Wheel positioning device, battery swap platform and control method for battery swap station battery swap platform

Abstract

The present invention discloses a wheel positioning device, a battery swap platform and a control method for a battery swap platform of a battery swap station. The wheel positioning device comprises: a limiting device, the limiting device comprises two limiting members, both of which are rotatably connected to the battery swap platform body through a rotating end and protrude from the upper surface of the battery swap platform body; the limiting member comprises a sliding inclined plane and a supporting inclined plane that are rotatably connected, a rotating end is arranged on a side of the supporting inclined plane away from the sliding inclined plane and is arranged to be rotatably connected to the battery swap platform body, and a side of the sliding inclined plane away from the supporting inclined plane is arranged to be slidably connected to the battery swap platform body; and a driving component, the driving component comprises two flexible cavities, and the two flexible cavities are respectively connected to the two limiting members. Thus, the vehicle can effectively reduce the bumpy feeling through the limiting device, greatly improving the experience; and it has the advantages of simple control, good flexibility and high stability; and the flexible cavity occupies less space when not inflated.

Description

Technical Field

[0001] The present invention relates to a wheel positioning device for a battery swapping platform in a battery swapping station, a battery swapping platform and a control method. Background Art

[0002] The vehicle loading platform is an important part of the battery replacement equipment for electric vehicles. When the electric vehicle drives onto the vehicle loading platform, the vehicle positioning device can locate the electric vehicle.

[0003] At present, the vehicle positioning device generally uses a V-shaped groove to position the wheel. When the wheel enters the V-shaped groove, the vehicle is parked and the battery replacement begins. The advantage of this positioning method is that the vehicle positioning device is simple and reliable, and does not require a too complicated mechanism to achieve the positioning of the electric vehicle in the front and rear directions. However, due to structural limitations, the existing vehicle positioning device is generally a fixed V-shaped positioning component, and the positioning component protrudes from the vehicle loading platform. When the electric vehicle enters the V-shaped positioning component, the driver has a clear feeling of driving into a pit at the moment the wheel enters the groove. After the battery replacement is completed, when the V-shaped positioning component is driven out, the electric vehicle needs to increase the throttle to drive out of the groove. The electric vehicle will feel bumpy when passing the V-shaped positioning component, and the driver experience is relatively poor.

[0004] In the patent document with the patent authorization announcement number CN211765460U, the driving mechanism drives two blocking members to open or close in different directions through a transmission mechanism, thereby forming a wheel limiting space and preventing the vehicle from being bumped. First, the driving mechanism described in the patent document uses a push rod or a servo motor to drive the opening and closing of the blocking member. The push rod or the servo motor is connected to one end of the blocking member, and a stop position is pre-set. Under the action of the push rod or the servo motor, the blocking member rotates along the opposite end of the push rod to the stop position and stops rotating. Since the force of the push rod or the servo motor is not gentle enough, it will cause a certain impact on the wheel. Moreover, since the driving mechanism and the transmission mechanism have a certain volume and need to occupy a certain installation and moving space, the installation position is greatly limited. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the problem that the existing vehicle positioning device will cause certain impact to the vehicle during the vehicle positioning process. In addition, since the drive mechanism and the transmission mechanism have a certain volume, they need to occupy a certain installation and moving space, and the installation position is greatly limited. A wheel positioning device, a battery swap platform and a control method for a battery swap platform in a battery swap station are provided.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] A wheel positioning device for a battery swapping platform of a battery swapping station, comprising:

[0008] A limiting device, the limiting device comprising two limiting members, both of which are rotatably connected to the battery swap platform body through a rotating end portion and protrude from the upper surface of the battery swap platform body, and the two limiting members are respectively used to limit the two movement trends of the vehicle's wheels forward and backward, so that the vehicle's wheels are limited between the two limiting members;

[0009] The limiting member includes a sliding inclined surface and a supporting inclined surface which are rotatably connected. The rotating end portion is arranged on a side of the supporting inclined surface away from the sliding inclined surface and is arranged to be rotatably connected to the battery exchange platform body. The side of the sliding inclined surface away from the supporting inclined surface is arranged to be slidably connected to the battery exchange platform body; and a driving component, which includes two flexible cavities, and the two flexible cavities are respectively connected to the two limiting members. The limiting member is rotated along the rotating end portion by inflating or deflating the flexible cavities, so that the inclination angles between the supporting inclined surface and the sliding inclined surface and the battery exchange platform body change, so as to push the sliding inclined surface to slide forward in a direction away from the supporting inclined surface, so as to realize that the limiting member is reduced in height protruding from the upper surface of the battery exchange platform body when a vehicle passes by.

[0010] In the present scheme, the above-mentioned structural form is adopted, and the positioning of the vehicle is achieved by inflating the flexible cavity. Whether the positioning is achieved is determined by whether the flexible cavity reaches a force balance. During the positioning process, the gas can absorb part of the force through volume compression, so that the force of the limiter on the wheel is relatively gentle and not easy to produce impact, which greatly improves the experience of the driver and passengers in the vehicle; the sliding slope is then pushed to slide on the battery exchange platform body by deflating the flexible cavity, so that the height of the limiter protruding from the upper surface of the battery exchange platform body is reduced when the vehicle passes, thereby effectively reducing the bumpy feeling when the vehicle passes through the limiter, greatly improving the experience; and it has the advantages of simple control, good flexibility and high stability, effectively realizing the precise positioning of the vehicle and avoiding vehicle displacement during battery exchange operation; at the same time, a flexible cavity is used as a driving component, which occupies a small space when not inflated, has a simple structure and low cost.

[0011] Preferably, the two limit members are respectively a front limit member and a rear limit member, and the front limit member and the rear limit member are arranged on the upper surface of the battery exchange platform body front and back along the vehicle driving direction; the two flexible cavities are respectively connected to the supporting inclined surface of the front limit member and the supporting inclined surface of the rear limit member;

[0012] The supporting slope of the front limit member is close to the sliding slope of the rear limit member, and when the flexible cavity is inflated or deflated, the sliding slope of the front limit member and the sliding slope of the rear limit member slide in the same direction; or, the supporting slope of the front limit member is close to the supporting slope of the rear limit member, and when the flexible cavity is inflated or deflated, the sliding slope of the front limit member and the sliding slope of the rear limit member slide in opposite directions.

[0013] In the present solution, the above-mentioned structural form is adopted, and the front limit member, the rear limit member, and the two flexible cavities are arranged on the same side, which makes installation and arrangement convenient; especially when the sliding inclined surfaces of the front limit member and the rear limit member are set to slide forward, when the flexible cavity is deflated but not enough to turn the front limit member and the rear limit member into a plane, the front limit member and the rear limit member can be pressed into a plane as the wheel rolls, thereby achieving the effective reduction of the bumpy feeling of the vehicle through the limit device, greatly improving the experience.

[0014] In addition, by symmetrically arranging the front limit piece, the rear limit piece and the two flexible cavities, the drive assembly directly acts on the supporting inclined surfaces of the front limit piece and the rear limit piece and is used to limit the two movement trends of the vehicle's wheels forward and backward, thereby achieving precise positioning, further avoiding vehicle displacement during battery replacement operations, and greatly improving the stability of the wheel positioning device.

