕，实现卷封。翻边部22的自由端为翻边部22远离缩颈部21的一端。
滚轮本体11为缩颈翻边滚轮10的主体部分。当缩颈翻边滚轮10沿壳体20的径向进给时，滚轮本体11的外周面与壳体20接触，对壳体20进行挤压，使得壳体20径向变形以成型缩颈部21。
限位部12为缩颈翻边滚轮10的限制翻边部22的自由端翘起的部分。
间隙10a为缩颈翻边滚轮10的供翻边部22的自由端插入的部位，翻边部22的自由端插入于间隙10a后，受限位部12的约束以避免翻边部22上翘。
通过将限位部12沿滚轮本体11的轴向与滚轮本体11相对设置，且滚轮本体11和限位部12之间形成有间隙10a，以使得滚轮本体11在对壳体20进行挤压时，翻边部22的自由端能够插入于间隙10a
并受限位部12约束，防止翻边部22的自由端翘起，以保证后续卷封的质量，进而保证电池单体的质量。
根据本申请的一些实施例，请参见图4，限位部12与滚轮本体11同轴设置，限位部12的最大直径小于滚轮本体11的最小直径。
限位部12和滚轮本体11均为回转结构，二者的中心轴线相互重合。缩颈翻边滚轮10绕壳体20公转并沿壳体20的径向进给，能够高效地在壳体20上成型缩颈部21和翻边部22。
限位部12的最大直径小于滚轮本体11的最小直径，可以指，沿缩颈翻边滚轮10的径向，限位部12的最大尺寸小于滚轮本体11的最小尺寸，使得二者之间具有避让区域10c，该避让区域10c容许翻边部22的自由端插入于间隙10a中，而不受限位部12的干涉。
限位部12和滚轮本体11同轴设置，且限位部12的最大直径小于滚轮本体11的最小直径，一方面，能够形成供翻边部22向间隙10a插入的避让区域10c，避免限位部12对翻边部22造成干涉，另一方面，限位部12和滚轮本体11能够同步运动，通过对壳体20挤压，能够高效地在壳体20上成型缩颈部21和翻边部22。
根据本申请的一些实施例，如图3和图4，限位部12的外周面包括导向斜面120，导向斜面120相对于滚轮本体11的中心轴线倾斜设置，导向斜面120用于引导自由端进入间隙10a。
导向斜面120可以为限位部12的外周面的一部分，其相对于滚轮本体11的中心轴线倾斜，以在壳体20因缩颈翻边滚轮10挤压而形变时，引导翻边部22的自由端逐渐形变弯折以进入间隙10a。
如图3和图4，限位部12面向滚轮本体11的面为平整面121，该平整面121所在的平面垂直于滚轮本体11的中心轴线(即，垂直于壳体20的轴线)。当壳体20因挤压而成型翻边部22时，翻边部22的自由端会先沿着导向斜面120逐渐变形，最终翻边部22的自由端受平整面121约束，以垂直于滚轮本体11的中心轴线。
通过设置导向斜面120，引导翻边部22的自由端沿着导向斜面120逐渐形变以进入间隙10a，较翻边部22的自由端未受引导而直接插入于间隙10a的方案而言，能够降低翻边部22因应力集中而断裂破损的风险，进而保证翻边的质量。
根据本申请的一些实施例，如图4，缩颈翻边滚轮10还包括连接部13，连接 部13设置在滚轮本体11和限位部12之间，并连接滚轮本体11和限位部12；其中，间隙10a为环绕连接部13设置的第一凹槽10b。
请参见图4，连接部13位于滚轮本体11和限位部12之间，并将滚轮本体11和限位部12连接。通过连接部13的连接，使得缩颈翻边滚轮10为整体式的结构。
滚轮本体11和限位部12通过连接部13相互连接，使得缩颈翻边滚轮10结构紧凑，空间占用率低。同时，由于间隙10a为环绕连接部13设置的第一凹槽10b，故在进行缩颈翻边工序时，缩颈翻边滚轮10绕壳体20公转，在壳体20的周向上，翻边部22的自由端的任意位置均能够得到限位部12的约束，保证壳体20的翻边质量和效率，以使得电池单体具有较高的质量。
在另一些实施例中，缩颈翻边滚轮10可以为分体式的结构，如滚轮本体11和限位部12为两个独立的部件，限位部12与滚轮本体11沿滚轮本体11轴向相对间隔设置，当滚轮本体11向壳体20进给时，翻边部22的自由端同样地能够插入于间隙10a中并被限位部12约束。同时，在另一些实施例中，连接部13可不设置于滚轮本体11和限位部12之间，连接部13可以为一个“匚”形支架，其一端设于限位部12的背离于滚轮本体11的表面，其另一端设于滚轮本体11的背离于限位部12的表面。
