electric vehicles

Abstract

This disclosure relates to an electric vehicle, which may include a first plate-shaped platform, a second plate-shaped platform, wheels, a motor disposed within the wheels, a power supply assembly for powering the electric vehicle, a first connecting arm assembly disposed opposite to both ends of a motor shaft, at least one sensor, and at least one controller. Each of the two opposite ends of the motor shaft is fixed to a mounting platform, and each mounting platform includes two oppositely disposed connecting arms. The first arm assembly is fixedly connected to the mounting platform to fix the first plate-shaped platform to the motor shaft, and the second arm assembly is rotatably connected to the first arm assembly to allow the second plate-shaped platform to rotate relative to the first plate-shaped platform.

Description

Technical Field

[0001] This disclosure relates to the field of transportation technology, and in particular to an electric vehicle. Background Technology

[0002] Traditional electric unicycles are relatively small in size, making them easy to store and transport. Therefore, many people use them for short-distance transportation, such as commuting to and from work. Furthermore, after use, users can easily carry the electric unicycle with them, making it convenient to store in their office or room.

[0003] However, in traditional electric unicycles, the connecting arm of the pedal platform is directly connected to the motor shaft, resulting in poor connection stability. Summary of the Invention

[0004] Therefore, in order to address the above problems, it is necessary to provide an electric vehicle.

[0005] A first aspect of this disclosure provides an electric vehicle that may include a first plate-shaped platform including a first footrest surface and a first arm assembly fixed to the first plate-shaped platform; a second plate-shaped platform including a second footrest surface and a second arm assembly fixed to the second plate-shaped platform; a wheel assembly including a wheel, a motor positioned within the wheel, and motor shafts extending from both sides of the wheel; a battery assembly for powering the electric vehicle; at least one sensor for sensing the attitude of at least one of the first plate-shaped platform and the second plate-shaped platform and generating a corresponding attitude signal; and at least one controller communicatively connected to the motor and the at least one sensor for controlling the motor to drive the wheel according to the attitude signal.

[0006] Each of the two opposite ends of the motor shaft is fixed with a mounting platform, and each of the connecting arms has at least one substantially flat mounting surface.

[0007] Wherein, the first arm assembly is fixedly connected to the mounting platform so that the first plate-shaped platform is fixed together with the motor shaft, and the second arm assembly is rotatably connected to the first arm assembly so that the second plate-shaped platform is rotatable relative to the first plate-shaped platform;

[0008] The electric vehicle is configured to change between an unfolded state and a folded state. In the unfolded state, the wheel assembly is positioned substantially centrally between the first plate-shaped platform and the second plate-shaped platform, and the first step surface of the first plate-shaped platform and the second step surface of the second plate-shaped platform are oriented to be stepped on by the user's first and second feet, respectively. In the folded state, the first plate-shaped platform and the second plate-shaped platform are closer to each other than when they are in the unfolded state.

[0009] In the aforementioned electric vehicle, by setting mounting platforms at both ends of the motor shaft, it is convenient to fix the first arm assembly to the motor shaft, and each mounting platform has two connecting arms that connect to the first arm assembly, thereby improving the stability of the connection between the first arm assembly and the mounting platform.

[0010] A second aspect of this disclosure provides an electric vehicle, comprising:

[0011] A first plate-shaped platform and a second plate-shaped platform rotatably connected to the first plate-shaped platform, each of the first plate-shaped platform and the second plate-shaped platform having a stepping surface;

[0012] A wheel assembly, comprising a wheel, a motor positioned within the wheel, and motor shafts extending from both sides of the wheel;

[0013] Battery components that power the electric vehicle;

[0014] At least one sensor is used to sense the attitude of at least one of the first plate-shaped platform and the second plate-shaped platform and generate a corresponding attitude signal; and

[0015] At least one controller communicatively connected to the motor and the at least one sensor, which is used to control the motor to drive the wheel based on the attitude signal;

[0016] The motor shaft has at least one mounting platform at each end for fixing one of the first plate-shaped platform and the second plate-shaped platform, and one of the first plate-shaped platform and the second plate-shaped platform is indirectly fixed to the motor shaft by means of the at least one mounting platform.

[0017] The electric vehicle is configured to switch between an unfolded state and a folded state. In the unfolded state, the wheel assembly is positioned between a first plate-shaped platform and a second plate-shaped platform, and the foot surfaces of the first and second plate-shaped platforms are oriented to be stepped on by a user's first and second feet, respectively. In the folded state, the first and second plate-shaped platforms are closer to each other than when they are in the unfolded state. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments or conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of an electric vehicle in an unfolded state according to an embodiment of the present disclosure;

[0020] Figure 2 A schematic diagram of an electric vehicle in an intermediate state provided in one embodiment of this disclosure;

[0021] Figure 3 This is a schematic diagram of an electric vehicle in a folded state according to an embodiment of the present disclosure;

[0022] Figure 4 A schematic diagram of another electric vehicle in an unfolded state provided as an embodiment of this disclosure;

[0023] Figure 5 A side view of an electric vehicle provided according to an embodiment of this disclosure;

[0024] Figure 6 A cross-sectional view of an electric vehicle provided according to an embodiment of this disclosure;

[0025] Figure 7 A schematic diagram of the internal structure of a first plate-shaped platform and a second plate-shaped platform of an electric vehicle provided in an embodiment of this disclosure;

[0026] Figure 8 An exploded schematic diagram of an electric vehicle provided in one embodiment of this disclosure;

[0027] Figure 9 An exploded view of a partial structure of an electric vehicle provided in one embodiment of this disclosure;

[0028] Figure 10This is a schematic diagram of a wheel assembly with a mounting platform provided according to an embodiment of the present disclosure;

[0029] Figure 11 A side view of a mounting carrier for an electric vehicle provided in one embodiment of this disclosure;

[0030] Figure 12 An exploded view of another partial structure of an electric vehicle provided in one embodiment of this disclosure;

[0031] Figure 13 This is a schematic diagram of a cable management box provided in one embodiment of the present disclosure;

[0032] Figure label:

