WO2024040381A1 - 喷涂遮蔽方法及喷涂遮蔽装置 - Google Patents

喷涂遮蔽方法及喷涂遮蔽装置 Download PDF

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Publication number
WO2024040381A1
WO2024040381A1 PCT/CN2022/113910 CN2022113910W WO2024040381A1 WO 2024040381 A1 WO2024040381 A1 WO 2024040381A1 CN 2022113910 W CN2022113910 W CN 2022113910W WO 2024040381 A1 WO2024040381 A1 WO 2024040381A1
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WO
WIPO (PCT)
Prior art keywords
cover
battery case
opening
spray
shielding
Prior art date
Application number
PCT/CN2022/113910
Other languages
English (en)
French (fr)
Inventor
魏则友
叶金标
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 PCT/CN2022/113910 priority Critical patent/WO2024040381A1/zh
Publication of WO2024040381A1 publication Critical patent/WO2024040381A1/zh

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/16Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
    • B05B12/20Masking elements, i.e. elements defining uncoated areas on an object to be coated
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/16Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
    • B05B12/20Masking elements, i.e. elements defining uncoated areas on an object to be coated
    • B05B12/26Masking elements, i.e. elements defining uncoated areas on an object to be coated for masking cavities
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00Processes for applying liquids or other fluent materials
    • B05D1/32Processes for applying liquids or other fluent materials using means for protecting parts of a surface not to be coated, e.g. using stencils, resists

Definitions

  • the present application relates to the technical field of battery production, and in particular to a spray masking method and a spray masking device.
  • 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 spray masking method and a spray masking device.
  • the spray masking method can effectively prevent contamination of the non-sprayed area of the battery case during the battery case spraying process, and at the same time effectively improve the masking accuracy of the white area of the battery case, thereby Effectively improve battery production quality.
  • the present application provides a spraying and masking method for masking the opening and the blank area of the battery case.
  • the outer peripheral surface of the battery case near one end of the opening forms the blank area.
  • the spraying and masking method includes: applying the first covering cover the opening; surround the end of the battery housing close to the opening with the second covering member so that the second covering member covers the blank area.
  • the first cover is placed on the opening of the battery case to shield the inside of the battery case, thereby effectively preventing the spray material from entering the inside of the battery case through the opening;
  • the second cover is placed around the opening of the battery case. on an end of the battery case close to the opening, and cover the blank area of the battery case to shield the blank area of the battery case, and use the first cover part and the second cover part to protect the interior and the left part of the battery case.
  • the white areas are separately masked to effectively prevent the non-sprayed areas of the battery case from being contaminated, and effectively ensure the dimensional accuracy of the reserved white areas of the battery case, thereby effectively improving the production quality of the battery case and improving the quality of battery production.
  • surrounding the end of the battery case close to the opening with the second cover so that the second cover covers the blank area includes: making the second cover simultaneously cover the outer peripheral surface of the first cover At least part of the battery case and the blank area are connected to the battery case and the first cover through the second cover.
  • the second cover covers the blank area and at least part of the outer peripheral surface of the first cover, and the battery case and the first cover are connected through the second cover.
  • the second cover not only plays the role of shielding the blank area, but also serves to connect the first cover and the battery case, effectively ensuring the connection stability of the first cover and the battery case, thereby further ensuring the second cover
  • the masking accuracy of the blank area is conducive to further improving the dimensional accuracy of the blank area and ensuring the production quality of the battery casing.
  • the second cover is wrapped around the end of the battery case close to the opening, the connection between the first cover and the battery case and the shielding of the blank area are simultaneously completed, effectively improving the shielding efficiency of the battery case.
  • the second covering member is an adhesive tape. Surrounding the end of the battery case close to the opening so that the second covering member covers the blank area includes: making the adhesive tape cover the first covering at the same time. At least part of the outer circumferential surface of the component and the blank area are connected to the battery case and the first covering component through adhesive tape.
  • the first covering member uses adhesive tape, and the adhesive tape can adhere to the battery case and cover the blank area of the battery case to shield the blank area of the battery case. Because the tape can be more firmly bonded to the battery case, the position of the tape on the battery case is not easily changed during the spraying process, thus effectively ensuring the accuracy of masking the white space of the battery case, and thus effectively Ensure the dimensional accuracy of the blank area of the battery case, and effectively improve the production quality of the battery by improving the production quality of the battery case. Moreover, when the tape is wrapped around the end of the battery case close to the opening, the tape not only functions to cover the blank area, but also fixes the first cover member to the battery case through the tape, effectively ensuring that the first cover member and Battery case connection stability.
  • the first cover and the battery cell are bonded with tape, which has strong operability.
  • the tape bonding method can effectively reduce the first cost of the first cover.
  • the cover causes the risk of scratches, deformation and other damage to the battery case, thereby effectively ensuring the production quality of the battery case and thereby improving the production quality of the battery.
  • the width of the tape is L
  • the width of the connection area between the tape and the first cover is L1, which satisfies 0.5 ⁇ L1/L ⁇ 0.7.
  • the width of the tape covering the first covering member if the width of the tape covering the first covering member is too wide, it will affect the masking width of the tape on the white area of the battery case, and will increase the tape's separation from the white area of the battery case, resulting in white space.
  • the risk of masking failure inside the body the width of the connection area between the tape and the first cover accounts for 50% to 70% of the total width of the tape, which can effectively ensure the masking size requirements and stability of the blank area. At the same time, it effectively ensures the stability of the connection between the first cover member and the battery case.
  • the width of the blank area is L2, satisfying 4mm ⁇ L2 ⁇ 6.25mm.
  • the blank area of the battery case is reserved to facilitate the welding of the battery case and the cover or other cover parts. If the width of the blank area is too small, it will affect the welding of the battery case and the cover or other fittings. Regarding the welding stability of the cover, if the width of the blank area is too large, excessive spray residue areas will be formed on the outer peripheral surface of the battery case, affecting the insulation performance of the battery case.
  • the width of the blank area is designed to be 4mm. to 6.25mm, which can effectively ensure sufficient welding surface while ensuring the insulation performance of the battery case, effectively improving the quality of battery production.
  • the first cover includes a body and a protrusion, the body includes a first surface facing the opening, and the protrusion protrudes from the first surface; covering the first cover on the opening includes: Cover the main body on the opening, make the protruding part extend into the battery case through the opening, and make the protruding part and the battery case have a clearance fit.
  • the first cover includes a body and a protruding part.
  • the body covers the opening to shield the opening of the battery case.
  • the protruding part extends into the battery case.
  • the protruding part is arranged to protect the body and the battery case.
  • the body plays a two-way limiting role to ensure the relative position accuracy of the first cover and the battery case, improve the position accuracy of the first cover covering the opening of the battery case, and before the first cover is positioned with the case, This can effectively reduce the risk of the first covering member breaking away from the opening; and the protruding portion plays a guiding role in covering the opening with the first covering member.
  • the first covering member can cover the opening, effectively
  • the working precision of the first cover member in covering the opening is improved, which is beneficial to improving the production efficiency and quality of the battery case.
  • the clearance between the protruding portion and the inner wall of the battery case is beneficial to ensure the convenience of disassembly and assembly of the first cover and the battery case, and prevents the protruding portion from causing scratches or deformation to the battery case, thereby effectively ensuring that the battery case is body production quality.
  • the spray masking method further includes: covering the outer periphery of the first cover. Set up a shield.
  • a shielding cover is provided on the periphery of the first cover.
  • the shielding cover can further reduce the pollution inside the battery case and the blank area, and further improve the battery production quality; on the other hand, the shielding cover can
  • the first cover plays a shielding and protective role, reducing the contamination of the first cover by spray materials, effectively ensuring the repeated service life of the first cover, and at the same time, preventing spray materials from gathering on or on the first cover. and the battery case, the disassembly and assembly accuracy of the first cover is effectively ensured, and the risk of deformation of the battery case caused by size changes of the first cover is effectively reduced, thereby effectively ensuring battery production quality.
  • the present application provides a spray-coating shielding device, including: a cover used to cover the opening of the battery case; and a shield configured to cover the outer periphery of the cover after the cover covers the opening.
  • the spray shielding device includes a cover and a shield.
  • the cover can shield the opening of the battery case to prevent spray materials from entering the battery case through the opening and affecting the quality of the battery case;
  • the shield It can shield the cover, the gap between the cover and the battery case, etc., thereby further reducing the risk of internal contamination of the battery case and improving battery production quality; at the same time, the shielding cover can protect the cover. Reduce the contamination of the cover by spraying materials, effectively ensuring the repeated service life of the cover.
  • the cover includes a body and a protruding portion.
  • the body is used to cover the opening.
  • the body includes a first surface facing the opening.
  • the protruding portion protrudes from the first surface.
  • the protruding portion is used to extend through the opening. into the battery case.
  • the cover includes a main body and a protruding part.
  • the main body covers the opening to shield the opening of the battery case.
  • the protruding part extends into the battery case.
  • the protruding part is provided to protect the main body and the battery case. It has a two-way limiting function to ensure the relative position accuracy of the cover and the battery case, improve the position accuracy of the cover covering the opening of the battery case, and effectively reduce the risk of the cover breaking away from the opening before the cover is positioned with the case. risk; and, the protrusion plays a guiding role in covering the opening with the cover. After the protrusion is inserted into the opening, the cover can cover the opening, which effectively improves the accuracy of the cover covering the opening and is conducive to improving the battery life. Housing production efficiency and quality.
  • the protrusion is clearance-fitted with the inner wall of the battery case.
  • the clearance between the protruding part and the inner wall of the battery case is beneficial to ensure the convenience of disassembly and assembly of the cover and the battery case, and prevents the protruding part from causing scratches or deformation of the battery case, thereby effectively Ensure the production quality of battery casings.
  • the shielding cover is provided with a first magnetic component, and the cover is provided with a second magnetic component corresponding to the first magnetic component.
  • the shielding cover and the cover pass through the first magnetic component and the second magnetic component. Magnetic pieces can be detachably connected.
  • the shielding cover and the cover are detachably connected through the first magnetic piece and the second magnetic piece, which facilitates the disassembly and assembly of the shielding cover and the cover.
  • the shielding cover is connected to the cover through magnetic attraction and is located on the On the cover, it can effectively ensure the stability of the shielding effect of the shield on the cover and the battery case; and the shield is connected to the cover through magnetic attraction, which can avoid excessive damage to the cover during the process of disassembly and assembly of the shield. Apply force to effectively ensure the coverage and shielding accuracy of the cover; and after the battery case is sprayed, the shield can be easily removed to avoid interference with the separation operation of the cover and the battery case.
  • the shielding cover includes a top wall and a side wall, the side wall is surrounding the top wall, the side wall is used to cover the outer peripheral surface of the cover, and the top wall is used to cover the surface of the cover away from the opening.
  • the first magnetic piece is arranged on the top wall.
  • the first magnetic attraction piece is arranged on the top wall of the shielding cover so that the shielding cover and the cover are as close as possible to effectively ensure that the cover is included in the shielding range of the shielding cover as much as possible, thereby effectively ensuring that the shielding cover is The masking effect of the covering.
  • the spray shielding device further includes a connecting rod, the shielding cover is provided with a mounting hole, and one end of the connecting rod passes through the mounting hole and is connected to the first magnetic member.
  • the connecting rod is connected to the first magnetic piece installed in the shielding cover, so that the connecting rod and the shielding cover are connected into an integrated structure, which facilitates the disassembly and assembly operation of the shielding cover and facilitates the connection with the shielding cover through the connecting rod.
  • the cover and battery housing are connected to a spray hanger or other spray positioning device.
  • the first magnetic component has a threaded through hole, and one end of the connecting rod passes through the threaded through hole and is threadedly connected to the first magnetic component.
  • the connecting rod is threadedly connected to the first magnetic piece, which facilitates disassembly and assembly and effectively ensures the connection stability of the connecting rod.
  • the connecting rod is a hollow rod
  • the cover is provided with a through hole
  • the inner cavity of the connecting rod communicates with the inner cavity of the battery case through the through hole.
  • the inner cavity of the connecting rod and the inner cavity of the battery case are connected through the through hole on the cover.
  • the design of the through hole of the cover and the hollow structure of the connecting rod can control the internal spraying and curing process of the battery case.
  • the thermal expansion and contraction gas generated in the process is discharged in time, thereby effectively ensuring the structural stability of the battery case during the spraying process, which is conducive to further improving the production yield of the battery case, and thereby improving the production quality of the battery.
  • both the connecting rod and the cover are conductive parts, and the connecting rod and the cover are electrically conductive.
  • the connecting rod and the cover are both conductive parts and are electrically connected, so that when the battery case is sprayed using the electrostatic spraying process, the charge attached to the battery case can be conducted away from the battery case in a timely manner, effectively ensuring that the battery Safety of shell spraying and spraying stability.
  • the spray shielding device further includes: a sleeve sleeved on the connecting rod.
  • a casing is set on the connecting rod, and the casing plays a role in spraying and shielding the connecting rod to prevent spray materials from contaminating the connecting rod and affecting the service life of the connecting rod.
  • the material of the casing and shielding cover is Teflon.
  • the material of the casing and shielding cover is Teflon.
  • the insulating spray material of the battery case has poor adhesion to Teflon, and the spraying material sprayed on the casing and shielding cover is easy to clean. , thus facilitating the reuse of the casing and shielding cover; on the other hand, if the casing and shielding cover are made of Teflon, the casing and shielding cover have better insulation properties, thus effectively ensuring the safety of the battery case spraying operation .
  • Figure 1 is a simple structural diagram of a conventional battery cell
  • Figure 2 is a schematic flow chart of a spray masking method provided by some embodiments of the present application.