[0015] Preferably, after the flexible cavity is deflated, the upper surface of the limiting device and the upper surface of the battery exchange platform body are located on the same plane.

[0016] In this solution, the above-mentioned structural form is adopted to achieve that the vehicle passes through the limiting device without any bumps, and the experience is optimal.

[0017] Preferably, the cross-sectional shape of the flexible cavity after being filled with air is fan-shaped and has two connecting planes, and the two connecting planes are respectively connected to the supporting slope and the battery exchange platform body.

[0018] In this solution, the above-mentioned structural form is adopted, and the flexible cavity is connected to the supporting inclined surface and the battery exchange platform body through two connecting planes, so that the connection area between the flexible cavity and the supporting inclined surface and the battery exchange platform body is large, and the stability of the driving limiter is higher when rotating. At the same time, the cross-sectional shape of the flexible cavity after being filled with air is fan-shaped, so that the limiter can rotate smoothly upward or downward, and the wheel abutment limit is more stable.

[0019] Preferably, the flexible cavity is an accordion airbag, and after the flexible cavity is filled with air, a preset angle is formed between the two connecting planes, and the non-linear side of the flexible cavity is an accordion fold.

[0020] In this solution, the above-mentioned structural form is adopted. After being filled with air, a preset angle is formed between the two connecting planes, so that the angle between the supporting slope and the battery exchange platform body is constant, so that the supporting slope can limit the wheel at a preset angle and achieve precise positioning. At the same time, the flexible cavity can be inflated and opened or deflated and contracted through the accordion folds, which is conducive to deformation and contraction, occupies little space, has a simple structure and low cost.

[0021] Preferably, a roller is provided on one side of the sliding inclined surface away from the supporting inclined surface.

[0022] In this solution, the above-mentioned structural form is adopted, the sliding slope is supported against the battery swap platform body by rollers, and the rollers slide on the battery swap platform body, so that the sliding slope is set to be slidably connected to the battery swap platform body. The rollers facilitate the sliding of the sliding slope on the battery swap platform body, and the stability is higher.

[0023] Preferably, a downwardly recessed accommodating cavity is provided on the battery exchange platform body at an installation position corresponding to the flexible cavity, and the accommodating cavity is used to accommodate the flexible cavity after being deflated.

[0024] In this solution, the above-mentioned structural form is adopted. After the flexible cavity is deflated, the flexible cavity will be located in the accommodating cavity and will not protrude from the upper surface of the battery swap platform body, so that the upper surface of the limit device and the upper surface of the battery swap platform body can be located at the same horizontal plane, and the vehicle can pass through the limit device without any bumps. At the same time, the accommodating cavity can also be used to protect the flexible cavity and extend the service life of the flexible cavity; and the overall space occupied by the drive assembly is very small.

[0025] Preferably, the length of the supporting slope along the vehicle's traveling direction is greater than the length of the accommodating cavity along the vehicle's traveling direction.

[0026] In this solution, the above-mentioned structural form is adopted, and the supporting slope is used to shield the accommodating cavity and protect the flexible cavity; at the same time, the supporting slope will not fall into the accommodating cavity, ensuring that the wheel will not feel bumpy due to the accommodating cavity.

[0027] Preferably, the battery exchange platform body is provided with a slide groove corresponding to the sliding path of the sliding slope, and the slide groove is connected to the accommodating cavity;

[0028] After the flexible cavity is deflated, the sliding slope and the supporting slope are accommodated in the slide groove and the accommodating cavity, so that the upper surfaces of the sliding slope and the supporting slope are flush with the upper surface of the battery exchange platform body.

[0029] In this solution, the above-mentioned structural form is adopted, and the sliding groove can limit the sliding of the sliding inclined surface, effectively avoiding the offset and dislocation phenomenon during the sliding of the sliding inclined surface, and greatly improving the stability of the wheel positioning device. At the same time, the space of the sliding groove and the accommodating cavity is used to accommodate the sliding inclined surface and the supporting inclined surface, so that the deflation of the flexible cavity will drive the limiting member to rotate downward, so that the upper surface of the limiting device can be flush with the upper surface of the battery exchange platform body, so that the vehicle can pass through the limiting device without any bumps, and the experience is the best.

[0030] Preferably, the two limit members are respectively a front limit member and a rear limit member, the support slope and the sliding slope of the rear limit member and the support slope and the sliding slope of the front limit member are sequentially arranged on the battery exchange platform body along the driving direction of the vehicle, and the two flexible cavities are respectively connected to the two support slopes;

[0031] The front limiting member is used to limit the forward movement tendency of the vehicle wheels through the supporting inclined surface, and the rear limiting member is used to limit the backward movement tendency of the vehicle wheels through the sliding inclined surface.

[0032] In the present solution, the above-mentioned structural form is adopted, and the front limit member and the rear limit member are arranged on the same side of the battery exchange platform body, which is convenient for installation and arrangement; and the wheels of the vehicle are limited by the supporting inclined surface of the front limit member and the sliding inclined surface of the rear limit member to achieve precise positioning and avoid vehicle displacement during battery exchange operation.

[0033] Preferably, a ball or a roller is provided on the sliding inclined surface of the rear limit member.

[0034] In the present solution, the above-mentioned structural form is adopted, and the wheels are facilitated to move on the sliding inclined plane through balls or rollers, so that the wheels can be adjusted to achieve precise positioning.

[0035] Preferably, the sliding slope of the rear limit member is provided with a roller whose axis is perpendicular to the driving direction of the vehicle.

[0036] In this solution, the above-mentioned structural form is adopted, and the rollers whose axes are perpendicular to the driving direction of the vehicle facilitate the forward and backward movement of the wheels on the sliding slope, making it easy to adjust the wheels to achieve precise positioning.

[0037] Preferably, the cross-section of the limiting member along the front-rear direction of the vehicle is triangular.

[0038] In the present solution, the above-mentioned structural form is adopted, so that the limiting piece protruding from the upper surface of the battery exchange platform body will be inclined toward the wheel, and the inclined surface has a limiting effect on the wheel; at the same time, it is convenient to support the inclined surface to rotate downward when the wheel passes through the limiting piece, which is very convenient to use.

[0039] A battery swap platform comprises the wheel positioning device as described above, wherein the limiting device is installed at the position where the wheel of the corresponding vehicle stops.

[0040] In the present scheme, the above-mentioned structural form is adopted, and the positioning of the vehicle is achieved by inflating the flexible cavity. Whether the positioning is achieved is determined by whether the flexible cavity reaches a force balance. During the positioning process, the gas can absorb part of the force through volume compression, so that the force of the limiter on the wheel is softer and less likely to cause impact, which greatly improves the experience of the driver and passengers in the vehicle; the sliding slope is then pushed to slide on the battery exchange platform body by deflating the flexible cavity, so that the height of the limiter protruding from the upper surface of the battery exchange platform body is reduced when the vehicle passes, thereby effectively reducing the bumpy feeling when the vehicle passes through the limiter, greatly improving the experience; and it has the advantages of simple control, good flexibility and high stability, and effectively realizes the precise positioning of the vehicle; at the same time, the flexible cavity occupies less space when it is not inflated.

