A battery welding device

Abstract

This application discloses a battery welding device, including an operating platform. The operating platform is provided with a first connecting seat and a second connecting seat. A pressure head is mounted on the first connecting seat, and a sleeve adapted to the battery is mounted on the second connecting seat. The sleeve is used to mount the battery. The pressure head, sleeve, and battery are all coaxially distributed. The first connecting seat is slidably mounted on the operating platform. The sliding of the first connecting seat can drive the pressure head to slide synchronously. The pressure head slides closer to the sleeve to press the current collector plate against the end of the battery. The pressure head slides away from the sleeve to allow the battery to be detached from the sleeve. The coaxial distribution of the pressure head, sleeve, and battery eliminates the need to adjust the clamping concentricity, resulting in higher concentricity accuracy.

Description

Technical Field

[0001] This application relates to the field of battery production equipment technology, and more specifically to a battery welding apparatus. Background Technology

[0002] With the rapid development of the global new energy industry, lithium batteries, as a highly efficient and environmentally friendly energy storage solution, are increasingly widely used, covering multiple fields such as electric vehicles, portable electronic devices, and energy storage systems. The widespread application of lithium batteries has not only driven continuous technological advancements but also placed higher demands on battery production quality and safety. In the lithium battery production process, the assembly stage is one of the key steps to ensure battery performance and safety. The assembly process typically includes several steps such as flattening or pressing the cells, welding the current collector, overmolding, bottom penetration welding, sidewall welding, and sealing welding. Among these, sidewall welding is a crucial process for ensuring the integrity of the battery structure and the reliability of electrical connections. The main function of the sidewall welding device is to weld the negative electrode current collector to the battery casing using laser welding technology, thereby making the entire casing negatively charged. In existing technologies, sidewall welding devices typically use four rollers as a support structure, with the two ends of the battery secured by pressure blocks. The rotation of the battery is driven by the friction between the pressure roller and the soft pad, while the cylinder is used to press the battery into the appropriate position. This side wall welding device has problems such as the clamping force of the clamp being provided by the cylinder, resulting in low clamping accuracy and difficulty in adjusting concentricity. On the other hand, if the pressure of the pressure roller on the battery is too small, it will cause the pressure roller to spin freely, while if the pressure is too large, it will cause the battery shell to deform, thus affecting the welding effect and concentricity.

[0003] For example, the utility model patent with authorization announcement number CN220362162U discloses a welding fixture for a cylindrical battery current collector, which includes: a positive current collector positioning block, a first cell clamping block, a second cell clamping block, a negative current collector positioning block, a current collector pressure plate, a debugging pin, a positioning component, a guiding component, a limiting component, and a locking component; one side of the positive current collector positioning block is provided with a positive current collector limiting groove, and the positive current collector positioning block is also provided with a positive current collector welding port that penetrates the positive current collector limiting groove; the first cell clamping block is provided with a first semi-cylindrical groove, and the second cell clamping block is provided with a second semi-cylindrical groove; the negative current collector positioning block includes a first half block and a second half block that can form a circular cavity; the current collector pressure plate is provided with a negative current collector welding port and a negative current collector limiting structure. In this technical solution, the adjustment pin passes through the welding port of the negative electrode current collector and is inserted into the center hole of the current collector and the battery cell to adjust their concentricity. This concentricity adjustment method is cumbersome and complicated, requiring multiple manual adjustments to achieve the required concentricity, and the concentricity accuracy is low. On the other hand, every time the battery model is changed, the concentricity and clamping force of the fixture need to be readjusted, which greatly increases the downtime of the equipment and reduces production efficiency. Summary of the Invention

[0004] The technical problem to be solved by this application is to provide a battery welding device, which adds a sleeve and a pressure head for mounting the battery. The battery is positioned and installed by the sleeve, and the current collector is pressed against the end of the battery by the cooperation of the pressure head and the sleeve. The pressure head, the sleeve and the battery are all coaxially distributed, eliminating the need to adjust the clamping concentricity and achieving higher concentricity accuracy.

[0005] This application provides a battery welding apparatus, including an operating platform. The operating platform is provided with a first connecting seat and a second connecting seat. A pressure head is installed on the first connecting seat, and a sleeve adapted to the battery is installed on the second connecting seat. The sleeve is used to fit the battery. The pressure head, sleeve, and battery are all coaxially distributed. The first connecting seat is slidably installed on the operating platform. The sliding of the first connecting seat can drive the pressure head to slide synchronously. The pressure head slides closer to the sleeve to press the current collector plate against the end of the battery. The pressure head slides away from the sleeve to make the battery detachable relative to the sleeve.

