A battery replacement auxiliary device for a new energy vehicle

Abstract

The application discloses a battery replacement auxiliary device of a new energy vehicle and belongs to the technical field of new energy vehicles. The battery replacement auxiliary device comprises a platform unit and a carrier module. The carrier module comprises a carrier vehicle group, a transmission shell group and a bolt head assembly. The carrier vehicle group realizes battery lifting, positioning and replacement through a plate vehicle, a lifting plate and a carrier sliding plate which slides horizontally. The sleeve shell body in the bolt head assembly is fixed to the top of the cylinder shell body. The bolt head is longitudinally slidably arranged in the sleeve shell body. The cylinder shell body in the transmission shell group has any degree of freedom in the circumferential direction relative to the shaft rod. The position of the sleeve shell body and the bolt head can be adaptively adjusted. The application realizes the steps of battery transfer and secondary positioning through the carrier sliding plate. After lifting, the bolt can be directly installed back, the battery replacement period is shortened, the elastic mechanism between the shaft rod and the cylinder shell body can compensate for the chassis height and bolt misalignment caused by vehicle deformation, and the elastic guide rod group is arranged in the sleeve shell body. Mechanical alignment can be realized by using the constraint of the countersunk bolt hole wall.

Description

Technical Field

[0001] This invention belongs to the field of new energy vehicle technology, specifically relating to a battery replacement auxiliary device for new energy vehicles. Background Technology

[0002] Battery swapping auxiliary devices for new energy vehicles are specialized equipment or tooling used to help new energy vehicles quickly swap power battery packs. Their main function is to remove, receive, and move the old battery out during the battery swapping process, and to lift, align, and install the new battery at the bottom of the vehicle. Typical forms include pit-type or lifting-type battery swapping platforms with lifting and positioning functions, as well as auxiliary trolleys for commercial vehicles or large battery packs.

[0003] Existing battery replacement methods typically employ lifting decoupling platforms or RGV shuttles. Due to the weight of the battery, the bolts are subjected to shearing forces, resulting in high disassembly resistance and potential damage to the threads. Before disassembling the battery pack, optical cameras are required to precisely position the bolts. After replacing the battery, the position of the decoupling platform or shuttle changes, necessitating repositioning and repeated adjustments. This adds to the process of secondary positioning of the bolt holes, introduces alignment errors, affects battery replacement efficiency, and increases workload. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a battery swapping auxiliary device for new energy vehicles to solve the problems mentioned in the background.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A battery swapping auxiliary device for a new energy vehicle includes a platform unit and a carrier module. The carrier unit is movably arranged in the platform unit and includes a carrier vehicle assembly, a transmission housing assembly, and a bolt head assembly. The carrier vehicle group includes a flatbed truck, a lifting platform, and a carrier sliding plate. The flatbed truck is movably arranged in the platform unit. The flatbed truck is equipped with a vertically lifting platform, and the lifting platform is equipped with a carrier sliding plate that slides laterally to support the battery. The transmission housing assembly includes a shaft, a cylindrical housing, a groove, a disc groove, and a chuck. A plurality of shafts are arranged in an array on one side of the lifting plate, and the shafts are rotatably mounted on one side of the lifting plate. The outer diameter end of the shaft is provided with a groove. The disc groove is provided at the bottom of the cylindrical housing. One end of the chuck is limited and slidably assembled on the groove, and the other end of the chuck is slidably disposed in the disc groove, so that the cylindrical housing has any degree of freedom relative to the shaft in the circumferential direction. The bolt head assembly includes a sleeve housing and a bolt head. The sleeve housing is fixedly assembled to the top of the cylindrical housing, and the bolt head is longitudinally slidably assembled inside the sleeve housing. The bolt head is used to remove the countersunk bolts on one side of the new energy vehicle battery.

[0006] As a further embodiment of the present invention, the platform unit includes a platform assembly, which includes a platform, a working channel, a limiting guide rail groove, a mounting groove, and a main spindle screw. The platform has a working channel in the middle, a limiting guide rail groove at the bottom of the working channel, and mounting grooves at both ends of the platform. The main spindle screw is rotatably installed in the working channel and is connected to the trolley drive.

