WO2023186042A1 - Wheel positioning apparatus, battery swapping platform, and battery swapping system - Google Patents

Abstract

The present application relates to the technical field of battery swapping, and provides a wheel positioning apparatus, a battery swapping platform, and a battery swapping system. The wheel positioning apparatus comprises a base, a first position-limiting mechanism, and a second position-limiting mechanism; the base is provided with a positioning region used for placing a wheel; the first position-limiting mechanism and the second position-limiting mechanism are both obliquely arranged in the positioning region; the first position-limiting mechanism and the second position-limiting mechanism are used to cooperatively position the wheel in the positioning region; a first surface of the first position-limiting mechanism used for touching the wheel is provided with a first concave-convex structure, and the first concave-convex structure is used to increase a frictional force between the first surface and the wheel when the wheel crosses over the first position-limiting mechanism. Once battery swapping of the vehicle is completed, the vehicle needs to cross over the first position-limiting mechanism to leave the positioning region. The first concave-convex structure can increase the frictional force between the first surface and the wheel when the wheel crosses over the first position-limiting mechanism so as to prevent slipping between the wheel and the first position-limiting mechanism, so that the wheel can leave the positioning region smoothly, thereby increasing the battery swapping efficiency.

Description

Wheel alignment device, battery exchange platform and battery exchange system

Cross-references to related applications

This application claims priority to the Chinese patent application (202220774109.0) titled "Wheel Alignment Device, Power Exchange Platform and Power Exchange System" submitted on April 2, 2022. The entire content of this application is incorporated herein by reference.

Technical field

The present application relates to the technical field of battery swapping, specifically, to a wheel positioning device, a battery swapping platform and a battery swapping system.

Background technique

With the development of new energy technology, vehicles are gradually being powered by batteries. When the vehicle's power is exhausted, it is often replenished by connecting a charging device. At the same time, there is also a way to quickly replenish electric energy by replacing the battery. Usually, the vehicle needs to be moved to a dedicated device (i.e., a battery replacement platform) to replace the battery.

After the battery replacement of the vehicle is completed, the structure of the existing power swap platform is not conducive to the vehicle leaving the power swap platform, affecting the battery swap efficiency.

Contents of the invention

Embodiments of the present application provide a wheel positioning device, a power exchange platform and a power exchange system to improve power exchange efficiency.

In a first aspect, embodiments of the present application provide a wheel positioning device, including a base, a first limiting mechanism and a second limiting mechanism; the base has a positioning area for parking wheels; the first limiting mechanism The mechanism is inclined and arranged in the positioning area; the second limiting mechanism is inclined and arranged in the positioning area, and the first and second limiting mechanisms are used to coordinately position the wheel in the positioning area. area; wherein, the first surface of the first limiting mechanism used to contact the wheel is provided with a first concave and convex structure, and the first concave and convex structure is used to increase the first surface when the wheel passes over the The friction force between the first limiting mechanism and the wheel.

In the above technical solution, by arranging the first concave-convex structure on the first surface of the first limiting mechanism for contact with the wheel, the vehicle needs to cross the first limiting mechanism to leave the positioning area after completing the power exchange. The first concave-convex structure can increase the The friction between the large first surface and the wheel when the wheel crosses the first limiting mechanism prevents the wheel from slipping with the first limiting mechanism, facilitates the wheel to smoothly leave the positioning area, and improves the efficiency of battery exchange.

In some embodiments of the first aspect of the present application, the positioning area has a first direction and a second direction that are perpendicular to each other, and the first limiting mechanism and the second limiting mechanism are arranged along the first direction. cloth, the second direction is consistent with the axial direction of the wheel; wherein the first limiting mechanism includes a plurality of first rollers arranged along the second direction, at least part of the surface of the first roller The first concave and convex structure is provided.

In the above technical solution, a plurality of first rollers are arranged along the second direction, and the second direction is consistent with the axial direction of the wheel. Then the rotation axis of the wheel and the rotation axis of the first roller are arranged at an angle. When the wheel needs to leave the positioning area When the wheel rotates relative to the first roller, since the rotation axis of the wheel is at an angle with the rotation axis of the first roller, the wheel will not drive the first roller to rotate when the wheel rotates, so that the wheel will not drive the first roller to rotate, causing the wheel to slip. , so that the wheels can leave the positioning area smoothly.

In some embodiments of the first aspect of the application, along the second direction, at least one of the first rollers located in the middle area of the first limiting mechanism is provided with the first concave-convex structure.

In the above technical solution, generally when the wheel is located in the middle area of the positioning area, it can be more accurately positioned with the battery. At least one first roller located in the middle area of the first limiting mechanism is provided with a first concave and convex structure, so that the vehicle can be positioned in the middle. After the regional power exchange is completed, there is no need to adjust the position of the wheels to smoothly leave the positioning area.

In some embodiments of the first aspect of the present application, an angle between the extending direction of the first concave-convex structure and the traveling direction of the wheel is less than or equal to 90°.

In the above technical solution, the angle between the extension direction of the first concave-convex structure and the traveling direction of the wheel is less than or equal to 90°, then the friction force at the contact position between the first limiting mechanism and the wheel has a component along the tangential direction of the wheel, so that The wheel is not easy to slip when crossing the first limiting mechanism.

In some embodiments of the first aspect of the present application, the second surface of the second limiting mechanism for contacting the wheel is provided with a second concave-convex structure, and the second concave-convex structure is used to increase the size of the second surface of the second limiting mechanism. The friction between the two surfaces and the wheel when the wheel crosses the second limiting mechanism.

In the above technical solution, by arranging a second concave-convex structure on the second surface of the second limiting mechanism for contact with the wheel, the vehicle needs to cross the second limiting mechanism to leave the positioning area after completing the power exchange. The second concave-convex structure can increase the The friction between the large second surface and the wheel when the wheel crosses the second limiting mechanism prevents the wheel and the second limiting mechanism from slipping, facilitates the wheel to smoothly leave the positioning area, and improves the efficiency of battery exchange.

In some embodiments of the first aspect of the application, the second limiting mechanism includes a plurality of second rollers arranged along the second direction, and at least part of the surface of the second roller is provided with the second Concave-convex structure.