[0033] 10. Electric Vehicle. 100. First plate-shaped platform; 110. First foot pedal surface; 120. First arm assembly; 121. First arm; 1211. First axle hole; 1212. Third axle hole; 200. Second plate-shaped platform; 210. Second foot pedal surface; 220. Second arm assembly; 221. Second arm; 2211. Second axle hole; 2212. Limiting groove; 300. Wheel assembly; 310. Wheel; 320. Motor; 321. Motor shaft; 322. Nut; 400. Sensor; 500. Controller; 600. Battery assembly; 700. Installation platform; 710, connecting arm; 711, mounting surface; 720, perforation; 730, limiting groove; 740, limiting block; 800, rotating connector; 900, photoelectric switch; 1000, through hole; 1200, recess; 1300, first locking component; 1400, second locking component; 1500, support plate; 1510, support surface; 1600a, first cable; 1600b, second cable; 1700, cable storage box; 1710, cable tray; 1800, enclosure; 1810, baffle; G, horizontal ground. Detailed Implementation

[0034] To make the above-described objects, features, and advantages of this disclosure more apparent and understandable, specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this disclosure. However, this disclosure can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this disclosure. Therefore, this disclosure is not limited to the specific embodiments disclosed below.

[0035] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0038] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0040] Please see Figure 1 and Figure 6 One embodiment of this disclosure provides an electric vehicle 10, which may include a first plate-shaped platform 100 having a first footrest surface 110, a first arm assembly 120 fixed to the first plate-shaped platform 100, a second plate-shaped platform 200 having a second footrest surface 210, a second arm assembly 220 fixed to the second plate-shaped platform 200, a wheel assembly 300, a battery assembly 600, a sensor 400, and a controller 500. The wheel assembly 300 includes a wheel 310 and a motor 320 positioned within the wheel 310, wherein the motor shaft 321 of the motor 320 coincides with the central axis of the wheel 310 in the width direction. The battery assembly 600 is electrically connected to the controller 500 and is used to power the electric vehicle 10; the sensor 400 is used to sense the attitude (e.g., tilt angle data) of at least one of the first plate platform 100 and the second plate platform 200 and generate a corresponding attitude signal; the controller 500 is communicatively connected to the motor 320 and the sensor 400 respectively and is used to control the motor 320 to drive the wheel 310 according to the attitude signal.

[0041] Furthermore, there are no particular restrictions on the type of controller 500; it can also be referred to as a circuit board. The controller 500 is equipped with an MCU (which may integrate a CPU, memory, timer / calculator, and various I / O circuits, etc.), also known as a microcontroller. It can be replaced by a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), or a suitable combination of these devices / electronic control circuits to similarly perform the control functions of the electric vehicle 10. These control functions specifically include, for example, receiving attitude data of the electric vehicle 10 sensed by relevant sensors and generating drive signals for the wheel motors of the electric vehicle 10 based on this attitude data.

[0042] Furthermore, there are no particular restrictions on the type of the aforementioned sensor 400, as long as it can be used to measure changes in the attitude, orientation, tilt, or position of the foot platform. It is generally mounted on the circuit board 500 built into the electric vehicle 10 along with the aforementioned MCU. The sensor 400 can generally be an inertial measurement unit (IMU), preferably a six-axis gyroscope, which can integrate a three-axis gyroscope sensor (referred to as a gyroscope) and a three-axis accelerometer sensor (referred to as an accelerometer).

[0043] It is worth noting that the number of the aforementioned sensors can be one or more, preferably one, and the number of the aforementioned controllers can also be one or more, preferably one.

[0044] like Figures 8-10 As shown, each of the two opposite ends of the motor shaft 321 is fixed with a mounting platform 700, and each mounting platform 700 includes two oppositely arranged connecting arms 710. A first arm assembly 120 is fixedly connected to the mounting platform 700 by connecting to the two connecting arms 710, thereby fixing the first plate-shaped platform 100 to the motor shaft 321. A second arm assembly 220 is rotatably connected to the first arm assembly 120, allowing the second plate-shaped platform 200 to rotate relative to the first plate-shaped platform 100. In this embodiment, by providing mounting platforms 700 at both ends of the motor shaft 321, the fixation of the first arm assembly 120 to the motor shaft 321 is facilitated, and the fact that each mounting platform 700 has two connecting arms 710 connected to the first arm assembly 120 enhances the stability of the connection between the first arm assembly 120 and the mounting platform 700.

[0045] The electric vehicle 10 is configured to switch between an unfolded state and a folded state, allowing a user to ride or store the electric vehicle 10. For example... Figure 1 and Figure 4 As shown, in the deployed state, the wheels 310 are positioned substantially or substantially centered between the first plate-shaped platform 100 and the second plate-shaped platform 200, and the first pedal surface 110 and the second pedal surface 210 are oriented so that they can be stepped on by the user's first and second feet, respectively, so that the user can ride the electric vehicle 10 by stepping on the first pedal surface 110 and the second pedal surface 210, respectively. Figure 3As shown, in the folded state, the first plate-shaped platform 100 and the second plate-shaped platform 200 are closer to each other than when they are unfolded, thus making the electric vehicle 10 occupy less space and easier to store. Furthermore, the change between the unfolded and folded states of the electric vehicle 10 is achieved by rotating the second plate-shaped platform 200 relative to the first plate-shaped platform 100. Note that here, "generally or substantially centered" can mean centered or has a dimensional offset error of up to ±20% relative to centering.

[0046] It is understood that when the electric vehicle 10 is in the unfolded state, the user can ride the electric vehicle 10 by placing their first foot and second foot on the first footrest surface 110 and the second footrest surface 210 respectively. During the ride, the user can control the first plate platform 100 and the second plate platform 200 to change their posture by placing their first foot and second foot. At this time, the sensor 400 can sense the posture of at least one of the first plate platform 100 and the second plate platform 200 and transmit the posture signal to the controller 500. After receiving the posture signal, the controller 500 will control the motor 320 to run according to the posture signal to drive the wheel 310 accordingly. Thus, the user can control the operation of the wheel 310 by changing the posture of the first plate platform 100 and the second plate platform 200 during the ride of the electric vehicle 10. For example, when a user's first foot and second foot are respectively placed on the foot surfaces of the first plate platform 100 and the second plate platform 200, and the user is riding forward at a constant speed, if the first plate platform 100 is behind and the second plate platform 200 is in front, if the user wants to move backward, they can control the first plate platform 100 and the second plate platform 200 to tilt backward using their first and second feet. At this time, the sensor 400 will sense the changed posture of the first plate platform 100 and / or the second plate platform 200 and transmit the posture signal to the controller 500. The controller 500 will then control the motor 320 according to the posture signal, so that the motor 320 drives the wheel 310 backward.

