WO2022262351A1 - 清洁设备、电池单体、用电装置及电池单体加工方法 - Google Patents

清洁设备、电池单体、用电装置及电池单体加工方法 Download PDF

Info

Publication number
WO2022262351A1
WO2022262351A1 PCT/CN2022/082765 CN2022082765W WO2022262351A1 WO 2022262351 A1 WO2022262351 A1 WO 2022262351A1 CN 2022082765 W CN2022082765 W CN 2022082765W WO 2022262351 A1 WO2022262351 A1 WO 2022262351A1
Authority
WO
WIPO (PCT)
Prior art keywords
milling
battery cell
blade
welding
injection hole
Prior art date
Application number
PCT/CN2022/082765
Other languages
English (en)
French (fr)
Inventor
白清林
温裕乾
柏湘昀
Original Assignee
宁德时代新能源科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Publication of WO2022262351A1 publication Critical patent/WO2022262351A1/zh

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/02—Milling-cutters characterised by the shape of the cutter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042—Devices for removing chips
    • B23Q11/0046—Devices for removing chips by sucking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042—Devices for removing chips
    • B23Q11/005—Devices for removing chips by blowing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/08—Protective coverings for parts of machine tools; Splash guards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
    • 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
    • H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
    • H01M50/169—Lids or covers characterised by the methods of assembling casings with lids by welding, brazing or soldering
    • 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
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
    • 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
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
    • H01M50/627—Filling ports
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the technical field of batteries, in particular to a cleaning device for cleaning liquid injection holes of battery cells and a battery cell processing method.
  • the present application provides a cleaning device for cleaning the first surface of the battery cell after the step of injecting the electrolyte into the battery cell and before the step of welding the sealing nail, the first surface Surrounding the injection hole, the cleaning device includes:
  • the milling device is arranged on the frame, the frame drives the milling device to move, the milling device includes a milling cutter, and the milling cutter is used for milling the first surface , to clean the first surface, so that the first surface forms a welding surface for welding the sealing nail.
  • the first surface surrounding the liquid injection hole is milled by a milling cutter, so that the first surface forms a welding surface for welding the sealing nail, which can be thoroughly cleaned by the cleaning equipment
  • the electrolyte residue around the liquid injection hole completely solves the influence of electrolyte and other pollutants on the sealing nail welding, and ensures the welding quality of the sealing nail.
  • the milling cutter includes:
  • the first cutting edge is located on the outer periphery of the end face of the milling cutter, the first cutting edge mills the first surface to form the welding surface;
  • the second blade is located inside the first blade, and the second blade protrudes relative to the first blade.
  • the milling cutter has a first cutting edge and a second cutting edge, so the welding surface and the second milling surface lower than the welding surface can be formed by one milling, which greatly improves the milling efficiency and precision.
  • the height of the second cutting edge protruding toward the milling end surface relative to the first cutting edge is 0.3 mm to 1.2 mm.
  • the height of the second cutting edge protruding toward the milling end surface relative to the first cutting edge is equivalent to the thickness of the sealing nail, so that when the sealing nail is welded, the upper surface of the sealing nail is in contact with the sealing nail.
  • the above welding surface is flush.
  • the milling cutter also includes:
  • the third blade, the third blade connects the first blade and the second blade, and the included angle between the third blade and the second blade is 105 degrees to 150 degrees.
  • the angle between the second milling surface and the third milling surface formed by milling the third cutting edge and the second cutting edge of the milling cutter is 105 degrees to 150 degrees.
  • the included angle between the surface and the side is equal, thereby facilitating the assembly of the sealing nail, avoiding the skewing of the sealing nail, and enhancing the sealing effect of the sealing nail.
  • a avoidance hole avoiding the liquid injection hole is provided in the middle of the end surface.
  • the avoidance hole can prevent the milling cutter from cutting the rubber nail in the liquid injection hole during milling.
  • the cleaning device further includes a pressure detection device and a control device, the pressure detection device is used to detect the milling pressure of the milling cutter, and the control device controls the feeding movement of the milling cutter according to the milling pressure, Keep the milling pressure of the milling cutter within a set pressure range.
  • the milling pressure of the milling cutter can be detected and controlled by the pressure detection device and the control device, so as to avoid damage to the battery cell due to excessive milling pressure, and at the same time ensure the milling efficiency of the milling cutter .
  • the cleaning device further includes an air blowing nozzle, and the air blowing nozzle blows air to the first surface to remove impurities generated by the milling.
  • the air blowing nozzle can remove the impurities generated by the milling in time to prevent the impurities from causing a short circuit of the battery cells, and can take away the temperature generated during milling to prevent the surface temperature of the liquid injection hole from being too high.
  • the cleaning equipment also includes a dust removal cover, the dust removal cover is arranged above the milling cutter, and the dust removal cover is connected with a negative pressure suction pipe.
  • the dust cover can absorb the impurities generated by milling in time to prevent the impurities from causing the short circuit of the battery cells.
  • the cleaning equipment also includes a visual positioning device, the visual positioning device is arranged on the frame, and the frame drives the visual positioning device and the milling cutter to move synchronously, and the visual positioning device uses to locate the injection hole.
  • the liquid injection hole can be automatically positioned by the visual positioning device, which can improve milling efficiency and precision.
  • a battery cell processing method comprising the following steps:
  • a sealing nail is welded on the welding surface to seal the liquid injection hole.
  • the first surface surrounding the liquid injection hole is milled by a milling cutter, so that the first surface forms a welding surface for welding the sealing nail, which can be thoroughly cleaned by the cleaning equipment
  • the electrolyte residue around the liquid injection hole completely solves the influence of electrolyte and other pollutants on the sealing nail welding, and ensures the welding quality of the sealing nail.
  • the thickness of the first surface milled by the milling device is 0.1mm-0.5mm.
  • the milling device mills the first surface to a thickness of 0.1mm-0.5mm, which can effectively remove impurities on the first surface, thereby ensuring Welding quality of sealing nails.
  • the shape of the sealing nail is a truncated cone
  • the milling device mills the first surface to form a slope surface adapted to the side of the truncated cone, and the welding surface is located on the outer periphery of the slope surface.
  • the slope surface formed by milling matches the side of the truncated cone, so as to facilitate the assembly of the sealing nail, avoid skewing of the sealing nail, and enhance the sealing effect of the sealing nail.
  • a battery cell the battery cell is made by the battery cell processing method described in any one of the above technical solutions.
  • An electrical device the electrical device includes the battery unit described in the technical solution above, and the battery is used to provide electrical energy.
  • the above technical solution provides a cleaning device for cleaning the first surface of the battery cell after the step of injecting the electrolyte into the battery cell and before the step of welding the sealing nail
  • the cleaning equipment includes: a frame and a milling device, the milling device is arranged on the frame, the frame drives the milling device to move, the milling device includes a milling cutter, and the milling cutter is used for milling
  • the first surface is used to clean the first surface so that the first surface forms a welding surface for welding the sealing nail. Therefore, the electrolyte residue around the liquid injection hole can be thoroughly cleaned by the cleaning device, the influence of electrolyte and other pollutants on the welding of the sealing nail can be completely resolved, and the welding quality of the sealing nail can be guaranteed.
  • FIG. 1 is a schematic diagram of a partial structure of a vehicle disclosed in an embodiment of the present application
  • Fig. 2 is a schematic structural diagram of a battery pack disclosed in an embodiment of the present application.
  • Fig. 3 is a schematic structural diagram of a battery cell disclosed in an embodiment of the present application.
  • Fig. 4 is a schematic structural diagram of a cleaning device disclosed in an embodiment of the present application.
  • Fig. 5 is a sectional view along the axial direction of a milling cutter disclosed in an embodiment of the present application
  • Fig. 6 is a top view of the first surface after milling disclosed in an embodiment of the present application.
  • Fig. 7 is a cross-sectional view along the thickness direction of the liquid injection hole after milling disclosed in an embodiment of the present application;
  • Fig. 8 is a sectional view along the thickness direction of the welded end cap disclosed by an embodiment of the present application.
  • FIG. 9 is a flowchart of a battery cell processing method disclosed in an embodiment of the present application.
  • connection should be interpreted in a broad sense, for example, it can be a fixed connection or a flexible connection. Disassembled connection, or integral connection; it can be directly connected or indirectly connected through an intermediary.
  • connection should be interpreted in a broad sense, for example, it can be a fixed connection or a flexible connection. Disassembled connection, or integral connection; it can be directly connected or indirectly connected through an intermediary.
  • the main process flow of battery cell packaging includes: electrolyte filling ⁇ liquid injection hole pressing glue nail ⁇ dropping solvent ⁇ mechanical wiping ⁇ blowing dry gas ⁇ laser cleaning ⁇ sealing nail welding, among which, dropping solvent , Mechanical wiping, blowing dry gas and laser cleaning processes are used to remove dirt such as electrolyte crystals remaining around the liquid injection hole.
  • electrolyte filling liquid injection hole pressing glue nail ⁇ dropping solvent ⁇ mechanical wiping ⁇ blowing dry gas ⁇ laser cleaning ⁇ sealing nail welding, among which, dropping solvent , Mechanical wiping, blowing dry gas and laser cleaning processes are used to remove dirt such as electrolyte crystals remaining around the liquid injection hole.
  • welding defects such as pinholes and explosion points are likely to occur when the sealing nails of the liquid injection holes are welded.
