Shell positioning device

Abstract

The utility model discloses a shell positioning device, which is used for positioning a battery shell, the battery shell comprises a main shell and two end covers arranged at the two axial ends of the main shell, the shell positioning device comprises a rack, the rack is provided with a positioning groove, and the positioning groove is used for placing the main shell; the number of the positioning mechanisms is two, and the two positioning mechanisms are oppositely arranged, can get close to each other or get away from each other, are used for positioning the two end covers and can apply abutting force parallel to the axial direction of the main shell to the end covers correspondingly so that the end covers can be pressed to the ends of the main shell; the first rotary driving mechanism is connected to the two positioning mechanisms and used for driving the main shell and the two end covers to synchronously rotate around the X axis, and the second rotary driving mechanism is connected to the rack and used for driving the two positioning mechanisms and the first rotary driving mechanism to rotate around the Z axis. According to the shell positioning device, the two end covers and the main shell can be synchronously driven to rotate, the step of disassembling the main shell is avoided, and the welding efficiency of the whole battery shell is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, in particular to a shell positioning device. Background Art

[0002] Cylindrical batteries consist of a main cylindrical shell and two end caps located at either axial end of the main cylindrical shell. The end caps and the main cylindrical shell are connected by welding. When welding the main cylindrical shell and the two end caps, the end cap on one end of the main cylindrical shell is welded first. The main cylindrical shell is then manually removed, the end cap is docked with the other end of the main cylindrical shell, and then installed on a machine. Finally, the end cap on the other end of the main cylindrical shell is welded, resulting in low welding efficiency for the entire cylindrical battery shell. Utility Model Content

[0003] In order to solve at least one problem existing in the above-mentioned prior art, according to one aspect of the present invention, a shell positioning device is provided for positioning a battery shell, wherein the battery shell includes a main shell and two end covers arranged at the axial ends of the main shell, and the shell positioning device includes: a frame; a positioning mechanism, including two, the two positioning mechanisms are arranged opposite to each other and can approach or move away from each other, for positioning the two end covers, and can respectively apply a supporting force to the end covers along the axial direction parallel to the main shell to press the end covers against the ends of the main shell; a first rotation drive mechanism, connected to the two positioning mechanisms, for driving the main shell and the two end covers to rotate synchronously around the X-axis; a second rotation drive mechanism is connected to the frame, for driving the two positioning mechanisms and the first rotation drive mechanism to rotate around the Z-axis.

[0004] In some embodiments, the positioning mechanism includes a sliding shaft, a collar, and an elastic member;

[0005] The sliding shaft is slidably connected to the driving mechanism;

[0006] The collar is slidably sleeved outside the sliding shaft and is used to position the end cover;

[0007] The elastic member is held between the frame and the collar and is used to apply elastic force to the collar.

[0008] In some embodiments, the positioning mechanism further includes a magnetic member connected to the sliding shaft or the collar for applying a magnetic force to the end cap.

[0009] In some embodiments, when the collar positions the end cap, the end of the sliding shaft is hidden in the collar, so that the collar forms a receiving groove for receiving a portion of the end cap.

[0010] In some embodiments, the housing positioning device includes an opening and closing drive mechanism, which is mounted on the frame and is used to drive the two positioning mechanisms to move away from each other and / or closer together.

[0011] In some embodiments, the opening and closing drive mechanism is used to drive the two positioning mechanisms to move away from each other and towards each other.

[0012] In some embodiments, the opening and closing drive mechanism includes a first clamping jaw cylinder and a second clamping jaw cylinder;

[0013] The first clamping jaw cylinder is used to drive the two positioning mechanisms to move away from each other;

[0014] The second clamping jaw cylinder is used to drive the two positioning mechanisms to move closer together.

[0015] In some embodiments, the first gripper cylinder is mounted to the second gripper cylinder.

[0016] In some embodiments, a positioning groove is provided on the frame, and the positioning groove is used to place the main shell.

