Electric all-terrain vehicle

Abstract

The invention provides an electric all-terrain vehicle which comprises a vehicle frame, a power system, a transmission assembly, a walking assembly, a seat assembly and a battery assembly, the power system is supported by the vehicle frame, the transmission assembly is in transmission connection to the power system, the walking assembly comprises front wheels and rear wheels, the seat assembly is connected to the vehicle frame, and the battery assembly comprises a power battery; a reference plane perpendicular to the height direction is defined, the projection of the seat assembly on the reference plane in the height direction is defined as a seat projection, the projection of the power battery on the reference plane in the height direction is defined as a battery projection, and at least part of the seat projection is arranged on the front side of the battery projection; the ratio of the area of the overlapped part of the battery projection and the seat projection to the area of the seat projection is greater than or equal to 0.52 and less than or equal to 1. According to the electric all-terrain vehicle, at least part of the power battery is arranged below the seat assembly, the space between the seat assembly and the vehicle frame can be fully utilized, and the layout compactness and the driving comfort of the electric all-terrain vehicle are improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to an electric all-terrain vehicle. Background Art

[0002] All-terrain vehicles (ATVs), offering excellent road-going performance and a fun ride, are increasingly popular with consumers. SSVs (Side-by-Side Vehicles) and UTVs (Utility Vehicles) primarily feature semi-enclosed or fully enclosed cabs and side-by-side seating arrangements, unlike those found in straddle-mounted vehicles.

[0003] With the growing trend toward electrification, some all-terrain vehicles (ATVs) powered by electricity have emerged. However, this electrification process still presents challenges. The power battery is a crucial component and energy source for electric ATVs. The power battery and its placement not only impact the vehicle's operation but also the space utilization of the vehicle's electrical and transmission components. Utilizing the existing layout of an electric ATV to accommodate the power battery is crucial for those skilled in the art. Summary of the Invention

[0004] In order to address the deficiencies of the prior art, an object of the present invention is to provide an electric all-terrain vehicle with a compact power battery layout.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] The present invention provides an electric all-terrain vehicle, comprising a frame; a power system supported by the frame; a transmission assembly, the transmission assembly being connected to the power system; a running assembly, the running assembly including front wheels and rear wheels at least partially arranged on the lower side of the frame; a seat assembly, the seat assembly being connected to the frame; a battery assembly, the battery assembly including a power battery for providing energy to the power system; the battery assembly is at least partially arranged below the seat assembly, and when viewed from the height direction of the all-terrain vehicle, the battery assembly and the seat assembly at least partially overlap; a reference plane perpendicular to the height direction of the electric all-terrain vehicle is defined, the projection of the seat assembly along the height direction of the electric all-terrain vehicle on the reference plane is defined as the seat projection, the projection of the power battery along the height direction of the electric all-terrain vehicle on the reference plane is defined as the battery projection, the seat projection is at least partially arranged in front of the battery projection, and the ratio of the area of ​​the overlapping part of the battery projection and the seat projection to the area of ​​the seat projection is greater than or equal to 0.52 and less than or equal to 1.

[0007] Furthermore, the transmission assembly includes a front drive axle connected to the front wheel drive, the front drive axle is at least partially arranged in front of the power battery, and the power system is at least partially arranged behind the power battery. The transmission assembly also includes a drive shaft connecting the front drive axle and the power system, and the drive shaft is at least partially arranged on the lower side of the power battery.

[0008] Furthermore, the transmission assembly also includes a rear drive axle connected to the rear wheel transmission. The front drive axle, rear drive axle and power battery are distributed along the length of the electric all-terrain vehicle, and the power battery is arranged between the front drive axle and the rear drive axle.

[0009] Furthermore, the power battery includes an inwardly recessed accommodating portion, which is arranged to pass through the power battery along the length direction of the electric all-terrain vehicle, and the transmission shaft is at least partially arranged in the accommodating portion.

[0010] Furthermore, when viewed along the width direction of the electric all-terrain vehicle, the transmission shaft and the power battery at least partially overlap; when viewed along the height direction of the electric all-terrain vehicle, the transmission shaft and the power battery at least partially overlap.

[0011] Furthermore, the power battery includes a battery shell, which includes an upper shell and a lower shell distributed along the height direction of the electric all-terrain vehicle, and the accommodating portion is arranged at the bottom of the lower shell; a battery base is provided on the frame, and a mounting seat is provided on the lower shell. When the power battery and the frame are in a connected state, the mounting seat is fixedly connected to the battery base.

[0012] Furthermore, a connecting portion is provided on the mounting seat, and when the power battery and the vehicle frame are in a connected state, the connecting portion is fixedly connected to the battery base.

