An automatic marking device and method for an aluminum shell of a power battery structural member

Abstract

The application discloses a kind of automatic marking device and method of power battery structural member aluminum shell, wherein automatic marking device of power battery structural member aluminum shell includes: workbench, circumferential limiting component being set on workbench, feed assembly being set on workbench, inner support mechanism, outer clamping mechanism and marking assembly, circumferential limiting component is suitable for receiving aluminum shell, and the circumferential of aluminum shell is positioned, feed assembly includes the mounting round seat being slidably arranged on workbench along the axis direction of aluminum shell on circumferential limiting component, and the mounting round seat is coaxially arranged with the aluminum shell, inner support mechanism includes a plurality of inner support members being slidably arranged on mounting round seat along the radial direction of mounting round seat, and the inner support members are equidistantly spaced along the circumferential of mounting round seat, and the mounting round seat is suitable for being moved to inner support member to extend into aluminum shell, when inner support member is located in aluminum shell, inner support member is suitable for being acted on to support the inner wall of aluminum shell, and the consistency of marking quality is improved by limiting aluminum shell through inner and outer clamping.

Description

Technical Field

[0001] This invention relates to the field of aluminum shell surface pressing technology, specifically to an automatic scoring device and method for aluminum shells of power battery structural components. Background Technology

[0002] Currently, the outer wall of the aluminum casing of cylindrical power batteries needs to be uniformly stamped with multiple explosion-proof grooves in the circumference. The residual wall thickness at the bottom of the grooves directly determines the pressure relief and explosion pressure when the cell experiences thermal runaway. The consistency of the dimensions of each groove on the same casing is a core indicator to ensure the safety performance of the battery.

[0003] A search revealed a patent with publication number CN116511827A that discloses a scoring mechanism for aluminum shells of lithium-ion power battery structural components. This patent uses an internal expansion mechanism to support the inner wall of the aluminum shell, and then sets up six scoring components to simultaneously score the supported aluminum shell. However, this patent only configures a single internal support for positioning, without a corresponding segmented external clamping structure. During the stamping process, the pressure head squeezes the cylinder wall inward, causing plastic deformation. After the aluminum material is squeezed, the scoring position of the shell has no external rigid constraint, and the cylinder wall may deform, affecting the consistency of the scoring quality on the outer wall. This results in large deviations in the depth of multiple scoring grooves and the residual wall thickness, and serious dispersion in the pressure relief opening pressure of each scoring. In mass production, this can easily lead to safety hazards such as some scoring residual thickness being too thin, premature pressure relief and leakage due to slight battery expansion, or some scoring residual thickness being too large, resulting in the inability to relieve pressure in time during thermal runaway. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide an automatic scoring device and method for aluminum shell of power battery structural components, which improves the consistency of scoring quality by restricting the aluminum shell through internal and external clamping.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is: an automatic scoring device for aluminum shell of power battery structural components, comprising:

[0006] Workbench;

[0007] A circumferential limiting component is provided on the workbench, the circumferential limiting component being adapted to receive the aluminum shell and limit the circumferential movement of the aluminum shell;

[0008] The feed assembly is provided on the worktable, and the feed assembly includes a mounting round seat that is slidably disposed on the worktable along the axial direction of the aluminum shell located on the circumferential limiting assembly, and the mounting round seat is coaxially disposed with the aluminum shell.

[0009] An inner support mechanism includes a plurality of inner support members that are equidistantly arranged along the circumference of the mounting base and slidably disposed on the mounting base along the radial direction of the mounting base. The mounting base is adapted to be moved so that the inner support members extend into the aluminum shell. When the inner support members are located inside the aluminum shell, the inner support members are adapted to be moved to support the inner wall of the aluminum shell.

[0010] An external clamping mechanism includes a support plate disposed on the mounting base corresponding to the inner support member and an external clamping member slidably disposed on the support plate along the radial direction of the mounting base. The external clamping member is adapted to be moved to abut against the aluminum shell to cooperate with the inner support member to clamp the aluminum shell.

[0011] The scoring assembly includes a pusher disposed on the support plate and a pressure head slidably disposed radially within the corresponding outer clamping member along the mounting base. The outer clamping member has a pressure groove. The pusher is adapted to move the pressure head to partially extend outside the corresponding pressure groove in order to perform extrusion scoring on the aluminum shell at the location corresponding to the pressure groove.

[0012] Furthermore, in order to support the interior of the aluminum shell, the internal support mechanism also includes a driven inclined slider fixedly mounted on the internal support member, an inclined slider drive cylinder mounted on the mounting round seat, and an active inclined slider mounted on the telescopic end of the inclined slider drive cylinder and corresponding to the driven inclined slider.

[0013] The active inclined slider and the corresponding driven inclined slider are arranged in radial inclined contact. When the inclined slider drive cylinder drives the active inclined slider to move axially, the driven inclined slider is driven to move radially through the inclined contact between the active and driven inclined sliders, thereby further driving the inner support member to move radially.

[0014] Furthermore, in order to better limit the deformation of the aluminum shell during the scoring process, the support plate is provided with a movable chamber for the outer clamping member to move radially along the mounting base, and the movable chamber corresponds to the position of the inner support member;

[0015] The external clamping mechanism further includes a clamping drive component disposed on the corresponding support plate and a positioning component that is radially slidably disposed in the movable cavity on the corresponding support plate along the mounting base. A docking mechanism is provided between the external clamping component and the positioning component. The positioning component docks with the external clamping component located in the movable cavity through the docking mechanism. The clamping drive component is connected to the positioning component to drive the positioning component to move closer to or away from the aluminum shell, thereby driving the corresponding external clamping component to clamp or release the aluminum shell.

