Battery pack clamp tool

Abstract

The utility model relates to battery production and manufacturing equipment technical field, specifically disclose a kind of battery PACK clamp tool, including controller, the gantry with the mounting head of installation hoisting being equipped in top and pedestal, first distance sensor is equipped at the center position of carousel bottom, the worm and worm gear mechanism of carousel rotation is equipped in the inside of gantry;The carousel bottom is uniformly distributed with four equidistant distribution connecting seat, each connecting seat outside is equipped with electric push rod, and inside is equipped with clamping mechanism;The utility model rotates carousel by worm and worm gear mechanism drive, double distance sensor accurate positioning, electric push rod cooperation buffer guide rod assembly and pressure sensor realize flexible clamping, pass through keyway structure etc. to promote transmission stability, can effectively improve the security of battery PACK clamping, positioning and rotation accuracy, operation automation and intelligent level, enhance structural reliability and maintainability, and adaptability and universality are stronger.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing equipment technology, and specifically discloses a battery PACK fixture. Background Technology

[0002] In the manufacturing process of battery packs, fixtures are key equipment for achieving precise positioning, stable clamping, and efficient transfer of battery packs. Currently, existing technologies, such as the battery pack fixture disclosed in patent number CN 222361919U, mainly use a motor-driven rotating rod in conjunction with helical and arc-shaped grooves to achieve the rotation and movement of the clamping device, and utilize a cylinder to drive the clamping plate to clamp the battery pack. However, such traditional fixtures have many limitations in practical applications:

[0003] Relying on rigid cylinder drive and lacking a buffer structure, the battery pack casing is easily deformed or the internal cells are damaged due to instantaneous impact during clamping, especially for soft-pack or thin-cased battery packs, where the risk is even higher. The mechanical limiting structure using spiral and arc grooves has a fixed rotation angle, which cannot achieve stepless adjustment of the rotation angle according to different process requirements, making it difficult to adapt to diverse production scenarios. Without a sensor monitoring module, the clamping force cannot be fed back in real time, which can easily lead to over-clamping or loose clamping, affecting production safety and stability.

[0004] In view of the shortcomings of the existing technology, there is an urgent need for a battery PACK fixture that can achieve precise rotation adjustment, stable buffer clamping, real-time monitoring and feedback, and has a reliable structure, so as to meet the needs of efficient and safe battery production. Utility Model Content

[0005] This utility model proposes a battery PACK fixture. Through the coordinated design of worm gear drive, buffer clamping and controller, it realizes high-precision rotational positioning, flexible anti-damage clamping and real-time clamping force feedback adjustment of battery PACK, which significantly improves clamping stability and safety.

[0006] This utility model is implemented as follows: a battery PACK fixture includes a controller, a gantry frame with a lifting head on the top, and a base; a turntable is coaxially connected to the bottom of the base, a first distance sensor is provided at the center of the bottom of the turntable, and a worm gear mechanism for driving the turntable to rotate is provided inside the gantry frame.

[0007] The worm gear mechanism includes a meshing housing fixed to the top of the base, a worm wheel and a worm gear rotatably meshing with each other inside the meshing housing, a transmission shaft fixed to the turntable at the bottom of the worm wheel, a servo motor connected to one end of the worm gear, and four equally spaced connecting seats evenly distributed around the bottom of the turntable. Each connecting seat has an electric push rod on its outer side and a clamping mechanism on its inner side.

[0008] The clamping mechanism includes a drive seat, a clamping plate, a buffer guide rod assembly, a pressure sensor, a buffer pad, and a second distance sensor; the drive seat is fixedly connected to an electric push rod; the clamping plate is connected to the drive seat through the buffer guide rod assembly; the pressure sensor is located between the drive seat and the clamping plate; the buffer pad covers the clamping surface of the clamping plate, and the second distance sensor is embedded in the clamping plate and located below the buffer pad; the first distance sensor, the servo motor, the second distance sensor, the electric push rod, and the pressure sensor are all electrically connected to the controller.

[0009] As a preferred embodiment of the battery PACK fixture of this utility model, the buffer guide rod assembly includes a tube, a slide rod, and a spring. One end of the slide rod is slidably sleeved inside the tube, and the spring is sleeved on the outer wall of the tube and the slide rod. The tube is fixed to the drive seat, the slide rod is fixed to the clamping plate, and both ends of the spring abut against the drive seat and the clamping plate, respectively.