[0007] As a further embodiment of the present invention, the platform unit further includes a jig assembly, which includes a jig, a wheel frame and an offset wheel. The jig is fixedly installed in the mounting groove, and the wheel frame is fixedly installed on the jig. Several offset wheels are rotatably assembled in the wheel frame. A guide rod is also fixedly installed on the tire frame. The drive motor is located on one side of the tire frame. One end of the side slide is limited and slidably mounted on the guide rod. The other end of the side slide is connected to the drive screw of the drive motor. A push plate is also fixedly mounted on the other end of the side slide. The push plate is located between the two sets of wheel frames.

[0008] As a further embodiment of the present invention, the carrier vehicle assembly further includes a first cross arm, a second cross arm, a limiting rod, a slide block, a limiting groove, a bottom axle, and bottom wheels. One end of the first cross arm is rotatably mounted on the flatbed, and one end of the second cross arm is rotatably mounted on the lifting plate. A limiting rod is also provided at the bottom of the lifting plate. One end of the slide block is rotatably connected to the first cross arm, and the other end of the slide block is slidably sleeved on the limiting rod. A limiting groove is also provided on the flatbed. One end of the bottom axle is rotatably mounted on the second cross arm, and the other end of the bottom axle is slidably positioned in the limiting groove. The bottom wheels and the bottom axle are coaxially fixedly connected, and the bottom wheels are rolled on the flatbed. The carrier vehicle group also includes a cross axle, a telescopic motor, and a motor base. The cross axle is rotatably inserted between two sets of first cross arms and second cross arms. The movable shaft at one end of the telescopic motor is rotatably connected to the cross axle. One end of the motor base is rotatably connected to the telescopic motor, and the other end of the motor base is rotatably connected to the bottom axle.

[0009] As a further embodiment of the present invention, the carrier vehicle group further includes a first platform, a second platform, and a guide rail. The first platform and the second platform are both fixedly assembled to one end of the flatbed vehicle, and the first platform and the second platform are spaced apart. Guide rails are fixedly provided on both the first platform and the second platform. The carrier vehicle assembly also includes a support base, with side corner plates at both ends. Several mounting holes are arranged in an array on the side corner plates. A main guide rail is also fixedly arranged on the support base. The main guide rail is matched with the guide rail. The carrier slide plate is limited and slidably assembled on the main guide rail.

[0010] As a further embodiment of the present invention, the transmission housing assembly further includes an elastic element, transmission wheels and a synchronous belt. The elastic element is sleeved on the outside of the shaft, and two sets of transmission wheels are coaxially fixedly assembled on the bottom side of the shaft. A synchronous belt is assembled between the transmission wheels of two adjacent sets of shafts.

[0011] As a further embodiment of the present invention, the transmission housing assembly further includes a side groove, a limiting groove, a sub-shaft, a thrust rod, and a pressing surface. The side grooves are evenly distributed on both sides of the cylindrical wall of the cylindrical housing, and a limiting groove is also provided at one end of the side groove. One end of the sub-shaft is fixedly connected to the shaft rod, and a thrust rod is passed through the sub-shaft. A pressing surface is fixedly provided at the other end of the sub-shaft.

[0012] As a further embodiment of the present invention, the bolt head assembly further includes a hollow shaft, a pressing cylinder, a pressing surface, and balls. The hollow shaft is fixedly arranged at the bottom of the sleeve housing. The pressing cylinder is slidably inserted on the hollow shaft and elastically connected to the sleeve housing. A pressing surface is provided at one end of the sleeve housing, and a plurality of balls are rolled and assembled in the pressing surface.

[0013] As a further embodiment of the present invention, the bolt head assembly further includes a ring frame, a sleeve, a guide rod, and a groove. The ring frame is fixedly assembled in the inner cavity of the housing, and a plurality of sleeves are fixedly arranged in the ring frame. The guide rod is elastically slidably assembled in the sleeve. A groove is also provided at the inner diameter end of the ring frame, and the bolt head is limited and slidably assembled on the groove.