  • Figure 3 is an exploded schematic diagram of covering the opening of the battery case with the first cover member according to some embodiments of the present application;
  • Figure 4 is a schematic structural diagram of covering the opening of the battery case with a first cover member according to some embodiments of the present application
  • Figure 5 is a schematic three-dimensional structural diagram of the second cover surrounding the end of the battery case close to the opening provided by some embodiments of the present application;
  • Figure 6 is a front cross-sectional view of the second cover surrounding the end of the battery case close to the opening provided by some embodiments of the present application;
  • Figure 7 is an exploded schematic diagram of the shielding cover being provided on the outer periphery of the first cover member according to some embodiments of the present application;
  • Figure 8 is a schematic structural diagram of a spray shielding device provided by some embodiments of the present application.
  • Figure 9 is a schematic structural diagram of a spray shielding device provided by some embodiments of the present application.
  • Figure 10 is an exploded view of the structure of the spray shielding device and the battery case provided by some embodiments of the present application;
  • Figure 11 is a partial front cross-sectional view of the cooperation between the spray shielding device and the battery case provided by some embodiments of the present application;
  • FIG. 12 is a partial enlarged view of part A shown in FIG. 11 .
  • Marking description 100-spray shielding device; 10-first cover; 11-body; 111-first surface; 112-through hole; 12-protrusion; 20-shielding cover; 21-top wall; 211-installation Hole; 22-side wall; 30-first magnetic piece; 31-threaded through hole; 40-second magnetic piece; 50-connecting rod; 60-casing; 70-base; 71-base plate; 72- Limiting plate; 73-connecting plate; 74-avoidance opening; 75-limiting slot; 80-limiting block; 200-second cover; 300-battery cell; 310-battery case; 311-opening; 312 -Blank area; 320-cover; 330-electrode assembly.
  • 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 case 310 mentioned in the embodiment of the present application is the component structure of the battery cell 300.
  • the battery cell 300 includes a battery case 310, a cover 320, an electrode assembly 330 and an electrolyte.
  • the battery case 310 has an opening 311. , used to install the electrode assembly 330, electrolyte and other components into the battery case 310.
  • the electrode assembly 330 is accommodated in the battery case 310.
  • the cover 320 covers the opening 311 of the battery case 310.
  • the cover 320 is connected to the battery.
  • the housings 310 together define a sealed space.
  • the blank area 312 mentioned in the embodiment of this application refers to the blank area left on the outer peripheral surface of the battery case 310 near the opening 311 that is not sprayed or surface treated. Generally, the blank area 312 can be used to form a welding area between the battery case 310 and the cover 320 .
  • the spray masking mentioned in the embodiment of this application refers to the non-spraying area (the interior of the battery case 310 and the blank area) when partially spraying the target part (the target part is the battery case 310 in the embodiment of this application). 312) Masking is performed to limit contamination of non-spraying areas by spraying materials.
  • insulating the surface of the battery case is an important process to avoid insulation failure between batteries.
  • a spraying process is used to form an insulating layer on the surface of the battery case.
  • the inventor found that when spraying the battery case, the interior of the battery case and the white space outside the battery case are often polluted.
  • the applicant proposed a spray masking method after research, which is used to cover the opening and white space of the battery case. It mainly includes: A covering member covers the opening; a second covering member is placed around an end of the battery housing close to the opening, so that the second covering member covers the blank area.
  • the first cover is placed on the opening of the battery case to shield the inside of the battery case, thereby effectively preventing the spray material from entering the inside of the battery case through the opening;
  • the second cover is placed around the opening of the battery case. on an end of the battery case close to the opening, and cover the blank area of the battery case to shield the blank area of the battery case, and use the first cover part and the second cover part to protect the interior and the left part of the battery case.
  • the white areas are separately masked to effectively prevent the non-sprayed areas of the battery case from being contaminated, and effectively ensure the dimensional accuracy of the reserved white areas of the battery case, thereby effectively improving the production quality of the battery case and improving the quality of battery production.
  • the spray masking method and spray masking device disclosed in the embodiments of the present application can be used not only for the spray coating process of battery casings, but also for the spray coating process of various casings such as solid or liquid food and chemical supplies.
  • the following embodiments take the spray coating masking of the battery case as an example.
  • Figure 2 is a schematic flow chart of a spray masking method provided by some embodiments of the present application
  • Figure 3 is a method of covering the first cover on the battery case provided by some embodiments of the present application.
  • An exploded schematic view of the opening of the battery case
  • Figure 4 is a schematic structural view of the first cover covering the opening of the battery case provided by some embodiments of the present application
  • Figure 5 is a schematic view of the second cover surrounding the opening of the battery case provided by some embodiments of the present application.
  • Figure 6 is a front cross-sectional view of the second cover surrounding the end of the battery case close to the opening provided by some embodiments of the present application.
  • Some embodiments of the present application provide a spray masking method for masking the opening 311 and the blank area 312 of the battery case 310.
  • the outer peripheral surface of the case near one end of the opening 311 forms the blank area 312.
  • the spray masking method includes:
  • the battery case 310 is a structure of the battery cell 300 used to accommodate the electrode assembly 330 and other components.
  • the battery case 310 can be a hollow structure with an opening 311 at one end, or can have openings 311 at opposite ends. hollow structure.
  • the battery housing 310 may be in various shapes, such as cylinder, rectangular parallelepiped, etc.
  • the blank area 312 refers to a blank area reserved on the outer peripheral surface of the battery case 310 that does not need to be sprayed.
  • the first cover 10 is used to cover the opening 311 of the battery unit 300 to shield the inside of the battery case 310 and restrict the spray material from entering the inside of the battery case 310 through the opening 311 of the battery case 310 .
  • the shape of the first cover 10 can be adapted to the shape of the battery case 310.
  • the battery case 310 has a rectangular parallelepiped structure, and the first cover 10 can have a rectangular shape.
  • the battery case 310 has a cylindrical structure.
  • the first cover 10 may be circular, etc.
  • the shape of the first cover 10 and the shape of the battery case 310 may not match.
  • the battery case 310 has a rectangular parallelepiped structure
  • the first cover 10 has a circular shape, and so on.
  • the cross-sectional area of the first cover 10 can be larger than the opening area of the battery case 310 to ensure the adequacy of shielding.
  • the cross-sectional area of the first cover 10 can also be equal to the area and shape of the opening 311 of the battery case 310 The same, so as to fit with the opening 311 of the battery housing 310 .
  • Covering the opening 311 with the first cover 10 can be done manually or with mechanical equipment. Specifically, the position of the battery case 310 can be fixed and the first cover 10 can be dynamically moved to The opening 311 of the battery case 310 covers the opening 311; the position of the first cover 10 can also be fixed, the battery case 310 can be dynamically moved to the first cover 10, and the opening 311 of the battery case 310 can be pressed against the first cover 10. on a cover 10; of course, the battery case 310 and the first cover 10 can also be moved toward each other so that the first cover 10 covers the opening 311.
  • the first cover 10 When the first cover 10 covers the opening 311 , the first cover 10 may partially extend into the opening 311 of the battery case 310 . Of course, the first cover 10 may not extend into the opening 311 of the battery case 310 but only It covers the end of the battery case 310 with the opening 311 .
  • the first cover 10 can be bonded, clamped, magnetically connected, etc. Detachably connected to the battery housing 310 .
  • the second covering member 200 may adopt a sheet-like shielding structure with a certain structural strength, a flexible shielding film structure, or any conventional adhesive tape.
  • the second cover 200 surrounds the outer peripheral surface of the battery case 310 along the circumferential direction of the battery case 310.
  • the blank area 312 is completely covered by the second cover 200.
  • the boundary line between the second cover 200 and the battery case 310 is A boundary line of the blank area 312 may be formed.
  • the second cover 200 can be wrapped around the end of the battery case 310 close to the opening 311 manually or mechanically.
  • the battery case 310 can be kept in a stationary state, and the second cover 200 can be driven to move around the periphery of the battery case 310 and wrapped around the battery case 310; the battery case 310 can also be driven to rotate to move the second cover 200 to the battery case 310.
  • the cover 200 is wrapped around the battery case 310; of course, the battery case 310 can also be driven to rotate, and the second cover 200 can be driven to revolve around the battery case 310 in the opposite direction of its rotation, so as to more quickly rotate the battery case 310.
  • the second cover 200 is wrapped around the battery case 310 .
  • Covering the first cover 10 on the opening 311 of the battery case 310 can shield the inside of the battery case 310, thereby effectively preventing spray materials from entering the inside of the battery case 310 through the opening 311; placing the second cover 200 Surrounding the end of the battery case 310 close to the opening 311 and covering the blank area 312 of the battery case 310 to shield the blank area 312 of the battery case 310, through the first cover 10 and the second cover 200 respectively shields the interior of the battery case 310 and the blank area 312, thereby effectively preventing the non-sprayed area of the battery case 310 from being contaminated, and effectively ensuring the reserved dimensional accuracy of the blank area 312 of the battery case 310, and thereby
  • the battery production quality is improved by effectively improving the production quality of the battery case 310 .
  • the second cover 200 is surrounding the end of the battery housing 310 close to the opening 311 so that the second cover 200 covers the blank area 312 , including:
  • the second cover 200 is made to cover at least a part of the outer peripheral surface of the first cover 10 and the blank area 312 at the same time, and the battery case 310 and the first cover 10 are connected through the second cover 200 .
  • the second cover 200 when the second cover 200 is surrounding the end of the battery case 310 close to the opening 311, a part of the second cover 200 completely covers the blank area 312, and the other part of the second cover 200 exceeds the battery case.
  • the open end of the body 310 and covers the outer peripheral surface of the first cover 10.
  • the portion of the second cover 200 beyond the open end of the battery case 310 can completely cover the outer peripheral surface of the first cover 10, or can only cover Part of the outer peripheral surface of the first cover 10 .
  • the second cover 200 covers the blank area 312 of the battery case 310 and the outer peripheral surface of the first cover 10 at the same time.
  • the first cover 10 and the battery case 310 are connected through the second cover 200, so that the battery case
  • the relative positions of the body 310 and the first cover 10 are fixed.
  • the second cover 200 covers the blank area 312 and at least a part of the outer peripheral surface of the first cover 10 .
  • the battery case 310 and the first cover 10 are connected through the second cover 200 .
  • the second cover 200 not only plays the role of shielding the blank area 312, but also serves to connect the first cover 10 and the battery case 310, effectively ensuring the connection stability of the first cover 10 and the battery case 310, thereby Further ensuring the shielding accuracy of the blank area 312 by the second covering member 200 is conducive to further improving the dimensional accuracy of the blank area 312 and ensuring the production quality of the battery case 310 .
  • the second cover 200 is an adhesive tape.
  • the second cover 200 is wrapped around an end of the battery case 310 close to the opening, so that the second cover 200 covers the blank area 312 , including: applying the adhesive tape. At least a part of the outer peripheral surface of the first cover 10 and the blank area 312 are covered at the same time, and the battery case 310 and the first cover 10 are connected through adhesive tape.
  • the tape can be any conventional tape.
  • the tape can be high-temperature tape, such as Teflon high-temperature tape, PET high-temperature tape, etc.
  • Existing spraying auxiliary devices usually use a structure in which an inner support member and an outer shielding member cooperate to clamp and fix the battery case 310 and shield the interior of the battery case 310 and the blank area 312.
  • the relative position of the spraying auxiliary device and the battery case 310 is prone to deviation, and the shielding of the blank area 312 by the outer shielding member is easily offset, resulting in the masking failure of the blank area 312 and resulting in a large dimensional tolerance of the blank area 312 , unable to meet production accuracy requirements.
  • the outer shielding member is prone to deformation.
  • the adhesive tape can adhere to the battery case 310 and cover the blank area 312 of the battery case 310 to shield the blank area 312 of the battery case 310 . Because the tape can be more firmly bonded to the battery case 310, the position of the tape on the battery case 310 is not easily changed during the spraying process, thereby effectively ensuring that the blank area 312 of the battery case 310 is shielded.
  • the tape when the tape is wrapped around the end of the battery case 310 close to the opening, the tape not only functions to cover the blank area 312, but also fixes the first cover 10 to the battery case 310 through the tape, effectively ensuring that the first cover 10 is connected to the battery case 310 through the tape. Stability of the connection between the cover 10 and the battery case 310 . What’s more outstanding is that the tape is attached to the battery case 310 through adhesive force. After spraying, just remove the tape from the battery case 310. The removal and assembly of the tape will not easily cause scratches or even deformation to the battery case 310. , thereby further ensuring the production quality of the battery case 310.
  • the width of the tape is L
  • the width of the connection area between the tape and the first cover 10 is L1, which satisfies 0.5 ⁇ L1/L ⁇ 0.7.
  • the width direction of the tape and the width direction of the connection area both extend along the The plane where the opening 311 is located is not vertical.
  • L1/L can be any value between 0.5 and 0.7.
  • L1/L can be 0.5, 0.54, 0.6, 0.62, 0.68, 0.7, etc.
  • the value of L1/L can be any value between 0.6 and 0.7.
  • L1/L can be 0.6, 0.61, 0.62, 0.63, 0.65, 0.69, 0.7, etc.
  • the value of L1/L is 0.7.
  • the width of the tape covering the first covering member 10 is too wide, it will affect the covering width of the tape on the blank area 312 of the battery case 310 , and will increase the tape's separation from the blank area 312 of the battery case 310 and cause a blank.
  • the width of the connection area between the tape and the first cover 10 accounts for 50% to 70% of the total width of the tape, which can effectively ensure the shielding in the white space 312 While meeting the size requirements and the shielding stability of the blank area 312, the stability of the connection between the first cover 10 and the battery case 310 is effectively ensured.
  • the width of the blank area 312 is L2, satisfying 4mm ⁇ L2 ⁇ 6.25mm.
  • the width of the blank area 312 extends in a direction perpendicular to the opening surface of the battery case 310 (X direction).
  • the width L2 of the blank area 312 can be any value between 4mm and 6.25mm.
  • L2 can be 4mm, 4.5mm, 4.9mm, 5mm, 5.6mm, 6mm, 6.25mm, etc.