[0013] Furthermore, the front wheels include a first wheel and a second wheel distributed along the width direction of the electric all-terrain vehicle, and the rear wheels include a third wheel and a fourth wheel distributed along the width direction of the all-terrain vehicle. The area enclosed by connecting the center point of the first wheel, the center point of the second wheel, the center point of the third wheel and the center point of the fourth wheel in sequence is defined as the wheel area, and the projection of the wheel area on the reference plane along the height direction of the electric all-terrain vehicle is defined as the wheel projection area. The battery projection is basically set within the wheel projection area, and the ratio of the area of ​​the battery projection to the area of ​​the wheel projection area is greater than or equal to 0.09 and less than or equal to 0.17.

[0014] Furthermore, the ratio of the maximum length of the power battery in the width direction of the electric all-terrain vehicle to the maximum length of the frame in the width direction of the electric all-terrain vehicle is greater than or equal to 0.5 and less than or equal to 1.

[0015] Furthermore, the electric all-terrain vehicle also includes a vehicle controller, which is arranged between the seat assembly and the power battery. When viewed from the height direction of the electric all-terrain vehicle, the seat assembly, the power battery and the vehicle controller at least partially overlap.

[0016] In the present invention, by at least partially arranging the power battery in the battery assembly under the seat assembly, the space between the seat assembly and the frame can be fully utilized, the impact of the power battery arrangement on the driving space can be reduced, and the compactness of the electric all-terrain vehicle layout and the driving comfort can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of the electric all-terrain vehicle of this application;

[0018] Figure 2 A schematic structural diagram of the frame and power battery of the electric all-terrain vehicle of this application;

[0019] Figure 3 This is a schematic diagram of the structure of the seat assembly and power battery of this application;

[0020] Figure 4 A schematic diagram of the structure of the temperature control device and power battery of this application;

[0021] Figure 5 This is a schematic structural diagram of the temperature control device and power battery of the present application from another perspective;

[0022] Figure 6 A cross-sectional view of the seat assembly and power battery of this application;

[0023] Figure 7 This is a partial structural diagram of the control system of this application. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the specific embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be an element centered thereon. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementations.

[0026] This application provides Figure 1 and Figure 2An electric all-terrain vehicle 100 is shown, and the electric all-terrain vehicle 100 includes a frame 11, a power system 12, a transmission assembly 13, a travel assembly 14 and a seat assembly 15. The frame 11 forms a passenger cabin 111 and a rear cabin 112. The passenger cabin 111 is used for the driver and passengers to sit in. The rear cabin 112 is basically arranged behind the passenger cabin 111. The rear cabin 112 is mainly used to accommodate and carry the power system 12. The travel assembly 14 includes a front wheel 141 and a rear wheel 142. The power system 12 is connected to at least one of the front wheels 141 or the rear wheels 142 through the transmission assembly 13. The power system 12 transmits power to at least one of the front wheels 141 or the rear wheels 142 through the transmission assembly 13. The seat assembly 15 is arranged in the passenger cabin 111 to provide support for the driver and passengers. The seat assembly 15 includes at least two seats 151 arranged side by side along the width direction of the electric all-terrain vehicle 100. In order to clearly define the technical solution of this application, it is also defined as follows Figure 1 Front, back, left, right, top and bottom sides shown.

[0027] In the description of this application, it needs to be understood that the term "length direction" refers to the front and rear direction of the vehicle when the driver is driving, the term "width direction" refers to the left and right direction of the vehicle when the driver is driving, and the term "height direction" refers to the up and down direction of the vehicle when the driver is driving.

[0028] like Figure 1 、 Figure 2 and Figure 3As shown, the transmission assembly 13 includes a drive shaft 131 extending along the length of the electric ATV 100. The power system 12 is connected to the front wheels 141 via the drive shaft 131, enabling the power system 12 to drive the electric ATV 100. Specifically, the front wheels 141 include a first wheel 1411 and a second wheel 1412 disposed along the width of the electric ATV 100, while the rear wheels 142 include a third wheel 1421 and a fourth wheel 1422 disposed along the width of the electric ATV 100. The transmission assembly 13 includes a front drive axle 132 disposed at least partially between the first wheel 1411 and the second wheel 1412, and a rear drive axle 133 disposed at least partially between the third wheel 1421 and the fourth wheel 1422. The electric ATV 100 also includes a battery assembly 16, which includes power batteries 161. Power batteries 161 are capable of providing energy for the power system 12. Specifically, power batteries 161 may be lithium batteries. The power battery 161 is at least partially disposed on the frame 11 and extends substantially along the width direction of the electric all-terrain vehicle 100. The power battery 161 is disposed between the front drive axle 132 and the rear drive axle 133. The seat assembly 15 includes a seat 151 and a seat bracket 152 that connects the seat 151 to the frame 11. A receiving space is formed between the seat bracket 152 and the frame 11, and the power battery 161 is at least partially disposed in the receiving space. The above arrangement solves the problem of limited space for arranging the power battery 161, and the seat bracket 152 can provide protection for the power battery 161, thereby preventing the power battery 161 from being damaged due to collisions during the driving of the electric all-terrain vehicle 100, thereby improving the safety and service life of the power battery 161. The drive shaft 131 at least partially passes through the receiving space and is at least partially disposed below the power battery 161.

