A vehicle body and an electric two-wheeled vehicle

Abstract

The embodiment of the application provides a vehicle body and an electric two-wheeled vehicle, the vehicle body is applied to the electric two-wheeled vehicle, the vehicle body comprises a frame, a battery pack, a driving device and a seat bucket; the length direction of the frame is provided with a front end and a rear end, when the electric two-wheeled vehicle is assembled, a front wheel of the electric two-wheeled vehicle and a handlebar of the electric two-wheeled vehicle are connected to the front end of the frame, and a rear wheel of the electric two-wheeled vehicle is connected to the rear end of the frame; the battery pack is arranged on a first side of the frame, the battery pack is connected to the frame, and the first side of the frame is a side of the frame close to a road surface when the electric two-wheeled vehicle runs on the road surface; the driving device is arranged on the first side of the frame, the driving device is connected to the frame, and / or the driving device is connected to the battery pack; and the seat bucket is arranged on a second side of the frame, the seat bucket is connected to the frame, and the second side of the frame is a side of the frame away from the road surface when the electric two-wheeled vehicle runs on the road surface. The scheme improves the stability of the electric two-wheeled vehicle.

Description

Technical Field

[0001] This application relates to the field of two-wheeled vehicles, and more particularly to a vehicle body and an electric two-wheeled vehicle. Background Technology

[0002] In traditional electric motorcycles and other electric two-wheeled vehicles, a welded frame is often used as the main structure. The battery and other components in the electric two-wheeled vehicle are distributed on the frame so that the frame can support the various components on it.

[0003] However, in order to make electric two-wheelers as lightweight as possible, the frame is usually designed to be as small as possible in terms of weight or volume. This results in poor stability of the frame, which is the main structure of the electric two-wheeler, and consequently, poor stability of the electric two-wheeler. Utility Model Content

[0004] In view of this, embodiments of this application provide an integrated toilet seat to at least partially solve the above-mentioned problems.

[0005] According to a first aspect of the present application, a vehicle body is provided for an electric two-wheeled vehicle. The vehicle body includes a frame, a battery pack, a drive unit, and a seat. The two ends of the frame along its length are the front end and the rear end, respectively. When the electric two-wheeled vehicle is assembled, the front wheel and the handlebars are connected to the front end of the frame, and the rear wheel is connected to the rear end of the frame. The battery pack is disposed on a first side of the frame and connected to the frame, wherein the first side of the frame is the side of the frame closest to the road surface when the electric two-wheeled vehicle is traveling on the road. The drive unit is disposed on the first side of the frame and connected to the frame, and / or the drive unit is connected to the battery pack. When the electric two-wheeled vehicle is traveling, the drive unit provides driving force to the rear wheel. The seat is disposed on a second side of the frame and connected to the frame, wherein the second side of the frame is the side of the frame furthest from the road surface when the electric two-wheeled vehicle is traveling on the road.

[0006] In one possible implementation, the frame includes a front frame and a rear frame arranged sequentially along the length of the frame; the front frame and the rear frame are integrally formed, and the ends of the front frame and the rear frame that are close to each other are connected, the end of the front frame away from the rear frame is the front end of the frame, and the end of the rear frame away from the front frame is the rear end of the frame.

[0007] In one possible implementation, the front frame includes a front main frame, a first front connecting strip, and a second front connecting strip; the rear frame includes a rear main frame, a first rear connecting strip, and a second rear connecting strip; the end of the front main frame away from the rear frame is the front end of the vehicle frame; the first end of the first front connecting strip is connected to the end of the front main frame away from the front end; the first end of the second front connecting strip is connected to the end of the front main frame away from the front end; the end of the rear main frame away from the front frame is the rear end of the vehicle frame; the first end of the first rear connecting strip is connected to the end of the rear main frame away from the rear end; the first end of the second rear connecting strip is connected to the end of the rear main frame away from the rear end; the second end of the first front connecting strip is inserted into the first rear connecting strip from the second end of the first rear connecting strip, and the portion of the first front connecting strip inserted into the first rear connecting strip is bolted to the first rear connecting strip; the second end of the second front connecting strip is inserted into the second rear connecting strip from the second end of the second rear connecting strip, and the portion of the second front connecting strip inserted into the second rear connecting strip is bolted to the second rear connecting strip.

