Electric all-terrain vehicle

Abstract

The utility model discloses an electric all-terrain vehicle. The electric all-terrain vehicle comprises a vehicle frame; the saddle is used for a user to sit, and the saddle is installed on the frame; the walking wheel set comprises a front wheel and a rear wheel; the driving system comprises a driving motor, and the driving system drives the walking wheel set; the power supply assembly comprises an energy storage device and at least provides power for the driving system, and the power supply assembly is a direct-current power supply; the gear box comprises an output shaft and is configured to transmit power of the driving system to the walking wheel set; and the driving motor is basically parallel to an output shaft of the gearbox. By the adoption of the technical scheme, the electric all-terrain vehicle is more compact in structure by reducing the occupied space of the motor shaft of the driving motor in the front-back direction.

Description

Technical Field

[0001] This application relates to the technical field of vehicles, and more particularly to an electric all-terrain vehicle. Background Art

[0002] In related technologies, an all-terrain vehicle refers to a vehicle that can travel on any terrain and move freely on terrains where ordinary vehicles have difficulty maneuvering. The all-terrain vehicle has multiple uses and is not restricted by road conditions. Therefore, higher requirements are imposed on the force-bearing of the suspension system of the all-terrain vehicle.

[0003] This section provides background information related to this application, which is not necessarily prior art. Summary of the Utility Model

[0004] This application provides a structurally compact electric all-terrain vehicle, which can solve the technical problem of the front and rear space occupied by the all-terrain vehicle.

[0005] To achieve the above object, this application adopts the following technical solutions: An electric all-terrain vehicle, comprising: a frame; a seat for a user to sit on, the seat being mounted to the frame; a walking wheel set including a front wheel and a rear wheel; a drive system including a drive motor, the drive system driving the walking wheel set; a power supply assembly including an energy storage device that provides power for at least the drive system, the power supply assembly being a DC power supply; a gearbox including an output shaft configured to transmit the power of the drive system to the walking wheel set; the drive motor is substantially parallel to the output shaft of the gearbox.

[0006] In some embodiments, the electric all-terrain vehicle further includes a steering gear, and the steering gear is substantially parallel to the drive motor.

[0007] In some embodiments, the steering gear is arranged on the frame, and in the front-rear direction, the steering gear is disposed in front of the drive motor.

[0008] In some embodiments, in the up-down direction, the steering gear is disposed above the gearbox.

[0009] In some embodiments, the steering gear is substantially parallel to the gearbox.

[0010] In some embodiments, the drive motor and the gearbox are driven by gears.

[0011] In some embodiments, when the installation position of the drive motor is higher than that of the gearbox, the height difference between the drive motor and the gearbox is less than or equal to half of the diameter of the gear connected to the drive motor.

[0012] In some embodiments, it further includes a suspension assembly disposed between the vehicle frame and the traveling wheel set; the suspension assembly includes an upper fork arm and a lower fork arm; the projection of the drive motor in the first plane is at least partially located between the projection of the upper fork arm in the first plane and the projection of the lower fork arm in the first plane; wherein, the first plane is perpendicular to the left-right direction.

[0013] In some embodiments, the suspension assembly is connected to the traveling wheel set through a support; the upper fork arm is connected to the support through a first steering knuckle; the lower fork arm is connected to the support through a second steering knuckle; a first included angle α is formed between the projection line of the first straight line L1 connecting the centers of the first steering knuckle and the second steering knuckle on a first reference plane perpendicular to the front-rear direction and the projection line of the wheel center line K on the first reference plane; wherein, the first included angle α is greater than or equal to 10° and less than or equal to 20°.

[0014] In some embodiments, a second included angle β is formed between the projection line of the first straight line L1 connecting the centers of the first steering knuckle and the second steering knuckle on a second reference plane perpendicular to the left-right direction and the projection line of the wheel center line K on the second reference plane; wherein, the second included angle β is greater than or equal to 2° and less than or equal to 10°.

[0015] In some embodiments, both the upper fork arm and the lower fork arm are composed of fork arm rods in a triangular shape. The fork arm rod includes a rotating shaft and two connecting rods connected to the rotating shaft. The connection part of the two connecting rods is connected to the support, and the rotating shaft is rotatably connected to the vehicle frame.

[0016] In some embodiments, the rotating shaft extends along a second straight line L2. The projection line of the second straight line L2 on the second reference plane forms a third included angle γ with the projection line of the horizontal plane on the second reference plane. Wherein, the second reference plane is perpendicular to the left-right direction, and the value range of the third included angle γ is greater than or equal to 4° and less than or equal to 7°.

[0017] In some embodiments, the rated power of the drive motor is greater than or equal to 10 kW. Description of the Drawings

[0018] Figure 1 is the overall vehicle schematic diagram of an electric all-terrain vehicle according to an embodiment of the present application;

[0019] Figure 2 is the schematic diagram of part of the electric all-terrain vehicle from one perspective according to an embodiment of the present application;

[0020] Figure 3 is the schematic diagram of part of the electric all-terrain vehicle from another perspective according to an embodiment of the present application;

[0021] Figure 4 is the schematic diagram of the suspension assembly for two traveling wheels according to an embodiment of the present application;

[0022] Figure 5 is Figure 4 the rear view of;

[0023] Figure 6 is Figure 4 the left view of;

[0024] Figure 7 is Figure 4 the top view of;

[0025] Figure 8 is the working schematic diagram of the driving system driving the traveling wheels of an embodiment of the present application;

[0026] Figure 9 is the working schematic diagram of the inverter of an embodiment of the present application in the whole vehicle;

[0027] Figure 10 is the working schematic diagram of the power supply component supplying power to the electric power steering system of an embodiment of the present application;

[0028] Figure 11 is the working schematic diagram of the power supply component supplying power to the electric power steering system in another embodiment of the present application;

[0029] Figure 12 is the working schematic diagram of the on - vehicle charger of an embodiment of the present application in the whole vehicle. Detailed Embodiments

[0030] Before explaining any embodiment of the present application in detail, it should be understood that the present application is not limited to the structural details and component arrangements described in the following description or shown in the above drawings.