[0029] Specifically, an inwardly recessed receiving portion 1611 is provided below the power battery 161. The receiving portion 1611 basically penetrates the power battery 161 along the length direction of the electric all-terrain vehicle 100, and the transmission shaft 131 is at least partially disposed within the receiving portion 1611. When viewed along the height direction of the electric all-terrain vehicle 100, the transmission shaft 131 at least partially overlaps with the power battery 161. When viewed along the width direction of the electric all-terrain vehicle 100, the transmission shaft 131 at least partially overlaps with the power battery 161. A reference plane 101 perpendicular to the height direction of the electric all-terrain vehicle 100 is defined, and the projection of the seat assembly 15 along the height direction of the electric all-terrain vehicle 100 on the reference plane 101 is defined as the seat projection. The projection of the power battery 161 along the height direction of the electric all-terrain vehicle 100 on the reference plane 101 is defined as the battery projection, and the seat projection is at least partially located in front of the battery projection. This arrangement prevents the power battery 161 from protruding from the front of the seat assembly 15, thereby preventing it from occupying the rider's leg space and improving the comfort of the electric ATV 100. If the power battery 161 is relatively large, it can be at least partially positioned behind the seat assembly 15, provided that other components are properly positioned. This ensures that the weight of the power battery 161 is distributed throughout the electric ATV 100, improving the overall weight distribution of the electric ATV 100 and increasing the space utilization of the electric ATV 100.

[0030] As an embodiment, the ratio of the area of ​​the overlapping portion of the battery projection and the seat projection to the area of ​​the seat projection is greater than or equal to 0.52 and less than or equal to 1. Furthermore, the ratio of the area of ​​the overlapping portion of the battery projection and the seat projection to the area of ​​the seat projection is greater than or equal to 0.6 and less than or equal to 0.9. Still further, the ratio of the area of ​​the overlapping portion of the battery projection and the seat projection to the area of ​​the seat projection is greater than or equal to 0.67 and less than or equal to 0.83. Through the above arrangement, more of the power battery 161 is arranged in the space below the seat assembly 15, thereby improving the space utilization rate of the space between the seat assembly 15 and the frame 11. At the same time, it can also allow the power battery 161 to occupy less or even no space outside the space below the seat assembly 15, thereby improving the compactness of the layout of the power battery 161 and enhancing the rationality of the internal space layout of the electric all-terrain vehicle 100.

[0031] As an embodiment, the ratio of the area of ​​the overlapping portion of the battery projection and the seat projection to the area of ​​the battery projection is greater than or equal to 0.65 and less than or equal to 1. Furthermore, the ratio of the area of ​​the overlapping portion of the battery projection and the seat projection to the area of ​​the battery projection is greater than or equal to 0.72 and less than or equal to 0.9. Still further, the ratio of the area of ​​the overlapping portion of the battery projection and the seat projection to the area of ​​the battery projection is greater than or equal to 0.78 and less than or equal to 0.8. Through the above arrangement, it is possible to avoid the position of the power battery 161 being too far back due to the ratio of the area of ​​the overlapping portion of the battery projection and the seat projection to the area of ​​the battery projection being less than 0.65, so as to avoid the power battery 161 occupying the layout space of other components, thereby improving the compactness of the layout of the power battery 161 and improving the space utilization rate of the electric all-terrain vehicle 100.