[0047] In one embodiment, such as Figure 7As shown, the first arm assembly 120 includes two first arms 121 respectively connected to opposite sides of the first plate-shaped platform 100. The two first arms 121 are located on opposite sides of the wheel 310, and each first arm 121 is fixedly connected to a corresponding mounting platform 700 located on the same side of the wheel 310 as that first arm 121. That is, the first end of either of the two first arms 121 is fixedly connected to the first plate-shaped platform 100, and the second end of either of the two first arms 121 opposite to the first end is fixedly connected to a corresponding mounting platform 700 located on the same side of the wheel 310 as that first arm 121. The second arm assembly 220 includes two second arms 221 respectively connected to opposite sides of the second plate-shaped platform 200. The two second arms 221 are located on opposite sides of the wheel 310, and each second arm 221 is rotatably connected to a corresponding first arm 121 located on the same side of the wheel 310 as that second arm 221. That is, the first end of either of the two second arms 221 is fixedly connected to the second plate-shaped platform 200, and the second end of either of the two second arms 221 opposite to the first end is rotatably connected to a corresponding first arm 121 located on the same side of the wheel 310.

[0048] Optionally, each first arm 121 is fixedly connected to the mounting surface 711 of the two connecting arms 710 of the corresponding mounting platform 700 by screws.

[0049] Optionally, such as Figure 8 and Figure 12 As shown, each second arm 221 is rotatably connected to a corresponding first arm 121 located on the same side of the wheel 310 via a rotating connector 800. The first arm 121 has a first shaft hole 1211, and the corresponding second arm 221 has a second shaft hole 2211. The rotating connector 800 passes sequentially through the first shaft hole 1211 and the second shaft hole 2211, and is configured such that the first arm 121 or the second arm 221 mounted on the rotating connector 800 will not move axially relative to the rotating connector 800. For example, the rotating connector 800 is a pin. The rotating connector 800 is not coaxial with the motor shaft 321, thereby causing the axis of rotation between the second arm 221 and the corresponding first arm 121 to deviate from the motor shaft 321.

[0050] Furthermore, such as Figure 5As shown, the rotating connector 800 is located directly above the motor shaft 321, so that the rotation axis between the second arm 221 and a corresponding first arm 121 located on the same side of the wheel 310 is higher than the motor shaft 321. This allows the electric vehicle 10 to have the ground clearance of the first plate platform 100 and the second plate platform 200 as high as possible when the electric vehicle 10 is in the unfolded state and both the first plate platform 100 and the second plate platform 200 are parallel to the ground, thereby increasing the passability of the electric vehicle 10.

[0051] In one embodiment, such as Figure 9 and Figure 10 , Figure 11 As shown, the mounting platform 700 has a through hole 720 adapted to the motor shaft 321. The motor shaft 321 passes through the through hole 720, thereby fitting the mounting platform 700 onto the motor shaft 321. The mounting platform 700 also has a limiting groove 730 communicating with the through hole 720. A wedge-shaped limiting block 740 is embedded in the limiting groove 730, which is used to limit the rotation of the mounting platform 700 relative to the motor shaft 321. Specifically, the motor shaft 321 can be a non-circular shaft, that is, the cross-sectional profile of the motor shaft 321 can be non-circular. For example, in the embodiment shown, the motor shaft 321 can be a flat shaft, and the through hole 720 of the mounting platform 700 is adapted to the motor shaft 321. After the motor shaft 321 is passed through the through hole 720, a wedge-shaped fixing block can be embedded in the limiting groove 730 to increase the reliability of the mating between the mounting platform 700 and the motor shaft 321, so that the mounting platform 700 will not rotate relative to the motor shaft 321. Furthermore, the motor shaft 321 can be provided with threads. After the motor shaft 321 is passed through the through hole 720, a nut 322 can be tightened and fixed on the motor shaft 321, and the mounting platform 700 is abutted against the motor 320 to limit the axial movement of the mounting platform 700.

[0052] In one embodiment, when the external force applied to the electric vehicle 10 in its deployed state on a horizontal surface is removed to keep both the first foot surface 110 and the second foot surface 210 substantially parallel to the horizontal surface, one of the first plate platform 100 and the second plate platform 200 may spontaneously rotate in a first direction toward the horizontal surface, and the other of the first plate platform 100 and the second plate platform 200 may spontaneously rotate in a second direction opposite to the first direction toward the horizontal surface.

[0053] Optionally, such as Figure 5As shown, the overall weights of the first plate-shaped platform 100 and the second plate-shaped platform 200 are different, so that when the electric vehicle 10 is in the unfolded state on a horizontal ground and is not subjected to external forces, the first plate-shaped platform 100 and then the second plate-shaped platform 200 can rotate spontaneously at the same time. The heavier one of the first plate-shaped platform 100 and the second plate-shaped platform 200 will rotate spontaneously in the direction D1 closer to the horizontal ground, while the lighter one of the first plate-shaped platform 100 and the second plate-shaped platform 200 will rotate spontaneously in the direction D2 away from the horizontal ground.

[0054] In one embodiment, such as Figure 6 and Figure 7 As shown, the battery assembly 600 is installed on only one of the first plate platform 100 or the second plate platform 200. This makes the structure simpler and more compact, and also facilitates the arrangement of other components.

[0055] Furthermore, such as Figure 7 As shown, the battery assembly 600 is installed in the second plate-shaped platform 200, and the controller 500 is installed in the first plate-shaped platform 100. A first cable 1600a connects the battery assembly 600 and the controller 500, and a second cable 1600b connects the controller 500 and the motor 320. That is, the power supply is only connected to the controller 500 via the first cable 1600a, while the controller 500 is connected to both the power supply and the motor 320 via the second cable 1600b. Clearly, the controller 500 has more cables extending from it. Therefore, placing the controller 500 within the first plate-shaped platform 100, which is fixed to the motor shaft 321, instead of within the second plate-shaped platform 200, which is rotatable relative to the motor shaft 321, avoids interference with the rotation of the second plate-shaped platform 200 that might result from a larger number of cables extending from it, or the rotation itself that could negatively impact the lifespan of the cables.

