A frame assembly and a motorcycle

Abstract

This invention relates to the field of motorcycle technology, specifically disclosing a frame assembly and a motorcycle. The frame assembly includes a frame body and a battery housing mounted on the frame body. The frame body includes a head tube and left and right supports located on either side of the head tube. Both the left and right supports include an upper crossbeam, a lower crossbeam, and a support beam, with the support beam located at the bottom. The upper and lower crossbeams are located on the side of the battery. The upper crossbeam has an elliptical cross-section, with the major axis of the elliptical cross-section vertical and the minor axis horizontal. The two support beams are fixedly connected at their ends away from the head tube via shock absorber mounting seats. One end of the upper crossbeam is fixedly connected to the head tube, and the other end is fixedly connected to the support beam. This solution addresses the problems of insufficient battery protection strength in current electric motorcycle battery placement and the impact of excessive vibration on the frame strength of existing electric motorcycles.

Description

Technical Field

[0001] This invention relates to the field of motorcycle technology, specifically to a frame assembly and a motorcycle. Background Technology

[0002] With the shift from gasoline-powered motorcycles to electric motorcycles, electric motorcycles are becoming increasingly popular. Compared to gasoline-powered motorcycles, electric motorcycles no longer need a fuel tank; instead, they use batteries to provide energy. Existing technologies for this transition include designs where the original fuel tank location is directly designed as the battery mounting location. For example, patent publication number CN211167255U describes a high-performance electric motorcycle chassis structure where the battery is placed in the fuel tank location of a gasoline-powered motorcycle. This method makes reasonable use of the space previously occupied by the fuel tank. However, because the battery structure is square, large, and heavy, it is placed on the mounting beam (i.e., support beam) at the bottom of the frame in CN211167255U. Near the bottom of the frame, on the side of the battery, there is no protective tube. This means that if the electric motorcycle tips over, the battery is easily impacted by the ground, posing a safety hazard if the battery suffers excessive impact.

[0003] In addition, because the batteries in electric motorcycles are heavier, the overall weight of the electric motorcycle is heavier. Under the same road conditions and driving conditions, the frame of the electric motorcycle is subjected to more severe vibrations, which affects the frame strength of the electric motorcycle. Summary of the Invention

[0004] The present invention aims to provide a frame assembly and a motorcycle to solve the problems of insufficient battery protection strength in the current electric motorcycle battery placement and the impact of excessive vibration on the frame strength of existing electric motorcycles.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A vehicle frame assembly includes a frame body and a battery housing mounted on the frame body. The frame body includes a head tube and a left bracket and a right bracket located on both sides of the head tube. Both the left and right brackets include an upper crossbeam, a lower crossbeam, and a support beam. The support beam is located at the bottom. The upper and lower crossbeams are located on the side of the battery. The cross-section of the upper crossbeam is elliptical, with the major axis of the elliptical cross-section in the vertical direction and the minor axis in the horizontal direction. The two support beams are fixedly connected at the ends away from the head tube by a shock absorber mounting seat. One end of the upper crossbeam is fixedly connected to the head tube, and the other end of the upper crossbeam is fixedly connected to the end of the support beam away from the head tube.

[0007] The principle and advantages of this solution are as follows: When using this invention, the conventional round tube of the frame body is replaced with an elliptical tube for the upper crossbeam. While maintaining the original battery placement space, that is, with the minor axis of the elliptical upper crossbeam being basically the same as the diameter of the round tube, the cross-sectional area of ​​the elliptical tube is larger, resulting in higher strength of the upper crossbeam. At the same time, one end of the upper crossbeam is connected to the head tube, and the other end is connected to the end of the support beam. The end of the support beam is connected to the shock absorber mounting seat, on which the shock absorber is installed. When the head tube is subjected to the impact from the front wheel, the vibration generated by the frame can be quickly transmitted through the upper crossbeam to the shock absorber installed at the end of the support beam. The vibration can also be quickly transmitted from the lower crossbeam to other parts of the frame assembly. This disperses the vibration caused by the impact to various parts of the frame body and allows the energy of the vibration to be quickly absorbed by the shock absorber, greatly improving the shock absorption performance of the frame assembly.

[0008] In addition, the elliptical upper crossbeam design provides a larger contact area for other tubes that connect to it vertically. This increases the connection strength between the upper crossbeam and other tubes, and with a larger contact area with other tubes, it also makes it easier to transmit vibrations to other parts of the frame assembly when it vibrates, further improving the strength and shock absorption performance of the frame assembly.