根据本申请的一些实施例，连接部13与滚轮本体11同轴设置。
连接部13和滚轮本体11均为回转结构，且二者的中心轴线相互重合。
连接部13和滚轮本体11同轴设置，使得缩颈翻边滚轮10外观整齐，在在挤压壳体20时受力均匀。
在一些实施例中，连接部13的最大直径小于限位部12的最小直径，即沿缩颈翻边滚轮10的径向，限位部12的最小尺寸大于连接部13的最大尺寸，以实现限位部12对翻边部22的自由端的约束，避免翻边部22的自由端翘起。
连接部13与滚轮本体11同轴设置且连接部13的最大直径小于限位部12的最小直径，故能够保证限位部12对翻边部22的自由端起到有效地约束，避免翻边部22的自由端翘起，保证卷封的质量，进而保证电池单体的质量。
根据本申请的一些实施例，限位部12、连接部13与滚轮本体11一体成型。
缩颈翻边滚轮10可通过铸造、铣削、三维打印等技术一体成型。
本申请实施例的技术方案，缩颈翻边滚轮10为一体成型结构，较其为分体式结构，能够提高缩颈翻边滚轮10的制造效率以及结构强度。
根据本申请的一些实施例，参见图5-图7，图5为本申请一些实施例中缩颈翻边机构的立体图，图6为本申请一些实施例中缩颈翻边机构的俯视图，图7为图6中A-A向的剖视图。本申请还提供一种缩颈翻边机构，包括支撑件30和缩颈翻边滚轮10。支撑件30至少部分地设置于壳体20内部，以支撑壳体20。缩颈翻边滚轮10设置于支撑件30的外周，缩颈翻边滚轮10用于与支撑件30配合以在壳体20上成型缩颈 部21和翻边部22。
壳体20具有开口，支撑件30的至少部分由该开口伸入于壳体20内部，对壳体20进行支撑，防止壳体20位移。
当支撑件30的至少部分地设置于壳体20内部时，缩颈翻边滚轮10能够沿支撑件30的径向进给，以挤压壳体20壁面，使壳体20壁面变形并抵顶于支撑件30，进而在壳体20上成型缩颈部21和翻边部22。
本申请实施例的技术方案，支撑件30配合缩颈翻边滚轮10，能够提高壳体20翻边的质量，保证后续卷封的质量，进而使得电池单体具有较高的质量。
根据本申请的一些实施例，如图8，图8为图7中C处的放大图。支撑件30包括第一支撑部31和第二支撑部32，第一支撑部31和第二支撑部32沿壳体20的轴向排列且同轴设置，第一支撑部31的外径小于第二支撑部32的外径；第一支撑部31用于从壳体20的开口伸入壳体20，以配合缩颈翻边滚轮10在壳体20上成型缩颈部21；第二支撑部32用于抵顶壳体20的内壁，以配合缩颈翻边滚轮10在壳体20上成型翻边部22。
第一支撑部31和第二支撑部32均为回转结构，二者同轴设置且沿壳体20的周向排列。第一支撑部31的外径小于第二支撑部32的外径。第一支撑部31和第二支撑部32伸入于壳体20内，第一支撑部31与壳体20内部之间的间距为缩颈翻边滚轮10进给的距离，当缩颈翻边滚轮10挤压壳体20的壁面时，将壳体20的壁面抵接于第一支撑部31。第二支撑部32与壳体20的内壁抵顶，以在缩颈翻边滚轮10挤压壳体20的壁面并使得壳体20形变时，壳体20的内壁能够沿着第二支撑部32和第一支撑部31之间的凹陷区域形变弯折，以在壳体20上成型翻边部22。
第一支撑部31的外径较第二支撑部32小，用于限制滚轮本体11的进给距离，配合滚轮本体11在壳体20上成型缩颈部21。第二支撑部32的外径较第一支撑部31大，在进行缩颈翻边工艺前，第二支撑部32能够抵顶于壳体20的开口端，当缩颈翻边滚轮10向壳体20进给，在壳体20上成型翻边部21时，第二支撑部32能够与翻边部21的内壁贴合，以限制壳体20的翻边高度，保证翻边质量。
在一些实施例中，为保证翻边部22的成型质量，降低翻边部22破裂的风险，第一支撑部31和第二支撑部32之间圆滑过渡。
根据本申请的一些实施例，如图8-图10，图9为本申请一些实施例中支撑件30和缩颈翻边滚轮10的示意图，图10为图9中D处的放大图。沿支撑件30的径向，滚轮本体11在支撑件30上的投影位于第一支撑部31的外周面上，限位部12在支撑件30上的投影位于第二支撑部32的外周面上。