  • the applicant provides a cleaning device for injecting liquid around the battery cell after the step of injecting electrolyte into the battery cell and before the welding step of the sealing nail Clean the first surface of the hole, so as to remove the electrolyte residue around the liquid injection hole, especially the liquid electrolyte and other dirt, so as to completely solve the influence of electrolyte and other pollutants on the welding of the sealing nail, and ensure the sealing nail of the liquid injection hole. welding quality.
  • the embodiment of the present application provides an electric device using a battery cell 1 as a power source.
  • the electrical device may be, but not limited to, a vehicle, a ship, or an aircraft.
  • a battery pack 200 can be used to supply power to a vehicle, and a plurality of battery cells 1 are arranged in the battery pack.
  • Vehicles can be fuel vehicles, gas vehicles or new energy vehicles. New energy vehicles can be pure electric vehicles, hybrid vehicles or extended-range vehicles.
  • a vehicle may include a motor 300 , a controller 100 and a battery pack 200 .
  • the controller 100 is used to control the battery pack 200 to supply power to the motor 300 .
  • the motor 300 is connected to the wheels through a transmission mechanism, so as to drive the vehicle to travel.
  • the battery pack 200 can be used as a driving power source of the vehicle, replacing or partially replacing fuel oil or natural gas to provide driving power for the vehicle.
  • the battery pack 200 may be provided at the bottom or front or rear of the vehicle. The battery pack 200 may be used to power the vehicle.
  • the embodiment of the present application provides a battery pack 200 , a plurality of battery cells 1 can be connected to form a battery module 21 , and a plurality of battery modules 21 can be connected to form a battery pack 200 .
  • the battery pack 200 includes a box, and the shape of the box is not limited.
  • the box body can be a frame-shaped box body, a disc-shaped box body or a box-shaped box body, etc.
  • the box body includes a lower case 23 and an upper case 22 that covers the lower case 23 .
  • the upper casing 22 and the lower casing 23 are closed to form a receiving portion, and the upper casing 22 and the lower casing 23 can be locked and fixed by fasteners such as bolts after being closed. As shown in FIG.
  • the battery module 21 includes a plurality of battery cells 1 , and the plurality of battery cells 1 can be electrically connected in series, in parallel or in parallel.
  • the battery pack 200 may include a plurality of battery cells 1, wherein the plurality of battery cells 1 may be connected in series, in parallel, or in parallel. There are both series and parallel connections. That is to say, a plurality of battery cells 1 can be directly disposed in the receiving portion of the case to form the battery pack 200 .
  • the battery cell 1 includes a battery case 11 , an end cap 12 and an electrode assembly 13 disposed in the battery case 11 .
  • the battery casing 11 in the embodiment of the present application is a rectangular parallelepiped structure or other structures.
  • the battery case 11 has an inner space for accommodating the electrode assembly 13 and electrolyte, and an opening communicating with the inner space, and the end cap 12 fits into the opening.
  • the battery case 11 and the end cap 12 can be made of materials such as aluminum, aluminum alloy or plastic.
  • the end cap 12 is provided with a liquid injection hole 121 , an explosion-proof valve 122 and two electrode terminals 14 , wherein one electrode terminal 14 is a positive terminal and the other electrode terminal 14 is a negative terminal.
  • the first surface 120 is the upper surface of the end cover 12 , that is, the surface of the end cover 12 away from the battery case 11 .
  • the electrode assembly 13 of the embodiment of the present application can be formed by stacking or winding a first pole piece, a second pole piece and a separator, wherein the separator is an insulator between the first pole piece and the second pole piece.
  • the first pole piece is a positive pole piece
  • the second pole piece is a negative pole piece.
  • Both positive and negative electrodes include coated and uncoated regions.
  • the active material of the positive plate is coated on the coating area of the positive plate, and the active material of the negative plate is coated on the coating area of the negative plate. On the coated area, the active material is coated on the current collector formed of the thin metal plate, and on the uncoated area, the active material is not coated.
  • the electrode assembly 13 includes a main body, a positive pole ear and a negative pole ear.
  • the positive pole ear and the negative pole ear are respectively extended from one end of the main body.
  • the conductive connector is connected to the other electrode terminal 14 .
  • the positive pole tab and the negative pole tab can be located at one end of the main body, or can be respectively located at two ends of the main body.
  • FIG. 4 it is a schematic structural diagram of the cleaning equipment disclosed in the embodiment of the present application.
  • the cleaning equipment 400 is used to clean the end cap of the battery cell 1 after the step of injecting the electrolyte into the battery cell 1 and before the welding of the sealing nail 15. 12, the peripheral surface of the liquid injection hole 121 (i.e. the first surface 120) is cleaned to remove the electrolyte residue around the liquid injection hole, especially the dirt such as liquid electrolyte, thereby improving the welding of the sealing nail 15 of the liquid injection hole. quality.
  • the cleaning device 400 includes a frame 41 and a milling device 42 , and the milling device 42 is arranged on the frame 41 .
  • the frame 41 may include a battery cell fixing device, which can provide certain support and fixation for the battery cell 1 to be processed, thereby further preventing the position of the battery cell 1 from being misaligned during the milling operation. shift.
  • the battery cell fixing device may be a flat structure supported by hard materials such as metal and a clamping structure for clamping the battery cell 1 .
  • the milling device 42 is arranged on the frame 41 , and the frame 41 is provided with driving devices such as motors, hydraulic cylinders, and air cylinders.
  • the frame 41 can drive the milling device 42 to move through the driving device, thereby milling the battery cells 1 .
  • Milling device 42 includes milling cutter 421, and milling cutter 421 can be made of tungsten steel or cemented carbide material, and milling cutter 421 is connected with power mechanism such as motor, and this power mechanism drives milling cutter 421 to rotate axially, thereby produces milling cutter to battery cell.
  • the outer peripheral surface of the liquid injection hole 121 of the body 1 ie, the upper first surface 120 ) is milled, thereby cleaning the outer peripheral surface of the liquid injection hole 121 .
  • the material on the surface around the liquid injection hole 121 can be removed to a certain thickness by milling to expose fresh metal that is not polluted by the electrolyte, and this fresh metal that is not polluted by the electrolyte is used as the welding surface of the welding sealing nail 15, thereby improving the sealing of the sealing hole Nail 15 welding quality.
  • the milling device 42 can be arranged above the battery cell 1 to be processed, and the driving device drives the milling device 42 to move downward to mill the battery cell 1 .
  • the driving device can not only drive the milling device 42 to move vertically, but also drive the milling device 42 to move horizontally, so that the milling device 42 can perform vertical milling and horizontal milling on the battery cell 1 .
  • the milling device 42 may be disposed below the battery cell 1 or on one side in the horizontal direction, and the milling device 42 may mill the battery cell 1 from bottom to top or from one side in the horizontal direction.
  • the glue nail 126 can be used to insert the liquid injection hole 121 to seal the liquid injection hole 121, and then dry The gas cleans the area around the liquid injection hole 121 to blow off the electrolyte in the area around the liquid injection hole 121 . Then use the above-mentioned cleaning equipment 400 to mill the surface around the liquid injection hole 121, the surface around the liquid injection hole 121 exposes fresh metal that is not polluted by the electrolyte, and finally weld the sealing nail 15 on the fresh metal that is not polluted by the electrolyte.
  • the sealing nail 15 can be made of the same material as the end cover 12.
  • the sealing nail 15 and the end cover 12 are made of aluminum or aluminum alloy. become.
  • the milling cutter 421 can also be a commonly used small-diameter end mill, and the diameter of the end mill is slightly larger than that of the sealing nail 15 .
  • the end mill is the most commonly used milling cutter in milling equipment, and the end face of the end mill is provided with a cutting edge (ie, an end edge).
  • the milling cutter 421 is a formed milling cutter.
  • the milling cutter 421 (that is, the forming milling cutter) includes a first cutting edge 4212 and a second cutting edge 4211, the first cutting edge 4212 is located on the outer periphery of the end face of the milling cutter 421, and the first cutting edge 4212 mills the first surface to form a welding surface.
  • the second blade 4211 is located inside the first blade 4212 , the first blade 4212 and the second blade 4211 are parallel or approximately parallel to each other, and the second blade 4211 protrudes relative to the first blade 4212 .
  • the protruding height of the second blade 4211 relative to the first blade 4212 is equivalent to the thickness of the sealing nail 15 , if the thickness of the sealing nail 15 is relatively large, the protruding height of the second blade 4211 relative to the first blade 4212 also increases accordingly.
  • the height of the second cutting edge protruding toward the milling end surface relative to the first cutting edge 4212 is 0.3 mm to 1.2 mm.
  • the first blade 4212 is milled on the end cover 12 of the battery cell 1 to form the first milling surface 124
  • the second blade 4211 is milled on the end cover 12 of the battery cell 1 to form the first milling surface 124.
  • Two milling surfaces 123 are flat milling surfaces respectively, and the first milling surface 124 and the second milling surface 123 are parallel or approximately parallel to each other.
  • the first milling surface 124 is an annular milling surface
  • the second milling surface 123 is located inside the first milling surface 124, and the second milling surface 123 is lower than the first milling surface 124, and the second milling surface 123 is lower than the first milling surface 124
  • the depth is the same as the height of the second blade 4211 protruding from the first blade 4212 .
  • the third blade 4213 connects the first blade 4212 and the second blade 4211 , and the angle between the third blade 4213 and the second blade 4211 is 105° to 150°.
  • the first blade 4212 and the second blade 4211 are parallel or nearly parallel to each other, one end of the third blade 4213 is connected to the first blade 4212 , and the other end of the third blade 4213 is connected to the second blade 4211 .
  • the third cutting edge 4213 is milled on the end cover 12 of the battery cell 1 to form a third milling surface 125 , and the third milling surface 125 is located between the first milling surface 124 and the second milling surface 123 .
  • the formed third milling surface 125 has an angle of 105 to 150 degrees with the first milling surface 124 and the second milling surface 123.
  • the top of the third milling surface 125 is connected to the first milling surface 124
  • the bottom of the third milling surface 125 is connected to the second milling surface 123 .
  • the sealing nail 15 when the sealing nail 15 is welded, the bottom surface of the sealing nail 15 fits with the second milling surface 123, the side surface of the sealing nail 15 fits with the third milling surface 125, and the top surface of the sealing nail 15 fits with the second milling surface 123.
