Welding equipment for assembling lithium battery pack

Abstract

The invention discloses welding equipment for assembling a lithium battery pack, and particularly relates to the technical field of welding, the welding equipment comprises a machining table, a rotatable machining disc is arranged on the machining table, two to-be-welded parts are stacked in the middle of the machining disc, and the welding seam track of the two to-be-welded parts is in a regular polygon shape; the processing device further comprises a welding mechanism, the welding mechanism comprises a welding gun capable of moving linearly, the welding mechanism further comprises a sliding strip arranged in a sliding mode, a third driving piece is installed at the end of the sliding strip, the output end of the third driving piece is fixedly connected with the welding gun, and a first connecting rod is hinged to the bottom of the sliding strip. By arranging the welding mechanism and the slag scraping mechanism, in the welding process of the battery module frame and the supporting piece, a welding layer on the surface of a welded weld joint can be scraped and cleaned while a straight line edge of a welding track is welded, slag scraping treatment does not need to be conducted after welding is completed, and the working efficiency of the welding machine is improved.

Description

Technical Field

[0001] The present invention relates to the field of welding technology, and more specifically, to a welding device for assembling a lithium battery pack. Background Art

[0002] A lithium battery pack is a power system composed of multiple lithium-ion battery cells. The lithium battery pack mainly includes battery cells, a battery management system, and a protective battery unit (battery module frame). The battery cells are usually composed of multiple battery units, and these units can be connected in series or parallel to meet different voltage and capacity requirements. The battery management system is used to monitor and manage the charging and discharging of the battery pack to ensure the safety and performance of the battery. The protective battery unit is mainly used to prevent physical damage and the influence of the external environment. Lithium battery packs are widely used in portable electronic devices, electric vehicles, energy storage systems, etc.

[0003] During the assembly process of a lithium battery pack, it is usually necessary to weld them together by welding. For the welding of the battery module frame and the support member, in the battery module, a part of the frame or housing has a square structure. These square structures need to be welded to the support member or guide rail during assembly to enhance the mechanical strength and stability of the battery module, and the welding trajectory is usually rectangular. Currently, welding is usually carried out by intermittent welding. After welding one side, the position of the battery module frame and the support member is adjusted, and then other sides are welded. After welding is completed, it is usually necessary to manually scrape and clean the welding slag at the welding position, resulting in low work efficiency. Summary of the Invention

[0004] The welding device for assembling a lithium battery pack provided by the present invention aims to solve the problem that in the prior art, after welding the battery module frame and the support member, it is often necessary to manually scrape and clean the welding slag at the welding position, resulting in low work efficiency.

[0005] To achieve the above object, the present invention provides the following technical solution: A welding device for assembling a lithium battery pack, characterized in that it includes: a processing table, on which a rotatable processing disk is provided, and two workpieces to be welded are stacked and placed at the middle position of the processing disk, and the weld tracks of the two workpieces to be welded are regular polygons; The processing device further includes a welding mechanism, the welding mechanism includes a welding torch that can move linearly, and the welding mechanism further includes a sliding strip slidably arranged. A driving member three is installed at the end of the sliding strip, and the output end of the driving member three is fixedly connected to the welding torch. A connecting rod one is hinged at the bottom of the sliding strip. During welding, the connecting rod one pushes the welding torch to move linearly to weld the welding track; The processing device also includes a scraping mechanism, which includes a scraping bar that can move linearly, and the scraping mechanism also includes a sliding movable seat, in which the scraping bar is slidably arranged, and a second connecting rod is hinged on the movable seat, and an end of the first connecting rod away from the sliding bar is hinged to the movable seat. When scraping the slag, the second connecting rod pushes the scraping bar to move linearly to scrape and clean the weld layer on the surface of the weld after welding; During welding, the welding gun moves linearly to weld one straight line side of the welding track, driving the two parts to be welded to rotate an angle, and the welding gun resets linearly to weld the other straight line side of the welding track. At the same time, the scraper moves linearly to scrape and clean the weld layer at the welded weld position.

[0006] In a preferred embodiment, the processing device also includes a rotating mechanism, which is used to drive the processing disk to rotate. The rotating mechanism includes a driving member 2, and the output end of the driving member 2 is connected to a gear 1, on which a shifting rod is fixedly mounted, and a plurality of support rods are fixedly arranged on the processing disk. During welding, the shifting rod moves the support rod to rotate the processing disk.