“滚轮本体11在支撑件30上的投影位于第一支撑部31的外周面上”，指缩颈翻边滚轮10沿支撑件30的径向进给时，滚轮本体11将壳体20的壁面挤压至第一支撑部31的外周面，以形成缩颈部21。“限位部12在支撑件30上的投影位于第二 支撑部32的外周面上”，指缩颈翻边滚轮10沿支撑件30的径向进给时，限位部12与第二支撑部32配合，以约束翻边部22的自由端的形变位置，保证翻边质量。可选地，限位部12的朝向滚轮本体11的表面与第二支撑部32朝向第一支撑部31的表面处于同一平面，进而有效地保证翻边质量。
本申请实施例的技术方案，在缩颈翻边工艺中，滚轮本体11向第一支撑件30的外周面抵顶，实现对壳体20的挤压以在壳体20上成型缩颈部21。限位部12随滚轮本体11的进给向第二支撑部32抵顶，以实现翻边部22的自由端向间隙10a插入，进而实现对翻边部22的自由端的约束。
根据本申请的一些实施例，如图5-图7，缩颈翻边滚轮10的数量为多个，多个缩颈翻边滚轮10间隔设置于支撑件30的外周。
沿支撑件30的周向，多个缩颈翻边滚轮10的数量间隔分布，可同时沿支撑件30的径向进给，同时，多个缩颈翻边滚轮10均可沿支撑件30(壳体20)公转。参见图5，缩颈翻边滚轮10的数量为两个，两个缩颈翻边滚轮10沿支撑件30的中心轴线对称分布。
本申请实施例的技术方案，通过设置多个缩颈翻边滚轮10，且多个缩颈翻边滚轮10绕支撑件30的外周间隔设置，能够使得壳体20受力均匀，提高壳体20在缩颈翻边过程中的稳定性，降低壳体20破损的风险，提高翻边部22的尺寸精度。同时，多个缩颈翻边滚轮10同时工作，能够提高壳体20缩颈翻边的效率，进而提高电池的生产效率。
在其他实施例中，在缩颈翻边机构中的缩颈翻边滚轮10的数量也可以为一个。
根据本申请的一些实施例，缩颈翻边机构还包括第一驱动件(图中未示出)，第一驱动件用于驱动缩颈翻边滚轮10沿支撑件30的径向移动。
第一驱动件为能够输出直线运动，以实现缩颈翻边滚轮10沿支撑件30的径向移动的部件。由于滚轮通过第一驱动件实现向壳体20径向进给的方案为缩颈翻边工艺中的常规方案，故本实施例不对第一驱动件进行赘述，示例性地，第一驱动件包括但不限于直线推杆、单轴机械手、气缸等能输出直线运动的设备。
本申请实施例的技术方案，通过设置第一驱动件，能够实现缩颈翻边滚轮10沿支撑件30的径向向壳体20进给，以实现在壳体20上成型缩颈部21和翻边部22。
根据本申请的一些实施例，缩颈翻边机构还包括第二驱动件(图中未示出)，第二驱动件用于驱动缩颈翻边滚轮10围绕支撑件30转动。
第二驱动件为能够输出周向运动，以实现缩颈翻边滚轮10沿支撑件30的周向移动以实现绕壳体20公转的部件。由于滚轮通过第二驱动件实现沿壳体20的周向 运动的方案为缩颈翻边工艺中的常规方案，故本实施例不对第二驱动件进行赘述。
本申请实施例的技术方案，通过设置第二驱动件，能够实现缩颈翻边滚轮10绕壳体20公转，进而保证壳体20受力均匀，提高壳体20在缩颈翻边过程中的稳定性，提高翻边部22的尺寸精度。
根据本申请的一些实施例，请参见图5，缩颈翻边机构还包括托盘33，托盘33沿支撑件30的轴向与支撑件30相对设置，用于支撑壳体20。
托盘33为沿支撑件30的轴向与支撑件30相对设置并支撑壳体20的部件，通过与支撑件30的配合，能够使得壳体20保持静止，防止壳体20位移。在一些实施例中，托盘33被配置为能够始终支撑壳体20，以避免当壳体20因挤压变形而沿其轴向位移的情况发生，例如，托盘33被抵顶机构沿支撑件30的轴向向支撑件30抵顶，进而保证壳体20处于静止状态。
本申请实施例的技术方案，通过设置托盘33支撑壳体20，使得壳体20在支撑件30和托盘33的作用下保持静止，进而提高壳体20在缩颈翻边过程中的稳定性，保证翻边的质量。
根据本申请的一些实施例，请参见图5、图11-图13，图11为图6中B-B向的剖视图，图12为本申请一些实施例中被滚槽滚轮34滚压后壳体20的示意图，图13为图12中E处的放大图。缩颈翻边机构还包括滚槽滚轮34，滚槽滚轮34设于支撑件30的外周，用于在壳体20上滚压成型第二凹槽23，滚槽滚轮34沿支撑件30的周向设置。
