Welding equipment

Abstract

The embodiment of the utility model provides welding equipment, and relates to the technical field of welding. The welding equipment comprises a mainframe box, a mechanical arm and a welding device, the mechanical arm comprises a connecting arm and a rocker arm, the connecting arm is movably connected to the mainframe box, and the rocker arm is rotatably connected to the connecting arm; the welding device is arranged on the rocker arm and is electrically connected with the mainframe box; and the mainframe box is used for controlling the welding device to weld the battery cell. The welding equipment is wide in welding range, high in flexibility and capable of conveniently entering an automobile chassis to directly weld the battery cell, intermediate links are reduced, and production efficiency is improved.

Description

Technical Field

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

[0002] In the welding process of the battery cells of new energy vehicles, due to the large chassis of the car and the influence of other components, the existing battery cell welding equipment has a narrow welding range and is mostly a fixed structure, which makes it inconvenient to enter the chassis to weld the battery cells. Usually, the battery cells are assembled into modules first, and then welded in the form of modules. The specific method is: assemble the battery cells into modules, then assemble the collector plates to connect the battery cells in series and parallel, and then use welding equipment to weld the modules. After the modules are welded, they form a battery pack, and the battery pack is assembled to the chassis of the car during the final assembly of the car.

[0003] However, this welding method involves many intermediate links, resulting in low production efficiency. Utility Model Content

[0004] The utility model aims to provide a welding device with a wide welding range and high flexibility, which can easily enter the automobile chassis and directly weld the battery core, thereby reducing intermediate links and improving production efficiency.

[0005] The embodiment of the utility model is achieved as follows:

[0006] In a first aspect, the utility model provides a welding device, comprising:

[0007] Main chassis;

[0008] A mechanical arm, the mechanical arm comprising a connecting arm and a rocker arm, the connecting arm being movably connected to the main chassis, and the rocker arm being rotatably connected to the connecting arm; and

[0009] A welding device is arranged on the rocker arm and is electrically connected to the main box; the main box is used to control the welding device to weld the battery core.

[0010] In an optional embodiment, there are multiple rocker arms, the connecting arm and the multiple rocker arms are rotatably connected in sequence, and the welding device is arranged on a side of the rocker arm away from the connecting arm.

[0011] In an optional embodiment, the robotic arm further includes a mounting plate, wherein the mounting plate is disposed on the rocker arm, and the welding device is movably connected to the mounting plate.

[0012] In an optional embodiment, a slide rail is provided on the mounting plate, and a slider is provided on the welding device, and the slider is slidably connected to the slide rail.

[0013] In an optional embodiment, the main chassis is provided with a sliding rod, and the connecting arm can be slidably mounted on the sliding rod.

[0014] In an optional embodiment, the welding device includes a mounting base and a galvanometer, a welding pressure head and a sensor arranged on the mounting base, the galvanometer and the sensor are electrically connected to the main box; the galvanometer and the welding pressure head are spaced apart.

[0015] In an optional embodiment, the welding device also includes a connected pressure head fixing block and a buffer structure, the pressure head fixing block and the buffer structure are both arranged on the mounting seat, the welding pressure head is arranged on the pressure head fixing block, and the buffer structure is spaced apart from the galvanometer.

[0016] In an optional embodiment, the welding device further comprises a handle, and the handle is disposed on the mounting seat.

[0017] In an optional embodiment, the main box includes a box body and a controller and a laser disposed in the box body, the controller is electrically connected to the laser, and the welding device is electrically connected to the controller and the laser at the same time; the connecting arm is movably connected to the box body.

[0018] In an optional embodiment, the main chassis also includes a water cooler, which is disposed in the chassis and electrically connected to the controller; the water cooler is simultaneously connected to the laser and the welding device to provide circulating cooling water for the laser and the welding device.

