Sealing nail welding protection device

Abstract

The utility model provides a sealing nail welding protection device, and relates to the technical field of battery welding. The sealing nail welding protection device comprises a fixed plate, a movable plate and a first driving mechanism, a through hole is formed in the fixed plate, the movable plate is movably arranged on the fixed plate, a welding hole is formed in the movable plate, the welding hole is communicated with the through hole, the welding hole is used for being aligned with a liquid injection hole of a battery cell, and the first driving mechanism is arranged on the fixed plate. The first driving mechanism is connected with the movable plate so as to drive the movable plate to move in the first direction, and the adaptability of the first driving mechanism and the battery cell can be improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of battery welding, in particular to a sealing nail welding protection device. BACKGROUND

[0002] During the production process of an electric core, a sealing nail welding process is required, which is used to weld a liquid injection hole on an aluminum shell of the electric core with a sealing aluminum nail so as to seal the electric core. However, during laser cleaning and pre-welding, dust and welding slag are generated, which requires a protection piece to be arranged above the electric core to protect the electric core.

[0003] The existing protection piece is a profiled cover plate used to protect the electric core, and the cover plate is matched with the model of the electric core. If other models of electric cores are produced, the cover plate needs to be redesigned, and the adaptability of the cover plate to the electric core is poor, and there are defects of long change type manufacturing cycle and high investment cost. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the application includes, for example, providing a sealing nail welding protection device which can improve the adaptability to the electric core.

[0005] Embodiments of the application can be implemented as follows:

[0006] The sealing nail welding protection device provided by the embodiments of the application comprises a fixed plate, a movable plate and a first driving mechanism, the fixed plate is provided with a through hole, the movable plate is movably arranged on the fixed plate, the movable plate is provided with a welding hole, the welding hole is communicated with the through hole, the welding hole is used to align with a liquid injection hole of an electric core, the first driving mechanism is arranged on the fixed plate, and the first driving mechanism is connected with the movable plate to drive the movable plate to move in a first direction.

[0007] Optionally, two flanges are arranged in the through hole in a second direction, the flanges extend in the first direction, and the second direction is perpendicular to the first direction.

[0008] The movable plate is provided with two convex strips, the two convex strips are respectively borne on the two flanges, and the convex strips can move in the first direction relative to the flanges.

[0009] Optionally, a first shielding part and a second shielding part are arranged in the through hole in the first direction, the movable plate has a first limit position and a second limit position during movement, when the movable plate is located at the first limit position, the movable plate shields the through hole in cooperation with the first shielding part, and when the movable plate is located at the second limit position, the movable plate shields the through hole in cooperation with the second shielding part.

[0010] Optionally, the inner wall of the through hole is provided with a first inner wall and a second inner wall relative to the first direction, a part of the first inner wall protrudes the first shielding part, a part of the second inner wall protrudes the second shielding part, and the first shielding part and the second shielding part extend towards each other.

[0011] When the movable plate is located at the first limit position, one end of the protruding strip along the first direction abuts against the part of the second inner wall which is not provided with the second shielding part; when the movable plate is located at the second limit position, one end of the protruding strip along the first direction abuts against the part of the first inner wall which is not provided with the first shielding part.

[0012] Optionally, the fixed plate is provided with a sliding rail, and the sealing pin welding protection device further comprises a connecting plate, the connecting plate is in sliding fit with the sliding rail, the connecting plate is fixedly connected with the movable plate, and the first driving mechanism is connected with the connecting plate to drive the connecting plate to move along the first direction.

[0013] Optionally, the number of the movable plates is multiple, the multiple movable plates are arranged along a second direction, the number of the through holes is multiple, the multiple movable plates correspond to the multiple through holes one by one, and the welding hole on each movable plate is in communication with the corresponding through hole.

[0014] The connecting plate is provided with multiple connecting parts along the second direction, and the multiple connecting parts are connected with the multiple movable plates one by one.

[0015] Optionally, the connecting plate is provided with a first sliding block and a second sliding block, the first driving mechanism is connected with the first sliding block, and the second sliding block is in sliding fit with the sliding rail.

[0016] Optionally, the first driving mechanism is a motor screw mechanism, the motor screw mechanism comprises a motor and a screw rod, the motor is arranged on the fixed plate, the motor is coaxially connected with the screw rod, a nut is arranged in the first sliding block, and the nut is in threaded fit with the screw rod.