[0008] In one possible implementation, the battery pack is bolted to the first front connecting strip, the battery pack is bolted to the second front connecting strip, the battery pack is bolted to the front main frame, the battery pack is bolted to the first rear connecting strip, and the battery pack is bolted to the second rear connecting strip.

[0009] In one possible implementation, at least one outer surface of the battery pack is connected to the vehicle frame, and the at least one outer surface includes the top surface of the battery pack.

[0010] In one possible implementation, the seat bucket is integrally formed and is connected to the rear main frame.

[0011] In one possible implementation, the front side and the bottom surface of the outer wall of the seat bucket are respectively bolted to the rear main frame, wherein the front side of the outer wall of the seat bucket is the side of the outer wall of the seat bucket near the front end of the frame.

[0012] In one possible implementation, the drive unit includes a housing, a motor, and an electronic control unit; the housing is connected to the rear main frame and to the battery pack; the motor and the electronic control unit are disposed within the housing; a three-phase wire is connected between the motor and the electronic control unit, and the three-phase wire is located within the housing; when the electric two-wheeler is in motion, the motor provides driving force to the rear wheel of the electric two-wheeler under the control of the electronic control unit.

[0013] In one possible implementation, the housing is bolted to the rear main frame, and / or the housing is bolted to the battery pack.

[0014] In one possible implementation, an electrical conversion device is connected between the first and second rear connecting strips; the electrical conversion device is electrically connected to the battery pack, and / or the electrical conversion device is electrically connected to the drive device. When the electric two-wheeler is in motion, the electrical conversion device transforms the voltage provided by the battery pack and provides it to the drive device, so that the drive device provides driving force to the rear wheels of the electric two-wheeler. When the electric two-wheeler is charging, the electrical conversion device converts the AC power input to the electric two-wheeler into DC power and charges the battery pack.

[0015] According to a second aspect of the embodiments of this application, an electric two-wheeled vehicle is provided, including a vehicle body, handlebars, a front wheel, and a rear wheel as described in the first aspect or any implementation thereof; the handlebars are connected to the front end of the frame; the front wheel is connected to the front end of the frame; and the rear wheel is connected to the rear end of the frame.

[0016] The electric two-wheeled vehicle body provided according to the embodiments of this application includes a frame, a battery pack, a drive unit, and a seat. The battery pack, drive unit, and seat are all connected to the frame. The battery pack and drive unit are located on a first side of the frame, and / or the battery pack is connected to the drive unit, while the seat is located on a second side of the frame. Therefore, the frame, battery pack, drive unit, and seat are relatively concentrated in the vehicle body, allowing them to support each other and improving the stability of the vehicle body. Furthermore, the connection between the battery pack and drive unit on the same side of the frame further strengthens the vehicle body, thus improving the stability of the electric two-wheeled vehicle. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a front view of a vehicle body according to an embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the structure of an electric two-wheeled vehicle according to an embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the vehicle body with a hidden electric conversion device according to an embodiment of this application.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Frame; 11. Front frame; 111. Front main frame; 112. First front connecting bar; 113. Second front connecting bar; 12. Rear frame; 121. Rear main frame; 122. First rear connecting bar; 123. Second rear connecting bar; 2. Battery pack; 3. Drive unit; 31. Housing; 4. Seat bucket; 5. Power conversion device; 6. Cooling device; 7. Handlebars; 8. Front wheel; 9. Rear wheel. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0024] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0025] The vehicle body and electric two-wheeler provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0026] The vehicle body is used in electric two-wheeled vehicles and is integrally molded, such as electric motorcycles.