[0007] In a preferred embodiment, the processing device also includes a swinging mechanism, which includes a rotatable gear 2, which is meshed with gear 1, a disc is fixedly provided on gear 2, a protrusion is fixedly provided on the disc, a horizontal axis is rotatably provided on the processing table, a connecting block is fixedly installed on the end of the horizontal axis, two abutment shafts are fixedly installed on the bottom of the connecting block, a side plate is fixedly installed on the other end of the horizontal axis, a round shaft is installed on the side plate, a sliding seat is provided on the outer movable sleeve of the round shaft, and the end of the connecting rod 2 away from the movable seat is hinged to the sliding seat.

[0008] In a preferred embodiment, the processing device also includes a paint spraying mechanism, which includes a fixed connecting frame, a connecting rod three is hinged on the connecting frame, a fixed block is fixedly installed on the side plate, a slider is slidably arranged in the fixed block, the connecting rod three is hinged to the slider, two air bags are arranged in the fixed block, the two air bags are connected to a paint spraying pipe, the two paint spraying pipes are fixedly arranged on the sliding seat, and the two paint spraying pipes are pointed to the welds of the two parts to be welded.

[0009] In a preferred embodiment, the processing device further comprises a locking mechanism, which comprises a slide groove, the slide groove is opened at the end of the movable seat, the scraper strip is slidably connected in the slide groove, and an elastic member 1 is arranged at the end of the scraper strip.

[0010] In a preferred embodiment, an insertion rod is slidably arranged in the movable seat, and inner cavity one and inner cavity two are opened in the movable seat. A fixing strip is fixedly arranged on the insertion rod, and the fixing strip extends into inner cavity one, and elastic member two is arranged on both sides of the fixing strip.

[0011] In a preferred embodiment, a first slide bar and a second slide bar are slidably disposed in the second inner cavity. One end of each of the first slide bar and the second slide bar, which are away from each other, extends outside the moving seat. The second slide bar is fixedly connected to the insertion rod. A pull wire is fixedly disposed on the first slide bar, and one end of the pull wire away from the first slide bar is fixedly connected to the second slide bar. A guide shaft is fixedly disposed in the second inner cavity, and the pull wire is located on one side of the guide shaft. Two side shafts are fixedly disposed on the processing table, and both side shafts are horizontally aligned with the moving seat.

[0012] In a preferred embodiment, a linear drive mechanism is provided on the processing disk. The linear drive mechanism includes a sliding groove opened on the top of the processing disk. A first driving member is installed on one side of the processing disk, and the output end of the first driving member is connected to a placement seat. Two workpieces to be welded are stacked and placed on the placement seat. A fixing frame is inserted into the placement seat, and the fixing frame is used to position the workpiece to be welded above.

[0013] In a preferred embodiment, the processing device further includes a grinding mechanism. The grinding mechanism includes a rotatable grinding block, and the grinding block contacts the end of the workpiece to be welded above. The grinding block is used to grind the end of the workpiece to be welded above.

[0014] In a preferred embodiment, the grinding mechanism further includes a fixing frame fixedly installed at the bottom of the second gear. An elastic member three is fixedly disposed at the bottom of the second gear, and the grinding block is slidably disposed at the bottom of the fixing frame.

[0015] The beneficial effects of the present invention are as follows: By providing a welding mechanism and a slag scraping mechanism, the present invention can, during the welding process of the battery module frame and the support member, while welding one straight edge of the welding track, scrape and clean the surface weld layer of the already welded weld seam, eliminating the need for slag scraping after welding and improving the working efficiency.

[0016] By providing a painting mechanism, the present invention can, after the welding and slag scraping operations are completed, perform a painting and rust prevention operation on the welding area, preventing the exposed metal surface at the welding area from being eroded by oxygen, water vapor, and other environmental factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the first perspective of the three-dimensional structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the second perspective of the three-dimensional structure of the present invention.

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the linear drive mechanism of the present invention.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the swing mechanism of the present invention.

[0021] Figure 5 This is a schematic three-dimensional structure diagram of the welding mechanism and slag scraping mechanism of the present invention.

[0022] Figure 6 It is Figure 4 an enlarged view of some structures in

[0023] Figure 7 a top-down sectional view when the scraping bar is in a stopped state Figure 1 .

[0024] Figure 8 It is a top-down sectional view during the moving state of the scraping bar.