[0010] As a preferred embodiment of the battery PACK fixture of this utility model, the buffer pad is made of silicone or polyurethane material with a Shore hardness of 50A-70A and a thickness of 2-5mm.

[0011] As a preferred embodiment of the battery PACK fixture of this utility model, the top surface of the turntable is provided with an annular guide rail with a T-shaped cross section, and the bottom surface of the base is provided with a guide groove that fits with the annular guide rail with a clearance of 0.05-0.2mm.

[0012] As a preferred embodiment of the battery pack fixture of this utility model, the clamping surface of the clamping plate has a wavy, anti-slip toothed structure.

[0013] As a preferred embodiment of the battery pack fixture of this utility model, the drive shaft and the turntable are circumferentially fixed by a keyway structure.

[0014] The beneficial effects of this utility model are:

[0015] 1. Flexible clamping is achieved through the buffer guide rod assembly and silicone or polyurethane pads, combined with real-time monitoring by pressure sensors, effectively preventing damage to the battery pack casing or internal cells caused by hard impacts or over-clamping.

[0016] 2. The worm gear mechanism, in conjunction with a servo motor, enables stepless adjustment of the rotation angle, while the ring guide rail ensures smooth rotation, solving the problem of fixed angle limits in traditional mechanical systems and adapting to diverse production needs. The controller integrates sensors and drive components to achieve automatic control of clamping force and rotation angle, reducing manual intervention and improving production efficiency.

[0017] 3. Two distance sensors enable precise alignment between the clamp and the battery; the worm gear mechanism, in conjunction with the servo motor, enables stepless rotation adjustment from 0 to 360°, solving the problem of fixed angles in traditional mechanical limit switches. It is adaptable to diverse production processes, and the controller integrates multi-sensor signals and actuator control to achieve full automation of distance detection, height adjustment, force control clamping, and angle adjustment, reducing manual intervention and improving production efficiency and consistency.

[0018] 4. Four symmetrically distributed clamping mechanisms, in conjunction with wave-shaped toothed clamps, increase friction, prevent battery slippage, and ensure stability during transport or processing. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 for Figure 1 A schematic diagram of the AA-direction cross-section structure.

[0022] Figure 3 This is a schematic diagram of the clamping mechanism of this utility model.

[0023] Figure 4 This is a schematic diagram of the structure of the buffer guide rod assembly of this utility model;

[0024] Figure 5 This is a top view of the turntable, buffer guide rod assembly, and keyway structure of this utility model.

[0025] The markings in the diagram are as follows: 1. Mounting head; 2. Gantry frame; 3. Base; 4. Turntable; 5. First distance sensor; 6. Worm gear mechanism; 7. Meshing housing; 8. Worm gear; 9. Worm; 10. Drive shaft; 11. Servo motor; 12. Connecting seat; 13. Electric push rod; 14. Clamping mechanism; 15. Drive seat; 16. Clamping plate; 17. Buffer guide rod assembly; 18. Pressure sensor; 19. Buffer pad; 20. Second distance sensor; 21. Tube; 22. Slide rod; 23. Spring; 24. Circular guide rail; 25. Guide groove; 26. Keyway structure. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0027] Please see Figure 1-5 A battery pack fixture includes a controller, a gantry frame 2 with a lifting head 1 on the top, and a base 3; a turntable 4 is coaxially connected to the bottom of the base 3, a first distance sensor 5 is provided at the center of the bottom of the turntable 4, and a worm gear mechanism 6 for driving the turntable 4 to rotate is provided inside the gantry frame 2.

[0028] The worm gear mechanism 6 includes a meshing housing 7 fixed to the top of the base 3, a worm wheel 8 and a worm 9 rotatably meshing with each other inside the meshing housing 7, a transmission shaft 10 fixed to the turntable 4 at the bottom of the worm wheel 8, a servo motor 11 connected to one end of the worm 9, and four equally spaced connecting seats 12 evenly distributed around the bottom of the turntable 4. Each connecting seat 12 has an electric push rod 13 on its outer side and a clamping mechanism 14 on its inner side.

