Battery pack hoisting device and transportation system
By combining a gear and rack meshing transmission structure with a drive motor in the battery pack lifting device, the high cost problem caused by the large number of parts in the existing technology is solved, realizing a high-precision and safe battery pack lifting process, and reducing production and use costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU JI NENG TIMES TECHNOLOGY CO LTD
- Filing Date
- 2025-08-06
- Publication Date
- 2026-06-12
Smart Images
Figure CN224350273U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery pack transportation technology, and more specifically, to a battery pack lifting device and transportation system. Background Technology
[0002] With the development of electric vehicles, the electrification trend of heavy-duty trucks is becoming increasingly apparent. The heavy-duty truck battery swapping model, which involves separating the vehicle body from the battery and allowing for rapid battery replacement, provides an effective way to address range anxiety and overcome the challenges of promoting electric heavy-duty trucks.
[0003] Currently, the battery pack lifting device of heavy truck battery swapping stations uses a sprocket and chain drive to complete three-stage lifting actions during the lifting process. However, the cooperation between the sprocket and the chain requires precise installation and positioning, and the connection between each lifting component and the chain also requires the installation of transmission components. This increases the number of structural parts and thus increases the production cost of the device. Utility Model Content
[0004] The problem this invention addresses is how to reduce the production cost of the device.
[0005] To address the aforementioned problems, this utility model provides a battery pack lifting device and a transportation system.
[0006] In a first aspect, this utility model provides a battery pack lifting device, comprising: a first movable frame, movable along a first direction and connected to a crossbeam; a second movable frame, movable along a second direction and connected to the first movable frame; a lifting frame, movable along a third direction and connected to the second movable frame; and a first drive motor, the fixed end of the first drive motor being disposed on the second movable frame, and the drive end of the first drive motor being drivenly connected to the lifting frame to drive the lifting frame to move.
[0007] The transmission structure includes a gear and a rack. The gear is driven to the drive shaft of the first drive motor, which drives the gear to rotate. The rack is disposed on the outer peripheral wall of the lifting frame, and the extension direction of the rack is the same as the third direction. The gear meshes with the rack. The first direction, the second direction, and the third direction are perpendicular to each other.
[0008] The beneficial effects of this utility model battery pack lifting device are:
[0009] In this embodiment, by setting the above-described structure, the transmission structure is combined with the first drive motor. High-precision displacement control is achieved through meshing transmission. Since each rotation of the gear corresponds to a fixed movement distance of the rack, the movement distance of the lifting frame in the third direction can be precisely controlled in conjunction with the control of the first drive motor. This meets the high-precision requirements for lifting battery packs and reduces docking deviations caused by positioning errors. Furthermore, the meshing of the gear and rack eliminates the risk of slippage, ensuring stable power transmission from the first drive motor to the lifting frame. Even when lifting heavy battery packs, transmission stability is maintained, ensuring safety during the lifting process. This drives the lifting frame to move in the third direction, i.e., to perform lifting motion. The meshing transmission also ensures efficient and stable power transmission, contributing to the stability of the device during operation. Simultaneously, the movement of the first moving frame along the first direction and the second moving frame along the second direction achieves three-dimensional spatial coverage. This design reduces the number of stages in the lifting drive, thereby reducing the number of components, lowering material procurement costs, and ultimately reducing the overall operating cost of the device.
[0010] Optionally, the battery pack lifting device further includes a guide structure disposed between the second movable frame and the lifting frame, the guide structure being used to guide the movement of the lifting frame.
[0011] Optionally, the guiding structure includes a guide rail and a guide block. The guide rail is disposed on one of the second movable frame and the lifting frame, and the guide block is disposed on the other of the second movable frame and the lifting frame. The extending direction of the guide rail is the same as the moving direction of the lifting frame, and the guide block is movably disposed on the guide rail to guide the movement of the lifting frame.
[0012] Optionally, the second movable frame is a first frame structure having a hollow first chamber, and the lifting frame is a second frame structure, which is movable and disposed within the first chamber along the third direction.
[0013] Optionally, the battery pack lifting device further includes: a drive wheel, located at one end of the first movable frame in the first direction; a driven wheel, located at the other end of the first movable frame in the first direction; a timing belt, wound around the drive wheel and the driven wheel, with both ends of the timing belt respectively fixed to both ends of the crossbeam; and a second drive member, drivenly connected to the drive wheel, which drives the drive wheel to rotate so as to drive the driven wheel to rotate synchronously through the timing belt, thereby moving the first movable frame along the first direction.