[0016] Furthermore, the pushing member is disposed on the positioning member corresponding to the support plate, and the pushing member is adapted to move the pressure head in the outer clamping member when the outer clamping member located in the moving chamber docks with the positioning member;

[0017] The telescopic end face of the pusher and the pressure head are respectively provided with a first magnetic attraction part, and when the telescopic end of the pusher contacts the pressure head, they are connected through the two first magnetic attraction parts;

[0018] The inner wall of the outer clamping member and the pressure head are respectively provided with a second magnetic attraction part, and when the outer clamping member contacts the pressure head, they are connected through the two second magnetic attraction parts.

[0019] Furthermore, in order to facilitate flexible switching of the pressure head as needed, the support plate is provided with at least two of the aforementioned external clamping members, and the support plate is slidably provided with a movable seat corresponding to the external clamping member along the axial direction of the mounting round seat. The external clamping member is slidably provided on the corresponding movable seat along the moving direction of the positioning member in the moving chamber.

[0020] The support plate has a moving channel that communicates with the moving chamber and allows the outer clamping member to slide along the axial direction of the mounting base. When the outer clamping member moves in the moving channel to the position of the moving chamber, it docks with the positioning member. When the positioning member is actuated and moves radially along the mounting base in the moving chamber, it drives the docked outer clamping member to move synchronously on the corresponding moving base. When the outer clamping member moves in the moving chamber to the moving channel, it disconnects from the positioning member.

[0021] Furthermore, the support plate is provided with a switching drive component, which is adapted to move all the movable seats linearly along the axial direction of the mounting round seat on the corresponding support plate, thereby driving the outer clamping member corresponding to one of the movable seats to be located in the movable chamber.

[0022] Furthermore, the dimensions of the pressure grooves in the different external clamping components are adapted to the dimensions of the corresponding pressure heads.

[0023] Furthermore, to improve the positional accuracy of the scoring, the automatic scoring device for the aluminum shell of the power battery structural component also includes an axial limiting component, which includes:

[0024] An axial fixing plate is installed on the worktable;

[0025] An axially movable ring that is slidably disposed on the worktable along the axial direction of the mounting base;

[0026] An axial drive component is installed on the workbench and connected to the axial moving ring to drive the axial moving ring to move linearly. The axial drive component is used to drive the axial moving ring to move so that it contacts one end face of the aluminum shell, and then pushes the aluminum shell so that the other end face of the aluminum shell abuts against the axial fixing plate.

[0027] Furthermore, to improve production efficiency, the automatic scoring device for the aluminum shell of power battery structural components also includes a feeding assembly, which includes:

[0028] A material bin for storing multiple aluminum shells is set on the workbench, and the multiple aluminum shells are arranged individually along the vertical direction of the material bin;

[0029] A feeding mechanism is provided on the hopper, which is adapted to push the aluminum shell located at the bottom of the hopper to the circumferential limiting component.

[0030] This invention also discloses an automatic scoring method for the aluminum shell of a power battery structural component, which uses the aforementioned automatic scoring device for the aluminum shell of a power battery structural component and includes the following steps:

[0031] S1. Place the aluminum shell at the circumferential limiting component and limit the circumferential position of the aluminum shell through the circumferential limiting component;

[0032] S2. The action mounting round seat moves toward the aluminum shell until the inner support extends into the aluminum shell to a specified depth.

[0033] S3. Multiple internal support components move synchronously to support the inner wall of the aluminum shell.

[0034] S4. Multiple external clamping components move synchronously to abut against the outer wall of the aluminum shell portion that contacts the inner support component, and cooperate with the corresponding inner support component to clamp the aluminum shell.

[0035] S5. The pusher moves the pressure head to partially extend out of the pressure groove corresponding to the outer clamping member, and extrusion marks are made on the aluminum shell at the position corresponding to the pressure groove.

[0036] By adopting the above technical solution, the present invention has the following beneficial effects:

[0037] The aluminum shell is circumferentially limited by the circumferential limiting component. The actuating mounting round seat moves a certain distance towards the aluminum shell in the circumferential limiting component, so that the inner support is inside the aluminum shell and the outer clamping component is outside the aluminum shell. Multiple inner support components move synchronously to support the inner wall of the aluminum shell, and multiple outer clamping components move to abut against the outer wall of the aluminum shell and cooperate with the inner support components to clamp the aluminum shell. Then, the corresponding pressure head extends out of the pressure groove through the pushing component to squeeze and score the outer wall of the aluminum shell corresponding to the pressure groove position. By setting the aluminum shell to be clamped inside and outside during scoring, the phenomenon of possible deformation of the aluminum shell during scoring is limited, thereby improving the scoring quality. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0039] Figure 2 This is a schematic diagram showing the placement of the aluminum shell according to the present invention;

[0040] Figure 3 This is a schematic diagram showing the positions of the inner support member, the outer clamping member, and the aluminum shell of the present invention;

[0041] Figure 4 This is a schematic diagram of the internal structure of the support plate of the present invention;

[0042] Figure 5 This is a schematic diagram of the internal structure of the external clamping member of the present invention;

[0043] Figure 6 This is a schematic diagram of the internal support structure of the present invention. Figure 1 ;

[0044] Figure 7 This is a schematic diagram of the internal support structure of the present invention. Figure 2 ;

[0045] Figure 8 This is a schematic diagram showing the position of the movable chamber of the present invention;

[0046] Figure 9 This is a schematic diagram of the positioning component structure of the present invention;

[0047] Figure 10 This is a schematic diagram of the docking block structure of the present invention;

[0048] Figure 11 This is a schematic diagram showing the position of the first magnetic suction part of the present invention;

[0049] Figure 12 This is a schematic diagram showing the position of the second magnetic suction part of the present invention;

[0050] Figure 13 This is a schematic diagram of the movable seat structure of the present invention;