[0031] In the present application, the terms "comprise", "include", "have" or any other variant thereof are intended to cover non - exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising that element.

[0032] In the present application, the term "and / or" is a correlative relationship describing associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, in the present application, the character " / " generally represents an "and / or" relationship between the associated objects before and after.

[0033] In this application, the terms "connect", "combine", "couple", and "mount" can be direct connections, combinations, couplings, or mounts, or indirect connections, combinations, couplings, or mounts. For example, a direct connection means that two parts or components are connected together without an intermediate member, and an indirect connection means that two parts or components are respectively connected to at least one intermediate member, and these two parts or components are connected through the intermediate member. In addition, "connect" and "couple" are not limited to physical or mechanical connections or couplings, and may include electrical connections or couplings.

[0034] In this application, those of ordinary skill in the art will understand that relative terms used in connection with a quantity or condition (e.g., "about", "approximately", "substantially", etc.) are intended to include the recited value and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances resulting from manufacturing, assembly, use, etc. associated with a particular value. Such terms should also be considered to disclose a range defined by the absolute values of two endpoints. Relative terms may refer to a plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values not using relative terms should also be disclosed as having tolerances. In addition, when expressing a relative angular positional relationship (e.g., substantially parallel, substantially perpendicular), "substantially" may refer to a plus or minus a certain number of degrees (e.g., 1 degree, 5 degrees, 10 degrees or more) from the indicated angle.

[0035] In this application, those of ordinary skill in the art will understand that the functions performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the functions performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0036] In this application, the orientation terms such as "upper", "lower", "left", "right", "front", "rear", etc. are described based on the orientation and positional relationship shown in the drawings, and should not be construed as limiting the embodiments of this application. In addition, in the context, it should also be understood that when it is mentioned that one element is connected "above" or "below" another element, it can not only be directly connected "above" or "below" another element, but also be indirectly connected "above" or "below" another element through an intermediate element. It should also be understood that orientation terms such as upper side, lower side, left side, right side, front side, rear side, etc. not only represent the positive orientation, but can also be understood as the side orientation. For example, the lower side may include directly below, lower left, lower right, front lower, and rear lower, etc.

[0037] In this application, the terms "controller", "processor", "central processing unit", "CPU", and "MCU" are interchangeable. When using the unit "controller", "processor", "central processing unit", "CPU", or "MCU" to perform a specific function, unless otherwise specified, these functions can be performed by a single such unit or multiple such units.

[0038] In this application, the terms "device", "module", or "unit" can be implemented in the form of hardware or software in order to achieve a specific function.

[0039] In this application, terms such as "calculate", "judge", "control", "determine", "identify", etc. refer to the operations and processes of a computer system or a similar electronic computing device (e.g., a controller, a processor, etc.). The following describes an electric all-terrain vehicle according to an embodiment of the present application with reference to the accompanying drawings.

[0040] As Figure 1 shown, the present application provides an electric all-terrain vehicle 10. The electric all-terrain vehicle 10 uses a battery as power, which has a lower cost, is more environmentally friendly, and does not require frequent part replacement, reducing the maintenance cost. In the related art, all-terrain vehicles (UTVs, Utility Vehicles) include four-wheel all-terrain vehicles (ATVs, All Terrain Vehicles), multi-functional all-terrain vehicles, and recreational off-road vehicles.

[0041] As Figure 1 and Figure 2As shown, in this embodiment, the electric all-terrain vehicle 10 may include a frame 100, a seat 120, and a carriage 300. The frame 100 may be a symmetric structure, including at least two crossbeams and at least two longitudinal beams. The seat 120 is for the user to sit on and is mounted to the frame 100. The carriage 300 is disposed on the frame 100 and may be located behind the seat 120. The electric all-terrain vehicle 10 further includes front wheels 40F and rear wheels 40R. The front wheels 40F and rear wheels 40R may also be defined as the driving wheels of the electric all-terrain vehicle 10, and the front wheels 40F and rear wheels 40R together constitute a driving wheel set 400. The driving wheel set 400 may further include a first differential that can rotate the two front wheels 40F at different speeds; and a second differential that can rotate the two rear wheels 40R at different speeds. In one embodiment, the rear wheels 40R may provide driving force for the electric all-terrain vehicle 10. In one embodiment, the front wheels 40F and rear wheels 40R together provide driving force for the electric all-terrain vehicle 10. The carriage 300 is disposed above the rear wheels 40R. The carriage 300 can be used to carry items, such as carrying heavy objects of 260 - 460 kg. The electric all-terrain vehicle 10 further includes a suspension assembly 111, which is disposed between the frame 100 and the driving wheel set 400, for dynamically connecting the frame 100 and the driving wheel set 400, providing shock absorption and damping for the whole machine, and reducing the bumps of the user.