[0017] In some embodiments, a support platform is provided on the frame, and the support platform is provided with the positioning groove.

[0018] In summary, the housing positioning device provided by the present invention has the following technical effects:

[0019] By setting two positioning mechanisms, the two end covers are positioned, and the end covers can be pressed against the ends of the main shell to achieve the positioning of the two end covers and the main shell. Since the first rotation drive mechanism is connected to the two positioning mechanisms, the two end covers and the main shell can be driven to rotate synchronously by the drive of the first rotation drive mechanism to achieve 360° welding of the end covers and the main shell. At the same time, by setting a second rotation drive mechanism, the two positioning mechanisms and the first rotation drive mechanism can be rotated around the Z axis, that is, the orientation of the end cover and the main shell can be adjusted, so that after one end cover is welded, the other end cover is also brought close to the welding gun for welding, avoiding the step of disassembling the main shell and improving the welding efficiency of the entire battery shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a housing positioning device according to an embodiment of the present utility model from one perspective;

[0021] Figure 2 for Figure 1 A schematic structural diagram of the housing positioning device from another perspective;

[0022] Figure 3 for Figure 1An exploded schematic diagram of the housing positioning device in FIG.

[0023] Figure 4 for Figure 1 A schematic structural diagram of the first rotary drive mechanism, the first gripper cylinder and the two positioning mechanisms;

[0024] Figure 5 for Figure 4 A schematic structural diagram of the first rotary drive mechanism and the two positioning mechanisms;

[0025] Figure 6 for Figure 5 An exploded schematic diagram of the positioning mechanism in FIG.

[0026] Figure 7 This is a schematic structural diagram of a battery case according to an embodiment of the present invention.

[0027] Figure: 100-housing positioning device, 10-frame, 11-positioning groove, 12-first mounting plate, 13-first vertical plate, 14-second mounting plate, 15-second vertical plate, 16-support platform, 20-positioning mechanism, 21-sliding shaft, 211-limiting member, 22-collar, 221-ring portion, 222-sleeve portion, 223-waist-shaped hole, 23-elastic member, 24-magnetic member, 30-first rotary drive mechanism, 31-first drive motor, 3 2-first pulley group, 33-second pulley group, 34-third pulley group, 35-transmission shaft, 36-linear bearing, 40-opening and closing drive mechanism, 41-first clamping jaw cylinder, 411-first cylinder body, 412-first clamping jaw, 42-second clamping jaw cylinder, 421-second cylinder body, 422-second clamping jaw, 50-second rotary drive mechanism, 51-second drive motor, 52-third pulley group, 200-battery shell, 210-main shell, 220-end cover. DETAILED DESCRIPTION

[0028] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0031] The present invention will be further described in detail below with reference to the accompanying drawings.

[0032] See also Figures 1 to 6 , a housing positioning device 100 provided in an embodiment of the present invention is used to position a battery housing 200, wherein, please refer to Figure 7 The battery case 200 includes a main case 210 and two end caps 220 provided at both axial ends of the main case 210. The case positioning device 100 includes a frame 10, a positioning mechanism 20, a first rotation drive mechanism 30, and a second rotation drive mechanism 50.

[0033] Among them, see Figures 1 to 3 , a positioning groove 11 is provided on the frame 10, and the positioning groove 11 is used to place the main shell 210; the positioning mechanism 20 includes two, and the two positioning mechanisms 20 are arranged opposite to each other and slide relative to the frame 10 respectively, for positioning the two end covers 220, and can respectively apply a supporting force to the end covers 220 along the axial direction parallel to the main shell 210 to press the end covers 220 on the end of the main shell 210; the first rotation drive mechanism 30 is connected to the two positioning mechanisms 20, for driving the main shell 210 and the two end covers 220 to rotate synchronously around the X axis, and the second rotation drive mechanism 50 is connected to the frame 10, for driving the two positioning mechanisms 20 and the first rotation drive mechanism 30 to rotate around the Z axis.