[0019] The beneficial effects of the embodiments of the utility model include:

[0020] The welding equipment includes a main box, a mechanical arm and a welding device. The mechanical arm includes a connecting arm and a rocker arm. The connecting arm is movably connected to the main box, and the rocker arm is rotatably connected to the connecting arm. The welding device is arranged on the rocker arm and is electrically connected to the main box. The main box is used to control the welding device to weld the battery cell. In other words, through the rotational connection between the rocker arm and the connecting arm, the welding device can have a larger movement angle, which can increase the welding coverage range. At the same time, the connecting arm can also move relative to the main box, and the height of the welding device can be adjusted, which is highly flexible. This facilitates the welding device to enter the chassis of the car and directly weld the battery cell, thereby reducing the intermediate links and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic structural diagram of a welding device provided by an embodiment of the utility model from a first perspective;

[0023] Figure 2 A schematic structural diagram of a welding device from a second viewing angle provided by an embodiment of the utility model;

[0024] Figure 3 A partial structural schematic diagram of a welding device provided in an embodiment of the utility model;

[0025] Figure 4 A partial structural schematic diagram of a welding device provided in an embodiment of the utility model.

[0026] Icons: 100-welding equipment; 10-main chassis; 11-slide bar; 12-box; 13-controller; 14-laser; 15-water cooler; 16-mouse; 17-keyboard; 20-mechanical arm; 21-connecting arm; 22-rocker arm; 23-mounting plate; 231-slide rail; 30-welding device; 31-slider; 32-mounting seat; 33-galvanometer; 34-welding pressure head; 35-sensor; 36-pressure head fixing block; 37-buffer structure; 371-spring; 372-fixed shaft; 373-limiting plate; 38-handle; 39-protective cover. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply 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 utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0031] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] As described in the background technology, in the welding process of the battery cells of new energy vehicles, due to the large chassis of the car and the influence of other components, the existing battery cell welding equipment has a narrow welding range and is mostly a fixed structure, which makes it inconvenient to enter the chassis to weld the battery cells. Usually, the battery cells are first assembled into modules and then welded in the form of modules. The specific method is: assemble the battery cells into modules, then assemble the collector plates to connect the battery cells in series and parallel, and then weld the modules with welding equipment. After the modules are welded, they form a battery pack, and the battery pack is assembled to the chassis of the car during the final assembly of the car. However, this welding method has many intermediate links, resulting in low production efficiency.

[0034] Based on this, please refer to Figure 1-Figure 4The embodiment of the utility model provides a welding device 100, which can effectively improve the above-mentioned technical problems, that is, it has a wide welding range and high flexibility, can easily enter the chassis of the car, directly weld the battery core, reduce the intermediate links, and improve production efficiency. The welding device 100 will be described in detail below.

[0035] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic structural diagram of the welding device 100 provided in this embodiment from a first perspective. Figure 2 A schematic diagram of the structure of the welding device 100 provided in the present embodiment from a second perspective, combined with Figure 1 and Figure 2 The welding equipment 100 includes a main box 10, a mechanical arm 20 and a welding device 30. The mechanical arm 20 includes a connecting arm 21 and a rocker arm 22. The connecting arm 21 is movably connected to the main box 10, and the rocker arm 22 is rotatably connected to the connecting arm 21. The welding device 30 is arranged on the rocker arm 22 and is electrically connected to the main box 10. The main box 10 is used to control the welding device 30 to weld the battery cell. In other words, through the rotation connection between the rocker arm 22 and the connecting arm 21, the welding device 30 can have a larger movement angle, which can increase the welding coverage range; at the same time, the connecting arm 21 can also move relative to the main box 10, and can adjust the height of the welding device 30, which is highly flexible; thus, it is convenient for the welding device 30 to enter the chassis of the car and directly weld the battery cell, thereby reducing the intermediate links and improving the production efficiency.

[0036] It should be noted that, in this embodiment, the moving direction of the connecting arm 21 is Figure 1 and Figure 2 The AB direction shown in FIG. 1 is the rotation direction of the rocker arm 22. Figure 1 The C direction and the D direction shown in the figure, or the direction opposite to the C direction and the direction opposite to the D direction.