[0051] Figure 14 This is a schematic diagram of the switching drive component structure of the present invention;

[0052] Figure 15 This is a schematic diagram of the feeding assembly structure of the present invention. Figure 1 ;

[0053] Figure 16 This is a schematic diagram of the feeding assembly structure of the present invention. Figure 2 ;

[0054] In the diagram: 1. Workbench;

[0055] 2. Circumferential limit assembly; 21. Upper limit component; 22. Lower limit component; 23. Circumferential limit drive cylinder;

[0056] 3. Feed assembly; 31. Mounting round seat; 32. Feed motor; 33. First threaded rod; 34. Connecting rod;

[0057] 4. Internal support mechanism; 41. Internal support component; 42. Driven inclined slider; 43. Active inclined slider; 44. Inclined slider drive cylinder;

[0058] 5. External clamping mechanism; 51. Support plate; 52. External clamping component; 53. Moving chamber; 54. Clamping drive component; 55. Positioning component; 56. Clamping motor; 57. Second threaded rod; 58. Connecting groove; 59. Connecting block;

[0059] 6. Press head; 61. Pushing component; 62. Pressing groove; 63. First magnetic suction part; 64. Second magnetic suction part; 65. Moving seat; 66. Switching drive component; 67. Switching motor; 68. Third threaded rod;

[0060] 7. Axial fixing plate; 71. Axial moving ring; 72. Axial motor; 73. Fourth threaded rod;

[0061] 8. Material bin; 81. Feeding mechanism; 82. Feeding motor; 83. Fifth threaded rod; 84. Feeding plate; 85. Material stop drive cylinder; 86. Material stop component;

[0062] 9. Feed port; 91. First limiting component; 92. Second limiting component; 93. Bidirectional screw; 94. Bidirectional moving motor. Detailed Implementation

[0063] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0064] Example 1: As Figure 1-6 As shown, an automatic scoring device for the aluminum shell of a power battery structural component includes:

[0065] Workbench 1;

[0066] A circumferential limiting component 2 is provided on the workbench 1. The circumferential limiting component 2 is suitable for receiving the aluminum shell and limiting the circumferential movement of the aluminum shell.

[0067] The feed assembly 3 is provided on the worktable 1. The feed assembly 3 includes a mounting round seat 31 that is slidably provided on the worktable 1 along the axial direction of the aluminum shell located on the circumferential limiting assembly 2. The mounting round seat 31 is coaxially provided with the aluminum shell.

[0068] The inner support mechanism 4 includes a plurality of inner support members 41 that are equidistantly arranged along the circumference of the mounting round seat 31 and slidably disposed on the mounting round seat 31 along the radial direction of the mounting round seat 31. The mounting round seat 31 is adapted to be moved so that the inner support members 41 extend into the aluminum shell. When the inner support members 41 are located inside the aluminum shell, the inner support members 41 are adapted to be moved to support the inner wall of the aluminum shell.

[0069] The outer clamping mechanism 5 includes a support plate 51 corresponding to the inner support member 41 and an outer clamping member 52 that is radially slidably disposed on the support plate 51 along the mounting round seat 31. The outer clamping member 52 is adapted to be moved to abut against the aluminum shell to cooperate with the corresponding inner support member 41 to clamp the aluminum shell.

[0070] The scoring assembly includes a pusher 61 disposed on a support plate 51 and a pressure head 6 that is radially slidably disposed within a corresponding outer clamping member 52 along a mounting base 31. The outer clamping member 52 has a pressure groove 62. The pusher 61 is adapted to move the pressure head 6 to partially extend outside the corresponding pressure groove 62 to perform extrusion scoring on the aluminum shell at the location corresponding to the pressure groove 62.

[0071] Specifically, such as Figure 6 As shown, the mounting base 31 is provided with a connecting rod 34 corresponding to the inner support member 41, and the inner support member 41 is slidably mounted on the corresponding connecting rod 34.

[0072] In this embodiment, the aluminum shell is circumferentially limited by the circumferential limiting component 2. The actuating mounting round base 31 moves a certain distance towards the aluminum shell in the circumferential limiting component 2, so that the inner support 41 is located inside the aluminum shell and the outer clamping component 52 is located outside the aluminum shell. Multiple inner support components 41 move synchronously to support the inner wall of the aluminum shell, and multiple outer clamping components 52 move to abut against the outer wall of the aluminum shell and cooperate with the inner support components 41 to clamp the aluminum shell. Then, the pusher 61 actuates the corresponding pressure head 6 part to extend out of the pressure groove 62 to squeeze and score the part of the outer wall of the aluminum shell corresponding to the position of the pressure groove 62. By setting the inner and outer clamping of the aluminum shell during scoring, the phenomenon that the aluminum shell may deform during scoring is limited, thereby improving the scoring quality.

[0073] Specifically, such as Figure 1-2As shown, the circumferential limiting assembly 2 includes an upper limit member 21 and a lower limit member 22 disposed on the worktable 1, as well as a circumferential limiting drive cylinder 23. The lower limit member 22 is adapted to receive the aluminum shell, which is placed between the upper limit member 21 and the lower limit member 22. The circumferential limiting drive cylinder 23 is connected to the upper limit member 21 to drive the upper limit member 21 to move to the lower limit member 22, thereby cooperating with the lower limit member 22 to limit the circumferential movement of the aluminum shell.

[0074] Specifically, the feed assembly 3 also includes a feed drive, which includes a feed motor 32 and a first lead screw and nut assembly. The first lead screw and nut assembly includes a first threaded rod 33 rotatably mounted on the worktable 1 and a first nut that is fitted onto the first threaded rod 33. The feed motor 32 is mounted on the worktable 1, and the output end of the feed motor 32 is coaxially connected to the first threaded rod 33. The mounting seat 31 is mounted on the first nut. The feed motor 32 is adapted to rotate the first threaded rod 33, thereby driving the mounting seat 31 to move linearly along the axial direction of the first threaded rod 33.