[0056] Furthermore, the weight of the first plate-shaped platform 100 is less than the weight of the second plate-shaped platform 200. When the electric vehicle 10 is placed on the ground in the unfolded state and is not subjected to external force, the first plate-shaped platform 100 and the second plate-shaped platform 200 will rotate spontaneously at the same time. Due to its greater weight, the second plate-shaped platform 200 will eventually touch the ground, while the first plate-shaped platform 100 will tilt upwards away from the horizontal ground. This greatly facilitates the user's entry action. When entering the vehicle, the user can first step on the footing surface of the second plate-shaped platform 200 that is touching the ground, and then step on the footing surface of the first plate-shaped platform 100 that is away from the ground.

[0057] In some embodiments, such as Figure 1 As shown, cable storage boxes 1700 are provided on both sides of the wheel 310. The cable storage boxes 1700 are used for cables to be threaded through them for easy storage and organization.

[0058] Specifically, such as Figure 1 , Figure 7 as well as Figure 13 As shown, the cable storage box 1700 has a storage cavity on the side facing the wheel 310, and a cable threading groove 1710 is provided on each side of the cable storage box 1700, each of the cable threading grooves 1710 communicating with the storage cavity. Of the two cable threading grooves 1710, one is located near the first plate-shaped platform 100, and the other is located near the second plate-shaped platform 200. When the controller 500 is located within the first plate-shaped platform 100 and the battery assembly 600 is located within the second plate-shaped platform 200, the first cable 1600a connecting the controller 500 and the battery assembly 600 is led out from the first plate-shaped platform 100, passes through the cable groove 1710 near the first plate-shaped platform 100 into the storage cavity, and then exits through the cable groove 1710 near the second plate-shaped platform 200 before entering the second plate-shaped platform 200; the second cable 1600b connecting the controller 500 and the motor 320 is led out from the first plate-shaped platform 100, passes through the cable groove 1710 near the first plate-shaped platform 100 into the storage cavity, and then passes through the inner cavity of the motor shaft 321 into the motor 320. Preferably, the first cable 1600a connecting the controller 500 and the battery assembly 600 and the second cable 1600b connecting the controller 500 and the motor 320 are routed on both sides of the wheel 310, that is, the two cables are respectively stored in the cable storage boxes 1700 on both sides of the wheel 310.

[0059] Optionally, such as Figure 7 As shown, a photoelectric switch 900 is installed on the first plate-shaped platform 100. The photoelectric switch 900 is used to sense whether the user's foot is stepping on the first plate-shaped platform 100. The photoelectric switch 900 is electrically connected to the controller 500. When the photoelectric switch 900 senses that the user's foot is stepping on the second step surface 210 of the second plate-shaped platform 200, the controller 500 receives the sensing signal from the photoelectric switch 900 and controls the motor 320 to start. The electric vehicle 10 can also have a novice mode and an expert mode. In the skilled user mode, when the photoelectric switch 900 senses that the user's foot has stepped onto the first plate-shaped platform 100, the controller 500 will control the motor 320 to immediately drive the wheels 310, thus providing the user with a certain riding pleasure. In the novice mode, after the photoelectric switch 900 senses that the user's foot has stepped onto the first plate-shaped platform 100, the controller 500 will only control the motor 320 to drive the wheels 310 when the sensor 400 senses that the second plate-shaped platform 200 has been stepped onto to a roughly horizontal position, in order to prevent the user from losing balance and being unable to use the electric vehicle 10 normally.

[0060] Optionally, such as Figure 6 and Figure 7 As shown, one of the first plate-shaped platform 100 and the second plate-shaped platform 200 that does not have a battery assembly 600 installed has a through hole 1000 for a user to hold. Conversely, the one of the first plate-shaped platform 100 and the second plate-shaped platform 200 that has a battery assembly 600 installed does not have a through hole 1000 for a user to hold. For example, if the battery assembly 600 is located on the second plate-shaped platform 200, and the second plate-shaped platform 200 only has a recess 1200 for easy gripping, while the first plate-shaped platform 100 has the through hole 1000 for easy gripping, then not having the through hole 1000 on the second plate-shaped platform 200 avoids encroaching on the space for the battery assembly 600, allowing the battery assembly 600 to be made larger to maximize its energy storage capacity.

[0061] Optionally, the battery assembly 600 is installed on only one of the first plate-shaped platform 100 or the second plate-shaped platform 200, and the weight of the one with the battery assembly 600 installed is greater than the weight of the other. When the electric vehicle 10 is placed on the ground in the unfolded state and is not subjected to external force, the one of the first plate-shaped platform 100 and the second plate-shaped platform 200 with the battery assembly 600 will spontaneously rotate toward the horizontal ground until it abuts against the horizontal ground, and the one of the first plate-shaped platform 100 and the second plate-shaped platform 200 without the battery assembly 600 will rotate away from the horizontal ground and tilt relative to the horizontal ground.

[0062] In one embodiment, see Figure 5 When the electric vehicle 10 in its unfolded state is placed at an angle on a horizontal surface G so that one of the first plate-shaped platform 100 and the second plate-shaped platform 200 is tilted and oriented to suit a user's boarding action, the tilt angle C of the longitudinal axis A of the electric vehicle 10 in its unfolded state relative to the horizontal surface G can be 5° to 45°. The tilting of the electric vehicle 10 includes at least two cases: first, when the electric vehicle 10 is placed on a horizontal surface and is not affected by external forces, the electric vehicle 10 can tilt spontaneously; second, the electric vehicle 10 is placed on a horizontal surface and an external force is applied to it to tilt it.

