Battery cell series connection sheet welding device

Abstract

The utility model provides a battery cell series connection sheet welding device, and relates to the technical field of connection sheet welding. The battery cell series connection piece welding device comprises a mechanical arm, the mechanical arm is used in cooperation with welding equipment, a mounting plate is mounted on the mechanical arm, a sliding rod is slidably connected into a sliding hole formed in the bottom of the mounting plate, a pressing plate is fixedly connected to the bottom of the sliding rod, and the outer side of the sliding rod is slidably sleeved with a first spring; the first spring is located between the pressing plate and the mounting plate, and an air hole used for exhausting air is formed in the bottom of the pressing plate. According to the battery cell series connection piece welding device, the pressing plate is arranged, the air holes are formed in the pressing plate, when the connection pieces are fixed, the connection pieces only need to be placed at the bottom of the pressing plate, the connection pieces are sucked in an air exhaust mode through the air holes, and therefore the connection pieces can be fixed, and the mechanism can fix the connection pieces of different sizes; in this way, the applicability of the battery cell series connection piece welding device for fixing the connection pieces can be effectively improved.

Description

Technical Field

[0001] This utility model relates to a battery cell series connecting piece welding device, specifically a battery cell series connecting piece welding device, belonging to the field of connecting piece welding technology. Background Technology

[0002] Electric vehicle batteries fall into two main categories: rechargeable batteries and fuel cells. Rechargeable batteries are suitable for pure electric vehicles and include lead-acid batteries, nickel-metal hydride batteries, sodium-sulfur batteries, secondary lithium batteries, air batteries, and ternary lithium batteries. Battery packs in new energy vehicles typically consist of multiple cells, with each cell's electrodes connected by connecting tabs to achieve conductivity. Due to the different arrangements of the cells, different shapes of connecting tabs are required, necessitating the welding of connecting tabs of various shapes.

[0003] Currently, during welding, a clamping mechanism is needed to fix and compress the connecting pieces to facilitate welding operations. However, due to the different shapes of the connecting pieces, the current clamping mechanism cannot be adapted to connecting pieces of different sizes. Therefore, during welding, the connecting pieces are prone to misalignment and displacement, affecting the welding effect. In addition, fixing the connecting pieces is also very troublesome. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The purpose of this invention is to provide a battery cell series connection piece welding device to solve the above-mentioned problems, thereby addressing the issue of low applicability of the clamping mechanism used in the existing battery cell series connection piece welding devices.

[0006] (II) Technical Solution

[0007] This utility model is achieved through the following technical solution: a welding device for series connection pieces of battery cells, including a robotic arm, which is used in conjunction with welding equipment. An mounting plate is installed on the robotic arm, and a sliding rod is slidably connected in a sliding hole at the bottom of the mounting plate. A pressure plate is fixedly connected to the bottom of the sliding rod, and a first spring is slidably sleeved on the outside of the sliding rod. The first spring is located between the pressure plate and the mounting plate. An air hole for evacuation is opened at the bottom of the pressure plate, and an air extraction mechanism communicating with the air hole is provided on one side of the robotic arm.

[0008] Preferably, two L-shaped clamping plates are slidably connected to the bottom of the pressure plate. The clamping plates have an L-shaped vertical cross-section. Two connecting rods are fixedly connected to one side of each clamping plate. The bottom corners of the two clamping plates facing each other are inclined. A stop block is fixedly connected to the movable end of each connecting rod. A fine groove is opened at the corresponding position of the pressure plate relative to the connecting rod. The connecting rod is slidably connected to the fine groove. A coarse groove is formed on the inner wall of the fine groove and is slidably connected to the stop block. A second spring is slidably sleeved on the outside of the connecting rod. The second spring is located in the cavity of the coarse groove. The outer diameter of the stop block is larger than the size of the cavity of the fine groove.