滚槽滚轮34的外周轮廓呈弧状，通过向壳体20进给，以在壳体20上滚压成型第二凹槽23。第二凹槽为壳体20在挤压出缩颈部21之前成型的部位，第二凹槽23环设于壳体20。
本申请实施例的技术方案，在壳体20成型缩颈部21和翻边部22之前，通过滚槽滚轮34向壳体20进给，以在壳体20上滚压成型第二凹槽23，再通过滚轮本体11向第二凹槽23进给，能够降低缩颈部21的成型难度。同时，较直接对壳体20进给以形成缩颈部21的方案而言，先在壳体20上滚压成型第二凹槽(沿支撑件30的径向，第二凹槽23的投影不处于电极组件(图中未示出)上)，再通过滚轮本体11滚压第二凹槽23形成缩颈部21，能够减小壳体20的变形区域，防止因壳体20形变区域过大而与壳体20内部的电极组件相互干涉，进而保证电极组件的安全性。
根据本申请的一些实施例，结合图5，滚轮本体11具有背离限位部12的第一表面110，第一表面110所在的平面位于滚槽滚轮34沿其轴向相对的两个表面之间。
“第一表面110所在的平面位于滚槽滚轮34沿其轴向相对的两个表面之间”，指沿支撑件30的径向，滚轮本体11的至少部分投影和滚槽滚轮34的投影重合。
本申请实施例的技术方案，由于滚轮本体11的第一表面110所在的平面位于滚槽滚轮34沿其轴向相对的两个表面之间，故因滚轮本体11进给导致壳体20的形变位置始于第二凹槽23内，进而避免缩颈部21与电极组件发生干涉，保证电极组件的安全性。其中，“滚轮本体11进给导致壳体20的形变位置始于第二凹槽23内”，指因滚轮本体11进给导致壳体20形变的位置的远离翻边部22的一端被限制在第二凹槽23内，以防止壳体20的形变对壳体20内的电极组件(图中未示出)造成干扰。
根据本申请的一些实施例，滚轮本体11的厚度大于滚槽滚轮34的厚度。
滚轮本体11的厚度，指滚轮本体11在其轴向上的尺寸，当滚轮本体11向壳体20进给以挤压出缩颈部21时，缩颈部21在壳体20轴向上的尺寸对应于滚轮本体11的厚度。
滚槽滚轮34的厚度，指滚槽滚轮34在其轴向上的尺寸，当滚槽滚轮34滚压壳体20以成型第二凹槽23时，第二凹槽23在壳体20轴向上的尺寸对应于滚槽滚轮34的厚度。
本申请实施例的技术方案，滚轮本体11的厚度大于滚槽滚轮34的厚度，使得壳体20有效地成型缩颈部21，进而保证翻边质量。
请参见图11-图16，图14为本申请一些实施例中缩颈翻边滚轮10和第二凹槽23的示意图，图15为本申请一些实施例中缩颈翻边滚轮10挤压壳体20时的示意图，图16为本申请一些实施例中壳体20成型出缩颈部21和翻边部22的示意图。缩颈翻边机构的工作过程可以为：
如图11，将壳体20设置于支撑件30和托盘33之间，使得壳体20保持静止；其中，支撑件30的第一支撑部31和第二支撑部32伸入于壳体20内，壳体20的内壁与第二支撑部32的外周面抵顶。
如图11-图13，滚槽滚轮34工作，沿壳体20公转并沿壳体20的径向进给，对壳体20的壁面进行挤压，以在壳体20上滚压成型第二凹槽23，随后滚槽滚轮34退出。
如图14-图16，缩颈翻边滚轮10工作，沿壳体20公转并沿壳体20的径向进给，对壳体20的壁面进行挤压，基于第二凹槽23，在壳体20的壁面挤压出缩颈部21和翻边部22。翻边部22在限位部12的约束下垂直于壳体20的中心轴线，以具有较高的翻边质量。
根据本申请的一些实施例，本申请还提供一种电池制造设备，电池制造设备包括上述实施例提供的缩颈翻边机构，缩颈翻边机构用于在壳体20上成型缩颈部21和翻边部22。
根据本申请的一些实施例，请参见图1-图4，本申请提供一种缩颈翻边滚轮10，该缩颈翻边滚轮10用于沿壳体20的径向进给，以在壳体20上成型缩颈部21和 翻边部22。缩颈翻边滚轮10包括滚轮本体11、限位部12以及连接部13。沿滚轮本体11的轴向，滚轮本体11、连接部13以及限位部12依次连接且同轴设置。连接部13的最大直径小于限位部12的最小直径，限位部12的最大直径小于滚轮本体11的最小直径。滚轮本体11和限位部12之间形成有间隙10a，间隙10a为环绕连接部13设置的第一凹槽10b。