[0009] In addition, the left and right brackets of the present invention, which have upper and lower crossbeams, are located on both sides of the battery, so that the upper and lower crossbeams protect the sides of the battery at the same time, ensuring that the battery will not be directly impacted after the electric motorcycle overturns, thus reducing the safety hazards caused by vehicle overturning.

[0010] Preferably, as an improvement, the end of the upper crossbeam connected to the supporting beam is machined with a deformation groove that runs through the short axis of the upper crossbeam.

[0011] Preferably, as an improvement, a first reinforcing member and a second reinforcing member are provided between the upper crossbeam and the lower crossbeam, and the distance between the first reinforcing member and the second reinforcing member at the end connecting the upper crossbeam is smaller than the distance between the end connecting the lower crossbeam.

[0012] Preferably, as an improvement, a bottom support tube and a rear support tube are fixedly connected between the left bracket and the right bracket; the battery compartment is placed above the bottom support tube and fixedly connected to the bottom support tube, and the rear support tube is located at the rear side of the battery compartment and fixedly connected to the rear side of the battery compartment.

[0013] Preferably, as an improvement, a rear connecting plate is fixed to the rear side of the battery housing, and a rear connector is placed upright and fixed on the rear support tube. Both the rear connecting plate and the rear connector are machined with arc-shaped contact bottom surfaces, and the projection of the arc-shaped contact bottom surfaces along the cross-section of the rear support tube is U-shaped.

[0014] Preferably, as an improvement, the frame body is fixed with multiple motor suspension mounting parts, which are used to form a fixed connection with the motor at different heights. Among the multiple motor suspension mounting parts, at least two motor suspension mounting parts diagonally opposite each other are inclined, with the inclination direction facing outwards from the motor.

[0015] Preferably, as an improvement, the battery housing is installed on the upper left of the vehicle frame body, the motor can be installed on the lower right of the battery housing, and a controller mounting frame is also fixed on the vehicle frame body. The controller mounting frame is fixed between the two support beams and is located below the battery housing.

[0016] Preferably, as an improvement, ventilation panels can be installed on the front and bottom of the frame body, and the rear of the frame body is unobstructed.

[0017] Preferably, as an improvement, the battery housing is installed at an angle, with the downward side of the battery housing facing the motor. The frame body also includes a rear support located behind the left and right supports. A battery charging converter can be fixedly installed on the rear support, and the converter is installed at a position not lower than the bottom of the battery housing.

[0018] The present invention also provides a motorcycle, including a frame assembly, on which a household 220V charging socket and a 220V charging socket for a charging gun are mounted.

[0019] Compared with the prior art, the present invention also has the following advantages:

[0020] 1. In this invention, a deformation groove is machined at one end of the upper crossbeam that connects to the support beam, extending through the short axis of the upper crossbeam. This allows the upper crossbeam to shorten the length of its long axis when connected to the support beam, facilitating the overlapping and fixing of the upper crossbeam and the support beam and improving the stability of their connection. Furthermore, the deformation groove allows some of the impact energy borne by the upper crossbeam to be released, further improving the shock absorption effect of the frame.

[0021] 2. The reinforcement components one and two of this invention, together with the upper and lower crossbeams, form a separate support frame with higher structural strength on the frame assembly, improving the overall strength of the frame. Furthermore, they enhance the protection of the battery. The crossbeams, at the end near the head tube, form a bent section that approaches the center of the electric motorcycle. These two V-shaped bends not only protect the front side of the battery within the frame but also further improve the strength of the frame.

[0022] 3. In this invention, a bottom support tube and a rear support tube are fixedly connected between the left and right brackets. The bottom and rear support tubes provide direct support for the battery housing and also protect the bottom and rear of the battery. Furthermore, the rear support tube simultaneously supports the rear connecting plate and the rear connector, improving the connection and support strength of the rear support tube for the battery housing. In addition, the arc-shaped contact bottom surface projects a U-shape along the cross-section of the rear support tube, ensuring that the rear support tube not only provides support strength for the battery housing but also limits the battery housing in the front-back direction and vertical height, thus ensuring the stability of the battery housing during the formation of the electric motorcycle.