[0042] In this embodiment, the electric all-terrain vehicle 10 includes a steering wheel 501. The steering wheel 501 may be located in front of the seat 120. As Figures 1 - 3 shown, the steering wheel 501 is connected to a steering gear 14. By rotating the steering wheel 501, the steering gear 14 is driven, and the steering gear 14 pulls the steering knuckle of the front wheel 40F to rotate, thereby changing the traveling direction of the electric all-terrain vehicle 10. In addition to the steering wheel 501, the operation assembly 500 of the electric all-terrain vehicle 10 further includes a control panel 511, an accelerator pedal 521, a brake pedal 541, and a parking assembly. In some embodiments, the parking assembly includes a parking pedal. In other embodiments, the parking assembly includes a parking handle or a parking button. The electric all-terrain vehicle 10 may further include a display screen 531 for displaying various information of the electric all-terrain vehicle 10, such as the cruising range, driving mode, etc.

[0043] A front bumper 102 is provided in front of the vehicle frame 100, and the front bumper 102 can protect the electric all-terrain vehicle 10. In addition, a towing structure is provided in front of the vehicle frame 100. When the electric all-terrain vehicle 10 gets stuck in a muddy area, it can tow a fixed object to enable the electric all-terrain vehicle 10 to get out of the muddy area. In some embodiments, the towing structure further includes a winch motor. Optionally, a towing connection is provided at the rear of the vehicle frame 100, and the towing connection can tow a heavy object, for example, it can tow a heavy object of 200-400 kg. Optionally, the towing connection can tow a wheeled electric tool.

[0044] See Figure 2 As shown, the electric all-terrain vehicle 10 further includes a drive system 12. In some embodiments, the drive system 12 includes two drive motors 123, which are respectively used to drive the front and rear walking wheel sets. The electric all-terrain vehicle 10 further includes a power supply assembly 161, and the power supply assembly 161 includes an energy storage device that provides power for each component of the electric all-terrain vehicle 10, at least providing power for the drive system. In some embodiments, the power supply assembly 161 is composed of detachable battery packs. In some embodiments, the power supply assembly 161 is composed of non-detachable built-in battery cell modules. In some embodiments, the power supply assembly 161 is jointly composed of detachable battery packs and non-detachable built-in battery cell modules. In some embodiments, the power supply assembly 161 is a DC power supply.

[0045] In some embodiments, such as Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the suspension assembly 111 is connected to the road wheel set 400 through the support 114. The suspension assembly 111 includes an upper fork arm 1111 and a lower fork arm 1112. The upper fork arm 1111 is connected to the support 114 through the first steering knuckle 112, and the lower fork arm 1112 is connected to the support 114 through the second steering knuckle 113. The support 114 is connected to the road wheel, thereby realizing the dynamic connection between the suspension assembly 111, the vehicle frame 100, and the road wheel set 400, providing shock absorption and damping for the whole vehicle and reducing bumps. Define the plane perpendicular to the front-rear direction as the first reference plane. The line connecting the centers of the first steering knuckle 112 and the second steering knuckle 113 is the first straight line L1. The projection line of the first straight line L1 on the first reference plane and the projection line of the wheel center line K on the first reference plane form a first included angle α, that is, the camber angle. The camber angle mainly affects the low-speed return-to-center effect. Among them, the value range of the first included angle α is greater than or equal to 10° and less than or equal to 20°. In some embodiments, the value range of the first included angle α is greater than or equal to 10° and less than or equal to 15°. In the related art, the camber angle is about 7°, 8°, or 9° to avoid heavy steering, but there is a risk of not being able to return to the center. By limiting the angle range of the camber angle to be greater than or equal to 10° and less than or equal to 20°, the return-to-center effect of the electric all-terrain vehicle 10 when driving at low speed is ensured, avoiding the inability to return to the center due to too small a camber angle and also avoiding heavy steering due to too large a camber angle. The specific values of the first included angle α can be 10°, 12°, 14°, 16°, 18°, 20°, etc., without limitation. Optionally, the distance between the first steering knuckle 112 and the wheel center line K is greater than the distance between the second steering knuckle 113 and the wheel center line K.

[0046] As Figure 10 and Figure 11 shown, the electric all-terrain vehicle 10 further includes an electric power steering system 95. The electric power steering system 95 is used to provide steering force for the road wheel set 400. Since the camber angle increases, resulting in heavy steering, the electric power steering system 95 provides auxiliary steering force to the road wheel set 400, enabling the electric all-terrain vehicle 10 in the related art to improve the return-to-center effect as much as possible with other structures unchanged after increasing the camber angle, greatly reducing the steering resistance and not easily causing driving fatigue.

[0047] The electric all-terrain vehicle 10 usually travels at medium and low speeds, so the angle of the camber angle is crucial. However, the electric all-terrain vehicle 10 also has high-speed driving situations. For this reason, define the plane perpendicular to the left-right direction as the second reference plane. As Figure 6As shown, the connection line between the center of the first steering knuckle 112 and the center of the second steering knuckle 113 is the first straight line L1. The projection line of the first straight line L1 on the second reference plane and the projection line of the wheel center line K on the second reference plane form a second included angle β, that is, the camber angle. The camber angle mainly affects the high-speed return effect. Among them, the value range of the second included angle β is greater than or equal to 2° and less than or equal to 10°. By limiting the angle range of the camber angle to be greater than or equal to 2° and less than or equal to 10°, the return effect of the electric all-terrain vehicle 10 during high-speed driving is ensured. The specific value of the second included angle β can be 2°, 4°, 6°, 8°, 10°, etc., without limitation.