限位部12面向滚轮本体11的表面为平整面121，且该平整面121垂直于滚轮本体11的中心轴线。限位部12的外周面包括导向斜面120，导向斜面120与平整面121连接，导向斜面120相对于滚轮本体11的中心轴线倾斜设置，导向斜面120用于引导翻边部22的自由端进入第一凹槽10b并被平整面121约束，以垂直于壳体20的中心轴线。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (17)

  1. 一种缩颈翻边滚轮，用于在壳体上成型缩颈部和翻边部，其特征在于，包括：
    滚轮本体；
    限位部，沿所述滚轮本体的轴向与所述滚轮本体相对设置；
    其中，所述滚轮本体和所述限位部之间形成有间隙，所述间隙供所述翻边部的自由端插入，并限制所述自由端弯曲变形。
  2. 根据权利要求1所述的缩颈翻边滚轮，其特征在于，
    所述限位部与所述滚轮本体同轴设置，所述限位部的最大直径小于所述滚轮本体的最小直径。
  3. 根据权利要求1或2所述的缩颈翻边滚轮，其特征在于，
    所述限位部的外周面包括导向斜面，所述导向斜面相对于所述滚轮本体的中心轴线倾斜设置，所述导向斜面用于引导所述自由端进入所述间隙。
  4. 根据权利要求1-3任一项所述的缩颈翻边滚轮，其特征在于，
    所述缩颈翻边滚轮还包括：
    连接部，设置在所述滚轮本体和所述限位部之间，并连接所述滚轮本体和所述限位部；
    其中，所述间隙为环绕所述连接部设置的第一凹槽。
  5. 根据权利要求4所述的缩颈翻边滚轮，其特征在于，
    所述连接部与所述滚轮本体同轴设置。
  6. 根据权利要求4或5所述的缩颈翻边滚轮，其特征在于，
    所述限位部、所述连接部与所述滚轮本体一体成型。
  7. 一种缩颈翻边机构，其特征在于，包括：
    支撑件，至少部分地设置于壳体内部，以支撑所述壳体；
    根据权利要求1-6任一项所述的缩颈翻边滚轮，设置于所述支撑件的外周，所述缩颈翻边滚轮用于与所述支撑件配合以在所述壳体上成型缩颈部和翻边部。
  8. 根据权利要求7所述的缩颈翻边机构，其特征在于，
    所述支撑件包括第一支撑部和第二支撑部，所述第一支撑部和所述第二支撑部沿所述壳体的轴向排列且同轴设置，所述第一支撑部的外径小于所述第二支撑部的外径；
    所述第一支撑部用于从壳体的开口伸入所述壳体，以配合所述缩颈翻边滚轮在所述壳体上成型所述缩颈部；所述第二支撑部用于抵顶所述壳体的内壁，以配合所述缩颈翻边滚轮在所述壳体上成型所述翻边部。
  9. 根据权利要求8所述的缩颈翻边机构，其特征在于，
    沿所述支撑件的径向，所述滚轮本体在所述支撑件上的投影位于所述第一支撑部的外周面上，所述限位部在所述支撑件上的投影位于所述第二支撑部的外周面上。
  10. 根据权利要求7-9任一项所述的缩颈翻边机构，其特征在于，
    所述缩颈翻边滚轮的数量为多个，多个所述缩颈翻边滚轮间隔设置于所述支撑件 的外周。
  11. 根据权利要求7-10任一项所述的缩颈翻边机构，其特征在于，所述缩颈翻边机构还包括：
    第一驱动件，用于驱动所述缩颈翻边滚轮沿所述支撑件的径向移动。
  12. 根据权利要求7-11任一项所述的缩颈翻边机构，其特征在于，所述缩颈翻边机构还包括：
    第二驱动件，用于驱动所述缩颈翻边滚轮围绕所述支撑件转动。
  13. 根据权利要求7-12任一项所述的缩颈翻边机构，其特征在于，
    所述缩颈翻边机构还包括：
    托盘，沿所述支撑件的轴向与所述支撑件相对设置，用于支撑所述壳体。
  14. 根据权利要求7-13任一项所述的缩颈翻边机构，其特征在于，
    所述缩颈翻边机构还包括：
    滚槽滚轮，设于所述支撑件的外周，用于在所述壳体上滚压成型第二凹槽，所述滚槽滚轮沿所述支撑件的周向设置。
  15. 根据权利要求14所述的缩颈翻边机构，其特征在于，所述滚轮本体具有背离所述限位部的第一表面，所述第一表面所在的平面位于所述滚槽滚轮沿其轴向相对的两个表面之间。
  16. 根据权利要求14或15所述的缩颈翻边机构，其特征在于，所述滚轮本体的厚度大于所述滚槽滚轮的厚度。
  17. 一种电池制造设备，其特征在于，包括根据权利要求7-16任一项所述的缩颈翻边机构，所述缩颈翻边机构用于在壳体上成型缩颈部和翻边部。