[0014] Optionally, the battery pack lifting device further includes: a first guide wheel, which is mounted on the first movable frame on the same side as the drive wheel; a second guide wheel, which is mounted on the first movable frame on the same side as the driven wheel; and the timing belt is sequentially attached to the drive wheel, the first guide wheel, the driven wheel, and the second guide wheel.
[0015] Optionally, the lifting frame is provided with a clamping assembly at one end away from the first movable frame, the clamping assembly being used to clamp and fix the battery pack.
[0016] Optionally, the clamping assembly has a connecting end and a clamping end. The connecting end of the clamping assembly is rotatably connected to the lifting frame. The rotation axis of the connecting end is parallel to the third direction. The clamping end is used to clamp the battery pack.
[0017] Optionally, the battery pack lifting device further includes an electrical box, which is mounted on the first movable frame.
[0018] Secondly, this utility model provides a transportation system, including the aforementioned battery pack lifting device.
[0019] The advantages of the transportation system in this embodiment over the prior art are the same as those of the battery pack lifting device described above, and will not be repeated here. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of the battery pack lifting device provided in an embodiment of the present utility model;
[0021] Figure 2 for Figure 1 Enlarged view of section AA;
[0022] Figure 3 Another structural schematic diagram of the battery pack lifting device provided in an embodiment of this utility model;
[0023] Figure 4 This is a structural schematic diagram from another perspective of the battery pack lifting device provided in an embodiment of the present utility model.
[0024] Explanation of reference numerals in the attached figures:
[0025] First mobile frame 10
[0026] Second mobile unit 20
[0027] Lifting frame 30
[0028] First drive motor 40
[0029] Transmission structure 50, gear 51, rack 52,
[0030] Guide rail 60, guide block 61
[0031] Drive wheel 71, driven wheel 72, second drive component 73, first guide wheel 74, second guide wheel 75,
[0032] Clamping component 81
[0033] Electrical box 91, first direction X, second direction Y, third direction Z. Detailed Implementation
[0034] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Although some embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this utility model. It should be understood that the drawings and embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.
[0035] In the attached diagram, the X-axis represents the horizontal direction and is designated as the front-to-back position; the positive direction of the X-axis represents the front, and the negative direction represents the back. The Y-axis represents the left-to-right position; the positive direction of the Y-axis represents the left side, and the negative direction represents the right side. The Z-axis represents the vertical direction, i.e., the up-down position; the positive direction of the Z-axis represents the top, and the negative direction represents the bottom. It should be noted that the aforementioned representations of the X, Y, and Z axes are merely for ease of description and simplification of the present invention, and do not indicate or imply that the device or component 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 the present invention.
[0036] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.
[0037] It should be noted that the terms "one" and "multiple" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".
[0038] like Figures 1 to 4 As shown, in a first aspect, the battery pack lifting device provided by this utility model includes: a first movable frame 10, movable along a first direction and connected to a crossbeam; a second movable frame 20, movable along a second direction and connected to the first movable frame 10; a lifting frame 30, movable along a third direction and connected to the second movable frame 20; a first drive motor 40, the fixed end of the first drive motor 40 being disposed on the second movable frame 20, and the drive end of the first drive motor 40 being drivenly connected to the lifting frame 30 to drive the lifting frame 30 to move; a transmission structure 50 having a gear 51 and a rack 52, the gear 51 being drivenly connected to the drive shaft of the first drive motor 40, the first drive motor 40 being used to drive the gear 51 to rotate, the rack 52 being disposed on the outer peripheral wall of the lifting frame 30, the extension direction of the rack 52 being the same as the third direction, the gear 51 meshing with the rack 52, and the first drive motor 40 driving the gear 51 to rotate to drive the gear 51 and the lifting frame 30 to move synchronously; wherein, the first direction, the second direction, and the third direction are mutually perpendicular to each other.
[0039] In this embodiment, by setting the above structure, the transmission structure 50 is combined with the first drive motor 40. High-precision displacement control can be achieved by using meshing transmission. Since each rotation of the gear 51 corresponds to a fixed moving distance of the rack 52, the movement distance of the lifting frame 30 in the third direction can be accurately controlled in conjunction with the control of the first drive motor 40, so as to meet the high precision requirements when lifting the battery pack and reduce the docking deviation caused by positioning deviation. Furthermore, the meshing of the aforementioned gear 51 and rack 52 eliminates the risk of slippage, ensuring stable power transmission from the first drive motor 40 to the lifting frame 30. Even when lifting heavy battery packs, transmission stability is maintained to guarantee safety during the lifting process. This allows the lifting frame 30 to move along a third direction, enabling it to perform lifting motions. The meshing transmission also ensures efficient and stable power transmission, contributing to the stability of the device during operation. Simultaneously, in conjunction with the movement of the first moving frame 10 along the first direction and the second moving frame 20 along the second direction, three-dimensional spatial coverage is achieved. This design reduces the number of stages in the lifting drive, thereby reducing the number of parts, lowering material procurement costs, and ultimately reducing the overall operating cost of the device.