[0063] For example, in such Figure 5In the illustrated embodiment, when the electric vehicle 10 is in its unfolded state and not affected by external forces, the plate-shaped platform 100 leans against the horizontal ground G, while the second plate-shaped platform 200 is suspended in the air. The angle between the first step surface 110 of the first plate-shaped platform 100 and the horizontal ground G can be considered as the angle of inclination of the longitudinal axis A of the electric vehicle 10 relative to the horizontal ground G when it is in its unfolded state. As shown in the figure, when the user gets on the vehicle, the first plate-shaped platform 100 maintains a suitable tilt angle C with the horizontal ground G, making it easy for the user to lift their first foot and place it on the first plate-shaped platform 100.

[0064] Understandably, a tilt angle C within the range of 5° to 45° is more conducive to the user's boarding operation. Conversely, when the tilt angle C is greater than 45°, it can prevent the angle between the user's first foot and the horizontal ground G from being too large, making it difficult to stand steadily and improving the safety of boarding operation. In addition, as shown in the figure, combined with the above, when the electric vehicle 10 is not affected by external forces and is in the unfolded state, the longitudinal axis A is tilted relative to the horizontal ground G. This means that one of the first plate platform 100 and the second plate platform 200 is closer to the horizontal ground G than the other. This can guide the user in performing the boarding action. As shown in the figure, compared to the second plate platform 200, the first plate platform 100 is closer to the horizontal ground G, thus guiding the user to step onto the first plate platform 100 first. It is understandable that, for users, the smaller the angle C of the longitudinal axis A of the electric vehicle 10 in the unfolded state relative to the horizontal ground G, such as when the angle C is close to zero in extreme cases, it means that the longitudinal axis A of the electric vehicle 10 is almost parallel to the horizontal ground G. It is difficult for users to intuitively and quickly judge which foot platform to step on first by visual inspection. That is, the angle C is set to be no less than 5° in order to ensure that the tilt of the longitudinal axis A of the electric vehicle 10 relative to the horizontal ground G is more obvious, so that users can quickly judge which of the two foot platforms is closer to the horizontal ground G when they want to get on the vehicle, thereby better guiding users to perform the getting on operation.

[0065] In other embodiments, when the electric vehicle 10 is tilted and in the unfolded state on the horizontal ground G, the first plate-shaped platform 100 may also be tilted only relative to the horizontal ground G without contacting the horizontal ground G, that is, the first plate-shaped platform 100 is suspended in the air and still has a certain distance from the horizontal ground G.

[0066] Furthermore, in some preferred embodiments, the tilt angle C of the longitudinal axis A of the electric vehicle 1010 relative to the horizontal ground G can be 10° to 30° to optimize the user's boarding experience.

[0067] More preferably, in some embodiments, the longitudinal axis A of the electric vehicle 10 is tilted at an angle C of approximately 15° relative to the horizontal ground G, to further optimize the user's boarding and alighting experience.

[0068] When at least one of the first plate-shaped platform 100 and the second plate-shaped platform 200 is rotated to change the electric vehicle 10 from an unfolded state to a folded state, each of the first plate-shaped platform 100 and the second plate-shaped platform 200 has a unique rotation path. That is, when the electric vehicle 10 is in the unfolded state, for either the first plate-shaped platform 100 or the second plate-shaped platform 200, the user can only rotate it in one direction to bring the first plate-shaped platform 100 and the second plate-shaped platform 200 closer to each other.

[0069] like Figure 1 , Figure 2 as well as Figure 3 As shown, initially, the electric vehicle 10 is in an unfolded state. Then, it is folded in a single direction, resulting in an intermediate state. Finally, the electric vehicle 10 is folded into its folded state. This intermediate state refers to the state where the electric vehicle 10 is neither unfolded nor folded during the folding process. In this embodiment, by configuring the electric vehicle 10 with a unique folding path, it facilitates the user's identification of the first footing surface 110 and the second footing surface 210, preventing the user from stepping on the bottom surfaces of the first and second platform 100 when preparing to ride, thus avoiding a poor user experience. Furthermore, configuring the electric vehicle 10 with a unique folding path also ensures its stability in the unfolded state, preventing the unfolded state from being disrupted by the user's first and second footsteps on the first and second platform 100 and 200.

[0070] In one embodiment, the first plate-shaped platform 100 has a first top surface and a first bottom surface opposite to the first top surface, and the second plate-shaped platform 200 has a second top surface and a second bottom surface opposite to the second top surface. The first top surface is the footrest surface of the first plate-shaped platform 100, and the second top surface is the footrest surface of the second plate-shaped platform 200. When at least one of the first plate-shaped platform 100 and the second plate-shaped platform 200 is rotated to change the electric vehicle 10 from an unfolded state to a folded state, the first top surface and the second top surface can approach each other face-to-face, while the first bottom surface and the second bottom surface cannot approach each other face-to-face. This allows the electric vehicle 10 to be configured with a unique folding path, making it easier for the user to determine the front and back of the first plate-shaped platform 100 and the second plate-shaped platform 200, and preventing the user from stepping on the first bottom surface and the second bottom surface of the electric vehicle 10 when preparing to ride, thus avoiding a poor user experience.

[0071] In one embodiment, such as Figure 12 As shown, the first arm assembly 120 and the second arm assembly 220 each have a first locking member 1300 positioned on the first arm assembly 120 and a second locking member 1400 positioned on the second arm assembly 220. The first locking member 1300 and the second locking member 1400 are configured to cooperate in performing a user-revocable locking operation to lock the electric vehicle 10 in its current state, whether it is in an unfolded or folded state. The first locking member 1300 and the second locking member 1400 provide auxiliary limiting for the electric vehicle 10, preventing the first plate-shaped platform 100 from rotating freely relative to the second plate-shaped platform 200 when it is in the unfolded or folded state.

[0072] Optionally, the first locking member 1300 includes elastic post assemblies located on the two first arms 121 of the first arm assembly 120, and the second locking member 1400 includes limiting grooves located on the two second arms 221. The elastic post assemblies on the first arms 121 and the limiting grooves on the second arms 221 located on the same side of the wheel 310 cooperate with each other to lock the electric vehicle 10 in the current state when it is in the unfolded or folded state. Specifically, under the action of elastic force, the end of the elastic post assembly facing the second arm 221 on the same side of the wheel 310 tends to move closer to the second arm 221. When the electric vehicle 10 is in the unfolded or folded state, the end of the elastic post assembly facing the second arm 221 on the same side of the wheel 310 is embedded in the corresponding limiting groove to limit the first arm 121 and the second arm 221 on the same side of the wheel 310.