[0048] In some embodiments, the value range of the second included angle β is greater than or equal to 4° and less than or equal to 8°. By restricting the camber angle within a larger angle range, the return effect of the electric all-terrain vehicle 10 during high-speed driving is further ensured. Optionally, the specific value of the second included angle β can be 4°, 5°, 6°, 7°, 8°, etc., without limitation.

[0049] As Figure 2 and Figure 4 shown, both the upper fork arm 1111 and the lower fork arm 1112 are composed of fork arm rods in a triangular shape. The fork arm rod includes a rotating shaft 111A and two connecting rods 111B connected to the rotating shaft 111A. The connection point of the two connecting rods 111B is connected to the support 114. The rotating shaft 111A is rotatably connected to the vehicle frame 100, enabling the vehicle frame 100, the support 114, and the wheel set 400 connected to the support 114 to rotate relative to each other, thereby realizing the dynamic connection between the vehicle frame 100 and the wheel set 400. Similarly, in other embodiments, the fork arm rod includes a rotating shaft 111A and two connecting rods 111B connected to the rotating shaft 111A. The connection point of the two connecting rods 111B is connected to the support 114. Among them, the connecting rod 111B is rotatably connected to the rotating shaft 111A, and the rotating shaft 111A is fixedly connected to the vehicle frame 100. The two connecting rods 111B can also rotate relative to the vehicle frame 100, and can be set according to actual needs without limitation.

[0050] As Figure 4 shown, the rotating shaft 111A extends along the second straight line L2. The projection line of the second straight line L2 on the second reference plane and the projection line of the horizontal plane on the second reference plane form a third included angle γ. Among them, the second reference plane is perpendicular to the left-right direction. The value range of the third included angle γ is greater than or equal to 4° and less than or equal to 7°. By slightly inclining the rotating shaft 111A relative to the horizontal plane, the fork arm rod is slightly inclined, so that the support 114 connected to the fork arm rod and the wheels connected to the support 114 are slightly inclined. Optionally, the rotating shaft 111A can be inclined downward or upward. The specific value of the third included angle γ can be 4°, 5°, 6°, 7°, etc., without limitation.

[0051] As Figure 1 shown, the energy storage device includes at least one battery pack, and the drive assembly includes at least a motor. The battery pack is at least used to supply power to the motor, that is, the battery pack supplies power to the DC motor, and the DC motor drives the driving wheels to rotate, with simple control.

[0052] In some embodiments, as Figure 4 and Figure 7 shown, the suspension assembly 111 includes an upper fork arm 1111, a lower fork arm 1112 and a shock absorber. Both the upper fork arm 1111 and the lower fork arm 1112 are composed of fork arm rods. The fork arm rods are provided with a first connection point 111C, a second connection point 111D and a third connection point 111E. The fork arm rods are connected to the wheel set 400 through the first connection point 111C, and are connected to the vehicle frame 100 through the second connection point 111D and the third connection point 111E. The connection line between the first connection point 111C and the second connection point 111D and the connection line between the first connection point 111C and the third connection point 111E form a first angle a. The connection line between the second connection point 111D and the first connection point 111C and the connection line between the second connection point 111D and the third connection point 111E form a second angle b. The connection line between the third connection point 111E and the first connection point 111C and the connection line between the third connection point 111E and the second connection point 111D form a third angle c. The third connection point 111E is close to the steering gear 14, and the third angle c is the largest, that is, the third angle c is greater than the first angle a or the second angle b. By increasing the third angle c and increasing the installation space between the connection line between the third connection point 111E and the first connection point 111C and the connection line between the third connection point 111E and the second connection point 111D, the structural interference between the fork arm rod and the steering gear 14 can be prevented.

[0053] Optionally, as Figure 7 shown, the first link 111B is located on the connection line between the first connection point 111C and the third connection point 111E, the second link 111B is located on the connection line between the first connection point 111C and the second connection point 111D, the rotating shaft 111A is located on the connection line between the second connection point 111D and the third connection point 111E. The angle between the first link 111B and the rotating shaft 111A is the third angle c, the angle between the second link 111B and the rotating shaft 111A is the second angle b, and the angle between the first link 111B and the second link 111B is the first angle a.

[0054] The first angle a is the smallest, and the distance between the connection line between the second connection point 111D and the third connection point 111E and the first connection point 111C is increased as much as possible, further reducing the risk of structural interference between the fork arm rod and the steering gear 14. The first angle a is an acute angle, and the third angle c can be an acute angle, a right angle or an obtuse angle, without limitation.

[0055] On the horizontal projection plane, the closed figure formed by the connection lines or the extension lines of the connection lines of the first connection point 111C, the second connection point 111D, and the third connection point 111E is on the same side of the connection line between the centers of the two running wheels. Here, the two running wheels refer to two front wheels 40F or two rear wheels 40R.

[0056] Optionally, as Figure 2 and Figure 7 shown, the closed figure formed by the connection lines or the extension lines of the connection lines of the first connection point 111C, the second connection point 111D, and the third connection point 111E is on the side of the connection line between the centers of the two front wheels 40F facing the outside of the vehicle body, and the closed figure formed by the connection lines or the extension lines of the connection lines of the first connection point 111C, the second connection point 111D, and the third connection point 111E is on the side of the connection line between the centers of the two rear wheels 40R facing the outside of the vehicle body. Try to increase the distance between the connection line between the centers of the two front wheels 40F and the connection line between the centers of the two rear wheels 40R, increase the installation space in the middle, and facilitate the installation and layout of other subsequent structures.