  • the first milling surface 124 is flush, and because the side of the sealing nail 15 and the third milling surface 125 are suitable slopes, it is convenient for the assembly of the sealing nail 15, avoiding the skewing of the sealing nail 15 during assembly, and can strengthen the sealing of the sealing nail 15 sex.
  • the first milling surface 124 is the welding surface welded with the sealing nail 15, a part of the weld 151 formed by welding the sealing nail 15 is located on the first milling surface 124, and the other part is located on the upper surface peripheral edge of the sealing nail 15, thereby sealingly connecting the sealing nail 15 and end cap 12.
  • the side surface of the sealing nail 15 is a slope that gradually inclines toward the inside from top to bottom.
  • the milling cutter also includes a third cutting edge 4213, and the third cutting edge 4213 is used for milling the end cap 12 so that an inclination matching the side surface of the sealing nail 15 is formed between the first milling surface 124 and the second milling surface 123.
  • the third milling surface 125 is a slope surface matched with the side surface of the sealing nail 15, which can facilitate the assembly of the sealing nail 15, avoid the skewing of the sealing nail 15 during assembly, and be more conducive to the connection between the sealing nail 15 and the second milling surface.
  • the surface 123 is bonded to enhance the sealing effect of the sealing nail 15.
  • an avoidance hole 4214 is also provided in the middle of the end face of the milling cutter 421 .
  • the diameter of the escape hole 4214 should be greater than or equal to the aperture of the liquid injection hole 121, and the escape hole 4214 is formed by inwardly indenting the middle of the end face of the milling cutter 421, so that the middle of the end face of the milling cutter 421 is lower than the second cutting edge 4211.
  • the avoidance hole 4214 can prevent the milling cutter 421 from cutting the sealant nail in the injection hole 121 during milling.
  • the milling device 42 mills the first surface to a thickness of 0.1 mm-0.5 mm.
  • the milling device 42 mills the first surface 120 to a thickness of 500 um.
  • the thickness of the first surface 120 milled by the milling device 42 is formed by milling the end cover 12 by the milling cutter 421
  • the depth of the first milling surface 124 is the distance from the first milling surface 124 to the upper surface of the end cover 12 .
  • the cleaning device 400 is used for milling the surrounding surface of the liquid injection hole 121 of the battery cell 1, in order to prevent the external appearance or internal structure of the battery cell 1 from being damaged by the excessive pressure exerted on the battery cell 1 by the milling device 42 during milling.
  • the cleaning device further includes a pressure detection device and a control device. Wherein, it is used to detect the milling pressure exerted by the milling cutter 421 on the battery cell 1 .
  • the pressure detection device includes but not limited to a pressure sensor, the pressure sensor is connected to the milling cutter 421, the milling pressure exerted by the milling cutter 421 on the battery cell 1 can act on the pressure sensor through the reaction force, so the pressure sensor can detect the milling cutter 421 Milling pressure applied to battery cell 1.
  • the control device controls the feed movement of the milling cutter according to the milling pressure, so that the milling pressure of the milling cutter is kept within the set pressure range.
  • the cleaning device 400 in order to timely remove the impurities produced by the milling of the outer peripheral surface of the liquid injection hole 121 of the battery cell 1 , the cleaning device 400 further includes an air blowing nozzle 425 , and the air blowing nozzle 425 faces toward the battery cell.
  • the blowing nozzle 425 can be connected to a dry compressed air source through a pipeline and a control valve.
  • the compressed gas leads to the blowing nozzle 425 through the pipeline and blows to the first surface 120, thereby cleaning the end cover 12.
  • Impurities attached to the first surface 120 of the In this embodiment, the air blowing nozzle 425 can not only remove impurities on the first surface 120, but also can be used to cool down the end cover 12 during the milling operation, thereby preventing the temperature of the end cover 12 from suddenly increasing due to high-speed milling. deformation due to increase.
  • the dust cover 424 is connected with a negative pressure suction pipe.
  • the dust removal cover 424 is sleeved on the outer periphery of the milling cutter 421, and the orientation of the dust removal cover 424 is the same as that of the milling cutter 421, both facing the first surface 120 of the end cover 12, and the other end of the dust removal cover 424 is connected with a negative pressure suction tube, so that the dust cover 424 generates suction to collect debris generated by the milling operation by suction, thereby further preventing the debris from adhering to the battery cell 1 .
  • the dust removal cover 424 can also be fixed on one side of the milling cutter 421 by a fixing member, so as to collect debris generated by milling when the milling cutter 421 is working; of course, the dust removal cover 424 can also be arranged on other Feasible location with the ability to collect debris.
  • the cleaning equipment 400 is also provided with a visual positioning device 423, which is used to position the liquid injection hole when the milling cutter 421 is milling. 121.
  • the visual positioning device 423 includes a camera and an image processor. The camera is arranged on the frame 41, and the frame 41 drives the camera and the milling cutter 421 to move synchronously. The image captured by the camera is used to determine whether the milling cutter 421 is aligned with the liquid injection hole 121 or around the liquid injection hole 121 .
  • the visual positioning device 423 can accurately and reliably obtain the positioning position of the liquid injection hole 121 to be milled.
  • the visual positioning device 423 obtains the positioning parameter at a relatively fast speed. Therefore, the milling precision of the product and the subsequent welding efficiency are improved accordingly. At the same time, the visual positioning device 423 does not require personnel to operate, and when the seal nail 15 is milled and welded, it can prevent the tooling at the milling and welding position from posing a threat to the personal safety of the operator, thereby improving the safety in the milling and welding process.
  • frame 41 is also provided with mounting plate 422 , the camera, the milling cutter 421 , the air blowing nozzle 425 and the dust removal cover 424 of the visual positioning device 423 are installed on the mounting plate 422 respectively.
  • the mounting plate 422 may be in the shape of a disc, and the mounting plate 422 may be fixed on the frame 41 or rotatably mounted on the frame 41 through a rotating shaft.
  • the cleaning device 400 is further provided with a tool setting instrument 426 .
  • the tool setting instrument 426 can be installed on the side of the milling station (that is, the position where the battery cell 1 to be processed is clamped), and the tool setting instrument 426 can include a high-precision switch and a hard alloy tetrahedron probe.
  • the tetrahedron probe is used to contact the tool, and through the flexible support rod installed under it, the force is transmitted to the high-precision switch; the on and off signals sent by the high-precision switch are transmitted to the CNC system to determine the direction of the tool. Identification, operation, compensation, access, etc.
  • the cleaning device 400 can realize automatic tool setting through the tool setting instrument 426 , which greatly shortens the tool setting time and improves the processing efficiency and processing accuracy of the cleaning device 400 .
  • FIG. 9 another embodiment of the present application provides a battery cell processing method.
  • the cleaning equipment of the embodiment of the present application is described above, and the battery cell processing method of the embodiment of the present application will be described below, and the parts that are not described in detail can be referred to the foregoing embodiments.
  • the battery cell processing method includes the following steps:
  • step S1 the battery cell 1 has completed the assembly of the electrode assembly 13 inside the battery cell 1 and the packaging of the end cap 12 , but the filling of the electrolyte has not been completed.
  • the electrolyte injection device can be used to align the injection hole 121 to inject the electrolyte into the battery cell 1 .
  • the glue nail 126 can be used to seal the injection hole 121 to prevent the electrolyte from overflowing when the battery cell 1 is transported or dumped, and to prevent milling metal chips from falling into the battery cell 1 .
  • the area around the liquid injection hole 121 is also cleaned with dry gas to blow off the electrolyte in the area around the liquid injection hole 121 .
  • step S2 the surface around the liquid injection hole 121 of the battery cell 1 (that is, the first surface 120) can be milled by the milling device 42 of the cleaning equipment 400 in each of the above-mentioned embodiments, and the surface around the liquid injection hole 121 can be milled by milling.
  • the material on the surface is removed to a certain thickness, exposing the welding surface of fresh metal that is not polluted by the electrolyte.
  • step S3 the sealing nail 15 is welded on the welding surface of the fresh metal which is not polluted by the electrolyte, and the liquid injection hole 121 is sealed by the sealing nail 15 .
  • the material on the surface around the liquid injection hole 121 is removed to a certain thickness by the milling device 42 to expose fresh metal that is not polluted by the electrolyte, and the fresh metal that is not polluted by the electrolyte is used for welding the welding surface of the sealing nail 15 , thereby improving the welding quality of the sealing nail 15 of the sealing hole.
  • step S2 in order to effectively remove impurities such as electrolyte around the liquid injection hole 121 , the milling device 42 mills the first surface 120 to a thickness of 0.1 mm-0.5 mm.
  • the milling device 42 mills the first surface 120 to a thickness of 500 um.
  • the shape of the sealing nail 15 is a truncated cone
  • the milling device 42 mills the first surface 120 to form a slope surface matching the side of the truncated cone, and the welding surface is located on the outer periphery of the slope surface.
  • the first surface 120 around the liquid injection hole 121 can be milled by the forming milling cutter having the first cutting edge 4212, the second cutting edge 4211 and the third cutting edge 4213 in the above-mentioned embodiment, so that there is a first surface 120 around the liquid injection hole 121.
  • the third milling surface 125 has an included angle of 105 to 150 degrees with the first milling surface 124 and the second milling surface 123, the top of the third milling surface 125 is connected with the first milling surface 124, and the bottom of the third milling surface 125 It is connected to the second milling surface 123 .
  • the bottom surface of the sealing nail 15 fits with the second milling surface 123, the side surface of the sealing nail 15 fits with the third milling surface 125, and the top surface of the sealing nail 15 fits with the second milling surface 123.
  • the first milling surface 124 is flush, and because the side of the sealing nail 15 is a compatible inclined plane with the third milling surface 125, it is convenient for the sealing nail 15 to assemble, avoiding the skewing of the sealing nail 15 during assembly, and more conducive to the sealing nail 15 and the third milling surface 125.
  • the second milling surface 123 fits together to enhance the sealing effect of the sealing nail 15 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