[0023] 4. In this invention, there are multiple motor suspension mounting parts, and different motor suspension mounting parts are connected to the motor at different heights. In addition, the motor suspension mounting parts are set with diagonal outward tilt, so that after the motor is installed on the frame, the front, back, left, right, up and down positions of the motor are all limited, ensuring the stability of the motor installation and reducing the generation of vibration.

[0024] 5. In this invention, the battery housing is located on the upper left of the frame body, while the motor is located on the lower right of the frame body. The battery housing is tilted, so that the space directly below the battery housing is occupied by the controller mounted on the controller mounting frame. Since the controller and battery generate a lot of heat, the vertical positioning of the battery housing and controller allows both the battery and controller to directly contact the airflow generated during driving. This not only makes reasonable use of space but also allows both to cool down better. The unobstructed rear of the frame body also allows the motor to cool down quickly during motorcycle driving, ensuring the long-term stability of the motor, battery, and controller and improving their service life.

[0025] 6. In this invention, the battery housing is tilted so that the air after heat exchange with the battery surface can flow downwards at an angle and finally be discharged from the unobstructed rear of the frame body, thus preventing hot air from blowing under the motorcycle seat or onto the rear support of the frame assembly and ensuring that the heat dissipation of the charging converter is not affected.

[0026] 7. The motorcycle of the present invention has a 220V charging socket for charging gun and a household 220V charging socket installed on the frame assembly, which makes it convenient for the motorcycle to be charged with household electricity, and also makes it convenient for electric motorcycles to be charged at charging stations, greatly improving the charging convenience of the motorcycle of the present invention. Attached Figure Description

[0027] Figure 1 This is a front view of the motorcycle of the present invention.

[0028] Figure 2This is a three-dimensional structural diagram of the chassis assembly of the present invention.

[0029] Figure 3 for Figure 2 A schematic diagram of the three-dimensional structure from another perspective.

[0030] Figure 4 for Figure 2 The main view.

[0031] Figure 5 for Figure 2 A schematic diagram of the structure after removing the battery, motor, controller, and converter.

[0032] Figure 6 for Figure 5 The main view.

[0033] Figure 7 for Figure 5 Top view.

[0034] Figure 8 This is a schematic diagram showing the cross-section of the upper and lower crossbeams of the frame assembly of the present invention.

[0035] Figure 9 for Figure 2 A three-dimensional structural diagram of the battery housing, bottom support tube, and rear support tube.

[0036] Figure 10 This is a three-dimensional structural diagram of the battery housing, bottom support tube, and rear support tube of the present invention from another perspective. Detailed Implementation

[0037] The following detailed description illustrates the specific implementation method:

[0038] The reference numerals in the accompanying drawings include: battery housing 10, heat dissipation hole 101, bottom connecting plate 102, rear connecting plate 103, household 220V charging base 20, 220V charging gun charging base 30, front tube 1, left bracket 2, right bracket 3, rear bracket 4, support beam 21, motor suspension mounting part 212, adjustment connector 2121, waist-shaped hole 2122, L-shaped connecting section 211, upper crossbeam 22, deformation groove 221, lower crossbeam 23, reinforcement part one 24, reinforcement part two 25, bottom support tube 5, bottom connector 51, rear support tube 6, rear connector 61, end support tube 7, shock absorber mounting base 8, controller mounting frame 9, motor 40, controller 50, converter 60.

[0039] The basic implementation examples are as follows: Figures 1 to 10 As shown.

[0040] A motorcycle includes a frame assembly and a 220V household charging socket 20 and a 220V charging socket 30 for charging guns, both mounted on the frame assembly. The frame assembly includes a frame body and a battery housing 10 mounted on the frame body. The frame body includes a head tube 1, a left support 2, a right support 3, and a rear support 4. The left support 2 and right support 3 are located between the head tube 1 and the rear support 4, and are symmetrical about the head tube 1. The left support 2 and right support 3 are simultaneously fixedly welded to both the head tube 1 and the rear support 4. Decorative panels are fixed to both the left support 2 and right support 3. The 220V household charging socket 20 and the 220V charging socket 30 for charging guns are respectively mounted on the two decorative panels, which are made of aluminum alloy. The battery housing 10 is used to house batteries. The top of the battery housing 10 is open, and heat dissipation holes 101 are machined on the front and left and right sides of the battery housing 10. The battery housing 10 is located within the space enclosed by the head tube 1, the left bracket 2, and the right bracket 3. The front, rear, left, and right sides of the battery housing 10 are surrounded by the frame body, forming protection for the battery inside the battery housing 10. This ensures that the battery will not be directly impacted after the electric motorcycle overturns, reducing the safety hazards caused by the motorcycle overturning.