[0075] like Figure 6-7 As shown, the inner support mechanism 4 also includes a driven inclined slider 42 fixedly mounted on the inner support member 41, an inclined slider drive cylinder 44 mounted on the mounting round seat 31, and an active inclined slider 43 mounted on the telescopic end of the inclined slider drive cylinder 44 and corresponding to the driven inclined slider 42.

[0076] The active inclined slider 43 and the corresponding driven inclined slider 42 are arranged in radial inclined contact. When the inclined slider drive cylinder 44 drives the active inclined slider 43 to move axially, the driven inclined slider 42 is driven to move radially through the inclined contact between the active inclined slider 43 and the driven inclined slider 42, thereby further driving the inner support member 41 to move radially.

[0077] In this embodiment, when the inner support member 41 is not extended into the aluminum shell to a specified depth, the inner support member 41 is in its initial position and does not contact the inner wall of the aluminum shell. At this time, the radial distance between the inner support member 41 and the extension end of the inclined slider drive cylinder 44 is the shortest. When the inner support member 41 is extended into the aluminum shell to a specified depth, the inclined slider drive cylinder 44 is activated, controlling its extension end to move away from the circumferential limiting component 2, thereby driving the active inclined slider 43 to move synchronously. Through the cooperation of the inclined surfaces between the active inclined slider 43 and the driven inclined slider 42, the inner support member 41 moves radially away from the extension end of the inclined slider drive cylinder 44. The inner support 41 moves radially away from the telescopic end until it abuts against and supports the inner wall of the aluminum shell. The corresponding outer wall of the aluminum shell is the scoring area. When the scoring work is completed and the inner support 41 needs to exit the aluminum shell, the telescopic end of the actuating inclined slider drive cylinder 44 moves in the reverse direction to the reset position, which drives the inner support 41 to move in the reverse direction to the initial position, releasing the inner support 41 from the inner wall of the aluminum shell. In this state, the inner support 41 is exited from the aluminum shell by the feeding assembly 3. The inclined slider drive mechanism composed of the active inclined slider 43 and the driven inclined slider 42 is existing technology, and its specific structure and working principle will not be described in detail here.

[0078] Specifically, the part of the inner support 41 that abuts against the inner wall of the aluminum shell is an arc-shaped structure that matches the inner wall of the aluminum shell.

[0079] like Figure 8-9 As shown, the support plate 51 is provided with a movable chamber 53 for the outer clamping member 52 to move radially along the mounting round seat 31, and the movable chamber 53 corresponds to the position of the inner support member 41.

[0080] The external clamping mechanism 5 also includes a clamping drive 54 disposed on the corresponding support plate 51 and a positioning member 55 that is radially slidably disposed in the moving chamber 53 on the corresponding support plate 51 along the mounting base 31. A docking mechanism is provided between the external clamping member 52 and the positioning member 55. The positioning member 55 docks with the external clamping member 52 located in the moving chamber 53 through the docking mechanism. The clamping drive 54 is connected to the positioning member 55 to drive the positioning member 55 to move closer to or away from the aluminum shell, thereby driving the corresponding external clamping member 52 to clamp or release the aluminum shell.

[0081] In this embodiment, when the mounting base 31 is moved to the point where the inner support member 41 extends into the aluminum shell to support the inner wall of the aluminum shell at the etched area, the outer clamping member 52 moves synchronously with the mounting base 31 to the position on the outer wall of the aluminum shell at the etched area, corresponding to the position of the corresponding inner support member 41. In this case, the outer clamping member 52 located in the moving chamber 53 docks with the positioning member 55 through the docking mechanism. After docking, the positioning member 55 and the outer clamping member 52 are moved synchronously by the clamping drive member 54, so that the outer clamping member 52 moves to the point where it partially extends out of the support plate 51 and abuts against the outer wall of the aluminum shell at the etched area, and cooperates with the corresponding inner support member 41 to clamp the aluminum shell at the etched area.

[0082] Specifically, the part of the outer clamping member 52 that abuts against the outer wall of the aluminum shell has an arc-shaped structure that matches the outer wall of the aluminum shell. When the outer clamping member 52 cooperates with the inner support member 41 to clamp the etched area of ​​the aluminum shell, it restricts the aluminum shell throughout the entire etching process.

[0083] Specifically, such as Figure 9 , Figure 13 As shown, the clamping drive component 54 includes a second lead screw and nut pair and a clamping motor 56. The second lead screw and nut pair includes a second threaded rod 57 rotatably mounted on the support plate 51 and a second nut mating with the second threaded rod 57. The second nut is connected to the positioning component 55. The clamping motor 56 is mounted on the corresponding support plate 51. The output end of the clamping motor 56 is coaxially connected to the second threaded rod 57. The clamping motor 56 is adapted to rotate the second threaded rod 57, thereby driving the positioning component 55 to move linearly along the axial direction of the second threaded rod 57.

[0084] Specifically, such as Figure 9-10 As shown, the docking mechanism includes: a docking block 59 disposed on the outer clamping member 52 and a docking groove 58 formed on the positioning member 55 to cooperate with the docking block 59. The docking block 59 is inserted into the corresponding docking groove 58, so that the corresponding outer clamping member 52 located in the moving chamber 53 docks with the positioning member 55.

[0085] In this embodiment, when the outer clamping member 52 is located in the moving chamber 53, the docking block 59 on the outer clamping member 52 is inserted into the docking groove 58 of the corresponding positioning member 55, so that the outer clamping member 52 and the positioning member 55 are docked.