[0027] Figure 1 This is a front view of a vehicle body according to an embodiment of this application. Figure 2 This is a structural schematic diagram of an electric two-wheeled vehicle according to an embodiment of this application. Figure 1 and Figure 2 As shown, the vehicle body includes a frame 1, a battery pack 2, a drive unit 3, and a seat 4. The two ends of the frame 1 along its length are the front end and the rear end, respectively. After the electric two-wheeler is assembled, the front wheel 8 and the handlebars 7 are connected to the front end of the frame 1, and the rear wheel 9 is connected to the rear end of the frame 1. The battery pack 2 is located on the first side of the frame 1 and is connected to the frame 1. The drive unit 3 is located on the first side of the frame 1 and is connected to the frame 1, and / or the drive unit 3 is connected to the battery pack 2. When the electric two-wheeler is in motion, the drive unit 3 provides driving force to the rear wheel 9. The seat 4 is located on the second side of the frame 1 and is connected to the frame 1. Specifically, the seat 4 and the frame 1 can be integrally connected or detachably connected, etc. This application embodiment does not limit this. For example, at least part of the structure of the seat 4 and the frame 1 is integrally formed.

[0028] The first side of the frame 1 is the side of the frame 1 that is close to the road surface when the electric two-wheeled vehicle is traveling on the road, and the second side of the frame 1 is the side of the frame 1 that is away from the road surface when the electric two-wheeled vehicle is traveling on the road.

[0029] In this embodiment, the electric two-wheeled vehicle includes a frame 1, a battery pack 2, a drive unit 3, and a seat 4. The battery pack 2, drive unit 3, and seat 4 are all connected to the frame 1. The battery pack 2 and drive unit 3 are located on a first side of the frame 1, and / or the battery pack 2 is connected to the drive unit 3. The seat 4 is located on a second side of the frame 1. Therefore, the frame 1, battery pack 2, drive unit 3, and seat 4 are relatively concentrated in the vehicle body, allowing them to support each other and improving the stability of the vehicle body. Furthermore, the connection between the battery pack 2 and drive unit 3 on the same side of the frame 1 further strengthens the vehicle body, thus improving the stability of the electric two-wheeled vehicle.

[0030] Furthermore, the relatively concentrated frame 1, battery pack 2, drive unit 3, and seat bucket 4 lights can improve the space utilization, overall rigidity, stability, consistency, and handling of electric two-wheelers, and can also make electric two-wheelers lighter.

[0031] In one possible implementation, such as Figure 1 As shown, the frame 1 includes a front frame 11 and a rear frame 12 arranged sequentially along the length of the frame 1. The front frame 11 and the rear frame 12 are integrally formed. For example, both the front frame 11 and the rear frame 12 can be integrally cast from magnesium-aluminum alloy. The ends of the front frame 11 and the rear frame 12 that are close to each other are connected. The ends of the front frame 11 and the rear frame 12 that are close to each other can be integrally connected or detachably connected, etc. The embodiments of this application do not limit this. For example, the front frame 11 and the rear frame 12 are integrally formed. The end of the front frame 11 away from the rear frame 12 is the front end of the frame 1, and the end of the rear frame 12 away from the front frame 11 is the rear end of the frame 1.

[0032] In this embodiment, the frame 1 is formed by connecting an integrally formed front frame 11 and an integrally formed rear frame 12, which facilitates the production of the frame 1, reduces the defect rate of the frame 1, improves the quality of the frame 1, and reduces costs.

[0033] Figure 3 This is a schematic diagram of the vehicle body structure with a concealed electric conversion device according to an embodiment of this application. Figure 3As shown, the front frame 11 includes a front main frame 111, a first front connecting bar 112, and a second front connecting bar 113; the rear frame 12 includes a rear main frame 121, a first rear connecting bar 122, and a second rear connecting bar 123. The end of the front main frame 111 furthest from the rear frame 12 is the front end of the vehicle frame 1. The first end of the first front connecting bar 112 is connected to the end of the front main frame 111 furthest from the front end, and the first end of the second front connecting bar 113 is connected to the end of the front main frame 111 furthest from the front end. The end of the rear main frame 121 furthest from the front frame 11 is the rear end of the vehicle frame 1. The first end of the first rear connecting bar 122 is connected to the end of the rear main frame 121 furthest from the front end. At the rear end connection, the first end of the second rear connecting strip 123 is connected to the end of the rear main frame 121 away from the rear end. The second end of the first front connecting strip 112 is inserted into the first rear connecting strip 122 from the second end of the first rear connecting strip 122, and the portion of the first front connecting strip 112 inserted into the first rear connecting strip 122 is bolted to the first rear connecting strip 122. The second end of the second front connecting strip 113 is inserted into the second rear connecting strip 123 from the second end of the second rear connecting strip 123, and the portion of the second front connecting strip 113 inserted into the second rear connecting strip 123 is bolted to the second rear connecting strip 123.