[0014] In summary, the embodiments of the present invention have the following beneficial effects compared with the prior art: This invention achieves seamless integration of old battery recycling and new battery delivery through a carrier slide plate, eliminating the need to move the battery to a transfer station and reposition it in the traditional battery swapping process. The dual-station storage structure allows the new battery to be positioned during the disassembly of the old battery. After the lifting plate is raised, the bolts can be directly put back into the original holes without secondary alignment, thus shortening the battery swapping cycle of a single vehicle. Furthermore, to address the issues of uneven chassis height and bolt misalignment caused by suspension deformation in different vehicles, an elastic sliding mechanism is provided between the axle and the cylinder shell. When the sleeve shell contacts the battery pack, it can float axially to compensate and match the actual position of the bolts. It can adaptively align the countersunk bolt holes without manual intervention, saving the time of optical alignment and reducing equipment costs. Furthermore, the carrier slide plate provides flexible support to the bottom of the battery before disassembly, so that the weight of the battery is borne by the slide plate. The bolts only bear the thread friction force and are not subjected to the shear force caused by the deformation of the vehicle beam. At the same time, it avoids the lateral load on the bolt column caused by the torsion of the frame, reduces the unscrewing resistance, and prevents the bolts from getting stuck or stripped. Furthermore, considering the common use of countersunk bolt holes in vehicle underbody protection plates, the sleeve housing is equipped with an elastic guide rod assembly. When contacting the bolt hole area, only the guide rod located inside the hole remains extended, while the others are compressed back. By utilizing the constraint of the hole wall, the sleeve housing is gradually pulled to a completely concentric position, ensuring that the groove accurately engages with the countersunk bolt head. No visual or laser assistance is required, and the mechanical self-adaptive alignment makes it more reliable. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of one embodiment of the present invention.

[0016] Figure 2 This is a partial structural diagram of an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the structure of the carcass assembly in one embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram of the structure of the carrier vehicle group in one embodiment of the present invention.

[0019] Figure 5 This is a schematic diagram of the carrier vehicle assembly from another perspective in one embodiment of the present invention.

[0020] Figure 6 This is a schematic diagram of the transmission housing assembly and bolt head assembly in one embodiment of the present invention.

[0021] Figure 7 This is a schematic diagram of the transmission housing assembly in one embodiment of the present invention.

[0022] Figure 8 This is a schematic diagram of the side groove and the limiting groove in one embodiment of the present invention.

[0023] Figure 9 This is a schematic diagram of the bolt head assembly in one embodiment of the present invention.

[0024] Figure 10 This is a schematic diagram illustrating the rotation principle of the guide rod in one embodiment of the present invention.

[0025] Figure label: Carriage assembly, 101-Carriage, 102-Workflow channel, 103-Limit guide rail groove, 104-Mounting groove, 105-Spindle lead screw; 201-Tire frame assembly, 202-Wheel frame, 203-Offset wheel, 204-Guide rod, 205-Drive motor, 206-Side slide, 207-Push plate; Carrier vehicle assembly, 301-Platecart, 302-Guide rail wheel, 303-Lifting plate, 304-First cross arm, 305-Second cross arm, 306-Limiting rod, 307-Slide seat, 308-Limiting groove, 309-Bottom shaft, 310-Bottom wheel, 311-Cross shaft, 312-Telescopic motor, 313-Motor base, 314-First platform, 315-Second platform, 316-Guide rail, 317-Support seat, 318-Side corner plate, 319-Mounting hole, 320-Main guide rail, 321-Carrier sliding plate; Transmission housing assembly, 401-shaft, 402-groove, 403-elastic element, 404-transmission wheel, 405-synchronous belt, 406-cylinder housing, 407-disc groove, 408-chuck, 409-side groove, 410-limiting stop groove, 411-sub-shaft, 412-thrust rod, 413-pressing surface; Bolt head assembly, 501-housing shell, 502-hollow shaft, 503-pressed cylinder, 504-pressed surface, 505-ball bearing, 506-ring frame, 507-sleeve, 508-guide rod, 509-groove, 510-bolt head. Detailed Implementation

[0026] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Please see Figures 1-10 According to one embodiment of the present invention, a battery replacement auxiliary device for a new energy vehicle includes a platform unit and a carrier module. The carrier unit is movably arranged in the platform unit. The carrier unit includes a carrier vehicle assembly 3, a transmission housing assembly 4, and a bolt head assembly 5. The carrier vehicle assembly 3 includes a flatbed trolley 301, a lifting plate 303, and a carrier sliding plate 321. The flatbed trolley 301 is movably arranged in the platform unit. The vertically lifting lifting plate 303 is mounted on the flatbed trolley 301, and the carrier sliding plate 321, which slides laterally and is used to support the battery, is mounted on the lifting plate 303. The transmission housing assembly 4 includes a shaft 401, a groove 402, a cylindrical shell 406, a disc groove 407, and a chuck 408. A plurality of the shafts 401 are arranged in an array. On one side of the lifting plate 303, and with the shaft 401 rotatably mounted on the same side, the outer diameter end of the shaft 401 is provided with a groove 402. The disc groove 407 is arranged at the bottom of the cylindrical shell 406. One end of the chuck 408 is limited and slidably assembled on the groove 402, and the other end of the chuck 408 is slidably disposed in the disc groove 407, so that the cylindrical shell 406 has any degree of freedom relative to the shaft 401 in the circumferential direction. The bolt head assembly 5 includes a sleeve shell 501 and a bolt head 510. The sleeve shell 501 is fixedly assembled on the top of the cylindrical shell 406, and the bolt head 510 is slidably assembled longitudinally inside the sleeve shell 501. The bolt head 510 is used to remove the countersunk bolts on the side of the new energy vehicle battery.