[0040] In this embodiment, the first drive motor 40 can be a stepper motor. Because stepper motors have excellent positioning accuracy, they can precisely control the lifting height when driving the lifting frame 30 to move along a third direction, meeting the positional accuracy requirements during battery pack lifting.
[0041] In this embodiment, the number of first drive motors 40 can be two.
[0042] Optionally, the battery pack lifting device also includes a guide structure, which is located between the second movable frame 20 and the lifting frame 30, and is used to guide the movement of the lifting frame 30.
[0043] By setting up the above structure, the movement stability of the lifting frame 30 can be guaranteed, thereby improving the safety of the device during use.
[0044] Optionally, the guide structure includes a guide rail 60 and a guide block 61. The guide rail 60 is disposed on one of the second movable frame 20 and the lifting frame 30, and the guide block 61 is disposed on the other of the second movable frame 20 and the lifting frame 30. The extension direction of the guide rail 60 is the same as the movement direction of the lifting frame 30. The guide block 61 is movably disposed on the guide rail 60 to guide the movement of the lifting frame 30.
[0045] By setting the above structure, the guide rail 60 and the guide block 61 are respectively located on the second movable frame 20 and the lifting frame 30, and the extension direction of the guide rail 60 is consistent with the movement direction of the lifting frame 30. This ensures the straightness of the movement of the lifting frame 30. When the lifting frame 30 moves in a third direction, the sliding of the guide block 61 on the guide rail 60 can effectively limit the offset of the lifting frame 30, preventing it from swaying left and right or rotating during movement, thereby ensuring the accuracy of the lifting path. This ensures that the battery pack can reach the target position smoothly and reduces collisions or docking deviations caused by offset.
[0046] Optionally, the second movable frame 20 is a first frame structure with a hollow first chamber, and the lifting frame 30 is a second frame structure that is movable and disposed in the first chamber along a third direction.
[0047] By designing the above structure, the deformation of the frame structure under stress is small, thus ensuring the structural stability of the device during long-term use. This effectively prevents local displacement or tilting of the lifting frame 30, ensuring that the lifting frame 30 moves smoothly along the preset trajectory and greatly improving the accuracy of movement.
[0048] Optionally, the battery pack lifting device further includes: a drive wheel 71, located at one end of the first movable frame 10 in the first direction; a driven wheel 72, located at the other end of the first movable frame 10 in the first direction; a synchronous belt, wound around the drive wheel 71 and the driven wheel 72, with both ends of the synchronous belt fixed to both ends of the crossbeam; and a second drive member 73, drivenly connected to the drive wheel 71, which drives the drive wheel 71 to rotate so as to drive the driven wheel 72 to rotate synchronously through the synchronous belt, thereby moving the first movable frame 10 along the first direction.
[0049] In this embodiment, the two ends of the synchronous belt are fixed to the two ends of the crossbeam. The synchronous belt has multiple teeth, and the drive wheel 71 and driven wheel 72 have tooth grooves that match the tooth profile. The teeth of the synchronous belt mesh tightly with the tooth grooves of the drive wheel 71 and driven wheel 72, transmitting torque through the interlocking of the teeth, thus driving the driven wheel 72 to rotate synchronously. Because the drive wheel 71 and driven wheel 72 mesh with the synchronous belt, when the drive wheel 71 and driven wheel 72 rotate, they will move relative to the synchronous belt along the extension direction of the synchronous belt. Since the two ends of the synchronous belt are fixed to the two ends of the crossbeam, when the drive wheel 71 and driven wheel 72 move relative to the synchronous belt along the extension direction of the synchronous belt, it is equivalent to moving along the extension direction of the crossbeam. To enable the entire traveling frame to move along the first direction on the crossbeam, the synchronous belt is generally a flexible belt. The flexible belt connection avoids the impact of direct meshing of rigid gears 51. Simultaneously, it is less prone to slippage during transmission, ensures accurate transmission ratios, improves installation efficiency, shortens assembly time, and reduces costs. Compared to gear 51 and rack 52 transmissions, synchronous belts generally do not require additional lubrication, reducing maintenance costs and ensuring cleanliness within the battery swapping station. Furthermore, compared to gear 51 and rack 52 transmissions, the flexible belt body of the synchronous belt has flexible buffering characteristics, resulting in less noise during operation and helping to reduce noise pollution. Additionally, the synchronous belt has a faster speed response, shortening battery swapping time and improving battery swapping efficiency.