[0034] The above-mentioned shell positioning device 100 positions the two end covers 220 by setting two positioning mechanisms 20, and can press the end covers 220 against the ends of the main shell 210 to achieve the positioning of the two end covers 220 and the main shell 210. Since the first rotation drive mechanism 30 is connected to the two positioning mechanisms 20, the two end covers 220 and the main shell 210 can be driven to rotate synchronously by the drive of the first rotation drive mechanism 30 to achieve 360° welding of the end covers 220 and the main shell 210. At the same time, by setting the second rotation drive mechanism 50, the two positioning mechanisms 20 and the first rotation drive mechanism 30 can be rotated around the Z axis, that is, the orientation of the end covers 220 and the main shell 210 can be adjusted so that after one end cover 220 is welded, the other end cover 220 is also brought close to the welding gun for welding, thereby avoiding the step of disassembling the main shell 210 and improving the welding efficiency of the entire battery shell 200.

[0035] The battery case 200 of this embodiment is a cylindrical shell, and in other embodiments, it can also be a square shell. It can be understood that when the first rotation drive mechanism 30 drives the main shell 210 and the two end covers 220 to rotate, since the two positioning mechanisms 20 can hold the end covers 220 against the main shell 210, and after the main shell 210 and the end covers 220 are partially connected, the main shell 210 and the end covers 220 already have a connection point. Therefore, when the first rotation drive mechanism 30 drives the two positioning mechanisms 20 to rotate, it can not only drive the two end covers 220 to rotate, but also synchronize the main shell 210 to rotate, so as to perform welding on the entire circumference of the main shell 210.

[0036] Among them, see Figures 1 to 4 The frame 10 of this embodiment includes a first mounting plate 12, two oppositely arranged first vertical plates 13, a second mounting plate 14 and two oppositely arranged second vertical plates 15. The two first vertical plates 13 are arranged on the top of the first mounting plate 12 for installing the first rotation drive mechanism 30, the second mounting plate 14 is installed on the top of the two first vertical plates 13, and the two second vertical plates 15 are installed on the top of the second mounting plate 14 for installing the two positioning mechanisms 20.

[0037] In this embodiment, when positioning the main shell 210, a positioning groove 11 is provided on the frame 10, and the positioning groove 11 is used to place the main shell 210. In this way, through the setting of the positioning groove 11, the main shell 210 can be placed in the positioning groove 11, thereby conveniently realizing the positioning of the main shell 210.

[0038] Furthermore, to accommodate the installation of the various components of the first rotary drive mechanism 30, a support platform 16 is provided on the frame 10. The support platform 16 is provided with a positioning slot 11. Specifically, the support platform 16 is provided on the second mounting plate 14 so that the positioning slot 11 has a certain height to accommodate the arrangement of the various gears in the first rotary drive mechanism 30. In other embodiments, the main housing 210 may be positioned and installed by directly forming a slot on the second mounting plate 14.

[0039] See also Figures 1 to 6, is a structural diagram of the positioning mechanism 20, which includes a sliding shaft 21, a collar 22 and an elastic member 23; the sliding shaft 21 is slidably connected to the first rotation drive mechanism 30; the collar 22 is slidably sleeved outside the sliding shaft 21 for positioning the end cover 220; the elastic member 23 is held between the frame 10 and the collar 22 for applying an elastic force to the collar 22, so that when the battery shell 200 needs to be taken out and the end cover 220 needs to be placed, the collar 22 is driven to slide relative to the sliding shaft 21, and the sliding shaft 21 is also driven to slide relative to the frame 10. At this time, the collar 22 also compresses the elastic member 23, so that the battery shell 200 can be taken out and placed.