[0006] In this technical solution, the operating platform mounts a pressure head via a first connecting seat and a sleeve via a second connecting seat. The first connecting seat can slide back and forth on the operating platform, causing the pressure head to move closer to or away from the sleeve. The current collector is pre-installed on the battery end. When the pressure head slides closer to the sleeve, it aligns with the central groove of the current collector, precisely pressing the current collector onto the battery end to ensure stability during welding. When the pressure head slides away from the sleeve, the battery can be easily removed from the sleeve, improving production efficiency. The pressure head and sleeve are coaxially distributed with the battery, using the same axis of the battery as a reference, ensuring the concentricity of the battery and current collector during welding, thereby improving welding accuracy and quality. No external force affects the concentricity of the battery and current collector during device operation. The battery is installed inside the sleeve, which positions and supports the battery, preventing it from deforming under pressure. The sliding mechanism of the first connecting seat makes the movement of the pressure head more flexible, allowing operators to quickly adjust the position of the pressure head to tighten or loosen the battery. The sliding adjustment does not affect the concentricity of the battery and the current collector, eliminating the need for complex debugging and adjustments, thus improving production efficiency. After a set of batteries and current collectors is welded, the battery only needs to be removed from the sleeve, and a new set of batteries and current collectors can be installed. There is no need to repeatedly adjust the concentricity or disassemble the pressure head and sleeve, making it more time-saving and labor-saving. This welding device, through its coaxial distribution and sliding adjustment design, achieves high-precision, high-flexibility, and high-efficiency welding clamping functions, making it more practical.

[0007] As an improvement, one end of the sleeve is provided with an opening for the battery to pass through, and the other end of the sleeve is provided with a linkage shaft. The sleeve is detachably connected to the second connecting seat via the linkage shaft. In this technical solution, the opening at one end of the sleeve is used for quick insertion and removal of the battery, making battery installation and removal easier. The linkage shaft at the other end of the sleeve is used for detachable connection to the second connecting seat, which facilitates the replacement of the sleeve according to different welding requirements or battery models. This improves the versatility and adaptability of the device. When changing battery models, only a sleeve with a diameter suitable for the battery model needs to be replaced. There is no need to adjust the height or concentricity of other components such as the pressure head, simplifying the changeover process, reducing the difficulty of manual operation, improving welding quality, and making it suitable for production scenarios of multiple battery models.

[0008] As an improvement, a push rod is movably installed inside the sleeve, and the push rod is used to push the battery out of the sleeve; one end of the push rod passes through the linkage shaft and is connected to a pushing mechanism. In this technical solution, by setting a push rod inside the sleeve, the push rod can move along the axial direction of the sleeve, so that the push rod can push the battery out of the sleeve when needed, realizing the quick removal of the battery. One end of the push rod passes through the linkage shaft and is connected to the pushing mechanism. The pushing mechanism provides power to the push rod, enabling it to complete the action of pushing out the battery. The pushing mechanism can be an electric push rod, a pneumatic push rod, or other similar linear drive device. The pushing mechanism is preferably a mini cylinder. The linkage design of the push rod and the pushing mechanism allows the battery to be quickly pushed out of the sleeve without manual removal, saving time and effort. Furthermore, the push rod and the pushing mechanism can provide uniform thrust, avoiding the battery bumping or damage that may be caused by manual removal, realizing the quick removal and automated removal of the battery, improving production efficiency and device versatility.

[0009] As an improvement, a first drive mechanism is provided on the operating platform. This first drive mechanism is connected to a linkage shaft, and drives the sleeve to rotate via the linkage shaft. In this technical solution, the first drive mechanism is mounted on the operating platform to provide power for the rotation of the sleeve. The first drive mechanism is connected to the sleeve via a linkage shaft, which transmits power from the drive mechanism to the sleeve. The transmission connection between the drive mechanism and the linkage shaft includes, but is not limited to, gear transmission, belt transmission, and coupling connection to ensure efficient power transmission, achieving automation and uniformity in the battery welding process, and improving welding efficiency and quality.

