A battery replacing device

Abstract

This invention relates to the field of new energy battery swapping technology, specifically disclosing a battery swapping device including a battery swapping platform and a lifting device. The lifting device acts on the battery swapping platform to raise and lower it. The lifting device includes a lifting drive unit and a transmission unit connected by transmission. The transmission unit includes a linkage telescopic mechanism, which includes two cross-connected rod assemblies, with the same side of the two rod assemblies facing the battery swapping platform. The battery swapping device provided by this invention includes a lifting device acting on the battery swapping platform, enabling the battery swapping platform to move up and down during the disassembly or installation of battery packs. This is safe and reliable. The linkage telescopic mechanism can improve the stability and verticality of the battery swapping platform during lifting and lowering, saving space occupied in the relative movement direction, resulting in a compact structure. Having the same side of the two rod assemblies facing the battery swapping platform simplifies the structure, reduces the lateral volume of the battery swapping device, decreases the overall size, and improves battery swapping efficiency.

Description

Technical Field

[0001] This invention relates to the field of new energy battery swapping technology, specifically to a battery swapping device. Background Technology

[0002] With the development and popularization of new energy vehicles, battery pack quick-swap technology has also developed rapidly. Currently, quick-swap technology is most mature in small passenger vehicles. Since passenger vehicle batteries are fixed to the vehicle chassis, specialized battery swapping equipment needs to be moved to the bottom of the vehicle for battery removal or installation when replacing the battery pack. Moreover, due to the relatively small weight of passenger vehicles, the battery pack is also relatively small, making battery replacement very convenient.

[0003] However, for large vehicles, such as heavy-duty or light-duty trucks, the large vehicle body and cargo weight result in high demands for battery pack capacity. Sufficiently large electrical capacity is required to support the vehicle's range of hundreds of kilometers. Therefore, in current technology, large new energy vehicles typically use a top-mounted method to fix a large battery container to the vehicle's frame, with the battery container positioned close to the cab. This creates significant safety hazards for the driver and the vehicle itself during driving and the top-mounted battery swapping process. Furthermore, battery malfunctions can directly cause personal injury to the driver. Additionally, the top-mounted method requires a large enough area for the battery swapping station to operate the hoisting equipment, transfer batteries, and store them, leading to high construction costs.

[0004] Therefore, a safer, more reliable, and easier-to-adopt battery swapping mode is urgently needed for large vehicles. For example, a chassis-based battery swapping mode for passenger cars could be adopted. In this mode, the battery swapping equipment (or swapping trolley) needs to be moved to a swapping position under the vehicle, followed by lifting and removing / installing the battery pack to complete the swapping process. However, this process requires lifting the battery pack: lowering the already unlocked, depleted battery pack to a lower position for easy transfer to a charging platform, and lifting the fully charged battery pack to a higher position that can be locked to the vehicle. Due to limited space under the vehicle and the need for precise control of the battery pack's lifting stroke, existing lifting devices are complex in structure, occupy a large amount of space, and their lifting stroke is limited by the height of the swapping base itself. Therefore, the lifting equipment used in chassis-based battery swapping needs optimization. Summary of the Invention

[0005] The purpose of this invention is to provide a battery swapping device to solve at least one of the following problems commonly found in existing battery swapping vehicles such as heavy trucks: complex battery swapping operation, low precision, complex lifting device structure, and large space occupation.

[0006] To achieve the above objectives, the present invention provides a battery swapping device, including a battery swapping platform and a lifting device. The lifting device acts on the battery swapping platform to raise and lower the platform. The lifting device includes a lifting drive unit and a transmission unit that are connected by transmission. The transmission unit includes a linkage telescopic mechanism, which includes two cross-connected rod assemblies with the same side of the two rod assemblies facing the battery swapping platform.

[0007] The battery swapping equipment provided by this invention includes a lifting device that acts on the battery swapping platform. This device moves the platform up and down during the disassembly or installation of battery packs, enabling chassis-based battery swapping, which is safer, more reliable, and easier to implement. The lifting device ensures the convenience, accuracy, and efficiency of the preparatory work for battery pack disassembly and installation. The lifting drive unit and transmission unit work together to lift the battery swapping platform, ensuring timely and feasible control of the lifting position, thus guaranteeing the control precision of the entire lifting process. The linkage telescopic mechanism improves the stability and verticality of the battery swapping platform's lifting. In the retracted state, it occupies less space along the direction of movement, saving space relative to the direction of movement. Simultaneously, the lifting stroke far exceeds the space occupied in the retracted state, making the battery swapping equipment more compact in the direction of movement while ensuring sufficient lifting stroke. Both rod assemblies face the battery swapping platform from the same side, thus reducing the number of rod assemblies and lifting drive units, simplifying the structure, reducing the lateral volume of the battery swapping equipment, decreasing the overall size, and improving battery swapping efficiency.