[0050] Specifically, the position of the second driving component 73 can be set according to the actual situation. For example, the second driving component 73 can be set on the first moving frame 10. This is just an example and is not a specific limitation.
[0051] Specifically, synchronous belts are typically made of materials such as rubber and polyurethane, and may have embedded tensile elements such as steel wire rope and fiberglass to ensure strength and accuracy during transmission. The drive wheel 71 and driven wheel 72 are mostly made of aluminum alloy, steel, or engineering plastics, and their surfaces can be treated (such as oxidation or quenching) to improve wear resistance. This is merely an example and not a specific limitation.
[0052] Optionally, the battery pack lifting device further includes: a first guide wheel 74, which is mounted on the first movable frame 10 on the same side as the drive wheel 71; a second guide wheel 75, which is mounted on the first movable frame 10 on the same side as the driven wheel 72; and a synchronous belt is sequentially connected to the drive wheel 71, the first guide wheel 74, the driven wheel 72 and the second guide wheel 75.
[0053] It is understandable that there can be two first guide pulleys 74 and two second guide pulleys 75; one first guide pulley 74 and one second guide pulley 75 correspond to one crossbeam, and another first guide pulley 74 and another second guide pulley 75 correspond to another crossbeam. The main function of the first guide pulleys 74 and second guide pulleys 75 is to guide. Their outer peripheral walls do not need to have tooth grooves; their outer peripheral walls are smooth. Sufficient tension allows the synchronous belt to fit tightly against the tooth grooves of the drive pulley 71 and the driven pulley 72, ensuring a good meshing state. The first guide pulleys 74 and second guide pulleys 75 can change the running direction of the synchronous belt and increase the tension of the synchronous belt. By changing the direction of the synchronous belt, the first guide pulleys 74 and second guide pulleys 75 generate additional positive pressure when the synchronous belt passes over the first guide pulleys 74 and second guide pulleys 75, which is then converted into tension. The stability, transmission accuracy, and working efficiency of the synchronous belt drive system are effectively improved.
[0054] The drive wheel 71, driven wheel 72, first guide wheel 74, and second guide wheel 75 are all located above the crossbeam; the middle part of the synchronous belt is located above the drive wheel 71 and driven wheel 72, and the two ends pass around the drive wheel 71 and driven wheel 72 respectively, change direction and reach the first guide wheel 74 and the second guide wheel 75, and then the two ends pass around the first guide wheel 74 and the second guide wheel 75 respectively and change direction to connect to the two ends of the crossbeam.
[0055] As the drive wheel 71, the tension of the synchronous belt is the direct carrier of power transmission. The synchronous belt between the drive wheel 71 and the first guide wheel 74 is designed to be inclined upward, which helps to improve the tension of the synchronous belt near the drive wheel 71, enhance torque transmission and anti-slip capability, ensure meshing synchronization and motion stability, and improve the transportation efficiency of the battery pack transportation device.
[0056] Optionally, the lifting frame 30 is provided with a clamping component 81 at the end away from the first movable frame 10, and the clamping component 81 is used to clamp and fix the battery pack.
[0057] By setting the above structure, the clamping component 81 can firmly fix the battery pack, preventing the battery pack from slipping off during the movement of the lifting frame 30 due to device vibration, changes in moving speed, or external interference. This reduces the risk of safety accidents and protects the safety of the equipment and operators.
[0058] Furthermore, the clamping component 81 can quickly clamp and release the battery pack, which helps to significantly shorten the operation time and improve the clamping and release efficiency of the battery pack.
[0059] Optionally, the clamping assembly 81 has a connecting end and a clamping end. The connecting end of the clamping assembly 81 is rotatably connected to the lifting frame 30. The rotation axis of the connecting end is parallel to a third direction. The clamping end is used to clamp the battery pack.
[0060] By setting the above structure, the clamping end can rotate flexibly on the horizontal plane, which can adapt to different placement angles or installation position requirements of the battery pack. For example, when there is a deviation between the interface direction of the battery pack and the initial clamping direction of the lifting device, there is no need to adjust the position of the entire lifting frame 30 or the moving frame. The battery pack can be aligned with the target position simply by rotating the clamping assembly 81, which greatly simplifies the docking process and improves the convenience of operation.