  • the width L2 of the blank area 312 may be 6.25 mm.
  • the blank area 312 of the battery case 310 can form a welding area between the battery case 310 and the cover 320. If the width of the blank area 312 is too small, it will affect the welding of the battery case 310 and the cover 320 or other covering parts. Stability, if the width of the blank area 312 is too large, excessive spray paint residue areas will be formed on the outer peripheral surface of the battery case 310, affecting the insulation performance of the battery case 310.
  • the width of the blank area 312 is designed to be between 4 mm and 6.25mm, it can effectively ensure sufficient welding surface while ensuring the insulation performance of the battery case 310, effectively improving the quality of battery production.
  • the first cover 10 includes a body 11 and a protruding portion 12.
  • the body 11 includes a first surface 111 facing the opening 311, and the protruding portion 12 protrudes from the first surface.
  • Covering the first cover 10 on the opening 311 includes: covering the body 11 on the opening 311, making the protruding part 12 extend into the battery case 310 through the opening 311, and connecting the protruding part 12 with the battery case. 310 clearance fit.
  • the shape of the protruding portion 12 can be the same as or different from the shape of the opening 311 of the battery case 310.
  • the shape of the opening 311 can be rectangular, and at the same time, the cross-section of the protruding portion 12 can be both rectangular.
  • the cross section of the protrusion 12 may also be circular.
  • the battery case 310 has a rectangular parallelepiped structure
  • the opening 311 has a rectangular shape
  • the protruding portion 12 has a columnar structure with a rectangular cross-section.
  • the main body 11 covers the opening 311 to shield the opening 311 of the battery case 310 .
  • the protruding portion 12 extends into the battery case 310 and plays a two-way limiting role for the main body 11 and the battery case 310 , ensuring that the first cover 10
  • the relative position accuracy with the battery case 310 improves the position accuracy of the first cover 10 covering the opening 311 of the battery case 310, and can effectively reduce the first cover before the first cover 10 is positioned with the battery case 310.
  • the protruding part 12 has a clearance fit with the inner wall of the battery case 310, which is beneficial to ensure the convenience of disassembly and assembly of the first covering part 10 and the battery case 310, and prevents the protruding part 12 from damaging the battery case. 310 causes scratches or deformation, thereby effectively ensuring the production quality of the battery case 310. According to some embodiments of the present application, please refer to FIG. 2 and FIG. 7 . FIG.
  • the spraying and masking method also includes:
  • S3 Cover the outer periphery of the first cover 10 with the shielding cover 20 .
  • the shielding cover 20 may be a hollow structure with an open end. After the first covering member 10 is covered in the opening 311 of the battery case 310 and the second covering member 200 is covered in the blank area 312, a cover is provided on the outer periphery of the first covering member 10. The opening end of the shielding cover 20 faces the first covering member 10 to cover the first covering member 10 in the shielding cover 20 .
  • the shape of the shielding cover 20 may be the same as or different from the shape of the battery case 310 .
  • the shape of the shielding cover 20 may be the same as or different from the shape of the battery case 310 .
  • the first cover 10 has a rectangular cross-section, and the shielding cover 20 It may be in the shape of a hollow hemisphere, or the first cover 10 may have a rectangular cross-section, and the shielding cover 20 may also be a hollow rectangular parallelepiped structure with one end open.
  • a shielding cover 20 is placed around the outer periphery of the first covering member 10.
  • the shielding cover 20 can cover the gap between the first covering member 10 and the battery case 310.
  • the gap between the second cover 200 and the battery case 310 further reduces the pollution inside the battery case 310 and the blank area 312, thereby further improving the battery production quality;
  • the shielding cover 20 can protect the first cover 10 plays a shielding and protective role, reducing the contamination of the first cover 10 by spraying materials, effectively ensuring the repeated service life of the first cover 10, and at the same time, it can prevent spraying materials from gathering on the first cover 10 or the first cover 10 10 and the battery case 310, the disassembly and assembly accuracy of the first cover 10 is effectively ensured, and the risk of deformation of the battery case 310 caused by size changes of the first cover 10 is effectively reduced, thereby effectively ensuring battery production quality.
  • Figure 8 is a schematic structural diagram of a spray shielding device provided by some embodiments of the present application; some embodiments of the present application provide a spray shielding device 100, and the spray shielding device 100 includes The first cover 10 and the shielding cover 20 , the first cover 10 is used to cover the opening 311 of the battery case 310 ; the shielding cover 20 is configured to cover the first cover 10 after the first cover 10 covers the opening 311 of the periphery.
  • the first cover 10 is used to cover the opening 311 of the battery cell 300 to shield the inside of the battery case 310 and restrict the spraying material from entering the inside of the battery case 310 through the opening 311 of the battery case 310 .
  • the shape of the first cover 10 can be adapted to the shape of the battery case 310.
  • the battery case 310 has a rectangular parallelepiped structure, and the first cover 10 can have a rectangular shape.
  • the battery case 310 has a cylindrical structure.
  • the first cover 10 may be circular, etc.
  • the shape of the first cover 10 and the shape of the battery case 310 may not match.
  • the battery case 310 has a rectangular parallelepiped structure
  • the first cover 10 has a circular shape, and so on.
  • the cross-sectional area of the first cover 10 can be larger than the opening area of the battery case 310 to ensure adequate shielding.
  • the cross-sectional area of the first cover 10 can also be equal to the opening area of the battery case 310 and have the same shape. , to fit with the opening 311 of the battery housing 310 .
  • the shielding cover 20 can be a hollow structure with an open end.
  • the shape of the opening end of the shielding cover 20 can be the same as or different from the shape of the first cover 10 . It can be understood that the opening surface area of the shielding cover 20 is larger than that of the first cover 10
  • the cross-sectional area is such that the shielding cover 20 can cover the first cover 10 therein.
  • the overall shape of the shielding cover 20 can be a cylindrical structure, a hemispherical structure, a hexahedral structure, etc.
  • shielding cover 20 and the first cover 10 can be an integrally connected structure or can be provided separately.
  • the shielding cover 20 is separated from the first cover 10 set up.
  • the shielding cover 20 that is separated from the first covering member 10 can be glued. It can be detachably connected to the first cover 10 by means of connection, snap connection, screw connection, magnetic connection, etc.
  • the spray shielding device includes a first cover 10 and a shield 20.
  • the first cover 10 can shield the opening 311 of the battery case 310 to prevent spray materials from entering the battery case 310 through the opening 311 and affecting the battery case. 310; the shielding cover 20 can shield the first cover 10, the gap between the first cover 10 and the battery case 310, etc., thereby further reducing the risk of internal contamination of the battery case 310 and improving the quality of battery production.
  • the shielding cover 20 can shield and protect the first cover 10, reduce the pollution of the first cover 10 by spraying materials, effectively ensure the repeated service life of the first cover 10, and at the same time, avoid the accumulation of spraying materials.
  • the disassembly and assembly accuracy of the first cover 10 is effectively ensured, and the deformation of the battery case 310 caused by dimensional changes of the first cover 10 is effectively reduced. risks, thereby effectively ensuring the quality of battery production.
  • the first cover 10 includes a body 11 and a protrusion 12 , the body 11 is used to cover the opening 311 , the body 11 includes a first surface 111 facing the opening 311 , and the protrusion 12 The protruding portion 12 protrudes from the first surface 111 , and the protruding portion 12 is used to extend into the battery case 310 through the opening 311 .
  • the main body 11 covers the opening 311 , and the outer peripheral surface of the main body 11 may or may not exceed the outer peripheral surface of the battery case 310 .
  • the shape of the protruding part 12 may or may not match the opening 311 of the battery case 310.
  • the opening 311 may be rectangular in shape, and the cross-section of the protruding part 12 may also be rectangular.
  • the protruding part 12 may have a rectangular shape.
  • the cross-section can also be circular.
  • the protruding portion 12 may be a columnar structure with equal cross-sections, a cone-shaped body with a tapered cross-section, or other irregular structures.
  • the battery case 310 has a rectangular parallelepiped structure
  • the opening 311 has a rectangular shape
  • the protruding portion 12 has a columnar structure with a rectangular cross-section.
  • the protruding portion 12 can be interference-fitted with the battery case 310 so that the first cover 10 is clamped on the battery case 310 to ensure the stability of the first cover 10 covering the opening 311 .
  • the protruding portion 12 can also have a clearance fit with the battery case 310, and the protruding portion 12 plays a role in limiting and guiding the body 11 and the battery case 310.
  • the cover includes a main body 11 and a protruding portion 12.
  • the main body 11 covers the opening 311 to shield the opening 311 of the battery case 310.
  • the protruding portion 12 extends into the battery case 310.
  • the protruding portion 12 is provided to cover the main body 11.
  • the battery case 310 plays a two-way limiting role with the battery case 310 to ensure the relative position accuracy of the first cover 10 and the battery case 310, improve the position accuracy of the first cover 10 covering the opening 311 of the battery case 310, and in the third Before the cover 10 is positioned with the housing, the risk of the first cover 10 being separated from the opening 311 can be effectively reduced; and the protruding portion 12 plays a guiding role in covering the first cover 10 in the opening 311, and the protruding portion 12 12 After being inserted into the opening 311, the first cover 10 can cover the opening 311, which effectively improves the accuracy of the first cover 10 covering the opening 311, and is conducive to improving the production efficiency and quality of the battery case 310, thereby improving battery production. Quality and efficiency.
  • the protrusion 12 is a clearance fit with the inner wall of the battery housing 310 .
  • the clearance between the protruding portion 12 and the inner wall of the battery case 310 is conducive to ensuring the convenience of disassembly and assembly of the first cover 10 and the battery case 310 and preventing the protruding portion 12 from causing scratches or deformation to the battery case 310 , thereby effectively ensuring the production quality of the battery case 310.
  • Figure 9 is a schematic structural diagram of a spray shielding device provided in some further embodiments of the present application; the shielding cover 20 is provided with a first magnetic member 30, and the first covering member 10 is provided with There is a second magnetic part 40 corresponding to the first magnetic part 30 , and the shielding cover 20 and the first cover part 10 are detachably connected through the first magnetic part 30 and the second magnetic part 40 .
  • one of the first magnetic component 30 and the second magnetic component 40 may be a magnetic component, and the other may be a magnetic conductive component.
  • the first magnetic component 30 is a magnetic component, such as a magnet
  • the second magnetic component 40 is a magnetically permeable component, such as an iron component that can attract each other to the magnet.
  • first magnetic component 30 and the second magnetic component 40 can be disposed at any position of the shielding cover 20 and the first cover 10 in any manner, as long as the requirements of the shielding cover 20 and the first cover are met. 10 After the first magnetic member 30 and the second magnetic member 40 are magnetically connected, the shielding cover 20 can be placed on the outer periphery of the first covering member 10 .
  • the shielding cover 20 and the first cover 10 are detachably connected through the first magnetic part 30 and the second magnetic part 40, which facilitates the disassembly and assembly of the shielding cover 20 and the first cover 10.
  • the shielding cover 20 is connected through magnetic attraction.
  • the first cover 10 is disposed on the first cover 10 , which can effectively ensure the stability of the shielding effect of the shield 20 on the first cover 10 and the battery case 310 ; and the shield 20 is connected by magnetic attraction.
  • the shielding cover 20 can be easily removed to avoid interference with the separation operation of the first cover 10 and the battery case 310 .
  • Figure 10 is an exploded view of the structure of the spray shielding device and the battery case provided in some embodiments of the present application
  • Figure 11 is a structural exploded view of A partial front cross-sectional view of the spray shielding device provided in some embodiments of the application is matched with the battery case
  • Figure 12 is a partial enlarged view of part A shown in Figure 11.
  • the shielding cover 20 includes a top wall 21 and a side wall 22.
  • the side wall 22 is surrounded by the top wall 21.
  • the side wall 22 is used to cover the outer peripheral surface of the first covering member 10.
  • the top wall 21 is used to cover the first covering member 10.
  • the first magnetic member 30 is disposed on the top wall 21 .
  • the top wall 21 is opposite to the first cover 10 to cover the surface of the first cover 10 away from the opening 311 , and the side wall 22 surrounds the first cover 10 .
  • An outer peripheral surface of the cover 10 is an outer peripheral surface of the cover 10 .
  • the first magnetic component 30 can be disposed in the shielding cover 20 between the first cover 10 and the top wall 21 , or can be embedded in the top wall 21 , or can even be disposed on the top wall 21 away from the first cover 10 On the surface, as long as the first magnetic component 30 can produce a magnetic attraction effect with the second magnetic component 40 .
  • the first magnetic member 30 is accommodated in the shielding cover 20 and is disposed on the surface of the top wall 21 facing the first covering member 10 .
  • the first magnetic element 30 is disposed on the top wall 21 of the shielding cover 20 so that the shielding cover 20 can be as close as possible to the outer periphery of the first cover 10 to effectively ensure that the first cover 10 is included in the shielding as much as possible. within the shielding range of the cover 20, thereby effectively ensuring the shielding effect of the shield cover 20 on the first cover 10.
  • the spray shielding device 100 further includes a connecting rod 50 .
  • the shielding cover 20 is provided with a mounting hole 211 .
  • One end of the connecting rod 50 passes through the mounting hole 211 and the first connecting rod 50 .
  • the magnetic suction piece 30 is connected.
  • the connecting rod 50 may be in the shape of a cylindrical rod, a rectangular parallelepiped rod, etc.
  • the shape of the connecting rod 50 is not uniquely limited in this embodiment.
  • the shielding cover 20 includes a top wall 21 and a side wall 22
  • the mounting hole 211 may be provided on the top wall 21 and penetrate the top wall 21 .
  • One end of the connecting rod 50 passes through the mounting hole 211 and can be fixedly connected to the first magnetic member 30 , or can be detachably connected by snapping, screwing, or other methods.