[0028] In practical application, when replacing the battery of a new energy vehicle using this device, the platform unit includes a platform assembly 1 and a rack assembly 2. The platform assembly 1 is used to park the vehicle to be operated, and the rack assembly 2 is used to move the vehicle laterally to achieve fine-tuning of the vehicle's lateral position, thereby facilitating the carrier unit to disassemble and install the battery. The carrier unit is used to support the disassembled old battery at the bottom of the vehicle and replace it with a new battery. The pallet 301 is movable inside the platform unit, and the lifting plate 303 above it has the function of lifting and lowering in the vertical direction. The carrier sliding plate 3... 21. During the disassembly of the old battery, auxiliary support can be provided, so that several bolts only bear the force from the threaded holes, and no longer bear the shear force generated by the weight of the battery itself, thereby reducing the resistance of the bolts during unscrewing. Several shafts 401 are rotatably arranged on one side of the lifting plate 303, and several shafts 401 are interconnected by a linkage structure. The cylindrical shell 406 has the function of vertically lifting and lowering along the shafts 401. When the lifting plate 303 approaches the battery pack on the side of the vehicle chassis, the carrier slide plate 321 first flexibly supports the bottom of the battery pack, and then several of the cylindrical shells... The body 406 abuts against one side of the battery pack via a sleeve 501 provided on one side, and the sleeve 501 is close to several countersunk bolt holes on the battery pack. As the lifting plate 303 continues to rise, the sleeve 406 elastically slides outside the shaft 401 and rotates simultaneously, allowing the sleeve 501 to move eccentrically relative to the shaft 401 during rotation. The purpose is to move the sleeve 501 to a position concentric with the countersunk bolt holes. After the lifting plate 303 reaches its limit position, the protrusion 509 is pushed out towards the countersunk bolt hole side, so that the protrusion 509 is locked into the bolt after rotation. The head is rotated, and the bolts are removed by rotating the housing 501. After the bolts are removed, the lifting plate 303 moves as a whole, and the carrier slide plate 321 supporting the old battery is slid into the recycling track set on one side. The carrier slide plate 321 carrying the new battery is pushed onto the lifting plate 303, and then the lifting plate 303 is driven to be raised to the bottom of the vehicle. This allows several disassembled bolts to be directly assembled into the corresponding bolt holes without secondary positioning or the cumbersome operation of repeatedly moving the battery through the carrier. At the same time, it avoids the errors introduced by secondary positioning, thereby further improving the overall efficiency of battery replacement.

[0029] Please see Figure 2In a preferred embodiment of the present invention, the platform unit includes a platform assembly 1, which includes a platform 101, a working channel 102, a limiting guide rail groove 103, a mounting groove 104, and a main spindle screw 105. The platform 101 has a working channel 102 in the middle, a limiting guide rail groove 103 at the bottom of the working channel 102, and mounting grooves 104 at both ends of the platform 101. The main spindle screw 105 is rotatably mounted in the working channel 102 and is connected to the trolley 301 for transmission.

[0030] In practical application, the platform 101 has a working channel 102 in the middle, and a limiting guide groove 103 is provided at the bottom of the working channel 102. The platform 101 also has mounting grooves 104 at both ends. The main spindle screw 105 is rotatably installed inside the working channel 102 and forms a transmission connection with the trolley 301. During rotation, the main spindle screw 105 can drive the trolley 301 to move freely along the axis of the main spindle screw 105 through meshing, thereby controlling the movement position of the trolley 301.