In the above technical solution, a plurality of second rollers are arranged along the second direction, and the second direction is consistent with the axial direction of the wheel. Then the rotation axis of the wheel and the rotation axis of the second roller are arranged at an angle. When the wheel needs to leave the positioning area When the wheel rotates relative to the second roller, since the rotation axis of the wheel and the rotation axis of the second roller are arranged at an angle, the second roller will not be driven to rotate when the wheel rotates, so that the wheel will not cause the wheel to rotate due to driving the second roller. Slip so that the wheels can leave the positioning area smoothly.

In some embodiments of the first aspect of the present application, an angle between the extending direction of the second concave-convex structure and the traveling direction of the wheel is less than or equal to 90°.

In the above technical solution, the angle between the extending direction of the second concave-convex structure and the traveling direction of the wheel is less than or equal to 90°, and the friction force at the contact position between the second limiting mechanism and the wheel has a component along the tangential direction of the wheel, so that the wheel It is not easy to slip when crossing the second limiting mechanism.

In some embodiments of the first aspect of the present application, a receiving portion is provided on the top of the base, the receiving portion defines the positioning area, and both the first limiting mechanism and the second limiting mechanism provided in the accommodating portion.

In the above technical solution, the first limiting mechanism and the second limiting mechanism are both arranged in the receiving part. When the wheel enters the receiving part and comes into contact with the first limiting mechanism and the second limiting mechanism, there will be a relatively obvious vibration. Able to provide signals for timely parking. The first limiting mechanism and the second limiting mechanism are both arranged in the receiving portion, which can reduce the volume of the wheel positioning device.

In some embodiments of the first aspect of the present application, the wheel positioning device further includes a first driving mechanism, the first driving mechanism is used to drive the wheel in the axial direction of the wheel to adjust the position of the wheel at the desired position. The location of the positioning area.

In the above technical solution, the first driving mechanism can drive the wheel along the axis of the wheel to adjust the position of the wheel in the positioning area, so that the vehicle can be accurately positioned with the battery and the battery can be replaced smoothly.

In a second aspect, embodiments of the present application provide a power exchange platform, which includes a parking platform and a wheel positioning device provided in any embodiment of the first aspect. The parking platform is used to park a vehicle; the wheel positioning device is installed on the Parking platform.

In the above technical solution, the vehicle is parked on the parking platform. Since the first limiting mechanism is used to provide a first concave and convex structure on the first surface in contact with the wheel, the first concave and convex structure can increase the first surface when the wheel crosses the first limiting position. The friction between the mechanism and the wheels prevents the wheels and the first limiting mechanism from slipping when the vehicle completes the power exchange and leaves the positioning area, facilitates the wheels to smoothly leave the positioning area, and improves the efficiency of power exchange.

In some embodiments of the second aspect of the present application, the power exchange platform includes two wheel positioning devices, and the two wheel positioning devices are arranged at intervals on the parking platform. The positioning of the two wheel positioning devices is Areas are used to park the two front wheels of the vehicle.

In the above technical solution, the positioning areas of the two wheel positioning devices are respectively used to park the two front wheels of the vehicle, which can respectively limit the positions of the two front wheels of the vehicle and improve the stability of parking.

In some embodiments of the second aspect of the present application, the first surface is used to contact the front side of the front wheel, and the first concave-convex structure is used to increase the distance between the first surface and the front wheel rim. The friction force with the front wheel when the traveling direction crosses the first limiting mechanism.

In the above technical solution, the first concave and convex structure is used to increase the friction between the first surface and the front wheel when the front wheel crosses the first limiting mechanism in the direction of travel, to prevent the front wheel and the first limiting mechanism from slipping, and to facilitate the smooth movement of the wheel. Leave the positioning area to improve battery replacement efficiency. this In addition, when the vehicle stops in the positioning area, the first concave-convex structure also has a certain stopping effect on the vehicle.

In a third aspect, embodiments of the present application further provide a power swapping system, including a track, a power swapping platform provided in any embodiment of the second aspect, a battery pick-and-place device and a power swapping trolley, where the power swapping platform is disposed on the One end of the track; the battery pick-and-place device is located at the other end of the track; the battery swap trolley is movably disposed on the track to transport batteries between the battery swap platform and the battery pick-and-place device .

In the above technical solution, the power exchange system is equipped with the power exchange platform provided by the embodiment of the second aspect. When the vehicle completes the power exchange and leaves the positioning area of the power exchange platform, the wheels and the first limiting mechanism are not easy to slip, which facilitates the wheels to smoothly leave the positioning area. , improve the power exchange efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application and therefore do not It should be regarded as a limitation of the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of a power swap system provided by some embodiments of the present application;

Figure 2 is a top view of a partial structure of the power swap system provided by some embodiments of the present application;

Figure 3 is an isometric view of a partial structure of the power exchange platform provided by some embodiments of the present application;

Figure 4 is another isometric view of the partial structure of the power exchange platform provided by some embodiments of the present application;

Figure 5 is an isometric view of a wheel alignment device provided by some embodiments of the present application;

Figure 6 is a top view of a wheel alignment device provided by some embodiments of the present application;

Figure 7 is a cross-sectional view of A-A in Figure 6;

Figure 8 is a cross-sectional view of B-B in Figure 6;

Figure 9 is an enlarged view of position I in Figure 3.

Icon: 1000-power exchange system; 100-power exchange platform; 10-parking platform; 11-first section; 12-second section; 13-third section; 20-wheel alignment device; 21-base; 211- Positioning area; 212-accommodating portion; 22-first limiting mechanism; 221-first roller; 23-second limiting mechanism; 231-second roller; 24-first driving mechanism; 30-vehicle lifting mechanism; 200 -Battery pick-and-place device; 210-fork; 300-track; 400-rear wheel positioning device; 410-third roller; 2000-battery; X-first direction; Y-second direction.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments These are part of the embodiments of this application, but not all of them. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the application provided in the appended drawings is not intended to limit the scope of the claimed application, but rather to represent selected embodiments of the application. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

It should be noted that, as long as there is no conflict, the embodiments and features in the embodiments of this application can be combined with each other.

It should be noted that similar reference numerals and letters represent similar items in the following figures, therefore, once an item is defined in one figure, it does not need further definition and explanation in subsequent figures.

In the description of the embodiments of the present application, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is commonly placed when used, or the orientation or positional relationship of this application. The orientation or positional relationship commonly understood by those skilled in the art is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", "third", etc. are only used to distinguish descriptions and shall not be understood as indicating or implying relative importance.

