Circumferential welding equipment for battery shell

Abstract

The utility model discloses circumferential welding equipment for a battery shell. The circumferential welding equipment comprises a base, a turntable mechanism, a laser welding mechanism and a battery autorotation device, during production, a battery is placed in the battery placement position, the rotary disc driver drives the welding rotary disc to continuously rotate, and when the welding rotary disc drives the battery autorotation device to pass through a welding area, the autorotation driver drives the battery jig to rotate for at least one circle; the welding focus of the laser welding mechanism can adapt to the welding position of the battery shell, peripheral side welding of the battery can be completed, the welding rotary disc does not need to be started and stopped frequently, and therefore the production continuity of the battery shell circumferential welding equipment can be improved, and the production efficiency of the battery shell circumferential welding equipment is improved.

Description

Technical Field

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

[0002] The shell of the cylindrical battery includes a cylindrical shell and an upper cover. During production, the upper cover is sealed with the cylindrical shell, and the battery shell peripheral welding equipment is used to weld and fix the two. Some battery shell peripheral welding equipment on the market includes a machine base, a welding turntable and a laser welding mechanism. The laser welding mechanism is provided with a welding head, and a battery rotation device is provided on the welding turntable. The battery rotation device includes a battery fixture for fixing the battery and a rotation driver for rotating the battery fixture. During production, the battery is placed in the battery fixture, and the welding turntable drives the battery rotation device to rotate until the battery enters the corresponding station of the laser welding mechanism. Then the welding turntable stops rotating. At this time, the rotation driver can drive the battery fixture to drive the battery to rotate, and the welding head performs peripheral side welding on the battery. After the battery is welded, the welding turntable starts to rotate again, and then the battery to be welded is replaced and prepared for the next welding cycle. However, the above-mentioned battery shell peripheral welding equipment still has room for improvement in production efficiency. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a battery shell peripheral welding device, which can further improve the production efficiency of battery shell peripheral welding.

[0004] According to the battery shell peripheral welding equipment of the embodiment of the utility model, it includes a machine base, a turntable mechanism, a laser welding mechanism and a battery rotation device. The machine base is provided with a welding area; the turntable mechanism is provided on the machine base, the turntable mechanism includes a welding turntable and a turntable driver, the welding turntable is rotatably provided on the machine base, and the turntable driver can drive the welding turntable to rotate; the laser welding mechanism is provided on the machine base and is located on the radial side of the welding turntable, the laser welding mechanism is provided with a welding focus, the welding focus can be adjusted in the welding area, and the laser welding mechanism can weld the workpiece located in the welding area; the battery rotation device is provided on the welding turntable, the battery rotation device includes a rotation driver and a battery fixture, the battery fixture is rotatably provided on the welding turntable, the battery fixture is provided with a battery placement position, the rotation driver can drive the battery fixture to rotate, the welding turntable can drive the battery rotation device to pass through the welding area, and the battery fixture rotates at least one circle during the process of the battery rotation device moving through the welding area.

[0005] The battery shell peripheral welding equipment according to the embodiment of the utility model has at least the following beneficial effects: during production, the battery is placed in the battery placement position, the turntable driver drives the welding turntable to rotate continuously, and the welding turntable drives the battery rotation device to pass through the welding area. The rotation driver drives the battery fixture to rotate for at least one circle. At this time, when the battery shell passes through the welding area, the welding focus of the laser welding mechanism can adapt to the welding position of the battery shell, and the peripheral side welding of the battery can be completed without frequently starting and stopping the welding turntable, thereby improving the production continuity of the battery shell peripheral welding equipment, and then improving the production efficiency of the battery shell peripheral welding equipment.

[0006] According to some embodiments of the utility model, the machine base is provided with a control module, and the control module is electrically connected to the turntable drive, the rotation drive and the laser welding mechanism.

[0007] According to some embodiments of the present invention, the welding turntable is provided with a turntable encoder, the turntable encoder is electrically connected to the control module, and the rotation speed of the turntable driver is set proportionally to the rotation speed of the self-rotating driver.

[0008] According to some embodiments of the present invention, the laser welding mechanism is a three-dimensional galvanometer laser welding machine.

[0009] According to some embodiments of the present invention, part of the outer periphery of the welding turntable is located in the welding area, and the battery fixture is arranged on the outer periphery of the welding turntable.