[0010] As an improvement, the first driving mechanism includes a first motor and a first transmission gear. The first transmission gear is mounted on the drive shaft of the first motor, and a second transmission gear is mounted on the linkage shaft. The first and second transmission gears mesh to connect the first driving mechanism to the linkage shaft. In this technical solution, the first driving mechanism consists of a first motor and a first transmission gear. The first transmission gear is mounted on the drive shaft of the first motor and serves as a direct power output component. The second transmission gear is mounted on the linkage shaft and meshes with the first transmission gear. This gear meshing ensures efficient power transmission from the motor to the linkage shaft. Through the combination of the first motor and the gear meshing transmission, the speed and torque of the linkage shaft can be precisely controlled, thereby achieving precise rotation of the sleeve. The first motor is preferably a servo motor to achieve precise motion control and improve welding quality.

[0011] As an improvement, a first connecting rod connected to the pressure head is installed on the first connecting seat. The pressure head is mounted on the first connecting seat via the first connecting rod, and a first bearing is provided between the first connecting rod and the first connecting seat. A second bearing is installed between the linkage shaft and the second connecting seat. In this technical solution, the pressure head is mounted on the first connecting seat via the first connecting rod and the first bearing, ensuring that the first connecting rod can smoothly and accurately transmit force and movement, enabling the pressure head to rotate efficiently. The linkage shaft is mounted on the second connecting seat via the second bearing, enabling the linkage shaft to rotate smoothly within the second connecting seat, reducing friction and wear during rotation. The use of the first and second bearings can improve the rotational accuracy and reliability of the pressure head and sleeve, ensuring smooth rotation and high concentricity of the pressure head and sleeve. Both the first and second bearings are coaxially arranged with the battery, ensuring the concentricity accuracy of the entire device in clamping the battery and the collector plate. Furthermore, the use of the first and second bearings can reduce noise and vibration during movement, improving the stability of the device operation.

[0012] As an improvement, the operating platform is provided with a first slide rail and a second slide rail distributed in parallel. One side of the first connecting seat is connected to the first slide rail, and the other side of the first connecting seat is connected to the second slide rail. In this technical solution, the first connecting seat is slidably installed via the first and second slide rails. The double slide rail design provides stable bidirectional support and guidance for the first connecting seat. Under the guidance of the double slide rails, the first connecting seat can move smoothly along a predetermined trajectory, reducing errors and vibrations during movement, improving the running stability of the pressure head, and increasing clamping efficiency.

[0013] As an improvement, a second driving mechanism is provided on the operating platform. This second driving mechanism is connected to the first connecting seat and is used to drive the first connecting seat to slide. In this technical solution, the second driving mechanism is installed on the operating platform, and its function is to provide power for the sliding of the first connecting seat. The connection between the second driving mechanism and the first connecting seat includes, but is not limited to, mechanical connections such as lead screws, sliders, and connecting rods, enabling precise control of the sliding position and speed of the first connecting seat, reducing manual operation, and improving production efficiency.

[0014] As an improvement, the second drive mechanism includes a second motor, a lead screw, and a nut assembly. The drive shaft of the second motor is connected to the lead screw, the nut assembly is threadedly connected to the lead screw, and the nut assembly is connected to the first connecting seat. The second motor drives the first connecting seat to slide through the cooperation of the lead screw and the nut assembly. In this technical solution, the drive shaft of the second motor transmits rotational motion to the lead screw. The lead screw and the nut assembly are threadedly connected, and the nut assembly is connected to the first connecting seat. When the second motor drives the lead screw to rotate, the nut assembly moves along the axial direction of the lead screw, thereby causing the first connecting seat to slide. The second motor is preferably a servo motor. Through precise control of the second motor, precise rotation of the lead screw can be achieved, and then precise linear movement of the first connecting seat can be achieved through the nut assembly, thereby achieving precise adjustment of the pressure head clamping force and improving production efficiency and accuracy.

[0015] As an improvement, the nut assembly includes a nut and a nut seat. The nut is installed inside the nut seat. The operating platform is provided with a clearance hole adapted to the nut seat. The nut seat passes through the clearance hole to be fixedly connected to the first connecting seat. The nut seat can slide back and forth along the clearance hole. In this technical solution, the nut assembly consists of a nut and a nut seat. The nut is installed inside the nut seat to form an integral unit, improving the stability and accuracy of the transmission. The clearance hole on the operating platform allows the nut seat to pass through the operating platform to connect to the first connecting seat and guides the sliding of the nut seat. The nut seat and the first connecting seat are fixedly connected to achieve integration. The fixed connection method includes, but is not limited to, bolts, welding, or clips, which is simple, reliable, and easy to install and maintain. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a battery welding device according to this application.