[0008] Preferably, the linkage telescopic mechanism has a fixed connection position and a lifting connection position for acting on the battery swapping platform. By controlling the cross angle of the two rod assemblies, the lifting connection position is raised or lowered relative to the fixed connection position.

[0009] By controlling the intersection angle of the two rod assemblies, the lifting connection position is raised or lowered relative to the fixed connection position, thereby controlling the raising and lowering of the battery swapping platform, improving the stability and verticality of the platform's raising and lowering. The structure is simple, the lifting stroke is large, and the control is accurate.

[0010] Preferably, each rod assembly has a rotating connection end for rotatable connection and a movable connection end for movable connection at both ends; the upper ends of the two rod assemblies of the linkage telescopic mechanism are the rotating connection end and the movable connection end, respectively, and together they form a lifting connection position; the lower ends of the two rod assemblies of the linkage telescopic mechanism are the rotating connection end and the movable connection end, respectively, and together they form a fixed connection position.

[0011] Preferably, the rotating connection end is rotated through a rotating pair, and the movable connection end is slidably connected through a sliding pair.

[0012] Preferably, the rotary pair includes a rotatably connected rotating seat and a rotating shaft; or the sliding pair includes a slidably connected slide rail and a slider, or a slidably connected roller and a slide groove.

[0013] Rotary joints achieve rotational connection at the rotating end, while sliding joints achieve sliding connection at the moving end. These joints, serving as intermediate connections, are simple and reliable, effectively ensuring reliable connections between the rod assembly's ends and other components. This prevents detachment and subsequent jamming or failure of the linkage-type telescopic mechanism, guaranteeing smooth lifting and lowering of the battery swapping platform. Preferably, the rotary joint includes a rotatably connected rotating seat and rotating shaft; alternatively, the sliding joint includes a slidably connected slide rail and slider, or a slidably connected roller and slide groove.

[0014] Preferably, the lifting device further includes a lifting stroke protection mechanism, which includes a first lifting stroke protection mechanism for limiting the movement range of the movable connection end; or, the lifting stroke protection mechanism includes a second lifting stroke protection mechanism for limiting the relative sliding stroke of the sliding pair.

[0015] The first and second lifting stroke protection mechanisms provide limit position protection for the highest and lowest lifting positions. This prevents the battery swapping platform from exceeding its lifting range, thus avoiding swapping failure and ensuring swapping efficiency.

[0016] Preferably, multiple lifting devices are symmetrically arranged on two opposite sides of the battery swapping platform.

[0017] This allows the battery swapping platform to be evenly subjected to the lifting force on both sides, thus ensuring smooth lifting and lowering and guaranteeing a smooth battery swapping process.

[0018] Preferably, the lifting device further includes a transition section, which includes an interconnected transition member and a low-position extension member. The transition member is connected to the upper end of the linkage telescopic mechanism, and the low-position extension member extends downward from the transition member to form a lifting connection position, used to lower the height of the battery swapping platform when the linkage telescopic mechanism is in the retracted state.

[0019] By using adapters and low-profile extensions, the height of the battery swapping platform can be further reduced, resulting in a compact structure that is more suitable for situations where space is limited at the bottom of the vehicle.

[0020] Preferably, the upper ends of the two rod assemblies of the linkage telescopic mechanism are connected to the adapter, and the lower extension is connected to the adapter and located on the same side of the two rod assemblies of the linkage telescopic mechanism.

[0021] Preferably, the adapter is a grooved cross-section profile, and the connection between the upper ends of the two rod components of the linkage telescopic mechanism and the adapter is located in the groove of the grooved cross-section profile.

[0022] Preferably, the lower extension includes a vertical plate, the top of which is connected to the adapter, and the bottom of which forms the lifting connection position.

[0023] By using a vertical plate, the overall height of the battery swapping equipment is reduced after the battery swapping platform is lowered, making it easier to access the bottom of the vehicle. This results in high battery swapping efficiency and adaptability to different vehicle models with varying chassis heights and battery packs of different heights and sizes.

[0024] Preferably, the battery swapping platform is connected to the bottom end of the low-position extension.

[0025] Further reduce the overall height of the battery swapping platform after it is lowered.