[0032] like Figure 2 As shown, the area enclosed by connecting the center points of the first wheel 1411, the second wheel 1412, the third wheel 1421, and the fourth wheel 1422 in sequence is the wheel area. The battery projection is substantially located within the wheel area, and the ratio of the battery projection area to the wheel area is greater than or equal to 0.09 and less than or equal to 0.17. Furthermore, the ratio of the battery projection area to the wheel area is greater than or equal to 0.1 and less than or equal to 0.16. Furthermore, the ratio of the battery projection area to the wheel area is greater than or equal to 0.12 and less than or equal to 0.14. Placing the battery projection in the wheel area ensures the stability of the power battery 161 on the electric all-terrain vehicle 100. Limiting the size of the battery projection prevents the power battery 161 from occupying the space for other components if the battery projection is too large, reduces the weight of the electric all-terrain vehicle 100, and thus facilitates a compact layout of the electric all-terrain vehicle 100. This also prevents the battery projection area from being too small, which would reduce the size of the power battery 161, thereby ensuring the endurance of the electric all-terrain vehicle 100. It should be noted that in this application, a symmetry plane perpendicular to the width of the electric all-terrain vehicle 100 and substantially bisecting the first wheel 1411 is defined, and the center point of the first wheel 1411 is the intersection of the symmetry plane of the first wheel 1411 and the rotation axis of the first wheel 1411. It is understood that the center point of the second wheel 1412 is the intersection of the symmetry plane of the second wheel 1412 in the width direction and the rotation axis of the second wheel 1412. The center points of the third wheel 1421 and the fourth wheel 1422 are similar, and are not further described here.

[0033] like Figure 2 and Figure 3As shown, the projection of the frame 11 along the height direction of the electric all-terrain vehicle 100 on the reference plane 101 is the frame projection, and the ratio of the maximum length L1 of the battery projection in the width direction of the electric all-terrain vehicle 100 to the maximum length L2 of the frame projection in the width direction of the electric all-terrain vehicle 100 is greater than or equal to 0.5 and less than or equal to 1. Furthermore, the ratio of the maximum length L1 of the battery projection in the width direction of the electric all-terrain vehicle 100 to the maximum length L2 of the frame projection in the width direction of the electric all-terrain vehicle 100 is greater than or equal to 0.6 and less than or equal to 0.9. Furthermore, the ratio of the maximum length L1 of the battery projection in the width direction of the electric all-terrain vehicle 100 to the maximum length L2 of the frame projection in the width direction of the electric all-terrain vehicle 100 is greater than or equal to 0.7 and less than or equal to 0.8. This arrangement enables the power battery 161 to fully utilize the space in the left and right directions of the electric all-terrain vehicle 100, and minimizes the space occupied by the power battery 161 in the front and rear directions while maintaining the battery life and volume of the power battery 161; and as mentioned above, the power battery 161 is basically arranged below the seat assembly 15. This arrangement makes full use of the layout space below the seat assembly 15, reducing the interference of the power battery 161 on the installation of other components of the electric all-terrain vehicle 100.

[0034] like Figure 2 and Figure 3As shown, as an implementation, the power battery 161 includes a battery housing and a battery module disposed within the battery housing. Alternatively, the battery housing may include a lower housing 1612 and an upper housing 1613 arranged along the height of the electric all-terrain vehicle 100. The lower housing 1612 and the upper housing 1613 are connected to form a housing chamber for protecting the battery module. The lower housing 1612 is fixedly connected to the vehicle frame 11. When the power battery 161 is impacted by external forces, the lower housing 1612 and the upper housing 1613 protect the battery module from damage, thereby improving its safety and service life. As previously mentioned, the transmission shaft 131 is at least partially disposed below the power battery 161. Alternatively, the lower end of the lower housing 1612 is recessed upward to form a housing 1611, within which the transmission shaft 131 is at least partially disposed. Specifically, the inner contour of the housing 1611 can be configured to substantially coincide with the outer contour of the transmission shaft 131, thereby increasing the space utilization of the housing 1611. This setting method can effectively move the installation position of the power battery 161 downward without changing the transmission setting of the entire vehicle, which can effectively lower the center of gravity of the entire vehicle and improve stability. At the same time, it can fully ensure the interference within the installation range of the transmission shaft 131. Specifically, the lower shell 1612 is provided with a mounting seat 1612a for connecting to the frame 11, and the mounting seat 1612a is provided with a connecting portion 1612b connected to the frame 11 and a lifting portion 1612c for lifting. The battery lifting seat 1612c can be used to connect with external tools to achieve the removal or position replacement of the power battery 161. The mounting seat 1612a is set on the side of the lower shell 1612. A battery base 113 is provided on the frame 11. When the power battery 161 is in a connected state with the frame 11, the mounting seat 1612a abuts against the battery base 113. The connecting portion 1612b of the power battery 161 is connected to the battery base 113 via fasteners, thereby connecting the power battery 161 to the vehicle frame 11. During the actual installation process, the connecting portion 1612b is placed on the battery base 113 and then fixed to the battery base 113 via fasteners, completing the installation of the entire power battery 161. The arrangement of the connecting portion 1612b and the battery base 113 can increase the contact area and contact points between the lower housing 1612 and the vehicle frame 11, preventing relative movement between the lower housing 1612 and the vehicle frame 11, and improving the connection strength between the power battery 161 and the vehicle frame 11, thereby improving the operating stability of the power battery 161. The connecting portion 1612b and the lower housing 1612 can be integrally molded, that is, the connecting portion 1612b is manufactured at the same time as the lower housing 1612. This integral molding arrangement can strengthen the connecting portion 1612b and prevent it from falling off, and can also reduce the assembly process steps and reduce manufacturing costs.The connecting portion 1612b can also be detachably connected to the lower shell 1612, and the connecting portion 1612b can be selected according to different lower shells 1612 to improve adaptability. More specifically, there are at least two connecting portions 1612b, and they are basically distributed along the width direction. The hoisting portions 1612c are arranged on both sides of the lower shell 1612 along the width direction of the electric all-terrain vehicle 100. The arrangement of the hoisting portions 1612c can facilitate the transportation of the power battery 161 by hoisting when assembling the power battery 161 of the electric all-terrain vehicle 100, thereby reducing the difficulty of transporting the power battery 161 and thereby improving the work efficiency of installing the power battery 161. More specifically, the hoisting portion 1612c is provided with at least four hoisting portions.