[0037] In order to further increase the welding coverage range, there are multiple rocker arms 22, and the connecting arm 21 and the multiple rocker arms 22 are rotated and connected in sequence. The welding device 30 is arranged on the side of the rocker arm 22 away from the connecting arm 21, that is, the welding device 30 is arranged on the rocker arm 22 farthest from the connecting arm 21 among the multiple rocker arms 22; by rotating and connecting the multiple rocker arms 22 in sequence, the welding device 30 can be moved more conveniently, so that the welding device 30 has a larger moving stroke, thereby improving the welding coverage range to adapt to the battery core welding of automobile chassis of different specifications.

[0038] It should be noted that, in the present embodiment, there are two rocker arms 22. It is easy to understand that the rotation direction of the first rocker arm 22 is direction C or a direction opposite to direction C, and the rotation direction of the second rocker arm 22 is direction D or a direction opposite to direction D. Of course, in some other embodiments, the number of rocker arms 22 may also be three, four, or five, etc., and the specific number may be increased or decreased according to actual welding needs.

[0039] After operating the connecting arm 21 and the swing arm 22 to move the welding device 30 to the welding area, the welding device 30 needs to be pressed down to the battery cell for welding. In order to improve the accuracy of the welding device 30 moving further down to the battery cell, please refer to Figure 3 , Figure 3 A partial structural diagram of the welding device 100 provided in this embodiment, combined with Figure 3 In this embodiment, the robot arm 20 further includes a mounting plate 23, which is disposed on the rocker arm 22, and the welding device 30 is movably connected to the mounting plate 23. By moving the welding device 30 relative to the mounting plate 23, the accurate docking between the welding device 30 and the battery cell is further improved, so that the subsequent welding process has high accuracy.

[0040] It should be noted that, similarly, the moving direction of the welding device is Figure 3 AB direction shown in FIG. Specifically, in this embodiment, a slide rail 231 is provided on the mounting plate 23, and a slider 31 is provided on the welding device 30, and the slider 31 is slidably connected to the slide rail 231; that is, in this embodiment, the sliding cooperation between the slide rail 231 and the slider 31 is specifically used to realize the movement of the welding device 30 relative to the mounting plate 23. Of course, in other embodiments, the sliding connection can also be realized by providing a slide groove or the like; in addition, the welding device 30 can be driven to move relative to the mounting plate 23 by a motor or a cylinder or the like by a pulley transmission.

[0041] Please combine Figure 2 In this embodiment, the main box 10 is provided with a slide bar 11, and the connecting arm 21 is slidably mounted on the slide bar 11, that is, the connecting arm 21 achieves height adjustment of the welding device 30 by slidingly cooperating with the slide bar 11 provided on the main box 10. It is easy to understand that in other embodiments, a slide rail may be provided on the main box 10, and a slider may be provided on the connecting arm 21, and the movement of the connecting arm 21 relative to the main box 10 may also be achieved through the cooperation of the slide rail and the slider.

[0042] For further information, please refer to Figure 4 , Figure 4 A partial structural diagram of the welding device 30 provided in this embodiment, combined with Figure 3 and Figure 4The welding device 30 includes a mounting base 32 and a galvanometer 33, a welding pressure head 34 and a sensor 35 arranged on the mounting base 32. The galvanometer 33 and the sensor 35 are both electrically connected to the main box 10; the galvanometer 33 and the welding pressure head 34 are arranged at intervals.

[0043] It is easy to understand for those skilled in the art that the galvanometer 33 is an optical element used to change the direction of light. In the field of laser welding, the galvanometer 33 can control the swing or deflection of the laser beam and make the laser beam reach the welded part for subsequent welding. The welding head 34 is used to clamp the welding rod or welding wire, and through the action of the laser beam, for example, the battery cell tab and the collector plate are welded.

[0044] In addition, the sensor 35 is used to sense the welding focal length of the galvanometer 33. When the welding head 34 reaches the designated welding area and is located at the welding focal length point, the light of the sensor 35 turns on to indicate that the welding is ready, and the signal is transmitted to the main chassis 10, so that the main chassis 10 emits a laser beam and performs welding through the galvanometer 33.