[0031] Please see Figure 3 In a preferred embodiment of the present invention, the platform unit further includes a jig assembly 2, which includes a jig 201, a wheel frame 202, and offset wheels 203. The jig 201 is fixedly installed in the mounting groove 104, and the wheel frame 202 is fixedly installed on the jig 201. Several offset wheels 203 are rotatably assembled in the wheel frame 202. A guide rod 204 is also fixedly installed on the jig 201. A drive motor 205 is arranged on one side of the jig 201. One end of a side slide 206 is limited and slidably assembled on the guide rod 204, and the other end of the side slide 206 is connected to the drive screw of the drive motor 205. A push plate 207 is also fixedly installed on the other end of the side slide 206, and the push plate 207 is arranged between the two sets of wheel frames 202.

[0032] In practical application, the tire frame 201 is fixedly installed in the mounting groove 104, and the wheel frame 202 is fixedly installed on the tire frame 201. Several offset wheels 203 are rotatably assembled inside the wheel frame 202. One end of the side slide 206 is limited and slidably assembled on the guide rod 204, and the other end of the side slide 206 is connected to the drive screw of the drive motor 205. The other end of the side slide 206 is also fixedly assembled with a push plate 207, so that the push plate 207 can move along the layout direction of the guide rod 204. When the vehicle tire presses on the offset wheel 203, the vehicle's parking position can be adjusted by pushing the tire laterally so that it can be moved on the offset wheel 203, thereby facilitating alignment with the carrier module.

[0033] Please see Figure 5In a preferred embodiment of this invention, the carrier vehicle group 3 further includes a first cross arm 304, a second cross arm 305, a limiting rod 306, a slide 307, a limiting groove 308, a bottom axle 309, and bottom wheels 310. One end of the first cross arm 304 is rotatably mounted on the flatbed 301, and one end of the second cross arm 305 is rotatably mounted on the lifting plate 303. The bottom of the lifting plate 303 is also provided with a limiting rod 306. One end of the slide 307 is rotatably connected to the first cross arm 304, and the other end of the slide 307 is slidably sleeved on the limiting rod 306. The flatbed 301 is also provided with a limiting groove 308. The bottom axle 309... One end of the bottom shaft 309 is rotatably mounted on the second cross arm 305, and the other end of the bottom shaft 309 is slidably positioned in the limiting groove 308. The bottom wheel 310 and the bottom shaft 309 are coaxially fixedly connected, and the bottom wheel 310 is rotatably positioned on the flatbed 301. The carrier vehicle group 3 also includes a cross shaft 311, a telescopic motor 312, and a motor base 313. The cross shaft 311 is rotatably inserted between the two sets of first cross arms 304 and second cross arms 305. The movable shaft at one end of the telescopic motor 312 is rotatably connected to the cross shaft 311. One end of the motor base 313 is rotatably connected to the telescopic motor 312, and the other end of the motor base 313 is rotatably connected to the bottom shaft 309.

[0034] In practical application, one end of the first cross arm 304 is rotatably mounted on the trolley 301, and one end of the second cross arm 305 is rotatably mounted on the lifting plate 303. A limit rod 306 is also provided at the bottom of the lifting plate 303. One end of the slide block 307 is rotatably connected to the first cross arm 304, and the other end of the slide block 307 is slidably sleeved on the limit rod 306. One end of the bottom shaft 309 is rotatably mounted on the second cross arm 305, and the other end of the bottom shaft 309 is slidably positioned in the limit groove 308. The cross shaft 311 is rotatably inserted into the two sets of first cross arms 304. Between the cross arm 304 and the second cross arm 305, the movable shaft at one end of the telescopic motor 312 is rotatably connected to the cross shaft 311, and one end of the motor base 313 is rotatably connected to the telescopic motor 312. The other end of the motor base 313 is rotatably connected to the bottom shaft 309. This allows the telescopic motor 312, in the driving state, to change the distance between the cross shaft 311 and the bottom shaft 309 when it extends or retracts one end of the movable shaft, thereby adjusting the rotation angle between the first cross arm 304 and the second cross arm 305, and thus realizing the adjustment of the height of the lifting plate 303 in the vertical direction.

[0035] Please see Figure 5In a preferred embodiment of the present invention, the carrier vehicle assembly 3 further includes a first platform 314, a second platform 315, and a guide rail 316. The first platform 314 and the second platform 315 are both fixedly mounted on one end of the flatbed trolley 301, and the first platform 314 and the second platform 315 are spaced apart. The guide rail 316 is fixedly mounted on both the first platform 314 and the second platform 315. The carrier vehicle assembly 3 further includes a support base 317. Both ends of the support base 317 are provided with side corner plates 318. A plurality of mounting holes 319 are arranged in an array on the side corner plates 318. A main guide rail 320 is also fixedly mounted on the support base 317. The main guide rail 320 is matched with the guide rail 316. The carrier slide plate 321 is limited and slidably mounted on the main guide rail 320.