[0073] In one embodiment, such as Figure 5 As shown, when the electric vehicle 10 is in the deployed state, the second arm assembly 220 abuts against the motor shaft 321 to confine the electric vehicle 10 to the deployed state. Specifically, as... Figure 8 As shown, each first arm 121 of any first arm assembly 120 is provided with a third shaft hole 1212, and the opposite ends of the motor shaft 321 pass through the corresponding third shaft hole 1212. Each of the two second arms 221 of the second arm assembly 220 is provided with a limiting groove 2212, located on the side of the second arm 221 facing the motor shaft 321. During the process of the electric vehicle 10 changing from a folded state to an unfolded state, the second arm 221 rotates continuously relative to the first arm 121 in a single rotational direction until the end of the motor shaft 321 abuts against the limiting groove 2212. At this point, the second arm 221 can no longer rotate relative to the first arm 121, and the electric vehicle 10 is in the unfolded state. That is, the limiting fit between the limiting groove 2212 and the motor shaft 321 keeps the electric vehicle 10 in the unfolded state. Furthermore, the limiting fit between the electric vehicle 10 and the motor shaft 321 also ensures that the electric vehicle 10 has a unique folding path.

[0074] It is understandable that in this electric vehicle 10, the hardness of the motor shaft 321 is greater than that of the first arm 121 and the second arm 221. In other words, the hardness of the first arm 121 and the second arm 221 is relatively low. If the electric vehicle 10 is kept in the deployed state by the first arm 121 and the second arm 221 abutting against each other, both arms are prone to wear simultaneously. Once wear occurs, both arms 121 and 221 need to be replaced, which undoubtedly increases the maintenance cost of the electric vehicle 10. However, in this embodiment, the electric vehicle 10 is kept in the deployed state by the motor shaft 321 abutting against the second arm 221. Because the motor shaft 321 has higher hardness, even if wear occurs due to the contact between the motor shaft 321 and the second arm 221, usually only the second arm 221 will wear. Therefore, only the second arm 221 needs to be replaced, which undoubtedly reduces the cost of maintenance and replacement.

[0075] In one embodiment, such as Figure 7As shown, the second arm assembly 220 is rotatably connected to the first arm assembly 120 via a rotating connector 800. When the electric vehicle 10 is in the unfolded state, the axis of the rotating connector 800 lies simultaneously in the plane containing the top surface of the first plate-shaped platform 100 and the plane containing the top surface of the second plate-shaped platform 200. This arrangement allows the first step surface 110 of the first plate-shaped platform 100 and the second step surface 210 of the second plate-shaped platform 200 of the electric vehicle 10 in the folded state to close together, minimizing the space occupied by the electric vehicle 10 in the folded state.

[0076] Furthermore, the rotating connector 800 is a pin, and the axis of the pin is parallel to the motor shaft 321.

[0077] In one embodiment, such as Figure 3 As shown, a support plate 1500 is provided on one side of the rolling surface of the wheel 310. The support plate 1500 is fixedly connected to the motor shaft 321. The support plate 1500 is used to support the electric vehicle 10 as a whole when the electric vehicle 10 is in a folded state. That is, when the electric vehicle 10 is in a folded state, the support plate 1500 can act as a support member to contact the placement surface and place the electric vehicle 10 upright. The placement surface can be a horizontal ground, a horizontal table, etc.

[0078] Furthermore, the side of the support plate 1500 facing away from the wheel 310 is the support surface 1510. When the electric vehicle 10 is in a folded state, the second plate-shaped platform 200 is rotated to abut against the first plate-shaped platform 100. At this time, the second plate-shaped platform 200 is located on the side of the support plate 1500 facing away from the support surface 1510. When the electric vehicle 10 is in a folded state, the user can make the support surface 1510 fit against the placement surface to put the electric vehicle 10 into a stowed state. At this time, the wheel 310, the first plate-shaped platform 100, and the second plate-shaped platform 200 are all located above the support plate 1500, and the electric vehicle 10 is roughly in an upright state. Moreover, when the electric vehicle 10 is placed upright by the support plate 1500, the center line of gravity of the electric vehicle 10 falls on the support plate 1500 to ensure the stability of the electric vehicle 10 when placed upright.

[0079] Furthermore, since the first plate-shaped platform 100 and the second plate-shaped platform 200 are not symmetrically arranged about the support plate 1500 when the electric vehicle 10 stands on a horizontal surface via the support plate 1500, the first plate-shaped platform 100 and the second plate-shaped platform 200 are tilted so that the center line of gravity of the entire electric vehicle 10 falls on the support plate 1500. For example, when the electric vehicle 10 stands on the ground via the support plate 1500, the angle between the first plate-shaped platform 100 and the normal to the support surface 1510 is in the range of 3°-7°. Preferably, when the electric vehicle 10 stands on the ground via the support plate 1500, the angle between the first plate-shaped platform 100 and the normal to the support surface 1510 is 5°.

[0080] Optionally, such as Figure 1 As shown, a protective member 1800 is wrapped around the wheel 310. A support connection is connected to the side of the first plate-shaped platform 100 facing the wheel 310. The support connection is arranged parallel to the motor shaft 321. The edge of the protective member 1800 facing the first plate-shaped platform 100 is connected to the support connection, so that the protective member 1800 and the first plate-shaped platform 100 are relatively fixed. The protective member 1800 is located on both sides of the wheel 310 and is connected to two fixing parts respectively, thereby further fixing the protective member 1800 and increasing the stability of the fixed protective member 1800. The protective member 1800 is roughly square in shape with its ends connected. The hollow part in the middle is used to make way for the setting of the wheel 310, so that the protective member 1800 can be arranged around the wheel 310, and the wheel 310 passes through the protective member 1800. The protective element 1800 includes two opposing baffles 1810. One baffle 1810 is located between the wheel 310 and the first plate-shaped platform 100, and the other baffle 1810 is located between the wheel 310 and the second plate-shaped platform 200. When the electric vehicle 10 is in the unfolded state, the lower end of the baffle 1810 near the first plate-shaped platform 100 is flush with the foot surface of the first plate-shaped platform 100, and the upper end extends upward along the surface of the wheel 310 by a certain width. Similarly, the lower end of the baffle 1810 near the second plate-shaped platform 200 is flush with the foot surface of the second plate-shaped platform 200, and the upper end extends upward along the surface of the wheel 310 by a certain width. By providing the protective element 1800, the two baffles 1810 located on both sides of the wheel 310 can protect the wheel 310, preventing the user's feet from touching the wheel 310 during riding, thus avoiding any impact on riding or potential safety hazards. Furthermore, the baffles 1810 can also prevent sewage from splashing directly onto the user's feet.