[0009] Preferably, the pressure plate includes a top plate and two adjusting plates, which are arranged in a mirror image symmetrically. The bottom of the top plate is provided with a sliding groove, and a bidirectional screw is rotatably connected to the inner wall of the sliding groove. The outer side of the bidirectional screw is provided with two external threads arranged in a mirror image symmetrically. Two sliders are threaded onto the outer threads of the bidirectional screw, and the two sliders are respectively threaded onto the two external threads. The sliders are slidably connected to the inner wall of the sliding groove, and the two sliders are respectively fixedly connected to the top of the two adjusting plates. The two clamping plates are respectively located on opposite sides of the two adjusting plates.

[0010] Preferably, a centering mechanism is provided on both sides of the pressure plate. The centering mechanism includes two gears and two staggered racks. The two gears are rotatably connected to one side of the two adjusting plates, and the racks are meshed with the gears. The two racks are located on both sides of the gears, and the opposite ends of the two racks are fixedly connected to one side of the two clamping plates.

[0011] Preferably, the air extraction mechanism includes a vacuum pump, a main hose, and two connecting hoses. The slide rod is fixedly connected to one end of each of the two connecting hoses. The movable ends of the two connecting hoses are fixedly connected to one side of each of the two adjusting plates. The two ends of the main hose are fixedly connected to the top of the slide rod and the air inlet of the vacuum pump, respectively. The vacuum pump used in this application is a purchased component, selected according to power and size requirements. This application will not elaborate further. The vacuum pump is electrically connected to a power source.

[0012] Preferably, a mounting ring is fixedly sleeved on the top end of the slide rod, the mounting ring is located above the mounting plate, and the outer diameter of the mounting ring is larger than the inner diameter of the slide hole.

[0013] Preferably, a base rod is fixedly connected to each of the two adjusting plates on opposite sides, the two base rods are staggered, and a bottom groove is provided at the corresponding position of the adjusting plate relative to the base rod, which is slidably connected to the base rod. The bottom of the base rod is flush with the bottom of the adjusting plate.

[0014] This utility model provides a welding device for series connection pieces of battery cells, which has the following beneficial effects:

[0015] 1. This battery cell series connecting piece welding device has a pressure plate with air holes. When fixing the connecting piece, simply place the connecting piece at the bottom of the pressure plate and use the air holes to suck in the air, thus fixing the connecting piece. This mechanism can fix connecting pieces of different sizes, which can effectively improve the applicability of the battery cell series connecting piece welding device for fixing connecting pieces.

[0016] 2. The battery cell series connecting piece welding device uses air holes to hold the connecting pieces in place, making the fixing and clamping of the connecting pieces very convenient and simple.

[0017] 3. The battery cell series connecting piece welding device has an adjustment plate, which can adjust the width of the pressure plate according to the size of the connecting piece, thus improving the applicability of the pressure plate.

[0018] 4. This cell series connector welding device uses clamping plates to stabilize the connectors in their attracted state and keep them centered. This facilitates stable positioning of the connectors and prevents them from shifting during fixing. The pressure plates further support the connectors, thus improving the welding stability and accuracy of the cell series connector welding device. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the entire utility model;

[0020] Figure 2 This is a three-dimensional schematic diagram of the clamping plate of this utility model;

[0021] Figure 3 This is a three-dimensional schematic diagram of the cooperation between the pressure plate and the slide bar of this utility model;

[0022] Figure 4 This is a schematic cross-sectional view of the mating structure of the air hole and the connecting hose of this utility model;

[0023] Figure 5 This is a cross-sectional structural diagram of the adjusting plate of this utility model;

[0024] Figure 6 This is a bottom-view perspective view of the top plate of this utility model;

[0025] Figure 7 This is a bottom-view perspective view of the adjustment plate of this utility model.

[0026] [Explanation of Key Component Symbols]

[0027] 1. Robotic arm; 2. Mounting plate; 3. Slide bar; 4. Pressure plate; 401. Top plate; 402. Adjusting plate; 5. Air vent; 6. Main hose; 7. Vacuum pump; 8. Clamping plate; 9. Connecting rod; 10. Stop block; 11. Gear; 12. Rack; 13. Double-acting screw; 14. Connecting hose; 15. Mounting ring; 16. Base rod. Detailed Implementation

[0028] This utility model provides a battery cell series connection plate welding device.