[0026] Preferably, each rod assembly includes a rod, and the rods of two rod assemblies intersect each other and are rotatably connected at the intersection.

[0027] Each rod assembly includes a rod, which simplifies the structure of the rod assembly and reduces the height of the rod assembly after it is lowered.

[0028] Preferably, each rod assembly includes multiple rods that are rotatably connected in sequence, and the rods of two rod assemblies are arranged in a one-to-one correspondence, with the corresponding rods intersecting each other and rotatably connected at the intersection.

[0029] By setting multiple sequentially rotatable rods in each rod assembly, the height of the rod assembly after it is raised can be increased, thereby improving the lifting stroke of the battery swapping platform.

[0030] Preferably, the lifting drive unit is used to output linear motion to drive the linkage telescopic mechanism to extend and retract, and the lifting drive unit includes a linear power output unit.

[0031] Preferably, the linear power output unit includes a cylinder or a hydraulic cylinder.

[0032] By adopting a linear power output unit, the structure is simple and does not require complex transmission components, thus simplifying the structure of the power swapping equipment.

[0033] Preferably, the battery swapping equipment includes a guiding device for assisting the lifting platform in lifting and guiding it during the lifting process, wherein the guiding direction of the guiding device is consistent with the lifting direction of the lifting platform.

[0034] Preferably, the guiding device includes a guide rail disposed on the side of the battery swapping equipment and a slider disposed on the corresponding surface of the battery swapping platform.

[0035] By setting up a guiding device, the lifting stability of the battery swapping platform is improved, and the combination of guide rails and sliders makes the guiding effect better.

[0036] Preferably, there are multiple lifting devices, which are located on two opposite sides of the battery swapping platform, and guide rails are located on the two sides of the battery swapping equipment where no lifting devices are installed.

[0037] The lifting device and guide rails are arranged in the above positions to achieve all-round guidance and support for the battery swapping platform, resulting in better guidance and improved lifting stability of the battery swapping platform.

[0038] Preferably, the battery swapping equipment further includes a battery swapping base, the battery swapping platform is raised and lowered relative to the battery swapping base, and the guiding device includes a first rod assembly and a second rod assembly. Both the first rod assembly and the second rod assembly have a movable connecting end for movably connecting to one of the battery swapping platform and the battery swapping base, and a rotating connecting end for rotatably connecting to the other of the battery swapping platform and the battery swapping base. The first rod assembly and the second rod assembly are hinged to each other so that the guiding device extends and retracts in the direction of the raising and lowering of the battery swapping platform as the battery swapping platform is raised and lowered.

[0039] By employing a first and second rod assembly as a guiding method, the battery swapping platform can be guided. Compared with existing guiding devices, this guiding assembly occupies less space along the direction of movement and saves space in the vertical direction. It can effectively reduce the height of the battery swapping equipment while ensuring the lifting stroke, so as to meet the battery swapping needs of electric vehicles, especially electric vehicles with low chassis.

[0040] Preferably, the battery swapping equipment also includes a battery swapping base, which has an upward-facing accommodating area. The battery swapping platform moves up and down in the accommodating area. The dimensions of the accommodating area along the width of the battery swapping vehicle match the width of the battery swapping vehicle. Lifting devices are located on two opposite sides of the accommodating area along the width of the battery swapping vehicle.

[0041] The storage area allows the battery swapping platform to be stored at its lowest position, facilitating the insertion of the battery swapping equipment under the vehicle, thereby reducing the overall height and ensuring the lifting range.

[0042] Preferably, the battery swapping platform is provided with a vehicle body positioning part extending outward from the battery swapping base, and the base is provided with a recessed part, which is used to avoid the vehicle body positioning part so that the vehicle body positioning part can extend out from the recessed part, thereby reducing the height of the battery swapping platform.

[0043] The vehicle positioning unit positions the battery swapping platform relative to the vehicle, which facilitates the subsequent movement and unlocking of the battery swapping platform. This ensures that the battery swapping equipment and the vehicle remain relatively stationary during the unlocking process, allowing unlocking to be achieved solely by moving the battery swapping platform. This results in accurate and reliable control and improved battery swapping efficiency.

[0044] Preferably, the battery swapping equipment also includes a battery swapping base, on which a traveling mechanism is provided for driving the battery swapping equipment to move.

[0045] By using the battery swapping base as a supporting foundation, the structure of the battery swapping equipment is made complete and stable. The walking mechanism is used to drive the battery swapping equipment to move, making the battery swapping movement smooth, flexible in use, and improving the battery swapping efficiency. Attached Figure Description

[0046] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0047] Figure 1 This is a schematic diagram of the structure of a power swapping device in one embodiment of the present invention.