[0057] Optionally, the closed figure formed by the connection lines or the extension lines of the connection lines of the first connection point 111C, the second connection point 111D, and the third connection point 111E is on the side of the connection line between the centers of the two front wheels 40F facing the inside of the vehicle body, and the closed figure formed by the connection lines or the extension lines of the connection lines of the first connection point 111C, the second connection point 111D, and the third connection point 111E is on the side of the connection line between the centers of the two rear wheels 40R facing the outside of the vehicle body. Try to reduce the distance between the connection line between the centers of the two front wheels 40F and the connection line between the centers of the two rear wheels 40R to make the structure more compact.

[0058] Optionally, the closed figure formed by the connection lines or the extension lines of the connection lines of the first connection point 111C, the second connection point 111D, and the third connection point 111E is on the side of the connection line between the centers of the two front wheels 40F facing the inside of the vehicle body, and the closed figure formed by the connection lines or the extension lines of the connection lines of the first connection point 111C, the second connection point 111D, and the third connection point 111E is on the side of the connection line between the centers of the two rear wheels 40R facing the outside of the vehicle body. Or, the closed figure formed by the connection lines or the extension lines of the connection lines of the first connection point 111C, the second connection point 111D, and the third connection point 111E is on the side of the connection line between the centers of the two front wheels 40F facing the outside of the vehicle body, and the closed figure formed by the connection lines or the extension lines of the connection lines of the first connection point 111C, the second connection point 111D, and the third connection point 111E is on the side of the connection line between the centers of the two rear wheels 40R facing the inside of the vehicle body. It can be set according to requirements without limitation.

[0059] The dimensions of the fork arms of the upper fork arm 1111 are different from those of the fork arms of the lower fork arm 1112. The connection point between the upper fork arm 1111 and the lower fork arm 1112 is hinged so that they can rotate relative to each other to increase the degree of freedom between the upper fork arm 1111 and the lower fork arm 1112.

[0060] The projected area of the upper cross arm 1111 on the horizontal projection plane is not greater than the projected area of the lower cross arm 1112 on the horizontal projection plane, reducing the center of gravity position of the connection structure between the upper cross arm 1111 and the lower cross arm 1112, and making the structure more stable.

[0061] The energy storage device includes at least one battery pack for providing a stable output DC power supply for convenient use. Exemplarily, the battery pack is used to supply power to the control panel 511, the display screen 531, etc. Exemplarily, the walking wheels are driven by a DC motor, and the battery pack is used to supply power to the DC motor.

[0062] In some embodiments, the suspension assembly 111 is disposed between the vehicle frame 100 and the walking wheel set 400. The suspension assembly 111 includes a shock absorber with a sensor. The sensor is used to collect the vehicle condition and road condition information of the electric all-terrain vehicle 10. The electric all-terrain vehicle 10 further includes a signal processor and a control unit, which perform damping adjustment on the shock absorber according to the vehicle condition and road condition information collected by the sensor. Among them, the sensor includes at least one of an acceleration sensor and a force sensor. The vehicle condition information includes information such as vehicle speed, lateral acceleration, steering wheel 501 angle, and vehicle body height. The working conditions include turning, accelerating, braking, and taking off. The damping adjustment method of the shock absorber in the prior art can be manual, electric, or automatic, and its specific structure and control form, etc. can all refer to the prior art and will not be elaborated here.

[0063] The suspension assembly 111 further includes a cross arm rod that connects the vehicle frame 100 and the walking wheel set 400. The shock absorber has a first end and a second end, the first end of which is connected to the vehicle frame 100, and the second end is connected to the cross arm rod.

[0064] Optionally, the shock absorber is an electronic shock absorber.

[0065] As Figure 8 shown, the drive system 12 of the electric all-terrain vehicle 10 includes at least a front drive motor 123F. The front drive system 12F includes a front drive motor 123F, a front controller 124F, and a front drive circuit 125F. The front drive system 12F drives the front wheels 40F to move. Optionally, the output shaft of the front drive motor 123F is connected to the front transmission assembly 127F to drive the front wheels 40F to rotate. Optionally, the front drive motor 123F is a permanent magnet synchronous motor or an asynchronous motor.

[0066] In some embodiments, as Figure 2 shown, the projection of the drive motor 123 on the first plane is at least partially located between the projection of the upper cross arm 1111 on the first plane and the projection of the lower cross arm 1112 on the first plane. The first plane is perpendicular to the left-right direction, preventing the drive motor 123 from having a structural interference with the upper cross arm 1111 and the lower cross arm 1112 in the front-rear direction of the vehicle body.

[0067] Optionally, as Figure 3 shown, the drive motor 123 is horizontally disposed. The electric all-terrain vehicle 10 further includes a steering gear 14 which is parallel to the drive motor 123. The electric all-terrain vehicle 10 further includes a gearbox 13 which is connected between the drive system 12 and the running wheel set 400 and is parallel to the drive motor 123. By arranging the drive motor 123, the steering gear 14 and the gearbox 13 in the above manner, the occupied space of the motor shaft of the drive motor 123 in the length direction is reduced, and the structure is made more compact. Optionally, at least one drive motor 123 is disposed in front of the seat 120, making full use of the space in front of the seat 120 and facilitating subsequent maintenance of the drive motor 123.