[0041] A vehicle positioning control method is used in the battery swap platform as described above, and the vehicle positioning control method comprises the following steps:

[0042] Before the vehicle enters the battery swapping platform body, the flexible cavity of the rear limiter corresponding to the front wheel parking position is controlled to deflate to drive the inclination angle between the supporting inclined surface of the rear limiter and the battery swapping platform body to decrease, so that the vehicle can pass over the rear limiter;

[0043] The flexible cavity of the front limit piece corresponding to the front wheel parking position is controlled to be inflated or remain inflated so that the inclination angle between the supporting slope of the front limit piece and the battery exchange platform body becomes larger, thereby limiting the forward movement trend of the vehicle.

[0044] In this solution, the flexible cavity connected to the rear limiter is controlled to be deflated, thereby reducing the height of the rear limiter protruding from the upper surface of the battery exchange platform body, so that when the front wheel of the vehicle passes over the rear limiter and enters the wheel alignment device, the bumpy feeling is effectively reduced, providing a good driving experience. The flexible cavity of the front limiter is controlled to be inflated or remain inflated, and the height of the front limiter protruding from the upper surface of the battery exchange platform body is maintained to limit the forward movement trend of the vehicle, thereby achieving precise positioning of the front wheels of the vehicle. Driving through a flexible cavity has the advantages of simple control, good flexibility and high stability, and can effectively achieve precise positioning of the front wheels of the vehicle; at the same time, the flexible cavity occupies less space when not inflated, has a simple structure and low cost.

[0045] Preferably, after the vehicle reaches the battery exchange point of the battery exchange platform body, the flexible cavity of the rear limit member corresponding to the front wheel parking position is controlled to inflate to drive the inclination angle between the supporting slope of the rear limit member and the battery exchange platform body to increase, thereby positioning the front wheel.

[0046] In this solution, by inflating the flexible cavity of the rear limit piece, the rear limit piece protrudes above the upper surface of the battery swap platform body, so that the wheels of the vehicle are limited between the front limit piece and the rear limit piece, to ensure that the front wheels of the vehicle will not shift during the battery swap operation. It has the advantages of simple control, good flexibility and high stability, and can achieve precise positioning of the front wheels of the vehicle to avoid displacement of the vehicle during the battery swap operation.

[0047] Preferably, the vehicle positioning control method further includes:

[0048] Before the vehicle drives out of the battery exchange platform body, the flexible cavities of the front limit member and the rear limit member corresponding to the front wheel parking position are controlled to deflate, so as to drive the inclination angles between the supporting slopes of the front limit member and the rear limit member and the battery exchange platform body to become smaller, so that the vehicle can pass over the front limit member and the rear limit member.

[0049] In this solution, the flexible cavity connected to the front limit piece and the rear limit piece is controlled to be deflated, thereby reducing the height of the front limit piece and the rear limit piece protruding from the upper surface of the battery exchange platform body, so that when the front wheels and the rear wheels of the vehicle pass the front limit piece and the rear limit piece corresponding to the front wheel parking place, the bumpy feeling can be effectively reduced, and the riding experience is good; at the same time, when the front wheels of the next vehicle pass the rear limit piece and enter the wheel alignment device, the bumpy feeling can be effectively reduced, and the riding experience is good. It occupies less space, has a simple structure, and is low in cost.

[0050] Preferably, the vehicle positioning control method further includes:

[0051] Before the vehicle enters or exits the battery exchange platform body's battery exchange position, the flexible cavities of the front limit member and the rear limit member corresponding to the rear wheel parking position are controlled to deflate, so as to drive the inclination angles between the supporting slopes of the front limit member and the rear limit member and the battery exchange platform body to become smaller, so that the vehicle can pass over the rear limit member and the front limit member.

[0052] In this solution, the flexible cavity connected to the front limiter and the rear limiter is controlled to be deflated, thereby reducing the height of the front limiter and the rear limiter protruding from the upper surface of the battery exchange platform body, so that when the front wheels and the rear wheels of the vehicle pass the front limiter and the rear limiter at the corresponding rear wheel stop, the bumpy feeling can be effectively reduced, providing a good riding experience; at the same time, when the front wheels of the next vehicle pass the front limiter and the rear limiter at the corresponding rear wheel stop, and the rear wheels of the next vehicle pass the rear limiter at the corresponding rear wheel stop, the bumpy feeling can be effectively reduced, providing a good riding experience, and it occupies less space, has a simple structure, and is low in cost.

[0053] Preferably, the vehicle positioning control method further includes:

[0054] After the vehicle reaches the battery exchange point of the battery exchange platform body, the flexible cavities of the front limit member and the rear limit member corresponding to the rear wheel parking position are controlled to inflate, so as to drive the inclination angle between the supporting inclined surfaces of the front limit member and the rear limit member and the battery exchange platform body to increase, thereby positioning the vehicle.

[0055] In this solution, the inflation of the flexible cavity connected to the front limiter and the rear limiter is controlled, and the front limiter and the rear limiter both protrude from the height of the upper surface of the battery swap platform body. The front limiter and the rear limiter are used to limit the two movement trends of the rear wheels of the vehicle, namely, the forward movement and the backward movement, respectively, so that the rear wheels of the vehicle are limited between the front limiter and the rear limiter to ensure that the rear wheels of the vehicle will not shift during the battery swap operation. It has the advantages of simple control, good flexibility and high stability, and can achieve precise positioning of the rear wheels of the vehicle to avoid displacement of the vehicle during the battery swap operation.

[0056] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0057] The positive and progressive effects of the present invention are:

[0058] The wheel positioning device, battery swap platform and control method for a battery swap platform in a battery swap station of the present invention push the sliding slope to slide on the battery swap platform body by inflating or deflating the flexible cavity, so that when a vehicle passes, the height of the limiting member protruding from the upper surface of the battery swap platform body is lowered, thereby effectively reducing the bumpy feeling when the vehicle passes through the limiting device, greatly improving the experience; and it has the advantages of simple control, good flexibility and high stability, and effectively realizes the precise positioning of the vehicle; at the same time, the flexible cavity occupies less space when it is not inflated. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 This is a schematic diagram of the structure of the battery swap platform of Example 1 of the present invention when inflating.

[0060] Figure 2 This is a schematic diagram of the structure of the wheel alignment device of Example 1 of the present invention when inflated.

[0061] Figure 3 It is a schematic diagram of a partial three-dimensional structure of the wheel alignment device of Example 1 of the present invention when inflated.

[0062] Figure 4 It is a partial front view structural schematic diagram of the wheel alignment device of Example 1 of the present invention when inflated.

[0063] Figure 5 This is a schematic diagram of the structure of the battery swap platform of Example 1 of the present invention when it is deflated.