[0029] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The system includes a robotic arm 1, which is used in conjunction with welding equipment. A mounting plate 2 is installed on the robotic arm 1. A sliding rod 3 is slidably connected in a sliding hole at the bottom of the mounting plate 2. A pressure plate 4 is fixedly connected to the bottom of the sliding rod 3. A first spring is slidably sleeved on the outside of the sliding rod 3. The first spring is located between the pressure plate 4 and the mounting plate 2. An air hole 5 for evacuation is opened at the bottom of the pressure plate 4. An air extraction mechanism that communicates with the air hole 5 is provided on one side of the robotic arm 1.

[0030] Place the connecting piece at the bottom of the pressure plate 4, and use the air hole 5 to generate suction to hold the connecting piece in place and fix it stably at the bottom of the pressure plate 4. Then, use the robotic arm 1 to drive the pressure plate 4 to the welding position and use the pressure plate 4 to press the connecting piece in place to facilitate welding the connecting piece to the battery cell.

[0031] Please see Figure 5 Two L-shaped clamping plates 8 are slidably connected to the bottom of the pressure plate 4. The vertical cross section of the clamping plate 8 is L-shaped. Two connecting rods 9 are fixedly connected to one side of the clamping plate 8. The bottom corners of the two clamping plates 8 are inclined to the opposite side. A stop block 10 is fixedly connected to the movable end of the connecting rod 9. A fine groove is opened at the corresponding position of the pressure plate 4 relative to the connecting rod 9. The connecting rod 9 is slidably connected to the fine groove. A coarse groove is formed on the inner wall of the fine groove and is slidably connected to the stop block 10. A second spring is slidably sleeved on the outside of the connecting rod 9. The second spring is located in the cavity of the coarse groove. The outer diameter of the stop block 10 is larger than the size of the cavity of the fine groove.

[0032] When the connecting piece is fixed at the bottom of the pressure plate 4, it will push open the two clamping plates 8. The two clamping plates 8 work together to hold the connecting piece. The clamping force of the clamping plates 8 is not high, but it can ensure that the connecting piece is fixed and stable, and prevent the connecting piece from shifting or tilting on the pressure plate 4.

[0033] Please see Figure 3The pressure plate 4 includes a top plate 401 and two adjusting plates 402. The two adjusting plates 402 are arranged in a mirror image symmetrically. The bottom of the top plate 401 is provided with a sliding groove. A bidirectional screw 13 is rotatably connected to the inner wall of the sliding groove. Two external threads are arranged in a mirror image symmetrically on the outer side of the bidirectional screw 13. Two sliders are threaded on the outer threads of the bidirectional screw 13. The two sliders are threaded on the two external threads respectively. The sliders are slidably connected to the inner wall of the sliding groove. The two sliders are fixedly connected to the top of the two adjusting plates 402 respectively. The two clamping plates 8 are located on opposite sides of the two adjusting plates 402 respectively.

[0034] The distance between the two adjusting plates 402 is adjusted according to the size of the connecting piece, so that the pressure plate 4 can be adapted to connecting pieces of different sizes.

[0035] Please see Figure 2 Both sides of the pressure plate 4 are provided with a centering mechanism, which includes two gears 11 and two staggered rack rods 12. The two gears 11 are rotatably connected to one side of the two adjusting plates 402 respectively. The rack rods 12 are meshed with the gears 11 and are located on both sides of the gears 11 respectively. The opposite ends of the two rack rods 12 are fixedly connected to one side of the two clamping plates 8 respectively.

[0036] Through the cooperation of gear 11 and rack 12, the two clamping plates 8 can keep the object centered and upright when clamping it.

[0037] Please see Figure 1 The air extraction mechanism includes a vacuum pump 7, a main hose 6, and two connecting hoses 14. The slide rod 3 is fixedly connected to one end of each of the two connecting hoses 14. The movable ends of the two connecting hoses 14 are fixedly connected to one side of each of the two adjusting plates 402. The two ends of the main hose 6 are fixedly connected to the top of the slide rod 3 and the air inlet of the vacuum pump 7, respectively. The vacuum pump 7 used in this application is a purchased component, which is selected according to the power and size requirements. This application will not elaborate on it further. The vacuum pump 7 is electrically connected to the power supply.