[0061] Optionally, the battery pack lifting device also includes an electrical box 91, which is mounted on the first movable frame 10.
[0062] By setting up the above structure, since the first moving frame 10 is located at the highest point of the device, it can be kept away from the possible collision area when the lifting frame 30 is lifted. The electrical box 91 is located here to reduce the impact of external impact on internal controllers, relays and other precision electrical components, thereby extending the service life of the components.
[0063] Secondly, the transportation system provided by this utility model includes the aforementioned battery pack lifting device.
[0064] The beneficial effects of the transportation system in this embodiment compared to the prior art are the same as those of the battery pack lifting device described above, and will not be repeated here. Although the present invention has been disclosed above, the protection scope of the present invention is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.
Claims
1. A battery pack lifting device, characterized in that, include: The first movable frame (10) is movable along the first direction and connected to the crossbeam; The second movable frame (20) is movable and connected to the first movable frame (10) in the second direction; The lifting frame (30) is movable and connected to the second movable frame (20) in a third direction; The first drive motor (40) has its fixed end mounted on the second movable frame (20), and its drive end is connected to the lifting frame (30) to drive the lifting frame (30) to move. The transmission structure (50) has a gear (51) and a rack (52). The gear (51) is driven to the drive shaft of the first drive motor (40). The first drive motor (40) is used to drive the gear (51) to rotate. The rack (52) is provided on the outer peripheral wall of the lifting frame (30). The extension direction of the rack (52) is the same as the third direction. The gear (51) meshes with the rack (52). The first drive motor (40) drives the gear (51) to rotate so as to drive the gear (51) and the lifting frame (30) to move synchronously. The first direction, the second direction, and the third direction are all perpendicular to each other.
2. The battery pack lifting device according to claim 1, characterized in that, The battery pack lifting device also includes a guide structure, which is located between the second movable frame (20) and the lifting frame (30). The guide structure is used to guide the movement of the lifting frame (30).
3. The battery pack lifting device according to claim 2, characterized in that, The guiding structure includes a guide rail (60) and a guide block (61). The guide rail (60) is disposed on one of the second movable frame (20) and the lifting frame (30), and the guide block (61) is disposed on the other of the second movable frame (20) and the lifting frame (30). The extension direction of the guide rail (60) is the same as the movement direction of the lifting frame (30), and the guide block (61) is movably disposed on the guide rail (60) to guide the movement of the lifting frame (30).
4. The battery pack lifting device according to claim 3, characterized in that, The second movable frame (20) is a first frame structure with a hollow first chamber, and the lifting frame (30) is a second frame structure, which is movable and disposed in the first chamber along the third direction.
5. The battery pack lifting device according to claim 1, characterized in that, The battery pack lifting device also includes: A drive wheel (71) is located at one end of the first movable frame (10) in the first direction; Driven wheel (72) is located at the other end of the first movable frame (10) in the first direction; A timing belt is wound around the drive wheel (71) and the driven wheel (72), and the two ends of the timing belt are respectively fixed to the two ends of the crossbeam; The second driving member (73) is driven to drive the driving wheel (71). The second driving member (73) drives the driving wheel (71) to rotate so as to drive the driven wheel (72) to rotate synchronously through the synchronous belt, so that the first moving frame (10) moves along the first direction.
6. The battery pack lifting device according to claim 5, characterized in that, The battery pack lifting device also includes: The first guide wheel (74) is disposed on the same side as the drive wheel (71) on the first movable frame (10); The second guide wheel (75) is disposed on the same side as the driven wheel (72) on the first movable frame (10), and the synchronous belt is sequentially attached to the drive wheel (71), the first guide wheel (74), the driven wheel (72) and the second guide wheel (75).
7. The battery pack lifting device according to claim 1, characterized in that, The lifting frame (30) has a clamping assembly (81) at one end away from the first moving frame (10), which is used to clamp and fix the battery pack.
8. The battery pack lifting device according to claim 7, characterized in that, The clamping assembly (81) has a connecting end and a clamping end. The connecting end of the clamping assembly (81) is rotatably connected to the lifting frame (30). The rotation axis of the connecting end is parallel to the third direction. The clamping end is used to clamp the battery pack.
9. The battery pack lifting device according to claim 1, characterized in that, The battery pack lifting device also includes an electrical box (91), which is mounted on the first movable frame (10).
10. A transportation system, characterized in that, Includes the battery pack lifting device as described in any one of claims 1 to 9.