[0029] The clamping mechanism 14 includes a drive base 15, a clamping plate 16, a buffer guide rod assembly 17, a pressure sensor 18, a buffer pad 19, and a second distance sensor 20. The drive base 15 is fixedly connected to the electric push rod 13. The clamping plate 16 is connected to the drive base 15 through the buffer guide rod assembly 17. The pressure sensor 18 is located between the drive base 15 and the clamping plate 16. The buffer pad 19 covers the clamping surface of the clamping plate 16, and the second distance sensor 20 is embedded in the clamping plate 16 and located below the buffer pad 19. The first distance sensor 5, the servo motor 11, the second distance sensor 20, the electric push rod 13, and the pressure sensor 18 are all electrically connected to the controller.

[0030] In this embodiment: the first distance sensor 5 at the bottom center of the turntable 4 detects the vertical distance between the clamp and the battery PACK in real time, and transmits the data to the controller. The controller adjusts the height of the clamp through the lifting equipment to achieve precise alignment; the second distance sensor 20 of the clamping mechanism 14 detects the horizontal distance between the clamping plate 16 and the battery, providing initial position parameters for the clamping action; the electric push rod 13 drives the clamping mechanism 14 to approach the battery, and the spring 23 of the buffer guide rod assembly 17 is compressed at the moment of contact to form a flexible buffer; the pressure sensor 18 monitors the clamping force in real time and feeds it back to the controller. When the preset threshold is reached, the controller stops the electric push rod 13 to achieve "force-controlled" clamping and avoid over-clamping damage; the servo motor 11 drives the worm gear 9 to rotate, and drives the transmission shaft 10 and the turntable 4 to rotate through the meshing of the worm wheel 8 and the worm gear 9. The high transmission ratio and self-locking of the worm wheel 8 and the worm gear 9 are used to achieve stepless adjustment of the rotation angle and stable positioning; the precise cooperation between the annular guide rail 24 and the guide groove 25 ensures that the rotation process is smooth and without shaking.

[0031] As a technical optimization of this utility model, the buffer guide rod assembly 17 includes a tube 21, a slide rod 22 and a spring 23. One end of the slide rod 22 is slidably sleeved inside the tube 21, and the spring 23 is sleeved on the outer wall of the tube 21 and the slide rod 22. The tube 21 is fixed to the drive seat 15, the slide rod 22 is fixed to the clamping plate 16, and both ends of the spring 23 abut against the drive seat 15 and the clamping plate 16 respectively.

[0032] In this embodiment, the buffer guide rod assembly 17 achieves flexible buffering through the spring 23 and sliding engagement, avoiding hard impacts and enhancing clamping safety.

[0033] As a technical optimization of this utility model, the buffer pad 19 is made of silicone or polyurethane material with a Shore hardness of 50A-70A and a thickness of 2-5mm.

[0034] In this embodiment, the material and thickness of the buffer pad 19 are adapted to the battery protection requirements, which avoids damage and ensures clamping friction. It is preferably 3mm thick to adapt to battery packs with different shell hardness.

[0035] As a technical optimization of this utility model, the top surface of the turntable 4 is provided with a T-shaped cross-section annular guide rail 24, and the bottom surface of the base 3 is provided with a guide groove 25 that is in clearance fit with the annular guide rail 24, with a fit clearance of 0.05-0.2mm.

[0036] In this embodiment, the annular guide rail 24 and guide groove 25 improve rotational stability, reduce wobbling due to gaps, ensure rotational coaxiality, and improve positioning accuracy.

[0037] As a technical optimization of this utility model, the clamping surface of the clamping plate 16 is a wave-shaped anti-slip toothed structure.

[0038] In this embodiment: the wavy anti-slip toothed structure increases the contact friction and prevents the battery pack from slipping, which is especially suitable for battery casings with smooth surfaces.

[0039] As a technical optimization of this utility model, the transmission shaft 10 and the turntable 4 are circumferentially fixed by the keyway structure 26.

[0040] In this embodiment: the keyway structure 26 ensures the synchronous rotation of the drive shaft 10 and the turntable 4, avoiding relative slippage; improves transmission reliability, and ensures accurate transmission of rotation angle (the keyway structure 26 includes a key provided on the lower outer wall of the drive shaft 10 and a keyway provided on the turntable 4 that is adapted to the key, and the keyway and the key are rigidly connected).

