Mobile charging station and chassis charging device

Abstract

The utility model provides a kind of mobile charging seat and chassis charging device, the mobile charging seat includes: mobile platform, for installing charging port;Scissor mechanism, mobile platform is installed on scissor mechanism;First bottom end is connected with first mobile seat, second bottom end is connected with second mobile seat;Guiding device, for guiding first mobile seat, second mobile seat linear reciprocating motion along first direction;Driving mechanism, first mobile seat and second mobile seat are connected in parallel, first mobile seat, second mobile seat are respectively provided with the driving force of linear reciprocating motion along first direction, to make the first bottom end and second bottom end of scissor mechanism pass through different motion combination, realize mobile platform translation and two degrees of freedom motion of lifting along first direction.The utility model can realize the multi-degree-of-freedom activity of mobile platform while reducing the height of chassis charging device body, can adapt to more chassis height not high vehicle type, and universality is better.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle charging technology, specifically to a mobile charging base and chassis charging device. Background Technology

[0002] Traditional vertical charging stations require additional ground space outside the parking space, resulting in low space utilization. Furthermore, most require users to manually align the charging gun with the charging port, which is time-consuming and laborious. Therefore, chassis charging devices have emerged that automatically charge vehicle chassis. Since these devices are mostly installed directly on the parking space, charging can begin when the vehicle is driven to the designated location, without occupying additional ground space outside the parking space, making them a promising solution.

[0003] However, existing chassis charging devices often employ multi-layered moving mechanisms and stacked guide rails to achieve horizontal and vertical movement. This results in an excessively tall chassis charging device, requiring deep excavation of parking spaces to accommodate it, leading to significant operating costs. Furthermore, if the chassis charging device is intended for installation in floor-level parking spaces, it struggles to accommodate vehicles with varying chassis heights, limiting its use to ground-level parking. Additionally, the need for guide rails at different levels of movement increases the number of parts and component costs, hindering market adoption. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a mobile charging base and a chassis charging device, which can reduce the height of the chassis charging device body while realizing multi-degree-of-freedom movement of the mobile platform. It can adapt to more models with low chassis height and can achieve multi-degree-of-freedom movement with only one set of guiding devices. It reduces the cost of the chassis charging mechanism, avoids deep excavation of parking spaces, and has better versatility.

[0005] The technical solution adopted in this utility model is as follows: A mobile charging dock includes: a mobile platform for mounting a charging port; a scissor mechanism on which the mobile platform is mounted, wherein a first bottom end of the scissor mechanism is connected to a first mobile seat, and a second bottom end of the scissor mechanism is connected to a second mobile seat; a guide device for guiding the first mobile seat and the second mobile seat to reciprocate linearly along a first direction, wherein the first direction is not parallel to the lifting direction of the mobile platform; and a drive mechanism for connecting the first mobile seat and the second mobile seat in parallel, providing a driving force for the first mobile seat and the second mobile seat to reciprocate linearly along the first direction, thereby driving the mobile platform to achieve two degrees of freedom of movement in the lifting direction and the first direction.

[0006] In addition, the mobile charging dock proposed according to this utility model may also have the following additional technical features: According to one embodiment of the present invention, the scissor mechanism includes: a platform hinge and a linear track mounted on the mobile platform, the linear track being parallel to the first direction, and a platform slider slidably connected thereto on the linear track; at least one first scissor arm, the top end of the first scissor arm being rotatably connected to the platform hinge, and the bottom end of the first scissor arm being the first bottom end; and at least one second scissor arm, which is connected to the first scissor arm pivot via a first scissor shaft, the top end of the second scissor arm being rotatably connected to the platform slider, and the bottom end of the second scissor arm being the second bottom end.