[0025] Figure 9 a top-down sectional view when the scraping bar is in a stopped state Figure 2 .

[0026] Figure 10 It is Figure 8 an enlarged view of some structures in

[0027] Figure 11 This is a schematic three-dimensional structure diagram of the grinding mechanism of the present invention.

[0028] Reference numerals are: 100, workpiece to be welded; 1, processing table; 2, processing disk; 3, linear drive mechanism; 31, sliding groove; 32, drive member 1; 33, placement seat; 34, fixing frame; 4, rotation mechanism; 41, drive member 2; 42, gear 1; 43, dial rod; 44, support rod; 5, swing mechanism; 51, gear 2; 52, disk; 53, convex block; 54, horizontal axis; 55, connecting block; 56, abutting shaft; 57, side plate; 58, circular shaft; 59, sliding seat; 6, welding mechanism; 61, welding torch; 62, sliding bar; 63, connecting rod 1; 64, drive member 3; 7, slag scraping mechanism; 71, scraping bar; 72, moving seat; 73, connecting rod 2; 8, painting mechanism; 81, connecting frame; 82, connecting rod 3; 83, fixing block; 84, slider; 85, airbag; 86, painting pipe; 9, locking mechanism; 91, sliding groove; 92, elastic member 1; 93, inserting rod; 94, inner cavity 1; 95, fixing strip; 96, elastic member 2; 97, sliding rod 1; 98, inner cavity 2; 99, pulling wire; 910, guiding shaft; 911, sliding rod 2; 912, side shaft; 10, grinding mechanism; 101, fixing frame; 102, elastic member 3; 103, grinding block. Detailed implementation manners

[0029] The following further describes the present application in detail with reference to the accompanying drawings. It is necessary to point out here that the following detailed implementation manners are only used to further illustrate the present application and cannot be understood as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0030] Refer to the attached instruction manual Figures 1 to 5 Figures 1 to 5 , a welding device and processing technology for assembling a lithium battery pack, including: a processing table 1, on which a rotatable processing disk 2 is provided. Two workpieces to be welded 100 are stacked and placed at the middle position of the processing disk 2, and the weld track of the two workpieces to be welded 100 is a regular polygon; The processing device further includes a welding mechanism 6, and the welding mechanism 6 includes a welding torch 61 that can move linearly. The welding mechanism 6 is used to weld the welding track; The processing device further includes a slag scraping mechanism 7, and the slag scraping mechanism 7 includes a scraping bar 71 that can move linearly. The slag scraping mechanism 7 is used to scrape off the weld layer on the surface of the weld after welding; During welding, the welding torch 61 moves linearly to weld one side of the weld, drives the two workpieces to be welded 100 to rotate an angle, the welding torch 61 returns and moves linearly to weld another side of the weld. At the same time, the scraping bar 71 moves linearly to scrape and clean the weld layer at the welded weld position.

[0031] It should be noted that both of the two workpieces to be welded 100 are square structures, the weld track of the two workpieces to be welded 100 is a rectangle, the welding torch 61 is a welding torch 61 with automatic solder feeding, the processing disk 2 makes intermittent rotational motion, and the single rotation angle of the processing disk 2 is 90 degrees.

[0032] The implementation scenario is specifically as follows: Stack and fix the two workpieces to be welded 100 at the middle position of the processing table 1, and then through the linearly movable welding torch 61, move the welding torch 61 to perform welding processing on one side of the workpiece to be welded 100 close to the welding torch 61. Then the processing table 1 drives the workpiece to be welded 100 to rotate 90 degrees counterclockwise, so that the welded side is aligned with the movement track of the scraping bar 71, and at the same time the other side to be welded is aligned with the movement track of the welding torch 61. Then the welding torch 61 returns and moves linearly to weld the other side, and at the same time the scraping bar 71 moves linearly to scrape and clean the already welded weld layer. Repeat this process to weld and scrape the slag for the rectangular weld track, and while welding one straight side of the welding track, scrape and clean the weld layer on the surface of the already welded weld, without the need for slag scraping treatment after welding, improving its working efficiency.

[0033] It should also be noted that the single rotation angle of the workpiece to be welded 100 can be adjusted, which is applicable to the welding tracks of different workpieces to be welded 100. The single rotation angle of the workpiece to be welded 100 can be adjusted according to the actual situation, such as 60 degrees or 120 degrees, which is applicable to welding and processing different-shaped workpieces to be welded 100.