[0010] According to some embodiments of the utility model, the battery fixture includes a battery top pressure seat and a battery bottom support seat, the battery top pressure seat and the battery bottom support seat are arranged along the rotation axis direction of the welding turntable, the battery placement position is formed between the battery top pressure seat and the battery bottom support seat, the self-rotation drive is connected to the battery top pressure seat and is used to drive the battery top pressure seat to rotate, the battery bottom support seat is rotatably arranged on the welding turntable, the battery bottom support seat is movably arranged on the welding turntable along the rotation axis direction of the welding turntable and can approach or move away from the battery top pressure seat, and the battery self-rotation device also includes a clamping drive mechanism, and the clamping drive mechanism is used to drive the battery bottom support seat to move.

[0011] According to some embodiments of the utility model, the clamping drive mechanism includes a movable part and an annular track, the annular track is arranged on the machine base and coaxially with the welding turntable, the battery base support is rotatably connected to one end of the movable part, the other end of the movable part is movably abutted against the annular track and can move along the annular track, the movable part can move relative to the welding turntable along the direction of the rotation axis of the welding turntable, and a pushing part is provided at a position of the annular track corresponding to the welding area, and when the battery rotation device passes through the welding area, the pushing part pushes the movable part and the battery base support to move toward the battery top pressure seat, and makes the battery base support seat and the battery top pressure seat cooperate to clamp the battery.

[0012] According to some embodiments of the utility model, the battery rotation device also includes a limit driver and two side limit frames, the two side limit frames are disposed on both radial sides of the battery placement position along the rotation axis, the two side limit frames are movably disposed on the welding turntable, the limit driver is disposed on the welding turntable and is transmission-connected to the two side limit frames, and the limit driver can drive the two side limit frames to move closer to or away from each other.

[0013] According to some embodiments of the utility model, it also includes a loading mechanism and a unloading mechanism. The loading mechanism is arranged on the machine base and can place the battery into the battery placement position of the battery rotation device. The unloading mechanism is arranged on the machine base and can take the battery out of the battery placement position of the battery rotation device.

[0014] According to some embodiments of the present invention, at least two battery rotation devices are provided, and all of the battery rotation devices are evenly arranged around the rotation axis of the welding turntable.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 A schematic top view of a battery casing peripheral welding device according to an embodiment of the utility model;

[0018] Figure 2 It is a three-dimensional schematic diagram of a partial structure of a battery casing peripheral welding device according to an embodiment of the utility model;

[0019] Figure 3 For the utility model embodiment Figure 2A local enlarged schematic diagram of D;

[0020] Figure 4 It is a three-dimensional schematic diagram of a partial structure of a battery rotation device according to an embodiment of the utility model;

[0021] Figure 5 It is a schematic top view of a partial structure of a battery casing peripheral welding device according to an embodiment of the utility model.

[0022] Reference numerals:

[0023] A machine base 100, a welding area 110, and a welding arc guide plate 120;

[0024] Welding turntable 200;

[0025] Laser welding mechanism 300;

[0026] Battery rotation device 400, rotation driver 410, battery fixture 420, battery top pressure seat 421, battery bottom support seat 422, clamping drive mechanism 430, movable part 431, annular track 432, limit driver 440, limit cylinder 441, separation part 442, elastic part 443, side limit frame 450, limit roller 451;

[0027] A first position sensor 500;

[0028] A second position sensor 600;

[0029] Feeding mechanism 700, feeding turntable 710, battery feeding position 711, guide trough 720, feeding arc guide plate 730;

[0030] Unloading mechanism 800, unloading turntable 810, battery unloading position 811, unloading arc guide plate 820;