[0086] like Figure 11-12 As shown, the pusher 61 is disposed on the positioning member 55 in the corresponding support plate 51. The pusher 61 is adapted to move the pressure head 6 in the outer clamping member 52 when the outer clamping member 52 located in the moving chamber 53 docks with the positioning member 55.

[0087] A first magnetic attraction part 63 is provided on the end face of the telescopic end of the pusher 61 and the pressure head 6 respectively. When the telescopic end of the pusher 61 contacts the pressure head 6, the two first magnetic attraction parts 63 are connected.

[0088] A second magnetic attraction part 64 is provided on the inner wall of the outer clamping member 52 and on the pressure head 6 respectively. When the outer clamping member 52 contacts the pressure head 6, the two second magnetic attraction parts 64 are connected.

[0089] In this embodiment, initially, the end face of the telescopic end of the pusher 61 does not contact the pressure head 6. The pressure head 6 connects with the inner wall of the corresponding outer clamping member 52 via the second magnetic attraction part 64. When the inner support member 41 and the outer clamping member 52 cooperate to clamp the aluminum shell at the etched area, the telescopic end of the pusher 61 moves to pass through the outer clamping member 52 and contact the pressure head 6. It also connects its end face with the pressure head via the first magnetic attraction part 63. After connection, the telescopic end of the pusher 61 drives the pressure head 6 to move towards the aluminum shell until the pressure head 6 connects with the outer clamping member 52. The second magnetic attraction part 64 between the holding members 52 is disconnected and partially extends out of the pressure groove 62 to extrude the aluminum shell to form a groove. After the groove is completed, the pushing member 61 drives the telescopic end and the pressure head 6 to move in the opposite direction until the pressure head 6 and the inner wall of the outer clamping member 52 are connected again through the second magnetic attraction part 64. As the telescopic end of the pushing member 61 continues to move in the opposite direction, under the obstruction of the inner wall of the outer clamping member 52, the telescopic end of the pushing member 61 is disconnected from the pressure head 6, and the end face of the telescopic end of the pushing member 61 returns to a state where it is not in contact with the pressure head 6.

[0090] Example 2: Figure 14 As shown, this embodiment further includes the following structure based on embodiment one: at least two external clamping members 52 are provided on the support plate 51, and a movable seat 65 corresponding to the external clamping member 52 is slidably provided on the support plate 51 along the axial direction of the mounting round seat 31. The external clamping member 52 is slidably provided on the corresponding movable seat 65 along the moving direction of the positioning member 55 in the moving chamber 53.

[0091] The support plate 51 has a moving channel that communicates with the moving chamber 53 and allows the outer clamping member 52 to slide along the axial direction of the mounting base 31. When the outer clamping member 52 moves in the moving channel to the position in the moving chamber 53, it docks with the positioning member 55. When the positioning member 55 is moved radially along the mounting base 31 in the moving chamber 53, it drives the docked outer clamping member 52 to move synchronously on the corresponding moving base 65. When the outer clamping member 52 moves in the moving chamber 53 to the moving channel, it disconnects from the positioning member 55.

[0092] In this embodiment, at least two external clamping members 52 are provided. The pressure heads 6 corresponding to different external clamping members 52 can be of the same size and specification, which is used for quick replacement during the production process to reduce wear of a single pressure head 6 under long-term operation, thus reducing the degradation of the scoring quality. The pressure heads 6 corresponding to different external clamping members 52 can also be of different sizes and specifications. On the same specification aluminum shell, due to different application scenarios or different required pressure relief amounts, it is necessary to replace different pressure heads 6 for scoring work. In order to achieve quick replacement of pressure heads 6 and improve production efficiency, the following settings are made:

[0093] Select the required pressure head 6, and move the corresponding outer clamping member 52 and moving seat 65 along the axial direction of the mounting base 31 from the moving channel to the moving chamber 53. This allows the outer clamping member 52 located in the moving chamber 53 to dock with the positioning member 55 via a docking mechanism. After docking, the clamping drive member 54 drives the positioning member 55 and the docked outer clamping member 52 to move synchronously, causing part of the outer clamping member 52 to extend beyond the support plate 51 and abut against the outer wall of the aluminum shell to cooperate with the inner support member 41 in clamping the aluminum shell. Then, the corresponding push member 61 is activated. The pressure head 6 in the external clamping member 52 scratches the aluminum shell. After scratching, the external clamping member 52 is driven to move in the opposite direction to the reset position by the clamping drive member 54. Then, the pressure head is driven to move in the opposite direction to the reset position by the push member 61, and the telescopic end of the push member 61 is disconnected from the pressure head 6. When it is necessary to replace a different pressure head 6, the external clamping member 52 corresponding to the required pressure head 6 is moved into the moving chamber 53 and docked with the positioning member 55. The external clamping member 52 originally located in the moving chamber 53 is moved into the moving channel and disconnected from the positioning member 55.

[0094] Specifically, the portion of the outer clamp 52 located in the moving channel that abuts against the outer wall of the aluminum shell abuts against the inner wall of the moving channel to restrict the movement of the outer clamp 52 located in the moving channel on the corresponding moving seat 65.

[0095] like Figure 14 As shown, a switching drive component 66 is provided on the support plate 51. The switching drive component 66 is adapted to move all the movable seats 65 linearly along the axial direction of the mounting round seat 31 on the corresponding support plate 51, thereby driving the outer clamping member 52 corresponding to one of the movable seats 65 to be located in the movable chamber 53.

[0096] In this embodiment, the switching drive component 66 can synchronously drive the moving seats 65 corresponding to all the external clamping parts 52 to move linearly along the axial direction of the mounting round seat 31 within the support plate 51, thereby driving any designated external clamping part 52 to be located in the moving chamber 53 and to dock with the positioning part 55 in the moving chamber 53 through the docking mechanism.