With the development of new energy technology, more and more devices use batteries. When the electrical equipment runs out of power, it is often connected to the charging equipment. For example, electric vehicles can be connected to charging piles to recharge. Compared with the method of connecting charging equipment such as charging piles to replenish electric energy, replacing the battery can replenish electric energy faster. Currently, there is also a battery swapping system specifically used to replace batteries. The battery swapping system is equipped with a battery pick-and-place device and a battery swapping device for parked vehicles. The platform and the movable battery swap trolley are used to replace the battery of the vehicle parked on the battery swap device.

The current power exchange platform includes a parking platform and a wheel positioning device. The wheel positioning device is installed on the parking platform. The wheel positioning device is used to position the wheels of the vehicle, specifically the front wheels of the vehicle. When the vehicle drives onto the parking platform in the direction of travel and the front wheels are positioned by the wheel alignment device, the battery replacement trolley can replace the battery of the vehicle.

The inventor found that after the battery swap car completes the battery swap on the vehicle, it needs to leave the battery swap platform. Since the friction between the front wheel of the vehicle and the wheel positioning device is small, no matter whether the vehicle leaves the parking platform along the direction of travel or along the When leaving the parking platform in the opposite direction to the direction of travel, the front wheels are prone to slipping, which makes the vehicle take a longer time to leave the parking platform, reducing the efficiency of battery exchange.

Based on the above considerations, in order to alleviate the problem of wheels easily slipping when the vehicle leaves the battery exchange platform, the inventor designed a wheel positioning device after in-depth research. The wheel positioning device includes a base, a first limiting mechanism and a second limiting mechanism. ; The base has a positioning area for parking wheels; the first limiting mechanism and the second limiting mechanism are inclined and arranged in the positioning area; the second limiting mechanism is inclined and arranged in the positioning area, and the first and second limiting mechanisms The mechanism is used to cooperate with the positioning wheel in the positioning area. The first limiting mechanism is used to provide a first concave and convex structure on the first surface in contact with the wheel. The first concave and convex structure is used to increase the first surface when the wheel crosses the first limit. The friction between the mechanism and the wheels.

By arranging the first concave-convex structure on the first surface of the first limiting mechanism for contact with the wheel, the vehicle needs to cross the first limiting mechanism to leave the positioning area after completing the battery replacement. The first concave-convex structure can increase the area of the first surface. The friction between the wheel and the wheel when it crosses the first limiting mechanism prevents the wheel from slipping with the first limiting mechanism, facilitates the wheel to smoothly leave the positioning area, and improves the efficiency of battery exchange.

As shown in Figure 1, an embodiment of the present application provides a power swap system 1000. The power swap system 1000 includes a power swap platform 100, a battery pick-and-place device 200, and a battery swap cart (not shown in the figure); the battery swap cart is movable. The ground is disposed between the battery replacement platform 100 and the battery access device 200 .

The battery pick-and-place device 200 is used to store batteries 2000. The battery swap trolley is used to transfer the battery 2000 between the battery swap platform 100 and the battery pick-and-place device 200 . The battery swapping trolley can remove the battery 2000 from the vehicle parked on the battery swapping platform 100 and transport it to the battery picking and placing device 200. The battery swapping trolley can also transport the battery 2000 of the battery picking and placing device 200 to the battery swapping device. The platform 100 locks and parks the battery 2000 on the vehicle on the battery replacement platform 100, thereby completing the replacement of the vehicle battery 2000.

The battery pick-and-place device 200 can be a stacker. The battery pick-and-place device 200 is provided with a fork 210 (the fork 210 can also be replaced by a mechanical arm). The fork 210 is used to take away the battery 2000 to be charged on the battery replacement trolley and place it. Put it into a battery charging device (not shown in the figure) for recycling, and take out the fully charged battery 2000 from the battery charging device and place it on the battery replacement trolley.

In some embodiments, the power swap system 1000 further includes a track 300 on which a power swap trolley is movably disposed. The battery exchange platform 100 is disposed at one end of the track 300; the battery pick-and-place device 200 is located at the other end of the track 300; and the battery exchange car is movably disposed on the track 300. The battery swapping trolley can remove the battery 2000 from the vehicle parked on the battery swapping platform 100 along the track 300 and transport it to the battery picking and placing device 200. The battery swapping trolley can also remove the battery 2000 from the battery picking and placing device 200. The battery 2000 is transported to the battery exchange platform 100 along the track 300 and the battery 2000 is locked and parked on the vehicle on the battery exchange platform 100 .

The battery swapping trolley moves back and forth on the track 300 so that the battery swapping trolley moves between the vehicle and the battery picking and placing device 200. The battery swapping trolley disassembles the battery 2000 to be charged on the vehicle and transports it to the battery picking and placing device 200 along the track 300. And install the fully charged battery 2000 updated through the battery pick-and-place device 200 into the vehicle. In this embodiment, the extension direction of the track 300 is perpendicular to the traveling direction of the vehicle on the parking platform 10 .

As shown in FIGS. 2 to 4 , in some embodiments, the power exchange platform 100 includes a parking platform 10 and a wheel positioning device 20 . The wheel positioning device 20 is installed on the parking platform 10 .

The wheel positioning device 20 is used to position the wheels of the vehicle. The wheel positioning device 20 can be used to position the front wheels or the rear wheels. Each wheel of the vehicle can be positioned by one wheel positioning device 20 , or multiple wheels can be positioned by the same wheel positioning device 20 .

As shown in FIGS. 2 to 4 , the parking platform 10 includes a first section 11 , a second section 12 and a third section 13 arranged sequentially along the direction of travel. The wheel positioning device 20 is installed on the second section 12 . The vehicle travels from the first section 11 to the second section 12, and stops at the second section 12 The wheel is positioned by the wheel positioning device 20 . After the vehicle stops and stabilizes in the second section 12, the battery replacement car replaces the vehicle's battery 2000. After the battery swap is completed, the vehicle travels from the second section 12 to the third section 13, thereby leaving the battery swap platform.

In some embodiments, the power swap system 1000 further includes a vehicle lifting mechanism 30 , which is disposed on opposite sides of the parking platform 10 . The vehicle lifting mechanism 30 is used to lift the vehicle so that it can be parked in the second section 12 The height of the vehicle makes it convenient for the battery replacement trolley to replace the battery 2000 for the vehicle.