[0045] In order to prevent the welding pressure head 34 from damaging the battery cell due to excessive force during the downward movement, in this embodiment, the welding device 30 also includes a pressure head fixing block 36 and a buffer structure 37 connected to each other. The pressure head fixing block 36 and the buffer structure 37 are both arranged on the mounting seat 32, the welding pressure head 34 is arranged on the pressure head fixing block 36, and the buffer structure 37 is arranged at intervals from the galvanometer 33. It is easy to understand that the pressure head fixing block 36 can be used to install the welding pressure head 34, and the buffer structure 37 can play a buffering role on the welding pressure head 34, thereby preventing damage to the battery cell.

[0046] It should be noted that due to the function of the sensor 35, the focal point position of the galvanometer 33 can be adjusted in advance, that is, the position of the welding pressure head 34 after being buffered by the buffer structure 37 and moving upward a certain distance, so that after buffering, the welding focal point can be identified and sensed by the sensor 35 to perform subsequent welding operations, thereby improving work efficiency and welding accuracy.

[0047] Specifically, the buffer structure 37 includes a spring 371, a fixed shaft 372 and a limit plate 373. The limit plate 373 is arranged on the mounting seat 32. The fixed shaft 372 is connected to the limit plate 373 and the pressure head fixing block 36 at the same time. The spring 371 is sleeved on the fixed shaft 372 and is located between the limit plate 373 and the pressure head fixing block 36. In other words, during the pressing process, the welding pressure head 34 will move toward the galvanometer 33 after contacting the battery cell, so that the pressure head fixing block 36 compresses the spring 371, and the spring 371 is supported by the limit plate 373, thereby playing a buffering role for the welding pressure head 34.

[0048] Please continue to combine Figure 3 and Figure 4 In order to facilitate the movement of the welding device 30, in the present embodiment, the welding device 30 also includes a handle 38, and the handle 38 is arranged on the mounting seat 32. It is easy to understand that the operator can pull the handle 38 to drive the welding device 30 to move to the welding area under the action of the rocker arm 22, which is convenient for operation.

[0049] Furthermore, in order to prevent the welding slag and other impurities generated during the welding process from affecting other components, in this embodiment, the welding device 30 further includes a protective cover 39, which is connected to the mounting seat 32 and is disposed on the welding pressure head 34; Figure 4 As shown, the protective cover 39 also covers the buffer structure 37, which can also reduce the impact of other components on the welding device 30 and the welding process to a certain extent.

[0050] Please continue to combine Figure 1 and Figure 2 Specifically, the main box 10 includes a box body 12, a controller 13 and a laser 14 disposed in the box body 12, the controller 13 is electrically connected to the laser 14, and the welding device 30 is electrically connected to the controller 13 and the laser 14 at the same time; the connecting arm 21 is movably connected to the box body 12. In this embodiment, the galvanometer 33 in the welding device 30 is electrically connected to the laser 14 and the controller 13 at the same time, that is, the laser 14 is used to provide energy and transmit the laser beam to the galvanometer 33, and the controller 13 can control the operation of the laser 14 and the galvanometer 33 at the same time.

[0051] Since the laser 14 and the galvanometer 33 generate high temperatures during operation, in order to dissipate heat for the two, in this embodiment, the main chassis 10 further includes a water cooler 15, which is disposed in the chassis 12 and electrically connected to the controller 13; the water cooler 15 is simultaneously connected to the laser 14 and the welding device 30, so as to provide circulating cooling water for the laser 14 and the welding device 30. That is, in this embodiment, the water cooler 15 is specifically connected to the galvanometer 33 of the welding device 30, and by providing circulating cooling water for the laser 14 and the galvanometer 33, the temperature of the two can be controlled, the stability during the welding process can be improved, and the service life of the laser 14 and the galvanometer 33 can be extended to a certain extent.