[0097] Specifically, such as Figure 14 As shown, the switching drive component 66 includes a third lead screw and nut pair and a switching motor 67. The third lead screw and nut pair includes a third threaded rod 68 rotatably mounted on the support plate 51 and a third nut corresponding to the moving seat 65 and connected to the third threaded rod 68. The third nut is connected to the corresponding moving seat 65. The switching motor 67 is mounted on the support plate 51, and the output end of the switching motor 67 is coaxially connected to the third threaded rod 68. When it is necessary to drive all moving seats 65 to move synchronously to any designated moving seat 65 to the moving chamber 53, the switching motor 67 is started to drive the third threaded rod 68 to rotate, so that all moving seats 65 can move linearly along the axial direction of the third threaded rod 68.

[0098] Furthermore, the dimensions of the pressure grooves 62 in different external clamping parts 52 are adapted to the dimensions of the corresponding pressure heads 6.

[0099] In this embodiment, the pressure grooves 62 on different external clamping members 52 need to match the size specifications of the corresponding pressure head 6 in order to limit the size of the grooves.

[0100] It should be noted that there is a certain gap between the pressure groove 62 on the outer clamping member 52 and the pressure head 6.

[0101] Example 3: Figure 2 As shown, this embodiment further includes the following structure based on Embodiment 1: the automatic scoring device for the aluminum shell of the power battery structural component also includes an axial limiting component, which includes:

[0102] An axial fixing plate 7 is installed on the worktable 1;

[0103] An axially movable ring 71 is slidably disposed on the worktable 1 along the axis of the mounting base 31;

[0104] An axial drive component is installed on the workbench 1 and connected to the axial moving ring 71 to drive the axial moving ring 71 to move linearly. The axial drive component is used to drive the axial moving ring 71 to move so that it contacts one end face of the aluminum shell, and then pushes the aluminum shell so that the other end face of the aluminum shell abuts against the axial fixing plate 7.

[0105] In this embodiment, the aluminum shell placed at the circumferential limiting component 2 is first placed on the lower limiting component 22, while the upper limiting component 21 does not limit the aluminum shell at first. At this time, the axial moving ring 71 is driven by the axial driving component to move to abut against the aluminum shell located on the lower limiting component 22. As the axial moving ring 71 continues to move, it can drive the aluminum shell that abuts against it to move towards the axial fixing plate 7 until the aluminum shell abuts against both the axial fixing plate 7 and the axial moving ring 71. Under this setting, the aluminum shell can be axially limited by the axial moving ring 71 and the axial fixing plate 7. After the axial limitation is completed, the upper limiting plate is moved to cooperate with the lower limiting plate to limit the circumferential limitation of the aluminum shell.

[0106] Furthermore, when the axial drive component moves the axial moving ring 71 and cooperates with the axial fixing plate 7 to axially limit the aluminum shell, the feed component 3 moves the mounting base 31 by the same distance, so that the distance between the axial moving ring 71 and the mounting base 31 is constant. Under this setting, the distance between the end of the aluminum shell near the inner support member 41 and the mounting base 31 can be kept constant after the aluminum shell with different axial lengths is axially limited. When the distance between the aluminum shell and the mounting base 31 is constant, the positional accuracy of the groove on the aluminum shell corresponding to the inner support member 41 being moved to a specified depth into the aluminum shell is more accurate.

[0107] Furthermore, a pressure sensor is provided on the side of the axial fixing plate 7 away from the feed assembly 3. When the aluminum shell is moved to abut against the axial fixing plate 7, the pressure sensor can detect the pressure applied by the aluminum shell to the axial fixing plate 7 in real time. When the applied pressure reaches the set threshold, the axial limit of the aluminum shell is completed. At this time, the pressure sensor sends a signal to the controller, and the controller controls the axial drive component to stop working, thereby controlling the axial moving ring 71 to stop moving. The pressure sensor is not shown in the figure. Its specific structure and working principle are existing technologies and will not be described in detail here.

[0108] Specifically, such as Figure 2 As shown, the axial drive component includes a fourth lead screw and nut pair and an axial motor 72. The fourth lead screw and nut pair includes a fourth threaded rod 73 rotatably mounted on the worktable 1 and a fourth nut that is fitted onto the fourth threaded rod 73. The fourth nut is connected to the axial moving ring 71. The axial motor 72 is mounted on the worktable 1, and the output end of the axial motor 72 is coaxially connected to the fourth threaded rod 73. The axial motor 72 is adapted to rotate the fourth threaded rod 73, thereby driving the axial moving ring 71 to move linearly along the axial direction of the fourth threaded rod 73.

[0109] like Figure 15-16 As shown, the automatic scoring device for the aluminum shell of the power battery structural components also includes a feeding assembly, which includes:

[0110] A material box 8 for storing multiple aluminum shells is set on the workbench 1, and the multiple aluminum shells are arranged separately along the vertical direction of the material box 8;

[0111] A feeding mechanism 81 is provided on the material box 8, which is adapted to push the aluminum shell located at the bottom of the material box 8 to the circumferential limiting component 2.

[0112] In this embodiment, multiple aluminum shells are arranged vertically in the material box 8. When it is necessary to move one of the aluminum shells to the circumferential limiting component 2, the feeding mechanism 81 is activated to push the aluminum shell located at the bottom of the material box 8 to move outside the material box 8 and place it on the lower limiting component 22.