[0034] Furthermore, as Figure 5As shown, the scraper mechanism 7 also includes a sliding movable seat 72 , in which the scraper strip 71 is slidingly disposed. A second connecting rod 73 is hingedly connected to the movable seat 72 , and one end of the second connecting rod 73 away from the movable seat 72 is hingedly connected to the slide seat 59 .

[0035] It should be noted that when scraping slag, the movable seat 72 is pushed to move linearly by the second connecting rod 73, so that the movable seat 72 drives the scraper 71 to move linearly, and the welding layer at the welded weld position is scraped and cleaned, which is convenient for the subsequent painting treatment of the welding position.

[0036] Furthermore, if Figure 5 As shown, the welding mechanism 6 also includes a sliding bar 62, at the end of which a driving member 3 64 is installed, the output end of the driving member 3 64 is fixedly connected to the welding gun 61, and a connecting rod 1 63 is hinged at the bottom of the sliding bar 62, and the end of the connecting rod 1 63 away from the sliding bar 62 is hinged to the movable seat 72.

[0037] It should be noted that the driving member three 64 is an electric push rod, which drives the welding gun 61 to feed, which is convenient for welding. When the workpiece 100 to be welded needs to be rotated, the welding gun 61 can be driven to move away from the workpiece 100 to be welded, so as to avoid the welding gun 61 interfering with the rotation of the workpiece 100 to be welded, and when scraping the weld layer, the moving seat 72 moves to drive the scraper 71 to move to scrape the weld layer. At the same time, the sliding bar 62 is pushed to move through the connecting rod 1 63, driving the welding gun 61 to move in a straight line, so that the welding gun 61 can perform a mobile welding operation.

[0038] It should also be noted that the welding operation and the slag scraping operation are carried out simultaneously. When welding one side of the weld first, the welding gun 61 moves for welding. At this time, the scraper bar 71 moves the weld along the movement trajectory of the other side, so that the uncleaned dirt on the weld can be cleaned when the scraper bar 71 moves.

[0039] Furthermore, if Figure 1 As shown, the processing device also includes a rotating mechanism 4, which is used to drive the processing disk 2 to rotate. The rotating mechanism 4 includes a driving member 41. The output end of the driving member 41 is connected to a gear 42. A lever 43 is fixedly installed on the gear 42. A plurality of support rods 44 are fixedly provided on the processing disk 2. During welding, the lever 43 moves the support rod 44 to rotate the processing disk 2.

[0040] It should be noted that the number of support rods 44 is four. The processing disk 2 is supported and rotated by a rotating shaft and bearings, and a damper is provided at the rotating shaft so that the processing disk 2 can only rotate when an external force is applied. The second driving member 41 is a motor, and the motor drives the first gear 42 to rotate counterclockwise, causing the first gear 42 to drive the lever 43 to make a revolution, and when rotating, the lever 43 toggles the support rod 44 to drive the processing disk 2 to rotate counterclockwise. When the lever 43 separates from the support rod 44, the processing disk 2 just rotates counterclockwise by 90 degrees.

[0041] Furthermore, as Figure 5 shown, the processing device further includes a swing mechanism 5. The swing mechanism 5 includes a second gear 51 rotatably arranged. The second gear 51 meshes with the first gear 42. A disk 52 is fixedly arranged on the second gear 51, and a convex block 53 is fixedly arranged on the disk 52. A horizontal shaft 54 is rotatably arranged on the processing table 1. A connecting block 55 is fixedly installed at the end of the horizontal shaft 54. Two abutting shafts 56 are fixedly installed at the bottom of the connecting block 55. A side plate 57 is fixedly installed at the other end of the horizontal shaft 54. A circular shaft 58 is installed on the side plate 57, and a sliding seat 59 is movably sleeved on the outer side of the circular shaft 58.