[0031] - Battery 900. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] In the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0035] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0036] The shell of the cylindrical battery includes a cylindrical shell and an upper cover. During production, the upper cover is sealed with the cylindrical shell, and the battery shell peripheral welding equipment is used to weld and fix the two. Some battery shell peripheral welding equipment on the market includes a base 100, a welding turntable 200 and a laser welding mechanism 300. The laser welding mechanism 300 is provided with a welding head. The welding turntable 200 is provided with a battery self-rotation device 400. The battery self-rotation device 400 includes a battery fixture 420 for fixing the battery and a self-rotation driver 410 for rotating the battery fixture 420. During production, the battery is placed in the battery fixture 420, and the welding turntable 200 drives the battery self-rotation device 400 to rotate until the battery enters the corresponding station of the laser welding mechanism 300. Then the welding turntable 200 stops rotating. At this time, the self-rotation driver 410 can drive the battery fixture 420 to drive the battery to rotate, and the welding head performs peripheral side welding on the battery. After the battery welding is completed, the welding turntable 200 starts to rotate again, and then the battery to be welded is replaced and prepared for the next welding cycle. However, in the above-mentioned battery shell peripheral welding equipment, the welding turntable 200 still needs to be frequently started and stopped, and the production efficiency still has room for improvement.

[0037] Reference Figures 1 to 5, is a battery shell peripheral welding device according to an embodiment of the utility model, comprising a machine base 100, a turntable mechanism, a laser welding mechanism 300 and a battery self-rotating device 400. The machine base 100 is provided with a welding area 110; the turntable mechanism is arranged on the machine base 100, and the turntable mechanism comprises a welding turntable 200 and a turntable driver, the welding turntable 200 is rotatably arranged on the machine base 100, and the turntable driver can drive the welding turntable 200 to rotate; the laser welding mechanism 300 is arranged on the machine base 100 and is located on one radial side of the welding turntable 200, and the laser welding mechanism 300 is provided with a welding focus, and the welding focus can be adjusted in the welding area 110, so that the laser welding mechanism 300 can be located in the welding area 110. parts for welding; the battery rotation device 400 is arranged on the welding turntable 200, the battery rotation device 400 includes a rotation driver 410 and a battery fixture 420, the battery fixture 420 is rotatably arranged on the welding turntable 200, the battery fixture 420 is provided with a battery placement position, the rotation driver 410 can drive the battery fixture 420 to rotate, the welding turntable 200 can drive the battery rotation device 400 to pass through the welding area 110, and the battery fixture 420 rotates at least one circle during the movement of the battery rotation device 400 through the welding area 110.

[0038] During production, the battery is placed in the battery placement position, and the turntable driver drives the welding turntable 200 to rotate continuously. The welding turntable 200 drives the battery rotation device 400 to pass through the welding area 110, and the rotation driver 410 drives the battery fixture 420 to rotate at least one circle. At this time, when the battery shell passes through the welding area 110, the welding focus of the laser welding mechanism 300 can adapt to the welding position of the battery shell, and the peripheral side welding of the battery can be completed without frequently starting and stopping the welding turntable 200, thereby improving the production continuity of the battery shell peripheral welding equipment, and then improving the production efficiency of the battery shell peripheral welding equipment.

[0039] It is understandable that when the battery rotation device 400 passes through the welding area 110, the rotation driver 410 can drive the battery fixture 420 to rotate one week, one and a half weeks, two weeks or more, and those skilled in the art can make specific configurations according to actual needs.

[0040] In the embodiment, the base 100 is provided with a control module, and the control module is electrically connected to the turntable driver, the self-rotation driver 410 and the laser welding mechanism 300. The control module is provided to facilitate the control module to control the rotation speed of the turntable driver to drive the welding turntable 200 to rotate, and to control the rotation speed of the self-rotation driver 410 according to the rotation speed of the welding turntable 200, so that the self-rotation driver 410 can drive the battery fixture 420 to rotate one circle or more during the period of passing through the welding area 110; the control module can also control the opening and closing and power of the laser welding mechanism 300, and the laser welding mechanism 300 is started only when the battery fixture 420 enters the welding area 110, saving energy.

[0041] Specifically, the control module can be a structure with a control circuit such as a PLC or a single-chip microcomputer, and those skilled in the art can configure it specifically according to actual needs. The turntable driver can adopt a structure that outputs rotational power such as a reduction motor, an internal combustion engine or a hollow rotating platform, and those skilled in the art can configure it specifically according to actual needs. The self-rotation driver 410 adopts a motor. It is conceivable that the self-rotation driver 410 can also be other structures. For example, the self-rotation driver 410 adopts a planetary gear structure, the ring gear of the planetary gear structure is fixed to the base 100, and the planetary pinion is connected to the battery fixture 420. When the welding turntable 200 drives the battery fixture 420 and the planetary pinion to move, the planetary pinion is engaged with the ring gear, so that the planetary pinion drives the battery fixture 420 to rotate, thereby driving the battery on it to rotate, and the battery shell can be welded circumferentially when passing through the welding area 110.