In some embodiments, the power exchange platform 100 includes two wheel alignment devices 20 , which are spaced apart on the parking platform 10 . The positioning areas 211 of the two wheel alignment devices 20 are respectively used to park the two front wheels of the vehicle. wheel.

As shown in Figures 5-8, in some embodiments, the wheel positioning device 20 includes a base 21, a first limiting mechanism 22 and a second limiting mechanism 23; the base 21 has a positioning area 211 for parking wheels. ; The first limiting mechanism 22 is inclined and arranged in the positioning area 211; the second limiting mechanism 23 is inclined and arranged in the positioning area 211, and the first and second limiting mechanisms 22 and 23 are used to cooperate with the positioning wheel in the positioning area 211; Wherein, the first surface of the first limiting mechanism 22 used to contact the wheel is provided with a first concave and convex structure (not shown in the figure), and the first concave and convex structure is used to increase the first surface when the wheel crosses the first limiting mechanism. 22 o'clock friction with the wheel.

The first limiting mechanism 22 and the second limiting mechanism 23 are both inclined and arranged in the positioning area 211. The first limiting mechanism 22 and the second limiting mechanism 23 are arranged in an inverted "eight" shape (shown in Figure 7). A positioning space is defined, and the wheel can be clamped in the positioning space, thereby positioning the wheel in the positioning area 211 . In addition, when the wheel enters the positioning space and contacts the first limiting mechanism 22 and the second limiting mechanism 23, there will be a relatively obvious vibration, which can provide a signal for timely parking.

When the wheel is positioned in the positioning area 211, the opposite sides of the wheel along the traveling direction are in contact with the surface of the first limiting mechanism 22 and the surface of the second limiting mechanism 23 respectively. Wherein, the surface of the first limiting mechanism 22 that contacts the wheel is a first surface, and the first surface is disposed facing the second limiting mechanism 23 .

The first uneven structure refers to a structure that can increase the surface roughness of the first surface. The first concave-convex structure may be independent cubic bumps, cuboid bumps, staggered bumps, etc. provided on the first surface.

The first limiting mechanism 22 can contact the front side of the wheel, then the second limiting mechanism 23 contacts the rear side of the wheel; or the second limiting mechanism 23 can contact the front side of the wheel, then the first limiting mechanism 22 Contact with the rear side of the wheel. Illustratively, the first surface of the first limiting mechanism 22 is used to contact the front side of the front wheel. Since the first limiting mechanism 22 and the second limiting mechanism 23 are both inclined and arranged in an inverted "eight" shape, when the vehicle power exchange is completed and the vehicle wants to leave the parking platform 10, the wheels need to cross the first limit along the driving direction. positioning mechanism 22, therefore, it is required that there is no slippage between the first surface of the first limiting mechanism 22 and the front side of the front wheel, so a first concave-convex structure is provided on the first surface, and the first concave-convex structure is used to increase the The friction between one surface and the front wheel when the front wheel passes over the first limiting mechanism 22 prevents the wheel and the first limiting mechanism 22 from slipping.

In other embodiments, the vehicle can also leave the parking platform 10 in the direction opposite to the direction of travel, then the first surface of the first limiting mechanism 22 can be configured to contact the rear side of the wheel, and the first concave-convex structure is used to increase the The friction between the large first surface and the wheel when the wheel crosses the first limiting mechanism 22 in the direction opposite to the traveling direction prevents the wheel and the first limiting mechanism 22 from slipping.

Therefore, by arranging the first concave-convex structure on the first surface of the first limiting mechanism 22 for contact with the wheel, the vehicle needs to cross the first limiting mechanism 22 to leave the positioning area 211 after completing the power exchange. The first concave-convex structure can increase the The friction between the large first surface and the wheel when the wheel crosses the first limiting mechanism 22 prevents the wheel from slipping with the first limiting mechanism 22, facilitates the wheel to smoothly leave the positioning area 211, and improves the efficiency of battery exchange.

Please continue to refer to Figures 5-8. In some embodiments, the positioning area 211 has a first direction X and a second direction Y that are perpendicular to each other, and the first limiting mechanism 22 and the second limiting mechanism 23 are along the first direction X. arranged, the second direction Y is consistent with the axial direction of the wheel; wherein, the first limiting mechanism 22 includes a plurality of first rollers 221 arranged along the second direction Y, and at least part of the surface of the first rollers 221 is provided with a first roller 221 . Concave-convex structure.

In this embodiment, the first direction X is consistent with the traveling direction of the vehicle. The first limiting mechanism 22 and the second limiting mechanism 23 are arranged along the first direction X to form an inverted "eight" positioning space. When the wheel is located on the parking platform 10 or the wheel is located in the positioning space, the axis of the wheel is consistent with the second direction Y.

Multiple means two or more. The first roller 221 is rotatably installed in the positioning area 211 . The plurality of first rollers 221 are arranged along the second direction Y. The extending direction of the rotation axis of the first rollers 221 may be perpendicular to the second direction Y, or may be arranged at an acute angle to the second direction Y. The first concave-convex structure is provided on the outer peripheral surface of the first roller 221 . The plurality of first rollers 221 may be part of the first rollers 221 The outer peripheral surface is provided with the first concave and convex structure. The plurality of first rollers 221 may also be provided with the first concave and convex structure on the outer peripheral surface of all the first rollers 221 . The first surface includes a portion of the outer peripheral surface of each first roller 221 .

In other embodiments, the first limiting mechanism 22 may also be a first flat plate structure arranged obliquely on the base 21 , and the first flat plate structure has a first surface for contacting the wheel.

The plurality of first rollers 221 are arranged along the second direction Y. The second direction Y is consistent with the axial direction of the wheel. The rotation axis of the wheel and the rotation axis of the first roller 221 are arranged at an angle. When the wheel needs to leave the positioning area 211 When the wheel rotates relative to the first roller 221, since the rotation axis of the wheel forms an angle with the rotation axis of the first roller 221, the first roller 221 will not be driven to rotate when the wheel rotates, so that the wheel will not drive the first roller 221. The rotation causes the wheels to slip, so that the wheels can leave the positioning area 211 smoothly.