[0064] Figure 6It is a schematic structural diagram of the wheel alignment device of embodiment 1 of the present invention when the wheel alignment device is deflated.

[0065] Figure 7 It is a partial structural schematic diagram of the wheel alignment device of embodiment 1 of the present invention when the wheel alignment device is deflated.

[0066] Figure 8 This is a flow chart of a vehicle front wheel alignment control method according to embodiment 2 of the present invention.

[0067] Fig. 9 This is a flow chart of a vehicle rear wheel alignment control method according to embodiment 2 of the present invention.

[0068] Description of reference numerals:

[0069] Limit device 1

[0070] Front stopper 11

[0071] Support slope 111

[0072] Sliding ramp 112

[0073] Rear limiter 12

[0074] Positioning piece 13

[0075] Drive component 2

[0076] Flexible cavity 21

[0077] Battery swap platform body 10

[0078] Accommodating chamber 101

[0079] Chute 102 DETAILED DESCRIPTION

[0080] The present invention will be described more clearly and completely below by way of embodiments in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments.

[0081] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the battery swap platform of an embodiment of the present invention includes a wheel positioning device for a battery swap platform in a battery swap station and a battery swap platform body 10. The wheel positioning device is arranged on the battery swap platform body 10, and the wheel positioning device is installed at the position where the wheels of the corresponding vehicle are parked.

[0082] The wheel positioning device for the battery swap platform of a battery swap station includes a limiting device 1 and a driving assembly 2. The limiting device 1 includes two limiting members, both of which are rotatably connected to the battery swap platform body 10 through a rotating end and protrude from the upper surface of the battery swap platform body 10. The two limiting members are respectively used to limit the two movement trends of the vehicle's wheels forward and backward, so that the vehicle's wheels are limited between the two limiting members; the limiting member includes a rotatably connected sliding inclined surface 112 and a supporting inclined surface 111, and the supporting inclined surface 111 is provided with a rotating end on one side away from the sliding inclined surface 112 and is configured to be rotatably connected to the battery swap platform. The platform body 10, the side edge of the sliding slope 112 away from the supporting slope 111 is configured to be slidably connected to the battery exchange platform body 10; the driving component 2 includes two flexible cavities 21, and the two flexible cavities 21 are respectively connected to two limit members. By inflating or deflating the flexible cavity 21, the limit members are rotated along the rotating end, so that the inclination angles between the supporting slope 111 and the sliding slope 112 and the battery exchange platform body 10 change, so as to push the sliding slope 112 to slide forward in the direction away from the supporting slope 111, so as to achieve the limit member The height protruding from the upper surface of the battery exchange platform body 10 is reduced when the vehicle passes by.

[0083] The limit device 1 is installed at the position where the wheel of the corresponding vehicle is parked. Before the wheel of the vehicle enters the wheel alignment device, the flexible cavity 21 is deflated, and the overall volume of the flexible cavity 21 becomes smaller, so that the sliding slope 112 moves in the direction away from the supporting slope 111, and the supporting slope 111 rotates downward on the battery swap platform body 10 through the rotating end, thereby reducing the height of the limiter protruding from the upper surface of the battery swap platform body 10. The wheel will pass through the limiter and enter the wheel alignment device, so that the vehicle passes through the limiter 1 and effectively reduces the bumpy feeling, which greatly improves the experience.

[0084] When the wheel enters the wheel alignment device and stops at the wheel position, the flexible cavity 21 is inflated, and the overall volume of the flexible cavity 21 becomes larger, so that the sliding slope 112 moves toward the direction close to the supporting slope 111, and the supporting slope 111 rotates upward on the battery swap platform body 10 through the rotating end, and the limiter protrudes from the height of the upper surface of the battery swap platform body 10. The two limiters are used to limit the two movement trends of the vehicle's wheels forward and backward, so that the vehicle's wheels are limited between the two limiters; thereby achieving precise positioning and avoiding vehicle displacement during battery swap operations. At the same time, the vehicle is positioned by inflating the flexible cavity 21, and whether the positioning is achieved is determined based on whether the flexible cavity 21 reaches a force balance. During the positioning process, the gas can absorb part of the force through volume compression, so that the force of the limiter on the wheel is relatively soft and not easy to produce impact, which greatly improves the experience of the driver and passengers in the vehicle.

[0085] Before the wheel of the vehicle drives out of the wheel alignment device, the flexible cavity 21 is deflated, and the overall volume of the flexible cavity 21 becomes smaller, so that the sliding slope 112 moves in the direction away from the supporting slope 111, and the supporting slope 111 rotates downward on the battery swap platform body 10 through the rotating end, thereby reducing the height of the limiter protruding from the upper surface of the battery swap platform body 10, and the wheel will pass through the limit device 1 to drive out of the wheel alignment device. The vehicle passes through the limit device 1 to effectively reduce the bumpy feeling and greatly improve the experience. At the same time, driving through the flexible cavity 21 has the advantages of simple control, good flexibility and high stability, and effectively realizes the precise positioning of the vehicle; at the same time, the flexible cavity 21 is used as the driving component 2, which occupies less space when not inflated, has a simple structure and low cost.

[0086] In this embodiment, the two limit members are respectively a front limit member 11 and a rear limit member 12, and the front limit member 11 and the rear limit member 12 are arranged on the upper surface of the battery exchange platform body 10 front and back along the driving direction of the vehicle; the two flexible cavities 21 are respectively connected to the supporting inclined surface 111 of the front limit member 11 and the supporting inclined surface 111 of the rear limit member 12; the supporting inclined surface 111 of the front limit member 11 is close to the sliding inclined surface 112 of the rear limit member 12, and when the flexible cavity 21 is inflated or deflated, the sliding inclined surface 112 of the front limit member 11 and the sliding inclined surface 112 of the rear limit member 12 slide in the same direction.

[0087] The support bevel 111 and the sliding bevel 112 in the front limit member 11 and the rear limit member 12 are arranged in the same direction, and the two flexible cavities 21 are arranged on the same side and are respectively connected to the support bevel 111 of the front limit member 11 and the rear limit member 12, which is convenient for installation and arrangement. The front limit member 11 is used to limit the forward movement trend of the vehicle's wheels through the support bevel 111, and the rear limit member 12 is used to limit the backward movement trend of the vehicle's wheels through the sliding bevel 112. The driving component 2 directly acts on the support bevels 111 of the two limit members to drive the rotation of the support bevel 111 instead of acting on the sliding bevel 112, so that the rotation of the support bevel 111 is more stable; and it is ensured that the sliding bevel 112 can slide more stably on the battery exchange platform body 10. In particular, when the sliding slope 112 of the front limiter 11 and the rear limiter 12 is set to slide forward, when the flexible cavity 21 is deflated but not enough to turn the front limiter 11 and the rear limiter 12 into a plane, the front limiter 11 and the rear limiter 12 can be pressed into a plane as the wheel rolls, thereby effectively reducing the bumpy feeling when the vehicle passes through the limiter 1, greatly improving the experience. In this embodiment, preferably, the sliding slope 112 of the front limiter 11 and the sliding slope 112 of the rear limiter 12 both slide forward along the driving direction of the vehicle. In this way, when the flexible cavity 21 is deflated and the pulling force on the front limiter 11 or the rear limiter 12 is not enough to turn the front limiter 11 or the rear limiter 12 into a plane, when the wheel moves forward, the front limiter 11 and the rear limiter 12 can also be turned into a plane under the action of the wheel, so that there is no bumpy feeling when the vehicle passes through the limiter 1, and the experience is the best.