[0042] In some embodiments, the welding turntable 200 is provided with a turntable encoder, which is electrically connected to the control module, and the rotation speed of the turntable driver is proportional to the rotation speed of the self-rotation driver 410. The control module can determine the current rotation angle of the welding turntable 200 through the turntable encoder, so as to know whether the battery fixture 420 enters the welding area 110, or where it is in the welding area 110. As the welding turntable 200 rotates, the position of the battery self-rotation device 400 relative to the laser welding mechanism 300 and the distance between the two will change to a certain extent. The control module can control the welding focus of the laser welding mechanism 300 to follow the movement of the battery according to the preset, and control the welding power of the laser welding mechanism 300 according to the distance between the two, so that the welding effect of the battery shell is relatively uniform. When the speed ratio between the welding turntable 200 and the battery fixture 420 is fixed, if the speed of the welding turntable 200 is fixed, the number of rotations of the battery fixture 420 in the welding area 110 will be fixed, so that the control module can adjust the welding power of the laser welding mechanism 300 according to the speed of the welding turntable 200 to adapt to production needs and reduce the difficulty of using the equipment.

[0043] It is conceivable that, in some cases, the welding focus of the laser welding mechanism 300 can also be adjusted by manual control, or by setting a visual camera in the laser welding mechanism 300 to detect the position of the battery, thereby automatically adjusting the position of the welding focus and performing follow-up welding on the battery shell.

[0044] In other embodiments, the base 100 is provided with a first position sensor 500 for detecting that the battery self-rotation device 400 enters the welding area 110 and a second position sensor 600 for detecting that the battery self-rotation device 400 leaves the welding area 110. The first position sensor 500 and the second position sensor 600 are respectively disposed on opposite sides of the welding area 110, and the first position sensor 500 and the second position sensor 600 are both electrically connected to the control module. When the welding turntable 200 rotates, the battery self-rotation device 400 drives the battery to pass through the first position sensor 500 first, at which time the control module can detect that the battery to be welded has entered the welding area 110; when the battery self-rotation device 400 drives the battery to pass through the second position sensor 600, the control module can detect that the battery has completed welding and left the welding area 110; the first position sensor 500 and the second position sensor 600 are provided to provide a physical basis for the automatic control of the equipment.

[0045] Specifically, the first position sensor 500 may be a position sensor capable of detecting the position of an object, such as a photoelectric position sensor, an electromagnetic position sensor, or a Hall position sensor, and those skilled in the art may configure it specifically according to actual needs. The second position sensor 600 may be a position sensor capable of detecting the position of an object, such as a photoelectric position sensor, an electromagnetic position sensor, or a Hall position sensor, and those skilled in the art may configure it specifically according to actual needs.

[0046] In the embodiment, the laser welding mechanism 300 is a three-dimensional galvanometer laser welding machine. Due to the use of a three-dimensional galvanometer laser welding machine, the control module can adjust the welding power of the three-dimensional galvanometer laser welding machine in real time according to the position of the battery rotation device 400 to achieve flying welding, and adjust the welding focus position of the three-dimensional galvanometer laser welding machine by adjusting the three-dimensional galvanometer, so that the peripheral side welding can be continuously followed by the rotating battery in the welding area 110, and the welding quality and welding efficiency of the laser welding are both high. It is conceivable that the laser welding mechanism 300 can also achieve the adjustable welding focus position in the welding area 110 in other ways, for example, a linear module is set on the machine base 100, and the laser welding mechanism 300 is an ordinary laser welding machine, and the linear module drives the laser welding mechanism 300 to move to adjust the position of the welding focus in the welding area 110; or a mechanical arm is set on the machine base 100, and the laser welding mechanism 300 is connected to the mechanical arm, and the mechanical arm drives the laser welding mechanism 300 to move in three dimensions to control the position adjustment of the welding focus in the welding area 110.

[0047] In an embodiment, part of the outer periphery of the welding turntable 200 is located within the welding area 110, and the battery fixture 420 is disposed on the outer periphery of the welding turntable 200, so that the laser welding mechanism 300 located on the radial side of the welding turntable 200 can conveniently weld the battery on the battery fixture 420, and the structure is simple and easy to implement.

