A lithium-ion battery spot welding device

Abstract

The application discloses a kind of lithium ion battery spot welding devices, including processing table, the top of the processing table is fixedly connected with fixed support, one side of the fixed support is equipped with sliding support, the inside of the sliding support is slidably connected with spot welding mechanism by sliding block, one side of the fixed support is equipped with first top rod, the bottom of the first top rod is equipped with connecting support, the bottom of the connecting support is equipped with positioning device;The positioning device includes: top cover, the top cover has arc structure, and the limiting sleeve is arranged at the bottom of the top cover, the inner side of the limiting sleeve is rotatably connected with rotary plate by bearing, and the application relates to lithium ion battery production technical field.The lithium ion battery spot welding device can prevent misplacement of nickel sheet and lithium ion battery polar plate, improve the welding efficiency of nickel sheet and lithium ion battery polar plate, and does not need manual continuous handheld nickel sheet, improve safety.

Description

Technical Field

[0001] This invention relates to the field of lithium-ion battery production technology, specifically to a lithium-ion battery spot welding device. Background Technology

[0002] Lithium-ion batteries are rechargeable batteries that primarily function by the movement of lithium ions between the positive and negative electrodes. During charging and discharging, Li+ ions repeatedly insert and extract between the two electrodes: during charging, Li+ ions extract from the positive electrode, pass through the electrolyte, and insert into the negative electrode, leaving the negative electrode in a lithium-rich state; the reverse occurs during discharging. Lithium-based batteries are divided into lithium batteries and lithium-ion batteries. Mobile phones and laptops use lithium-ion batteries, commonly referred to as lithium batteries. These batteries generally use materials containing lithium as electrodes and are representative of modern high-performance batteries. A "lithium battery" is a type of battery that uses lithium metal or lithium alloys as the negative electrode material and a non-aqueous electrolyte solution. Due to the highly reactive chemical properties of lithium metal, its processing, storage, and use require very strict environmental conditions. Therefore, lithium batteries were not widely used for a long time. With the development of science and technology, lithium batteries have now become mainstream, and they can be found in many everyday electrical appliances. During the production of lithium-ion batteries, nickel sheets are welded to the electrode plates using a spot welding machine.

[0003] Existing devices require manual, continuous hand-held welding of nickel sheets onto lithium-ion battery plates, which cannot prevent misalignment between the nickel sheets and the lithium-ion battery plates, thus reducing the welding efficiency. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides: a lithium-ion battery spot welding device, including a processing table, a fixed bracket fixedly connected to the top of the processing table, a sliding bracket installed on one side of the fixed bracket, a spot welding mechanism slidably connected inside the sliding bracket through a sliding block, a first top rod installed on one side of the fixed bracket, a connecting bracket installed at the bottom of the first top rod, and a positioning device installed at the bottom of the connecting bracket.

[0005] The positioning device includes:

[0006] The top cover has an arc-shaped structure and a limiting sleeve at the bottom of the top cover. A rotating plate is rotatably connected to the inner side of the limiting sleeve via a bearing. Annular slides are installed on both sides of the rotating plate. An arc-shaped return spring drives a first push rod to press tightly against the side of the annular slide. The distance the first push rod retracts into the top cover can be adjusted by controlling the rotation amplitude of the annular slide. When the clamped lithium-ion battery and nickel sheet are relatively wide, the distance the first push rod retracts into the top cover is smaller; conversely, the distance the first push rod retracts into the top cover is larger. This allows for adaptation to lithium-ion batteries and nickel sheets of the same size, improving the adaptability and compatibility of the device. A limiting plate is installed on one side of the annular slide, and a drive motor is installed on one side of the top cover.

[0007] A sliding control lever has a second rod body and a control sleeve disposed on the outside of the sliding control lever. An arc-shaped return spring is installed on one side of the control sleeve. A second push rod is fixedly connected to one end of the sliding control lever. A clamping device is installed at the end of the sliding control lever away from the second push rod. When the drive motor is turned on, the drive motor drives the rotating plate to rotate through the rotating shaft. The arc-shaped return spring continuously presses the sliding control lever and the second push rod against the side of the annular slide. When the annular slide rotates with the rotating plate, the second push rod gradually moves to the inclined surface of the annular slide. At this time, the arc-shaped return spring drags the sliding control lever through its own elasticity, causing the clamping device to slide into the top cover. The two sets of clamping devices simultaneously align the nickel sheet covering the lithium-ion battery electrode plate with the edge of the lithium-ion battery electrode plate, which can prevent misalignment between the nickel sheet and the lithium-ion battery electrode plate, improve the welding efficiency of the nickel sheet and the lithium-ion battery electrode plate, and eliminate the need for continuous manual holding of the nickel sheet, thus improving safety.