[0042] It should be noted that the transmission ratio of the first gear 42 to the second gear 51 is 2:1. When the first gear 42 rotates one circle, the second gear 51 rotates half a circle. After the rotating mechanism 4 drives the processing disk 2 to rotate 90 degrees, the processing table stops. At the same time, the first gear 42 continues to rotate, causing the second gear 51 to continue to rotate and drive the disk 52 to rotate clockwise. When the disk 52 drives the convex block 53 to make a revolution during rotation, when the convex block 53 moves to contact the abutting shaft 56, the convex block 53 toggles the abutting shaft 56, and through the horizontally arranged shaft 54 and the connecting block 55, the horizontal shaft 54 rotates a certain angle, and at the same time, the horizontal shaft 54 drives the side plate 57 to swing an angle, and at the same time, the sliding seat 59 is toggled to move through the circular shaft 58. Furthermore, under the action of the first connecting rod 63 and the second connecting rod 73, the scraping bar 71 and the welding torch 61 can be pushed to move linearly at the same time for welding and slag scraping operations.

[0043] It also should be noted that the swing of the side plate 57 in the swing mechanism 5 is driven by the first gear 42 in the rotating mechanism 4. When the first gear 42 rotates, it is not only used to drive the rotation of the processing disk 2, but also used to drive the swing of the side plate 57.

[0044] In the above technical scheme, after welding the welded part 100, the weld layer at the weld can be scraped and cleaned. At present, after welding and cleaning, in order to improve its service life, it is usually necessary to spray anti-rust paint after welding to avoid rust at the weld. However, the exposed metal surface at the weld is easily corroded by oxygen, water vapor and other environmental factors. Therefore, in order to avoid oxidation at the weld, it is necessary to spray anti-rust paint on the cleaned weld as soon as possible. For this purpose, the present invention proposes a paint spraying mechanism 8 to solve the above problem.

[0045] Furthermore, if Figure 6 As shown, the processing device also includes a paint spraying mechanism 8, which includes a fixed connecting frame 81, a connecting rod three 82 is hinged on the connecting frame 81, a fixed block 83 is fixedly installed on the side plate 57, a slider 84 is slidably arranged in the fixed block 83, the connecting rod three 82 is hinged to the slider 84, two air bags 85 are arranged in the fixed block 83, the two air bags 85 are connected to the paint spraying pipe 86, the two paint spraying pipes 86 are fixedly arranged on the sliding seat 59, and the two paint spraying pipes 86 are pointed to the welds of the two parts 100 to be welded.

[0046] It should be noted that the two air bags 85 are connected to the box containing anti-rust paint through a one-way valve, and one-way valves are provided in the two paint spraying tubes 86 to facilitate negative pressure suction of anti-rust paint and paint spraying operation. The end of the paint spraying tube 86 close to the welded part 100 is a rubber tube, which can be bent under force and restore when the external force disappears. The end of the paint spraying tube 86 close to the air bag 85 is a soft hose, so that the paint spraying tube 86 can adapt to the movement of the air bag 85.

[0047] It should also be noted that after welding and scraping off the weld layer, the rotating mechanism 4 continues to drive the processing disk 2 to rotate, so that the side of the welded part 100 to be welded after the weld layer is scraped off rotates to a position close to the paint spraying mechanism 8, and then the rotating mechanism 4 drives the swinging mechanism 5 to swing the side plate 57, and while swinging, the slider 84 is pushed upward through the connecting rod 3 82, so that the slider 84 squeezes the air bag 85 located above, so that the paint spraying pipe 86 connected to the upper air bag 85 sprays out anti-rust paint, and the weld is painted and anti-rusted. When the side plate 57 swings to a vertical state, the slider 84 slides downward, squeezing the air bag 85 located below, so that the paint spraying pipe 86 connected to the lower air bag 85 sprays out anti-rust paint, and continues to paint and anti-rust the weld.

[0048] It should also be noted that under the action of the swing mechanism 5, while the side plate 57 swings, under the action of the round shaft 58, the round shaft 58 drives the slide 59 to move in a straight line, so that the slide 59 drives the paint spraying tube 86 to move in a straight line along the welding trajectory, so that the two paint spraying tubes 86 can be used to spray paint alternately, so as to fully spray paint on the welding point to prevent rust and avoid oxidation problems at the welding point.

[0049] It should also be noted that under the action of the swing mechanism 5, the welding mechanism 6, the slag scraping mechanism 7, and the painting mechanism 8 can simultaneously perform welding, slag scraping, and painting operations on two workpieces to be welded 100, further improving their working efficiency.

[0050] In addition, it should be noted that during the welding, slag scraping, and painting operations, after all four straight edges of the welding trajectory are welded, at this time, two straight edges have undergone slag scraping and painting operations, and at this time, the processing of the workpiece to be welded 100 is completed. These two straight edges are exposed during use. By scraping and painting these two straight edges, the rust prevention effect can be achieved, while the other two straight edges are not exposed during use, so there is no need to paint these two straight edges.