[0048] In an embodiment, the battery fixture 420 includes a battery top pressure seat 421 and a battery bottom support seat 422, and the battery top pressure seat 421 and the battery bottom support seat 422 are arranged along the rotation axis direction of the welding turntable 200, and a battery placement position is formed between the battery top pressure seat 421 and the battery bottom support seat 422. The rotation driver 410 is connected to the battery top pressure seat 421 and is used to drive the battery top pressure seat 421 to rotate, and the battery bottom support seat 422 is rotatably set on the welding turntable 200. The battery bottom support seat 422 is movably set on the welding turntable 200 along the rotation axis direction of the welding turntable 200 and can be close to or away from the battery top pressure seat 421. The battery rotation device 400 also includes a clamping drive mechanism 430, and the clamping drive mechanism 430 is used to drive the battery bottom support seat 422 to move. Specifically, the rotation axis of the welding turntable 200 is along the up and down direction. The battery is placed in the battery bottom support 422, and then the clamping drive mechanism 430 drives the battery bottom support 422 to approach the battery top pressure seat 421. The battery bottom support 422 and the battery top pressure seat 421 clamp and position the battery. At this time, the rotation drive 410 can drive the battery top pressure seat 421, the battery and the battery bottom support 422 to rotate synchronously, and the shell circumferential welding can be completed when the battery passes through the welding area 110; after the battery shell welding is completed, the clamping drive mechanism 430 can drive the battery bottom support 422 away from the battery top pressure seat 421, and no longer position the battery. At this time, the battery can be taken out of the battery fixture 420 to achieve the positioning or release of the battery.

[0049] In the embodiment, the clamping drive mechanism 430 includes a movable part 431 and an annular track 432. The annular track 432 is arranged on the machine base 100 and is coaxially arranged with the welding turntable 200. The battery base support 422 is rotatably connected to one end of the movable part 431. The other end of the movable part 431 is movably abutted against the annular track 432 and can move along the annular track 432. The movable part 431 can move relative to the welding turntable 200 along the direction of the rotation axis of the welding turntable 200. A pushing part is provided at a position of the annular track 432 corresponding to the welding area 110. When the battery rotation device 400 passes through the welding area 110, the pushing part pushes the movable part 431 and the battery base support 422 toward the battery top pressure seat 421, and makes the battery base support 422 and the battery top pressure seat 421 cooperate to clamp the battery. Specifically, the push portion is the arched portion of the annular track 432. When the welding turntable 200 rotates, the movable member 431 is driven to move along the annular track 432. When the battery rotation device 400 enters the welding area 110, the push portion pushes the movable member 431 to drive the battery bottom support seat 422 to approach the battery top pressure seat 421 along the rotation axis direction of the welding turntable 200, thereby clamping the battery; when the battery rotation device 400 leaves the welding area 110, the annular track 432 drives the movable member 431 and the battery bottom support seat 422 away from the battery top pressure seat 421. The rotation of the welding turntable 200 itself is used to drive the movable member 431 and the battery bottom support seat 422 to move closer to or away from the battery top pressure seat 421, without the need for an additional power source, simplifying the equipment structure and reducing the equipment cost. It is conceivable that the clamping drive mechanism 430 can also be other structures. For example, the clamping drive mechanism 430 adopts a structure that outputs linear power such as an electric cylinder or a pneumatic cylinder. The electric cylinder can drive the battery bottom support 422 to move closer to or away from the battery top pressure seat 421, so that the battery bottom support 422 and the battery top pressure seat 421 can clamp or release the battery.

[0050] Specifically, the battery base support 422 is indirectly slidably connected to the welding turntable 200 through the movable member 431, so as to move along the rotation axis direction of the welding turntable 200. The welding turntable 200 is provided with a guide hole, the movable member 431 is provided with a guide column, the guide column is slidably connected to the guide hole, and the battery base support 422 is rotatably connected to one end of the guide column. It is conceivable that the battery base support 422 can also be other structures, for example, the battery base support 422 is provided with a guide column, the welding turntable 200 is provided with a guide hole, the guide column is penetrated by the guide hole, so that the battery base support 422 can be movable along the rotation axis direction of the welding turntable 200, and one end of the guide column is rotatably connected to the movable member 431.