[0088] Of course, in other embodiments, the support slope 111 of the front limiter 11 is close to the support slope 111 of the rear limiter 12, and when the flexible cavity 21 is inflated or deflated, the sliding slope 112 of the front limiter 11 and the sliding slope 112 of the rear limiter 12 slide in opposite directions. The two flexible cavities 21 are symmetrically arranged and respectively connected to the support slopes 111 of the front limiter 11 and the rear limiter 12, and the setting directions of the front limiter 11 and the rear limiter 12 are opposite, that is, the two support slopes 111 of the front limiter 11 and the rear limiter 12 are relatively arranged and used to limit the two movement trends of the vehicle's wheels forward and backward. The drive assembly 2 directly acts on the support slopes 111 of the two limiters and is used to limit the two movement trends of the vehicle's wheels forward and backward, thereby achieving precise positioning, further avoiding vehicle displacement during battery replacement operations, and greatly improving the stability of the wheel positioning device.

[0089] After the flexible cavity 21 of the limit device 1 is deflated, the upper surface of the limit device 1 is located on the same plane as the upper surface of the battery swap platform body 10. By deflation of the flexible cavity 21, the flexible cavity 21 drives the limit member to rotate downward, so that the upper surface of the limit device 1 and the upper surface of the battery swap platform body 10 can be located on the same horizontal plane, so that the vehicle passes through the limit device 1 without any bumps, and the experience is optimal. Of course, in other embodiments, the drive assembly 2 can drive the limit member to rotate downward to slightly below or slightly above the upper surface of the battery swap platform body 10.

[0090] The cross-sectional shape of the flexible cavity 21 after being filled with air is fan-shaped and has two connecting planes, and the two connecting planes are respectively connected to the supporting inclined plane 111 and the battery swap platform body 10. The flexible cavity 21 is respectively connected to the supporting inclined plane 111 and the battery swap platform body 10 through two connecting planes, so that the connection area between the flexible cavity 21 and the supporting inclined plane 111 and the battery swap platform body 10 is large, and the stability is higher when the driving limiter rotates. At the same time, the cross-sectional shape of the flexible cavity 21 after being filled with air is fan-shaped, so that the limiter can rotate smoothly up or down, and the wheel abutment limit is more stable.

[0091] In one embodiment, the flexible cavity 21 is an accordion airbag. When the flexible cavity 21 is filled with air, a preset angle is formed between the two connecting planes, and the non-linear side of the flexible cavity 21 is an accordion fold. After being filled with air, a preset angle is formed between the two connecting planes, so that the angle between the supporting slope 111 and the battery exchange platform body 10 is constant, so that the supporting slope 111 can limit the wheel at a preset angle to achieve precise positioning. At the same time, the flexible cavity 21 can be inflated and opened or deflated and contracted through the accordion folds, which is conducive to deformation and contraction, occupies a small space, has a simple structure, and is low in cost.

[0092] A downwardly recessed accommodating cavity 101 is provided at the installation position of the battery swap platform body 10 corresponding to the flexible cavity 21, and the accommodating cavity 101 is used to accommodate the deflated flexible cavity 21. After the flexible cavity 21 is deflated, the flexible cavity 21 will be located in the accommodating cavity 101 and will not protrude from the upper surface of the battery swap platform body 10, so that the drive assembly 2 can rotate the drive limit device 1 downward, so that the upper surface of the limit device 1 and the upper surface of the battery swap platform body 10 can be located on the same horizontal plane, so that the vehicle passes through the limit device 1 without any bumps. At the same time, the accommodating cavity 101 can also be used to protect the flexible cavity 21 and extend the service life of the flexible cavity 21; and the overall space occupied by the drive assembly 2 is very small.

[0093] In this embodiment, the length of the support slope 111 along the direction of vehicle travel is greater than the length of the accommodating chamber 101 along the direction of vehicle travel. After the flexible cavity 21 is deflated, the flexible cavity 21 will be located in the accommodating chamber 101, so that the support slope 111 will be flattened and supported against the upper surface of the battery swap platform body 10, and the support slope 111 will be used to shield the accommodating chamber 101 and protect the flexible cavity 21; at the same time, the support slope 111 will not fall into the accommodating chamber 101, ensuring that the wheel will not feel bumpy due to the accommodating chamber 101. Of course, in other embodiments, the length of the support slope 111 and the sliding slope 112 along the direction of vehicle travel is greater than the length of the accommodating chamber 101 along the direction of vehicle travel, and the limit device 1 is used to shield the accommodating chamber 101 through the support slope 111 and the sliding slope 112.

[0094] In this embodiment, a roller is provided on one side of the sliding slope 112 away from the supporting slope 111. The sliding slope 112 is supported against the battery swap platform body 10 by the roller, and the roller slides on the battery swap platform body 10, so that the sliding slope 112 is configured to be slidably connected to the battery swap platform body 10. The roller facilitates the sliding slope 112 to slide on the battery swap platform body 10, and the stability is higher.

[0095] In this embodiment, the battery swap platform body 10 is provided with a slide groove 102 corresponding to the sliding path of the sliding slope 112, and the slide groove 102 is connected to the accommodating cavity 101; after the flexible cavity 21 is deflated, the sliding slope 112 and the supporting slope 111 are accommodated in the slide groove 102 and the accommodating cavity 101, so that the upper surfaces of the sliding slope 112 and the supporting slope 111 are flush with the upper surface of the battery swap platform body 10. The sliding slope 112 slides in the slide groove 102 through the roller, and the slide groove 102 can limit the sliding of the sliding slope 112, effectively avoiding the displacement and dislocation of the sliding slope 112 during the sliding process, and greatly improving the stability of the wheel alignment device. At the same time, the space through the slide groove 102 and the accommodating cavity 101 is used to accommodate the sliding slope 112 and the supporting slope 111, so that the deflation of the flexible cavity 21 will drive the limiter to rotate downward, so that the upper surface of the limit device 1 can be flush with the upper surface of the battery exchange platform body 10, and the vehicle can pass through the limit device 1 without any bumps, and the experience is optimal.