[0041] Working principle and usage process of this utility model:

[0042] The lifting equipment moves the clamping fixture above the battery pack. The first distance sensor 5 at the center of the turntable 4 detects the vertical distance and sends feedback to the controller. The controller controls the lifting equipment to descend until the clamp and battery are at a preset clamping height (e.g., 5-11cm from the top of the battery). The second distance sensor 20 of the clamping mechanism 14 detects the initial distance between the clamping plate 16 and the side of the battery. The controller calculates the clamping stroke based on the battery size. The electric push rod 13 synchronously drives the four clamping mechanisms 14 to move inward, and the clamping plate 16 gradually approaches the battery. After the buffer pad 19 contacts the battery surface, the spring 23 of the buffer guide rod assembly 17 is compressed, and the pressure sensor 18 provides real-time feedback on the clamping distance. Holding force; when the clamping force reaches the preset value (e.g., 50-110N, adjusted according to battery type), the controller stops the electric push rod 13, completing stable clamping; according to process requirements (e.g., inspection, welding), the controller controls the servo motor 11 to run, driving the turntable 4 to rotate to the target angle (e.g., any angle from 0-360°) through the worm gear mechanism 6; after rotation to the target position, the worm gear 8 and worm 9 self-lock to ensure the angle is fixed; the lifting equipment transfers the clamped battery to the target workstation to complete assembly, inspection and other processes; after the process is completed, the controller controls the electric push rod 13 to run in reverse, and the clamping mechanism 14 releases the battery; the lifting equipment drives the clamp to rise and reset, waiting for the next operation.

[0043] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0044] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A battery pack fixture, comprising a controller, a gantry frame (2) with a mounting head (1) on top for mounting and lifting, and a base (3); characterized in that: The base (3) is coaxially connected to a turntable (4) at the bottom. A first distance sensor (5) is provided at the center of the bottom of the turntable (4). The gantry (2) is equipped with a worm gear mechanism (6) that drives the turntable (4) to rotate. The worm gear mechanism (6) includes a meshing housing (7) fixed on the top of the base (3), a worm wheel (8) and a worm (9) rotatably meshing with each other inside the meshing housing (7). The bottom of the worm wheel (8) is provided with a transmission shaft (10) fixedly connected to the turntable (4). One end of the worm (9) is connected to a servo motor (11). The bottom of the turntable (4) is evenly distributed with four equally spaced connecting seats (12). Each connecting seat (12) has an electric push rod (13) on its outer side and a clamping mechanism (14) on its inner side. The clamping mechanism (14) includes a drive seat (15), a clamping plate (16), a buffer guide rod assembly (17), a pressure sensor (18), a buffer pad (19), and a second distance sensor (20); the drive seat (15) is fixedly connected to the electric push rod (13); the clamping plate (16) is connected to the drive seat (15) through the buffer guide rod assembly (17); the pressure sensor (18) is located between the drive seat (15) and the clamping plate (16); the buffer pad (19) covers the clamping surface of the clamping plate (16), and the second distance sensor (20) is embedded on the clamping plate (16) and located below the buffer pad (19); the first distance sensor (5), the servo motor (11), the second distance sensor (20), the electric push rod (13), and the pressure sensor (18) are all electrically connected to the controller.

2. The battery pack fixture according to claim 1, characterized in that: The buffer guide rod assembly (17) includes a tube (21), a slide rod (22) and a spring (23). One end of the slide rod (22) is slidably sleeved inside the tube (21). The spring (23) is sleeved on the outer wall of the tube (21) and the slide rod (22). The tube (21) is fixed to the drive seat (15). The slide rod (22) is fixed to the clamping plate (16). Both ends of the spring (23) abut against the drive seat (15) and the clamping plate (16) respectively.

3. The battery pack fixture according to claim 1, characterized in that: The buffer pad (19) is made of silicone or polyurethane with a Shore hardness of 50A-70A and a thickness of 2-5mm.

4. The battery pack fixture according to claim 1, characterized in that: The top surface of the turntable (4) is provided with a T-shaped cross-section annular guide rail (24), and the bottom surface of the base (3) is provided with a guide groove (25) that is in clearance fit with the annular guide rail (24), with a fit clearance of 0.05-0.2mm.

5. The battery pack fixture according to claim 1, characterized in that: The clamping surface of the clamping plate (16) has a wavy, anti-slip toothed structure.

6. The battery pack fixture according to claim 1, characterized in that: The drive shaft (10) and the turntable (4) are circumferentially fixed by a keyway structure (26).

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