[0036] In practical application, the first platform 314 and the second platform 315 are both fixedly assembled to one end of the trolley 301. Guide rails 316 are fixedly provided on the first platform 314 and the second platform 315. A set of carrier slide plates 321 are movably arranged on the first platform 314 or the second platform 315. The carrier slide plates 321 are used to load new batteries. Side corner plates 318 are provided at both ends of the support base 317. Several mounting holes 319 are arranged in an array on the side corner plates 318. The transmission housing assembly 4 and the bolt head assembly 5 are both arranged in the mounting holes 319.

[0037] Please see Figure 7 In a preferred embodiment of the present invention, the transmission housing assembly 4 further includes an elastic element 403, a transmission wheel 404, and a synchronous belt 405. The elastic element 403 is sleeved on the outside of the shaft 401. Two sets of transmission wheels 404 are coaxially fixedly assembled on the bottom side of the shaft 401. A synchronous belt 405 is assembled between the transmission wheels 404 of two adjacent sets of shafts 401.

[0038] In practical application, the outer diameter end of the shaft 401 is provided with a groove 402, the elastic element 403 is sleeved on the outside of the shaft 401, and two sets of transmission wheels 404 are coaxially fixedly mounted on the bottom side of the shaft 401. Adjacent sets of shafts 401 are connected by the transmission wheels 404 and the synchronous belt 405, and several shafts 401 are driven by the same drive source. The purpose is to enable several shafts 401 to rotate synchronously. If multiple independent motors are used for separate driving... Because each motor has differences in load, rotor inertia and electrical response delay, a certain corner of the battery pack may be released first, causing it to tilt. This would put all the weight on the bolts that have not yet loosened, causing the bolts to be momentarily overloaded or even jammed. The groove 407 is located at the bottom of the cylindrical shell 406, and the chuck 408 is slidably arranged in the groove 407 in the horizontal direction, so that the cylindrical shell 406 can be displaced in the horizontal plane relative to the shaft 401 and the chuck 408, thereby further adjusting the position of the cylindrical shell 406.

[0039] Please see Figure 7 In a preferred embodiment of the present invention, the transmission housing assembly 4 further includes a side groove 409, a limiting groove 410, a sub-shaft 411, a thrust rod 412, and a pressing surface 413. The side grooves 409 are evenly distributed on both sides of the cylindrical wall of the cylindrical housing 406. A limiting groove 410 is also provided at one end of the side groove 409. One end of the sub-shaft 411 is fixedly connected to the shaft 401. A thrust rod 412 passes through the sub-shaft 411. A pressing surface 413 is fixedly provided at the other end of the sub-shaft 411.

[0040] In practical application, the cylindrical shell 406 has a side groove 409 on its side and a limit groove 410 at one end. When the sleeve shell 501 abuts against the bottom of the battery pack, both the sleeve shell 501 and the cylindrical shell 406 slide towards the lifting plate 303, causing the elastic element 403 to elastically support the chuck 408. At the same time, the thrust rod 412 rotates counterclockwise, causing the sleeve shell 501 and the cylindrical shell 406 to rotate synchronously in a counterclockwise direction. During the process, the thrust rod 412 shifts towards the axial side of the countersunk bolt hole. At this time, the thrust rod 412 continuously moves closer to the side of the sleeve housing 501. When the protrusion 509 on one side of the sleeve housing 501 is engaged with the bolt head, the shaft 401 rotates clockwise. During the rotation, the thrust rod 412 abuts against the groove surface of the limiting groove 410 in the opposite direction and pushes the sleeve housing 501 to rotate in the opposite direction. At this time, the sliding of the thrust rod 412 in the vertical direction is limited by the limiting groove 410, so that the thrust rod 412 and the sleeve housing 406 are locked.

[0041] Please see Figure 9In a preferred embodiment of the present invention, the bolt head assembly 5 further includes a hollow shaft 502, a pressing cylinder 503, a pressing surface 504, and ball bearings 505. The hollow shaft 502 is fixedly arranged at the bottom of the sleeve housing 501. The pressing cylinder 503 is slidably inserted on the hollow shaft 502 and elastically connected to the sleeve housing 501. One end of the sleeve housing 501 is provided with a pressing surface 504, and a plurality of ball bearings 505 are rolled and assembled in the pressing surface 504.