[0035] like Figure 4 and Figure 5 As shown, as one implementation, the battery assembly 16 also includes a temperature control device 162. When viewed along the length of the electric ATV 100, the temperature control device 162 at least partially overlaps with the power battery 161. The transmission assembly 13 includes a rear drive axle 133 at least partially disposed between the third wheel 1421 and the fourth wheel 1422. The power battery 161, temperature control device 162, and rear drive axle 133 are generally distributed along the length of the electric ATV 100. The temperature control device 162 is at least partially located between the power battery 161 and the rear drive axle 133, and is positioned adjacent to the power battery 161. The compact arrangement of the temperature control device 162 and the power battery 161 facilitates a more compact structure of the temperature control device 162 and the power battery 161, saving space on the electric ATV 100. It also shortens the piping and wiring connecting the temperature control device 162 and the power battery 161, improving the safety of the electric ATV 100 and saving costs. The temperature control device 162 includes a circulation line 1621 for regulating the temperature of the power battery 161. The coolant in the circulation line 1621 can circulate between the temperature control device 162 and the power battery 161. Specifically, the circulation line 1621 includes an internal circulation line (not shown) provided within the power battery 161 and an external circulation line 1621a provided within the temperature control device 162. The internal circulation line and the external circulation line 1621a are connected via a connection port 1614 provided on the rear side of the power battery 161. It should be noted that because the internal circulation line and the external circulation line 1621a are interconnected, they will be collectively referred to as the circulation line 1621 in the following description, and no specific distinction will be made between the internal circulation line and the external circulation line 1621a.

[0036] The temperature control device 162 includes a cooling element 1622, a heating element 1623, a heat exchanger 1624, a water pump 1625, and a water tank 1626. The circulation line 1621 at least partially flows through the heating element 1623, and the coolant in the circulation line 1621 is heated by the heating element 1623. Furthermore, the circulation line 1621 is also connected to a water pump 1625 for providing circulating water pressure and a water tank 1626 for balancing the coolant capacity. The cooling element 1622 includes a refrigerant line 1627 for refrigerant circulation. The circulation line 1621 and the refrigerant line 1627 both flow through the heat exchanger 1624 and can achieve heat exchange in the heat exchanger 1624. The cooling and heating of the power battery 161 are achieved through a closed-loop piping loop and are not affected by other circuits. While ensuring the working efficiency of the power battery 161, the length of the pipeline can be reduced to a certain extent and the complexity of the connection can be reduced to reduce the overall cost of the electric all-terrain vehicle 100. The heat exchanger 1624 is located above the heating element 1623 and the cooling element 1622 to avoid the distance between the heat exchanger 1624 and the heating element 1623 or the cooling element 1622 being too close, which causes the heat exchanger 1624 and the heating element 1623 or the cooling element 1622 to interfere with each other, which is beneficial to improving the working stability of the heat exchanger 1624, the heating element 1623 and the cooling element 1622. Specifically, the heating element 1623 is arranged in front of the cooling element 1622. The forward arrangement of the heating element 1623 can shorten the length of the circulation pipeline 1621 and also improve the working efficiency of the temperature control device 162. Compared to the heating element 1623, the cooling element 1622 is larger in size and requires cooling the coolant in the circulation line 1621 through the heat exchanger 1624. The rearward position of the cooling element 1622 has a relatively small impact on cooling efficiency. Placing the heating element 1623 in front of the cooling element 1622 not only reduces the length of the circulation line 1621 but also improves the heating efficiency of the heating element 1623 while ensuring the cooling efficiency of the cooling element 1622. More specifically, the cooling element 1622 can be configured as a compressor, and the heating element 1623 can be configured as a PTC heater. The water pump 1625 is used to provide circulating water pressure. Positioning the water pump 1625 close to the power battery 161 allows for better pumping of the coolant, ensuring its circulation within the line. A water reservoir 1626 is connected to the heat exchanger 1624 and the water pump 1625 via a pipeline, replenishing the coolant in the circulation line 1621. The above arrangement can reduce the length of the pipeline in the temperature control device 162 and reduce the pipeline cost.Furthermore, the water tank 1626 at least partially overlaps with the water pump 1625, and the water tank 1626 is arranged above the water pump 1625, so that the coolant can flow from the water tank 1626 to the circulation pipeline 1621 under the action of gravity, ensuring the liquid level balance in the circulation pipeline, further strengthening the circulation of the coolant in the temperature control device 162, improving the working efficiency of the temperature control device 162, and helping to improve the overall energy utilization rate of the electric all-terrain vehicle 100.