[0034] Therefore, during the assembly of the frame 1, the second end of the first front connecting strip 112 of the front frame 11 is directly inserted into the first rear connecting strip 122 of the rear frame 12 from the second end of the first rear connecting strip 122, and the second end of the second front connecting strip 113 of the front frame 11 is inserted into the second rear connecting strip 123 of the rear frame 12 from the second end of the second rear connecting strip 123. Then, the portion of the first front connecting strip 112 inserted into the first rear connecting strip 122 is connected to the first rear connecting strip 122 by bolts, and the portion of the second front connecting strip 113 inserted into the second rear connecting strip 123 is also connected to the second rear connecting strip 123 by bolts. This achieves a detachable connection between the front frame 11 and the rear frame 12, which is convenient, quick, and has good connection stability, thus improving the assembly efficiency and quality of the frame 1.

[0035] In one possible implementation, such as Figure 3 As shown, battery pack 2 is bolted to the first front connecting strip 112, battery pack 2 is bolted to the second front connecting strip 113, battery pack 2 is bolted to the front main frame 111, battery pack 2 is bolted to the first rear connecting strip 122, and battery pack 2 is bolted to the second rear connecting strip 123.

[0036] In this embodiment, the battery pack 2 is connected to the front frame 11 via the first front connecting strip 112 and the second front connecting strip 113, and to the rear frame 12 via the first rear connecting strip 122 and the second rear connecting strip 123. This can reinforce the frame 1 and improve the stability of the vehicle body. Furthermore, the battery pack 2 is bolted to the frame 1, so when the battery pack 2 is repaired or disassembled, it can be directly removed from the frame 1. Compared to the scheme where the front frame 11 and the rear frame 12 are connected via the battery pack 2, in this application, removing the battery pack 2 from the frame 1 does not require damaging the structure of the frame 1, which facilitates the repair of the battery pack 2.

[0037] In one possible implementation, at least one outer surface of the battery pack 2 is connected to the vehicle frame 1. The at least one outer surface includes the top surface of the battery pack 2, and may also include the top surface and side surface of the battery pack, etc.

[0038] In one example, the front side of the battery pack 2 can be provided with two first lifting lugs, and the top surface of the battery pack 2 can be provided with four second lifting lugs. The front main frame 111 is bolted to the first lifting lugs. The first front connecting strip 112, the second front connecting strip 113, the first rear connecting strip 122, and the second rear connecting strip 123 are respectively bolted to different second lifting lugs. The front side of the battery pack 2 is the side of the battery pack 2 near the front wheel 8 after the electric two-wheeled vehicle is assembled, and the top surface of the battery pack 2 is the top surface of the battery pack 2 when the electric two-wheeled vehicle is in motion.

[0039] Optionally, the battery pack 2 can be manufactured by processes such as extrusion or casting, which is not limited in this embodiment.

[0040] In one possible implementation, such as Figure 1 As shown, the seat bucket 4 is integrally formed. For example, the seat bucket 4 can be made of one-piece aluminum-magnesium alloy casting. The seat bucket 4 is connected to the rear main frame 121. The seat bucket 4 and the rear main frame 121 can be integrally connected or detachably connected, etc. For example, the seat bucket 4 and the rear main frame 121 are integrally formed. Compared with the seat bucket 4 made by assembly and welding, the seat bucket 4 of this application can also reduce the dimensional deviation caused by welding and assembly. While reducing weight, it improves the space utilization, consistency, reliability, stability and durability of the seat bucket 4.