[0017] Figure 2 This is a three-dimensional structural schematic diagram of a battery welding device according to this application from another angle.

[0018] Figure 3 This is an exploded structural diagram of the pressure head, battery, current collector, and sleeve in this application.

[0019] The figure shows: 1. Operating platform; 11. First connecting seat; 111. First bearing; 12. Second connecting seat; 121. Second bearing; 13. First connecting rod; 14. First slide rail; 15. Second slide rail; 16. Clearance hole; 17. First mounting seat; 171. Third bearing; 18. Second mounting seat; 181. Fourth bearing; 2. Battery; 3. Collector plate; 4. Pressure head; 5. Sleeve; 51. Opening; 52. Linkage shaft; 53. Push rod; 54. Second transmission gear; 6. Pushing mechanism; 7. First drive mechanism; 71. First motor; 72. First transmission gear; 8. Second drive mechanism; 81. Second motor; 82. Lead screw; 83. Nut assembly. Detailed Implementation

[0020] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0021] In the accompanying drawings, the thickness, size, and shape of the objects have been slightly exaggerated for illustrative purposes. The drawings are for illustrative purposes only and are not drawn to scale.

[0022] It should also be understood that the terms "comprising," "including," "having," "containing," and "including," when used in this specification, indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof. The terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (the specific types and constructions may be the same or different), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0023] Furthermore, it should be noted that the terms "installation," "setting," "equipped with," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components; they can refer to a direct installation on another component or the possible presence of another intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] like Figures 1 to 3 As shown, this application discloses a battery welding device, including an operating platform 1. The operating platform 1 is provided with a first connecting seat 11 and a second connecting seat 12. A pressure head 4 is installed on the first connecting seat 11, and a sleeve 5 adapted to a battery 2 is installed on the second connecting seat 12. The sleeve 5 is used to fit the battery 2. The first connecting seat 11 is slidably installed on the operating platform 1. The pressure head 4 slides synchronously with the first connecting seat 11. The operating platform 1 is equipped with the pressure head 4 through the first connecting seat 11 and the sleeve 5 through the second connecting seat 12. The first connecting seat 11 can slide back and forth on the operating platform 1. A current collector 3 is pre-installed on the end of the battery 2. By sliding, the pressure head 4 moves closer to or away from the sleeve 5. When the pressure head 4 slides closer to the sleeve 5, the pressure head 4 is aligned with the middle groove of the current collector 3, which can accurately press the current collector 3 to the end of the battery 2 to ensure the stability during welding. When the pressure head 4 slides away from the sleeve 5, the battery 2 can be easily removed from the sleeve 5, which improves production efficiency.

[0025] The pressure head 4, sleeve 5, and battery 2 are all coaxially distributed, with the same axis of battery 2 as the reference, ensuring the concentricity of battery 2 and current collector 3 during welding, thereby improving welding accuracy and quality. No external force affects the concentricity of battery 2 and current collector 3 during device operation. Battery 2 is installed inside sleeve 5, which positions and supports battery 2, preventing deformation under pressure. The sliding mechanism of the first connecting seat 11 makes the movement of pressure head 4 more flexible, allowing operators to quickly adjust the position of pressure head 4 to achieve the desired welding performance for battery 2. Tightening or loosening the sliding adjustment will not affect the concentricity of battery 2 and current collector 3, eliminating the need for complex debugging and adjustment, thus improving production efficiency. After a set of batteries 2 and current collector 3 is welded, it is only necessary to remove battery 2 from sleeve 5 and then install a new set of batteries 2 and current collector 3. There is no need to repeatedly adjust the concentricity, nor is it necessary to disassemble and assemble parts such as pressure head 4 and sleeve 5, making it more time-saving and labor-saving. Through coaxial distribution and sliding adjustment design, this welding device achieves high-precision, high-flexibility and high-efficiency welding clamping functions, making it more practical.