PCT/CN2022/094041 2022-05-20 2022-05-20 缩颈翻边滚轮、缩颈翻边机构和电池制造设备 WO2023221076A1 (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117358847A (zh) * 2023-12-05 2024-01-09 沧州宏涛智能设备有限公司 一种缩颈、收口、压筋一体机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2432658A (en) * 1945-04-20 1947-12-16 Continental Can Co Method of and apparatus for flanging cans
US3688538A (en) * 1969-10-24 1972-09-05 American Can Co Apparatus for necking-in and flanging can bodies
US4341103A (en) * 1980-09-04 1982-07-27 Ball Corporation Spin-necker flanger for beverage containers
US4512172A (en) * 1980-09-08 1985-04-23 Metal Box Plc Method of forming flanged containers
US4870847A (en) * 1988-05-20 1989-10-03 Ihly Industries, Inc. Method and apparatus for forming outwardly projecting beads on cylindrical objects
CN2182692Y (zh) * 1993-10-15 1994-11-16 黄岩市城关盛达空压机厂 双功能缩颈翻边机

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2432658A (en) * 1945-04-20 1947-12-16 Continental Can Co Method of and apparatus for flanging cans
US3688538A (en) * 1969-10-24 1972-09-05 American Can Co Apparatus for necking-in and flanging can bodies
US4341103A (en) * 1980-09-04 1982-07-27 Ball Corporation Spin-necker flanger for beverage containers
US4512172A (en) * 1980-09-08 1985-04-23 Metal Box Plc Method of forming flanged containers
US4870847A (en) * 1988-05-20 1989-10-03 Ihly Industries, Inc. Method and apparatus for forming outwardly projecting beads on cylindrical objects
CN2182692Y (zh) * 1993-10-15 1994-11-16 黄岩市城关盛达空压机厂 双功能缩颈翻边机

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117358847A (zh) * 2023-12-05 2024-01-09 沧州宏涛智能设备有限公司 一种缩颈、收口、压筋一体机
CN117358847B (zh) * 2023-12-05 2024-02-23 沧州宏涛智能设备有限公司 一种缩颈、收口、压筋一体机

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