[0041] In one possible implementation, such as Figure 1 As shown, the front side and bottom surface of the outer wall of the seat bucket 4 are bolted to the rear main frame 121, wherein the front side of the outer wall of the seat bucket 4 is the side of the outer wall of the seat bucket 4 that is close to the front end of the frame 1.

[0042] In one example, a third lifting lug is provided on the front side of the outer wall of the seat bucket 4, and a fourth lifting lug is provided on the bottom surface of the outer wall of the seat bucket 4. Both the third and fourth lifting lugs can be integrally formed with the seat bucket 4, and both the third and fourth lifting lugs are bolted to the rear main frame 121.

[0043] Therefore, the seat bucket 4 is detachable from the rear main frame 121, which facilitates the installation and removal of the seat bucket 4 from the frame 1.

[0044] In one possible implementation, such as Figure 1 As shown, the drive unit 3 includes a housing 31, a motor, and an electronic control unit; the housing 31 is connected to the rear main frame 121, and / or the housing 31 is connected to the battery pack 2. The motor and the electronic control unit are located inside the housing 31, and a three-phase wire is connected between the motor and the electronic control unit. The three-phase wire is located inside the housing 31. When the electric two-wheeled vehicle is in motion, the motor provides driving force to the rear wheel 9 of the electric two-wheeled vehicle under the control of the electronic control unit.

[0045] Thus, the drive unit 3 achieves integrated motor and electronic control, improving the space utilization of the drive unit 3.

[0046] In one possible implementation, such as Figure 1 As shown, the housing 31 is bolted to the rear main frame 121, and / or the housing 31 is bolted to the battery pack 2.

[0047] In one example, the rear side of the battery pack 2 can be provided with two fifth lifting lugs, and the housing 31 is bolted to the fifth lifting lugs. The side of the housing 31 near the battery pack 2 can be provided with six sixth lifting lugs, and the battery pack 2 is bolted to the second lifting lugs. The top surface of the housing 31 can be provided with six seventh lifting lugs, and the rear frame 12 is bolted to the seventh lifting lugs. The rear side of the battery pack 2 is the side of the battery pack 2 near the rear wheel 9 after the electric two-wheeled vehicle is assembled, and the top surface of the housing 31 is the top surface of the housing 31 when the electric two-wheeled vehicle is in motion.

[0048] Therefore, when the drive unit 3 needs to be repaired or disassembled, the housing 31 can be directly removed relative to the rear main frame 121 and the battery pack 2 to disassemble the drive unit 3, which is convenient and quick.

[0049] In one possible implementation, such as Figure 1 and Figure 3 As shown, an electrical conversion device 5 is connected between the first rear connecting strip 122 and the second rear connecting strip 123. For example, the electrical conversion device 5 can be bolted between the first rear connecting strip 122 and the second rear connecting strip 123, and bolted to the first rear connecting strip 122 and the second rear connecting strip 123.

[0050] The power conversion device 5 is electrically connected to the battery pack 2 and the drive device 3. When the electric two-wheeler is in motion, the power conversion device 5 transforms the voltage provided by the battery pack 2 and supplies it to the drive device 3 so that the drive device 3 provides driving force to the rear wheel 9 of the electric two-wheeler. When the electric two-wheeler is charging, the power conversion device 5 converts the AC power input to the electric two-wheeler into DC power and charges the battery pack 2.

[0051] In one specific example, the power conversion device 5 may include a DC-DC converter (DCDC converter) and an on-board charger (OBC). The DC-DC converter is used to transform the voltage provided by the battery pack 2 and then provide it to the drive unit 3 so that the drive unit 3 provides driving force to the rear wheel 9 of the electric two-wheeler. The OBC is used to convert the AC power input to the electric two-wheeler into DC power and then charge the battery pack 2 when the electric two-wheeler is charging.