Generally, when the wheel is located in the middle area of the positioning area 211, it can be more accurately positioned with the battery 2000, and accurate battery replacement can be achieved. Therefore, in some embodiments, along the second direction Y, at least one first roller 221 located in the middle area of the first limiting mechanism 22 is provided with a first concave-convex structure.

The middle area of the first limiting mechanism 22 corresponds to the middle area of the positioning area 211 .

For example, the first limiting mechanism 22 includes five first rollers 221 , and the five first rollers 221 are sequentially arranged along the second direction Y. The five first rollers 221 are defined as the first sub-roller, the second sub-roller, the third sub-roller, the fourth sub-roller and the fifth sub-roller along their arrangement direction. The third sub-roller is located at the five first rollers 221 In the middle area, at least the outer peripheral surface of the third sub-roller is provided with a first concave-convex structure.

For another example, the first limiting mechanism 22 includes four first rollers 221 , and the four first rollers 221 are sequentially arranged along the second direction Y. The four first rollers 221 are defined as the first sub-roller, the second sub-roller, the third sub-roller and the fourth sub-roller respectively along their arrangement direction. The second sub-roller and the third sub-roller are located at the four first rollers 221 In the middle area, at least the outer peripheral surfaces of the second sub-roller and the third sub-roller are provided with a first concave-convex structure.

When the vehicle is exchanging electricity, the wheels of the vehicle are in contact with the first roller 221 located in the middle area. In the first limiting mechanism 22, at least one first roller 221 located in the middle area is provided with a first concave-convex structure. When the vehicle is exchanging electricity, the vehicle's wheels are in contact with each other. When the wheel contacts the first concave-convex structure of the first roller 221 located in the middle area, the vehicle can smoothly leave the positioning area 211 without having to adjust the position of the wheel after completing the power exchange in the middle area.

In some embodiments, the angle between the extending direction of the first concave-convex structure and the traveling direction of the wheel is less than or equal to 90°.

The angle between the extending direction of the first concave-convex structure and the traveling direction of the wheel is less than or equal to 90°, which means that along the up and down direction, the projection of the extending direction of the first concave-convex structure on the base 21 and the traveling direction of the wheel on the base 21 The angle of the projection on is less than or equal to 90°. The up and down directions, the first direction X and the second direction Y are perpendicular to each other.

If the angle between the extending direction of the first concave-convex structure and the traveling direction of the wheel is less than 90°, then the extending direction of the first concave-convex structure and the traveling direction of the wheel are arranged at an acute angle. If the angle between the extending direction of the first concave-convex structure and the traveling direction of the wheel is equal to 90°, the extending direction of the first concave-convex structure is arranged perpendicularly to the traveling direction of the wheel. When the wheel passes over the first limiting mechanism 22 , the friction force at the contact position between the first limiting mechanism 22 and the wheel has a component force along the tangential direction of the wheel, so that the wheel can pass over the first limiting mechanism 22 .

Therefore, the angle between the extending direction of the first concave-convex structure and the traveling direction of the wheel is less than or equal to 90°, and the component of the frictional force at the contact position between the first limiting mechanism 22 and the wheel along the tangential direction of the wheel causes the wheel to pass over the first The limiting mechanism 22 is not easy to slip during operation.

In some embodiments, the second surface of the second limiting mechanism 23 for contacting the wheel is provided with a second concave-convex structure (not shown in the figure), and the second concave-convex structure is used to increase the second surface when the wheel passes over the second surface. The friction between the second limiting mechanism 23 and the wheel.

When the wheel is positioned in the positioning area 211 , the surface of the second limiting mechanism 23 that contacts the wheel is the second surface, and the second surface is disposed facing the first limiting mechanism 22 .

The second uneven structure refers to a structure that can increase the surface roughness of the second surface. The structural form of the second concave-convex structure may refer to the first concave-convex structure. For example, the second concave-convex structure may be independent square bumps, cuboid bumps, staggered bumps, etc. provided on the second surface.

In the embodiment where the first limiting mechanism 22 is in contact with the front side of the wheel, the second limiting mechanism 23 is in contact with the rear side of the wheel. For example, the first surface of the first limiting mechanism 22 is used to contact the front side of the front wheel, and the second surface of the second limiting mechanism 23 is used to contact the rear side of the front wheel. Since the first limiting mechanism 22 and the second limiting mechanism 23 are both arranged obliquely and in an inverted "eight" shape, when the vehicle's power exchange is completed and the vehicle wants to leave the parking platform 10, along the driving direction, the front wheels need to pass over the first limiting mechanism 22 and the second limiting mechanism 23. The friction force generated by the second concave-convex structure between the limiting mechanism 22, the second limiting mechanism 23 and the rear side of the front wheel can push the front wheel to move along the traveling direction to help the front wheel cross the first limiting mechanism along the traveling direction. twenty two.

Since the second surface of the second limiting mechanism 23 is provided with the second concave-convex structure, the vehicle can leave the positioning area 211 in a direction away from the first limiting mechanism 22 . For example, the first limiting mechanism 22 and the second limiting mechanism 23 jointly position the front wheel of the vehicle in the positioning area 211. The first surface of the first limiting mechanism 22 contacts the front side of the front wheel, and the vehicle can move along the direction of travel. Cross the first limiting mechanism 22 to leave the positioning area 211 . The second surface of the second limiting mechanism 23 is in contact with the rear side of the front wheel. Since the second surface is provided with the second concave-convex structure, the vehicle can cross the second limiting mechanism 23 in the opposite direction of the traveling direction (the direction away from the first limiting mechanism 22). Two limiting mechanisms 23 to leave the positioning area 211.

By arranging a second concave-convex structure on the second surface of the second limiting mechanism 23 for contact with the wheel, the vehicle needs to cross the second limiting mechanism 23 to leave the positioning area 211 after completing the power exchange. The second concave-convex structure can increase the size of the second surface. The friction between the two surfaces and the wheel when the wheel crosses the second limiting mechanism 23 prevents the wheel from slipping with the second limiting mechanism 23, facilitates the wheel to smoothly leave the positioning area 211, and improves the efficiency of battery exchange.

There are many structural forms of the second limiting mechanism 23. The structure of the second limiting mechanism 23 may be the same as that of the first limiting mechanism 22, or may be different. For example, please continue to refer to Figures 5, 6, and 7. In some embodiments, the second limiting mechanism 23 includes a plurality of second rollers 231 arranged along the second direction Y, and at least part of the surface of the second rollers 231 A second concave and convex structure is provided.