[0007] According to one embodiment of the present invention, the scissor mechanism is a multi-stage scissor mechanism, comprising: a platform hinge and a linear track mounted on the mobile platform, the linear track being parallel to the first direction, and a platform slider slidably connected thereto on the linear track; first to N scissor layers connected in sequence, each scissor layer comprising at least one third scissor arm, at least one fourth scissor arm, and a second scissor shaft, the third scissor arm and the fourth scissor arm being pivotally connected to the second scissor shaft, the third scissor arms of adjacent scissor layers being hinged to each other, and the fourth scissor arms of adjacent scissor layers being hinged to each other; the top end of the third scissor arm of the first scissor layer being rotatably connected to the platform hinge, the top end of the fourth scissor arm of the first scissor layer being rotatably connected to the platform slider, the bottom end of the third scissor arm of the Nth scissor layer being the first bottom end, and the bottom end of the fourth scissor arm of the Nth scissor layer being the second bottom end, wherein N is an integer greater than 1.

[0008] According to one embodiment of the present invention, a first movable seat hinge is installed on the first movable seat, and the first bottom end is rotatably connected to the first movable seat hinge; a second movable seat hinge is installed on the second movable seat, and the second bottom end is rotatably connected to the second movable seat hinge.

[0009] According to one embodiment of the present invention, the guiding device includes at least one linear guide rail or slide groove arranged parallel to the first direction, the first movable seat is adapted to move along the linear guide rail or the slide groove, and the second movable seat is adapted to move along the linear guide rail or the slide groove.

[0010] According to one embodiment of the present invention, the driving mechanism includes: a first lead screw extending along the first direction, wherein a first lead screw nut on the first lead screw is fixedly connected to the first movable seat; a first motor for driving the first lead screw to rotate, thereby moving the first movable seat; a second lead screw parallel to the first lead screw, wherein a second lead screw nut on the second lead screw is fixedly connected to the second movable seat; and a second motor for driving the second lead screw to rotate, thereby moving the second movable seat.

[0011] According to one embodiment of the present invention, the driving mechanism includes: a third lead screw extending along the first direction; a first lead screw motor threadedly connected to the third lead screw, one side of the first lead screw motor being fixedly connected to the first movable seat to drive the first movable seat to move; and a second lead screw motor threadedly connected to the third lead screw, one side of the second lead screw motor being fixedly connected to the second movable seat to drive the second movable seat to move.

[0012] According to one embodiment of the present invention, it further includes: a controller communicatively connected to the drive mechanism, the controller being used to control the direction and speed of the drive mechanism driving the first movable seat to move, and the direction and speed of the drive mechanism driving the second movable seat to move, so as to drive the mobile platform to achieve two degrees of freedom of movement in the lifting direction and the first direction.

[0013] According to one embodiment of the present invention, a charging base plate is also included, on which the guiding device is disposed.

[0014] In addition, to achieve the above objectives, this utility model also proposes a chassis charging device.

[0015] A chassis charging device includes a mobile charging base and a charging port as described above. The charging port is installed on the mobile platform and is electrically connected to a charging power source.

[0016] According to one embodiment of the present invention, it further includes: a raised seat, which includes two travel parts adapted for vehicle travel, and the mobile charging seat is adapted to be installed between the two travel parts.

[0017] According to one embodiment of the present invention, it further includes: a limiting block, which is detachably installed on the raised seat or on the ground, for limiting the vehicle tires that are close to the mobile charging seat.

[0018] The beneficial effects of this utility model are: This utility model's mobile charging base features two mobile seats at the bottom ends of a scissor lift mechanism, connected in parallel by a drive mechanism. This provides each mobile seat with a driving force for linear reciprocating motion along a first direction guided by a guide device. This allows the first and second mobile seats to drive the scissor lift structure through different motion combinations, achieving two degrees of freedom of movement: lifting and translation. This eliminates the need for multi-stage, stacked guide rails, reducing the height of the charging device and making it suitable for more vehicles with lower chassis heights, thus improving its versatility. Furthermore, the first and second mobile seats can share a single guide device, such as guide rails, achieving multi-degree-of-freedom movement with fewer parts, reducing device costs and enhancing market competitiveness.