[0017] Optionally, the fixed plate is provided with a support, and the screw rod is rotatably connected with the support.

[0018] Optionally, the sealing pin welding protection device further comprises a second driving mechanism, the second driving mechanism is connected with the fixed plate to drive the fixed plate to move along a third direction, and the third direction is perpendicular to the first direction.

[0019] The sealing nail welding protection device provided by the embodiments of the present application has the beneficial effects, for example, in order to improve the adaptability to the battery cell, a sealing nail welding protection device is designed, the sealing nail welding protection device comprises a fixed plate, a movable plate and a first driving mechanism, a through hole is formed in the fixed plate, the movable plate is movably arranged on the fixed plate, a welding hole is formed in the movable plate, the welding hole is in communication with the through hole, the welding hole is used for aligning with the liquid injection hole of the battery cell, the first driving mechanism is arranged on the fixed plate, and the first driving mechanism is connected with the movable plate, so as to drive the movable plate to move in the first direction. In the process of sealing nail welding, the positions of the liquid injection holes on battery cells of different models are different, at this time, the movable plate is driven by the first driving mechanism to move in the first direction until the welding hole is aligned with the liquid injection hole of the battery cell, at this time, the sealing nail welding can be accurately performed, and the adaptability to the battery cell is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced below, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0021] Figure 1 The schematic view for showing the positional relationship between the sealing nail welding protection device and the battery cell in the embodiments of the present application;

[0022] Figure 2 The partial structural schematic view of the sealing nail welding protection device in the embodiments of the present application;

[0023] Figure 3 The structural schematic view of the fixed plate in the embodiments of the present application;

[0024] Figure 4 The structural schematic view of the movable plate in the embodiments of the present application; Figure 3 The enlarged view of part A in the embodiments of the present application;

[0025] Figure 5 The structural schematic view of the movable plate in the embodiments of the present application;

[0026] Figure legend: 100-fixed plate; 110-through hole; 111-first inner wall; 120-flange; 130-first shielding part; 140-second shielding part; 150-slideway; 160-stand; 200-movable plate; 210-welding hole; 220-convex strip; 300-first driving mechanism; 310-motor; 320-screw rod; 400-connection plate; 410-connection part; 420-first sliding block; 430-second sliding block; 500-second driving mechanism; 600-battery cell; 610-liquid injection hole. DETAILED DESCRIPTION

[0027] So that the purposes, technical solutions and advantages of the embodiments of the present application are more apparent, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0028] Therefore, the detailed description of the embodiments of the present application provided below in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0029] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0030] In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship of the utility model product in use, only for the convenience of describing the present application and simplifying the description, and not to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.

[0031] In addition, if the terms "first", "second" and the like appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0032] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0033] As disclosed in the background art, the existing protective member uses a profiled cover plate to protect the battery cell, and the shape of the cover plate is adaptively designed according to different models of battery cells. If other models of battery cells are produced, the cover plate needs to be redesigned, resulting in poor adaptability of the protective member to the battery cell, long changeover manufacturing cycle, and high investment cost. The embodiments of the present application provide a sealing nail welding protection device, at least for solving the above technical problems.

[0034] Please refer to Figures 1-5The sealing nail welding protection device provided by the embodiment of the application comprises a fixed plate 100, a movable plate 200 and a first driving mechanism 300, the fixed plate 100 is provided with a through hole 110, the movable plate 200 is movably arranged on the fixed plate 100, the movable plate 200 is provided with a welding hole 210, the welding hole 210 is communicated with the through hole 110, the welding hole 210 is used for aligning with a liquid injection hole 610 of a battery cell 600, and the first driving mechanism 300 is arranged on the fixed plate 100 and connected with the movable plate 200 to drive the movable plate 200 to move along a first direction x.

[0035] The through hole 110 is a rectangular hole, and the length direction of the through hole 110 is the first direction x; the movable plate 200 can move along the first direction x under the driving of the first driving mechanism 300 until the welding hole 210 arranged on the movable plate 200 is aligned with the liquid injection hole 610 of the battery cell 600; after the welding hole 210 is aligned with the liquid injection hole 610, laser emitted by an external laser welding device passes through the welding hole 210 and the through hole 110 and is emitted to the liquid injection hole 610, so that the sealing nail is welded on the liquid injection hole 610 to seal the battery cell 600.