[0052] Therefore, the electric conversion device 5 can be set between the first rear connecting strip 122 and the second rear connecting strip 123, thereby improving the space utilization of the vehicle body.

[0053] Optionally, such as Figure 2 As shown, when the electric two-wheeler is in motion, the electric conversion device 5 is located above the battery pack 2.

[0054] Optionally, such as Figure 2 As shown, a heat dissipation device 6 can be installed near the front side of the battery pack 2. The heat dissipation device 6 can be bolted to the front main frame 111 and / or connected to the battery pack 2. When the electric two-wheeled vehicle is in motion, the heat dissipation device 6 can dissipate heat from the battery pack 2.

[0055] Optionally, such as Figure 2 As shown, after the electric two-wheeler is assembled, the front main frame 111 can be assembled with the front wheel 8 assembly via the front suspension assembly, and the rear main frame 121 can be assembled with the rear wheel 9 assembly via the rear suspension assembly. This allows the front wheel 8 and the handlebars 7 of the electric two-wheeler to be connected to the front end of the frame 1, and the rear wheel 9 of the electric two-wheeler to be connected to the rear end of the frame 1. For example, the front suspension assembly can include a front fork, handlebars 7, and shock absorbers, etc. The front suspension assembly is assembled with the front main frame 111 via bearings and mounting bolts, and with the front wheel 8 via the front axle. The rear suspension assembly can include a rear swingarm assembly and a rear shock absorber assembly, etc., and is assembled with the motor via bearings, and with the rear wheel 9 via the rear axle.

[0056] This application also provides an electric two-wheeled vehicle. For example... Figure 2 As shown, the electric two-wheeled vehicle includes the aforementioned vehicle body, handlebars 7, front wheel 8, and rear wheel 9; handlebars 7 are connected to the front end of the frame 1; front wheel 8 is connected to the front end of the frame 1; and rear wheel 9 is connected to the rear end of the frame 1.

[0057] The specific structure of the electric two-wheeler has been described above and will not be repeated here.

[0058] It should be noted that the electric two-wheeled vehicle in this embodiment includes the vehicle body in the aforementioned embodiments and has corresponding beneficial effects, which will not be repeated here.

[0059] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0060] Finally, it should be noted that the above are merely preferred embodiments of the present invention, used only to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A vehicle body, characterized in that, Applied to electric two-wheeled vehicles, the vehicle body includes a frame (1), a battery pack (2), a drive unit (3), and a seat (4); The two ends of the frame (1) in the length direction are the front end and the rear end of the frame (1), respectively. After the electric two-wheeled vehicle is assembled, the front wheel (8) and the handlebar (7) of the electric two-wheeled vehicle are connected to the front end of the frame (1), and the rear wheel (9) of the electric two-wheeled vehicle is connected to the rear end of the frame (1). The battery pack (2) is disposed on the first side of the frame (1) and the battery pack (2) is connected to the frame (1). The first side of the frame (1) is the side of the frame (1) that is close to the road surface when the electric two-wheeled vehicle is traveling on the road. The drive unit (3) is disposed on the first side of the frame (1), the drive unit (3) is connected to the frame (1), and / or the drive unit (3) is connected to the battery pack (2). When the electric two-wheeled vehicle is in motion, the drive unit (3) provides driving force to the rear wheel (9) of the electric two-wheeled vehicle. The seat bucket (4) is located on the second side of the frame (1) and is connected to the frame (1). The second side of the frame (1) is the side of the frame (1) away from the road surface when the electric two-wheeled vehicle is traveling on the road.

2. The vehicle body according to claim 1, characterized in that, The frame (1) includes a front frame (11) and a rear frame (12) arranged sequentially along the length of the frame (1); The front frame (11) is integrally formed, the rear frame (12) is integrally formed, the ends of the front frame (11) and the rear frame (12) are connected close to each other, the end of the front frame (11) away from the rear frame (12) is the front end of the frame (1), and the end of the rear frame (12) away from the front frame (11) is the rear end of the frame (1).