一种清洁设备，用于在电池单体（1）注入电解液步骤后以及密封钉（15）焊接步骤之前，对电池单体（1）的第一表面（120）进行清洁，包括：机架（41）和铣削装置（42），铣削装置（42）设置于机架（41）上，机架（41）驱动铣削装置（42）移动，铣削装置（42）包括铣刀（421），铣刀（421）用于铣削第一表面（120），以清洁第一表面（120），使第一表面（120）形成用于焊接密封钉（15）的焊接面。通过清洁设备可彻底清洁注液孔周围的电解液残留，彻底解决电解液等污染物对密封钉焊接的影响，保证密封钉的焊接质量。还提供了一种电池单体加工方法、一种电池单体以及一种用电装置。

Description

清洁设备、电池单体、用电装置及电池单体加工方法
相关申请的交叉引用
本申请要求享有于2021年06月15日提交的名称为“清洁设备、电池单体、用电装置及电池单体加工方法”的中国专利申请202110659374.4的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请涉及电池技术领域，特别是涉及一种用于清洁电池单体注液孔的清洁设备以及电池单体加工方法。
背景技术
电池单体在封装时需要通过注液孔向电池壳体内加注电解液，然后在注液孔内塞入胶钉，并在注液孔上焊接密封钉，以实现注液孔的密封。然而现有技术中密封钉焊接时容易产生针孔爆点等焊接缺陷，从而影响注液孔的密封效果。
发明内容
为此，需要提供一种清洁设备用于解决现有技术中电池单体的注液孔密封钉焊接质量不佳的技术问题。
为实现上述目的，本申请提供了一种清洁设备，用于在电池单体注入电解液步骤后以及密封钉焊接步骤之前，对所述电池单体的第一表面进行清洁，所述第一表面环绕所述注液孔，所述清洁设备包括：
机架；和铣削装置，所述铣削装置设置于所述机架上，所述机架驱动所述铣削装置移动，所述铣削装置包括铣刀，所述铣刀用于铣削所述第一表面，以清洁所述第一表面，使所述第一表面形成用于焊接所述密封钉的焊接面。
上述技术方案中，通过铣刀对环绕所述注液孔的所述第一表面进行铣削，使所述第一表面形成用于焊接所述密封钉的焊接面，通过所述清洁设备可彻底清洁注液孔周围的电解液残留，彻底解决电解液等污染物对密封钉焊接的影响，保证密封钉的焊接质量。
进一步的，所述铣刀包括：
第一刀刃，所述第一刀刃位于所述铣刀的端面的外周，所述第一刀刃铣削所述第一表面形成所述焊接面；以及
第二刀刃，所述第二刀刃位于所述第一刀刃的内侧，所述第二刀刃相对所述第一刀刃凸出。
上述技术方案中，所述铣刀具有第一刀刃和第二刀刃，因此通过一次铣削即可形成所述焊接面和低于所述焊接面的第二铣削面，大大提高铣刀的铣削效率和精度。
进一步的，所述第二刀刃相对所述第一刀刃向所述铣削端面凸出的高度为0.3mm至1.2mm。
上述技术方案中，所述第二刀刃相对所述第一刀刃向所述铣削端面凸出的高度与密封钉的厚度相当，从而使所述密封钉焊接时，所述密封钉的上表面与所述焊接面齐平。
进一步的，所述铣刀还包括：
第三刀刃，所述第三刀刃连接所述第一刀刃和所述第二刀刃，所述第三刀刃与所述第二刀刃的夹角为105度至150度。
上述技术方案中，所述铣刀的第三刀刃与第二刀刃铣削所形成的第二铣削面和第三铣削面的夹角为105度至150度，该角度范围与圆锥台密封钉的下表面与侧面的夹角相当，从而便于密封钉装配，避免密封钉歪斜，且可增强密封钉的密封效果。进一步的，所述端面的中部设置有避让所述注液孔的避让孔。
上述技术方案中，所述避让孔可防止所述铣刀在铣削时切割到所述注液孔内的胶钉。
进一步的，所述清洁设备还包括压力检测装置和控制装置，所述压力检测装置用于检测所述铣刀的铣削压力，所述控制装置根据所述铣削压力控制所述铣刀进给运动，使所述铣刀的铣削压力保持在设定的压力范围内。
上述技术方案中，通过所述压力检测装置和所述控制装置可检测和控制所述铣刀的铣削压力，从而避免铣削压力过大损坏电池单体，同时又能够保证所述铣刀的铣削效率。
进一步的，所述清洁设备还包括吹气嘴，所述吹气嘴向所述第一表面吹气，以清除所述铣削产生的杂质。
上述技术方案中，所述吹气嘴可及时清除所述铣削产生的杂质，避免杂质导致电池单体短路，并且能够带走铣削时产生的温度，防止注液孔表面温度过高。
进一步的，所述清洁设备还包括除尘罩，所述除尘罩设置于所述铣刀的上方，所述除尘罩连接有负压抽吸管。
上述技术方案中，除尘罩可及时吸走铣削产生的杂质，避免杂质导致电池单体短路。
进一步的，所述清洁设备还包括视觉定位装置，所述视觉定位装置设置于所述机架上，所述机架带动所述视觉定位装置和所述铣刀同步移动，所述视觉定位装置用于定位所述注液孔。
上述技术方案中，通过视觉定位装置可自动对所述注液孔进行定位，可提高铣削效率和精度。
为解决上述技术问题本申请还提供了另一技术方案：一种电池单体加工方法，包括以下步骤：
通过注液孔向电池单体内加注电解液；
通过铣削装置铣削环绕所述注液孔的第一表面，使所述第一表面形成焊接面；
在所述焊接面焊接密封钉以密封所述注液孔。
上述技术方案中，通过铣刀对环绕所述注液孔的所述第一表面进行铣削，使所述第一表面形成用于焊接所述密封钉的焊接面，通过所述清洁设备可彻底清洁注液孔周围的电解液残留，彻底解决电解液等污染物对密封钉焊接的影响，保证密封钉的焊接质量。
进一步的，所述铣削装置铣削所述第一表面的厚度为0.1mm-0.5mm。
上述技术方案中，由于电解液会侵蚀所述注液孔的第一表面，所述铣削装置铣削所述第一表面的厚度为0.1mm-0.5mm可有效清除第一表面上的杂质，从而保证密封钉的焊接质量。
进一步的，所述密封钉的形状为圆锥台；
所述铣削装置铣削所述第一表面还形成与所述圆锥台侧面相适配的斜坡面，所述焊接面位于所述斜坡面外周。
上述技术方案中，铣削所形成的斜坡面与所述圆锥台侧面相适配，从而便于密封钉装配，避免密封钉歪斜，且可增强密封钉的密封效果。为解决上述技术问题本申请还提供了以下两个技术方案：
一种电池单体，所述电池单体由以上任一项技术方案所述的电池单体加工方法制成。
一种用电装置，所述用电装置包括以上技术方案所述的电池单体，所述电池用于提供电能。
区别于现有技术，上述技术方案提供了一种清洁设备，该清洁设备用于在电池单体注入电解液步骤后以及密封钉焊接步骤之前，对所述电池单体的第一表面进行清洁，所述清洁设备包括：机架和铣削装置，所述铣削装置设置于所述机架上，所述机架驱动所述铣削装置移动，所述铣削装置包括铣刀，所述铣刀用于铣削所述第一表面，以清洁所述第一表面，使所述第一表面形成用于焊接所述密封钉的焊接面。因此通过所述清洁设备可彻底清洁注液孔周围的电解液残留，彻底解决电解液等污染物对密封钉焊接的影响，保证密封钉的焊接质量。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对本申请实施例中所需要使用的附图作简单地介绍，显而易见地，下面所描述的附图仅仅是本申请的一些实施例，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，还可以根据附图获得其他的附图。
图1为本申请一实施例公开的一种车辆的局部结构示意图；
图2为本申请一实施例公开的一种电池包的结构示意图；
图3为本申请一实施例公开的一种电池单体的结构示意图；
图4为本申请一实施例公开的清洁设备的结构示意图；
图5为本申请一实施例公开的铣刀沿轴线方向的剖面图；
图6为本申请一实施例公开的铣削后所述第一表面后的俯视图；
图7为本申请一实施例公开的铣削后注液孔沿厚度方向的剖面图；
图8为本申请一实施例公开的密封钉焊接后的端盖沿厚度方向的剖面图；
图9为本申请一实施例公开的电池单体加工方法的流程图；
在附图中，附图并未按照实际的比例绘制。
附图标记说明：100、控制器；200、电池包；300、电机；21、电池模组；22、上壳体；23、下壳体；1、电池单体；11、电池壳体；12、端盖；13、电极组件；14、电极端子；15、密封钉；151、焊缝；120、第一表面；121、注液孔；122、防爆阀；123、第二铣削面；124、第一铣削面；125、第三铣削面；126、胶钉；41、机架；42、铣削装置；421、铣刀；422、安装盘；423、视觉定位装置；424、除尘罩；425、吹气嘴；426、对刀仪；4211、第二刀刃；4212、第一刀刃；4213、第三刀刃；4214、避让孔。
具体实施方式
下面结合附图和实施例对本申请的实施方式作进一步详细描述。以下实施例的详细描述和附图用于示例性地说明本申请的原理，但不能用来限制本申请的范围，即本申请不限于所描述的实施例。在本申请的描述中，需要说明的是，除非另有说明，“多个”的含义是两个以上；术语“上”、“下”、“左”、“右”、“内”、“外”等指示的方位或位置关系仅是为了便于描述本申请和简化描述，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的限制。此外，术语“第一”、“第二”等仅用于描述目的，而不能理解为指示或暗示相对重要性。“垂直”并不是严格意义上的垂直，而是在误差允许范围之内。“平行”并不是严格意义上的平行，而是在误差允许范围之内。
在本申请的描述中，还需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可视具体情况理解上述术语在本申请中的具体含义。