[0051] In the above technical solution, when the processing disk 2 rotates, in order to prevent the scraping bar 71 from interfering with the rotation of the workpiece to be welded 100, the scraping bar 71 is slidably arranged in the moving seat 72. However, when scraping the weld layer, it is necessary to ensure that the scraping bar 71 does not slide under force. For this purpose, the present invention proposes a locking mechanism 9 to solve the above problems.

[0052] Furthermore, as Figures 7 to 10 shown, the processing device further includes a locking mechanism 9. The locking mechanism 9 includes a chute 91, the chute 91 is opened at the end of the moving seat 72, the scraping bar 71 is slidably connected in the chute 91, an elastic member 92 is arranged at the end of the scraping bar 71, a plug rod 93 is slidably arranged in the moving seat 72, a cavity 94 and a cavity 98 are opened in the moving seat 72, a fixing bar 95 is fixedly arranged on the plug rod 93, the fixing bar 95 extends into the cavity 94, and elastic members 96 are arranged on both sides of the fixing bar 95. A sliding rod 97 and a sliding rod 911 are slidably arranged in the cavity 98. The ends of the sliding rod 97 and the sliding rod 911 away from each other both extend outside the moving seat 72, and the sliding rod 911 is fixedly connected to the plug rod 93. A pulling wire 99 is fixedly arranged on the sliding rod 97, one end of the pulling wire 99 away from the sliding rod 97 is fixedly connected to the sliding rod 911. A guiding shaft 910 is fixedly arranged in the cavity 98, the pulling wire 99 is located on one side of the guiding shaft 910, and two side shafts 912 are fixedly arranged on the processing table 1, and the two side shafts 912 are horizontally aligned with the moving seat 72.

[0053] It should be noted that both the elastic member 92 and the elastic member 96 are springs. As Figure 8 shown, it is the state of the scraping bar 71 during movement. At this time, the scraping bar 71 is not subject to other external forces except the force that pushes the scraping bar 71 to move and scrape the weld. At this time, the plug rod 93 is inserted into the scraping bar 71, ensuring the stability of the scraping bar 71 during movement. When pushing the scraping bar 71 to move until the scraping bar 71 stops, as Figure 7As shown, it is the state when the scraping strip 71 stops on one side. The side shaft 912 abuts against the insertion rod 93, and the side shaft 912 moves against the insertion rod 93, causing the insertion rod 93 to slide out of the scraping strip 71, thus releasing the fixation of the scraping strip 71. For example, Figure 9 As shown, it is the state when the scraping strip 71 stops on the other side. The side shaft 912 abuts against the first sliding rod 97. At this time, under the action of the pulling wire 99 and the second sliding rod 911, the insertion rod 93 is pulled to move by the second sliding rod 911, causing the insertion rod 93 to slide out of the scraping strip 71 and releasing the fixation of the scraping strip 71. Thus, when the scraping strip 71 stops and the processing disk 2 rotates, the scraping strip 71 can be extruded to slide within the moving seat 72, preventing the scraping strip 71 from interfering with the rotation of the workpiece to be welded 100. Moreover, during the process of the scraping strip 71 moving to scrape slag, the scraping strip 71 is in a fixed state with the moving seat 72. Therefore, the scraping strip 71 will not slide under the action of external forces during the slag scraping process, which is beneficial for processing and use.

[0054] It should also be noted that when the scraping strip 71 is in the stopped state, there is a certain gap between the end of the scraping strip 71 used to scrape the welding layer and the welding layer. When the moving seat 72 is driven to move the scraping strip 71 by pushing the second connecting rod 73, the moving seat 72 is first pushed to move, and at this time, the abutment against the insertion rod 93 is released. When the scraping strip 71 contacts the welding layer to scrape slag, the scraping strip 71 is already in a fixed state with the moving seat 72.

[0055] It should also be noted that when the moving seat 72 is driven to move the scraping strip 71 to scrape slag by pushing the second connecting rod 73, not only can the scraping strip 71 be driven to achieve the effect of scraping slag, but also when the moving seat 72 is pushed to move, the positioning and fixation of the scraping strip 71 can be achieved, ensuring that the scraping strip 71 will not slide during the moving process.