[0042] In practical application, the hollow shaft 502 is fixedly arranged at the bottom of the sleeve housing 501, and the pressing cylinder 503 is slidably inserted on the hollow shaft 502 and forms an elastic connection with the sleeve housing 501. One end of the sleeve housing 501 is provided with a pressing surface 504, and a plurality of the ball bearings 505 are rolled and assembled in the pressing surface 504. When the sleeve housing 501 abuts against the bottom of the battery pack, the ball bearings 505 can move the sleeve housing 501 on one side of the battery pack, thereby reducing friction. After being attached to the bottom of the battery pack, the pressing surface 413 contacts the pressing cylinder 503 and supports the pressing cylinder 503. On the one hand, the protrusion 509, which is fixedly connected to the pressing cylinder 503, is vertically lifted. On the other hand, the elastic pressure generated on one side of the pressing cylinder 503 creates an elastic compression state between the pressing cylinder 503 and the pressing surface 413, thereby preventing the pressing cylinder 503 from moving. This ensures that the axial position of the housing 501 remains unchanged after the bolts are removed, facilitating the subsequent coaxial installation of the bolts.

[0043] Please see Figure 9 and Figure 10 In a preferred embodiment of the present invention, the bolt head assembly 5 further includes a ring frame 506, a sleeve 507, a guide rod 508, and a groove 509. The ring frame 506 is fixedly assembled in the inner cavity of the sleeve housing 501, and a plurality of sleeves 507 are fixedly arranged in the ring frame 506. The guide rod 508 is elastically slidably assembled in the sleeve 507. The inner diameter end of the ring frame 506 is also provided with a groove 509, and the bolt head 510 is limited and slidably assembled on the groove 509. The sleeve 507 and the guide rod 508 are inclinedly arranged in the sleeve housing 501.

[0044] In practical application, the ring frame 506 is equipped with several sleeves 507, and the guide rods 508 are elastically and slidably assembled in the sleeves 507. The inner diameter end of the ring frame 506 is also provided with a groove 509, and the bolt head 510 is limited and slidably assembled on the groove 509. When the housing 501 abuts against the bottom of the battery pack, the several guide rods 508 preferentially contact the battery pack. At this time, the guide rods 508 located in the countersunk bolt holes remain extended. When the guide rod 508 is out of the countersunk bolt hole, it elastically retracts into the sleeve 507. When the guide rod 508 located in the countersunk bolt hole rotates, it abuts against the inner wall of the countersunk bolt hole and can pull the sleeve housing 501 as a whole toward the axis of the bolt hole until the next set of guide rods 508 slides into the bolt hole, so that all the guide rods 508 eventually slide into the bolt hole, thereby achieving concentric positioning between the sleeve housing 501 and the bolt hole.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A battery swapping auxiliary device for new energy vehicles, characterized in that, include: The platform unit and the carrier module are movably arranged in the platform unit. The carrier unit includes a carrier vehicle assembly, a transmission housing assembly, and a bolt head assembly. The carrier vehicle group includes a flatbed truck, a lifting platform, and a carrier sliding plate. The flatbed truck is movably arranged in the platform unit. The flatbed truck is equipped with a vertically lifting platform, and the lifting platform is equipped with a carrier sliding plate that slides laterally to support the battery. The transmission housing assembly includes a shaft, a cylindrical housing, a groove, a disc groove, and a chuck. A plurality of shafts are arranged in an array on one side of the lifting plate, and the shafts are rotatably mounted on one side of the lifting plate. The outer diameter end of the shaft is provided with a groove. The disc groove is provided at the bottom of the cylindrical housing. One end of the chuck is limited and slidably assembled on the groove, and the other end of the chuck is slidably disposed in the disc groove, so that the cylindrical housing has any degree of freedom relative to the shaft in the circumferential direction. The bolt head assembly includes a sleeve housing and a bolt head. The sleeve housing is fixedly assembled to the top of the cylindrical housing, and the bolt head is longitudinally slidably assembled inside the sleeve housing. The bolt head is used to remove the countersunk bolts on one side of the new energy vehicle battery.

2. The battery swapping auxiliary device for a new energy vehicle according to claim 1, characterized in that, The platform unit includes a platform assembly, which includes a platform, a working channel, a limiting guide rail groove, a mounting groove, and a main spindle screw. The working channel is provided in the middle of the platform, and the bottom of the working channel is provided with a limiting guide rail groove. The two ends of the platform are also provided with mounting grooves. The main spindle screw is rotatably installed in the working channel and is connected to the trolley drive.