3. The vehicle body according to claim 2, characterized in that, The front frame (11) includes a front main frame (111), a first front connecting strip (112) and a second front connecting strip (113), and the rear frame (12) includes a rear main frame (121), a first rear connecting strip (122) and a second rear connecting strip (123); The end of the front main frame (111) away from the rear frame (12) is the front end of the frame (1). The first end of the first front connecting strip (112) is connected to the end of the front main frame (111) away from the front end. The first end of the second front connecting strip (113) is connected to the end of the front main frame (111) away from the front end. The rear main frame (121) is located away from the front frame (11) at one end, which is the rear end of the frame (1). The first end of the first rear connecting strip (122) is connected to the end of the rear main frame (121) away from the rear end, and the first end of the second rear connecting strip (123) is connected to the end of the rear main frame (121) away from the rear end. The second end of the first front connecting strip (112) is inserted into the first rear connecting strip (122) from the second end of the first rear connecting strip (122), and the portion of the first front connecting strip (112) inserted into the first rear connecting strip (122) is bolted to the first rear connecting strip (122). The second end of the second front connecting strip (113) is inserted into the second rear connecting strip (123) from the second end of the second rear connecting strip (123), and the portion of the second front connecting strip (113) inserted into the second rear connecting strip (123) is bolted to the second rear connecting strip (123).

4. The vehicle body according to claim 3, characterized in that, The battery pack (2) is bolted to the first front connecting strip (112), the battery pack (2) is bolted to the second front connecting strip (113), the battery pack (2) is bolted to the front main frame (111), the battery pack (2) is bolted to the first rear connecting strip (122), and the battery pack (2) is bolted to the second rear connecting strip (123).

5. The vehicle body according to any one of claims 1-3, characterized in that, At least one outer surface of the battery pack (2) is connected to the vehicle frame (1), and the at least one outer surface includes the top surface of the battery pack (2).

6. The vehicle body according to claim 3, characterized in that, The seat bucket (4) is integrally formed and is connected to the rear main frame (121).

7. The vehicle body according to claim 6, characterized in that, The front side of the outer wall of the seat bucket (4) and the bottom side of the outer wall of the seat bucket (4) are respectively bolted to the rear main frame (121), wherein the front side of the outer wall of the seat bucket (4) is the side of the outer wall of the seat bucket (4) near the front end of the frame (1).

8. The vehicle body according to claim 3, characterized in that, The drive unit (3) includes a housing (31), a motor, and an electronic control unit; The housing (31) is connected to the rear main frame (121) and the housing (31) is connected to the battery pack (2). The motor and the electronic control unit are located inside the housing (31). A three-phase line is connected between the motor and the electronic control unit. The three-phase line is located inside the housing (31). When the electric two-wheeled vehicle is in motion, the motor provides driving force to the rear wheel (9) of the electric two-wheeled vehicle under the control of the electronic control unit.

9. The vehicle body according to claim 8, characterized in that, The housing (31) is bolted to the rear main frame (121), and / or the housing (31) is bolted to the battery pack (2).

10. The vehicle body according to claim 3, characterized in that, An electrical conversion device (5) is connected between the first rear connecting bar (122) and the second rear connecting bar (123); The power conversion device (5) is electrically connected to the battery pack (2) and / or the power conversion device (5) is electrically connected to the drive device (3). When the electric two-wheeled vehicle is in motion, the power conversion device (5) transforms the voltage provided by the battery pack (2) and provides it to the drive device (3) so that the drive device (3) provides driving force to the rear wheel (9) of the electric two-wheeled vehicle. When the electric two-wheeled vehicle is charging, the power conversion device (5) converts the AC power input to the electric two-wheeled vehicle into DC power and charges the battery pack (2).

11. An electric two-wheeled vehicle, characterized in that, Includes the vehicle body, handlebars (7), front wheel (8), and rear wheel (9) as described in any one of claims 1-10; The handlebars (7) are connected to the front end of the frame (1); The front wheel (8) is connected to the front end of the frame (1); The rear wheel (9) is connected to the rear end of the frame (1).

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