[0048] Figure 2 This is a schematic diagram of the cooperation structure between the linkage telescopic mechanism and the hydraulic cylinder in one embodiment of the present invention.

[0049] Figure 3 This is a top view schematic diagram of the structure of a power swapping device in one embodiment of the present invention.

[0050] Figure 4 This is a schematic diagram showing the connection between the hydraulic cylinder of the linkage telescopic mechanism and the battery swapping platform in one embodiment of the present invention.

[0051] Figure 5 This is a schematic diagram of the structure of the adapter in one embodiment of the present invention.

[0052] Figure 6 This is a schematic diagram of the guiding device in one embodiment of the present invention.

[0053] Explanation of reference numerals in the attached figures:

[0054] 100-Lifting device; 200-Battery swapping equipment; 201-Battery swapping platform; 2011-Vehicle positioning unit; 202-Battery swapping base; 2021-Accommodation area; 2022-Traveling mechanism; 203-Guiding device; 400-Lifting drive unit; 410-Hydraulic cylinder; 510-Link-type telescopic mechanism; 520-Link; 5201-First link; 5202-Second link; 511-Fixed connection position; 512-Lifting connection position; 513-First link assembly; 514-Second link assembly; 515-Rotating connection end; 516-Moving connection end; 519-Sliding pair; 517-Rotating pair; 5171-Rotating seat; 5172-Rotating shaft; 600-Lifting stroke protection mechanism; 710-Adapter; 720-Low-position extension; 7201-Upright plate. Detailed Implementation

[0055] To more clearly illustrate the overall concept of the present invention, a detailed description will be provided below with reference to the accompanying drawings and examples.

[0056] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0057] In one embodiment of the present invention, such as Figure 1-6 As shown, a battery swapping device 200 is provided, including a battery swapping platform 201 and a lifting device 100. The lifting device 100 acts on the battery swapping platform 201 to raise and lower it. The lifting device 100 includes a lifting drive unit 400 and a transmission unit that are connected by a transmission. The transmission unit includes a linkage telescopic mechanism 510, which includes two cross-connected rod assemblies with the same side of the two rod assemblies facing the battery swapping platform 201. (Reference) Figure 1 Regarding the fact that both rod assemblies face the battery swapping platform from the same side, i.e., the rod assemblies extend along the left side of the battery swapping platform, therefore the right sides of both rod assemblies face the battery swapping platform. The transmission principle of the linkage telescopic mechanism 510 will be detailed later in conjunction with specific implementation methods.

[0058] The battery swapping equipment 200 provided by this invention includes a lifting device 100 acting on a battery swapping platform 201. This device enables the battery swapping platform 201 to move up and down during the disassembly or installation of the battery pack 300, thus achieving chassis-type battery swapping, which is safer, more reliable, and easier to implement. The lifting device 100 ensures the convenience, accuracy, and efficiency of the preparatory work for disassembly and installation of the battery pack 300. The lifting drive unit 400 and the linkage telescopic mechanism 510 work together to lift the battery swapping platform 201, ensuring timely and feasible control of the lifting position, thereby guaranteeing the control precision of the entire lifting process. The linkage telescopic mechanism 510 improves the stability and verticality of the battery swapping platform 201 during lifting. In the retracted state, it occupies less space along the direction of movement, saving space relative to the direction of movement. Simultaneously, the lifting stroke far exceeds the space occupied in the retracted state, making the battery swapping equipment 200 more compact in the direction of movement while ensuring the lifting stroke. The two pole assemblies face the battery swapping platform 201 on the same side, thereby saving the number of pole assemblies and lifting drive units 400, simplifying the structure, reducing the lateral volume of the battery swapping equipment, reducing the overall size, and improving battery swapping efficiency.

[0059] In a preferred embodiment, the linkage telescopic mechanism 510 is provided with a fixed connection position 511 and a lifting connection position 512 for acting on the battery swapping platform 201. By controlling the intersection angle of the two rod assemblies, the lifting connection position 512 is raised or lowered relative to the fixed connection position 511.

[0060] By controlling the cross angle of the two rod assemblies, the lifting connection position 512 is raised or lowered relative to the fixed connection position 511, thereby controlling the raising and lowering of the battery swapping platform 201, improving the stability and verticality of the raising and lowering of the battery swapping platform 201. The structure is simple, the lifting stroke is large, and the control is accurate.