[0096] In this embodiment, the two limiting members are the front limiting member 11 and the rear limiting member 12. The supporting inclined surface 111 and the sliding inclined surface 112 of the rear limiting member 12 and the supporting inclined surface 111 and the sliding inclined surface 112 of the front limiting member 11 are sequentially arranged on the battery swap platform body 10 along the driving direction of the vehicle. The two flexible cavities 21 are respectively connected to the two supporting inclined surfaces 111. The front limiting member 11 is used to limit the forward movement trend of the vehicle's wheels through the supporting inclined surface 111, and the rear limiting member 12 is used to limit the backward movement trend of the vehicle's wheels through the sliding inclined surface 112. The front limiting member 11 and the rear limiting member 12 are arranged on the battery swap platform body 10 on the same side, which is convenient for installation and arrangement. The wheels of the vehicle are limited by the supporting inclined surface 111 of the front limiting member 11 and the sliding inclined surface 112 of the rear limiting member 12 to achieve precise positioning and avoid vehicle displacement during battery swap operation.

[0097] In one embodiment, a ball or roller is provided on the sliding slope 112 of the rear limiter 12. When positioning the wheel, the sliding slope 112 of the rear limiter 12 is used to limit the backward movement trend of the wheel of the vehicle. The ball or roller facilitates the movement of the wheel on the sliding slope 112, which is convenient for adjusting the wheel to achieve precise positioning. Of course, a ball or roller can also be provided on the supporting slope 111 of the front limiter 11. When positioning the wheel, the supporting slope 111 of the front limiter 11 is used to limit the forward movement trend of the wheel of the vehicle. The ball or roller facilitates the movement of the wheel on the supporting slope 111, which is convenient for adjusting the wheel to achieve precise positioning.

[0098] In other embodiments, the sliding slope 112 of the rear limiter 12 is provided with a roller whose axis is perpendicular to the direction of travel of the vehicle. When positioning the wheel, the sliding slope 112 of the rear limiter 12 is used to limit the backward movement trend of the vehicle wheel. The roller whose axis is perpendicular to the direction of travel of the vehicle facilitates the wheel to move forward and backward on the sliding slope 112, which is convenient for adjusting the wheel to achieve precise positioning. Of course, the supporting slope 111 of the front limiter 11 may also be provided with a roller whose axis is perpendicular to the direction of travel of the vehicle. When positioning the wheel, the supporting slope 111 of the front limiter 11 is used to limit the forward movement trend of the vehicle wheel. The roller whose axis is perpendicular to the direction of travel of the vehicle facilitates the wheel to move forward and backward on the supporting slope 111, which is convenient for adjusting the wheel to achieve precise positioning.

[0099] The cross section of the limiter along the front and rear direction of the vehicle is triangular, so that the limiter protruding from the upper surface of the battery swap platform body 10 will be inclined toward the wheel, and the inclined surface has a limiting effect on the wheel; at the same time, it is convenient for the support inclined surface 111 to rotate downward when the wheel passes through the limiter, which is very convenient to use.

[0100] In this embodiment, the limiting device 1 also includes two positioning members 13, both of which are used to be installed on the battery swap platform body 10 and protrude from the upper surface of the battery swap platform body 10, and the two positioning members 13 are respectively used to limit the two movement trends of the vehicle's wheels to the left and the wheels to the right, so that the vehicle's wheels are limited between the two positioning members 13. The two movement trends of the vehicle's wheels to the left and the wheels to the right are limited by the two positioning members 13, and the two movement trends of the vehicle's wheels forward and the wheels backward are limited by the two limiting members, thereby realizing the limitation of the movement trend of the wheels to the surroundings, greatly improving the precise positioning of the vehicle and avoiding the displacement of the vehicle during the battery swap operation.

[0101] In one embodiment, the limiting device 1 is installed at the position where the front wheel of the corresponding vehicle stops. In another embodiment, the limiting device 1 can be installed at the position where the rear wheel of the corresponding vehicle stops. Of course, there can be multiple limiting devices 1, and multiple limiting devices 1 are respectively installed at the positions where the front wheel and rear wheel of the corresponding vehicle stop.

[0102] Example 2

[0103] like Figure 8 As shown, the embodiment of the present invention further discloses a vehicle positioning control method, which is used in the battery swap platform as described above. The vehicle positioning control method includes the following steps:

[0104] Step 101. Before the vehicle enters the battery swapping position of the battery swapping platform body 10, the flexible cavity 21 of the rear limit piece 12 corresponding to the front wheel parking position is controlled to be deflated to drive the inclination angle between the supporting slope 111 of the rear limit piece 12 and the battery swapping platform body 10 to decrease, so that the vehicle can pass over the rear limit piece 12; the flexible cavity 21 of the front limit piece 11 corresponding to the front wheel parking position is controlled to be inflated or kept inflated, so that the inclination angle between the supporting slope 111 of the front limit piece 11 and the battery swapping platform body 10 becomes larger, thereby limiting the forward movement trend of the vehicle.

[0105] In one embodiment, the wheel alignment device is installed at the position where the front wheel of the corresponding vehicle is parked. Before the front wheel of the vehicle enters the corresponding front wheel parking position, the flexible cavity 21 connected to the rear limiter 12 is controlled to be deflated, the overall volume of the flexible cavity 21 becomes smaller, the sliding slope 112 moves in the direction away from the supporting slope 111, and the supporting slope 111 rotates downward on the battery swap platform body 10 through the rotating end, thereby reducing the height of the rear limiter 12 protruding from the upper surface of the battery swap platform body 10, so that when the front wheel of the vehicle passes over the rear limiter 12 and enters the wheel alignment device, the bumpy feeling is effectively reduced, and the experience is good. At the same time, the flexible cavity 21 of the front limiter 11 is controlled to be inflated or kept inflated, the overall volume of the flexible cavity 21 becomes larger or remains large, and the height of the front limiter 11 protruding from the upper surface of the battery swap platform body 10 is maintained, the forward movement trend of the vehicle is limited, and the front wheel of the vehicle is accurately positioned. The vehicle is positioned by inflating the flexible cavity 21 or keeping it inflated. Whether the positioning is achieved is determined by whether the flexible cavity 21 reaches a force balance. During the positioning process, the gas can absorb part of the force through volume compression, so that the force of the front limiter 11 on the wheel is softer and less likely to cause impact, which greatly improves the experience of the driver and passengers in the vehicle; driving through the flexible cavity 21 has the advantages of simple control, good flexibility and high stability, and can effectively achieve precise positioning of the front wheels of the vehicle; at the same time, using the flexible cavity 21 as the driving component 2, it occupies less space when not inflated, has a simple structure and low cost.

[0106] The vehicle positioning control method further includes step 102:

[0107] Step 102: After the vehicle reaches the battery swapping point of the battery swapping platform body 10, the flexible cavity 21 of the rear limit piece 12 corresponding to the front wheel parking position is controlled to inflate to drive the inclination angle between the supporting slope 111 of the rear limit piece 12 and the battery swapping platform body 10 to increase, thereby positioning the front wheel.