[0037] Each component of the temperature control device 162 is provided with a gap between it and the power battery 161. This prevents elastic deformation of the mounting frame due to vibrations on bumpy roads and interference between the temperature control device 162 and the power battery 161, thereby improving the durability of the temperature control device 162 and the power battery 161. Specifically, in the temperature control device 162, the heater 1623 and the water pump 1625 are positioned close to the power battery. A gap is formed between the heater 1623 and the water pump 1625 and the power battery 161, preventing them from interfering with each other. Furthermore, since both the heater 1623 and the water pump 1625 generate heat during operation, the gap reduces the amount of heat transferred from the heater 1623 and the water pump 1625 to the power battery.

[0038] like Figure 6 and Figure 7 As shown in FIG. 1 , as an implementation, the electric all-terrain vehicle 100 includes a control system 17, which includes a vehicle controller 171. The vehicle controller 171 is used to control the operation of the electric all-terrain vehicle 100. Figure 6As shown, the vehicle controller 171 is disposed between the power battery 161 and the seat assembly 15. When viewed along the height direction of the electric all-terrain vehicle 100, the vehicle controller 171 is disposed so as to substantially overlap with the power battery 161 and the seat assembly 15, respectively. Specifically, the projection of the vehicle controller 171 along the height direction of the electric all-terrain vehicle 100 onto the reference plane 101 is substantially within the projection range of the power battery 161 along the height direction of the electric all-terrain vehicle 100 onto the reference plane 101. Similarly, the projection of the vehicle controller 171 along the height direction onto the reference plane is substantially within the projection range of the seat along the height direction of the electric all-terrain vehicle 100 onto the reference plane. The vehicle controller 171 is relatively small, allowing it to be installed in the gap between the power battery 161 and the seat assembly 15. This placement protects the vehicle controller 171, preventing it from being damaged by bumps and collisions during the operation of the electric all-terrain vehicle 100. This gap also keeps the vehicle controller 171 away from dust and sand raised by the electric all-terrain vehicle 100, ensuring its cleanliness. Once installed in this gap, the vehicle controller 171 can be easily exposed by opening the seat assembly 15, reducing the difficulty of installing, maintaining, or replacing the vehicle controller 171. Specifically, the vehicle controller 171 can be directly secured to the bottom of the seat assembly 15, directly secured to the top of the power battery 161, or indirectly secured to the bottom of the seat assembly 15 or the top of the power battery 161 via a mounting bracket or other fasteners.

[0039] Figure 7As shown, the vehicle controller 171 includes a vehicle control module (not shown) and a battery thermal management module 1711. The vehicle control module 171 is used to control the operation of the electric all-terrain vehicle 100. The battery thermal management module 1711 is used to regulate the operating temperature of the power battery 161, improving the stability of the operating temperature of the power battery 161 and ensuring that the power battery 161 always operates at an appropriate temperature. The battery assembly 16 includes a power management device 163 and a battery temperature sensor 164. The power management device 163 controls the overall operation of the power battery 161, particularly the charging and discharging of the power battery 161, ensuring that the power battery 161 operates in a stable state and avoids malfunctions and hazards. The temperature of the power battery 161 is an important monitoring target during operation, and the temperature of the power battery 161 can better reflect the operating status of the power battery 161. A battery temperature sensor 164 is provided in the power battery 161 to obtain the overall temperature of the power battery 161 and the temperature of the battery modules therein, thereby effectively monitoring the operating status of the power battery 161. At the same time, a battery temperature sensor 164 can also be installed directly in the circulation line 1621 of the power battery 161. This can directly detect and obtain the temperature of the coolant through the battery temperature sensor 164, ensuring the stable operation of the coolant in the circulation line 1621 and promptly detecting any operational problems with the power battery 161. The power management device 163 is connected to the battery temperature sensor 164 and can obtain the temperature of the battery modules in the power battery 161 and the temperature of the coolant in the circulation line 1621. At least a portion of the power management device 163 is connected to the battery thermal management module 1711, and the power management device 163 transmits temperature data of the battery modules in the power battery 161 and the temperature of the coolant in the circulation line 1621 to the battery thermal management module 1711.