[0036] During the welding of the sealing nail, the positions of the liquid injection holes 610 on battery cells 600 of different models are different; at this time, the movable plate 200 is driven by the first driving mechanism 300 to move along the first direction x until the welding hole 210 is aligned with the liquid injection hole 610 of the battery cell 600, so that the welding of the sealing nail can be accurately performed, and the adaptability to the battery cell 600 is improved.

[0037] In the embodiment, two flanges 120 are arranged in the through hole 110 along a second direction y, the flanges 120 extend along the first direction x, and the second direction y is perpendicular to the first direction x; two convex strips 220 are arranged on the movable plate 200, the two convex strips 220 are respectively borne on the two flanges 120, and the convex strips 220 can move along the first direction x relative to the flanges 120.

[0038] The two flanges 120 are arranged on the inner wall of the through hole 110 along the second direction y, the two convex strips 220 on the movable plate 200 are arranged relative to each other along the second direction y, the length of the convex strip 220 is less than the length of the flange 120, so that the movable plate 200 can move along the first direction x under the driving of the first driving mechanism 300.

[0039] In the embodiment, the first shielding part 130 and the second shielding part 140 are oppositely arranged in the through hole 110 along the first direction x, and the movable plate 200 has a first limit position and a second limit position in the movement process. When the movable plate 200 is located at the first limit position, the movable plate 200 shields the through hole 110 in cooperation with the first shielding part 130. When the movable plate 200 is located at the second limit position, the movable plate 200 shields the through hole 110 in cooperation with the second shielding part 140.

[0040] It should be noted that when the movable plate 200 is located at the first limit position, the movable plate 200 and the first shielding part 130 shield the through hole 110 in cooperation. When the movable plate 200 is located at the second limit position, the movable plate 200 and the second shielding part 140 shield the through hole 110 in cooperation. When the movable plate 200 is located between the first limit position and the second limit position, the movable plate 200, the first shielding part 130 and the second shielding part 140 shield the through hole 110 in cooperation.

[0041] In the movement process of the movable plate 200, the through hole 110 is always shielded, so that the laser emitted by the external laser welding equipment is not easy to be directly emitted to the battery cell 600 through the through hole 110, thereby avoiding damage to the battery cell 600.

[0042] In the embodiment, the first inner wall 111 and the second inner wall are oppositely arranged in the through hole 110 along the first direction x. Part of the first inner wall 111 protrudes the first shielding part 130, part of the second inner wall protrudes the second shielding part 140, and the first shielding part 130 and the second shielding part 140 extend towards each other. When the movable plate 200 is located at the first limit position, one end of the protruding strip 220 along the first direction x abuts against the part of the second inner wall which is not provided with the second shielding part 140. When the movable plate 200 is located at the second limit position, one end of the protruding strip 220 along the first direction x abuts against the part of the first inner wall 111 which is not provided with the first shielding part 130.

[0043] The first shielding part 130 is protruded from the middle part of the first inner wall 111, and the second shielding part 140 is protruded from the middle part of the second inner wall. When the movable plate 200 is located at the first limit position, the two protruding strips 220 respectively abut against the part of the second inner wall which is not provided with the second shielding part 140. When the movable plate 200 is located at the second limit position, the two protruding strips 220 respectively abut against the part of the first inner wall 111 which is not provided with the first shielding part 130.

[0044] In the embodiment, the fixed plate 100 is provided with a sliding rail 150, and the sealing nail welding protection device further comprises a connecting plate 400. The connecting plate 400 is in sliding cooperation with the sliding rail 150, the connecting plate 400 is fixedly connected with the movable plate 200, and the first driving mechanism 300 is connected with the connecting plate 400 to drive the connecting plate 400 to move along the first direction x.

[0045] The sliding rail 150 extends along the first direction x, and the fixed connection between the connecting plate 400 and the movable plate 200 includes, but is not limited to, bolt connection, welding, etc.

[0046] When the first driving mechanism 300 and the driving connecting plate 400 move along the first direction x, the connecting plate 400 drives the movable plate 200 to move synchronously, and the connecting plate 400 is in sliding fit with the sliding rail 150, so that the stability of the movable plate 200 during movement is higher.