[0061] In a preferred embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, each rod assembly has a rotating connection end 515 for rotatable connection and a movable connection end 516 for movable connection at both ends; the upper ends of the two rod assemblies of the linkage telescopic mechanism 510 are the rotating connection end 515 and the movable connection end 516, respectively, and together they form a lifting connection position 512; the lower ends of the two rod assemblies of the linkage telescopic mechanism 510 are the rotating connection end 515 and the movable connection end 516, respectively, and together they form a fixed connection position 511.

[0062] It should be noted that, due to the change in the cross angle, the movement of the rotating connection end 515 is not limited to just rotation. For example, while the rotating connection end 515 of the first rod 5201 is pulled linearly by the moving connection end 516, it will rotate relative to the second rod 5202 to achieve the lifting and lowering movement of the rotating connection end 515. Therefore, the rotating connection end at the upper end of the first rod 5201 can form a lifting and lowering connection position with the moving connection end at the upper end of the second rod 5202.

[0063] In a preferred embodiment, such as Figure 1 and Figure 2 As shown, the rotating connection end 515 is rotated through the rotating joint 517, and the movable connection end 516 is slidably connected through the sliding joint 519.

[0064] In a preferred embodiment, such as Figure 3 As shown, the rotary pair 517 includes a rotatably connected rotating seat 5171 and a rotating shaft 5172; or, the sliding pair 519 includes a slidably connected slide rail and slider, or a slidably connected roller and slide groove.

[0065] Rotary joint 517 enables the rotational connection of the rotating connecting end 515, and sliding joint 519 enables the sliding connection of the moving connecting end 516. Rotary joint 517 and sliding joint 519 serve as intermediate connecting structures, possessing a simple and reliable structure. They effectively ensure reliable connections between the two ends of the rod assembly and other components, preventing detachment and thus avoiding operational jamming or failure of the linkage telescopic mechanism 510, ensuring smooth lifting and lowering of the battery swapping platform 201. Preferably, rotary joint 517 includes a rotatably connected rotating seat 5171 and rotating shaft 5172; or, sliding joint 519 includes a slidably connected slide rail and slider, or a slidably connected roller and slide groove.

[0066] In a preferred embodiment, such as Figure 1 As shown, the lifting device 100 also includes a lifting stroke protection mechanism 600, which includes a first lifting stroke protection mechanism 600 for limiting the movement range of the movable connection end 516; or, the lifting stroke protection mechanism 600 includes a second lifting stroke protection mechanism 600 for limiting the relative sliding stroke of the sliding pair 519.

[0067] The first lifting stroke protection mechanism 600 and the second stroke protection mechanism provide limit position protection for the highest and lowest lifting positions. This prevents the battery swapping platform 201 from exceeding the battery swapping range, thus avoiding battery swapping failure and ensuring battery swapping efficiency.

[0068] Preferably, multiple lifting devices 100 are symmetrically arranged on two opposite sides of the battery swapping platform 201.

[0069] This allows the battery swapping platform 201 to be evenly subjected to the force of the lifting device 100 on both sides, thus ensuring smooth lifting and lowering and guaranteeing a smooth battery swapping process.

[0070] In a preferred embodiment, the lifting device 100 further includes a transition section, which includes a transition member 710 and a low-position extension member 720 connected to each other. The transition member 710 is connected to the upper end of the linkage telescopic mechanism 510, and the low-position extension member 720 extends downward from the transition member 710 to form a lifting connection position 512, which is used to lower the height of the battery swapping platform 201 when the linkage telescopic mechanism 510 is in the retracted state.

[0071] The height of the battery swapping platform 201 can be further reduced by the adapter 710 and the low-position extension 720, resulting in a compact structure that is more suitable for situations where the space under the vehicle is limited.

[0072] Preferably, the upper ends of the two rod assemblies of the linkage telescopic mechanism 510 are connected to the adapter 710, and the lower extension 720 is connected to the adapter 710 and located on the same side of the two rod assemblies of the linkage telescopic mechanism 510.

[0073] Preferably, the adapter 710 has an upward-facing groove-shaped cross-section profile 712, and the connection between the upper ends of the two rod assemblies of the linkage telescopic mechanism 510 and the adapter 710 is located in the groove of the groove-shaped cross-section profile 712.

[0074] Preferably, the lower extension member 720 includes a vertical plate 7201, the top end of which is connected to the adapter 710, and the bottom end of the vertical plate forms the lifting connection position.

[0075] The L-shaped vertical plate 7201 and horizontal plate structure reduce the overall height of the battery swapping equipment 200 after the battery swapping platform 201 is lowered, making it easier to access the bottom of the vehicle and resulting in high battery swapping efficiency.