[0026] More specifically, such as Figures 1 to 3 As shown, one end of the sleeve 5 is provided with an opening 51 for the battery 2 to pass through, and the other end of the sleeve 5 is provided with a linkage shaft 52. The sleeve 5 is detachably connected to the second connecting seat 12 through the linkage shaft 52. The opening 51 at one end of the sleeve 5 is used for quick insertion and removal of the battery 2, making battery 2 installation and removal easier. The linkage shaft 52 at the other end of the sleeve 5 is used for detachable connection to the second connecting seat 12, which facilitates the replacement of the sleeve 5 according to different welding requirements or battery 2 models, improving the versatility and adaptability of the device. When changing the battery 2 model, only the sleeve 5 with a diameter that matches the battery 2 model needs to be replaced. There is no need to adjust the height or concentricity of other components such as the pressure head 4, which simplifies the changeover process, reduces the difficulty of manual operation, and improves the welding quality. It is suitable for production scenarios of multiple battery 2 models.

[0027] More specifically, such as Figure 3As shown, a push rod 53 is movably installed inside the sleeve 5. The push rod 53 is used to push the battery 2 out of the sleeve 5. The push rod 53 can move along the axis of the sleeve 5, so that the push rod 53 can push the battery 2 out of the sleeve 5 when needed, realizing the quick removal of the battery 2. One end of the push rod 53 passes through the linkage shaft 52 and is connected to the push mechanism 6. The push mechanism 6 provides power to the push rod 53, enabling it to complete the action of pushing out the battery 2. The push mechanism 6 can be an electric push rod 53, a pneumatic push rod 53, or other similar linear drive devices. The push mechanism 6 uses a mini cylinder. The linkage design of the push rod 53 and the push mechanism 6 allows the battery 2 to be quickly pushed out of the sleeve 5 without manual removal, saving time and effort. In addition, the push rod 53 and the push mechanism 6 can provide a uniform pushing force, avoiding the possibility of bumping or damaging the battery 2 due to manual removal. This realizes the quick removal and automated removal of the battery 2, improving production efficiency and device versatility.

[0028] More specifically, such as Figure 1 and Figure 2 As shown, the operating platform 1 is equipped with a first drive mechanism 7, which is connected to the linkage shaft 52. The first drive mechanism 7 drives the sleeve 5 to rotate through the linkage shaft 52. The first drive mechanism 7 is installed on the operating platform 1 to provide power for the rotation of the sleeve 5. The first drive mechanism 7 is connected to the sleeve 5 through the linkage shaft 52, which plays the role of transmitting power, transferring the power of the drive mechanism to the sleeve 5. The transmission connection between the drive mechanism and the linkage shaft 52 includes, but is not limited to, gear transmission, belt transmission, coupling connection, etc., to ensure efficient power transmission, realize automation and uniformity in the welding process of battery 2, and improve welding efficiency and quality.

[0029] More specifically, such as Figure 1 and Figure 2 As shown, the first drive mechanism 7 includes a first motor 71 and a first transmission gear 72. The first transmission gear 72 is mounted on the drive shaft of the first motor 71, and a second transmission gear 54 is mounted on the linkage shaft 52. The first transmission gear 72 and the second transmission gear 54 mesh to make the first drive mechanism 7 and the linkage shaft 52 drive each other. The first drive mechanism 7 is composed of the first motor 71 and the first transmission gear 72. The first transmission gear 72 is mounted on the drive shaft of the first motor 71 as a direct component for power output. The second transmission gear 54 is mounted on the linkage shaft 52 and meshes with the first transmission gear 72. The gear meshing method ensures the efficient transmission of power from the motor to the linkage shaft 52. Through the combination of the first motor 71 and the gear meshing transmission, the speed and torque of the linkage shaft 52 can be precisely controlled, thereby realizing the precise rotation of the sleeve 5. The first motor 71 is a servo motor to achieve precise motion control and improve welding quality.

[0030] More specifically, such as Figure 1 and Figure 2 As shown, a first connecting rod 13 connected to the pressure head 4 is mounted on the first connecting seat 11. The pressure head 4 is mounted on the first connecting seat 11 via the first connecting rod 13. A first bearing 111 is provided between the first connecting rod 13 and the first connecting seat 11. A second bearing 121 is installed between the linkage shaft 52 and the second connecting seat 12. The pressure head 4 is mounted on the first connecting seat 11 via the first connecting rod 13 and the first bearing 111, ensuring that the first connecting rod 13 can smoothly and accurately transmit force and movement, enabling the pressure head 4 to rotate efficiently. The linkage shaft 52 is mounted on the second connecting seat 12 via the second bearing 121. The use of the first bearing 111 and the second bearing 121 can improve the rotational accuracy and reliability of the pressure head 4 and the sleeve 5, ensuring that the pressure head 4 and the sleeve 5 rotate smoothly and with high concentricity. The first bearing 111 and the second bearing 121 are both coaxially set with the battery 2, ensuring the concentricity accuracy of the entire device in clamping the battery 2 and the collector plate 3. In addition, the use of the first bearing 111 and the second bearing 121 can reduce noise and vibration during the movement process and improve the stability of the device operation.