[0047] In the embodiment, the number of the movable plates 200 is multiple, the number of the through holes 110 is multiple, the multiple movable plates 200 correspond to the multiple through holes 110 one by one, the welding hole 210 on each movable plate 200 is in communication with the corresponding through hole 110, and the connecting plate 400 is provided with multiple connecting portions 410 along the second direction y, and the multiple connecting portions 410 correspond to the multiple movable plates 200 one by one.

[0048] The connecting plate 400 is located above the movable plate 200, the bottom surface of the connecting plate 400 is provided with multiple connecting portions 410, the multiple connecting portions 410 are arranged along the second direction y, and the multiple connecting portions 410 are fixedly connected to the multiple movable plates 200 one by one.

[0049] By arranging multiple movable plates 200, when multiple same models of the battery cells 600 need to be welded in batches, the connecting plate 400 is driven to move by the first driving mechanism 300, the multiple movable plates 200 are simultaneously driven to move to the position by the connecting plate 400, and the sealing nails on the multiple battery cells 600 can be welded, so that the production efficiency is improved.

[0050] Exemplarily, the number of the movable plates 200 is two, the two movable plates 200 are arranged along the second direction y, the number of the through holes 110 is two, and the two movable plates 200 correspond to the two through holes 110 respectively; the connecting plate 400 is provided with two connecting portions 410 along the second direction y, and the two connecting portions 410 are fixedly connected to the two movable plates 200 respectively.

[0051] It can be understood that the number of the movable plates 200 can be determined according to actual production needs, for example, the number of the movable plates 200 can be more than three, and no limitation is made thereto.

[0052] In the embodiment, the connecting plate 400 is provided with a first sliding block 420 and a second sliding block 430, the first driving mechanism 300 is connected to the first sliding block 420, and the second sliding block 430 is in sliding fit with the sliding rail 150.

[0053] The connecting plate 400 is a rectangular plate, the length direction of the connecting plate 400 is the second direction y, the first sliding block 420 and the second sliding block 430 are respectively located at two ends of the length direction of the connecting plate 400, and the first sliding block 420 and the second sliding block 430 are both fixed on the bottom surface of the connecting plate 400.

[0054] In the embodiment, the first driving mechanism 300 is a motor screw mechanism, the motor screw mechanism comprises a motor 310 and a screw rod 320, the motor 310 is arranged on the fixed plate 100, the motor 310 is coaxially connected with the screw rod 320, a nut is arranged in the first sliding block 420, and the nut is threadedly matched with the screw rod 320.

[0055] When the movable plate 200 needs to be moved, the motor 310 is started, the motor 310 drives the screw rod 320 to rotate, and then the first sliding block 420 moves along the length direction of the screw rod 320, the first sliding block 420 drives the connecting plate 400 and the second sliding block 430 at the other end of the connecting plate 400 to move along the length direction of the sliding rail 150, and in the process, the movable plate 200 moves synchronously with the connecting plate 400.

[0056] In other embodiments, the first driving mechanism 300 can also be a driving member such as a gas cylinder, the gas cylinder is connected with the connecting plate 400, and the connecting plate 400 can also be driven to move.

[0057] In the embodiment, the fixed plate 100 is provided with a support 160, and the screw rod 320 is rotatably connected with the support 160.

[0058] The support 160 can be provided with a bearing or the like to cooperate with the rotation of the screw rod 320, and the end of the screw rod 320 away from the motor 310 is rotatably connected with the support 160, so that the stability of the rotation process of the screw rod 320 is improved, and the stability of the movement process of the first sliding block 420 is improved.

[0059] In the embodiment, the sealing nail welding protection device further comprises a second driving mechanism 500, the second driving mechanism 500 is connected with the fixed plate 100 to drive the fixed plate 100 to move along the third direction z, and the third direction z is perpendicular to the first direction x.

[0060] The second driving mechanism 500 can be a motor screw mechanism, the third direction z is a vertical direction, the fixed plate 100 is connected with the second driving mechanism 500, so that the height of the fixed plate 100 is adjusted, and then the height of the different models of the battery cell 600 is adapted.

[0061] In summary, the sealing nail welding protection device provided by the embodiment of the application can be used for different models of battery cells 600, and the sealing nail welding can be accurately performed after the height of the fixed plate 100 is adjusted and the welding hole 210 is aligned with the liquid injection hole 610 of the battery cell 600, thereby improving the adaptability to the battery cell 600.