[0056] Furthermore, as Figure 3 shown, a linear driving mechanism 3 is provided on the processing disk 2. The linear driving mechanism 3 includes a sliding groove 31, which is opened at the top of the processing disk 2. A driving member 32 is installed on one side of the processing disk 2, and the output end of the driving member 32 is connected to a placing seat 33. Two workpieces to be welded 100 are stacked and placed on the placing seat 33. A fixing frame 34 is inserted into the placing seat 33, and the fixing frame 34 is used to position the upper workpiece to be welded 100.

[0057] It should be noted that the driving member 32 is an electric push rod, and a pneumatic fixture is provided on the placing seat 33. The pneumatic fixture is used to clamp and fix the lower workpiece to be welded 100. Then, another workpiece to be welded 100 is placed on the lower workpiece to be welded 100 and inserted into the fixing frame 34 to position the upper workpiece to be welded 100. Subsequently, the placing seat 33 is pushed to move by the electric push rod, causing the placing seat 33 to drive the workpiece to be welded 100 to move to the middle position of the processing disk 2.

[0058] Further, as Figure 11 shown, the processing device further includes a grinding mechanism 10. The grinding mechanism 10 includes a rotatable grinding block 103. The grinding block 103 contacts the end of the welding part 100 located above. The grinding block 103 is used to grind the end of the welding part 100 located above. The grinding mechanism 10 further includes a fixed frame 101. The fixed frame 101 is fixedly installed at the bottom of the second gear 51. An elastic member three 102 is fixedly arranged at the bottom of the second gear 51. The grinding block 103 is slidably arranged at the bottom of the fixed frame 101.

[0059] It should be noted that the elastic member three 102 is a spring. When the welding part 100 is moved to the middle position of the processing disk 2, the top end of the welding part 100 located above contacts the bottom of the grinding block 103, and under the action of the spring, a downward pressure is applied to the welding part 100 located above to further fix the welding part 100.

[0060] It should also be noted that during the rotation of the welding part 100 and the second gear 51, the second gear 51 drives the grinding block 103 to rotate. At this time, the end of the welding part 100 located above is in a friction state with the grinding block 103, and during the processing, the end of the welding part 100 located above can be ground to facilitate the subsequent welding process between the welding part 100 and other components.

[0061] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A welding device for assembling a lithium battery pack, characterized in that, include: A processing table (1), wherein a rotatable processing disc (2) is arranged on the processing table (1), two parts to be welded (100) are stacked and placed in the middle of the processing disc (2), and the weld seam tracks of the two parts to be welded (100) are regular polygons; The processing device also includes a welding mechanism (6), the welding mechanism (6) includes a welding gun (61) that can move linearly, the welding mechanism (6) also includes a sliding bar (62) that is slidably arranged, a driving member three (64) is installed at the end of the sliding bar (62), the output end of the driving member three (64) is fixedly connected to the welding gun (61), and a connecting rod one (63) is hinged at the bottom of the sliding bar (62). During welding, the connecting rod one (63) pushes the welding gun (61) to move linearly to weld the welding track; The processing device also includes a scraping mechanism (7), the scraping mechanism (7) includes a scraping bar (71) that can move linearly, and the scraping mechanism (7) also includes a sliding seat (72), the scraping bar (71) is slidingly arranged in the moving seat (72), a second connecting rod (73) is hinged on the moving seat (72), and an end of the first connecting rod (63) away from the sliding bar (62) is hinged to the moving seat (72), and when scraping slag, the second connecting rod (73) pushes the scraping bar (71) to move linearly to scrape and clean the welding layer on the surface of the weld after welding; During welding, the welding gun (61) moves linearly to weld a linear side of the welding track, driving the two welded parts (100) to rotate an angle, and the welding gun (61) moves linearly to weld another linear side of the welding track, while the scraper (71) moves linearly to scrape and clean the weld layer at the welded weld position.

2. The welding device for assembling a lithium battery pack according to claim 1, wherein: The processing device further comprises a rotating mechanism (4), the rotating mechanism (4) being used for driving the processing disk (2) to rotate, the rotating mechanism (4) comprising a second driving member (41), the output end of the second driving member (41) being connected to a first gear (42), a lever (43) being fixedly mounted on the first gear (42), a plurality of supporting rods (44) being fixedly arranged on the processing disk (2), and during welding, the lever (43) moves the supporting rods (44) to rotate the processing disk (2).