[0040] Temperature control device 162 also includes a pressure sensor 1627a located in refrigerant line 1627. Pressure sensor 1627a is connected to battery thermal management module 1711 and transmits the refrigerant pressure in refrigerant line 1627 to battery thermal management module 1711. The pressure in refrigerant line 1627 is closely related to the temperature and operating status of the refrigerant in refrigerant line 1627. Measuring the pressure in refrigerant line 1627 can more accurately determine the overall temperature and operating status of the refrigerant in refrigerant line 1627, providing battery thermal management module 1711 with more information on cooling element control, thereby improving the accuracy of battery thermal management module 1711's control of cooling element 1622. Temperature control device 162 also includes an ambient temperature sensor 1628 for detecting ambient temperature. Ambient temperature sensor 1628 obtains real-time air temperature of the electric all-terrain vehicle 100's environment. Ambient temperature sensor 1628 is connected to battery thermal management module 1711 and transmits the ambient air temperature to battery thermal management module 1711. The battery thermal management module 1711 can perform thermal management on the power battery 161 based on the acquired battery module temperature, coolant temperature, and ambient temperature. These temperatures can be used to detect the operating status of the power battery 161 from various perspectives. Furthermore, the battery thermal management module 1711 can control the temperature control device 162 based on these detected temperature parameters, thereby improving the operating stability of the power battery 161. Furthermore, the ambient temperature can be verified with the battery module temperature and coolant temperature, improving the accuracy of the operating status of the power battery 161 acquired by the battery thermal management module 1711. When the battery temperature sensor 164 detects that the temperature of the power battery 161 is too high, the battery thermal management module 1711 controls the cooling element 1622 and water pump 1625 in the temperature control device 162 to activate, lowering the temperature of the coolant in the circulation line 1621, thereby lowering the temperature of the power battery 161 and ensuring that the power battery 161 operates within an appropriate temperature range. When the battery temperature sensor 164 detects that the temperature of the power battery 161 is too low, the battery thermal management module 1711 controls the heater 1623 and water pump 1625 in the temperature control device 162 to start operating and heat the coolant in the circulation line 1621, thereby raising the temperature of the power battery 161 and ensuring that the power battery 161 operates within a suitable temperature range. The battery thermal management module 1711 can also perform thermal management and control of the temperature control device 162 based on the obtained refrigerant pressure and ambient temperature, thereby meeting the thermal management requirements of the power battery 161 while improving the operating stability of the temperature control device 162 and the power battery 161.

[0041] Temperature control device 162 also includes a radiator 1629 connected to refrigerant line 1627. Radiator 1629 is used to dissipate heat from the refrigerant. Radiator 1629 ensures the proper operation of cooling element 1622 and improves its cooling efficiency. Battery thermal management module 1711 is also electrically connected to heating element 1623, cooling element 1622, water pump 1625, and radiator 1629, enabling independent control of the operation of these elements. Signal transmission between battery thermal management module 1711 and heating element 1623, cooling element 1622, and water pump 1625 in temperature control device 162 can be achieved via a CAN (Controller Area Network) communication connection, a LIN (Local Interconnect Network) communication connection, or a hardwired communication connection. CAN communication offers advantages such as accurate and fast signal and data transmission. Furthermore, using CAN communication allows for faster and more accurate signal transmission. LIN communication also offers relatively high signal and data transmission speeds and information bandwidth, sufficient for controlling the battery thermal management module 1711 and the aforementioned components. Hardwired communication offers the advantages of simplicity and convenience, reducing costs while meeting signal transmission requirements. Similarly, signal transmission between the battery thermal management module 1711 and various devices can be implemented using a combination of the aforementioned signal transmission methods as needed. For example, the battery thermal management module 1711 can use hardwired signals to wake up the heating element 1623 and the cooling element 1622. Furthermore, the battery thermal management module 1711 can use CAN signals to transmit control signals and provide feedback to the heating element 1623 and the cooling element 1622. The battery thermal management module 1711 can also use LIN signals to transmit control signals and provide feedback to the water pump 1625. The battery thermal management module 1711 can also directly control the radiator 1629 in the refrigerant line 1627 using hardwired signals. The battery thermal management module 1711 can select an appropriate and efficient signal transmission method to transmit signals to different devices based on the differences in device types and the differences in the signals transmitted.