  • the connecting rod 50 is connected to the first magnetic piece 30 provided in the shielding cover 20, so that the connecting rod 50 and the shielding cover 20 are connected into an integrated structure, which facilitates the disassembly and assembly operation of the shielding cover 20, and facilitates the connection with the shielding cover through the connecting rod 50.
  • the first cover 10 and battery housing 310 to which the hood 20 is connected are connected to a spray hanger or other spray positioning device.
  • the first magnetic member 30 has a threaded through hole 31 , and one end of the connecting rod 50 passes through the threaded through hole 31 and is threadedly connected to the first magnetic member 30 .
  • the mounting hole 211 and the threaded through hole 31 can be coaxially arranged, and one end of the connecting rod 50 passes through the mounting hole 211 of the shielding cover 20 and extends into the threaded through hole 31 of the first magnetic attraction member 30 in the shielding cover 20 , and finally threadedly connected with the first magnetic piece 30 .
  • the connecting rod is threadedly connected to the first magnetic piece 30, which facilitates disassembly and assembly and effectively ensures the connection stability of the connecting rod 50.
  • the first magnetic piece 30 can provide a threaded hole with a larger axial size, thereby effectively ensuring the threading area of the connecting rod 50, which is conducive to ensuring the connection. Rod 50 connection stability.
  • the connecting rod 50 is a hollow rod
  • the first cover 10 is provided with a through hole 112
  • the inner cavity of the connecting rod 50 and the inner cavity of the battery case 310 are connected through the through hole 112 .
  • one end of the connecting rod 50 connected to the first magnetic member 30 may have an open structure, and the open end of the connecting rod 50 is connected to its own inner cavity. At the same time, the inner cavity of the connecting rod 50 is connected to the first magnetic part 30 .
  • the through holes 112 of the cover 10 are connected through the open ends of the connecting rods 50 .
  • the end of the connecting rod 50 can directly penetrate through the threaded through hole 31 and abut against the first cover 10 and the through hole 31 on the first cover 10 .
  • the holes 112 are connected, and the end of the connecting rod 50 does not need to exceed the outline of the first magnetic member 30 .
  • the inner cavity of the connecting member and the through hole 112 are connected through the threaded through hole 31 .
  • the through hole 112 may be provided in the body 11 and penetrate the body 11 and the protruding part 12.
  • the inner cavity of the connecting rod 50 and the inner cavity of the battery case 310 are connected through the through hole 112 on the first cover 10 .
  • the design of the through hole 112 of the first cover 10 and the hollow structure of the connecting rod 50 can improve the battery case.
  • the thermal expansion and contraction gases generated during the spraying and curing processes in the body 310 are discharged in a timely manner, thereby effectively ensuring the structural stability of the battery case 310 during the spraying process, which is conducive to further improving the production yield of the battery case 310, thereby improving Battery production quality.
  • both the connecting rod 50 and the first cover 10 are conductive parts, and the connecting rod 50 and the first cover 10 are electrically conductive.
  • both the connecting rod 50 and the first cover 10 are made of materials with good electrical conductivity.
  • the connecting rod 50 and the first cover 10 are both metal parts, and the materials of the connecting rod 50 and the first cover 10 can be selected. Iron, aluminum, alloy, etc.
  • the connecting rod 50 can be in direct contact with the first cover 10 to form electrical conduction, or the connecting rod 50 can be in contact with the first magnetic member 30 , and the first magnetic member 30 and the first cover 10 can be in direct contact, so that the connecting rod 50 It is electrically connected to the first cover 10 .
  • the connecting rod 50 is in direct contact with the first magnetic part 30
  • the first magnetic part 30 is in direct contact with the first covering part 10
  • the connecting rod 50 , the first magnetic part 30 , and the first covering part 10 are electrically connected.
  • the connecting rod and the first cover 10 are both conductive parts and are electrically connected, so that when the battery case 310 is sprayed using the electrostatic spraying process, the charges attached to the battery case 310 can be conducted away from the battery case 310 in a timely manner, effectively ensuring The safety and spraying stability of the battery case 310 are sprayed.
  • the spray shielding device 100 further includes a sleeve 60 , and the sleeve 60 is sleeved on the connecting rod 50 .
  • the sleeve 60 can be movably sleeved on the connecting rod 50 , and the relative position of the sleeve 60 and the connecting rod 50 can also be fixed.
  • the end of the connecting rod 50 that is away from the shielding cover 20 may or may not exceed the end of the sleeve 60 .
  • the inner cavity of the sleeve 60 may have the same shape and size as the outer periphery of the connecting rod 50 , or the inner cavity of the sleeve 60 may have a different shape than the outer periphery of the connecting rod 50 .
  • the sleeve 60 and the connecting rod 50 have the same shape.
  • the sleeve 60 is movably sleeved on the outer periphery of the connecting rod 50.
  • One end of the sleeve 60 is in contact with the shielding cover 20, and the other end is slightly shorter than the other end of the connecting rod 50. , so as to connect the shielding cover 20 and the first cover 10 to the spraying station or spraying hanger through the connecting rod 50 .
  • the sleeve 60 and the connecting rod 50 are interference-fitted, the relative positions of the sleeve 60 and the connecting pipe are fixed, one end of the sleeve 60 is in contact with the shielding cover 20 , and the other end of the sleeve 60 can be connected with The other end of the rod 50 is flush with or exceeds the other end of the connecting rod 50 so that the sleeve 60 covers the shaft of the connecting rod 50 as much as possible.
  • the casing 60 can be a metal tube, an insulating material tube, or the like.
  • the sleeve 60 can be made of insulating material.
  • the sleeve 60 can be made of insulating material, which can play a role in protecting the connecting rod 50 The insulation protection function effectively ensures the safety of the battery case 310 spraying operation.
  • a sleeve 60 is set on the connecting rod 50 , and the sleeve 60 plays a role in spraying and shielding the connecting rod 50 to prevent spray materials from contaminating the connecting rod 50 and affecting the service life of the connecting rod 50 .
  • the material of the sleeve 60 and the shielding cover 20 is Teflon.
  • Teflon refers to polytetrafluoroethylene, which is a polymer made by polymerizing tetrafluoroethylene as a monomer.
  • the material of the casing 60 and the shielding cover 20 is Teflon.
  • Teflon has outstanding high temperature resistance and is not prone to high temperature deformation, thereby further effectively ensuring the repeated service life of the connecting rod 50 and the shielding cover 20 .
  • the spray shielding device 100 includes a first cover 10, a shield 20, a connecting rod 50, and a sleeve 60.
  • the first cover 10 is To cover the opening 311 of the battery case 310; the shielding cover 20 is configured to cover the outer periphery of the first cover 10 after the first cover 10 covers the opening 311.
  • the first cover 10 includes a body 11 and a protruding portion 12.
  • the body 11 is used to cover the opening 311.
  • the body 11 includes a first surface 111 facing the opening 311.
  • the protruding portion 12 protrudes from the first surface 111.
  • the protruding portion 12 It is used to extend into the battery case 310 through the opening 311.
  • the protruding portion 12 is clearance-fitted with the inner wall of the battery case 310.
  • the outer peripheral surface of the body 11 and the outer peripheral surface of the battery case 310 are bonded by adhesive tape.
  • the shielding cover 20 includes a top wall 21 and a side wall 22.
  • the side wall 22 is surrounded by the top wall 21.
  • the side wall 22 is used to cover the outer peripheral surface of the first covering member 10.
  • the top wall 21 is used to cover the first covering member 10. The surface facing away from the opening 311.
  • the shielding cover 20 is provided with a first magnetic component 30, and the first cover 10 is provided with a second magnetic component 40 corresponding to the first magnetic component 30.
  • the shielding cover 20 and the first cover 10 pass through the first magnetic component.
  • 30 and the second magnetic member 40 are detachably connected.
  • the first magnetic member 30 is accommodated in the shielding cover 20 and disposed on the top wall 21 .
  • the second magnetic member 40 is embedded in the surface of the body 11 away from the opening 311 .
  • the first magnetic attraction component 30 is made of magnetically conductive stainless iron
  • the second magnetic attraction component 40 is a magnet.
  • the shielding cover 20 is provided with a mounting hole 211 , and the first magnetic component 30 has a threaded through hole 31 .
  • One end of the connecting rod 50 passes through the mounting hole 211 and is threaded through the threaded through hole 31 to be threadedly connected to the first magnetic component 30 .
  • the connecting rod 50 has a hollow structure, and the first cover 10 is provided with a through hole 112 that penetrates the body 11 and the protruding portion 12.
  • the first magnetic member 30 fits the surface of the body 11 away from the opening 311, the threaded through hole 31 corresponds to the through hole 112, and the inner cavity of the connecting rod 50 communicates with the inner cavity of the battery case 310 through the through hole 112 and the threaded through hole 31.
  • the connecting rod 50 and the first covering member 10 are both conductive members.
  • the sleeve 60 is movably mounted on the connecting rod 50 , and both the sleeve 60 and the shielding cover 20 are made of Teflon.
  • the other end of the connecting rod 50 is detachably connected to the base 70.
  • the connecting rod 50 and the base 70 are limited by The structure is detachably connected.
  • the base 70 includes a bottom plate 71, a limiting plate 72 arranged opposite to the bottom plate 71, and a connecting plate 73 connecting the bottom plate 71 and the limiting plate 72.
  • the bottom plate 71, the connecting plate 73 and the limiting plate 72 form a limiting plate.
  • the limit slot 75 includes a limit block 80 .
  • the limit block 80 is inserted into the limit slot 75 .
  • the connecting rod 50 away from the shielding cover 20 is connected to the surface of the limit block 80 facing the connecting plate 73 .
  • the connecting plate 73 is provided with an escape opening 74 for the connecting rod 50 to pass through.
  • the escape opening 74 extends to an edge of one end of the limiting plate 72 away from the connecting plate 73 .
  • the limiting block 80 is fixed on the end of the connecting rod 50 away from the shielding cover 20 , and the connecting rod 50 can be clamped on the base 70 by inserting the limiting block 80 into the limiting groove 75 .
  • the limiting block 80 may also be provided with a threaded through hole 31, and the outer periphery of the connecting rod 50 may be provided with external threads.
  • the connecting rod 50 and the limiting block 80 may be threadedly connected.
  • the base 70 can be fixed on the spraying conveyor line, the spraying station, or the spraying rack through welding, screwing, etc.