现有技术中，电池单体的封装主要工序流程包括：电解液加注→注液孔压胶钉→滴加溶剂→机械擦拭→吹干燥气→激光清洗→密封钉焊接，其中，滴加溶剂、机械擦拭、吹干燥气和激光清洗工艺是用于清除残留在注液孔周围的电解液结晶等污物。在现有技术中注液孔的密封钉焊接时容易产生针孔、爆点等焊接缺陷。申请人在注意到现有电池单体的注液孔密封钉焊接质量不佳之后，对密封钉焊接过程和结果进行了研究，进而发现了注液孔周围的电解液残留，尤其是液态电解液等污物，是导致密封钉焊接时容易产生针孔、爆点等焊接缺陷的主要原因。并且申请人还发现现有技术中通过激光清洗注液孔表面会产生大量细微铝粉，存在自燃爆炸的风险，因此对除尘设备的防爆功能要求高。并且激光清洗还存在清洗面粗糙的缺点，影响密封钉装配密封 性；以及激光清洗对定位精度要求高，定位不准易导致激光直接照射到电池单体内部的安全风险。
为了提高注液孔处密封钉焊接的质量，申请人提供了一种清洁设备，该清洁设备用于在电池单体注入电解液步骤后以及密封钉焊接步骤之前，对环绕电池单体的注液孔的第一表面进行清洁，从而清除注液孔周围的电解液残留，尤其是液态电解液等污物，从而彻底解决电解液等污染物对密封钉焊接的影响，保证注液孔密封钉的焊接质量。
基于申请人发现的上述问题，申请人对电池单体的清洁设备进行改进，下面对本申请实施例进行进一步描述。
本申请实施例提供了一种使用电池单体1作为电源的用电装置。该用电装置可以但不仅限于为车辆、船舶或飞行器等。参见图1所示，电池包200可以用于为车辆供电，电池包内设置有多个电池单体1。车辆可以为燃油汽车、燃气汽车或新能源汽车。新能源汽车可以是纯电动汽车、混合动力汽车或增程式汽车等。在本申请一实施例中，车辆可以包括电机300、控制器100以及电池包200。控制器100用来控制电池包200为电机300供电。电机300通过传动机构与车轮连接，从而驱动车辆行进。电池包200可以作为车辆的驱动电源，替代或部分地替代燃油或天然气为车辆提供驱动动力。在一个示例中，在车辆的底部或车头或车尾可以设置电池包200。电池包200可以用于为车辆供电。
参见图2所示，本申请实施例提供了一种电池包200，多个电池单体1可连接形成电池模组21，多个电池模组21可连接形成电池包200。电池包200包括箱体，箱体的形状不受限制。箱体可为框状箱体、盘状箱体或盒状箱体等。示例性地，箱体包括下壳体23和与下壳体23盖合的上壳体22。上壳体22和下壳体23盖合后形成容纳部，上壳体22和下壳体23盖合后可通过螺栓等紧固件锁紧固定。如图2所示，电池包200内设置有多个电池模组21，该电池模组21设置于箱体的容纳部内。电池模组21包括多个电池单体1，多个电池单体1可以通过串联或并联或混联的方式电连接。
在一些实施例中，为了满足不同使用情况下的电力需求，电池包200可以包括多个电池单体1，其中，多个电池单体1之间可以串联或并联或混联，混联是指既有串联又有并联的连接方式。也就是说，多个电池单体1可以直接设置于箱体的容纳部内以组成电池包200。
参阅图3所示，为本申请实施例提供了电池单体电，电池单体1包括电池壳体11、端盖12以及设置于电池壳体11内的电极组件13。本申请实施例的电池壳体11为长方体结构或其他结构。电池壳体11具有容纳电极组件13和电解液的内部空间以及与内部空间相连通的开口，端盖12与开口相适配。电池壳体11和端盖12可以由例如铝、铝合金或塑料等材料制造。端盖12上设置有注液孔121、防爆阀122以及两个电极端子14，其中一个电极端子14为正极端子，另一个电极端子14为负极端子。第一表面120为端盖12的上表面，即端盖12远离电池壳体11的一侧的表面。
本申请实施例的电极组件13可通过将第一极片、第二极片以及隔膜一同堆叠或卷绕形成，其中，隔膜是介于第一极片和第二极片之间的绝缘体。在本实施例中， 示例性地以第一极片为正极片，第二极片为负极片进行说明。正极片和负极片均包括涂覆区和未涂覆区。正极片活性物质被涂覆在正极片的涂覆区上，而负极片活性物质被涂覆在负极片的涂覆区上。在涂覆区上，活性物质被涂覆在由金属薄板形成的集流体上，在未涂覆区上没有涂覆活性物质。正极片的未涂覆区形成正极耳，而负极片的未涂覆区形成负极耳。电极组件13包括主体部、正极耳以及负极耳，正极耳和负极耳分别从主体部的一个端部上延伸而成，正极耳通过导电连接件与其中一个电极端子14连接，负极耳通过另一导电连接件与另一电极端子14连接。其中，正极耳和负极耳可以位于主体部的一端，也可以分别位于主体部的两端。
如图4所示，为本申请实施例公开的清洁设备的结构示意图，清洁设备400用于在电池单体1注入电解液步骤后以及密封钉15焊接步骤之前，对电池单体1的端盖12上的注液孔121外围表面(即第一表面120)进行清洁，从而清除注液孔周围的电解液残留，尤其是液态电解液等污物，从而提高注液孔的密封钉15的焊接质量。
清洁装置400包括机架41和铣削装置42，铣削装置42设置于机架41上。
机架41可以包括电池单体固定装置，电池单体固定装置可以对待加工的电池单体1提供一定的支撑和固定作用，从而进一步防止在铣削操作进行过程中，电池单体1的位置出现偏移。电池单体固定装置可以为金属等硬质材料支撑的平板状结构以及用于夹紧电池单体1的夹持结构。
铣削装置42设置于机架41上，机架41上设置有电机、液压油缸、气缸等驱动装置，机架41通过该驱动装置可驱动铣削装置42移动，从而对电池单体1进行铣削。铣削装置42包括铣刀421，铣刀421可由钨钢或硬质合金材料制成，铣刀421连接有电机等动力机构，该动力机构驱动铣刀421轴向旋转，从而产生铣削刀对电池单体1的注液孔121的外周表面(即上第一表面120)进行铣削，从而清洁注液孔121的外周表面。通过铣削可将注液孔121周围表面的材料去除一定厚度，露出未被电解液污染的新鲜金属，该未被电解液污染的新鲜金属作为焊接密封钉15的焊接面，从而提高密封孔的密封钉15焊接质量。其中，铣削装置42可设置于待加工的电池单体1的上方，驱动装置驱动铣削装置42向下移动对电池单体1进行铣削。在一些实施方式中，驱动装置除了可驱动铣削装置42竖直移动，还可驱动铣削装置42水平向移动，使铣削装置42可对电池单体1进行竖直方向的铣削和水平方向铣削。在另一些实施方式中，铣削装置42可设置于电池单体1的下方或水平方向的一侧，铣削装置42可从下向上或从水平方向的一侧靠近电池单体1进行铣削。
在一实施方式中，通过电池单体1的注液孔121向电池单体1内部加注电解液后，可先使用胶钉126塞入注液孔121以密封注液孔121，然后用干燥气体清洁注液孔121周围区域，以吹除注液孔121周围区域的电解液。然后再使用上述清洁设备400对注液孔121周围表面进行铣削，注液孔121周围表面露出未被电解液污染的新鲜金属，最后在该未被电解液污染的新鲜金属上焊接密封钉15，从而提高焊接表面的清洁度，减少针孔、爆点等焊接缺陷，提高密封钉15的焊接质量。为了保证密封钉15与端盖12的焊接强度，密封钉15可以选用与端盖12相同的材质制成，例如在一实施方式中，密封钉15和端盖12均是采用铝或铝合金制成。
在一些实施方式中，铣刀421也可以选用常用的小直径的立铣刀，立铣刀的直径略大于密封钉15的直径。立铣刀是铣削设备中最常用的铣刀，立铣刀的端面设置有刀刃(即端刃)。
如图5所示，在一实施方式中，为了提高铣削装置42的加工效率，以及加工后更便于密封钉15焊接，铣刀421选用成型铣刀。铣刀421(即成型铣刀)包括有第一刀刃4212和第二刀刃4211，第一刀刃4212位于铣刀421的端面的外周，第一刀刃4212铣削第一表面形成焊接面。第二刀刃4211位于第一刀刃4212的内侧，第一刀刃4212与第二刀刃4211相互平行或近似平行，第二刀刃4211相对第一刀刃4212凸出。其中，第二刀刃4211相对第一刀刃4212凸出的高度与密封钉15的厚度相当，若密封钉15的厚度较大，第二刀刃4211相对第一刀刃4212凸出的高度也相应的增加。在一些实施方式中，第二刀刃相对第一刀刃4212向铣削端面凸出的高度为0.3mm至1.2mm。
如图6和图7所示，第一刀刃4212在电池单体1的端盖12上切铣形成第一铣削面124，第二刀刃4211在电池单体1的端盖12上切铣形成第二铣削面123。其中，第一铣削面124和第二铣削面123分别为平整的铣削面，第一铣削面124和第二铣削面123相互平行或所近似平行。第一铣削面124为环形铣削面，第二铣削面123位于第一铣削面124的内侧，且第二铣削面123低于第一铣削面124，第二铣削面123低于第一铣削面124的深度与第二刀刃4211凸出第一刀刃4212的高度相同。
如图5所示，第三刀刃4213连接第一刀刃4212和第二刀刃4211，第三刀刃4213与第二刀刃4211的夹角为105度至150度。其中，第一刀刃4212和第二刀刃4211相互平行或近似平行，第三刀刃4213的一端与第一刀刃4212相连，第三刀刃4213的另一端与第二刀刃4211相连。如图6和图7所示，第三刀刃4213在电池单体1的端盖12上铣削形成第三铣削面125，第三铣削面125位于第一铣削面124和第二铣削面123之间。由于第三刀刃4213与第二刀刃4211的夹角为105度至150度，因此所形成的第三铣削面125为与第一铣削面124以及第二铣削面123存在105度至150度的夹角，第三铣削面125的顶部与第一铣削面124连接，第三铣削面125的底部与第二铣削面123连接。如图8所示，在密封钉15焊接时，密封钉15的底面与第二铣削面123相贴合，密封钉15的侧面与第三铣削面125相贴合，密封钉15的顶面与第一铣削面124齐平，由于密封钉15的侧面与第三铣削面125为相适配的斜面，因此便于密封钉15装配，避免密封钉15装配时歪斜，并且可增强密封钉15的密封性。