[0076] Preferably, the battery swapping platform 201 is connected to the bottom end of the low-position extension 720.

[0077] Further reduce the overall height of the battery swapping platform 201 after it is lowered.

[0078] Preferably, each rod assembly includes a rod 520, and the rods 520 of the two rod assemblies, namely the first rod 5201 and the second rod 5202, intersect each other and are rotatably connected at the intersection.

[0079] Each rod assembly includes a rod 520, which simplifies the structure of the rod assembly and reduces the height of the rod assembly after it is lowered.

[0080] Preferably, each rod assembly includes multiple rods 520 that are rotatably connected in sequence. The rods 520 of the two rod assemblies are arranged in a one-to-one correspondence, and the corresponding rods 520 intersect each other and are rotatably connected at the intersection.

[0081] Of course, in another embodiment of the present invention, multiple sequentially rotatable rods 520 can be provided for each rod assembly, which can increase the height of the rod assembly after it is raised, thereby increasing the lifting stroke of the battery swapping platform 201.

[0082] Preferably, the lifting drive unit 400 is used to output linear motion to drive the linkage telescopic mechanism 510 to extend or retract, and the lifting drive unit 400 includes a linear power output unit.

[0083] In a preferred embodiment of the present invention, the linear power output unit includes a cylinder and a hydraulic cylinder 410. For example... Figure 1 and Figure 2 As shown, a hydraulic cylinder 410 is used in a preferred embodiment.

[0084] By adopting a linear power output unit, the structure is simple and does not require complex transmission components, thus simplifying the structure of the power swapping equipment 200.

[0085] The present invention does not limit the specific structure of the guiding device, for example:

[0086] Example 1: The battery swapping equipment 200 includes a guide device 203 for assisting the lifting platform in lifting and guiding it during the lifting process. The guiding direction of the guide device 203 is consistent with the lifting direction of the lifting platform.

[0087] Preferably, the guide device 203 includes a guide rail disposed on the side of the battery swapping equipment 200 and a slider disposed on the corresponding surface of the battery swapping platform 201.

[0088] By setting up the guide device 203, the lifting stability of the battery swapping platform 201 is improved, and the guide rail and slider are used in combination to make the guiding effect better.

[0089] Preferably, multiple lifting devices 100 are provided, and the multiple lifting devices 100 are provided on two opposite sides of the battery swapping platform 201. The guide rails are provided on the two sides of the battery swapping equipment 200 where no lifting devices 100 are provided.

[0090] The lifting device 100 and the guide rail are arranged in the above positions to achieve all-round guidance and support for the battery swapping platform 201, resulting in better guidance effect and better lifting stability of the battery swapping platform 201.

[0091] Example 2, as Figure 6 As shown, the battery swapping equipment 200 also includes a battery swapping base 202, and the battery swapping platform 201 is raised and lowered relative to the battery swapping base 202. The guiding device 203 includes a first rod assembly 513 and a second rod assembly 514. Both the first rod assembly 513 and the second rod assembly 514 have a movable connecting end 516 for movably connecting to one of the battery swapping platform 201 and the battery swapping base 202, and a rotating connecting end 515 for rotatably connecting to the other of the battery swapping platform 201 and the battery swapping base 202. The first rod assembly 513 and the second rod assembly 514 are hinged to each other so that the guiding device 203 extends and retracts along the lifting direction of the battery swapping platform 201 as the battery swapping platform 201 is raised and lowered.

[0092] By employing the guiding method of the first rod assembly 513 and the second rod assembly 514, the battery swapping platform 201 can be guided. Compared with the guiding device 203 in the prior art, this guiding assembly occupies less space along the moving direction and can save space in the height direction (vertical direction). While ensuring the lifting stroke, it can effectively reduce the height of the battery swapping equipment 200 to meet the battery swapping needs of electric vehicles, especially electric vehicles with low chassis.

[0093] In a preferred embodiment of the present invention, the battery swapping equipment 200 further includes a battery swapping base 202, in which an upward-opening receiving area 2021 is formed. The battery swapping platform 201 rises and falls within the receiving area 2021. The dimensions of the receiving area 2021 along the width direction of the battery swapping vehicle match the width of the battery swapping vehicle. The lifting device 100 is disposed on two opposite sides of the receiving area 2021 along the width direction of the battery swapping vehicle.

[0094] The storage area 2021 provides storage for the battery swapping platform 201 at its lowest position, making it easy for the battery swapping equipment 200 to enter the bottom of the vehicle, thereby reducing the overall height and ensuring the lifting stroke.