Landscapes

  • Sealing Battery Cases Or Jackets (AREA)

Abstract

本申请提供一种喷涂遮蔽方法及喷涂遮蔽装置,该喷涂遮蔽方法用于遮蔽电池壳体的开口和留白区,靠近开口一端的电池壳体的外周面形成留白区,喷涂遮蔽方法包括:将第一覆盖件覆盖在开口上;将第二覆盖件围绕在电池壳体的靠近开口的一端,使第二覆盖件覆盖留白区。本申请技术方案中,将第一覆盖件覆盖在电池壳体的开口上可对电池壳体的内部进行遮蔽,将第二覆盖件围绕在电池壳体的靠近开口的一端以对电池壳体的留白区进行遮蔽。通过第一覆盖件和第二覆盖件对电池壳体的内部和留白区分别进行遮蔽,从而有效防止电池壳体的非喷涂区域被污染,并有效保证电池壳体的留白区的预留尺寸精度,进而通过有效提高电池壳体的生产质量提高电池生产质量。

Description

喷涂遮蔽方法及喷涂遮蔽装置 技术领域
本申请涉及电池生产技术领域,特别是涉及一种喷涂遮蔽方法及喷涂遮蔽装置。
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。
在电池生产技术中,如何提高电池的生产质量是一个亟需解决的问题。
发明内容
本申请提供一种喷涂遮蔽方法及喷涂遮蔽装置,该喷涂遮蔽方法能够在电池壳体喷涂工艺中有效防止电池壳体的非喷涂区的污染,同时有效提高电池壳体留白区遮蔽精度,从而有效提高电池生产质量。
第一方面,本申请提供一种喷涂遮蔽方法,用于遮蔽电池壳体的开口和留白区,靠近开口一端的电池壳体的外周面形成留白区,喷涂遮蔽方法包括:将第一覆盖件覆盖在开口上;将第二覆盖件围绕在电池壳体的靠近开口的一端,使第二覆盖件覆盖留白区。
本申请技术方案中,将第一覆盖件覆盖在电池壳体的开口上,可对电池壳体的内部进行遮蔽,从而有效避免喷涂物料经开口进入电池壳体的内部;将第二覆盖件围绕在电池壳体的靠近开口的一端,并覆盖电池壳体的留白区,以对电池壳体的留白区进行遮蔽,通过第一覆盖件和第二覆盖件对电池壳体的内部和留白区分别进行遮蔽,从而有效防止电池壳体的非喷涂区域被污染,并有效保证电池壳体的留白区的预留尺寸精度,进而通过有效提高电池壳体的生产质量提高电池生产质量。
根据本申请的一些实施例,将第二覆盖件围绕在电池壳体的靠近开口的一端,使第二覆盖件覆盖留白区,包括:使第二覆盖件同时覆盖第一覆盖件的外周面的至少一部分和留白区,通过第二覆盖件连接电池壳体和第一覆盖件。
上述技术方案中,第二覆盖件覆盖留白区的同时,覆盖第一覆盖件的外周面的至少一部分,电池壳体和第一覆盖件通过第二覆盖件连接。第二覆盖件不仅起到遮蔽留白区的作用,还起到连接第一覆盖和电池壳体的作用,有效保证第一覆盖件和电池壳体的连接稳定性,从而进一步保证第二覆盖件对留白区的遮蔽精度,有利于进一步提高留白区的尺寸精度,保证电池壳体生产质量。同时,将第二覆盖件围绕在电池壳体的靠近开口的一端时,同步完成第一覆盖件和电池壳体的连接以及留白区的遮蔽,有效提高电池壳体遮蔽效率。
根据本申请的一些实施例,第二覆盖件为胶带,将第二覆盖件围绕在电池壳体的靠近开口的一端,使第二覆盖件覆盖留白区,包括:使胶带同时覆盖第一覆盖件的外周面的至少一部分和留白区,通过胶带连接电池壳体和第一覆盖件。
上述技术方案中,第一覆盖件使用胶带,胶带能够粘附在电池壳体上并覆盖电 池壳体的留白区,以对电池壳体的留白区进行遮蔽。因为胶带能够更为稳固的与电池壳体粘接,所以在喷涂过程中,胶带在电池壳体上的位置不易发生改变,从而能够有效保证对电池壳体的留白区的遮蔽精度,进而有效保证电池壳体的留白区的尺寸精度,通过提高电池壳体的生产质量有效提高电池生产质量。并且,在将胶带缠绕在电池壳体的靠近开口的一端时,胶带不仅起到遮蔽留白区的作用,还将第一覆盖件通过胶带固定在电池壳体上,有效保证第一覆盖件和电池壳体的连接稳定性。通过胶带粘接第一覆盖件和电池单体,其可操作性强,同时,相较于采用其他使第一覆盖件固定于电池壳体的方式,采用胶带粘接的方式可有效降低第一覆盖件对电池壳体造成碰刮伤、变形等损害的风险,从而有效保证电池壳体的生产质量,进而有利于提高电池的生产质量。
根据本申请的一些实施例,胶带的宽度为L,胶带与第一覆盖件的连接区的宽度为L1,满足,0.5≤L1/L≤0.7。
上述技术方案中,如果胶带覆盖在第一覆盖件上的宽度过宽,则会影响胶带对电池壳体的留白区的遮蔽宽度,且会增加胶带脱离电池壳体留白区而造成留白区遮蔽失效的风险;而如果胶带覆盖在第一覆盖件上的宽度过过小,则无法保证胶带粘接第一覆盖件的稳定性,会增加第一覆盖件脱离电池壳体而致使电池壳体内部遮蔽失效的风险;胶带与第一覆盖件连接区的宽度占胶带的总宽度的百分之五十至百分之70,可在有效保证留白区遮蔽尺寸需求和留白区遮蔽稳定性的同时,有效保证第一覆盖件与电池壳体连接的稳定性。
根据本申请的一些实施例,留白区的宽度为L2,满足,4mm≤L2≤6.25mm。
上述技术方案中,电池壳体的留白区为方便电池壳体与盖体或其他盖合件的焊接而预留,如果留白区的宽度过小,会影响电池壳体与盖体或其他盖合件的焊接稳定性,如果留白区的宽度过大,则会在电池壳体外周面上形成过多喷涂遗留区,影响电池壳体的绝缘性能,将留白区的宽度设计在4mm至6.25mm之间,可在有效保证焊接面充足的同时保证电池壳体的绝缘性能,有效提高电池生产质量。
根据本申请的一些实施例,第一覆盖件包括本体和凸出部,本体包括面向开口的第一表面,凸出部凸出于第一表面;将第一覆盖件覆盖在开口上,包括:将本体覆盖在开口上,使凸出部经开口伸入电池壳体,并使凸出部与电池壳体间隙配合。
上述技术方案中,第一覆盖件包括本体和凸出部,本体覆盖在开口上对电池壳体的开口进行遮蔽,凸出部伸入电池壳体,凸出部的设置可对本体和电池壳体起到双向限位作用,保证第一覆盖件和电池壳体的相对位置精度,提高第一覆盖件覆盖在电池壳体的开口的位置精度,且在第一覆盖件与壳体定位前,可有效降低第一覆盖件脱离开口的风险;并且,凸出部为将第一覆盖件覆盖在开口起到导向作用,将凸出部插入开口后,即可使第一覆盖件覆盖开口,有效提高了第一覆盖件覆盖开口的作业精度,有利于提高电池壳体生产效率和质量。凸出部与电池壳体的内壁间隙配合,有利于保证第一覆盖件与电池壳体的拆装便捷性,且避免凸出部对电池壳体造成碰刮伤或变形,从而有效保证电池壳体生产质量。
根据本申请的一些实施例,在将第二覆盖件围绕在电池壳体的靠近开口的一端,使第二覆盖件覆盖留白区后,喷涂遮蔽方法还包括:在第一覆盖件的外周罩设遮蔽罩。
上述技术方案中,在第一覆盖件的外周罩设遮蔽罩,一方面,遮蔽罩可进一步减少电池壳体内部和留白区的污染,进一步提高电池生产质量;另一方面,遮蔽罩可对第一覆盖件起到遮蔽保护作用,降低第一覆盖件受喷涂物料的污染,有效保证第一覆盖件的重复使用寿命,同时,可避免喷涂物料聚集在第一覆盖件上或第一覆盖件与 电池壳体之间,有效保证第一覆盖件拆装精度,且有效降低第一覆盖件因尺寸变化而引起电池壳体变形的风险,从而有效保证电池生产质量。
第二方面,本申请提供了一种喷涂遮蔽装置,包括:覆盖件,用于覆盖电池壳体的开口;遮蔽罩,被配置为在覆盖件覆盖开口后罩设在覆盖件的外周。
本申请技术方案中,喷涂遮蔽装置包括覆盖件和遮蔽罩,覆盖件可对电池壳体的开口起到遮蔽作用,避免喷涂物料经开口进入电池壳体内部而影响电池壳体的质量;遮蔽罩可对覆盖件、覆盖件与电池壳体之间的缝隙等处进行遮蔽,进而进一步降低电池壳体内部污染的风险,提高电池生产质量;同时,遮蔽罩可对覆盖件起到遮蔽保护作用,降低覆盖件受喷涂物料的污染,有效保证覆盖件的重复使用寿命,同时,可避免喷涂物料聚集在覆盖件上或覆盖件与电池壳体之间,有效保证覆盖件拆装精度,且有效降低覆盖件因尺寸变化而引起电池壳体变形的风险,从而有效保证电池生产质量。
根据本申请的一些实施例,覆盖件包括本体和凸出部,本体用于覆盖开口,本体包括面向开口的第一表面,凸出部凸出于第一表面,凸出部用于经开口伸入电池壳体。
上述技术方案中,覆盖件包括本体和凸出部,本体覆盖在开口上对电池壳体的开口进行遮蔽,凸出部伸入电池壳体,凸出部的设置可对本体和电池壳体起到双向限位作用,保证覆盖件和电池壳体的相对位置精度,提高覆盖件覆盖在电池壳体的开口的位置精度,且在覆盖件与壳体定位前,可有效降低覆盖件脱离开口的风险;并且,凸出部为将覆盖件覆盖在开口起到导向作用,将凸出部插入开口后,即可使覆盖件覆盖开口,有效提高了覆盖件覆盖开口的作业精度,有利于提高电池壳体生产效率和质量。
根据本申请的一些实施例,凸出部与电池壳体的内壁间隙配合。
上述技术方案中,凸出部与电池壳体的内壁间隙配合,有利于保证覆盖件与电池壳体的拆装便捷性,且避免凸出部对电池壳体造成碰刮伤或变形,从而有效保证电池壳体生产质量。
根据本申请的一些实施例,遮蔽罩设置有第一磁吸件,覆盖件设置有与第一磁吸件对应的第二磁吸件,遮蔽罩和覆盖件通过第一磁吸件和第二磁吸件可拆卸连接。
上述技术方案中,遮蔽罩和覆盖件通过第一磁吸件和第二磁吸件可拆卸连接,便于遮蔽罩和覆盖件的拆装连接,遮蔽罩通过磁吸连接在覆盖件并罩设在覆盖件上,可有效保证遮蔽罩对覆盖件和电池壳体的遮蔽效果的稳定性;且遮蔽罩通过磁吸的方式连接至覆盖件,可避免在拆装遮蔽罩过程中对覆盖件过多施力,从而有效保证覆盖件的覆盖、遮蔽精度;并且,在电池壳体喷涂结束后,可便捷的拆除遮蔽罩,避免对覆盖件和电池壳体的分离作业造成干涉。
根据本申请的一些实施例,遮蔽罩包括顶壁和侧壁,侧壁围设于顶壁的周围,侧壁用于覆盖覆盖件的外周面,顶壁用于覆盖覆盖件的背离开口的表面,第一磁吸件设置于顶壁。
上述技术方案中,第一磁吸件设置于遮蔽罩的顶壁,使得遮蔽罩和覆盖件尽可能靠近,以有效保证将覆盖件尽可能纳入遮蔽罩的遮蔽范围内,从而有效保证遮蔽罩对覆盖件的遮蔽效果。
根据本申请的一些实施例,喷涂遮蔽装置还包括连接杆,遮蔽罩设有安装孔,连接杆的一端穿设于安装孔与第一磁吸件连接。
上述技术方案中,连接杆与设置在遮蔽罩内的第一磁吸件连接,使得连接杆与遮蔽罩连接为一体结构,方便遮蔽罩的拆装操作,且便于通过连接杆将与遮蔽罩连接 的覆盖件和电池壳体连接至喷涂挂架或其他喷涂定位设备。
根据本申请的一些实施例,第一磁吸件具有螺纹通孔,连接杆的一端穿设于螺纹通孔与第一磁吸件螺纹连接。
上述技术方案中,连接杆与第一磁吸件螺纹连接,方便拆装,且有效保证连接杆的连接稳定性。
根据本申请的一些实施例,连接杆为中空杆,覆盖件设有通孔,连接杆的内腔与电池壳体的内腔通过通孔连通。
上述技术方案中,连接杆的内腔与电池壳体的内腔通过覆盖件上的通孔连通,覆盖件的通孔和连接杆的中空结构的设计,可对电池壳体内在喷涂、固化过程中产生的热胀冷缩气体进行及时排放,从而有效保证电池壳体在喷涂工艺中的结构稳定性,有利于进一步提高电池壳体的生产良率,进而提高电池的生产质量。
根据本申请的一些实施例,连接杆和覆盖件均为导电件,且连接杆和覆盖件电导通。
上述技术方案中,连接杆和覆盖件均为导电件且电导通,以便于采用静电喷涂工艺对电池壳体进行喷涂时,将电池壳体上附着的电荷及时导离电池壳体,有效保证电池壳体喷涂的安全性和喷涂稳定性。
根据本申请的一些实施例,喷涂遮蔽装置还包括:套管,套设于连接杆。
上述技术方案中,在连接杆上套设套管,套管对连接杆起到喷涂遮蔽作用,避免喷涂物料污染连接杆而影响连接杆的使用寿命。
根据本申请的一些实施例,套管和遮蔽罩的材质为铁氟龙。
上述技术方案中,套管和遮蔽罩的材质均为铁氟龙,一方面,电池壳体的绝缘喷涂物料在铁氟龙上的附着性差,喷涂在套管和遮蔽罩上的喷涂物料便于清洁,从而便于套管和遮蔽罩重复使用;另一方面,套管和遮蔽罩采用铁氟龙材质,则套管和遮蔽罩具有较好的绝缘性能,从而有效保证电池壳体喷涂作业的安全性。
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为常规电池单体的简易结构示意图;
图2为本申请一些实施例提供的喷涂遮蔽方法的流程示意图;
图3为本申请一些实施例提供的将第一覆盖件覆盖在电池壳体的开口的爆炸示意图;
图4为本申请一些实施例提供的将第一覆盖件覆盖在电池壳体的开口的结构示意图;
图5为本申请一些实施例提供的将第二覆盖件围绕在电池壳体的靠近开口的一端的立体结构示意图;
图6为本申请一些实施例提供的将第二覆盖件围绕在电池壳体的靠近开口的一端的主视剖面图;
图7为本申请一些实施例提供的将遮蔽罩罩设在第一覆盖件外周的爆炸示意图;
图8为本申请一些实施例提供的喷涂遮蔽装置的结构示意图;
图9为本申请再一些实施例提供的喷涂遮蔽装置的结构示意图;
图10为本申请一些实施例提供的喷涂遮蔽装置与电池壳体配合的结构爆炸图;
图11为本申请一些实施例提供的喷涂遮蔽装置与电池壳体配合的局部主视剖面图;
图12为图11所示的A部分的局部放大图。
在附图中,附图并未按照实际的比例绘制。
标记说明:100-喷涂遮蔽装置;10-第一覆盖件;11-本体;111-第一表面;112-通孔;12-凸出部;20-遮蔽罩;21-顶壁;211-安装孔;22-侧壁;30-第一磁吸件;31-螺纹通孔;40-第二磁吸件;50-连接杆;60-套管;70-基座;71-底板;72-限位板;73-连接板;74-避让口;75-限位槽;80-限位块;200-第二覆盖件;300-电池单体;310-电池壳体;311-开口;312-留白区;320-盖体;330-电极组件。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚,下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本申请一部分实施例,而不是全部的实施例。通常在此处附图中描述和示出的本申请实施例的组件可以以各种不同的配置来布置和设计。