[0019] The chassis charging device of this utility model, by further setting up a raised base, avoids the disadvantage of insufficient space under the vehicle chassis to accommodate the mobile charging base, which necessitates excavating parking spaces to accommodate the charging device, thus saving civil engineering costs. At the same time, it facilitates the promotion of the device to non-ground parking spaces, which is beneficial to market promotion. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a mobile charging dock according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the scissor structure according to an embodiment of the present invention; Figure 3 and Figure 4 This is a schematic diagram illustrating the cooperation of the scissor structure, the first movable seat, and the second movable seat according to an embodiment of the present invention. Figure 5 This is a schematic diagram of a scissor lift structure comprising multiple first scissor arms and second scissor arms, according to another embodiment of the present invention. Figure 6 This is a schematic diagram of the structure of a multi-stage scissor lift mechanism according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the scissor layer structure of the multi-stage scissor mechanism of this utility model; Figure 8 This is a schematic diagram of a drive mechanism according to an embodiment of the present invention; Figure 9 for Figure 8 A schematic diagram illustrating the control relationship between the first motor, the second motor, and the controller in the embodiment; Figure 10 This is a schematic diagram of the structure of a mobile charging dock according to another embodiment of the present invention; Figure 11 for Figure 10 A schematic diagram illustrating the control relationship between the first lead screw motor, the second lead screw motor, and the controller in the embodiment; Figure 12This is a schematic diagram of the structure of a chassis charging device according to an embodiment of the present invention; Figure 13 A schematic diagram of a vehicle driving to the chassis charging device.

[0021] Figure label: 1. Moving platform; 2. Scissor lift mechanism; 21. Platform hinge; 22. Linear track; 23. Platform slider; 24. First scissor lift arm; 25. Second scissor lift arm; 26. First scissor lift shaft; 27. Scissor lift layer; 27a. Third scissor lift arm; 27b. Fourth scissor lift arm; 27c. Second scissor lift shaft; 271. First-stage scissor lift layer; 27N. Nth-stage scissor lift layer; 3. First moving seat; 31. First moving seat hinge; 4. Second moving seat; 41. 5. Second moving seat hinge, 6. Guide device, 7. Guide rail, 8. Drive mechanism, 9. First lead screw, 10. First lead screw nut, 11. First motor, 12. Second lead screw, 13. Second lead screw nut, 14. Second motor, 15. Third lead screw, 16. First lead screw motor, 17. Second lead screw motor, 18. Controller, 19. Charging port, 10. Charging base plate, 11. Elevating seat, 12. Traveling part, 13. Transition part, 14. Limit block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1 As shown, the mobile charging dock of this utility model embodiment includes: a mobile platform 1, a scissor mechanism 2, a first mobile seat 3, a second mobile seat 4, a guide device 5, and a drive mechanism 6. The mobile platform 1 is used to mount the charging port 7. The mobile platform 1 is mounted on the top of the scissor mechanism 2. The first bottom end of the scissor mechanism 2 is connected to the first mobile seat 3, and the second bottom end is connected to the second mobile seat 4. The guide device 5 guides the first mobile seat 3 and the second mobile seat 4 to reciprocate linearly along a first direction. The first direction is not parallel to the lifting direction of the mobile platform 1. When the mobile platform 1 is parallel to the vehicle's driving plane, the first direction can be perpendicular to the lifting direction of the mobile platform 1. The drive mechanism 6 connects the first mobile seat 3 and the second mobile seat 4 in parallel, providing the first mobile seat 3 and the second mobile seat 4 with a driving force for reciprocating linearly along the first direction, thereby enabling the mobile platform 1 to achieve two degrees of freedom of movement in the lifting direction and the first direction.

[0024] According to the embodiment of this utility model, the mobile charging base is provided with mobile seats at the two bottom ends of the scissor mechanism 2, and a drive mechanism 6 is provided to connect the two mobile seats in parallel. The two mobile seats are provided with a driving force to reciprocate linearly in the first direction guided by the guide device 5, so that the first mobile seat 3 and the second mobile seat 4 can drive the scissor mechanism 2 to achieve the degrees of freedom of lifting and translating the mobile platform 1 through different motion combinations. Without the need for multi-level guide rails with stacked configuration, the mobile platform 1 can achieve multi-degree-of-freedom movement, reducing the height of the chassis charging device body and adapting to more vehicle models with low chassis height. Moreover, the first mobile seat 3 and the second mobile seat 4 can share a set of guide devices 5, thereby achieving multi-degree-of-freedom movement with fewer parts, reducing device costs and enhancing market competitiveness.