[0052] In order to facilitate the operation of the controller 13, the main box 10 may include a keyboard 17 and a mouse 16, both of which are arranged in the box body 12 and are electrically connected to the controller 13. Of course, in some embodiments, the controller 13 may also have a display screen to facilitate the operator to write welding programs, record corresponding data and other operations.

[0053] In summary, the embodiment of the utility model provides a welding device 100, which includes a main box 10, a mechanical arm 20 and a welding device 30, wherein the mechanical arm 20 includes a connecting arm 21 and a rocker arm 22, wherein the connecting arm 21 is movably connected to the main box 10, and the rocker arm 22 is rotatably connected to the connecting arm 21; the welding device 30 is arranged on the rocker arm 22 and is electrically connected to the main box 10; the main box 10 is used to control the welding device 30 to weld the battery cell. In other words, through the rotational connection between the rocker arm 22 and the connecting arm 21, the welding device 30 can have a larger movement angle, which can increase the welding coverage; at the same time, the connecting arm 21 can also move relative to the main box 10, and can adjust the height of the welding device 30, which is highly flexible; thus, it is convenient for the welding device 30 to enter the chassis of the car and directly weld the battery cell, thereby reducing the intermediate links and improving the production efficiency.

[0054] The above description is only a specific embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A welding device, characterized in that: include: Main chassis (10); A mechanical arm (20), the mechanical arm (20) comprising a connecting arm (21) and a rocker arm (22), the connecting arm (21) being movably connected to the main chassis (10), and the rocker arm (22) being rotatably connected to the connecting arm (21); and A welding device (30) is provided on the rocker arm (22) and is electrically connected to the main box (10); the main box (10) is used to control the welding device (30) to weld the battery core.

2. The welding device according to claim 1, characterized in that There are a plurality of rocker arms (22); the connecting arm (21) and the plurality of rocker arms (22) are rotatably connected in sequence; and the welding device (30) is arranged on a side of the rocker arm (22) away from the connecting arm (21).

3. The welding device according to claim 1, characterized in that The mechanical arm (20) further comprises a mounting plate (23), wherein the mounting plate (23) is arranged on the rocker arm (22), and the welding device (30) is movably connected to the mounting plate (23).

4. The welding device according to claim 3, characterized in that: The mounting plate (23) is provided with a slide rail (231), and the welding device (30) is provided with a slider (31), and the slider (31) is slidably connected to the slide rail (231).

5. The welding device according to claim 1, characterized in that: The main housing (10) is provided with a sliding rod (11), and the connecting arm (21) is slidably sleeved on the sliding rod (11).

6. The welding device according to claim 1, characterized in that The welding device (30) comprises a mounting seat (32), a galvanometer (33) arranged on the mounting seat (32), a welding pressure head (34) and a sensor (35); the galvanometer (33) and the sensor (35) are both electrically connected to the main chassis (10); the galvanometer (33) and the welding pressure head (34) are arranged at intervals.

7. The welding device according to claim 6, characterized in that The welding device (30) further comprises a pressure head fixing block (36) and a buffer structure (37) which are connected to each other; the pressure head fixing block (36) and the buffer structure (37) are both arranged on the mounting seat (32); the welding pressure head (34) is arranged on the pressure head fixing block (36); and the buffer structure (37) is arranged at a distance from the galvanometer (33).

8. The welding device according to claim 6, characterized in that The welding device (30) further comprises a handle (38), wherein the handle (38) is arranged on the mounting seat (32).

9. The welding device according to claim 1, characterized in that The main box (10) comprises a box body (12), a controller (13) and a laser (14) arranged on the box body (12), the controller (13) being electrically connected to the laser (14), and the welding device (30) being electrically connected to the controller (13) and the laser (14) at the same time; the connecting arm (21) is movably connected to the box body (12).

10. The welding device according to claim 9, characterized in that The main case (10) further comprises a water cooler (15), which is arranged on the case (12) and electrically connected to the controller (13); the water cooler (15) is simultaneously connected to the laser (14) and the welding device (30) to provide circulating cooling water for the laser (14) and the welding device (30).

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