因此,以下对在附图中提供的本申请的实施例的详细描述并非旨在限制要求保护的本申请的范围,而是仅仅表示本申请的选定实施例。基于本申请中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
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“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“设置”“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;可以是机械连接,也可以是电连接、信号连接;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。
在本申请的实施例中,相同的附图标记表示相同的部件,并且为了简洁,在不同实施例中,省略对相同部件的详细说明。应理解,附图示出的本申请实施例中的各种部件的厚度、长宽等尺寸,以及集成装置的整体厚度、长宽等尺寸仅为示例性说明,而不应对本申请构成任何限定。
请参照图1,图1为常规电池单体的简易结构示意图。本申请的实施例所提到的电池壳体310是电池单体300的组成结构,电池单体300包括电池壳体310、盖体320、电极组件330和电解液,电池壳体310具有开口311,用于向电池壳体310内装入电极组件330、电解液及其他部件,电极组件330收容于电池壳体310内,盖体320盖合于电池壳体310的开口311,盖体320与电池壳体310共同限定出密封空间。
本申请实施例所提到的留白区312是指在电池壳体310的靠近开口311一端的外周面留出的不进行喷涂或表面处理的空白区。通常,留白区312可以用于形成电池壳体310与盖体320的焊接区域。
本申请的实施例所提到的喷涂遮蔽是指对目标件(本申请实施例中目标件为电池壳体310)进行局部喷涂时,对非喷涂区域(电池壳体310的内部和留白区312)进行遮挡,以限制非喷涂区域被喷涂物料污染。
在电池生产技术中,如何提高电池的生产质量是一个亟需解决的问题。
在电池生产工艺中,对电池壳体的表面进行绝缘处理是避免电池之间发生绝缘失效的重要工艺。在一些相关技术中,会采用喷涂处理工艺在电池壳体表面形成绝缘层。然而,发明人发现,在对电池壳体进行喷涂处理时,常会造成电池壳体的内部以及电池壳体的外侧的留白区污染。
为了有效解决喷涂过程中电池壳体的内部和留白区易污染的问题,申请人经过研究提出了一种喷涂遮蔽方法,用于遮蔽电池壳体的开口和留白区,主要包括:将第一覆盖件覆盖在开口上;将第二覆盖件围绕在电池壳体的靠近开口的一端,使第二覆盖件覆盖留白区。
本申请技术方案中,将第一覆盖件覆盖在电池壳体的开口上,可对电池壳体的内部进行遮蔽,从而有效避免喷涂物料经开口进入电池壳体的内部;将第二覆盖件围绕在电池壳体的靠近开口的一端,并覆盖电池壳体的留白区,以对电池壳体的留白区进行遮蔽,通过第一覆盖件和第二覆盖件对电池壳体的内部和留白区分别进行遮蔽,从而有效防止电池壳体的非喷涂区域被污染,并有效保证电池壳体的留白区的预留尺寸精度,进而通过有效提高电池壳体的生产质量提高电池生产质量。
本申请实施例公开的喷涂遮蔽方法和喷涂遮蔽装置不仅可以用于电池壳体的喷涂工艺,也可以用于固体或液体食品、化工用品等各种壳体的喷涂工艺。为了描述简洁清楚,以下实施例均以电池壳体的喷涂遮蔽为例进行说明。
请继续参照图1并进一步参照图2至图6,图2为本申请一些实施例提供的喷涂遮蔽方法的流程示意图;图3为本申请一些实施例提供的将第一覆盖件覆盖在电池壳体的开口的爆炸示意图;图4为本申请一些实施例提供的将第一覆盖件覆盖在电池壳体的开口的结构示意图;图5为本申请一些实施例提供的将第二覆盖件围绕在电池 壳体的靠近开口的一端的立体结构示意图;图6为本申请一些实施例提供的将第二覆盖件围绕在电池壳体的靠近开口的一端的主视剖面图。
本申请一些实施例提供了一种喷涂遮蔽方法,用于遮蔽电池壳体310的开口311和留白区312,靠近开口311一端的壳体的外周面形成留白区312,喷涂遮蔽方法包括:
S1:将第一覆盖件10覆盖在开口311上;
如前所述,电池壳体310是电池单体300的用于容纳电极组件330和其他构件的结构,电池壳体310可以呈一端具有开口311的空心结构,也可以是相对两端呈开口311的空心结构。电池壳体310可以是多种形状,例如圆柱体、长方体等等。
留白区312是指电池壳体310外周面上预留的不需要进行喷涂处理的空白区。
第一覆盖件10用于覆盖在电池单体300的开口311上,以遮蔽电池壳体310的内部,限制喷涂物料经电池壳体310的开口311进入电池壳体310内部。第一覆盖件10的形状可以与电池壳体310的形状相适配,比如,电池壳体310为长方体结构,第一覆盖件10可以为矩形,再如,电池壳体310为圆柱体结构,第一覆盖件10可以为圆形,等等。当然,第一覆盖件10的形状和电池壳体310的形状也可以不适配,比如,电池壳体310为长方体结构,第一覆盖件10为圆形等等。第一覆盖件10的横截面面积可以大于电池壳体310的开口面积,以确保遮蔽的充分性,当然,第一覆盖件10的横截面面积也可以等于电池壳体310的开口311面积且形状相同,以与电池壳体310的开口311适配。
将第一覆盖件10覆盖在开口311上,可以采用人工作业的方式完成,也可以采用机械设备完成,具体而言,可以固定电池壳体310的位置,将第一覆盖件10动态移动至电池壳体310的开口311并覆盖在开口311上;也可以固定第一覆盖件10的位置,将电池壳体310动态移动至第一覆盖件10并使电池壳体310的开口311抵在第一覆盖件10上;当然,也可以相向移动电池壳体310和第一覆盖件10,使第一覆盖件10覆盖在开口311上。
第一覆盖件10覆盖在开口311上时,第一覆盖件10可以部分伸入电池壳体310的开口311,当然,第一覆盖件10也可以不伸入电池壳体310的开口311而仅是覆盖在电池壳体310的具有开口311的端部上。
为了固定第一覆盖件10与电池壳体310的相对位置,以确保第一覆盖件10覆盖在开口311上的稳定性,第一覆盖件10可以采用粘接、卡接、磁吸连接等方式与电池壳体310可拆卸连接。
S2:将第二覆盖件200围绕在电池壳体310的靠近开口311的一端,使第二覆盖件200覆盖留白区312。
第二覆盖件200可以采用具有一定结构强度的片状遮蔽结构、也可以采用柔性的遮蔽膜结构、或者采用任意一种常规的具有黏附力的胶带等。
第二覆盖件200沿电池壳体310的周向围绕在电池壳体310的外周面,留白区312被第二覆盖件200完全覆盖,第二覆盖件200与电池壳体310的交界线即可形成留白区312的边界线。
可以理解的是,将第二覆盖件200围绕在电池壳体310的靠近开口311的一端可以采用人工作业的方式,也可以采用机械作业方式,在将第二覆盖件200围绕在电池壳体310上时,可以使电池壳体310保持静止状态,驱动第二覆盖件200绕电池壳体310的外周移动并缠绕在电池壳体310上;也可以驱动电池壳体310自转,以将第二覆盖件200裹覆式缠绕在电池壳体310上;当然,也可以驱动电池壳体310自转,驱动第二覆盖件200绕电池壳体310沿其自转方向的反向公转,以更快速的将第二覆 盖件200缠绕在电池壳体310上。
将第一覆盖件10覆盖在电池壳体310的开口311上,可对电池壳体310的内部进行遮蔽,从而有效避免喷涂物料经开口311进入电池壳体310的内部;将第二覆盖件200围绕在电池壳体310的靠近开口311的一端,并覆盖电池壳体310的留白区312,以对电池壳体310的留白区312进行遮蔽,通过第一覆盖件10和第二覆盖件200对电池壳体310的内部和留白区312分别进行遮蔽,从而有效防止电池壳体310的非喷涂区域被污染,并有效保证电池壳体310的留白区312的预留尺寸精度,进而通过有效提高电池壳体310的生产质量而提高电池生产质量。
根据本申请的一些实施例,如图5和图6所示,将第二覆盖件200围绕在电池壳体310的靠近开口311的一端,使第二覆盖件200覆盖留白区312,包括:使第二覆盖件200同时覆盖第一覆盖件10的外周面的至少一部分和留白区312,通过第二覆盖件200连接电池壳体310和第一覆盖件10。
具体而言,在将第二覆盖件200围绕在电池壳体310的靠近开口311的一端时,第二覆盖件200的一部分完全覆盖留白区312,第二覆盖件200的另一部分超出电池壳体310的开口端并覆盖在第一覆盖件10的外周面上,第二覆盖件200的超出电池壳体310的开口端的部分可以完全覆盖第一覆盖件10的外周面,也可以只覆盖到第一覆盖件10的部分外周面。这样,第二覆盖件200同时覆盖电池壳体310的留白区312和第一覆盖件10的外周面,第一覆盖件10和电池壳体310通过第二覆盖件200连接,从而使电池壳体310和第一覆盖件10的相对位置固定。
第二覆盖件200覆盖留白区312的同时,覆盖第一覆盖件10的外周面的至少一部分,电池壳体310和第一覆盖件10通过第二覆盖件200连接。第二覆盖件200不仅起到遮蔽留白区312的作用,还起到连接第一覆盖10和电池壳体310的作用,有效保证第一覆盖件10和电池壳体310的连接稳定性,从而进一步保证第二覆盖件200对留白区312的遮蔽精度,有利于进一步提高留白区312的尺寸精度,保证电池壳体310生产质量。同时,将第二覆盖件200围绕在电池壳体310的靠近开口的一端时,同步完成第一覆盖件10和电池壳体310的连接以及对留白区312的遮蔽,有效提高电池壳体310遮蔽效率。
根据本申请的一些实施例,第二覆盖件200为胶带,将第二覆盖件200围绕在电池壳体310的靠近开口的一端,使第二覆盖件200覆盖留白区312,包括:使胶带同时覆盖第一覆盖件10的外周面的至少一部分和留白区312,通过胶带连接电池壳体310和第一覆盖件10。
胶带可以采用任意一种常规胶带,示例性的,胶带可以采用高温胶带,比如铁氟龙高温胶带、PET高温胶带等。
现有的喷涂辅助装置通常采用内撑件和外遮蔽件配合的结构夹持固定电池壳体310并遮蔽电池壳体310的内部和留白区312,在电池壳体310转移过程中或翻转过程中,喷涂辅助装置和电池壳体310的相对位置容易发生偏位,外遮蔽件对留白区312的遮蔽容易偏移,致使留白区312遮蔽失效,造成留白区312的尺寸公差较大,无法满足生产精度需求。另外,在喷涂后的高温固化过程中,外遮蔽件容易发生变形,变形后的外遮蔽件难以保证对留白区312的重复遮蔽精度,同样会使得留白区312的尺寸公差较大,无法满足生产精度需求。并且,将变形的喷涂遮蔽装置拆离电池壳体310时,极易造成电池壳体310碰刮伤甚至变形,进一步影响电池壳体310的生产质量。
而将第二覆盖件200设置为胶带,胶带能够粘附在电池壳体310上并覆盖电池壳体310的留白区312,以对电池壳体310的留白区312进行遮蔽。因为胶带能够更为稳固的与电池壳体310粘接,所以在喷涂过程中,胶带在电池壳体310上的位置不易 发生改变,从而能够有效保证对电池壳体310的留白区312的遮蔽精度,进而有效保证电池壳体310的留白区312的尺寸精度,通过提高电池壳体310的生产质量有效提高电池生产质量;并且,胶带通过粘接力附着在电池壳体310上,胶带的拆装均不易对电池壳体310造成碰刮伤甚至变形,从而进一步保证了电池壳体310的生产质量。
并且,在将胶带缠绕在电池壳体310的靠近开口的一端时,胶带不仅起到遮蔽留白区312的作用,还将第一覆盖件10通过胶带固定在电池壳体310上,有效保证第一覆盖件10和电池壳体310的连接稳定性。更为突出的是,胶带通过粘接力附着在电池壳体310上,喷涂结束后,将胶带脱离电池壳体310即可,胶带的拆装均不易对电池壳体310造成碰刮伤甚至变形,从而进一步保证了电池壳体310的生产质量。
根据本申请的一些实施例,胶带的宽度为L,胶带与第一覆盖件10的连接区的宽度为L1,满足,0.5≤L1/L≤0.7。
具体而言,如图6所示,胶带的宽度方向和连接区的宽度方向均沿X方向延伸,胶带的宽度方向可以与电池壳体310的开口311所在平面垂直也可以与电池壳体310的开口311所在平面不垂直。
L1/L的取值可以是0.5至0.7之间的任意数值,比如L1/L可以是0.5、0.54、0.6、0.62、0.68、0.7等。
优选地,L1/L的取值可以是0.6至0.7之间的任意数值,比如L1/L可以是0.6、0.61、0.62、0.63、0.65、0.69、0.7等。
示例性的,L1/L的取值为0.7。
如果胶带覆盖在第一覆盖件10上的宽度过宽,则会影响胶带对电池壳体310的留白区312的遮蔽宽度,且会增加胶带脱离电池壳体310留白区312而造成留白区312遮蔽失效的风险;而如果胶带覆盖在第一覆盖件10上的宽度过过小,则无法保证胶带粘接第一覆盖件10的稳定性,会增加第一覆盖件10脱离电池壳体310而致使电池壳体310内部遮蔽失效的风险;胶带与第一覆盖件10连接区的宽度占胶带的总宽度的百分之五十至百分之70,可在有效保证留白区312遮蔽尺寸需求和留白区312遮蔽稳定性的同时,有效保证第一覆盖件10与电池壳体310连接的稳定性。