[0081] In one embodiment, such as Figure 7As shown, the battery assembly 600 is disposed within one of the first plate-shaped platform 100 and the second plate-shaped platform 200, and the controller 500 is disposed within the other plate-shaped platform 100 and the second plate-shaped platform 200. A cable connects the battery assembly 600 and the controller 500. When the electric vehicle 10 is in the unfolded state, the distance between the first plate-shaped platform 100 and the second plate-shaped platform 200 is a first distance, which is less than the length of the cable to prevent the cable from being pulled and broken or damaged when the electric vehicle 10 changes between the folded and unfolded states.

[0082] In one embodiment, both the bottom of the first plate-shaped platform 100 and the bottom of the second plate-shaped platform 200 are provided with anti-wear protrusions. By providing anti-wear protrusions, friction is avoided when the first plate-shaped platform 100 or the second plate-shaped platform 200 comes into contact with the ground, which could damage the outer shell of the first plate-shaped platform 100 or the second plate-shaped platform 200. Since both the first plate-shaped platform 100 and the second plate-shaped platform 200 contain electronic components, wear and tear on the first plate-shaped platform 100 or the second plate-shaped platform 200 may leave the internal electronic components unprotected, thereby rendering the electric vehicle 10 unusable.

[0083] In one embodiment, each of the two opposite ends of the motor shaft 321 is detachably fixed with a mounting platform 700. Because the mounting platform 700 is detachably connected to the end of the motor shaft 321, it facilitates the installation, removal, maintenance, and replacement of the mounting platform 700 on the motor shaft 321.

[0084] In one embodiment, magnetically controlled power switches are provided on the first plate-shaped platform 100 and the second plate-shaped platform 200.

[0085] In one embodiment, the weight of the second plate-shaped platform 200 is greater than the weight of the first plate-shaped platform 100; the second plate-shaped platform 200 and the first plate-shaped platform 100 are rotatably connected by a rotating connector 800, and the rotating connector 800 is located directly above the motor shaft 321 or to the upper right of the motor shaft 321.

[0086] In one embodiment, such as Figure 9 As shown, each of the connecting arm portions 710 has at least one substantially flat mounting surface 711 for connection with the first arm assembly 120. Because the mounting surface 711 is substantially flat, it facilitates close contact between the first arm assembly 120 and the connecting arm portion 710 when the first arm assembly 120 is fixedly connected to the mounting platform 700, thereby ensuring a tight fit and connection between the first arm assembly 120 and the connecting arm portion 710, resulting in a more compact structure.

[0087] In one embodiment, the width of the wheel 310 is greater than or equal to half the width of the first plate platform 100 or the second plate platform 200, so that the movement of the electric vehicle 10 is more stable.

[0088] In another embodiment of the electric vehicle 10 provided in this disclosure, at least one mounting platform 700 is provided at both ends of the motor shaft 321 for fixing one of the first plate platform 100 and the second plate platform 200. One of the first plate platform 100 and the second plate platform 200 is indirectly fixed to the motor shaft 321 by means of at least one mounting platform 700.

[0089] In one embodiment, such as Figure 7 As shown, a first plate-shaped platform 100 is fixedly connected to a first arm assembly 120, and the first arm assembly 120 is fixedly connected to a mounting platform 700 so that the first plate-shaped platform 100 is fixedly together with the motor shaft 321. A second plate-shaped platform 200 is fixedly connected to a second arm assembly 220, and the second arm assembly 220 is rotatably connected to the first arm assembly 120 so that the second plate-shaped platform 200 is rotatable relative to the first plate-shaped platform 100. The second plate-shaped platform 200 rotates relative to the first plate-shaped platform 100 to change the electric vehicle 10 from an unfolded state to a folded state, or from a folded state to an unfolded state.

[0090] Optionally, the first arm assembly 120 includes two first arms 121 respectively connected to both sides of the first plate-shaped platform 100. The two first arms 121 are located on both sides of the wheel 310, and each first arm 121 is fixedly connected to the mounting platform 700 located on the same side of the wheel 310. The second arm assembly 220 includes two second arms 221 respectively connected to both sides of the second plate-shaped platform 200. The two second arms 221 are located on both sides of the wheel 310, and each second arm 221 is rotatably connected to the first arm 121 located on the same side of the wheel 310. That is, the first plate-shaped platform 100 is indirectly fixedly connected to the motor shaft 321 through the two first arms 121, and the second plate-shaped platform 200 is rotatably connected to the first plate-shaped platform 100 through the two second arms 221.

[0091] Furthermore, such as Figure 8As shown, the second arm assembly 220 is rotatably connected to the first arm assembly 120 via a rotating connector 800. The rotating connector 800 is not coaxial with the motor shaft 321, meaning that the axis of the rotating connector 800 is offset relative to the axis of the motor shaft 321. Preferably, the rotating connector 800 is located directly above the motor shaft 321. This allows the electric vehicle 10 to have a higher ground clearance when it is in the deployed state and both the first plate platform 100 and the second plate platform 200 are parallel to the horizontal ground, thus ensuring the passability of the electric vehicle 10.

[0092] In one embodiment, when the electric vehicle 10 is in its unfolded state, the wheel assembly 300 is substantially centered between the first plate-shaped platform 100 and the second plate-shaped platform 200 in at least one of the length and width directions to ensure riding stability for the user when riding the electric vehicle 10. For example, when the electric vehicle 10 is in its unfolded state, the wheel assembly 300 is substantially centered between the first plate-shaped platform 100 and the second plate-shaped platform 200 in the width direction.