[0051] Specifically, the movable member 431 is rollingly connected to the annular track 432 via a transmission roller, thereby reducing the friction between the movable member 431 and the annular track 432. It is conceivable that the movable member 431 can also be directly connected to the annular track 432 by a sliding connection.

[0052] It is conceivable that the battery fixture 420 may also be other structures. For example, the battery fixture 420 is a battery base support 422, and a mounting groove is provided on the battery base support 422. The lower end of the battery is inserted into the mounting groove, and the battery is positioned by the lower end of the battery.

[0053] In the embodiment, the battery rotation device 400 further includes a limit driver 440 and two side limit frames 450, the two side limit frames 450 are respectively disposed on both radial sides of the battery placement position along the rotation axis, the two side limit frames 450 are movably disposed on the welding turntable 200, the limit driver 440 is disposed on the welding turntable 200 and is transmission-connected with the two side limit frames 450, and the limit driver 440 can drive the two side limit frames 450 to move closer to or away from each other. The side limit frames 450 are arranged on both radial sides of the battery placement position, when the battery rotates, the limit driver 440 can drive the two side limit frames 450 to move closer to each other and limit the lateral position of the battery, reduce the risk of shaking during battery rotation, and improve the stability of the circumferential side welding of the battery; when the limit driver 440 drives the two side limit frames 450 to move away from each other, the side limit frames 450 no longer limit the lateral position of the battery, and the battery at the battery placement position can be conveniently replaced.

[0054] Specifically, two limiting rollers 451 are provided on one side limiting frame 450, and one limiting roller 451 is provided on the other side limiting frame 450. The rotation axis of the limiting roller 451 is parallel to the rotation axis of the battery fixture 420, and the rotation axis of the battery fixture 420 is parallel to the rotation axis of the welding turntable 200. The three limiting rollers 451 are distributed around the rotation axis of the battery fixture 420. The side limiting frame 450 contacts the periphery of the battery through the limiting roller 451, so that when the battery rotates, the friction between the side limiting frame 450 and the periphery of the battery can be reduced as much as possible, reducing the risk of the side limiting frame 450 causing wear to the periphery of the battery.

[0055] It is understandable that two or more limiting rollers 451 may be provided on each side limiting frame 450 , and those skilled in the art may configure the specific configuration according to actual needs.

[0056] Specifically, the side limit frame 450 is provided with a slider, and the welding turntable 200 is provided with a slide rail, and the slider is slidably connected to the slide rail, so that the side limit frame 450 can move relative to the welding turntable 200. It is conceivable that a guide column can be provided on the welding turntable 200, and a guide sleeve can be provided on the side limit frame 450, and the guide column is inserted into the guide sleeve, so that the side limit frame 450 can move relative to the welding turntable 200.

[0057] Specifically, the limit drive 440 includes a limit cylinder 441, a separator 442 and an elastic member 443. The limit cylinder 441 is connected to the separator 442. The separator 442 is provided with a tapered portion. The elastic member 443 is a spring. The two ends of the spring are respectively connected to the two side limit frames 450. When the limit cylinder 441 is started, the separator 442 is driven to move, and the two side limit frames 450 are pushed away from each other through the tapered portion. At this time, the spring is stretched; after the limit cylinder 441 is closed, the spring applies force to drive the two side limit frames 450 to move closer to each other and reset. The above structure can realize the control of the two side limit frames 450 to move closer to or away from each other, and can make the abutment force between the two when the side limit frames 450 contact the periphery of the battery automatically adjusted to a relatively moderate. It is conceivable that the limit drive 440 can also be two limit cylinders 441, and the two limit cylinders 441 respectively drive the two side limit frames 450 to move, so as to move closer to or away from each other.

[0058] It is understandable that the battery rotation device 400 may not be provided with two side limit frames 450 , and the battery may be positioned vertically and laterally only by the battery top pressing seat 421 and the battery bottom supporting seat 422 .

[0059] In the embodiment, a loading mechanism 700 and a unloading mechanism 800 are also included. The loading mechanism 700 is disposed on the machine base 100 and can place the battery into the battery placement position of the battery rotation device 400. The unloading mechanism 800 is disposed on the machine base 100 and can take the battery out of the battery placement position of the battery rotation device 400. The loading mechanism 700 is provided to facilitate automatic loading of batteries to the welding turntable 200, and the unloading mechanism 800 is provided to facilitate automatic unloading of batteries to the welding turntable 200, thereby improving the automation degree and production efficiency of the equipment.