根据本申请的一些实施例,留白区312的宽度为L2,满足,4mm≤L2≤6.25mm。
如图6所示,留白区312的宽度沿垂直于电池壳体310的开口面的方向(X方向)延伸。
留白区312的宽度L2可以是4mm至6.25mm之间的任意数值,比如,L2可以是4mm、4.5mm、4.9mm、5mm、5.6mm、6mm、6.25mm等等。示例性的,留白区312的宽度L2可以为6.25mm。
电池壳体310的留白区312可以形成电池壳体310与盖体320的焊接区,如果留白区312的宽度过小,会影响电池壳体310与盖体320或其他盖合件的焊接稳定性,如果留白区312的宽度过大,则会在电池壳体310外周面上形成过多喷涂遗留区,影响电池壳体310的绝缘性能,将留白区312的宽度设计在4mm至6.25mm之间,可在有效保证焊接面充足的同时保证电池壳体310的绝缘性能,有效提高电池生产质量。
根据本申请的一些实施例,请再次参照图3,第一覆盖件10包括本体11和凸出部12,本体11包括面向开口311的第一表面111,凸出部12凸出于第一表面111;将第一覆盖件10覆盖在开口311上,包括:将本体11覆盖在开口311上,使凸出部12经开口311伸入电池壳体310,并使凸出部12与电池壳体310间隙配合。
具体而言,凸出部12的形状可以和电池壳体310的开口311形状相同也可以 不同,比如,开口311形状可以为矩形,同时,凸出部12的横截面可以同为矩形,当然,凸出部12的横截面也可以为圆形。
示例性的,电池壳体310为长方体结构,开口311为矩形,凸出部12为横截面为矩形的柱状结构。
本体11覆盖在开口311上对电池壳体310的开口311进行遮蔽,凸出部12伸入电池壳体310,对本体11和电池壳体310起到双向限位作用,保证第一覆盖件10和电池壳体310的相对位置精度,提高第一覆盖件10覆盖在电池壳体310的开口311的位置精度,且在第一覆盖件10与电池壳体310定位前,可有效降低第一覆盖件10脱离开口的风险;凸出部12与电池壳体310的内壁间隙配合,有利于保证第一覆盖件10与电池壳体310的拆装便捷性,且避免凸出部12对电池壳体310造成碰刮伤或变形,从而有效保证电池壳体310的生产质量。根据本申请的一些实施例,请参照图2和图7,图7为本申请一些实施例提供的将遮蔽罩罩设在第一覆盖件外周的爆炸示意图;在将第二覆盖件200缠绕在电池壳体310的靠近开口311的一端,使第二覆盖件200覆盖留白区312后,喷涂遮蔽方法还包括:
S3:在第一覆盖件10的外周罩设遮蔽罩20。
遮蔽罩20可以为具有开口端的空心结构,在将第一覆盖件10覆盖在电池壳体310的开口311、第二覆盖件200覆盖在留白区312后,在第一覆盖件10的外周罩设遮蔽罩20,遮蔽罩20的开口端朝向第一覆盖件10将第一覆盖件10罩设在遮蔽罩20内。
遮蔽罩20的形状可以与电池壳体310的形状相同或不同,遮蔽罩20的形状可以与电池壳体310的形状相同或不同,比如,第一覆盖件10的横截面呈矩形,遮蔽罩20可以呈空心的半球形,或者,第一覆盖件10的横截面为矩形,遮蔽罩20同样为一端开口的空心的长方体结构。
将第二覆盖件200覆盖留白区312后,在第一覆盖件10的外周罩设遮蔽罩20,一方面,遮蔽罩20可遮蔽第一覆盖件10与电池壳体310之间的间隙及第二覆盖件200与电池壳体310之间的间隙,进一步减少电池壳体310内部和留白区312的污染,从而进一步提高电池生产质量;另一方面,遮蔽罩20可对第一覆盖件10起到遮蔽保护作用,降低第一覆盖件10受喷涂物料的污染,有效保证第一覆盖件10的重复使用寿命,同时,可避免喷涂物料聚集在第一覆盖件10上或第一覆盖件10与电池壳体310之间,有效保证第一覆盖件10拆装精度,且有效降低第一覆盖件10因尺寸变化而引起电池壳体310变形的风险,从而有效保证电池生产质量。
请继续参照图1至图7并进一步参照图8,图8为本申请一些实施例提供的喷涂遮蔽装置的结构示意图;本申请一些实施例提供了一种喷涂遮蔽装置100,喷涂遮蔽装置100包括第一覆盖件10和遮蔽罩20,第一覆盖件10用于覆盖电池壳体310的开口311;遮蔽罩20被配置为在第一覆盖件10覆盖开口311后罩设在第一覆盖件10的外周。
如前所述,第一覆盖件10用于覆盖在电池单体300的开口311上,以遮蔽电池壳体310的内部,限制喷涂物料经电池壳体310的开口311进入电池壳体310内部。第一覆盖件10的形状可以与电池壳体310的形状相适配,比如,电池壳体310为长方体结构,第一覆盖件10可以为矩形,再如,电池壳体310为圆柱体结构,第一覆盖件10可以为圆形,等等。当然,第一覆盖件10的形状和电池壳体310的形状也可以不适配,比如,电池壳体310为长方体结构,第一覆盖件10为圆形等等。第一覆盖件10的横截面面积可以大于电池壳体310的开口面积,以确保遮蔽的充分性,当然,第一覆盖件10的横截面面积也可以等于电池壳体310的开口面积且形状相同,以与电 池壳体310的开口311适配。
遮蔽罩20可以为具有开口端的空心结构,遮蔽罩20的开口端形状可以与第一覆盖件10的形状相同或不同,可以理解的是,遮蔽罩20的开口面面积大于第一覆盖件10的横截面面积,以便于遮蔽罩20能够将第一覆盖件10罩入其中。遮蔽罩20的整体形状可以呈圆筒结构、半球形结构、六面体结构等等。
可以理解的是,遮蔽罩20和第一覆盖件10可以为一体连接式结构、也可以分体设置。
示例性的,为了方便第一覆盖件10与电池壳体310的拆装作业,降低遮蔽罩20对第一覆盖件10拆装作业形成干涉的风险,遮蔽罩20与第一覆盖件10分体设置。
为了稳定遮蔽罩20与第一覆盖件10的相对位置,以确保遮蔽罩20罩设在第一覆盖件10的外周的稳定性,与第一覆盖件10分体设置的遮蔽罩20可以采用粘接、卡接、螺接、磁吸连接等方式与第一覆盖件10可拆卸连接。
喷涂遮蔽装置包括第一覆盖件10和遮蔽罩20,第一覆盖件10可对电池壳体310的开口311起到遮蔽作用,避免喷涂物料经开口311进入电池壳体310内部而影响电池壳体310的质量;遮蔽罩20可对第一覆盖件10、第一覆盖件10与电池壳体310之间的缝隙等处进行遮蔽,进而进一步降低电池壳体310内部污染的风险,提高电池生产质量;同时,遮蔽罩20可对第一覆盖件10起到遮蔽保护作用,降低第一覆盖件10受喷涂物料的污染,有效保证第一覆盖件10的重复使用寿命,同时,可避免喷涂物料聚集在第一覆盖件10上或第一覆盖件10与电池壳体310之间,有效保证第一覆盖件10拆装精度,且有效降低第一覆盖件10因尺寸变化而引起电池壳体310变形的风险,从而有效保证电池生产质量。
根据本申请的一些实施例,请继续参照图8,第一覆盖件10包括本体11和凸出部12,本体11用于覆盖开口311,本体11包括面向开口311的第一表面111,凸出部12凸出于第一表面111,凸出部12用于经开口311伸入电池壳体310。
具体而言,本体11覆盖在开口311,本体11的外周面可以超出电池壳体310的外周面,也可以不超出电池壳体310的外周面。
凸出部12的形状可以和电池壳体310的开口311适配也可以不适配,比如,开口311形状为矩形,凸出部12的横截面可以同为矩形,当然,凸出部12的横截面也可以为圆形。
凸出部12可以为横截面相等的柱状结构,也可以为横截面渐变的锥形体,也可以为其他不规则的结构。
示例性的,电池壳体310为长方体结构,开口311为矩形,凸出部12为横截面为矩形的柱状结构。
其中,凸出部12可以和电池壳体310过盈配合,使第一覆盖件10卡紧在电池壳体310上,确保第一覆盖件10覆盖开口311的稳定性。当然,凸出部12也可以和电池壳体310间隙配合,凸出部12对本体11和电池壳体310起到限位和导向作用。
覆盖件包括本体11和凸出部12,本体11覆盖在开口311上对电池壳体310的开口311进行遮蔽,凸出部12伸入电池壳体310,凸出部12的设置可对本体11和电池壳体310起到双向限位作用,保证第一覆盖件10和电池壳体310的相对位置精度,提高第一覆盖件10覆盖在电池壳体310的开口311的位置精度,且在第一覆盖件10与壳体定位前,可有效降低第一覆盖件10脱离开口311的风险;并且,凸出部12为将第一覆盖件10覆盖在开口311起到导向作用,将凸出部12插入开口311后,即可使第一覆盖件10覆盖开口311,有效提高了第一覆盖件10覆盖开口311的作业精度,有利于提高电池壳体310的生产效率和质量,从而提高电池生产质量和效率。
根据本申请的一些实施例,凸出部12与电池壳体310的内壁间隙配合。
也就是说,凸出部12伸入开口311后,凸出部12的外周面和电池壳体310的内壁之间具有间隙。
凸出部12与电池壳体310的内壁间隙配合,有利于保证第一覆盖件10与电池壳体310的拆装便捷性,且避免凸出部12对电池壳体310造成碰刮伤或变形,从而有效保证电池壳体310生产质量。
根据本申请的再一些实施例,请参照图9,图9为本申请再一些实施例提供的喷涂遮蔽装置的结构示意图;遮蔽罩20设置有第一磁吸件30,第一覆盖件10设置有与第一磁吸件30对应的第二磁吸件40,遮蔽罩20和第一覆盖件10通过第一磁吸件30和第二磁吸件40可拆卸连接。
具体而言,第一磁吸件30和第二磁吸件40中的一者可以为磁性件,另一者为导磁件。
示例性的,第一磁吸件30为磁性件,比如磁铁,第二磁吸件40为导磁件,比如能够与磁铁相互吸附的铁质件。
可以理解的是,第一磁吸件30和第二磁吸件40可以以任意一种方式分别设置于遮蔽罩20和第一覆盖件10的任意位置,只要满足遮蔽罩20和第一覆盖件10通过第一磁吸件30和第二磁吸件40磁吸连接后,遮蔽罩20罩设在第一覆盖件10的外周即可。
遮蔽罩20和第一覆盖件10通过第一磁吸件30和第二磁吸件40可拆卸连接,便于遮蔽罩20和第一覆盖件10的拆装连接,遮蔽罩20通过磁吸连接在第一覆盖件10并罩设在第一覆盖件10上,可有效保证遮蔽罩20对第一覆盖件10和电池壳体310的遮蔽效果的稳定性;且遮蔽罩20通过磁吸的方式连接至第一覆盖件10,可避免在拆装遮蔽罩20过程中对第一覆盖件10过多施力,从而有效保证第一覆盖件10的覆盖、遮蔽精度;并且,在电池壳体310喷涂结束后,可便捷的拆除遮蔽罩20,避免对第一覆盖件10和电池壳体310的分离作业造成干涉。
根据本申请的一些实施例,请继续参照图9,并进一步参照图10至图12,图10为本申请一些实施例提供的喷涂遮蔽装置与电池壳体配合的结构爆炸图;图11为本申请一些实施例提供的喷涂遮蔽装置与电池壳体配合的局部主视剖面图;图12为图11所示的A部分的局部放大图。遮蔽罩20包括顶壁21和侧壁22,侧壁22围设于顶壁21的周围,侧壁22用于覆盖第一覆盖件10的外周面,顶壁21用于覆盖第一覆盖件10的背离开口311的表面,第一磁吸件30设置于顶壁21。
具体而言,将遮蔽罩20罩设在第一覆盖件10上时,顶壁21与第一覆盖件10相对,以覆盖第一覆盖件10的背离开口311的表面,侧壁22围绕在第一覆盖件10的外周面。
第一磁吸件30可以设置于遮蔽罩20内位于第一覆盖件10与顶壁21之间,也可以嵌设于顶壁21内,甚至可以设置于顶壁21背离第一覆盖件10的表面,只要第一磁吸件30能够与第二磁吸件40产生磁吸效果即可。
示例性的,如图11所示,第一磁吸件30容置于遮蔽罩20内且设置于顶壁21的面向第一覆盖件10的表面。
第一磁吸件30设置于遮蔽罩20的顶壁21,使得遮蔽罩20能够尽可能的靠近并罩设在第一覆盖件10的外周,以有效保证将第一覆盖件10尽可能纳入遮蔽罩20的遮蔽范围内,从而有效保证遮蔽罩20对第一覆盖件10的遮蔽效果。
根据本申请的一些实施例,请继续参照图10至图12,喷涂遮蔽装置100还包括连接杆50,遮蔽罩20设有安装孔211,连接杆50的一端穿设于安装孔211与第一 磁吸件30连接。
连接杆50可以是圆柱杆状、长方体杆状等结构,本实施例不对连接杆50的形状进行唯一性限定。
基于“遮蔽罩20包括顶壁21和侧壁22”的实施形式,安装孔211可以设置于顶壁21且贯穿顶壁21。
连接杆50的一端穿设于安装孔211与第一磁吸件30可以固定连接,也可以通过卡接、螺接等方式可拆卸连接。
连接杆50与设置在遮蔽罩20内的第一磁吸件30连接,使得连接杆50与遮蔽罩20连接为一体结构,方便遮蔽罩20的拆装操作,且便于通过连接杆50将与遮蔽罩20连接的第一覆盖件10和电池壳体310连接至喷涂挂架或其他喷涂定位设备。
根据本申请的一些实施例,第一磁吸件30具有螺纹通孔31,连接杆50的一端穿设于螺纹通孔31与第一磁吸件30螺纹连接。
可以理解的是,安装孔211和螺纹通孔31可以同轴设置,连接杆50的一端穿过遮蔽罩20的安装孔211伸入遮蔽罩20内的第一磁吸件30的螺纹通孔31,最终与第一磁吸件30螺纹连接。
连接杆与第一磁吸件30螺纹连接,方便拆装,且有效保证连接杆50的连接稳定性。且相较于连接杆50直接与遮蔽罩20螺纹连接的方式,第一磁吸件30可提供轴向尺寸较大的螺纹孔,从而有效保证连接杆50的螺接面积,进而有利于保证连接杆50的连接稳定性。
根据本申请的一些实施例,连接杆50为中空杆,第一覆盖件10设有通孔112,连接杆50的内腔与电池壳体310的内腔通过通孔112连通。