[0008] Preferably, the top of the limiting sleeve is fixedly connected to the bottom of the top cover, the output end of the drive motor is fixedly connected to the rotating plate via a rotating shaft, and the side of the rotating plate away from the drive motor is rotatably connected to the top cover via a rotating bracket.

[0009] Preferably, the control sleeve is sleeved on the outside of the sliding control rod and fixedly connected to the sliding control rod, and the end of the arc-shaped return spring away from the control sleeve is fixedly connected to the outside of the top cover.

[0010] Preferably, the end of the second push rod away from the sliding control rod extends to the side of the annular slide, and the end of the second push rod near the annular slide passes through the top cover and is slidably connected to the top cover.

[0011] Preferably, the clamping device includes a sliding plate with a limiting device installed on one side. A device frame is fixedly connected to the bottom of the sliding plate, and a rotating roller is rotatably connected to the inner wall of the device frame via a bearing. A roller is sleeved on the outer side of the rotating roller. A groove is formed at the bottom of the sliding plate near the device frame, and an electric telescopic rod is installed inside the groove. An arc-shaped extrusion plate is fixedly connected to the bottom of the electric telescopic rod, and a friction pad is installed at the bottom of the arc-shaped extrusion plate. When the first push rod is pulled to the inclined surface of the annular slide by the arc-shaped return spring, the sliding plate drives the roller to move along the processing table. Due to the friction between the rubber strip on the outer side of the roller and the processing table, the roller rolls along the processing table, replacing sliding friction with rolling friction. After the sliding plate clamps the nickel sheet and the lithium-ion battery electrode, the electric telescopic rod is activated to push the arc-shaped extrusion plate out of the groove, extruding the top of the roller and preventing the roller from rolling. This prevents the nickel sheet and the lithium-ion battery electrode from shaking during welding, improving the welding accuracy and efficiency.

[0012] Preferably, the side of the sliding plate near the limiting device is fixedly connected to the end of the sliding control rod, the roller is fixedly connected to the rotating roller, and a rubber strip is fixedly connected to the outside of the roller.

[0013] Preferably, the end of the electric telescopic rod near the arc-shaped extrusion plate extends to the bottom of the device frame, and the outer side of the roller extends to the bottom of the device frame.

[0014] Preferably, the limiting device includes a reinforcing sleeve, the inner wall of which has a groove. A movable column is slidably connected to the inside of the groove via a slider. One end of the movable column is fixedly connected to an arc-shaped spring, and another end of the movable column is fixedly connected to a limiting side plate. The arc-shaped spring uses its own elasticity to push the movable column to slide along the groove. The movable column causes the limiting side plate to press against the side of the nickel sheet and the lithium-ion battery electrode, increasing the friction between the device and the nickel sheet and the lithium-ion battery electrode, and further improving the practicality of the device.

[0015] Preferably, the sliding grooves are provided in two sets and symmetrically distributed on both sides of the inner wall of the reinforcing sleeve, both ends of the moving column penetrate the reinforcing sleeve, and the limiting side plate is provided at the end of the moving column away from the arc spring.

[0016] Preferably, a friction strip is fixedly connected to the side of the limiting side plate away from the moving column, and multiple sets of friction strips are provided.

[0017] This invention provides a lithium-ion battery spot welding device. It has the following beneficial effects:

[0018] 1. This lithium-ion battery spot welding device, through the installation of a positioning device, activates a drive motor, which drives a rotating plate to rotate via a rotating shaft. An arc-shaped return spring continuously presses the sliding control rod and the first push rod against the side of the annular slide. As the annular slide rotates with the rotating plate, the first push rod gradually moves to the inclined surface of the annular slide. At this time, the arc-shaped return spring drags the sliding control rod through its own elasticity, causing the clamping device to slide into the top cover. The two sets of clamping devices simultaneously align the nickel sheet covering the lithium-ion battery electrode plate with the edge of the lithium-ion battery electrode plate, preventing misalignment between the nickel sheet and the lithium-ion battery electrode plate, improving the welding efficiency of the nickel sheet and the lithium-ion battery electrode plate, eliminating the need for continuous manual holding of the nickel sheet, and improving safety.

[0019] 2. This lithium-ion battery spot welding device, through the installation of an annular slide table and a first push rod, with an arc-shaped return spring driving the first push rod to closely adhere to the side of the annular slide table, can adjust the distance of the first push rod retracting into the top cover by controlling the rotation amplitude of the annular slide table. When the clamped lithium-ion battery and nickel sheet are relatively wide, the distance of the first push rod retracting into the top cover is smaller, and vice versa. It can adapt to lithium-ion batteries and nickel sheets of the same size, improving the adaptability and compatibility of the device.