如图8所示，密封钉15焊接时，密封钉15放置于第二铣削面123上，密封钉15的底面与第二铣削面123相贴合，密封钉15的上表面的外周边缘靠近第一铣削面124。第一铣削面124为与密封钉15焊接的焊接面，密封钉15焊接形成的焊缝151一部分位于第一铣削面124上，另一部分位于密封钉15的上表面外周边缘，从而密封连接密封钉15和端盖12。
如图8所示，在一实施方式中，密封钉15的侧面为由上至下渐向内侧倾斜的斜面。如图5所示，铣刀还包括第三刀刃4213，第三刀刃4213用于铣削端盖12使第一铣削面124与第二铣削面123之间形成与密封钉15的侧面相匹配的倾斜的第三铣削 面125。在该实施方式中，第三铣削面125为与密封钉15的侧面相匹配的斜坡面，可便于密封钉15装配，避免装配时密封钉15歪斜，并且更有利于密封钉15与第二铣削面123贴合，增强密封钉15的密封效果。
如图5至图7所示，在一实施方式中，为了避让注液孔121，在铣刀421的端面中部还设置有避让孔4214。其中，避让孔4214的孔径应大于或等于注液孔121的孔径，避让孔4214由铣刀421的端面中部向内凹陷形成，使铣刀421的端面中部低于第二刀刃4211。避让孔4214可防止铣刀421在铣削时切割到注液孔121内的密封胶钉。
在一些实施方式中，为了有效清除注液孔121周围的电解液杂质，铣削装置42铣削第一表面的厚度为0.1mm-0.5mm。可选的，铣削装置42铣削第一表面120的厚度为500um。当铣削装置42的铣刀421选用以上实施方式中具有第一刀刃4212和第二刀刃4211的成型铣刀时，铣削装置42铣削第一表面120的厚度即为铣刀421铣削端盖12形成的第一铣削面124的深度，即第一铣削面124至端盖12上表面的距离。
由于清洁设备400是用于铣削电池单体1的注液孔121的周围表面，为了防止铣削装置42铣削时对电池单体1施加的压力过大而破坏电池单体1的外观或内部结构，在一实施方式中，清洁设备还包括压力检测装置和控制装置。其中，用于检测铣刀421施加在电池单体1上的铣削压力。压力检测装置包括但不限于压力传感器，压力传感器与铣刀421连接，铣刀421施加在电池单体1上的铣削压力可通过反作用力作用在压力传感器上，因此通过该压力传感器可检测铣刀421施加在电池单体1上的铣削压力。
控制装置根据铣削压力控制铣刀进给运动，使铣刀的铣削压力保持在设定的压力范围内。
由于在铣削过程中端盖12上会产生金属碎屑等杂质，这些杂质若残留在电池单体1表面会存在短路等安全隐患。因此，如图4所示，在一些实施方式中，为了及时清除电池单体1的注液孔121外周表面铣削产生的杂质，清洁设备400还包括吹气嘴425，吹气嘴425朝向电池单体1的第一表面120，并向第一表面120吹气，从而清除铣削产生的杂质。具体的，吹气嘴425可通过管道以及控制阀连接至干燥的压缩气源，当控制阀导通时压缩气通过管道通向吹气嘴425并向吹第一表面120，从而清除端盖12的第一表面120上附着的杂质。在该实施方式中，该吹气嘴425除了可清除第一表面120上的杂质，还可用于在铣削操作过程中对端盖12进行降温工作，从而防止因高速铣削造成端盖12的温度骤增而发生变形。
为了进一步防止因铣削加工所产生的碎屑粘附于电池单体1上，可选的，如图4所示，清洁设备400还包括除尘罩424，除尘罩424设置于铣刀421的上方，除尘罩424连接有负压抽吸管。除尘罩424套设在铣刀421的外周，并且除尘罩424的朝向与铣刀421的朝向相同，均是朝向端盖12的第一表面120，除尘罩424的另一端连接有负压抽吸管，从而使除尘罩424产生吸力，以将因进行铣削操作所产生的碎屑通过抽吸的方式收集起来，从而进一步防止碎屑粘附于电池单体1上。在另一些实施方式中，除尘罩424也可以通过固定件等固定在铣刀421一侧，以在铣刀421工作时将铣削产生的碎屑收集起来；当然，除尘罩424也可以设置在其他可行的位置，使其具备 收集碎屑的能力。
在一实施方式中，为了提高清洁设备400的自动化程度，以及密封钉15的焊接精度，清洁设备400还设置有视觉定位装置423，视觉定位装置423用于在铣刀421铣削时定位注液孔121。视觉定位装置423包括有摄像头以及图像处理器，摄像头设置于机架41上，机架41带动摄像头和铣刀421同步移动，摄像头用于拍摄铣刀421所指向空间的图像，图像处理器用于分析摄像头所拍摄的图像，并判断铣刀421是否对准注液孔121或注液孔121周围。视觉定位装置423可以精确、可靠地得到待铣削的注液孔121的定位位置，另外，视觉定位装置423获取该定位参数的速度较快。因此，该使得产品的铣削精度以及后续的焊接效率随之提升。同时，通过视觉定位装置423无需人员操作，并且在密封钉15铣削和焊接时可防止铣削和焊接位置处的工装对操作人员的人身安全造成威胁，从而提高了铣削和焊接过程中的安全性。
如图4所示，在一实施方式中，为了方便在机架41上安装视觉定位装置423的摄像头、铣刀421、吹气嘴425和除尘罩424，机架41上还设置有安装盘422，视觉定位装置423的摄像头、铣刀421、吹气嘴425和除尘罩424分别安装于安装盘422上。安装盘422可以圆盘状结构，安装盘422可固定于机架41上或可通过转轴可旋转的安装于机架41上。
由于在铣削加工过程中，铣刀装夹和对刀占用了许多时间，从而导致加工效率不高，并且也影响铣削加工精度。如图4所示，在一实施方式中，为了提高清洁设备400的加工效率和铣削精度，清洁设备400还设置有对刀仪426。对刀仪426可安装于铣削工位(即待加工的电池单体1所装夹的位置)的侧旁，对刀仪426可包括一个高精度开关和一个硬质合金四面体探针。四面体探针是用于与刀具进行接触，并通过安装在其下的挠性支撑杆，把力传至高精度开关；开高精度关所发出的通、断信号传输到数控系统中进行刀具方向识别、运算、补偿、存取等。清洁设备400通过对刀仪426可实现自动对刀，大大缩短了对刀时间，提高了清洁设备400的加工效率和加工精度。
请参阅图9，本申请另一实施方式提供了一种电池单体加工方法。上文描述了本申请实施例的清洁设备，下面将描述本申请实施例的电池单体加工方法，其中未详细描述的部分可参见前述各实施例。该电池单体加工方法包括以下步骤：
S1、通过注液孔向电池单体内加注电解液；
S2、通过铣削装置铣削环绕注液孔的第一表面120，使第一表面120形成焊接面；
S3、在焊接面焊接密封钉密封注液孔。
其中，在步骤S1中，电池单体1已完成电池单体1的内部的电极组件13装配以及端盖12封装，但未完成电解液加注。在内加注电解液时，可使用电解液注液装置对准注液孔121向电池单体1内部加注电解液。在电解液注液完成后可使用胶钉126密封注液孔121，以防止电池单体1搬运或倾倒时电解液溢出，以及避免铣削金属屑掉入电池单体1内部。在一些实施方式中，在胶钉126密封注液孔121胶钉后，还通过干燥气体清洁注液孔121周围区域，以吹除注液孔121周围区域的电解液。
在步骤S2中，可通过上述各实施方式的清洁设备400的铣削装置42对电池单体1的注液孔121周围表面(即第一表面120)进行铣削，通过铣削可将注液孔121周围表面的材料去除一定厚度，露出未被电解液污染的新鲜金属的焊接面。
在步骤S3中，在该未被电解液污染的新鲜金属的焊接面上焊接密封钉15，通过密封钉15密封注液孔121。
在该实施方式中通过铣削装置42将注液孔121周围表面的材料去除一定厚度，露出未被电解液污染的新鲜金属，该未被电解液污染的新鲜金属用于焊接密封钉15的焊接面，从而提高密封孔的密封钉15焊接质量。
在一实施方式中，在步骤S2中，为了有效清除注液孔121周围的电解液等杂质，铣削装置42铣削第一表面120的厚度为0.1mm-0.5mm。可选的，铣削装置42铣削第一表面120的厚度为500um。
如图8所示，在一实施方式中，密封钉15的形状为圆锥台；
铣削装置42铣削第一表面120还形成与圆锥台侧面相适配的斜坡面，焊接面位于斜坡面外周。其中，可通过上述实施方式中具有第一刀刃4212、第二刀刃4211和第三刀刃4213的成型铣刀对注液孔121周围的第一表面120进行铣削，使注液孔121周围具有第一铣削面124、第二铣削面123和第三铣削面125，其中，第三铣削面125即为圆锥台状的密封钉15的侧面相适配的斜坡面。第三铣削面125为与第一铣削面124以及第二铣削面123存在105度至150度的夹角，第三铣削面125的顶部与第一铣削面124连接，第三铣削面125的底部与第二铣削面123连接。如图8所示，在密封钉15焊接时，密封钉15的底面与第二铣削面123相贴合，密封钉15的侧面与第三铣削面125相贴合，密封钉15的顶面与第一铣削面124齐平，由于密封钉15的侧面与第三铣削面125为相适配的斜面，因此便于密封钉15装配，避免装配时密封钉15歪斜，并且更有利于密封钉15与第二铣削面123贴合，增强密封钉15的密封效果。
需要说明的是，尽管在本文中已经对上述各实施例进行了描述，但并非因此限制本申请的专利保护范围。因此，基于本申请的创新理念，对本文实施例进行的变更和修改，或利用本申请说明书及附图内容所作的等效结构或等效流程变换，直接或间接地将以上技术方案运用在其他相关的技术领域，均包括在本申请的专利保护范围之内。