[0095] Preferably, the battery swapping platform 201 is provided with a vehicle body positioning part 2011 extending outward from the battery swapping base 202, and the battery swapping base 202 is provided with a recessed part, which is used to avoid the vehicle body positioning part so that the vehicle body positioning part can extend out from the recessed part, thereby reducing the height of the battery swapping platform 201.

[0096] Positioning the battery swapping platform 201 with the vehicle body positioning unit facilitates subsequent movement and unlocking, ensuring that the battery swapping equipment 200 and the vehicle remain relatively stationary during the unlocking process. This allows unlocking to be achieved by moving only the battery swapping platform 201, resulting in accurate and reliable control and improved battery swapping efficiency.

[0097] Preferably, the battery swapping equipment 200 also includes a battery swapping base 202, on which a walking mechanism 2022 is provided, which is used to drive the battery swapping equipment 200 to move.

[0098] By using the battery swapping base 202 as a supporting foundation, the structure of the battery swapping equipment 200 is made complete and stable. The walking mechanism 2022 is used to drive the battery swapping equipment 200 to move, making the battery swapping movement smooth, flexible in use, and improving the battery swapping efficiency.

[0099] This invention is in Figure 1-6 In the embodiment shown, a set of rod assemblies is respectively set on the left and right sides of the battery swapping platform. The movement principle of each rod assembly is as follows: Figure 2 As shown, the hydraulic cylinder 410 extends and retracts laterally along the arrow, thereby causing the movable connecting end 516 at the bottom of the first rod 5201 to move laterally. With the change of the cross angle relative to the second rod 5202, the rotating connecting end 515 at the top of the first rod 5201 will rotate and move up and down. The rotating connecting end at the bottom of the second rod 5202 adapts to the change, and the movable connecting end at the top of the second rod 5202 moves up and down. Therefore, the rotating connecting end at the top of the first rod 5201 can form a lifting connection position with the movable connecting end at the top of the second rod 5202, thereby driving the battery swapping platform to rise and fall.

[0100] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", 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 invention 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 limiting this invention.

[0101] In this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0102] The technical solutions protected by this invention are not limited to the above embodiments. It should be noted that any combination of the technical solutions of any embodiment with one or more other embodiments is within the protection scope of this invention. Although the invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of this invention are within the scope of protection claimed by this invention.

Claims

1. A battery swapping device, characterized in that, The device includes a battery swapping platform and a lifting device. The lifting device acts on the battery swapping platform to raise and lower it. The lifting device includes a lifting drive unit and a transmission unit that are connected by a transmission. The transmission unit includes multiple linkage telescopic mechanisms arranged on two opposite sides of the battery swapping platform. The linkage telescopic mechanisms extend along the sides of the battery swapping platform. Each linkage telescopic mechanism includes two cross-connected rod assemblies. The same side of the two rod assemblies faces the battery swapping platform. The lifting drive unit controls the raising and lowering of the battery swapping platform by controlling the cross angle of the two rod assemblies. The lifting device also includes a transition section, which includes a low-position extension member that extends downward to form a lifting connection position for lowering the height of the battery swapping platform when the linkage telescopic mechanism is in the retracted state.

2. The battery swapping device according to claim 1, characterized in that, The linkage telescopic mechanism is provided with a fixed connection position and a lifting connection position for acting on the battery swapping platform. By controlling the intersection angle of the two rod assemblies, the lifting connection position is raised or lowered relative to the fixed connection position.

3. A battery swapping device according to claim 2, characterized in that, Each of the two ends of the rod assembly is a rotating connection end for rotatable connection and a movable connection end for movable connection; the upper ends of the two rod assemblies of the linkage telescopic mechanism are the rotating connection end and the movable connection end, respectively, and together they constitute the lifting connection position; the lower ends of the two rod assemblies of the linkage telescopic mechanism are the rotating connection end and the movable connection end, respectively, and together they constitute the fixed connection position.

4. A battery swapping device according to claim 3, characterized in that, The rotating connection end achieves a rotating connection through a rotating pair, and the movable connection end achieves a sliding connection through a sliding pair.

5. A battery swapping device according to claim 4, characterized in that, The rotating pair includes a rotating seat and a rotating shaft that are rotatably connected; or the sliding pair includes a slide rail and a slider that are slidably connected, or a roller and a slide groove that are slidably connected.