3. The battery replacement auxiliary device for a new energy vehicle according to claim 2, characterized in that, The platform unit also includes a jig assembly, which includes a jig, a wheel frame, and offset wheels. The jig is fixedly installed in the mounting groove, and the wheel frame is fixedly installed on the jig. Several offset wheels are rotatably assembled in the wheel frame. A guide rod is also fixedly installed on the tire frame. The drive motor is located on one side of the tire frame. One end of the side slide is limited and slidably mounted on the guide rod. The other end of the side slide is connected to the drive screw of the drive motor. A push plate is also fixedly mounted on the other end of the side slide. The push plate is located between the two sets of wheel frames.

4. The battery swapping auxiliary device for a new energy vehicle according to claim 1, characterized in that, The carrier vehicle assembly further includes a first cross arm, a second cross arm, a limiting rod, a slide, a limiting groove, a bottom axle, and bottom wheels. One end of the first cross arm is rotatably mounted on the flatbed, and one end of the second cross arm is rotatably mounted on the lifting plate. The bottom of the lifting plate is also provided with a limiting rod. One end of the slide is rotatably connected to the first cross arm, and the other end of the slide is slidably sleeved on the limiting rod. The flatbed is also provided with a limiting groove. One end of the bottom axle is rotatably mounted on the second cross arm, and the other end of the bottom axle is slidably positioned in the limiting groove. The bottom wheels and the bottom axle are coaxially fixedly connected, and the bottom wheels are rolled on the flatbed. The carrier vehicle group also includes a cross axle, a telescopic motor, and a motor base. The cross axle is rotatably inserted between two sets of first cross arms and second cross arms. The movable shaft at one end of the telescopic motor is rotatably connected to the cross axle. One end of the motor base is rotatably connected to the telescopic motor, and the other end of the motor base is rotatably connected to the bottom axle.

5. The battery swapping auxiliary device for a new energy vehicle according to claim 1, characterized in that, The carrier vehicle group also includes a first platform, a second platform and a guide rail. The first platform and the second platform are both fixedly assembled to one end of the flatbed vehicle, and the first platform and the second platform are spaced apart. Guide rails are fixedly installed on both the first platform and the second platform. The carrier vehicle assembly also includes a support base, with side corner plates at both ends. Several mounting holes are arranged in an array on the side corner plates. A main guide rail is also fixedly arranged on the support base. The main guide rail is matched with the guide rail. The carrier slide plate is limited and slidably assembled on the main guide rail.

6. The battery swapping auxiliary device for a new energy vehicle according to claim 1, characterized in that, The transmission housing assembly also includes an elastic element, transmission wheels, and a synchronous belt. The elastic element is sleeved on the outside of the shaft, and two sets of transmission wheels are coaxially fixedly assembled on the bottom side of the shaft. A synchronous belt is assembled between the transmission wheels of two adjacent sets of shafts.

7. The battery swapping auxiliary device for a new energy vehicle according to claim 1, characterized in that, The transmission housing assembly also includes side grooves, limiting grooves, sub-shafts, thrust rods, and pressing surfaces. Side grooves are evenly distributed on both sides of the cylindrical wall of the cylindrical housing. A limiting groove is also provided at one end of the side groove. One end of the sub-shaft is fixedly connected to the shaft rod. A thrust rod is passed through the sub-shaft. A pressing surface is fixedly provided at the other end of the sub-shaft.

8. The battery swapping auxiliary device for a new energy vehicle according to claim 1, characterized in that, The bolt head assembly also includes a hollow shaft, a pressing cylinder, a pressing surface, and balls. The hollow shaft is fixedly arranged at the bottom of the sleeve housing. The pressing cylinder is slidably inserted on the hollow shaft and elastically connected to the sleeve housing. One end of the sleeve housing is provided with a pressing surface, and several balls are rolled and assembled in the pressing surface.

9. A battery swapping auxiliary device for a new energy vehicle according to claim 1, characterized in that, The bolt head assembly also includes a ring frame, a sleeve, a guide rod, and a groove. The ring frame is fixedly assembled in the inner cavity of the housing, and several sleeves are fixedly arranged in the ring frame. The guide rod is elastically slidably assembled in the sleeve. The inner diameter end of the ring frame is also provided with a groove, and the bolt head is limited and slidably assembled on the groove.

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