[0060] Specifically, the loading mechanism 700 includes a loading turntable 710, a material guide trough 720 and a loading arc guide plate 730. A plurality of battery loading positions 711 are evenly arranged on the periphery of the loading turntable 710. The rotation direction of the loading turntable 710 is opposite to that of the welding turntable 200. The movement trajectory of the battery loading position 711 is tangent to the movement trajectory of the battery placement position. One end of the material guide trough 720 is opposite to the periphery of the loading turntable 710. The loading arc guide plate 730 is arranged on the periphery of the loading turntable 710. The loading arc guide plate 730 is located between the material guide trough 720 and the welding turntable 200. The machine base 100 is provided with a welding arc guide plate 120 along the periphery of the welding turntable 200. The head end of the welding arc guide plate 120 is located between the loading turntable 710 and the welding turntable 200. The batteries to be welded are first arranged along the guide groove 720 and moved close to the loading turntable 710, and the batteries enter the battery loading position 711 of the loading turntable 710 one by one, and the loading arc guide plate 730 restricts the batteries from leaving the loading turntable 710; as the loading turntable 710 moves, when the battery loading position 711 coincides with the battery placement position, the loading arc guide plate 730 no longer restricts the batteries from leaving the loading turntable 710, and the batteries are guided by the welding arc guide plate 120 to leave the battery loading position 711, enter and stay in the battery placement position, thereby realizing automatic loading, with better loading continuity and faster loading speed.

[0061] Specifically, the loading turntable 710 is provided with twelve battery loading positions 711. It is conceivable that the loading turntable 710 may also be provided with three, four or more battery loading positions 711; the loading mechanism 700 may also use a manipulator to perform the loading operation.

[0062] Specifically, the unloading mechanism 800 includes an unloading turntable 810 and an arc-shaped unloading guide plate 820. A plurality of battery unloading positions 811 are evenly arranged on the periphery of the unloading turntable 810. The direction of the unloading turntable 810 is opposite to that of the welding turntable 200. The movement trajectory of the battery unloading position 811 is tangent to the movement trajectory of the battery placement position. The arc-shaped unloading guide plate 820 is arranged on the periphery of the unloading turntable 810. The head end of the arc-shaped unloading guide plate 820 is located between the unloading turntable 810 and the welding turntable 200. The end of the welding arc-shaped guide plate 120 is located between the welding turntable 200 and the unloading turntable 810. After the battery shell welding is completed, with the movement of the welding turntable 200, when the battery placement position coincides with the battery unloading position 811, the welding arc guide plate 120 no longer restricts the battery from escaping from the welding turntable 200, and the battery is guided by the unloading arc guide plate 820 to detach from the battery placement position, enter and stay at the battery unloading position 811, thereby realizing automated unloading, with better unloading continuity and faster unloading speed.

[0063] Specifically, the unloading turntable 810 is provided with twelve battery unloading positions 811. It is conceivable that the unloading turntable 810 may also be provided with three, four or more battery unloading positions 811; and the unloading mechanism 800 may also use a manipulator to perform unloading operations.

[0064] In the embodiment, two or more battery rotation devices 400 are provided, and all battery rotation devices 400 are evenly arranged around the rotation axis of the welding turntable 200. The plurality of battery rotation devices 400 are provided to facilitate continuous circumferential welding of the battery shell and improve the production efficiency of the equipment. It is conceivable that the battery rotation device 400 can also be provided with one, two, three or more, and those skilled in the art can configure it according to actual needs.

[0065] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0066] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery shell peripheral welding device, characterized in that: include: A machine base (100) is provided with a welding area (110); A turntable mechanism is arranged on the machine base (100), the turntable mechanism comprises a welding turntable (200) and a turntable driver, the welding turntable (200) is rotatably arranged on the machine base (100), and the turntable driver can drive the welding turntable (200) to rotate; A laser welding mechanism (300) is arranged on the machine base (100) and located on one radial side of the welding turntable (200); the laser welding mechanism (300) is provided with a welding focus, the position of the welding focus is adjustable within the welding area (110); and the laser welding mechanism (300) is capable of welding a workpiece located within the welding area (110); A battery rotation device (400) is arranged on the welding turntable (200), and the battery rotation device (400) comprises a rotation driver (410) and a battery fixture (420). The battery fixture (420) is rotatably arranged on the welding turntable (200), and the battery fixture (420) is provided with a battery placement position. The rotation driver (410) can drive the battery fixture (420) to rotate, and the welding turntable (200) can drive the battery rotation device (400) to pass through the welding area (110). When the battery rotation device (400) moves through the welding area (110), the battery fixture (420) rotates at least one circle.