[0108] In this step, the vehicle is positioned by inflating the flexible cavity 21 of the rear limiter 12. Whether the positioning is achieved is determined by whether the flexible cavity 21 reaches a force balance. During the positioning process, the gas can absorb part of the force through volume compression, so that the force of the rear limiter 12 on the wheel is relatively gentle and not easy to produce impact, which greatly improves the experience of the driver and passengers in the vehicle. The overall volume of the flexible cavity 21 becomes larger, so that the sliding slope 112 moves toward the direction close to the supporting slope 111, and the supporting slope 111 rotates upward on the battery swap platform body 10 by rotating the end, and the rear limiter 12 protrudes from the height of the upper surface of the battery swap platform body 10, and the front limiter 11 always maintains the height of the upper surface of the battery swap platform body 10. The front limit member 11 and the rear limit member 12 are used to limit the two movement trends of the vehicle's wheels forward and backward respectively, so that the vehicle's wheels are limited between the front limit member 11 and the rear limit member 12, to ensure that the front wheels of the vehicle will not shift during the battery swap operation. It has the advantages of simple control, good flexibility and high stability, and can achieve precise positioning of the vehicle's front wheels to avoid vehicle displacement during the battery swap operation.

[0109] The vehicle positioning control method further includes step 103:

[0110] Step 103: Before the vehicle drives out of the battery swap platform body 10, control the flexible cavities 21 of the front limit piece 11 and the rear limit piece 12 corresponding to the front wheel parking position to deflate, so as to drive the supporting inclined surfaces 111 of the front limit piece 11 and the rear limit piece 12 to have a smaller inclination angle with the battery swap platform body 10, so that the vehicle can pass over the front limit piece 11 and the rear limit piece 12.

[0111] In this step, the flexible cavity 21 connected to the front limiter 11 and the rear limiter 12 is controlled to be deflated, the overall volume of the flexible cavity 21 becomes smaller, the sliding slope 112 moves in the direction away from the supporting slope 111, and the supporting slope 111 rotates downward on the battery swap platform body 10 by rotating the end, thereby reducing the height of the front limiter 11 and the rear limiter 12 protruding from the upper surface of the battery swap platform body 10, so that when the front and rear wheels of the vehicle pass the front limiter 11 and the rear limiter 12 at the corresponding front wheel parking position, the bumpy feeling is effectively reduced, and the experience is good. At the same time, by reducing the height of the rear limiter 12 protruding from the upper surface of the battery swap platform body 10, when the front wheel of the next vehicle passes the rear limiter 12 and enters the wheel alignment device, the bumpy feeling is effectively reduced, and the experience is good, and it occupies less space, has a simple structure, and is low in cost.

[0112] like Fig. 9 As shown, the vehicle positioning control method further includes step 104:

[0113] Step 104, before the vehicle enters the battery swapping point of the battery swapping platform body 10, control the flexible cavities 21 of the front limit piece 11 and the rear limit piece 12 corresponding to the rear wheel parking position to deflate, so as to drive the supporting inclined surfaces 111 of the front limit piece 11 and the rear limit piece 12 to have a smaller inclination angle with the battery swapping platform body 10, so that the vehicle can pass over the rear limit piece 12 and the front limit piece 11.

[0114] In another embodiment, the wheel alignment device is installed at the position corresponding to the rear wheel parking position of the vehicle. The flexible cavity 21 connected to the front limiter 11 and the rear limiter 12 is controlled to be deflated, the overall volume of the flexible cavity 21 becomes smaller, the sliding slope 112 moves in the direction away from the supporting slope 111, and the supporting slope 111 rotates downward on the battery swap platform body 10 through the rotating end, thereby reducing the height of the front limiter 11 and the rear limiter 12 protruding from the upper surface of the battery swap platform body 10, so that when the front wheels of the vehicle pass the front limiter 11 and the rear limiter 12 corresponding to the rear wheel parking position, the bumpy feeling is effectively reduced, and the experience is good; at the same time, when the rear wheels of the vehicle pass the rear limiter 12 corresponding to the rear wheel parking position, the bumpy feeling is effectively reduced, and the experience is good, and it occupies less space, has a simple structure, and is low in cost.

[0115] The vehicle positioning control method further includes step 105:

[0116] Step 105: After the vehicle reaches the battery swapping point of the battery swapping platform body 10, the flexible cavities 21 of the front limit members 11 and the rear limit members 12 corresponding to the rear wheel parking positions are controlled to be inflated, so as to drive the supporting inclined surfaces 111 of the front limit members 11 and the rear limit members 12 to increase the inclination angle with the battery swapping platform body 10, thereby positioning the vehicle.

[0117] In this step, the flexible cavity 21 connected to the front limiter 11 and the rear limiter 12 is controlled to be inflated to achieve positioning of the vehicle. Whether the positioning is achieved is determined by whether the flexible cavity 21 reaches a force balance. During the positioning process, the gas can absorb part of the force through volume compression, so that the force of the front limiter 11 and the rear limiter 12 on the wheel is relatively soft and not easy to produce impact, which greatly improves the experience of the driver and passengers in the vehicle. The overall volume of the flexible cavity 21 becomes larger, the sliding slope 112 moves toward the direction close to the supporting slope 111, and the supporting slope 111 rotates upward on the battery swap platform body 10 by rotating the end, and the front limiter 11 and the rear limiter 12 both protrude above the height of the upper surface of the battery swap platform body 10. The front limit member 11 and the rear limit member 12 are used to limit the forward and backward movement trends of the rear wheels of the vehicle respectively, so that the rear wheels of the vehicle are limited between the front limit member 11 and the rear limit member 12, to ensure that the rear wheels of the vehicle will not shift during the battery swap operation. It has the advantages of simple control, good flexibility and high stability, and can achieve precise positioning of the rear wheels of the vehicle to avoid vehicle displacement during the battery swap operation.

[0118] The vehicle positioning control method further includes step 106:

[0119] Step 106. Before the vehicle drives out of the battery swapping platform body 10, the flexible cavities 21 of the front limit piece 11 and the rear limit piece 12 corresponding to the rear wheel parking position are controlled to deflate, so as to drive the supporting inclined surfaces 111 of the front limit piece 11 and the rear limit piece 12 to have a smaller inclination angle with the battery swapping platform body 10, so that the vehicle can pass over the rear limit piece 12 and the front limit piece 11.

[0120] In this step, the flexible cavity 21 connected to the front limit piece 11 and the rear limit piece 12 is controlled to be deflated, the overall volume of the flexible cavity 21 becomes smaller, the sliding slope 112 moves in the direction away from the supporting slope 111, and the supporting slope 111 rotates downward on the battery exchange platform body 10 through the rotating end, thereby reducing the height of the front limit piece 11 and the rear limit piece 12 protruding from the upper surface of the battery exchange platform body 10, so that when the rear wheel of the vehicle passes the front limit piece 11 corresponding to the rear wheel stop, the bumpy feeling is effectively reduced, and the user experience is good; at the same time, when the front wheel of the next vehicle passes the front limit piece 11 and the rear limit piece 12 corresponding to the rear wheel stop, and the rear wheel of the next vehicle passes the rear limit piece 12 corresponding to the rear wheel stop, the bumpy feeling is effectively reduced, and the user experience is good, and it occupies less space, has a simple structure, and is low in cost.