[0025] like Figures 2 to 4 As shown, in one embodiment of this utility model, the scissor mechanism 2 may include: a platform hinge 21, a linear track 22, a platform slider 23, a first scissor arm 24, a second scissor arm 25, and a first scissor shaft 26. The platform hinge 21 and the linear track 22 are mounted on the movable platform 1. The linear track 22 is parallel to a first direction, and the platform slider 23 is slidably connected to it. The top end of the first scissor arm 24 is rotatably connected to the platform hinge 21, and the bottom end of the first scissor arm 24 is a first bottom end connected to the first movable seat 3. The second scissor arm 25 is connected to the first scissor arm 24 via the first scissor shaft 26. The top end of the second scissor arm 25 is rotatably connected to the platform slider 23, and the platform slider 23 is slidably connected to the linear track 22. The bottom end of the second scissor arm 25 is a second bottom end connected to the second movable seat 4. The number of first scissor arms 24 and the number of second scissor arms 25 can be multiple. Multiple first scissor arms 24 and multiple second scissor arms 25 can share a single first scissor shaft 26 to improve the mechanism's rigidity and support force. Figure 5 As shown, this embodiment is not limited.

[0026] like Figure 6 As shown, in another embodiment of this utility model, the scissor mechanism 2 is a multi-stage scissor mechanism, which includes: a platform hinge 21, a linear track 22, a platform slider 23, and a first to N-stage scissor layer connected in sequence. The arrangement of the platform hinge 21, the linear track 22, and the platform slider 23 is similar to that described in the previous embodiment, and will not be repeated here.

[0027] like Figure 7As shown, each scissor lift layer 27 includes at least one third scissor arm 27a, at least one fourth scissor arm 27b, and a second scissor shaft 27c. The third scissor arms 27a and 27b are pivotally connected to the second scissor shaft 27c. The third scissor arms 27a of adjacent scissor lift layers 27 are hinged together, and the fourth scissor arms 27b of adjacent scissor lift layers 27 are hinged together. The top end of the third scissor arm 27a of the first scissor lift layer 271 is rotatably connected to the platform hinge 21, and the top end of the fourth scissor arm 27b of the first scissor lift layer 271 is rotatably connected to the platform slider 23. The bottom end of the third scissor arm 27a of the Nth scissor lift layer 27N is the first bottom end, and the bottom end of the fourth scissor arm 27b of the Nth scissor lift layer 27N is the second bottom end. Figure 6 As shown, N is an integer greater than 1, which increases the lifting range of the mechanism and can adapt to vehicles with high chassis such as off-road vehicles and mining trucks.

[0028] Preferably, a first movable seat hinge 31 is mounted on the first side of the first movable seat 3, and the first bottom end is rotatably connected to the first movable seat hinge 31; a second movable seat hinge 41 is mounted on the second side of the second movable seat 4 opposite to the first side, and the second bottom end is rotatably connected to the second movable seat hinge 41, so that the connection area between the scissor mechanism 2 and the first movable seat 3 and the second movable seat 4 does not occupy excessive vertical space, thereby reducing the minimum height of the mobile charging base. In some other embodiments of this utility model, the first movable seat hinge 31 can also be set on the upper side or other side of the first movable seat 3, and the second movable seat hinge 41 can be set on the upper side or other side of the second movable seat 4, depending on actual needs. This embodiment does not impose any limitations.

[0029] like Figure 1 and Figure 8 As shown, in one embodiment of the present invention, the guiding device 5 may include at least one linear guide rail 51 arranged parallel to the first direction, the first movable seat 3 is adapted to move along the linear guide rail 51, and the second movable seat 3 is adapted to move along the linear guide rail 51.