[0020] 3. This lithium-ion battery spot welding device, through the installation of a clamping device and a positioning device, when the first push rod is pulled to the inclined surface of the annular slide by the arc-shaped return spring, the sliding plate drives the roller to move along the processing table. Due to the friction between the rubber strip on the outside of the roller and the processing table, the roller rolls against the processing table, replacing sliding friction with rolling friction. After the sliding plate clamps the nickel sheet and the lithium-ion battery electrode, the electric telescopic rod is activated to push the arc-shaped extrusion plate out of the groove, extruding the top of the roller and preventing the roller from rolling. This prevents the nickel sheet and the lithium-ion battery electrode from shaking during welding, improving the welding accuracy and efficiency.

[0021] 4. This lithium-ion battery spot welding device, through the installation of a limiting device, uses the elastic force of an arc spring to push a moving column to slide along a groove. The moving column drives the limiting side plate to squeeze the side of the nickel sheet and the lithium-ion battery electrode, increasing the friction between the device and the nickel sheet and the lithium-ion battery electrode, and further improving the practicality of the device. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the lithium-ion battery spot welding device of the present invention;

[0023] Figure 2 This is a schematic diagram of the processing table of the present invention;

[0024] Figure 3 This is a schematic diagram of the positioning device of the present invention;

[0025] Figure 4 This is a schematic diagram of the sliding control lever of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the annular slide of the present invention;

[0027] Figure 6 This is a schematic diagram of the clamping device of the present invention;

[0028] Figure 7 This is a schematic diagram of the internal structure of the groove in this invention;

[0029] Figure 8 This is a schematic diagram of the internal structure of the limiting device of the present invention.

[0030] In the diagram: 1. Processing table; 2. Fixed bracket; 3. Sliding bracket; 4. Spot welding mechanism; 5. First push rod; 6. Connecting bracket; 7. Positioning device; 71. Top cover; 72. Limiting sleeve; 73. Rotating plate; 74. Annular slide table; 75. Limiting plate; 76. Drive motor; 77. Sliding control rod; 78. Control sleeve; 79. Clamping device; 791. Sliding plate; 792. Limiting device; 7921. Reinforcing sleeve; 7922. Slide groove; 7923. Slider; 7924. Moving column; 7925. Arc spring; 7926. Limiting side plate; 793. Device frame; 794. Rotating roller; 795. Roller; 796. Groove; 797. Electric telescopic rod; 798. Arc extrusion plate; 799. Friction pad; 710. Arc return spring; 711. Second push rod. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0032] Example 1

[0033] Please see Figures 1-5 The present invention provides a technical solution: a lithium-ion battery spot welding device, including a processing table 1, a fixed bracket 2 fixedly connected to the top of the processing table 1, a sliding bracket 3 installed on one side of the fixed bracket 2, a spot welding mechanism 4 slidably connected inside the sliding bracket 3 through a sliding block, a first top rod 5 installed on one side of the fixed bracket 2, a connecting bracket 6 installed at the bottom of the first top rod 5, and a positioning device 7 installed at the bottom of the connecting bracket 6.

[0034] Positioning device 7 includes:

[0035] The top cover 71 has an arc-shaped structure and a limiting sleeve 72 set at the bottom of the top cover 71. The inner side of the limiting sleeve 72 is rotatably connected to a rotating plate 73 via a bearing. Both sides of the rotating plate 73 are equipped with annular slides 74. A limiting plate 75 is installed on one side of the annular slides 74. A drive motor 76 is installed on one side of the top cover 71.

[0036] The sliding control lever 77 has a lever body and a control sleeve 78 disposed on the outside of the sliding control lever 77. An arc-shaped return spring 710 is installed on one side of the control sleeve 78. A second push rod 711 is fixedly connected to one end of the sliding control lever 77, and a clamping device 79 is installed at the end of the sliding control lever 77 away from the second push rod 711.

[0037] The top of the limiting sleeve 72 is fixedly connected to the bottom of the top cover 71. The output end of the drive motor 76 is fixedly connected to the rotating plate 73 through a rotating shaft. The side of the rotating plate 73 away from the drive motor 76 is rotatably connected to the top cover 71 through a rotating bracket.

[0038] The control sleeve 78 is sleeved on the outside of the sliding control rod 77 and is fixedly connected to the sliding control rod 77. The end of the arc-shaped return spring 710 away from the control sleeve 78 is fixedly connected to the outside of the top cover 71.