[0031] More specifically, such as Figure 1 and Figure 2 As shown, the operating platform 1 is provided with a first slide rail 14 and a second slide rail 15 distributed in parallel. One side of the first connecting seat 11 is connected to the first slide rail 14, and the other side of the first connecting seat 11 is connected to the second slide rail 15. The first connecting seat 11 is slidably installed through the first slide rail 14 and the second slide rail 15. The double slide rail design provides stable bidirectional support and guidance for the first connecting seat 11. The first connecting seat 11 can move smoothly along a predetermined trajectory under the guidance of the double slide rails, reducing errors and vibrations during movement, improving the running stability of the pressure head 4, and improving clamping efficiency.

[0032] More specifically, such as Figure 1 and Figure 2 As shown, a second drive mechanism 8 is provided on the operating platform 1. The second drive mechanism 8 is connected to the first connecting seat 11. The second drive mechanism 8 is used to drive the first connecting seat 11 to slide. The second drive mechanism 8 is installed on the operating platform 1, and its function is to provide power for the sliding of the first connecting seat 11. The connection between the second drive mechanism 8 and the first connecting seat 11 includes, but is not limited to, mechanical connection methods such as lead screw, slider, and connecting rod, so as to realize precise control of the sliding position and speed of the first connecting seat 11, reduce manual operation, and improve production efficiency.

[0033] More specifically, such as Figure 1 and Figure 2As shown, the second drive mechanism 8 includes a second motor 81, a lead screw 82, and a nut assembly 83. The drive shaft of the second motor 81 is connected to the lead screw 82, and the nut assembly 83 is threadedly connected to the lead screw 82 and to the first connecting seat 11. The second motor 81 drives the first connecting seat 11 to slide through the cooperation of the lead screw 82 and the nut assembly 83. The drive shaft of the second motor 81 transmits rotational motion to the lead screw 82. The lead screw 82 and the nut assembly 83 are threadedly connected, and the nut assembly 83 is connected to the first connecting seat 11. When the second motor 81 drives the lead screw 82 to rotate, the nut assembly 83 moves axially along the lead screw 82, thereby causing the first connecting seat 11 to slide. The second motor 81 is preferably a servo motor. Through the precise control of the second motor 81, the precise rotation of the lead screw 82 can be achieved, and then the precise linear movement of the first connecting seat 11 can be achieved through the nut assembly 83, thereby achieving precise adjustment of the clamping force of the pressure head 4, improving production efficiency and production accuracy.

[0034] More specifically, such as Figure 1 and Figure 2 As shown, the operating platform 1 is equipped with a first mounting base 17 and a second mounting base 18 for mounting the lead screw 82. The first mounting base 17 and the second mounting base 18 cooperate to provide a stable mounting foundation for the lead screw 82, ensuring its stability during operation. One end of the lead screw 82 is fitted with a third bearing 171, and the other end of the lead screw 82 is fitted with a fourth bearing 181. The lead screw 82 is connected to the first mounting base 17 through the third bearing 171, and to the second mounting base 18 through the fourth bearing 181. The use of bearings reduces the friction between the lead screw 82 and the mounting base, improving transmission efficiency and operating accuracy. The other end of the lead screw 82 passes through the second mounting base 18 and is connected to the drive shaft of the second motor 81. The power of the second motor 81 can be directly transmitted to the lead screw 82, driving the lead screw 82 to rotate, thereby realizing the linear movement of the nut assembly 83. The overall operation is stable and efficient.

[0035] More specifically, such as Figure 1 and Figure 2 As shown, the nut assembly 83 includes a nut and a nut seat. The nut is installed in the nut seat. The operating platform 1 is provided with a clearance hole 16 that matches the nut seat. The nut seat passes through the clearance hole 16 to be fixedly connected to the first connecting seat 11. The nut seat can slide back and forth along the clearance hole 16. The nut assembly 83 is composed of a nut and a nut seat. The nut is installed in the nut seat to form an integral unit, which improves the stability and accuracy of the transmission. The clearance hole 16 on the operating platform 1 allows the nut seat to pass through the operating platform 1 to connect to the first connecting seat 11 and guides the sliding of the nut seat. The nut seat and the first connecting seat 11 are fixedly connected to achieve integration. The fixed connection method includes, but is not limited to, bolts, welding or snaps, which is simple, reliable and easy to install and maintain.