Claims (14)

  1. 一种清洁设备，用于在电池单体注入电解液步骤后以及密封钉焊接步骤之前，对所述电池单体的第一表面进行清洁，所述第一表面环绕注液孔，所述清洁设备包括：
    机架；和
    铣削装置，所述铣削装置设置于所述机架上，所述机架驱动所述铣削装置移动，所述铣削装置包括铣刀，所述铣刀用于铣削所述第一表面，以清洁所述第一表面，使所述第一表面形成用于焊接所述密封钉的焊接面。
  2. 根据权利要求1所述的清洁设备，其中，所述铣刀包括：
    第一刀刃，所述第一刀刃位于所述铣刀的端面的外周，所述第一刀刃铣削所述第一表面形成所述焊接面；以及
    第二刀刃，所述第二刀刃位于所述第一刀刃的内侧，所述第二刀刃相对所述第一刀刃凸出。
  3. 根据权利要求2所述的清洁设备，其中，所述第二刀刃相对所述第一刀刃向所述铣削端面凸出的高度为0.3mm至1.2mm。
  4. 根据权利要求2或3所述的清洁设备，其中，所述铣刀还包括：
    第三刀刃，所述第三刀刃连接所述第一刀刃和所述第二刀刃，所述第三刀刃与所述第二刀刃的夹角为105度至150度。
  5. 根据权利要求2-4任一项所述的清洁设备，其中，所述端面的中部设置有避让所述注液孔的避让孔。
  6. 根据权利要求1-5任一项所述的清洁设备，其中，所述清洁设备还包括压力检测装置和控制装置，所述压力检测装置用于检测所述铣刀的铣削压力，所述控制装置根据所述铣削压力控制所述铣刀进给运动，使所述铣刀的铣削压力保持在设定的压力范围内。
  7. 根据权利要求1-6任一项所述的清洁设备，其中，所述清洁设备还包括吹气嘴，所述吹气嘴向所述第一表面吹气，以清除所述铣削产生的杂质。
  8. 根据权利要求1-7任一项所述的清洁设备，其中，所述清洁设备还包括除尘罩，所述除尘罩设置于所述铣刀的上方，所述除尘罩连接有负压抽吸管。
  9. 根据权利要求1-8任一项所述的清洁设备，其中，所述清洁设备还包括视觉定位装置，所述视觉定位装置设置于所述机架上，所述机架带动所述视觉定位装置和所述铣刀同步移动，所述视觉定位装置用于定位所述注液孔。
  10. 一种电池单体加工方法，包括以下步骤：
    通过注液孔向电池单体内加注电解液；
    通过铣削装置铣削环绕所述注液孔的第一表面，使所述第一表面形成焊接面；
    在所述焊接面焊接密封钉密封所述注液孔。
  11. 根据权利要求10所述的电池单体加工方法，其中，所述铣削装置铣削所述第一表面的厚度为0.1mm-0.5mm。
  12. 根据权利要求10或11所述的电池单体加工方法，其中，所述密封钉的形状为圆锥台；
    所述铣削装置铣削所述第一表面还形成与所述圆锥台侧面相适配的斜坡面，所述焊接面位于所述斜坡面的外周。
  13. 一种电池单体，所述电池单体由权利要求10-12任一项所述的电池单体加工方法制成。
  14. 一种用电装置，所述用电装置包括权利要求13所述的电池单体，所述电池用于提供电能。
PCT/CN2022/082765 2021-06-15 2022-03-24 清洁设备、电池单体、用电装置及电池单体加工方法 WO2022262351A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110659374.4 2021-06-15
CN202110659374.4A CN115475986B (zh) 2021-06-15 2021-06-15 清洁设备、电池单体、用电装置及电池单体加工方法