[0040] It should be noted that, when the driving collar 22 moves relative to the sliding shaft 21, the collar 22 is slidingly arranged relative to the sliding shaft 21, but it is necessary to synchronously drive the sliding shaft 21 to slide relative to the frame 10. Therefore, in this embodiment, a waist-shaped hole is provided on the collar 22 along the axial direction parallel to the sliding shaft 21, and a limiting member 211 is provided on the sliding shaft 21. The limiting member 211 is located in the waist-shaped hole, for example, a limiting bolt, and can slide relative to the hole wall of the waist-shaped hole 223. In this way, when the positioning mechanism 20 presses the end cover 220, the limiting member 211 abuts against one end of the waist-shaped hole 223. When the battery shell 200 needs to be disassembled, the driving collar 22 slides, and the waist-shaped hole 223 moves relative to the limiting member 211. The limiting member 211 abuts against the other end of the waist-shaped hole 223. At this time, under the action of external force, the sliding shaft 21 can be further driven to slide relative to the frame 10 to achieve the distance between the two sliding shafts 21. When the two sliding shafts 21 are driven to approach each other, the collars 22 are moved closer to each other under the elastic force of the elastic member 23 .

[0041] In this embodiment, when the ring 22 forms a receiving groove for accommodating the end cover 220, the end of the sliding shaft 21 is hidden in the ring 22, so that the ring 22 forms a receiving groove for accommodating the end cover 220, thereby facilitating the opening of the receiving groove. In other embodiments, the receiving groove can also be provided on the sliding shaft 21.

[0042] Furthermore, since the end cover 220 needs to be exposed relative to the ring 22 for welding to the main shell 210, the axial height of the receiving groove along the sliding shaft 21 is smaller than the height of the end cover 220, and only part of the end cover 220 is received so that the end cover 220 can be exposed.

[0043] Furthermore, since the collar 22 needs to position the end cover 220 and keep the end cover 220 fixed, the positioning mechanism 20 also includes a magnetic member 24, which is connected to the sliding shaft 21 or the collar 22, and is used to apply a magnetic force to the end cover 220. In this way, through the setting of the magnetic member 24, an attractive force can be generated on the end cover 220 to stably set the end cover 220 in the collar 22. In other embodiments, the end cover 220 can also be stably positioned by generating negative pressure.

[0044] In order to facilitate the installation of the magnetic member, the magnetic member 24 of this embodiment is provided at the end of the sliding shaft 21. For example, the magnetic member can be provided on the sliding shaft 21 by bonding. In other embodiments, a magnetic member can also be provided on the inner wall of the collar 22 to ensure the magnetic force on the end cap 220.

[0045] See also Figures 1 to 4 In one embodiment of the present invention, in order to facilitate the opening and closing and / or approaching of the two positioning mechanisms 20, the shell positioning device 100 includes an opening and closing drive mechanism 40, which is installed on the frame 10 and is used to drive the two positioning mechanisms 20 to move away from and / or approach each other. In this way, by setting the opening and closing drive mechanism 40 to motor-drive the two positioning mechanisms 20 to open and close, the driving force can be more stable and have higher driving efficiency than the manual driving method.

[0046] Furthermore, in order to ensure the welding efficiency of the battery shell 200, the opening and closing drive mechanism 40 of this embodiment is used to drive the two positioning mechanisms 20 away from each other and towards each other, and can not only drive the two positioning mechanisms 20 away from each other, but also drive the two positioning mechanisms 20 towards each other at the same time, thereby ensuring the welding efficiency of the battery shell 200.

[0047] Specifically, see Figures 2 to 4 The opening and closing drive mechanism 40 includes a first clamping cylinder 41 and a second clamping cylinder 42. The first clamping cylinder 41 is used to drive the two positioning mechanisms 20 away from each other; the second clamping cylinder 42 is used to drive the two positioning mechanisms 20 toward each other. Thus, by providing two clamping cylinders, the two positioning mechanisms 20 can be conveniently driven to move away from or toward each other. In other embodiments, the opening and closing drive mechanism 40 can be configured to be driven by two drive motors and two belts, with each side of the belt connected to a positioning mechanism 20. This can also achieve the two positioning mechanisms 20 moving away from or toward each other under the drive of the motors.