[0030] In some other embodiments of this utility model not shown, the guide device 5 may also include at least one slide groove arranged parallel to the first direction, and the first movable seat 3 and the second movable seat 4 may be respectively provided with sliders suitable for moving along the slide groove, etc., which are not limited in this embodiment.

[0031] like Figure 8As shown, in one embodiment of this utility model, the drive mechanism 6 may include: a first lead screw 61, a first lead screw nut 62, a first motor 63, a second lead screw 64, a second lead screw nut 65, and a second motor 66. The first lead screw 61 extends along a first direction, and the first lead screw nut 62 on the first lead screw 61 is fixedly connected to the first movable seat 3. The first motor 63 drives the first lead screw 61 to rotate, thereby moving the first movable seat 3. The second lead screw 64 is parallel to the first lead screw 61, and the second lead screw nut 65 on the second lead screw 64 is fixedly connected to the second movable seat 4. The second motor 66 drives the second lead screw 64 to rotate, thereby moving the second movable seat 4, thus providing a driving force for the first movable seat 3 and the second movable seat 4 to reciprocate linearly along the first direction.

[0032] like Figure 10 As shown, in another embodiment of this utility model, the drive mechanism 6 may include: a third lead screw 67, a first lead screw motor 68, and a second lead screw motor 69, wherein the third lead screw 67 extends along a first direction; the first lead screw motor 68 is threadedly connected to the third lead screw 67, and one side of the first lead screw motor 68 is fixedly connected to the first movable seat 3 to drive the first movable seat 3 to move; the second lead screw motor 69 is threadedly connected to the third lead screw 67, and one side of the second lead screw motor 69 is fixedly connected to the second movable seat 4 to drive the second movable seat 4 to move. In this embodiment, by simplifying the first lead screw 61 and the second lead screw 64 into a single third lead screw 67, simplifying the first motor 63 and the first lead screw nut 62 into a first lead screw motor 68 that can move directly on the third lead screw 67, and simplifying the second motor 66 and the second lead screw nut 65 into a second lead screw motor 69 that can move directly on the third lead screw 67, the drive mechanism 6 is further simplified, and the equipment cost is reduced.

[0033] Understandably, the drive mechanism 6 can also be replaced with other linear mechanisms, such as linear motors, electric cylinders, electric push rods, hydraulic rods, pneumatic cylinders, gear and rack transmissions, etc., to drive the first moving seat 3 and the second moving seat 4.

[0034] In one embodiment of this utility model, the mobile charging dock may further include a controller 60 communicatively connected to the drive mechanism 5. The controller 60 is used to control the direction and speed of the drive mechanism 5 driving the first mobile seat 3 and the direction and speed of the drive mechanism 5 driving the second mobile seat 4, so as to drive the mobile platform 1 to achieve two degrees of freedom of movement in the lifting direction and the first direction. The controller 60 may communicate with the drive mechanism 5 in a wired or wireless manner; this embodiment does not impose any limitation on this.

[0035] exist Figure 8 In the illustrated embodiment, the first motor 63 and the second motor 66 can be controlled separately by the controller 60, such as... Figure 9As shown, the controller 60 can control the moving direction and speed of the first moving seat 3 and the second moving seat 4 by controlling the rotation speed and direction of the first motor 63 and the second motor 66 respectively. The controller 60 may include two communicating single-motor controllers, or it may be a dual-motor controller, etc., and this embodiment is not limited thereto.

[0036] exist Figure 10 In the illustrated embodiment, the first lead screw motor 68 and the second lead screw motor 69 can be controlled separately by the controller 60, such as... Figure 11 As shown, the controller 60 can control the moving direction and speed of the first movable seat 3 and the second movable seat 4 by controlling the speed and direction of the first lead screw motor 68 and the second lead screw motor 69 respectively. The configuration of the controller 60 is similar to that described in the previous embodiment and will not be repeated here.