[0068] In some embodiments, the suspension assembly 111 further includes an electronic shock absorber which can adjust the damping according to information such as the vehicle condition and working condition, improving the shock absorption effect.

[0069] In some embodiments, as Figure 3 shown, the electric all-terrain vehicle 10 further includes a gearbox 13. The gearbox 13 includes an output shaft configured to transmit the power of the drive system 12 to the running wheel set 400. By providing the gearbox 13, the rotational speed of the drive motor 123 can be reduced and the torque of the drive motor 123 can be increased, thereby driving the running wheels to move forward or backward. The drive motor 123 is disposed parallel to the output shaft of the gearbox 13. The occupied space in the length direction of the output shaft is reduced, and the structure is made more compact. The drive motor 123 and the gearbox 13 are in gear transmission. Exemplarily, a driving gear 131 is mounted on the motor shaft of the drive motor 123, and a driven gear 132 is mounted on the input shaft of the gearbox 13. The driving gear 131 and the driven gear 132 are engaged, or an intermediate transmission gear is further provided between the driving gear 131 and the driven gear 132, which is not limited. Optionally, when the mounting position of the drive motor 123 is higher than that of the gearbox 13, the height difference between the drive motor 123 and the gearbox 13 is less than or equal to half of the diameter of the gear connected to the drive motor 123, reducing the height difference between the gearbox 13 and the drive motor 123 and making the structure compact in the height direction of the vehicle body. The rated power of the drive motor 123 is greater than or equal to 10 kW and less than or equal to 30 kW, and specifically may be 10 kW, 15 kW, 20 kW, 25 kW, 30 kW.

[0070] In some embodiments, the electric all-terrain vehicle 10 further includes a steering gear 14. The steering gear 14 is parallel to the drive motor 123, and the steering gear 14 is arranged parallel to the gearbox 13, that is, the steering gear 14, the gearbox 13, and the drive motor 123 are parallel to each other, and the steering gear 14 is arranged on the vehicle frame 100. In some embodiments, in the front-rear direction, the steering gear 14 is arranged in front of the drive motor 123; in the up-down direction, the steering gear 14 is arranged above the gearbox 13. In some other embodiments, in the front-rear direction, the gearbox 13, the steering gear 14, and the drive motor 123 are arranged in sequence from front to back. In this way, the space occupied along the length direction of the motor shaft of the drive motor 123 can be reduced, and the structure is compact.

[0071] In the seventh embodiment, as Figures 2 - 5 shown, the bottom of the vehicle frame 100 is welded with rectangular tubes and stamping plates, and the top is welded with round tubes, and there are positions for installing front and rear suspension assemblies 111, the gearbox 13, the steering gear 14 and other parts. The vehicle frame 100 is transversely welded with stamping plates, rectangular tubes, etc. to increase the structural stiffness. Avoid using structures such as thick steel plates to achieve lightweight. Optionally, the vehicle frame 100 is made of a mixture of various materials such as alloys or non-metallic materials with a density smaller than that of steel, which can not only achieve lightweight but also ensure the structural strength. Exemplarily, carbon fiber and aluminum alloy materials are used in combination. Optionally, weight-reducing holes can be opened on the vehicle frame 100 to further achieve lightweight, and the opening size and position of the specific weight-reducing holes are set according to the actual situation. Optionally, when installation parts such as battery packs are installed on the vehicle frame 100, they can replace the cross beam to achieve weight reduction.

[0072] In some embodiments, as Figure 9 shown, the electric all-terrain vehicle 10 further includes an inverter 700. The inverter 700 is a converter that converts direct current electrical energy into alternating current with a fixed frequency and voltage or a variable frequency and voltage, and is configured to output power to a load. The inverter 700 has two output ports, and the output parameters of the two output ports are different. In some embodiments, the two output ports can respectively output alternating current with a voltage of 110V or 220V for adapting to different AC loads. In some embodiments, at least one of the output ports can also output direct current with a voltage range of 5V - 80V. The output voltage of the above direct current can be a low direct current voltage, such as 5V or 12V. It can also be a high direct current voltage, such as 40V, 56V or 80V. The output voltages of the two output ports are respectively used for different loads such as Figure 9The output powers of the first load 801 and the second load 802, where the first load 801 and the second load 802 can be the same or different. The output parameters of the two output ports include at least one of voltage, power, and current, and are connected to the corresponding output ports according to the actual load requirements. Optionally, one output port is used to output US standard parameters, and the other output port is used to output European standard parameters.

[0073] When the electric all-terrain vehicle 10 is in the parked state, the inverter 700 is started. If the inverter 700 has no faults, the inverter 700 outputs normally. When the electric all-terrain vehicle 10 is in the driving state and the inverter 700 is started, the inverter 700 enters the standby mode. After waiting for the electric all-terrain vehicle 10 to be in the parked state, if the inverter 700 has no faults, the inverter 700 outputs normally, preventing the power supply component 161 from being damaged due to excessive consumption during driving.