[0062] The above merely provides a specific implementation of the application, but the protection scope of the application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the application, which should be covered by the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. A seal pin welding protection device, characterized in that, The application relates to a fixing plate (100), a movable plate (200) and a first driving mechanism (300), a through hole (110) is formed in the fixing plate (100), the movable plate (200) is movably arranged on the fixing plate (100), a welding hole (210) is formed in the movable plate (200), the welding hole (210) is communicated with the through hole (110), the welding hole (210) is used for aligning with a liquid injection hole (610) of a battery cell (600), the first driving mechanism (300) is arranged on the fixing plate (100), and the first driving mechanism (300) is connected with the movable plate (200) so as to drive the movable plate (200) to move in a first direction.

2. The seal stitch welding protection device of claim 1, wherein, Two flanges (120) are oppositely arranged in the through hole (110) in a second direction, the flanges (120) extend in the first direction, and the second direction is perpendicular to the first direction. Two convex strips (220) are arranged on the movable plate (200), the two convex strips (220) are respectively borne by the two flanges (120), and the convex strips (220) can move in the first direction relative to the flanges (120).

3. The seal stitch welding protection device of claim 2, wherein, A first shielding part (130) and a second shielding part (140) are oppositely arranged in the through hole (110) in the first direction, the movable plate (200) has a first limit position and a second limit position during movement, when the movable plate (200) is located at the first limit position, the movable plate (200) shields the through hole (110) in cooperation with the first shielding part (130); and when the movable plate (200) is located at the second limit position, the movable plate (200) shields the through hole (110) in cooperation with the second shielding part (140).

4. The seal stitch welding protection device of claim 3, wherein, A first inner wall (111) and a second inner wall are oppositely arranged in the through hole (110) in the first direction, part of the first inner wall (111) protrudes to form the first shielding part (130), part of the second inner wall protrudes to form the second shielding part (140), and the first shielding part (130) and the second shielding part (140) extend towards each other. When the movable plate (200) is located at the first limit position, one end of the convex strip (220) in the first direction abuts against part of the second inner wall which is not provided with the second shielding part (140); and when the movable plate (200) is located at the second limit position, one end of the convex strip (220) in the first direction abuts against part of the first inner wall (111) which is not provided with the first shielding part (130).

5. The seal stitch welding protection device of claim 1, wherein, The fixed plate (100) is provided with a sliding rail (150), and the sealing pin welding protection device further comprises a connecting plate (400) which is in sliding fit with the sliding rail (150), the connecting plate (400) is fixedly connected with the movable plate (200), and the first driving mechanism (300) is connected with the connecting plate (400) to drive the connecting plate (400) to move along the first direction.

6. The seal stitch welding protection device of claim 5, wherein, The number of the movable plates (200) is multiple, the movable plates (200) are arranged along a second direction, the number of the through holes (110) is multiple, the movable plates (200) correspond to the through holes (110) one by one, and the welding holes (210) on each movable plate (200) are in communication with the corresponding through holes (110). The connecting plate (400) is provided with a plurality of connecting portions (410) along the second direction, and the connecting portions (410) are connected with the movable plates (200) one by one.

7. The seal stitch welding protection device of claim 5, wherein, The connecting plate (400) is provided with a first sliding block (420) and a second sliding block (430), the first driving mechanism (300) is connected with the first sliding block (420), and the second sliding block (430) is in sliding fit with the sliding rail (150).

8. The seal stitch welding protection device of claim 7, wherein, The first driving mechanism (300) is a motor screw mechanism, the motor screw mechanism comprises a motor (310) and a screw rod (320), the motor (310) is arranged on the fixed plate (100), the motor (310) is coaxially connected with the screw rod (320), and a nut is arranged in the first sliding block (420) and is in threaded fit with the screw rod (320).

9. The seal stitch welding protection device of claim 8, wherein, The fixed plate (100) is provided with a support (160), and the screw rod (320) is rotatably connected with the support (160).

10. The seal stitch welding protection device according to any one of claims 1-9, characterized in that, The sealing pin welding protection device further comprises a second driving mechanism (500), the second driving mechanism (500) is connected with the fixed plate (100) to drive the fixed plate (100) to move along a third direction, and the third direction is perpendicular to the first direction.

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