[0121] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A wheel positioning device for a battery swapping platform in a battery swapping station, characterized in that: It includes: A limiting device, the limiting device comprising two limiting members, both of which are rotatably connected to the battery swap platform body through a rotating end portion and protrude from the upper surface of the battery swap platform body, and the two limiting members are respectively used to limit the two movement trends of the vehicle's wheels forward and backward, so that the vehicle's wheels are limited between the two limiting members; The limiting member includes a sliding inclined surface and a supporting inclined surface which are rotatably connected, the supporting inclined surface is provided with the rotating end portion on a side away from the sliding inclined surface and is arranged to be rotatably connected to the battery exchange platform body, and the sliding inclined surface is provided with a side away from the supporting inclined surface and is arranged to be slidably connected to the battery exchange platform body; and, A driving assembly, wherein the driving assembly comprises two flexible cavities, wherein the two flexible cavities are respectively connected to the two limiting members, and the limiting member is rotated along the rotating end by inflating or deflating the flexible cavities, so that the inclination angles between the supporting inclined surface and the sliding inclined surface and the battery swap platform body change, so as to push the sliding inclined surface to slide forward in a direction away from the supporting inclined surface, so as to achieve that the limiting member is lowered in height protruding from the upper surface of the battery swap platform body when a vehicle passes by; The two limiting members are respectively a front limiting member and a rear limiting member, and the front limiting member and the rear limiting member are arranged on the upper surface of the battery exchange platform body front and back along the driving direction of the vehicle; The two flexible cavities are respectively connected to the supporting inclined surface of the front limiting member and the supporting inclined surface of the rear limiting member; The supporting inclined surface of the front limiter is close to the sliding inclined surface of the rear limiter, and when the flexible cavity is inflated or deflated, the sliding inclined surface of the front limiter and the sliding inclined surface of the rear limiter slide in the same direction; or, the supporting inclined surface of the front limiter is close to the supporting inclined surface of the rear limiter, and when the flexible cavity is inflated or deflated, the sliding inclined surface of the front limiter and the sliding inclined surface of the rear limiter slide in opposite directions; A downwardly recessed accommodating cavity is provided at the installation position of the battery exchange platform body corresponding to the flexible cavity, and the accommodating cavity is used to accommodate the flexible cavity after being deflated.

2. The wheel alignment device according to claim 1, characterized in that: After the flexible cavity is deflated, the upper surface of the limiting device and the upper surface of the battery exchange platform body are located on the same plane.

3. The wheel alignment device according to claim 2, characterized in that: The cross-sectional shape of the flexible cavity after being filled with air is fan-shaped and has two connecting planes, and the two connecting planes are respectively connected to the supporting slope and the battery exchange platform body.

4. The wheel alignment device according to claim 3, characterized in that: The flexible cavity is an accordion airbag. After the flexible cavity is filled with air, a preset angle is formed between the two connecting planes, and the non-linear side of the flexible cavity is an accordion fold.

5. The wheel alignment device according to claim 2, characterized in that: A roller is arranged on one side of the sliding inclined surface away from the supporting inclined surface.

6. The wheel alignment device according to claim 1, characterized in that: The length of the supporting inclined surface along the vehicle traveling direction is greater than the length of the accommodating cavity along the vehicle traveling direction.

7. The wheel alignment device according to claim 1, characterized in that: The battery exchange platform body is provided with a sliding groove corresponding to the sliding path of the sliding slope, and the sliding groove is connected to the accommodating cavity; After the flexible cavity is deflated, the sliding slope and the supporting slope are accommodated in the slide groove and the accommodating cavity, so that the upper surfaces of the sliding slope and the supporting slope are flush with the upper surface of the battery exchange platform body.

8. The wheel alignment device according to claim 1, characterized in that: The two limit members are respectively a front limit member and a rear limit member, the support inclined surface and the sliding inclined surface of the rear limit member and the support inclined surface and the sliding inclined surface of the front limit member are sequentially arranged on the battery exchange platform body along the driving direction of the vehicle, and the two flexible cavities are respectively connected to the two support inclined surfaces; The front limiting member is used to limit the forward movement tendency of the vehicle wheels through the supporting inclined surface, and the rear limiting member is used to limit the backward movement tendency of the vehicle wheels through the sliding inclined surface.

9. The wheel alignment device according to claim 8, characterized in that: The sliding inclined surface of the rear limiting member is provided with a ball or a roller.

10. The wheel alignment device according to claim 9, characterized in that: The sliding slope of the rear limiter is provided with a roller whose axis is perpendicular to the driving direction of the vehicle.

11. The wheel alignment device according to claim 1, characterized in that: The cross section of the limiting member along the front-rear direction of the vehicle is triangular.

12. A battery swap platform, characterized in that: It comprises a wheel positioning device as claimed in any one of claims 1 to 11, wherein the limiting device is installed at a position corresponding to the parking position of the wheel of the vehicle.

13. A vehicle positioning control method, characterized in that: It is used in the battery replacement platform as claimed in claim 12, and the vehicle positioning control method comprises the following steps: Before the vehicle enters the battery swapping platform body, the flexible cavity of the rear limiter corresponding to the front wheel parking position is controlled to deflate to drive the inclination angle between the supporting inclined surface of the rear limiter and the battery swapping platform body to decrease, so that the vehicle can pass over the rear limiter; The flexible cavity of the front limit piece corresponding to the front wheel parking position is controlled to be inflated or remain inflated so that the inclination angle between the supporting slope of the front limit piece and the battery exchange platform body becomes larger, thereby limiting the forward movement trend of the vehicle.

14. The vehicle positioning control method according to claim 13, characterized in that: After the vehicle reaches the battery exchange point of the battery exchange platform body, the flexible cavity of the rear limit member corresponding to the front wheel parking position is controlled to inflate to drive the inclination angle between the supporting slope of the rear limit member and the battery exchange platform body to increase, thereby positioning the front wheel.

15. The vehicle positioning control method according to claim 13, characterized in that: The vehicle positioning control method further includes: Before the vehicle drives out of the battery exchange platform body, the flexible cavities of the front limit member and the rear limit member corresponding to the front wheel parking position are controlled to deflate, so as to drive the inclination angles between the supporting slopes of the front limit member and the rear limit member and the battery exchange platform body to become smaller, so that the vehicle can pass over the front limit member and the rear limit member.

16. The vehicle positioning control method according to any one of claims 13 to 15, characterized in that: The vehicle positioning control method further includes: Before the vehicle enters or exits the battery exchange platform body's battery exchange position, the flexible cavities of the front limit member and the rear limit member corresponding to the rear wheel parking position are controlled to deflate, so as to drive the inclination angles between the supporting slopes of the front limit member and the rear limit member and the battery exchange platform body to become smaller, so that the vehicle can pass over the rear limit member and the front limit member.

17. The vehicle positioning control method according to claim 16, characterized in that: The vehicle positioning control method further includes: After the vehicle reaches the battery exchange point of the battery exchange platform body, the flexible cavities of the front limit member and the rear limit member corresponding to the rear wheel parking position are controlled to inflate, so as to drive the inclination angle between the supporting inclined surfaces of the front limit member and the rear limit member and the battery exchange platform body to increase, thereby positioning the vehicle.

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