可以理解的是,连接杆50与第一磁吸件30连接的一端可以为敞口结构,连接杆50的端部敞口与其自身的内腔连通,同时,连接杆50的内腔与第一覆盖件10的通孔112通过连接杆50的端部敞口连通。
基于“第一磁吸件30设有螺纹通孔31”的实施形式,连接杆50的端部可直接贯穿螺纹通孔31而抵在第一覆盖件10上与第一覆盖件10上的通孔112连通,连接杆50的端部也可以不超出第一磁吸件30的轮廓,连接件的内腔和通孔112通过螺纹通孔31连通。
其中,基于“第一覆盖件10包括本体11和凸出部12”的实施形式,通孔112可以设置于本体11且贯穿本体11和凸出部12。
连接杆50的内腔与电池壳体310的内腔通过第一覆盖件10上的通孔112连通,第一覆盖件10的通孔112和连接杆50的中空结构的设计,可对电池壳体310内在喷涂、固化过程中产生的热胀冷缩气体进行及时排放,从而有效保证电池壳体310在喷涂工艺中的结构稳定性,有利于进一步提高电池壳体310的生产良率,进而提高电池的生产质量。
根据本申请的一些实施例,连接杆50和第一覆盖件10均为导电件,且连接杆50和第一覆盖件10电导通。
具体而言,连接杆50和第一覆盖件10均采用导电性能好的材质,比如,连接杆50和第一覆盖件10均为金属件,连接杆50和第一覆盖件10的材质可选用铁、铝、合金等。
连接杆50可以与第一覆盖件10直接接触形成电导通,也可以连接杆50和第一磁吸件30接触,第一磁吸件30和第一覆盖件10直接接触,从而使得连接杆50和第一覆盖件10电导通。
示例性的,连接杆50和第一磁吸件30直接接触,第一磁吸件30和第一覆盖 件10直接接触,连接杆50、第一磁吸件30、第一覆盖件10电导通。
连接杆和第一覆盖件10均为导电件且电导通,以便于采用静电喷涂工艺对电池壳体310进行喷涂时,将电池壳体310上附着的电荷及时导离电池壳体310,有效保证电池壳体310喷涂的安全性和喷涂稳定性。
根据本申请的一些实施例,请继续参照图10至图12,喷涂遮蔽装置100还包括套管60,套管60套设于连接杆50。
套管60可以活动套设于连接杆50上,套管60也可以与连接杆50的相对位置固定。连接杆50的背离遮蔽罩20的一端可以超出套管60的端部也可以不超出套管60的端部。
套管60的内腔可以与连接杆50的外周的形状相同、尺寸适配,套管60的内腔也可以与连接杆50的外周的形状不同。
示例性的,套管60和连接杆50形状相同,套管60活动套设于连接杆50的外周,套管60的一端与遮蔽罩20抵接,另一端略短于连接杆50的另一端,以便于通过连接杆50将遮蔽罩20和第一覆盖件10连接至喷涂工位或喷涂挂架上。
在另一些实施例中,套管60与连接杆50过盈配合,套管60与连接管的相对位置固定,套管60的一端与遮蔽罩20抵接,套管60的另一端可以与连接杆50的另一端平齐或超出连接杆50的另一端,以尽可能的使套管60覆盖连接杆50的杆身。
其中,套管60可以采用金属材质管、绝缘材质管等等。
示例性的,套管60可以采用绝缘材质制成,基于“连接杆50和第一覆盖件10均为导电件”的实施形式,套管60采用绝缘材质制成,可对连接杆50起到绝缘防护作用,有效保证电池壳体310喷涂作业的安全性。
在连接杆50上套设套管60,套管60对连接杆50起到喷涂遮蔽作用,避免喷涂物料污染连接杆50而影响连接杆50的使用寿命。
根据本申请的一些实施例,套管60和遮蔽罩20的材质为铁氟龙。
铁氟龙指聚四氟乙烯,聚四氟乙烯(Polytetrafluoroethylene,简写为PTFE),是一种以四氟乙烯作为单体聚合制得的高分子聚合物。
套管60和遮蔽罩20的材质均为铁氟龙,一方面,铁氟龙的摩擦系数极低,电池壳体310的绝缘喷涂物料在铁氟龙上的附着性差,喷涂在套管60和遮蔽罩20上的喷涂物料便于清洁,从而便于套管60和遮蔽罩20重复使用;另一方面,套管60和遮蔽罩20采用铁氟龙材质,则套管60和遮蔽罩20具有较好的绝缘性能,从而有效保证电池壳体310喷涂作业的安全性。再者,铁氟龙的耐高温性突出,不易产生高温变形,从而进一步有效保证连接杆50和遮蔽罩20的重复使用寿命。
请参照图8至图12,本申请一些实施例提供一种喷涂遮蔽装置100,喷涂遮蔽装置100包括第一覆盖件10、遮蔽罩20、连接杆50、套管60,第一覆盖件10用于覆盖电池壳体310的开口311;遮蔽罩20被配置为在第一覆盖件10覆盖开口311后罩设在第一覆盖件10的外周。
第一覆盖件10包括本体11和凸出部12,本体11用于覆盖开口311,本体11包括面向开口311的第一表面111,凸出部12凸出于第一表面111,凸出部12用于经开口311伸入电池壳体310,凸出部12与电池壳体310的内壁间隙配合,本体11的外周面和电池壳体310的外周面通过胶带粘接。
遮蔽罩20包括顶壁21和侧壁22,侧壁22围设于顶壁21的周围,侧壁22用于覆盖第一覆盖件10的外周面,顶壁21用于覆盖第一覆盖件10的背离开口311的表面。
遮蔽罩20设置有第一磁吸件30,第一覆盖件10设置有与第一磁吸件30对应 的第二磁吸件40,遮蔽罩20和第一覆盖件10通过第一磁吸件30和第二磁吸件40可拆卸连接,第一磁吸件30容置于遮蔽罩20内且设置于顶壁21,第二磁吸件40嵌设于本体11的背离开口311的表面。其中,第一磁吸件30为导磁到电不锈铁,第二磁吸件40为磁铁。
遮蔽罩20设有安装孔211,第一磁吸件30具有螺纹通孔31,连接杆50的一端穿过安装孔211并穿设于螺纹通孔31与第一磁吸件30螺纹连接。
同时,连接杆50为中空结构,第一覆盖件10上设有贯穿本体11和凸出部12的通孔112,将遮蔽罩20罩设在第一覆盖件10上后,第一磁吸件30与本体11的背离开口311的表面贴合,螺纹通孔31与通孔112位置对应,连接杆50的内腔与电池壳体310的内腔通过通孔112和螺纹通孔31连通。并且,连接杆50和第一覆盖件10均为导电件。
套管60活动套设在连接杆50上,套管60和遮蔽罩20的材质均为铁氟龙。
在一些实施例中,为了方便连接杆50的拆装和连接杆50的喷涂定位,连接杆50的另一端可拆卸连接于基座70,具体而言,连接杆50和基座70通过限位结构可拆卸连接,基座70包括底板71、与底板71相对设置的限位板72以及连接底板71和限位板72的连接板73,底板71、连接板73和限位板72合围形成限位槽75,限位结构包括限位块80,限位块80插设于限位槽75内,连接杆50的背离遮蔽罩20的一端与限位块80的朝向连接板73的表面连接。同时,连接板73上设置有供连接杆50穿过的避让口74,该避让口74延伸至限位板72的背离连接板73的一端的边缘。这样,将限位块80固定于连接杆50的背离遮蔽罩20的一端,将限位块80插入限位槽75即可将连接杆50卡接在基座70上。其中,限位块80也可以设置螺纹通孔31,连接杆50的外周设置外螺纹,连接杆50和限位块80可以螺纹连接。在实际喷涂应用中,基座70可以通过焊接、螺接等方式固定于喷涂输送线、喷涂工位、或喷涂挂架上。
需要说明的是,在不冲突的情况下,本申请中的实施例中的特征可以相互结合。虽然已经参考优选实施例对本申请进行了描述,但在不脱离本申请的范围的情况下,可以对其进行各种改进并且可以用等效物替换其中的部件。尤其是,只要不存在结构冲突,各个实施例中所提到的各项技术特征均可以任意方式组合起来。本申请并不局限于文中公开的特定实施例,而是包括落入权利要求的范围内的所有技术方案。

Claims (17)

  1. 一种喷涂遮蔽方法,用于遮蔽电池壳体的开口和留白区,靠近所述开口一端的所述壳体的外周面形成所述留白区,所述喷涂遮蔽方法包括:
    将第一覆盖件覆盖在所述开口上;
    将第二覆盖件围绕在所述电池壳体的靠近所述开口的一端,使所述第二覆盖件覆盖所述留白区。
  2. 根据权利要求1所述的喷涂遮蔽方法,其中,所述将第二覆盖件围绕在所述电池壳体的靠近所述开口的一端,使所述第二覆盖件覆盖所述留白区,包括:
    使所述第二覆盖件同时覆盖所述第一覆盖件的外周面的至少一部分和所述留白区,通过所述第二覆盖件连接所述电池壳体和所述第一覆盖件。
  3. 根据权利要求2所述的喷涂遮蔽方法,其中,所述第二覆盖件为胶带,所述将第二覆盖件围绕在所述电池壳体的靠近所述开口的一端,使所述第二覆盖件覆盖所述留白区,包括:
    使所述胶带同时覆盖所述第一覆盖件的外周面的至少一部分和所述留白区,通过所述胶带连接所述电池壳体和所述第一覆盖件。
  4. 根据权利要求3所述的喷涂遮蔽方法,其中,所述胶带的宽度为L,所述胶带与所述第一覆盖件的连接区的宽度为L1,满足,0.5≤L1/L≤0.7。
  5. 根据权利要求1-4中任一项所述的喷涂遮蔽方法,其中,所述留白区的宽度为L2,满足,4mm≤L2≤6.25mm。
  6. 根据权利要求1-5中任一项所述的喷涂遮蔽方法,其中,所述第一覆盖件包括本体和凸出部,所述本体包括面向所述开口的第一表面,所述凸出部凸出于所述第一表面;
    所述将第一覆盖件覆盖在所述开口上,包括:将所述本体覆盖在所述开口上,使所述凸出部经所述开口伸入所述电池壳体,并使所述凸出部与所述电池壳体间隙配合。
  7. 根据权利要求1-6中任一项所述的喷涂遮蔽方法,其中,在所述将第二覆盖件围绕在所述电池壳体的靠近所述开口的一端,使所述第二覆盖件覆盖所述留白区后,所述喷涂遮蔽方法还包括:
    在所述第一覆盖件的外周罩设遮蔽罩。
  8. 一种喷涂遮蔽装置,包括:
    覆盖件,用于覆盖电池壳体的开口;
    遮蔽罩,被配置为在所述覆盖件覆盖所述开口后罩设在所述覆盖件的外周。
  9. 根据权利要求8所述的喷涂遮蔽装置,其中,所述覆盖件包括本体和凸出部,所述本体用于覆盖所述开口,所述本体包括面向所述开口的第一表面,所述凸出部凸出于所述第一表面,所述凸出部用于经所述开口伸入所述电池壳体。
  10. 根据权利要求8或9所述的喷涂遮蔽装置,其中,所述遮蔽罩设置有第一磁吸件,所述覆盖件设置有与所述第一磁吸件对应的第二磁吸件,所述遮蔽罩和所述覆盖件通过所述第一磁吸件和所述第二磁吸件可拆卸连接。
  11. 根据权利要求10所述的喷涂遮蔽装置,其中,所述遮蔽罩包括顶壁和侧壁,所述侧壁围设于所述顶壁的周围,所述侧壁用于覆盖所述覆盖件的外周面,所述顶壁用于覆盖所述覆盖件的背离所述开口的表面,所述第一磁吸件设置于所述顶壁。
  12. 根据权利要求10或11所述的喷涂遮蔽装置,其中,所述喷涂遮蔽装置还包括 连接杆,所述遮蔽罩设有安装孔,所述连接杆的一端穿设于所述安装孔与所述第一磁吸件连接。
  13. 根据权利要求12所述的喷涂遮蔽装置,其中,所述第一磁吸件具有螺纹通孔,所述连接杆的一端穿设于所述螺纹通孔与所述第一磁吸件螺纹连接。
  14. 根据权利要求12或13所述的喷涂遮蔽装置,其中,所述连接杆为中空杆,所述覆盖件设有通孔,所述连接杆的内腔与所述电池壳体的内腔通过所述通孔连通。
  15. 根据权利要求12-14中任一项所述的喷涂遮蔽装置,其中,所述连接杆和所述覆盖件均为导电件,且所述连接杆和所述覆盖件电导通。
  16. 根据权利要求12-15中任一项所述的喷涂遮蔽装置,其中,所述喷涂遮蔽装置还包括:
    套管,套设于所述连接杆。
  17. 根据权利要求16所述的喷涂遮蔽装置,其中,所述套管和所述遮蔽罩的材质为铁氟龙。
PCT/CN2022/113910 2022-08-22 2022-08-22 喷涂遮蔽方法及喷涂遮蔽装置 WO2024040381A1 (zh)

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US5242712A (en) * 1991-09-09 1993-09-07 Miller Walter K Method and apparatus for masking a window in a window frame to be spray painted
CN103102822A (zh) * 2011-11-15 2013-05-15 上海杰事杰新材料(集团)股份有限公司 一种高温喷涂遮蔽用压敏胶带及其制备方法
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CN214975024U (zh) * 2021-03-09 2021-12-03 湖北浩瀚佰金光电科技有限公司 一种喷涂遮蔽治具
CN215997227U (zh) * 2021-10-26 2022-03-11 宁德时代新能源科技股份有限公司 喷涂辅助装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5242712A (en) * 1991-09-09 1993-09-07 Miller Walter K Method and apparatus for masking a window in a window frame to be spray painted
CN103102822A (zh) * 2011-11-15 2013-05-15 上海杰事杰新材料(集团)股份有限公司 一种高温喷涂遮蔽用压敏胶带及其制备方法
CN214975023U (zh) * 2021-03-09 2021-12-03 湖北浩瀚佰金光电科技有限公司 一种用于喷涂工艺中的孔遮蔽堵头及遮蔽工装
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