[0093] In one embodiment, such as Figure 4 As shown, when the electric vehicle 10 is in the unfolded state, the longitudinal axes of at least a portion of the first plate-shaped platform 100 and at least a portion of the longitudinal axes of the second plate-shaped platform 200 coincide with each other. When riding, the user's first foot steps on the portion of the first plate-shaped platform 100 whose longitudinal axis coincides with the longitudinal axis of the second plate-shaped platform 200, and the user's second foot steps on the portion of the second plate-shaped platform 200 whose longitudinal axis coincides with the longitudinal axis of the first plate-shaped platform 100. In the folded state, at least a portion of the first plate-shaped platform 100 and at least a portion of the second plate-shaped platform 200 are in contact with each other, thereby bringing the first plate-shaped platform 100 and the second plate-shaped platform 200 as close as possible in the folded state of the electric vehicle 10. It is understood that when the stepping surfaces of the first plate-shaped platform 100 and the second plate-shaped platform 200 are both completely flat, the longitudinal axis of the first plate-shaped platform 100 and the longitudinal axis of the second plate-shaped platform 200 are completely coincident in the unfolded state of the electric vehicle 10, and the first plate-shaped platform 100 and the second plate-shaped platform 200 are completely fitted together in the folded state of the electric vehicle 10.

[0094] In some embodiments, there is only one sensor 400. Since the electric vehicle 10 is in an unfolded state when the user rides it, the postures of the first plate-shaped platform 100 and the second plate-shaped platform 200 change simultaneously and by the same magnitude during riding. Therefore, in this embodiment, only one sensor 400 is needed to satisfy the requirement of sensing the postures of the first and second platforms, while also saving production costs.

[0095] In some embodiments, there is one controller 500. The controller 500 receives the attitude signal sent by the sensor 400 to control the motor 320 to drive the wheel 310. This satisfies the control requirements of the electric vehicle 10 and also saves production costs.

[0096] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0097] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. An electric vehicle, characterized in that include: A first plate-shaped platform includes a first stepping surface and a first arm assembly fixed to the first plate-shaped platform; The second plate-shaped platform includes a second stepping surface and a second arm assembly fixed to the second plate-shaped platform; A wheel assembly includes a wheel, a motor positioned within the wheel, and motor shafts extending from both sides of the wheel, wherein the stiffness of the motor shafts is greater than that of the second arm assembly. Battery components that power the electric vehicle; At least one sensor is used to sense the attitude of at least one of the first plate-shaped platform and the second plate-shaped platform and generate a corresponding attitude signal; and At least one controller communicatively connected to the motor and the at least one sensor, which is used to control the motor to drive the wheel based on the attitude signal; Each of the two opposite ends of the motor shaft is fixed with a mounting platform, and each mounting platform includes two oppositely arranged connecting arms. Wherein, the first arm assembly is fixedly connected to the mounting platform so that the first plate-shaped platform is fixed together with the motor shaft, and the second arm assembly is rotatably connected to the first arm assembly so that the second plate-shaped platform is rotatable relative to the first plate-shaped platform; The electric vehicle is configured to change between an unfolded state and a folded state. In the unfolded state, the second arm assembly abuts against the motor shaft to confine the electric vehicle in the unfolded state. The wheel assembly is positioned substantially centrally between the first plate platform and the second plate platform. The first step surface of the first plate platform and the second step surface of the second plate platform are oriented to be stepped on by the user's first and second feet, respectively. In the folded state, the first plate platform and the second plate platform are closer to each other than when they are in the unfolded state. The first arm assembly and the second arm assembly each have a first locking member positioned on the first arm assembly and a second locking member positioned on the second arm assembly. The first locking member includes a resilient post assembly located on the first arm assembly, and the second locking member includes a limiting groove located on the second arm assembly that can cooperate with the resilient post assembly. The first locking member and the second locking member are configured to cooperate in performing a locking operation that can be revoked by the user to lock the electric vehicle in its current state when it is in an unfolded or folded state.

2. The electric vehicle according to claim 1, characterized in that, The first arm assembly includes two first arms respectively connected to opposite sides of the first plate-shaped platform. The two first arms are located on both sides of the wheel, and each first arm is fixedly connected to a corresponding mounting platform located on the same side of the wheel as the first arm. The second arm assembly includes two second arms respectively connected to opposite sides of the second plate-shaped platform. The two second arms are located on opposite sides of the wheel, and each second arm is rotatably connected to a corresponding first arm located on the same side of the wheel.

3. The electric vehicle according to claim 2, characterized in that, Each of the first arms is fixedly connected to the mounting surface of the two connecting arms of the corresponding mounting platform by screws.

4. The electric vehicle according to claim 2 or 3, characterized in that, Each of the second arms is rotatably connected to a corresponding first arm located on the same side of the wheel via a rotatable connector.

5. The electric vehicle according to claim 4, characterized in that, The rotating connector is located directly above the motor shaft.

6. The electric vehicle according to claim 1, characterized in that, The mounting platform has a through hole adapted to the motor shaft, and the motor shaft passes through the through hole; The installation platform also has a limiting groove that communicates with the perforation, and a wedge-shaped limiting block is embedded in the limiting groove.

7. The electric vehicle according to claim 1, characterized in that, When the external force applied to the electric vehicle in its deployed state on a horizontal surface is removed to keep the foot surfaces of both the first and second slab platforms substantially parallel to the horizontal surface, one of the first and second slab platforms may spontaneously rotate in a first direction toward the horizontal surface, and the other of the first and second slab platforms may spontaneously rotate in a second direction opposite to the first direction toward the horizontal surface.

8. The electric vehicle according to claim 1, characterized in that, The overall weights of the first plate-shaped platform and the second plate-shaped platform are different.

9. The electric vehicle according to claim 1, characterized in that, The battery assembly is installed in the second plate-shaped platform, and the controller is installed in the first plate-shaped platform; The weight of the first plate-shaped platform is less than the weight of the second plate-shaped platform.

10. The electric vehicle according to claim 9, characterized in that, One of the first and second plate-shaped platforms, where the battery assembly is not installed, is provided with a through hole for a user to hold.

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