[0036] This application is not limited to the above-described preferred embodiments. Anyone can derive other products in various forms under the guidance of this application. However, regardless of any changes made to their shape or structure, any technical solution that is the same as or similar to that of this application falls within the protection scope of this application.

Claims

1. A battery welding apparatus, characterized in that, The system includes an operating platform (1), on which a first connecting seat (11) and a second connecting seat (12) are provided. A pressure head (4) is installed on the first connecting seat (11), and a sleeve (5) adapted to the battery (2) is installed on the second connecting seat (12). The sleeve (5) is used to fit the battery (2). The pressure head (4), the sleeve (5) and the battery (2) are all coaxially distributed. The first connecting seat (11) is slidably installed on the operating platform (1). The sliding of the first connecting seat (11) can drive the pressure head (4) to slide synchronously. The pressure head (4) slides closer to the sleeve (5) to press the collector plate (3) against the end of the battery (2). The pressure head (4) slides away from the sleeve (5) to make the battery (2) detachable relative to the sleeve (5).

2. The battery welding apparatus according to claim 1, characterized in that, One end of the sleeve (5) is provided with an opening (51) for the battery (2) to pass through, and the other end of the sleeve (5) is provided with a linkage shaft (52). The sleeve (5) is detachably connected to the second connecting seat (12) through the linkage shaft (52).

3. The battery welding apparatus according to claim 2, characterized in that, A push rod (53) is movably installed inside the sleeve (5), and the push rod (53) is used to push the battery (2) out of the sleeve (5); one end of the push rod (53) passes through the linkage shaft (52) and is connected to the push mechanism (6).

4. The battery welding apparatus according to claim 2, characterized in that, The operating platform (1) is provided with a first driving mechanism (7), which is connected to the linkage shaft (52) for transmission. The first driving mechanism (7) drives the sleeve (5) to rotate through the linkage shaft (52).

5. The battery welding apparatus according to claim 4, characterized in that, The first drive mechanism (7) includes a first motor (71) and a first transmission gear (72). The first transmission gear (72) is mounted on the drive shaft of the first motor (71). A second transmission gear (54) is mounted on the linkage shaft (52). The first transmission gear (72) and the second transmission gear (54) mesh to make the first drive mechanism (7) and the linkage shaft (52) drive each other.

6. The battery welding apparatus according to claim 2, characterized in that, The first connecting seat (11) is equipped with a first connecting rod (13) connected to the pressure head (4). The pressure head (4) is installed on the first connecting seat (11) through the first connecting rod (13). A first bearing (111) is provided between the first connecting rod (13) and the first connecting seat (11). A second bearing (121) is installed between the linkage shaft (52) and the second connecting seat (12).

7. The battery welding apparatus according to claim 1, characterized in that, The operating platform (1) is provided with a first slide rail (14) and a second slide rail (15) that are distributed in parallel. One side of the first connecting seat (11) is connected to the first slide rail (14), and the other side of the first connecting seat (11) is connected to the second slide rail (15).

8. A battery welding apparatus according to claim 1 or 7, characterized in that, The operating platform (1) is provided with a second driving mechanism (8), which is connected to the first connecting seat (11). The second driving mechanism (8) is used to drive the first connecting seat (11) to slide.

9. The battery welding apparatus according to claim 8, characterized in that, The second drive mechanism (8) includes a second motor (81), a lead screw (82), and a nut assembly (83). The drive shaft of the second motor (81) is connected to the lead screw (82), the nut assembly (83) is threadedly connected to the lead screw (82), and the nut assembly (83) is connected to the first connecting seat (11). The second motor (81) drives the first connecting seat (11) to slide through the cooperation of the lead screw (82) and the nut assembly (83).

10. The battery welding apparatus according to claim 9, characterized in that, The nut assembly (83) includes a nut and a nut seat. The nut is installed in the nut seat. The operating platform (1) is provided with a clearance hole (16) adapted to the nut seat. The nut seat passes through the clearance hole (16) to be fixedly connected to the first connecting seat (11). The nut seat can slide back and forth along the clearance hole (16).

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