[0039] The end of the second push rod 711 away from the sliding control rod 77 extends to the side of the annular slide table 74, and the end of the second push rod 711 near the annular slide table 74 passes through the top cover 71 and is slidably connected to the top cover 71.

[0040] In use, the lithium-ion battery is placed on the processing table 1, and the nickel sheet is placed on the lithium-ion battery plate. The spot welding mechanism 4 is used to weld the nickel sheet onto the plate. The drive motor 76 is turned on, and the drive motor 76 drives the rotating plate 73 to rotate via the rotating shaft. The arc-shaped return spring 710 continuously presses the sliding control rod 77 and the second push rod 711 against the side of the annular slide table 74. As the annular slide table 74 rotates with the rotating plate 73, the second push rod 711 gradually moves to the inclined surface of the annular slide table 74. At this time, the arc-shaped return spring 710 drags the sliding control rod 77 with its own elasticity, causing the clamping device 79 to slide into the top cover 71. The two sets of clamping devices 79 simultaneously align the nickel sheet covering the lithium-ion battery plate with the edge of the lithium-ion battery plate, which can prevent misalignment between the nickel sheet and the lithium-ion battery plate, improve the welding efficiency of the nickel sheet and the lithium-ion battery plate, and eliminate the need for continuous manual handling of the nickel sheet, thus improving safety.

[0041] The arc-shaped return spring 710 drives the second push rod 711 to press against the side of the annular slide table 74. By controlling the rotation of the annular slide table 74, the distance at which the second push rod 711 retracts into the top cover 71 can be adjusted. When the clamped lithium-ion battery and nickel sheet are relatively wide, the distance at which the second push rod 711 retracts into the top cover 71 is smaller, and vice versa. This allows for the adaptation of lithium-ion batteries and nickel sheets of the same size, improving the adaptability and compatibility of the device.

[0042] Example 2

[0043] Please see Figures 1-8 The present invention provides a technical solution: Based on embodiment one, the clamping device 79 includes a sliding plate 791, a limiting device 792 is installed on one side of the sliding plate 791, a device frame 793 is fixedly connected to the bottom of the sliding plate 791, a rotating roller 794 is rotatably connected to the inner wall of the device frame 793 through a bearing, a roller 795 is sleeved on the outer side of the rotating roller 794, a groove 796 is opened at the bottom of the sliding plate 791 near the device frame 793, an electric telescopic rod 797 is installed inside the groove 796, an arc-shaped extrusion plate 798 is fixedly connected to the bottom of the electric telescopic rod 797, and a friction pad 799 is installed at the bottom of the arc-shaped extrusion plate 798.

[0044] The side of the sliding plate 791 near the limiting device 792 is fixedly connected to the end of the sliding control rod 77, the roller 795 is fixedly connected to the rotating roller 794, and a rubber strip is fixedly connected to the outside of the roller 795.

[0045] The electric telescopic rod 797 extends to the bottom of the device frame 793 at one end near the arc-shaped extrusion plate 798, and the outer side of the roller 795 extends to the bottom of the device frame 793.

[0046] The limiting device 792 includes a reinforcing sleeve 7921. The inner wall of the reinforcing sleeve 7921 is provided with a sliding groove 7922. The sliding groove 7922 is slidably connected to a movable column 7924 through a slider 7923. One end of the movable column 7924 is fixedly connected to an arc spring 7925, and one end of the movable column 7924 is fixedly connected to a limiting side plate 7926.

[0047] Two sets of sliding grooves 7922 are symmetrically distributed on both sides of the inner wall of the reinforcing sleeve 7921. Both ends of the moving column 7924 penetrate the reinforcing sleeve 7921. The limiting side plate 7926 is located at the end of the moving column 7924 away from the arc spring 7925.

[0048] A friction strip is fixedly connected to the side of the limiting side plate 7926 away from the moving column 7924, and multiple sets of friction strips are provided.

[0049] In use, when the second push rod 711 is pulled to the inclined surface of the annular slide table 74 by the arc-shaped return spring 710, the sliding plate 791 drives the roller 795 to move along the processing table 1. Due to the friction between the rubber strip on the outside of the roller 795 and the processing table 1, the roller 795 rolls against the processing table 1, replacing sliding friction with rolling friction. After the sliding plate 791 clamps the nickel sheet and the lithium-ion battery plate, the electric telescopic rod 797 is activated to push the arc-shaped extrusion plate 798 out of the groove 796. The roller 795 is pressed at the top to stop it from rolling, which prevents the nickel sheet and the lithium-ion battery plate from shaking during welding, thus improving the welding accuracy and efficiency. The arc spring 7925 uses its own elasticity to push the moving column 7924 to slide along the slide groove 7922. The moving column 7924 drives the limiting side plate 7926 to press the side of the nickel sheet and the lithium-ion battery plate, increasing the friction between the device and the nickel sheet and the lithium-ion battery plate, further improving the practicality of the device.