[0041] Both the left support 2 and the right support 3 include an upper crossbeam 22, a lower crossbeam 23, and a supporting beam 21. The upper crossbeam 22 and the lower crossbeam 23 form a bent section at the end welded to the head tube 1. The bent sections of the upper crossbeam 22 and the lower crossbeam 23 are close to each other and form a V-shape. The upper crossbeam 22 and the lower crossbeam 23 are located on the left and right sides of the battery housing 10. The cross-section of the upper crossbeam 22 is elliptical, that is, the upper crossbeam 22 is an elliptical tube. The major axis of the elliptical cross-section of the upper crossbeam 22 is located vertically, and the minor axis of the elliptical cross-section of the upper crossbeam 22 is located horizontally. The lower crossbeam 23 and the supporting beam 21 are both made of round tubes.

[0042] The right end of the upper crossbeam 22, which connects to the supporting beam 21, is machined with a deformation groove 221 that runs through the short axis of the upper crossbeam 22. Through the deformation groove 221, the upper crossbeam 22 can shorten its length along the long axis, which facilitates the overlapping and fixing of the upper crossbeam 22 and the supporting beam 21 and improves the stability of their connection. In addition, the deformation groove 221 allows some of the impact energy borne by the upper crossbeam 22 to be released on the deformation groove 221.

[0043] A first reinforcing member 24 and a second reinforcing member 25 are welded between the upper crossbeam 22 and the lower crossbeam 23. The distance between the first reinforcing member 24 and the second reinforcing member 25 at the end connecting the upper crossbeam 22 is less than the distance at the end connecting the lower crossbeam 23.

[0044] The support beam 21 adopts an integrated structure. The projection of the support beam 21 onto the side of the electric motorcycle is U-shaped. The right end of the support beam 21 is bent to form an L-shaped connecting section 211. The two L-shaped connecting sections 211 are close to each other. The L-shaped connecting sections 211 of the left frame and the right frame are combined to form a U-shape. The upper crossbeam 22 is welded to the L-shaped connecting section 211 on the corresponding side. Shock absorber mounting seats 8 are welded on the two L-shaped connecting sections 211. The shock absorber mounting seats 8 are used to install shock absorbers.

[0045] The arrangement of the upper crossbeam 22, lower crossbeam 23, support beam 21, and shock absorber mounting base increases the overall strength of the frame body. Simultaneously, vibrations generated by impacts to the front wheel during motorcycle operation are quickly transmitted via the head tube 1 along the upper crossbeam 22 to the shock absorber mounted at the end of the support beam 21. Vibrations are also rapidly transmitted from the lower crossbeam 23 to the support beam 21, reinforcement component 1 24, and reinforcement component 25, significantly improving the shock absorption performance of the frame assembly. Furthermore, the elliptical tube design of the upper crossbeam 22 allows for a longer contact length with other components it connects to. Vibrations generated on the upper crossbeam 22 are also quickly transmitted along connected components such as reinforcement component 1 24 and reinforcement component 25 to other parts of the frame body, enabling the entire frame assembly to more evenly distribute vibrations and further improving its shock absorption performance.

[0046] The bottom support tube 5 and the rear support tube 6 are fixedly connected between the left bracket 2 and the right bracket 3. The battery container 10 is placed above the bottom support tube 5 and fixedly connected to the bottom support tube 5. The rear support tube 6 is located at the rear of the battery container 10 and fixedly connected to the rear of the battery container 10.

[0047] Specifically, the bottom of the battery housing 10 has a bottom connecting plate 102 bent at the edge of the hole wall opposite to the heat dissipation hole 101. The bottom connecting plate 102 and the bottom support tube 5 are fixedly connected by a bottom connector 51. The bottom connector 51 is U-shaped, with its belly attached to the bottom connecting plate 102 and one of its wings attached to the lower surface of the bottom of the battery housing 10. This provides sufficient support strength for the bottom of the battery housing 10 by the bottom support tube 5. At the same time, the bottom connecting plate 102 acts like a fin on the battery housing 10, which helps to improve the heat dissipation capacity of the battery housing 10.