[0113] Specifically, such as Figure 15-16 As shown, the feeding mechanism 81 includes a fifth lead screw and nut pair, a feeding motor 82, and a feeding plate 84. The fifth lead screw and nut pair includes a fifth threaded rod 83 rotatably mounted on the material box 8 and a fifth nut that is fitted onto the fifth threaded rod 83. The fifth nut is connected to the feeding plate 84. The feeding motor 82 is mounted on the material box 8. The output end of the feeding motor 82 is coaxially connected to the fifth threaded rod 83. The feeding motor 82 is adapted to drive the fifth threaded rod 83 to rotate, thereby driving the feeding plate 84 to move linearly along the axial direction of the fifth threaded rod 83.

[0114] Specifically, such as Figure 15As shown, a material blocking mechanism is provided on each side of the material box 8. The material blocking mechanism includes a material blocking drive cylinder 85 installed on the material box 8 and a material blocking component 86 slidably installed on the material box 8. The telescopic end of the material blocking drive cylinder 85 is connected to the material blocking component 86 to drive the material blocking component 86 to move into or out of the material box 8.

[0115] In this embodiment, when it is necessary to push the bottom aluminum shell in the material box 8 before it leaves the material box 8 by the feeding plate 84, the material blocking drive cylinder 85 is activated to drive the material blocking component 86 into the material box 8, so that the material blocking component 86 extends into the second aluminum shell from bottom to top in the material box 8. The material blocking component 86 abuts against the inner wall of the aluminum shell to restrict the movement of the aluminum shell. The feeding plate 84 is activated to push the bottom aluminum shell out of the material box 8 and then reset. After the feeding plate 84 is reset, the material blocking drive cylinder 85 drives the material blocking component 86 out of the material box 8, releasing the restriction of the corresponding aluminum shell, so that the aluminum shells in the material box 8 fall down one layer at a time, so as to facilitate subsequent feeding.

[0116] Specifically, such as Figure 1 , Figure 15 As shown, the workbench 1 is provided with a discharge port 9, which includes an inlet end and an outlet end;

[0117] The lower limit member 22 includes a first limit member 91 and a second limit member 92. A bidirectional moving mechanism is provided on the worktable 1, which is connected to the first limit member 91 and the second limit member 92 respectively.

[0118] When the bidirectional moving mechanism drives the first limiting member 91 and the second limiting member 92 to move longitudinally towards each other until they abut each other, a lower limiting member 22 is formed to receive the aluminum shell and block the inlet end of the discharge port 9.

[0119] When the bidirectional moving mechanism drives the first limiting member 91 and the second limiting member 92 to move in opposite directions until they separate, the inlet end of the discharge port 9 is opened.

[0120] In this embodiment, when the first limiting member 91 and the second limiting member 92 abut against each other, they form a complete lower limiting member 22 to support the aluminum shell. After the aluminum shell has been fully processed, the bidirectional moving mechanism drives the first limiting member 91 and the second limiting member 92 to move in opposite directions to open the unloading port 9. Since the first limiting member 91 and the second limiting member 92 cannot form a complete lower limiting member 22 at this time, they cannot support the aluminum shell. The aluminum shell that was originally supported by the lower limiting member 22 falls after losing its support and enters the unloading port 9 from the inlet end of the unloading port 9. Then it is discharged to the outside of the worktable 1 through the outlet end of the unloading port 9, thus realizing automatic unloading.

[0121] Specifically, such as Figure 15As shown, the bidirectional moving mechanism includes a bidirectional screw 93 rotatably mounted on the worktable 1 and a bidirectional moving motor 94 mounted on the worktable 1. The bidirectional screw 93 is provided with two oppositely arranged threads, and a driving nut is respectively connected to the two oppositely arranged threads. One driving nut is connected to the first limiting member 91, and the other driving nut is connected to the second limiting member 92. The output end of the bidirectional moving motor 94 is coaxially connected to the bidirectional screw 93. The bidirectional moving motor 94 is adapted to drive the bidirectional screw 93 to rotate, thereby driving the first limiting member 91 and the second limiting member 92 to move linearly towards or away from each other along the axial direction of the bidirectional screw 93.

[0122] Example 4: This example also provides an automatic scoring method for the aluminum shell of a power battery structural component, based on Example 1, Example 2, or Example 3. The method includes the following steps:

[0123] S1. Place the aluminum shell at the circumferential limiting component 2 and limit the aluminum shell circumferentially through the circumferential limiting component 2;

[0124] S2, the action mounting round seat 31 moves toward the aluminum shell until the inner support 41 extends into the aluminum shell to a specified depth;

[0125] S3, Multiple inner support components 41 move synchronously to support the inner wall of the aluminum shell;

[0126] S4. Multiple external clamping members 52 move synchronously to abut against the outer wall of the aluminum shell portion that contacts the inner support member 41, and cooperate with the corresponding inner support member 41 to clamp the aluminum shell.

[0127] S5. The pusher 61 moves the corresponding pressure head 6 to extend out of the pressure groove 62 of the corresponding outer clamping member 52, and extrudes and marks the aluminum shell at the position corresponding to the pressure groove 62.

[0128] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic scoring device for aluminum shell of a power battery structural component, characterized in that... ,include: Workbench; A circumferential limiting component is provided on the workbench, the circumferential limiting component being adapted to receive the aluminum shell and limit the circumferential movement of the aluminum shell; The feed assembly is provided on the worktable, and the feed assembly includes a mounting round seat that is slidably disposed on the worktable along the axial direction of the aluminum shell located on the circumferential limiting assembly, and the mounting round seat is coaxially disposed with the aluminum shell. An inner support mechanism includes a plurality of inner support members that are equidistantly arranged along the circumference of the mounting base and slidably disposed on the mounting base along the radial direction of the mounting base. The mounting base is adapted to be moved so that the inner support members extend into the aluminum shell. When the inner support members are located inside the aluminum shell, the inner support members are adapted to be moved to support the inner wall of the aluminum shell. An external clamping mechanism includes a support plate disposed on the mounting base corresponding to the inner support member and an external clamping member slidably disposed on the support plate along the radial direction of the mounting base. The external clamping member is adapted to be moved to abut against the aluminum shell to cooperate with the inner support member to clamp the aluminum shell. The scoring assembly includes a pusher disposed on the support plate and a pressure head slidably disposed radially within the corresponding outer clamping member along the mounting base. The outer clamping member has a pressure groove. The pusher is adapted to move the pressure head to partially extend outside the corresponding pressure groove in order to perform extrusion scoring on the aluminum shell at the location corresponding to the pressure groove.