[0048] Furthermore, the method of using two clamping cylinders for separate driving is relative to the method of using one clamping cylinder to clamp the positioning mechanism 20 for movement. Since there will be production errors during the production of the clamping cylinders, when the two positioning mechanisms 20 are clamped by one clamping cylinder, the axial centerness of the two positioning mechanisms 20 will be offset. Therefore, through the setting of two clamping cylinders, the two positioning mechanisms 20 can be set independently to ensure coaxiality during installation, thereby ensuring the quality after welding.

[0049] Specifically, the first clamping jaw cylinder 41 includes a first cylinder body 411 and two first clamping jaws 412, and the second clamping jaw cylinder 42 includes a second cylinder body 421 and two second clamping jaws 422. The first clamping jaw cylinder 41 is installed on the second clamping jaw cylinder 42, that is, the first cylinder body 411 is installed on the second cylinder body 421, and the two first clamping jaws 412 are located between the two second clamping jaws 422. By installing the first clamping jaw cylinder 41 on the second clamping jaw cylinder 42, the setting of the entire opening and closing drive mechanism 40 is made compact, and the occupied volume of the entire shell positioning device 100 is reduced.

[0050] Among them, when the two first clamping jaws 412 in this embodiment drive the two positioning mechanisms 20 away, there is a gap between the first clamping jaws 412 and the sleeve portion 222 of the ring 22 to avoid scratching the sleeve portion 222, and to generate a force on the ring portion 221 of the ring 22 to push the ring 22 to slide relative to the sliding shaft 21 and further drive the sliding shaft 21 to slide.

[0051] See also Figures 1 to 4 In order to improve the welding efficiency of the battery shell 200, the shell positioning device 100 also includes a second rotation drive mechanism 50, which is connected to the frame 10 and is used to drive the positioning mechanism 20 and the first rotation drive mechanism 30 to rotate around the Z axis. In this way, after the welding of one end cover 220 is completed, the positioning mechanism 20 and the first rotation drive mechanism 30 are driven by the second rotation drive mechanism 50 to rotate around the Z axis, and the placement positions of the two end covers 220 are adjusted so that the other end cover 220 can face the welding gun, and can be welded again by the welding gun, thereby improving the welding efficiency of the entire battery shell 200.

[0052] Among them, the first rotation drive mechanism 30 includes a first drive motor 31, a first pulley group 32, a second pulley group 33, a third pulley group 34, a transmission shaft 35 and multiple linear bearings 36. The first pulley group 32 is connected to the first drive motor 31, and the first pulley group 32, the second pulley group 33, and the third pulley group 34 are all connected to the transmission shaft 35. The second pulley group 33 and the third pulley group 34 are respectively connected to a positioning mechanism 20. Linear bearings 36 are provided on the second vertical plate 15 in the frame 10 and on the second pulley group 33 and the third pulley group 34, so that the sliding shaft 21 in the positioning mechanism 20 can slide relative to the drive mechanism and the frame 10; in this way, under the drive of the first drive motor 31, the second pulley group 33 and the third pulley group 34 drive the two positioning mechanisms 20 to rotate synchronously.

[0053] Among them, the first pulley group 32, the second pulley group 33, and the third pulley group 34 of this embodiment all include two pulleys, and the first pulley group 32 is vertically arranged to the second pulley group 33 and the third pulley group 34, respectively, so as to reduce the occupied volume of the entire shell positioning device 100.

[0054] Furthermore, the second rotation drive mechanism 50 includes a second drive motor 51 and a third pulley group 34. The third pulley group 34 is connected between the second drive motor 51 and the first mounting plate 12 of the frame 10, so that under the drive of the second drive motor 51, it can drive the rotation of the frame 10, the first rotation drive mechanism 30 and the two positioning mechanisms 20, thereby achieving the effect of adjusting the positions of the two end covers 220 and the main shell 210.