[0038] The vacuum pump 7 generates suction, which in turn causes the air hole 5 to generate suction. The connecting pipe groove inside the adjusting plate 402 is connected to the air hole 5 and the connecting hose 14 groove on both sides of the inner wall of the connecting pipe groove.

[0039] Please see Figure 1 The top of the slide rod 3 is fixedly fitted with an installation ring 15, which is located above the mounting plate 2. The outer diameter of the installation ring 15 is larger than the inner diameter of the slide hole.

[0040] Please see Figure 7Each of the two adjusting plates 402 is fixedly connected to a base rod 16 on the opposite side. The two base rods 16 are staggered. The adjusting plate 402 has a bottom groove at the corresponding position of the base rod 16 that is slidably connected to the base rod 16. The bottom of the base rod 16 is flush with the bottom of the adjusting plate 402.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A battery cell series connection welding device, comprising a robotic arm (1), characterized in that: The robotic arm (1) is equipped with a mounting plate (2). A sliding rod (3) is slidably connected in a sliding hole at the bottom of the mounting plate (2). A pressure plate (4) is fixedly connected to the bottom of the sliding rod (3). A first spring is slidably sleeved on the outside of the sliding rod (3). The first spring is located between the pressure plate (4) and the mounting plate (2). An air hole (5) for evacuation is opened at the bottom of the pressure plate (4). An air extraction mechanism that communicates with the air hole (5) is provided on one side of the robotic arm (1).

2. The cell series connection welding device according to claim 1, characterized in that: The bottom of the pressure plate (4) is slidably connected to two L-shaped clamps (8). Two connecting rods (9) are fixedly connected to one side of the clamps (8). A stop block (10) is fixedly connected to the movable end of the connecting rod (9). A fine groove is opened at the corresponding position of the pressure plate (4) relative to the connecting rod (9). The connecting rod (9) is slidably connected to the fine groove. A coarse groove is formed on the inner wall of the fine groove and is slidably connected to the stop block (10). A second spring is slidably sleeved on the outside of the connecting rod (9). The second spring is located in the cavity of the coarse groove.

3. The cell series connection plate welding device according to claim 2, characterized in that: The pressure plate (4) includes a top plate (401) and two adjusting plates (402). The bottom of the top plate (401) is provided with a sliding groove. A bidirectional screw (13) is rotatably connected to the inner wall of the sliding groove. Two sliders are threaded on the outer side of the bidirectional screw (13). The sliders are slidably connected to the inner wall of the sliding groove, and the two sliders are respectively fixedly connected to the top of the two adjusting plates (402). The two clamping plates (8) are respectively located on opposite sides of the two adjusting plates (402).

4. The cell series connection plate welding device according to claim 3, characterized in that: The pressure plate (4) is provided with a centering mechanism on both sides. The centering mechanism includes two gears (11) and two rack rods (12) that are staggered. The two gears (11) are rotatably connected to one side of the two adjusting plates (402). The rack rods (12) are meshed with the gears (11) and are located on both sides of the gears (11). The opposite ends of the two rack rods (12) are fixedly connected to one side of the two clamping plates (8).

5. The cell series connection welding device according to claim 1, characterized in that: The air extraction mechanism includes a vacuum pump (7), a main hose (6) and two connecting hoses (14). The slide rod (3) is fixedly connected to one end of the two connecting hoses (14). The movable ends of the two connecting hoses (14) are fixedly connected to one side of the two adjusting plates (402). The two ends of the main hose (6) are fixedly connected to the top of the slide rod (3) and the air inlet of the vacuum pump (7).

6. The cell series connection welding device according to claim 1, characterized in that: The top end of the slide bar (3) is fixedly fitted with an installation ring (15), which is located above the mounting plate (2).

7. The cell series connection plate welding device according to claim 3, characterized in that: Each of the two adjusting plates (402) is fixedly connected to a base rod (16) on one side facing each other. The two base rods (16) are staggered. The adjusting plate (402) is provided with a bottom groove at the corresponding position of the base rod (16) and is slidably connected to the base rod (16).

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