[0074] As Figure 9 shown, the electric all-terrain vehicle 10 includes a control system 701. The control system 701 can identify the overall vehicle power. When the overall vehicle power is less than a preset value, the control system 701 can prompt the user to turn off the output of the inverter 700 to avoid excessive consumption. Exemplarily, the control system 701 can be a structure independent of the inverter 700. The control system 701 identifies the overall vehicle power. When the power is lower than the preset value, the control system 701 issues an alarm to prompt the customer to turn off the inverter 700. Or, the control system 701 can be a structure independent of the inverter 700. The control system 701 identifies the overall vehicle power. The inverter 700 is communicatively connected to the control system 701. When the power is lower than the preset value, the control system 701 automatically turns off the inverter 700. Or, the control system 701 is a structural component of the inverter 700. The inverter 700 automatically identifies the overall vehicle power through the control system 701. When the power is lower than the preset value, the control system 701 issues an alarm to prompt the customer to turn off the inverter 700 or automatically turns off the inverter 700. It can be set according to requirements without limitation. Optionally, the inverter 700 includes an identification system. The inverter 700 can automatically identify whether a load is connected through the identification system. By setting the control system 701 and the identification system, the working reliability of the inverter 700 is improved.

[0075] The electric all-terrain vehicle 10 further includes a front cabin 600. The inverter 700 is located at the position of the front cabin 600 of the whole vehicle, avoiding the inverter 700 occupying the middle space of the vehicle body, facilitating the configuration of other structures in the middle space of the vehicle body, avoiding interference between the inverter 700 and the wiring of other mechanisms, and facilitating the maintenance of the inverter 700.

[0076] Optionally, the drive system 12 includes a drive motor 123 for driving the running wheels, and an inverter 700 for controlling the drive motor 123, that is, the load can be the drive motor 123. The power of the inverter 700 is provided by the power supply assembly 161. Optionally, the power supply assembly 161 includes an energy storage device, and the energy storage device includes at least one battery pack, that is, the electric power stored in the battery pack is converted into alternating current through the inverter 700, and the converted alternating current is supplied from the inverter 700 to the drive motor 123, and the drive motor 123 generates a driving force.

[0077] Optionally, the electric all-terrain vehicle 10 further includes a high-voltage distribution box 900, and the high-voltage distribution box 900 is connected between the inverter 700 and the power supply assembly 161.

[0078] In some embodiments, as Figure 9 shown, the electric all-terrain vehicle 10 further includes an inverter 700 configured to output power to a load. After the inverter 700 is connected to the load, when the voltage of the inverter 700 reaches at least 80% of the rated voltage of the inverter 700, the inverter 700 outputs power outward, so that the inverter 700 has a soft-start function and can output stable alternating current voltage. In some embodiments, when the voltage of the inverter 700 reaches at least 70% of the rated voltage of the inverter 700, the inverter 700 outputs power outward.

[0079] The inverter 700 has two output ports, which are respectively used to output power to different loads. The output parameters of the two output ports are different. Optionally, the output parameters of the two output ports at least include one of voltage, power, and current, and are connected to the corresponding output port according to the actual load requirements.

[0080] Optionally, the inverter 700 includes an identification system, and the inverter 700 can automatically identify whether a load is connected through the identification system. By setting the control system 701 and the identification system, the working reliability of the inverter 700 is improved.

[0081] As Figure 1 、 Figure 10 and Figure 11As shown, the electric all-terrain vehicle 10 further includes a steering shaft and a steering mechanism. The steering shaft is connected to the steering wheel 501, and the steering wheel 501 is used to control the rotation of the steering shaft. The steering mechanism is connected to the steering shaft through an electric power steering system 95, and the steering mechanism is connected to the driving wheels. By providing an electric power steering system 95 between the steering shaft and the steering mechanism, the steering resistance can be greatly reduced, which is not likely to cause driving fatigue and ensures the safe driving of the driver. Optionally, the steering shaft and the electric power steering system 95 are connected through a universal joint and a spline, and the steering mechanism and the electric power steering system 95 are connected through a spline. By using a universal joint and a spline to connect the steering shaft and the electric power steering system 95, the dimensional errors in component manufacturing can be eliminated, and the assembly jamming problem of the electric power steering system 95 can be avoided.

[0082] As Figure 11 shown, the electric all-terrain vehicle 10 further includes a first power supply assembly 961, a second power supply assembly 962, a high-voltage distribution box 900, and an electric power steering system 95. The first power supply assembly 961 supplies power to at least the drive system 12. The high-voltage distribution box 900 is configured to manage the high-voltage power distribution of the whole vehicle. The first power supply assembly 961 supplies power to the electric power steering system 95 through the high-voltage distribution box 900 to form a power supply loop. When a fault occurs in the power supply loop, the second power supply assembly 962 supplies power to the electric power steering system 95. The second power supply assembly 962 supplies power to the electric power steering system 95 as a backup structure of the first power supply assembly 961, ensuring the power supply reliability. In the first embodiment, the voltage of the first power supply assembly 961 is greater than the voltage of the second power supply assembly 962.

[0083] In some embodiments, as Figure 10 shown, the voltage of the first power supply assembly 961 is higher than the voltage of the second power supply assembly 962. The electric all-terrain vehicle 10 further includes a voltage converter 97, which is configured to have the functions of converting DC high voltage to DC low voltage and converting DC low voltage to DC high voltage. The first power supply assembly 961 supplies power to the electric power steering system 95 through the high-voltage distribution box 900. When a fault occurs in this power supply loop, the second power supply assembly 962 supplies power to the electric power steering system 95 through the voltage converter 97. And when the first power supply assembly 961 supplies power to the electric power steering system 95 through the high-voltage distribution box 900, it also supplies power to the second power supply assembly 962 through the voltage converter 97.