[0050] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A lithium-ion battery spot welding device, comprising a processing table (1), characterized in that: The top of the processing table (1) is fixedly connected to a fixed bracket (2), and a sliding bracket (3) is installed on one side of the fixed bracket (2). The sliding bracket (3) is slidably connected to a spot welding mechanism (4) through a sliding block. A first top rod (5) is installed on one side of the fixed bracket (2), and a connecting bracket (6) is installed at the bottom of the first top rod (5). A positioning device (7) is installed at the bottom of the connecting bracket (6). The positioning device (7) includes: The top cover (71) has an arc-shaped structure and a limiting sleeve (72) provided at the bottom of the top cover (71). The inner side of the limiting sleeve (72) is rotatably connected to a rotating plate (73) via a bearing. Both sides of the rotating plate (73) are equipped with annular slides (74). A limiting plate (75) is installed on one side of the annular slides (74). A drive motor (76) is installed on one side of the top cover (71). A sliding control lever (77) has a lever body and a control sleeve (78) disposed on the outside of the sliding control lever (77). An arc-shaped return spring (710) is installed on one side of the control sleeve (78). A second push rod (711) is fixedly connected to one end of the sliding control lever (77). A clamping device (79) is installed at the end of the sliding control lever (77) away from the second push rod (711). The top of the limiting sleeve (72) is fixedly connected to the bottom of the top cover (71). The output end of the drive motor (76) is fixed to the rotating plate (73) through a rotating shaft. The rotating plate (73) is rotatably connected to the top cover (71) via a rotating bracket on the side away from the drive motor (76). The control sleeve (78) is sleeved on the outside of the sliding control rod (77) and fixedly connected to the sliding control rod (77). The arc-shaped return spring (710) is fixedly connected to the outside of the top cover (71) at one end away from the control sleeve (78). The second push rod (711) extends to the side of the annular slide (74) at one end away from the sliding control rod (77). The end of the second push rod (711) near the annular slide (74) passes through the top cover (71) and is connected to the top cover (71). 1) Sliding connection, the clamping device (79) includes a sliding plate (791), a limiting device (792) is installed on one side of the sliding plate (791), a device frame (793) is fixedly connected to the bottom of the sliding plate (791), a rotating roller (794) is rotatably connected to the inner wall of the device frame (793) through a bearing, a roller (795) is sleeved on the outer side of the rotating roller (794), a groove (796) is opened at the bottom of the sliding plate (791) near the device frame (793), an electric telescopic rod (797) is installed inside the groove (796), the electric... An arc-shaped extrusion plate (798) is fixedly connected to the bottom of the telescopic rod (797). A friction pad (799) is installed at the bottom of the arc-shaped extrusion plate (798). The limiting device (792) includes a reinforcing sleeve (7921). A groove (7922) is provided on the inner wall of the reinforcing sleeve (7921). A movable column (7924) is slidably connected inside the groove (7922) through a slider (7923). An arc-shaped spring (7925) is fixedly connected to one end of the movable column (7924). A limiting side plate (7926) is fixedly connected to one end of the movable column (7924).

2. The lithium-ion battery spot welding device according to claim 1, characterized in that: The sliding plate (791) is fixedly connected to the end of the sliding control rod (77) on the side near the limiting device (792), the roller (795) is fixedly connected to the rotating roller (794), and a rubber strip is fixedly connected to the outside of the roller (795).

3. The lithium-ion battery spot welding device according to claim 1, characterized in that: The electric telescopic rod (797) extends to the bottom of the device frame (793) at one end near the arc-shaped extrusion plate (798), and the outer side of the roller (795) extends to the bottom of the device frame (793).

4. The lithium-ion battery spot welding device according to claim 1, characterized in that: The slide groove (7922) is provided in two sets and symmetrically distributed on both sides of the inner wall of the reinforcing sleeve (7921). Both ends of the moving column (7924) penetrate the reinforcing sleeve (7921). The limiting side plate (7926) is provided at the end of the moving column (7924) away from the arc spring (7925).

5. A lithium-ion battery spot welding device according to claim 1, characterized in that: The limiting side plate (7926) is fixedly connected to a friction strip on the side away from the moving column (7924), and multiple sets of the friction strip are provided.

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