3. The welding device for assembling a lithium battery pack according to claim 2, wherein: The processing device further comprises a swing mechanism (5), the swing mechanism (5) comprising a second gear (51) rotatably arranged, the second gear (51) meshing with the first gear (42), a disc (52) fixedly arranged on the second gear (51), a protrusion (53) fixedly arranged on the disc (52), a transverse shaft (54) rotatably arranged on the processing table (1), a connecting block (55) fixedly mounted on the end of the transverse shaft (54), two abutment shafts (56) fixedly mounted on the bottom of the connecting block (55), a side plate (57) fixedly mounted on the other end of the transverse shaft (54), a round shaft (58) mounted on the side plate (57), a sliding seat (59) provided on the outer movable sleeve of the round shaft (58), and an end of the second connecting rod (73) away from the movable seat (72) being hinged to the sliding seat (59).

4. A welding device for assembling a lithium battery pack according to claim 3, characterized in that: The processing device further includes a painting mechanism (8). The painting mechanism (8) includes a fixedly arranged connecting frame (81). A third connecting rod (82) is hinged to the connecting frame (81). A fixed block (83) is fixedly installed on the side plate (57). A slider (84) is slidably arranged in the fixed block (83). The third connecting rod (82) is hinged to the slider (84). Two air bags (85) are arranged in the fixed block (83). Paint pipes (86) are communicated with both of the two air bags (85). The two paint pipes (86) are fixedly arranged on the sliding seat (59). The two paint pipes (86) both point to the welds of the two workpieces to be welded (100).

5. The welding device for assembling a lithium battery pack according to claim 4, characterized in that: The processing device further includes a locking mechanism (9). The locking mechanism (9) includes a sliding groove (91). The sliding groove (91) is opened at the end of the moving seat (72). A scraping strip (71) is slidably connected in the sliding groove (91). An elastic member I (92) is arranged at the end of the scraping strip (71).

6. The welding device for assembling a lithium battery pack according to claim 5, wherein: A plug rod (93) is slidably arranged in the moving seat (72). A first inner cavity (94) and a second inner cavity (98) are opened in the moving seat (72). A fixed strip (95) is fixedly arranged on the plug rod (93). The fixed strip (95) extends into the first inner cavity (94). Elastic members II (96) are arranged on both sides of the fixed strip (95).

7. A welding device for assembling a lithium battery pack according to claim 6, characterized in that: A first sliding rod (97) and a second sliding rod (911) are slidably arranged in the second inner cavity (98). The ends of the first sliding rod (97) and the second sliding rod (911) away from each other both extend out of the moving seat (72). The second sliding rod (911) is fixedly connected to the plug rod (93). A pulling wire (99) is fixedly arranged on the first sliding rod (97). One end of the pulling wire (99) away from the first sliding rod (97) is fixedly connected to the second sliding rod (911). A guiding shaft (910) is fixedly arranged in the second inner cavity (98). The pulling wire (99) is located on one side of the guiding shaft (910). Two side shafts (912) are fixedly arranged on the processing table (1). The two side shafts (912) are horizontally aligned with the moving seat (72).

8. A welding device for assembling a lithium battery pack according to claim 7, characterized in that: A linear driving mechanism (3) is arranged on the processing disc (2). The linear driving mechanism (3) includes a sliding groove (31). The sliding groove (31) is opened at the top of the processing disc (2). A first driving member (32) is installed on one side of the processing disc (2). The output end of the first driving member (32) is connected to a placing seat (33). The two workpieces to be welded (100) are stacked and placed on the placing seat (33). A fixing frame (34) is inserted into the placing seat (33). The fixing frame (34) is used for positioning the upper workpiece to be welded (100).

9. The welding equipment for assembling a lithium battery pack according to claim 8, wherein: The processing device further includes a grinding mechanism (10). The grinding mechanism (10) includes a rotatable grinding block (103). The grinding block (103) contacts the end of the upper workpiece to be welded (100). The grinding block (103) is used for grinding the end of the upper workpiece to be welded (100).

10. A welding device for assembling a lithium battery pack according to claim 9, characterized in that: The grinding mechanism (10) further includes a fixed frame (101), the fixed frame (101) is fixedly installed at the bottom of the second gear (51), a third elastic member (102) is fixedly arranged at the bottom of the second gear (51), and the grinding block (103) is slidably arranged at the bottom of the fixed frame (101).

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