[0084] Optionally, the first power supply assembly 961 includes at least one battery pack; and / or, the second power supply assembly 962 includes at least one battery pack. The voltage of the first power supply assembly 961 is greater than or equal to 56V, and the voltage of the second power supply assembly 962 is less than 56V. Exemplarily, the voltage of the first power supply assembly 961 is 56V, and the voltage of the second power supply assembly 962 is 12V. Optionally, the second power supply assembly 962 is a low-voltage storage battery.

[0085] As Figure 1 and Figure 12 shown, the electric all-terrain vehicle 10 further includes an in-vehicle charger 98, which is configured to convert alternating current into direct current to charge the power supply assembly 161. The end of the in-vehicle charger 98 is connected to a charging dock, and the charging dock has an electronic control cover 981 configured with a valve body. The controller realizes the opening and closing of the electronic control cover 981 by controlling the state of the valve body. The in-vehicle charger 98 can identify the battery state, such as chemical properties, voltage, power, and temperature, and adjust the charging strategy according to the battery type.

[0086] The charging dock has an interlock function with the charging gun to prevent the charging gun from being accidentally unplugged or falling off during the charging process. The in-vehicle charger 98 detects the temperature of the charging dock in real time during the charging process to prevent a fire caused by excessive temperature. The charging dock also has at least one DC-DC port. The electric all-terrain vehicle 10 further includes a front cabin 600, and the in-vehicle charger 98 is located in the front cabin 600 of the whole vehicle for convenient charging.

[0087] The above shows and describes the basic principles, main features, and advantages of the present application. Those skilled in the art should understand that the above embodiments do not limit the present application in any form. Any technical solutions obtained by using equivalent replacements or equivalent transformations fall within the protection scope of the present application.

Claims

1. An electric all-terrain vehicle comprising: Frame; A vehicle seat, for a user to sit on, the vehicle seat being mounted to the vehicle frame; A running wheel set, the running wheel set comprising a front wheel (40F) and a rear wheel; A driving system, including a driving motor, wherein the driving system drives the walking wheel set; A power supply assembly, the power supply assembly includes an energy storage device, at least providing power for the drive system, and the power supply assembly is a DC power supply; A gearbox, including an output shaft, configured to transmit the drive system power to the travel wheel set; Characterized in that the drive motor is substantially parallel to the output shaft of the gear box.

2. The electric all-terrain vehicle according to claim 1, characterized in that: The electric all-terrain vehicle also includes a steering gear, which is substantially parallel to the drive motor.

3. The electric all-terrain vehicle according to claim 2, characterized in that: The steering gear is arranged on the vehicle frame, and in the front-rear direction, the steering gear is arranged in front of the driving motor.

4. The electric all-terrain vehicle according to claim 2, characterized in that: The steering gear is disposed above the gear box in the up-down direction.

5. The electric all-terrain vehicle according to claim 2, characterized in that: The steering gear is substantially parallel to the gear box.

6. The electric all-terrain vehicle according to claim 1, characterized in that: The driving motor and the gear box are driven by gears.

7. The electric all-terrain vehicle according to claim 6, characterized in that: When the drive motor is installed at a higher position than the gear box, the height difference between the drive motor and the gear box is less than or equal to half the diameter of the gear connected to the drive motor.

8. The electric all-terrain vehicle according to claim 1, characterized in that: It also includes a suspension assembly arranged between the frame and the running wheel group; the suspension assembly includes an upper fork arm and a lower fork arm; the projection of the drive motor on the first plane is at least partially located between the projection of the upper fork arm on the first plane and the projection of the lower fork arm on the first plane; wherein the first plane is perpendicular to the left-right direction.

9. The electric all-terrain vehicle according to claim 8, characterized in that: The suspension assembly is connected to the traveling wheel assembly via a support; the upper fork arm is connected to the support via a first steering knuckle; the lower fork arm is connected to the support via a second steering knuckle; a first straight line L1 connecting the center of the first steering knuckle and the center of the second steering knuckle forms a first angle α between a projection line of the first straight line L1 on a first reference plane perpendicular to the front-rear direction and a projection line of the wheel center line K on the first reference plane; wherein the first angle α is greater than or equal to 10° and less than or equal to 20°.

10. The electric all-terrain vehicle according to claim 9, characterized in that: A second angle β is formed between a projection line of a first straight line L1 connecting the center of the first steering knuckle and the center of the second steering knuckle on a second reference plane perpendicular to the left and right directions and a projection line of a wheel center line K on the second reference plane; wherein the second angle β is greater than or equal to 2° and less than or equal to 10°.

11. The electric all-terrain vehicle according to claim 9, characterized in that: The upper fork arm and the lower fork arm are both composed of a triangular fork arm rod, and the fork arm rod includes a rotating shaft and two connecting rods connected to the rotating shaft. The connection between the two connecting rods is connected to the support, and the rotating shaft is rotatably connected to the frame.

12. The electric all-terrain vehicle according to claim 11, characterized in that: The rotation axis extends along a second straight line L2, and a projection line of the second straight line L2 on a second reference plane and a projection line of a horizontal plane on the second reference plane form a third angle γ, wherein the second reference plane is perpendicular to the left and right directions, and a value range of the third angle γ is greater than or equal to 4° and less than or equal to 7°.

13. The electric all-terrain vehicle according to any one of claims 1 to 12, characterized in that: The rated power of the drive motor is greater than or equal to 10 kW.

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