[0037] In one embodiment of the present invention, the mobile charging base further includes a charging base plate 8, and a guide device 5 is disposed on the charging base plate 8 to ensure the stability of the position of the guide device 5 and facilitate the overall movement and installation of the mobile charging base.

[0038] In addition, to achieve the above objectives, this utility model also proposes a chassis charging device.

[0039] like Figure 12 As shown, the chassis charging device of this utility model embodiment includes a mobile charging base and a charging port 7 as described above. The charging port 7 is installed on the mobile platform 1 and is electrically connected to the charging power supply. The charging port 7 can provide power transmission to the chassis charging module on the vehicle in a wired or wireless manner, and this embodiment does not limit this.

[0040] The chassis charging device of this utility model embodiment, since it includes the mobile charging base as described above, also has the above-mentioned beneficial effects, which will not be repeated here.

[0041] like Figure 12 and Figure 13 As shown, in one embodiment of the present invention, the chassis charging device may further include: a raised seat 9, which includes two driving parts 91 suitable for vehicle driving, and a mobile charging seat is suitable for installation between the two driving parts 91, so that after the vehicle drives to the raised seat 9, the height of the vehicle chassis is raised, so that the chassis charging device can be adapted to vehicles with low chassis.

[0042] Specifically, the two driving units 91 can be connected by a transition section 92 to fix the relative position of the two driving units 91. The transition section 92 may include an inclined surface extending from the ground onto the driving units 91 to facilitate the smooth driving of vehicles onto the driving units 91. In some other embodiments of this utility model, the driving units 91 can also be directly installed on the parking space, and this embodiment does not limit this.

[0043] In one embodiment of this utility model, the chassis charging device may further include a limiting block 93, which is detachably mounted on the raised platform 9 and used to limit the vehicle tires near the mobile charging station. In parking spaces where the raised platform 9 is not installed, the limiting block 93 can be directly installed on the parking space floor. In this case, the first direction can be parallel to the vehicle width direction. By adjusting the position of the limiting block 93, the user can limit the final driving position of the vehicle, so that the charging port 7 on the mobile platform 1 only needs one degree of translational freedom on the horizontal plane. This also matches the charging needs of different vehicle models, improving the universality of the chassis charging device while avoiding excavation of the ground parking space and reducing costs.

[0044] The limiting block 93 can be fixedly mounted on the raised platform, or its position can be adjusted by an actuator. The actuator can be controlled by a host computer to adjust the position of the limiting block 93, thus adapting to various vehicle models. The actuator can be, but is not limited to, electric, pneumatic, or hydraulic types.

[0045] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", "fixing" and other such terms should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components.

[0047] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

Claims

1. A portable charging dock, characterized in that, include: Mobile platform (1) for mounting charging port (7); Scissor mechanism (2), the mobile platform (1) is mounted on the scissor mechanism (2), the first bottom end of the scissor mechanism (2) is connected to the first moving seat (3), and the second bottom end of the scissor mechanism (2) is connected to the second moving seat (4); The guide device (5) is used to guide the first moving seat (3) and the second moving seat (4) to reciprocate in a straight line along a first direction, which is not parallel to the lifting direction of the moving platform (1). The drive mechanism (6) connects the first moving seat (3) and the second moving seat (4) in parallel, and provides the first moving seat (3) and the second moving seat (4) with a driving force for linear reciprocating motion along the first direction, so as to drive the moving platform (1) to achieve two degrees of freedom of motion in the lifting direction and the first direction.

2. The mobile charging station of claim 1, wherein, The scissor mechanism (2) includes: The platform hinge (21) and linear track (22) are installed on the mobile platform (1). The linear track (22) is parallel to the first direction and a platform slider (23) is provided on the linear track (22) and slidably connected thereto. At least one first scissor arm (24), the top end of the first scissor arm (24) is rotatably connected to the platform hinge (21), and the bottom end of the first scissor arm (24) is the first bottom end; At least one second scissor arm (25) is connected to the first scissor arm (24) via a first scissor shaft (26), the top end of the second scissor arm (25) is rotatably connected to the platform slider (23), and the bottom end of the second scissor arm (25) is the second bottom end.