[0055] The above-mentioned shell positioning device 100, by setting a second rotation drive mechanism 50, can drive the rotation of the frame 10, the first rotation drive mechanism 30 and the two positioning mechanisms 20, so as to adjust the positions of the two end covers 220 and the main shell 210, thereby improving welding efficiency; by setting an opening and closing drive mechanism 50, the two positioning mechanisms 20 can be driven to move away from or closer to each other, which has higher efficiency and stability than the manual drive method; by respectively driving the two positioning mechanisms 20 by the first clamping cylinder 41 and the second clamping cylinder 42, the installation coaxiality of the two positioning mechanisms 20 is guaranteed.

[0056] The technical means disclosed in the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A housing positioning device (100) for positioning a battery housing (200), wherein the battery housing (200) comprises a main housing (210) and two end covers (220) provided at both axial ends of the main housing (210), characterized in that: The housing positioning device (100) comprises: Frame (10); The positioning mechanisms (20) include two positioning mechanisms (20), which are arranged opposite to each other and can move closer to or farther from each other, and are used to position the two end covers (220), and can respectively apply a holding force along an axial direction parallel to the main shell (210) to the end covers (220), so as to press the end covers (220) against the ends of the main shell (210); A first rotation drive mechanism (30) is connected to the two positioning mechanisms (20) and is used to drive the main housing (210) and the two end covers (220) to rotate synchronously around the X axis; The second rotation drive mechanism (50) is connected to the frame (10) and is used to drive the two positioning mechanisms (20) and the first rotation drive mechanism (30) to rotate around the Z axis.

2. The housing positioning device (100) according to claim 1, characterized in that The positioning mechanism (20) comprises a sliding shaft (21), a collar (22) and an elastic member (23); The sliding shaft (21) is slidably connected to the driving mechanism; The collar (22) is slidably sleeved outside the sliding shaft (21) and is used to position the end cover (220); The elastic member (23) is held between the frame (10) and the collar (22) and is used to apply elastic force to the collar (22).

3. The housing positioning device (100) according to claim 2, characterized in that: The positioning mechanism (20) further comprises a magnetic member (24), wherein the magnetic member (24) is connected to the sliding shaft (21) or the collar (22) and is used to apply a magnetic force to the end cover (220).

4. The housing positioning device (100) according to claim 2, characterized in that When the collar (22) positions the end cover (220), the end of the sliding shaft (21) is hidden in the collar (22), so that the collar (22) forms a receiving groove for receiving part of the end cover (220).

5. The housing positioning device (100) according to any one of claims 1 to 4, characterized in that: The housing positioning device (100) comprises an opening and closing driving mechanism (40), which is mounted on the frame (10) and is used to drive the two positioning mechanisms (20) to move away from each other and / or move closer together.

6. The housing positioning device (100) according to claim 5, characterized in that: The opening and closing driving mechanism (40) is used to drive the two positioning mechanisms (20) to move away from each other and toward each other.

7. The housing positioning device (100) according to claim 6, characterized in that: The opening and closing drive mechanism (40) comprises a first clamping claw cylinder (41) and a second clamping claw cylinder (42); The first clamping claw cylinder (41) is used to drive the two positioning mechanisms (20) to move away from each other; The second clamping claw cylinder (42) is used to drive the two positioning mechanisms (20) to approach each other.

8. The housing positioning device (100) according to claim 7, characterized in that: The first clamping jaw cylinder (41) is mounted on the second clamping jaw cylinder (42).

9. The housing positioning device (100) according to any one of claims 1 to 4 or any one of claims 6 to 8, characterized in that: A positioning groove (11) is provided on the frame (10), and the positioning groove (11) is used to place the main shell (210).

10. The housing positioning device (100) according to claim 9, characterized in that: A support platform (16) is provided on the frame (10), and the support platform (16) is provided with the positioning groove (11).

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