Multiple means two or more. The second roller 231 is rotatably installed in the positioning area 211 . The plurality of second rollers 231 are arranged along the second direction Y. The extending direction of the rotation axis of the second rollers 231 may be perpendicular to the second direction Y, or may be arranged at an acute angle to the second direction Y. The second concave-convex structure is provided on the outer peripheral surface of the second roller 231 . The plurality of second rollers 231 may have a second concave-convex structure provided on the outer peripheral surface of part of the second rollers 231, or the plurality of second rollers 231 may have a first concave-convex structure provided on the outer peripheral surface of all the first rollers 221. The second surface includes a portion of the outer peripheral surface of each second roller 231 .

In an embodiment in which the first limiting mechanism 22 includes the first rollers 221 arranged along the second direction Y, the rotation axes of the first roller 221 and the second roller 231 are both inclined, so that the first roller 221 and the second roller 231 are inclined. The two rollers 231 are arranged in an inverted "eight" shape.

The number of the first rollers 221 of the first limiting mechanism 22 and the number of the second rollers 231 of the second limiting mechanism 23 may be the same or different.

In other embodiments, the second limiting mechanism 23 may also be a second flat plate structure arranged obliquely on the base 21 , and the second flat plate structure has a second surface for contacting the wheel.

The plurality of second rollers 231 are arranged along the second direction Y. The second direction Y is consistent with the axial direction of the wheel. The rotation axis of the wheel and the rotation axis of the second roller 231 are arranged at an angle. When the wheel needs to leave the positioning area 211 When the wheel rotates relative to the second roller 231, since the rotation axis of the wheel and the rotation axis of the second roller 231 are arranged at an angle, the second roller 231 will not be driven to rotate when the wheel rotates, so that the wheel will not drive the second roller 231. The rotation of 231 causes the wheels to slip, so that the wheels can leave the positioning area 211 smoothly.

In some embodiments, the angle between the extending direction of the second concave-convex structure and the traveling direction of the wheel is less than or equal to 90°.

The angle between the extending direction of the second concave-convex structure and the traveling direction of the wheel is less than or equal to 90°, which means that along the up and down direction, the projection of the extending direction of the second concave-convex structure on the base 21 and the traveling direction of the wheel on the base 21 The angle of the projection on is less than or equal to 90°. The up and down directions, the first direction X and the second direction Y are perpendicular to each other.

If the angle between the extending direction of the second concave-convex structure and the traveling direction of the wheel is less than 90°, then the extending direction of the second concave-convex structure and the traveling direction of the wheel are arranged at an acute angle. If the angle between the extending direction of the second concave-convex structure and the traveling direction of the wheel is equal to 90°, the extending direction of the second concave-convex structure is arranged perpendicularly to the traveling direction of the wheel. The friction force at the contact position between the second limiting mechanism 23 and the wheel has a component force along the tangential direction of the wheel, so that the wheel can pass over the second limiting mechanism 23 or help the wheel pass over the first limiting mechanism 22 .

Therefore, the angle between the extending direction of the second concave-convex structure and the traveling direction of the wheel is less than or equal to 90°, and the second limiting The component of the frictional force at the contact position between the mechanism 23 and the wheel along the tangential direction of the wheel makes the wheel less likely to slip when passing over the second limiting mechanism 23 or the first limiting mechanism 22 .

As shown in FIG. 7 , in some embodiments, the top of the base 21 is provided with a receiving portion 212 , the receiving portion 212 defines a positioning area 211 , and the first limiting mechanism 22 and the second limiting mechanism 23 are both disposed in the receiving portion. 212.

The receiving portion 212 is a groove depressed downward from the top of the base 21 . The receiving portion 212 has vertical planes arranged relatively in the first direction X, and both the first limiting mechanism 22 and the second limiting mechanism 23 are inclined relative to the vertical plane. In this embodiment, both the first limiting mechanism 22 and the second limiting mechanism 23 are completely accommodated in the accommodating portion 212 , so the tops of the first limiting mechanism 22 and the second limiting mechanism 23 will not exceed the base 21 The top of the vehicle wheel facilitates the vehicle wheels to enter the positioning space defined by the first limiting mechanism 22 and the second limiting mechanism 23 .

The first limiting mechanism 22 and the second limiting mechanism 23 are both arranged in the receiving part 212. When the wheel enters the receiving part 212 and comes into contact with the first limiting mechanism 22 and the second limiting mechanism 23, there will be a relatively obvious vibration. , which can provide signals for timely parking. The first limiting mechanism 22 and the second limiting mechanism 23 are both provided in the accommodating portion 212, which can reduce the volume of the wheel positioning device 20.

When the wheels of the vehicle are located in the positioning area 211, it is possible that the position of the vehicle relative to the battery swap trolley is not accurate, so that accurate battery swapping cannot be achieved. Therefore, as shown in FIG. 8 , in some embodiments, the wheel positioning device 20 further includes a first driving mechanism 24 , which is used to drive the wheel axially to adjust the position of the wheel in the positioning area 211 .

For example, the wheels are not parked in the middle area of the positioning area 211, but the wheels need to be parked in the middle area of the positioning area 211 to achieve accurate positioning of the battery exchange trolley and the vehicle. The first driving mechanism 24 can drive the wheels to move along the axial direction of the wheels. The middle area of positioning area 211.

The first driving mechanism 24 may be a linear drive motor, a hydraulic cylinder, a pneumatic cylinder, etc. The first driving mechanism 24 is disposed on one side of the base 21 along the second direction Y. The wheel alignment device 20 may include a first driving mechanism 24 that drives the wheel to move in the axial direction of the wheel in forward and reverse directions to adjust the position of the wheel in the forward or reverse direction. Or the wheel positioning device 20 may be driven by two first driving mechanisms 24. One of the two first driving mechanisms 24 drives the wheel to move in the forward direction in the axial direction of the wheel, and the other of the two first driving mechanisms 24 drives the wheel in the axial direction of the wheel. One moves along the counter-drive wheel in the axial direction of the wheel.