2. The automatic scoring device for aluminum shell of power battery structural components according to claim 1, characterized in that: The inner support mechanism also includes a driven inclined slider fixedly mounted on the inner support member, an inclined slider drive cylinder mounted on the mounting base, and an active inclined slider mounted on the telescopic end of the inclined slider drive cylinder and corresponding to the driven inclined slider. The active inclined slider and the corresponding driven inclined slider are arranged in radial inclined contact. When the inclined slider drive cylinder drives the active inclined slider to move axially, the driven inclined slider is driven to move radially through the inclined contact between the active and driven inclined sliders, thereby further driving the inner support member to move radially.

3. The automatic scoring device for aluminum shell of power battery structural components according to claim 1, characterized in that: The support plate is provided with a movable chamber for the outer clamping member to move radially along the mounting base, and the movable chamber corresponds to the position of the inner support member; The external clamping mechanism further includes a clamping drive component disposed on the corresponding support plate and a positioning component that is radially slidably disposed in the movable cavity on the corresponding support plate along the mounting base. A docking mechanism is provided between the external clamping component and the positioning component. The positioning component docks with the external clamping component located in the movable cavity through the docking mechanism. The clamping drive component is connected to the positioning component to drive the positioning component to move closer to or away from the aluminum shell, thereby driving the corresponding external clamping component to clamp or release the aluminum shell.

4. The automatic scoring device for aluminum shell of power battery structural components according to claim 3, characterized in that: The pusher is disposed on the positioning member corresponding to the support plate, and the pusher is adapted to move the pressure head in the outer clamping member when the outer clamping member located in the moving chamber docks with the positioning member; The telescopic end face of the pusher and the pressure head are respectively provided with a first magnetic attraction part, and when the telescopic end of the pusher contacts the pressure head, they are connected through the two first magnetic attraction parts; The inner wall of the outer clamping member and the pressure head are respectively provided with a second magnetic attraction part, and when the outer clamping member contacts the pressure head, they are connected through the two second magnetic attraction parts.

5. The automatic scoring device for aluminum shell of power battery structural components according to claim 3 or 4, characterized in that: The support plate is provided with at least two of the external clamping members, and the support plate is slidably provided with a movable seat corresponding to the external clamping member along the axial direction of the mounting round seat. The external clamping member is slidably provided on the corresponding movable seat along the moving direction of the positioning member in the moving chamber. The support plate has a moving channel that communicates with the moving chamber and allows the outer clamping member to slide along the axial direction of the mounting base. When the outer clamping member moves in the moving channel to the position of the moving chamber, it docks with the positioning member. When the positioning member is actuated and moves radially along the mounting base in the moving chamber, it drives the docked outer clamping member to move synchronously on the corresponding moving base. When the outer clamping member moves in the moving chamber to the moving channel, it disconnects from the positioning member.

6. The automatic scoring device for aluminum shell of power battery structural components according to claim 5, characterized in that, The support plate is provided with a switching drive component, which is adapted to move all the movable seats linearly along the axial direction of the mounting round seat on the corresponding support plate, thereby driving the outer clamping member corresponding to one of the movable seats to be located in the movable chamber.

7. The automatic scoring device for aluminum shell of power battery structural components according to claim 5, characterized in that, The dimensions of the pressure grooves in the different external clamping components are adapted to the dimensions of the corresponding pressure heads.

8. The automatic scoring device for aluminum shell of power battery structural components according to claim 1, characterized in that, It also includes an axial limiting component, the axial limiting component comprising: An axial fixing plate is installed on the worktable; An axially movable ring that is slidably disposed on the worktable along the axial direction of the mounting base; An axial drive component is installed on the workbench and connected to the axial moving ring to drive the axial moving ring to move linearly. The axial drive component is used to drive the axial moving ring to move so that it contacts one end face of the aluminum shell, and then pushes the aluminum shell so that the other end face of the aluminum shell abuts against the axial fixing plate.

9. The automatic scoring device for aluminum shell of power battery structural components according to claim 1, characterized in that, It also includes a feeding assembly, which includes: A material bin for storing multiple aluminum shells is set on the workbench, and the multiple aluminum shells are arranged individually along the vertical direction of the material bin; A feeding mechanism is provided on the hopper, which is adapted to push the aluminum shell located at the bottom of the hopper to the circumferential limiting component.

10. A method for automatically scoring the aluminum shell of a power battery structural component, comprising using an automatic scoring device for the aluminum shell of a power battery structural component as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. Place the aluminum shell at the circumferential limiting component and limit the circumferential position of the aluminum shell through the circumferential limiting component; S2. The action mounting round seat moves toward the aluminum shell until the inner support extends into the aluminum shell to a specified depth. S3. Multiple internal support components move synchronously to support the inner wall of the aluminum shell. S4. Multiple external clamping components move synchronously to abut against the outer wall of the aluminum shell portion that contacts the inner support component, and cooperate with the corresponding inner support component to clamp the aluminum shell. S5. The pusher moves the pressure head to partially extend out of the pressure groove corresponding to the outer clamping member, and extrusion marks are made on the aluminum shell at the position corresponding to the pressure groove.

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