3. The mobile charging station of claim 1, wherein, The scissor mechanism (2) is a multi-stage scissor mechanism, which includes: The platform hinge (21) and linear track (22) are installed on the mobile platform (1). The linear track (22) is parallel to the first direction and a platform slider (23) is provided on the linear track (22) and slidably connected thereto. The first to N scissor lift layers are connected in sequence. Each scissor lift layer (27) includes at least one third scissor lift arm (27a), at least one fourth scissor lift arm (27b), and a second scissor lift shaft (27c). The third scissor lift arm (27a) and the fourth scissor lift arm (27b) are pivotally connected to the second scissor lift shaft (27c). The third scissor lift arms (27a) of adjacent scissor lift layers (27) are hinged to each other, and the fourth scissor lift arms (27b) of adjacent scissor lift layers (27) are hinged to each other. The top end of the third scissor arm (27a) of the first-level scissor layer (271) is rotatably connected to the platform hinge (21), the top end of the fourth scissor arm (27b) of the first-level scissor layer (271) is rotatably connected to the platform slider (23), the bottom end of the third scissor arm (27a) of the Nth-level scissor layer (27N) is the first bottom end, and the bottom end of the fourth scissor arm (27b) of the Nth-level scissor layer (27N) is the second bottom end, where N is an integer greater than 1.

4. The mobile charging station of claim 2 or 3, wherein, The first movable seat (3) is equipped with a first movable seat hinge (31), and the first bottom end is rotatably connected to the first movable seat hinge (31); the second movable seat (4) is equipped with a second movable seat hinge (41), and the second bottom end is rotatably connected to the second movable seat hinge (41).

5. The mobile charging station of claim 1, wherein, The guiding device (5) includes at least one linear guide rail (51) or groove arranged parallel to the first direction.

6. The mobile charging station of claim 1, wherein, The drive mechanism (6) includes: A first lead screw (61) extending along the first direction, and a first lead screw nut (62) on the first lead screw (61) being fixedly connected to the first movable seat (3); The first motor (63) is used to drive the first lead screw (61) to rotate, thereby moving the first movable seat (3). The second lead screw (64) is parallel to the first lead screw (61), and the second lead screw nut (65) on the second lead screw (64) is fixedly connected to the second movable seat (4); The second motor (66) is used to drive the second lead screw (64) to rotate, thereby moving the second movable seat (4).

7. The mobile charging station of claim 1, wherein, The drive mechanism (6) includes: A third lead screw (67) extending along the first direction; The first lead screw motor (68) is threadedly connected to the third lead screw (67), and one side of the first lead screw motor (68) is fixedly connected to the first movable seat (3) to drive the first movable seat (3) to move. The second lead screw motor (69) is threadedly connected to the third lead screw (67), and one side of the second lead screw motor (69) is fixedly connected to the second movable seat (4) to drive the second movable seat (4) to move.

8. The mobile charging dock of claim 1, wherein, Also includes: A controller (60) is communicatively connected to the drive mechanism (6). The controller (60) is used to control the direction and speed of the drive mechanism (6) driving the first moving seat (3) to move, and the direction and speed of the drive mechanism (6) driving the second moving seat (4) to move, so as to drive the moving platform (1) to achieve two degrees of freedom of movement in the lifting direction and the first direction.

9. A bottom charging device, characterized in that include: The mobile charging dock and charging port (7) as described in any one of claims 1-8 above, wherein the charging port (7) is mounted on the mobile platform (1) and the charging port (7) is electrically connected to the charging power supply.

10. The under-chassis charging device of claim 9, wherein, Also includes: The raised seat (9) includes two travel sections (91) adapted for vehicle travel, with the mobile charging seat adapted to be mounted between the two travel sections (91).

11. The under-chassis charging device of claim 10, wherein, Also includes: A limiting block (93) is detachably mounted on the raised seat (9) or on the ground to limit the vehicle tires that are close to the mobile charging seat.

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