In an embodiment in which the rotation axis of the first roller 221 and the second roller 231 is perpendicular to the rotation axis of the wheel, the first driving mechanism 24 drives the wheel along the axial direction of the wheel. During the movement of the wheel, the wheel interacts with the first roller 221 and the second roller 231 The rolling fit makes it easier for the first driving mechanism 24 to drive the wheel to move in the axial direction of the wheel.

The first driving mechanism 24 can drive the wheel along the axis of the wheel to adjust the position of the wheel in the positioning area 211 so that the vehicle can be accurately positioned with the battery 2000 and the battery 2000 can be replaced smoothly.

The embodiment of the present application also provides a power exchange platform 100. The power exchange platform 100 includes a parking platform 10 and the wheel alignment device 20 provided in any of the above embodiments. The parking platform 10 is used for parking vehicles; the wheel alignment device 20 is installed on the parking platform. 10.

Each wheel positioning device 20 is used to position one wheel. The power exchange platform 100 may include one or more wheel alignment devices 20 .

The vehicle is parked on the battery exchange platform 100. Since the first limiting mechanism 22 is provided with a first concave-convex structure on the first surface that is in contact with the wheel, the first concave-convex structure can increase the first surface when the wheel crosses the first limiting mechanism 22. The friction between the vehicle and the wheels prevents the wheels and the first limiting mechanism 22 from slipping when the vehicle leaves the positioning area 211 after completing the power exchange, thereby facilitating the wheels to smoothly leave the positioning area 211 and improving the power exchange efficiency.

As shown in FIGS. 1 to 4 , in some embodiments, the power exchange platform 100 includes two wheel positioning devices 20 , the two wheel positioning devices 20 are spaced apart on the parking platform 10 , and the positioning areas 211 of the two wheel positioning devices 20 One for parking the two front wheels of the vehicle.

The two wheel positioning devices 20 are spaced apart along the second direction Y. Two wheel positioning devices 20 are arranged close to the third section 13 of the parking platform 10 .

The positioning areas 211 of the two wheel positioning devices 20 are respectively used to park the two front wheels of the vehicle, and can limit the positions of the two front wheels of the vehicle respectively, thereby improving the stability of parking.

In some embodiments, the first surface is used to contact the front side of the front wheel, and the first concave-convex structure is used to increase the friction between the first surface and the front wheel when the front wheel crosses the first limiting mechanism 22 in the direction of travel. .

Along the direction of travel, the first limiting mechanism 22 is closer to the third section 13 of the parking platform 10 than the second limiting mechanism 23. When the power exchange is completed, the vehicle can continue to travel along the direction of travel and leave the third section 13 for power exchange. The platform does not require the vehicle to turn around or turn.

The first concave-convex structure is used to increase the friction between the first surface and the front wheel when the front wheel crosses the first limiting mechanism 22 in the direction of travel, to prevent the front wheel and the first limiting mechanism 22 from slipping, and to facilitate the wheel to smoothly leave the positioning area. 211, improve the efficiency of battery replacement. In addition, when the vehicle stops in the positioning area 211, the first concave-convex structure also has a certain stopping effect on the vehicle.

As shown in FIGS. 1-4 , in some embodiments, the power exchange platform 100 further includes a rear wheel positioning device 400 . The rear wheel positioning device 400 is installed on the parking platform 10 , and is used to position the rear wheel of the vehicle on the parking platform 10 . When the first limiting mechanism 22 and the second limiting mechanism 23 of the wheel positioning device 20 position the front wheel of the vehicle in the positioning area 211, the rear wheel is positioned by the rear wheel positioning device 400.

As shown in FIG. 9 , the rear wheel positioning device 400 includes at least one row of third rollers 410 . Each row of third rollers 410 includes a plurality of third rollers 410 arranged side by side along the second direction Y. The third rollers 410 are rotatable. On the parking platform 10, the rotation axis of the third roller 410 extends along the first direction X. As shown in FIGS. 1 and 2 , each rear wheel positioning device 400 includes two rows of third rollers 410 . The number of third rollers 410 in each row may be the same or different.

In some embodiments, the battery exchange platform 100 includes two rear wheel positioning devices 400 , the two rear wheel positioning devices 400 are spaced apart along the second direction Y, and the two rear wheel positioning devices 400 are respectively used to position the two rear wheels of the vehicle. wheel.

In some embodiments, the battery swap platform 100 also includes a second driving mechanism (not shown in the figure). The second driving mechanism is used to axially drive the rear wheels to adjust the rear wheels on the rear wheel positioning device 400 s position.

The second driving mechanism may refer to the first driving mechanism 24, and the second driving mechanism may be a linear drive motor, a hydraulic cylinder, a pneumatic cylinder, etc. The second driving mechanism is disposed on one side of the parking platform 10 along the second direction Y. The power exchange platform 100 may include a second driving mechanism that drives the rear wheel to move forward and reverse in the axial direction of the rear wheel to adjust the position of the rear wheel in the forward or reverse direction. Alternatively, the power swap platform 100 may be driven by two second driving mechanisms. One of the two second driving mechanisms drives the rear wheel to move in the forward direction in the axial direction of the rear wheel, and the other of the two second driving mechanisms drives the rear wheel to move in the axial direction of the rear wheel. The latter moves along the reverse drive rear wheel in the axial direction of the rear wheel.

The rear wheel can be driven along the axis of the rear wheel through the second driving mechanism to adjust the position of the rear wheel on the rear wheel positioning device 400 so that the vehicle can be accurately positioned with the battery 2000 and the battery 2000 can be replaced smoothly.

The embodiment of the present application also provides a power exchange system 1000. The power exchange system 1000 includes a track 300, the power exchange platform 100 provided in the above embodiment, a battery pick-and-place device 200 and a power exchange trolley. The power exchange platform 100 is disposed on the track 300. One end; the battery pick-and-place device 200 is located at the other end of the track 300; the battery swap trolley is movably disposed on the track 300 to transport batteries between the battery swap platform 100 and the battery pick-and-place device 200.

The battery pick-and-place device 200 is used to store batteries 2000. The battery swapping trolley moves on the track 300 and is used to transfer the battery 2000 between the battery swapping platform 100 and the battery pick-and-place device 200 . The battery swapping trolley can remove the battery 2000 from the vehicle parked on the battery swapping platform 100 and transport it to the battery picking and placing device 200 along the track 300. The battery swapping trolley can also transport the battery 2000 of the battery picking and placing device 200 along the track 300. The rail 300 is transported to the battery replacement platform 100 and the battery 2000 is locked and parked on the vehicle on the battery replacement platform 100, thereby completing the replacement of the vehicle battery 2000.