6. A battery swapping device according to claim 4, characterized in that, The lifting device further includes a lifting stroke protection mechanism, which includes a first lifting stroke protection mechanism for limiting the movement range of the movable connection end; or, the lifting stroke protection mechanism includes a second lifting stroke protection mechanism for limiting the relative sliding stroke of the sliding pair.

7. A battery swapping device according to claim 1, characterized in that, Multiple lifting devices are symmetrically arranged on two opposite sides of the battery swapping platform.

8. A battery swapping device according to claim 1, characterized in that, The adapter also includes an adapter component, which is connected to the lower extension component. The adapter component is connected to the upper end of the linkage telescopic mechanism. The lower extension component extends downward from the adapter component to form the lifting connection position, which is used to reduce the height of the battery swapping platform when the linkage telescopic mechanism is in the retracted state.

9. A battery swapping device according to claim 8, characterized in that, The upper ends of the two rod assemblies of the linkage telescopic mechanism are connected to the adapter, and the lower extension is connected to the adapter and located on the same side of the two rod assemblies of the linkage telescopic mechanism.

10. A battery swapping device according to claim 8, characterized in that, The adapter is a grooved cross-section profile, and the connection point between the upper ends of the two rod assemblies of the linkage telescopic mechanism and the adapter is located in the groove of the grooved cross-section profile.

11. A battery swapping device according to claim 8, characterized in that, The low-position extension includes a vertical plate, the top of which is connected to the adapter, and the bottom of which forms the lifting connection position.

12. A battery swapping device according to claim 8, characterized in that, The battery swapping platform is connected to the bottom end of the low-position extension.

13. A battery swapping device according to claim 1, characterized in that, Each of the rod assemblies includes a rod, and the rods of two rod assemblies intersect each other and are rotatably connected at the intersection; Alternatively, each of the rod assemblies includes a plurality of rods that are rotatably connected in sequence, with the rods of two rod assemblies being arranged in a one-to-one correspondence, and the corresponding rods intersecting each other and being rotatably connected at the intersection.

14. A battery swapping device according to claim 1, characterized in that, The lifting drive unit is used to output linear motion to drive the linkage telescopic mechanism to extend and retract. The lifting drive unit includes a linear power output unit.

15. A battery swapping device according to claim 14, characterized in that, The linear power output unit includes a pneumatic cylinder and a hydraulic cylinder.

16. A battery swapping device according to claim 1, characterized in that, The battery swapping equipment includes a guiding device for assisting the battery swapping platform in lifting and lowering and guiding it during the lifting and lowering process. The guiding direction of the guiding device is consistent with the lifting and lowering direction of the battery swapping platform.

17. A battery swapping device according to claim 16, characterized in that, The guiding device includes a guide rail disposed on the side of the battery swapping equipment and a slider disposed on the corresponding surface of the battery swapping platform.

18. A battery swapping device according to claim 17, characterized in that, The lifting device is provided in multiple ways, and the multiple lifting devices are arranged on two opposite sides of the battery swapping platform. The guide rail is arranged on the two sides of the battery swapping equipment where the lifting device is not provided.

19. A battery swapping device according to claim 16, characterized in that, The battery swapping equipment also includes a battery swapping base, and the battery swapping platform is raised and lowered relative to the battery swapping base. The guiding device includes a first rod assembly and a second rod assembly. The first rod assembly and the second rod assembly each have a movable connecting end for movably connecting to one of the battery swapping platform and the battery swapping base, and a rotating connecting end for rotatably connecting to the other of the battery swapping platform and the battery swapping base. The first rod assembly and the second rod assembly are hinged to each other so that the guiding device extends and retracts along the raising and lowering direction of the battery swapping platform as the battery swapping platform is raised and lowered.

20. A battery swapping device according to claim 1, characterized in that, The battery swapping equipment also includes a battery swapping base, in which an upward-opening receiving area is formed. The battery swapping platform is raised and lowered in the receiving area. The dimension of the receiving area along the width direction of the vehicle to be swapped matches the width of the vehicle to be swapped. The lifting device is disposed on two opposite sides of the receiving area along the width direction of the vehicle to be swapped.

21. A battery swapping device according to claim 1, characterized in that, The battery swapping equipment also includes a battery swapping base. The battery swapping platform is provided with a vehicle body positioning part extending outward from the battery swapping base. The battery swapping base is provided with a recessed part, which is used to avoid the vehicle body positioning part, so that the vehicle body positioning part can extend out from the recessed part, thereby reducing the height of the battery swapping platform.

22. A battery swapping device according to claim 1, characterized in that, The battery swapping equipment also includes a battery swapping base, on which a traveling mechanism is provided for driving the battery swapping equipment to move.

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