Publications (1)

Publication Number Publication Date
WO2022262351A1 true WO2022262351A1 (zh) 2022-12-22

Family

ID=84419840

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/082765 WO2022262351A1 (zh) 2021-06-15 2022-03-24 清洁设备、电池单体、用电装置及电池单体加工方法

Country Status (2)

Country Link
CN (1) CN115475986B (zh)
WO (1) WO2022262351A1 (zh)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117148450A (zh) * 2023-10-30 2023-12-01 宁德时代新能源科技股份有限公司 注液孔检测工装、检测设备及检测方法
CN117655579A (zh) * 2024-01-31 2024-03-08 宁德时代新能源科技股份有限公司 电池密封钉焊接系统及其使用方法、电池密封钉焊接方法
WO2024140872A1 (zh) * 2022-12-28 2024-07-04 华为技术有限公司 一种盖板组件、电池模组、电池包和电子设备
WO2024148693A1 (zh) * 2023-01-09 2024-07-18 宁德时代新能源科技股份有限公司 端盖组件、电池单体及用电设备

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117399834B (zh) * 2023-12-13 2024-03-08 四川惠科达仪表制造有限公司 一种具有定位功能的法兰钢管总成智能焊接装置
CN117600541B (zh) * 2024-01-19 2024-06-18 宁德时代新能源科技股份有限公司 铣削装置、铣削设备以及电池生产系统
CN118513936A (zh) * 2024-07-24 2024-08-20 宁德时代新能源科技股份有限公司 电池模组焊后处理装置以及方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008041548A (ja) * 2006-08-09 2008-02-21 Sanyo Electric Co Ltd 非水電解液二次電池
CN204809306U (zh) * 2015-07-15 2015-11-25 宁德时代新能源科技有限公司 二次电池的注液孔焊接组件
CN107331804A (zh) * 2017-06-29 2017-11-07 大族激光科技产业集团股份有限公司 一种动力电池、其密封钉及其焊接方法
CN108714747A (zh) * 2018-08-01 2018-10-30 江苏逸飞激光设备有限公司 一种密封钉焊接检测系统
CN109037582A (zh) * 2018-08-01 2018-12-18 武汉逸飞激光设备有限公司 一种密封钉装配方法
CN110071341A (zh) * 2019-04-09 2019-07-30 深圳市深清新型材料有限公司 一种退役锂离子电池的修复方法
CN110828765A (zh) * 2019-11-14 2020-02-21 深圳市普兰德储能技术有限公司 注液装置及注液方法
CN111037098A (zh) * 2019-12-27 2020-04-21 芜湖天弋能源科技有限公司 一种修复动力电池密封钉激光焊接多种焊缝缺陷的方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5135715B2 (ja) * 2006-05-31 2013-02-06 トヨタ自動車株式会社 密閉型電池及びその製造方法
CN106400663B (zh) * 2015-07-27 2019-02-26 中联重科股份有限公司 用于铣刨机刀头的零点定位方法及装置
CN206325798U (zh) * 2016-12-23 2017-07-14 青州金青云新材料有限公司 一种涂布机上的吹气削边装置
CN206405481U (zh) * 2017-01-09 2017-08-15 珠海市铭阳切削工具有限公司 钨钢成型铣刀
CN206976470U (zh) * 2017-06-28 2018-02-06 中航锂电（江苏）有限公司 一种新型电池注液孔及盖板表面擦拭机构
CN207240898U (zh) * 2017-08-17 2018-04-17 上海亚大塑料制品有限公司 一种带除静电功能的塑料热熔对接焊机
CN208690318U (zh) * 2018-09-26 2019-04-02 宁德时代新能源科技股份有限公司 一种电池单体的顶盖组件及电池单体
CN210280820U (zh) * 2019-06-13 2020-04-10 苏州金巨源五金机电有限公司 一种加工非中心多台阶立柱的套削刀具
CN212392309U (zh) * 2020-07-21 2021-01-22 宁德时代新能源科技股份有限公司 端盖组件、电池单体、电池以及用电装置
CN112259846B (zh) * 2020-12-01 2021-03-30 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) 一种动力电池密封结构及其焊接方法
CN112658365A (zh) * 2020-12-15 2021-04-16 浙江三门太和大型锻造有限公司 一种模具钢生产用切割装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008041548A (ja) * 2006-08-09 2008-02-21 Sanyo Electric Co Ltd 非水電解液二次電池
CN204809306U (zh) * 2015-07-15 2015-11-25 宁德时代新能源科技有限公司 二次电池的注液孔焊接组件
CN107331804A (zh) * 2017-06-29 2017-11-07 大族激光科技产业集团股份有限公司 一种动力电池、其密封钉及其焊接方法
CN108714747A (zh) * 2018-08-01 2018-10-30 江苏逸飞激光设备有限公司 一种密封钉焊接检测系统
CN109037582A (zh) * 2018-08-01 2018-12-18 武汉逸飞激光设备有限公司 一种密封钉装配方法
CN110071341A (zh) * 2019-04-09 2019-07-30 深圳市深清新型材料有限公司 一种退役锂离子电池的修复方法
CN110828765A (zh) * 2019-11-14 2020-02-21 深圳市普兰德储能技术有限公司 注液装置及注液方法
CN111037098A (zh) * 2019-12-27 2020-04-21 芜湖天弋能源科技有限公司 一种修复动力电池密封钉激光焊接多种焊缝缺陷的方法

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024140872A1 (zh) * 2022-12-28 2024-07-04 华为技术有限公司 一种盖板组件、电池模组、电池包和电子设备
WO2024148693A1 (zh) * 2023-01-09 2024-07-18 宁德时代新能源科技股份有限公司 端盖组件、电池单体及用电设备
CN117148450A (zh) * 2023-10-30 2023-12-01 宁德时代新能源科技股份有限公司 注液孔检测工装、检测设备及检测方法
CN117148450B (zh) * 2023-10-30 2024-04-02 宁德时代新能源科技股份有限公司 注液孔检测工装、检测设备及检测方法
CN117655579A (zh) * 2024-01-31 2024-03-08 宁德时代新能源科技股份有限公司 电池密封钉焊接系统及其使用方法、电池密封钉焊接方法

Also Published As

Publication number Publication date
CN115475986A (zh) 2022-12-16
CN115475986B (zh) 2023-11-17

Similar Documents

Publication Publication Date Title
WO2022262351A1 (zh) 清洁设备、电池单体、用电装置及电池单体加工方法
US11843089B2 (en) Robot comprising robot arm
US20160133894A1 (en) Electrochemical cell
US10921294B2 (en) System for non-destructively inspecting and determining sealing of aluminum pouch by using ultrasonic waves
EP3926742B1 (en) Top cover assembly, secondary battery, battery module and device
CN110057684B (zh) 基于原位观察实验热电力电耦合样品台
EP2479816A1 (en) Secondary battery and method of manufacturing the same
KR20200118992A (ko) 이차전지셀의 디가스챔버 및 이를 포함하는 디가스시스템
CN112537490A (zh) 一种全自动电芯包装线
US20240250397A1 (en) Battery cover plate assembly, battery cell, battery, and power consuming device
JP5494726B2 (ja) 双極型電池の製造方法および製造装置
EP4415156A1 (en) End cover assembly, energy-storage apparatus, and electricity-consumption device
CN212191704U (zh) 焊接设备
KR100995474B1 (ko) 리튬 이차전지의 접속리드 용접장치
KR20220040808A (ko) 이차전지 제조용 디게싱장치
WO2024021064A1 (zh) 电池以及用电装置
EP4108371A1 (en) Micro-cleaning device for welding jig
WO2023050183A1 (zh) 电池的顶盖组件、电池和用电装置
CN108574060A (zh) 一种用于聚合物锂离子电池电芯的封装方法
KR100601507B1 (ko) 이차 전지
US10840568B2 (en) Apparatus and method for detecting water
CN216262235U (zh) 一种除尘装置及电池生产设备
CN116706472A (zh) 顶盖清洗方法、装置、电池单体、电池以及用电装置
CN219086183U (zh) 泄压机构、外壳组件、电池单体、电池及用电设备
CN215732116U (zh) 锂电池注液孔保护片撕片装置

Legal Events

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

Ref document number: 22823842

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 22823842

Country of ref document: EP

Kind code of ref document: A1