In the power exchange system 1000 provided with the power exchange platform 100 provided in the above embodiment, when the vehicle completes the power exchange and leaves the positioning area 211 of the power exchange platform 100, the wheels and the first limiting mechanism 22 are not easy to slip, which facilitates the wheels to smoothly leave the positioning area 211. Improve power exchange efficiency.

The embodiment of the present application provides a battery exchange platform 100, which includes a parking platform 10, two wheel alignment devices 20 and two rear wheel alignment devices 400. The parking platform 10 is used for parking vehicles; the wheel alignment device 20 and the rear wheel alignment device 400 Both are installed on the parking platform 10.

The two wheel positioning devices 20 are arranged at intervals along the second direction Y, and the two wheel positioning devices 20 are respectively used to position the vehicle. front wheel. The two rear wheel positioning devices 400 are arranged at intervals along the second direction Y, and the two rear wheel positioning devices 400 are respectively used to position the rear wheels of the vehicle.

The wheel positioning device 20 includes a base 21, a first limiting mechanism 22 and a second limiting mechanism 23; the base 21 is provided with a receiving portion 212 to define a positioning area 211; the first limiting mechanism 22 and the second limiting mechanism 23 are arranged obliquely in the receiving portion 212, and the first limiting mechanism 22 and the second limiting mechanism 23 are arranged in an inverted "eight" shape. The first limiting mechanism 22 includes a plurality of first rollers 221 arranged along the second direction Y. The rotation axes of the plurality of first rollers 221 are arranged obliquely and perpendicular to the rotation axis of the front wheel. The first concave-convex structure is provided on the outer peripheral surface of the first roller 221, and the extending direction of the first concave-convex structure is perpendicular to the rotation axis of the wheel. The second limiting mechanism 23 includes a plurality of second rollers 231 arranged along the second direction Y. The rotation axes of the plurality of second rollers 231 are obliquely arranged and perpendicular to the rotation axis of the front wheel. The second concave-convex structure is provided on the outer peripheral surface of the second roller 231, and the extending direction of the second concave-convex structure is perpendicular to the rotation axis of the wheel.

When the vehicle leaves the parking platform 10 in the direction of travel, the first concave-convex structure and the second concave-convex structure can increase the friction between the front wheels and the first limiting mechanism 22 and the second limiting mechanism 23 to prevent the vehicle from traveling along the road after completing the power exchange. The front wheel slips when the direction leaves the wheel positioning device 20.

The rear wheel positioning device 400 includes two rows of third rollers 410. Each row of third rollers 410 includes a plurality of third rollers 410 arranged side by side along the second direction Y. The third rollers 410 are rotatably installed on the parking platform 10. The rotation axis of the three rollers 410 extends along the first direction X.

The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included in the protection scope of this application.

Claims (13)

1. A wheel alignment device, including:

   base with locating area for parking wheels;

   The first limiting mechanism is arranged obliquely in the positioning area;

   A second limiting mechanism is arranged obliquely in the positioning area, and the first limiting mechanism and the second limiting mechanism are used to coordinately position the wheel in the positioning area;

   Wherein, the first surface of the first limiting mechanism used to contact the wheel is provided with a first concave and convex structure, and the first concave and convex structure is used to increase the size of the first surface when the wheel passes over the first surface. A limiting mechanism has friction with the wheel.
2. The wheel positioning device according to claim 1, wherein the positioning area has a first direction and a second direction that are perpendicular to each other, and the first limiting mechanism and the second limiting mechanism are along the first direction. Arranged, the second direction is consistent with the axial direction of the wheel;

   Wherein, the first limiting mechanism includes a plurality of first rollers arranged along the second direction, and at least part of the surface of the first rollers is provided with the first concave and convex structure.
3. The wheel positioning device according to claim 2, wherein along the second direction, at least one of the first rollers located in the middle area of the first limiting mechanism is provided with the first concave and convex structure.
4. The wheel positioning device according to claim 2 or 3, wherein the angle between the extension direction of the first concave-convex structure and the traveling direction of the wheel is less than or equal to 90°.
5. The wheel positioning device according to any one of claims 2 to 4, wherein the second surface of the second limiting mechanism for contacting the wheel is provided with a second concave and convex structure, and the second concave and convex structure is To increase the friction between the second surface and the wheel when the wheel passes over the second limiting mechanism.
6. The wheel alignment device according to claim 5, wherein the second limiting mechanism includes a plurality of second rollers arranged along the second direction, and at least part of the surface of the second roller is provided with the first Two concave and convex structures.
7. The wheel positioning device according to claim 5 or 6, wherein an angle between the extending direction of the second concave-convex structure and the traveling direction of the wheel is less than or equal to 90°.
8. The wheel positioning device according to any one of claims 1 to 7, wherein a receiving portion is provided on the top of the base, the receiving portion defines the positioning area, the first limiting mechanism and the The second limiting mechanisms are all arranged on the receiving portion.
9. The wheel alignment device according to any one of claims 1 to 7, wherein the wheel alignment device further includes a first driving mechanism, the first driving mechanism is used to drive the wheel in the axial direction of the wheel to Adjust the position of the wheel in the positioning area.
10. A power exchange platform includes:

    Parking platform for parking vehicles;

    The wheel positioning device according to any one of claims 1 to 9, which is installed on the parking platform.
11. The battery exchange platform according to claim 10, wherein the battery exchange platform includes two wheel positioning devices, the two wheel positioning devices are arranged at intervals on the parking platform, and the two wheel positioning devices are spaced apart from each other. The positioning areas are respectively used to park the two front wheels of the vehicle.
12. The battery exchange platform according to claim 11, wherein the first surface is used to contact the front side of the front wheel, and the first concave-convex structure is used to increase the distance between the first surface and the front wheel. The friction force with the front wheel when crossing the first limiting mechanism in the direction of travel.
13. A power exchange system, including:

    track;

    The power exchange platform according to any one of claims 10 to 12, which is arranged at one end of the track;

    A battery access device located at the other end of the track;

    A battery swapping trolley is movably disposed on the track to transport batteries between the battery swapping platform and the battery pick-and-place device.