[0042] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. An electric all-terrain vehicle, comprising: Frame; a power system, the power system being supported by the vehicle frame; A transmission assembly, the transmission assembly being transmission-connected to the power system; A traveling assembly, the traveling assembly comprising a front wheel and a rear wheel at least partially disposed on the lower side of the frame, at least one of the front wheel and the rear wheel being in transmission connection with the transmission assembly; a seat assembly connected to the frame; A battery assembly, the battery assembly comprising a power battery for providing energy to the power system; Features: The battery assembly is at least partially arranged below the seat assembly, and when observed from the height direction of the all-terrain vehicle, the battery assembly and the seat assembly at least partially overlap; a reference plane perpendicular to the height direction of the electric all-terrain vehicle is defined, and the projection of the seat assembly along the height direction of the electric all-terrain vehicle on the reference plane is defined as the seat projection, and the projection of the power battery along the height direction of the electric all-terrain vehicle on the reference plane is defined as the battery projection, the seat projection is at least partially arranged in front of the battery projection, and the ratio of the area of ​​the overlapping part of the battery projection and the seat projection to the area of ​​the seat projection is greater than or equal to 0.52 and less than or equal to 1.

2. The electric all-terrain vehicle according to claim 1, characterized in that: The transmission assembly includes a front drive axle connected to the front wheel drive, the front drive axle is at least partially arranged in front of the power battery, and the power system is at least partially arranged behind the power battery. The transmission assembly also includes a transmission shaft connecting the front drive axle and the power system, and the transmission shaft is at least partially arranged on the lower side of the power battery.

3. The electric all-terrain vehicle according to claim 2, characterized in that: The transmission assembly also includes a rear drive axle connected to the rear wheel transmission. The front drive axle, the rear drive axle and the power battery are distributed along the length direction of the electric all-terrain vehicle, and the power battery is arranged between the front drive axle and the rear drive axle.

4. The electric all-terrain vehicle according to claim 3, characterized in that: The power battery includes an inwardly recessed accommodation portion, the accommodation portion is arranged to penetrate the power battery along the length direction of the electric all-terrain vehicle, and the transmission shaft is at least partially arranged in the accommodation portion.

5. The electric all-terrain vehicle according to claim 4, characterized in that: When viewed along the width direction of the electric all-terrain vehicle, the transmission shaft and the power battery at least partially overlap; when viewed along the height direction of the electric all-terrain vehicle, the transmission shaft and the power battery at least partially overlap.

6. The electric all-terrain vehicle according to claim 4, characterized in that: The power battery includes a battery shell, which includes an upper shell and a lower shell distributed along the height direction of the electric all-terrain vehicle, and the accommodating portion is arranged at the bottom of the lower shell; a battery base is arranged on the frame, and a mounting seat is arranged on the lower shell, and when the power battery and the frame are in a connected state, the mounting seat is fixedly connected to the battery base.

7. The electric all-terrain vehicle according to claim 6, characterized in that: The mounting seat is provided with a connecting portion, and when the power battery and the vehicle frame are in a connected state, the connecting portion is fixedly connected to the battery base.

8. The electric all-terrain vehicle according to claim 1, characterized in that: The front wheel includes a first wheel and a second wheel distributed along the width direction of the electric all-terrain vehicle, and the rear wheel includes a third wheel and a fourth wheel distributed along the width direction of the all-terrain vehicle. The area enclosed by connecting the center point of the first wheel, the center point of the second wheel, the center point of the third wheel and the center point of the fourth wheel in sequence is defined as a wheel area, and the projection of the wheel area on the reference plane along the height direction of the electric all-terrain vehicle is defined as a wheel projection area. The battery projection is basically arranged within the wheel projection area, and the ratio of the area of ​​the battery projection to the area of ​​the wheel projection area is greater than or equal to 0.09 and less than or equal to 0.

17.

9. The electric all-terrain vehicle according to claim 1, characterized in that: The ratio of the maximum length of the power battery in the width direction of the electric all-terrain vehicle to the maximum length of the frame in the width direction of the electric all-terrain vehicle is greater than or equal to 0.5 and less than or equal to 1.

10. The electric all-terrain vehicle according to claim 1, characterized in that: The electric all-terrain vehicle also includes a vehicle controller, which is arranged between the seat assembly and the power battery. When viewed from the height direction of the electric all-terrain vehicle, the seat assembly, the power battery and the vehicle controller at least partially overlap.

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