2. The battery shell peripheral welding equipment according to claim 1, characterized in that: The machine base (100) is provided with a control module, and the control module is electrically connected to the turntable drive, the self-rotation drive (410) and the laser welding mechanism (300).

3. The battery shell peripheral welding equipment according to claim 2, characterized in that: The welding turntable (200) is provided with a turntable encoder, the turntable encoder is electrically connected to the control module, and the rotation speed of the turntable driver is proportional to the rotation speed of the self-rotation driver (410).

4. The battery shell peripheral welding equipment according to claim 1 or 2, characterized in that: The laser welding mechanism (300) is a three-dimensional galvanometer laser welding machine.

5. The battery shell peripheral welding equipment according to claim 1, characterized in that: Part of the outer periphery of the welding turntable (200) is located within the welding area (110), and the battery fixture (420) is arranged on the outer periphery of the welding turntable (200).

6. The battery shell peripheral welding equipment according to claim 1, characterized in that: The battery fixture (420) comprises a battery top pressing seat (421) and a battery bottom supporting seat (422), wherein the battery top pressing seat (421) and the battery bottom supporting seat (422) are arranged along the rotation axis direction of the welding turntable (200), and the battery placement position is formed between the battery top pressing seat (421) and the battery bottom supporting seat (422), and the self-rotating driver (410) is connected to the battery top pressing seat (421) and is used to drive the battery top pressing seat (421) ) rotates, the battery base support (422) is rotatably arranged on the welding turntable (200), the battery base support (422) is movably arranged on the welding turntable (200) along the rotation axis direction of the welding turntable (200) and can approach or move away from the battery top pressure seat (421), and the battery rotation device (400) also includes a clamping drive mechanism (430), and the clamping drive mechanism (430) is used to drive the battery base support (422) to move.

7. The battery casing peripheral welding device according to claim 6, characterized in that: The clamping drive mechanism (430) comprises a movable part (431) and an annular track (432); the annular track (432) is arranged on the machine base (100) and is coaxially arranged with the welding turntable (200); the battery base bracket (422) is rotatably connected to one end of the movable part (431); the other end of the movable part (431) is movably abutted against the annular track (432) and can move along the annular track (432); the movable part (431) can move along the welding turntable ( The rotation axis direction of the battery rotating device (400) moves relative to the welding turntable (200), and a pushing portion is provided at a position of the annular track (432) corresponding to the welding area (110). When the battery self-rotating device (400) passes through the welding area (110), the pushing portion pushes the movable part (431) and the battery bottom support seat (422) toward the battery top pressure seat (421), and enables the battery bottom support seat (422) and the battery top pressure seat (421) to cooperate and clamp the battery.

8. The battery casing peripheral welding device according to claim 6, characterized in that: The battery self-rotation device (400) further comprises a limit driver (440) and two side limit frames (450), wherein the two side limit frames (450) are disposed on both radial sides of the battery placement position along the rotation axis, and the two side limit frames (450) are movably disposed on the welding turntable (200). The limit driver (440) is disposed on the welding turntable (200) and is transmission-connected to the two side limit frames (450), and the limit driver (440) can drive the two side limit frames (450) to move closer to or farther from each other.

9. The battery shell peripheral welding equipment according to claim 1, characterized in that: It also includes a loading mechanism (700) and a unloading mechanism (800), wherein the loading mechanism (700) is arranged on the machine base (100) and can place the battery into the battery placement position of the battery rotation device (400), and the unloading mechanism (800) is arranged on the machine base (100) and can take the battery out of the battery placement position of the battery rotation device (400).

10. The battery shell peripheral welding equipment according to claim 1, characterized in that: At least two battery rotation devices (400) are provided, and all of the battery rotation devices (400) are evenly arranged around the rotation axis of the welding turntable (200).

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