[0048] A rear connecting plate 103 is welded to the rear side of the battery housing 10. The rear connecting plate 103 is fixedly connected to the rear support tube 6 via a rear connector 61. Both the rear connecting plate 103 and the rear connector 61 have arc-shaped contact bottom surfaces. The rear connecting plate 103 and the rear connector 61 stand upright above the rear support tube 6 via the arc-shaped contact bottom surfaces. The projection of the arc-shaped contact bottom surfaces along the cross-section of the rear support tube 6 is U-shaped. The rear support tube 6 simultaneously supports both the rear connecting plate 103 and the rear connector 61, improving the connection strength and support strength of the rear support tube 6 for the battery housing 10. In addition, the U-shaped projection of the arc-shaped contact bottom surfaces along the cross-section of the rear support tube 6 ensures that the rear support tube 6, while guaranteeing the support strength for the battery housing 10, also limits the battery housing 10 in the front-to-back direction and vertical height space, ensuring the stability of the battery housing 10 during the formation of the electric motorcycle.

[0049] The rear support tube 6 is fixedly connected between the lower crossbeams 23 on the left support 2 and the right support 3. The two lower crossbeams 23 have end support tubes 7 welded to their right ends. The end support tubes 7 extend to the outside of the lower crossbeams 23 and are welded to the corresponding support beams 21 at both ends.

[0050] The bottom support pipe 5 is welded to the left side of the two support beams 21. The left end of the support beam 21 is welded to the lower crossbeam 23.

[0051] It also includes four motor suspension mounts 212 for mounting the motor 40. The four motor suspension mounts 212 are fixedly connected to the motor 40 at different heights. Two of the four motor suspension mounts 212 are diagonally positioned, tilted towards the outside of the motor 40. Three of the four motor suspension mounts 212 are welded to the bottom of the frame body, and the remaining motor suspension mount 212 is mounted on the frame body above the central axis of the motor 40. The remaining motor suspension mount 212 serves as a reinforcing connector, including a fixing lug and an adjusting connector 2121. The fixing lug is welded to the front upright section of the U-shaped support beam 21 near the head tube 1. The adjusting connector 2121 has mounting holes and slotted holes 2122. The adjusting connector 2121 is fixedly connected to the motor 40 and the fixing lug respectively through the mounting holes and slotted holes 2122 using screws or bolts. The three upright motor suspension mounts 212 welded to the bottom of the frame body... The mounting plane of the motor 40 is defined, and the motor suspension mounting piece 212 with the adjustment connector 2121 facilitates the fixed connection of the other three motor suspension mounting pieces 212 after the motor 40 is placed on the frame body. After the three motor suspension mounting pieces 212 at the bottom of the frame body are fixed to the motor 40, the adjustment connector 2121 is rotated to fix the adjustment connector 2121 to the motor 40. The multiple motor suspension mounting pieces 212 at different heights make the installation of the motor 40 simple while ensuring the stability of the motor 40 installation. In addition, the setting of the waist-shaped hole 2122 of the adjustment connector 2121 can reduce the process requirements for the installation of the motor 40 and reduce the production cost of the motorcycle.

[0052] On the frame assembly, the battery housing 10 is located at the upper left of the frame body. After the motor 40 is installed on the frame assembly, it is located at the lower right of the battery housing 10. The front vertical sections of the two support beams 21 of the frame body are inclined downwards and backwards. A controller mounting frame 9 is welded between the front vertical sections of the two support beams 21. The controller mounting frame 9 is located below the battery housing 10 and is used to install the controller 50. The battery housing 10 is installed at an angle, with the downward side of the battery housing 10 facing the motor 40. The battery charging converter 60 is fixedly installed on the rear bracket 4, and the installation position of the converter 60 is not lower than the bottom of the battery housing 10.

[0053] Ventilation panels are installed on the front and bottom of the frame body (the ventilation panels are not fully shown in the attached drawings of this embodiment; the ventilation panels are those used in existing motorcycles). The rear of the frame body near the motor 40 is unobstructed, allowing air flowing over the upper part of the frame assembly to directly blow onto the battery during motorcycle operation, and air flowing over the lower part of the frame assembly to directly blow onto the controller 50. This facilitates rapid cooling of the high-heat-generating battery and controller 50. The tilted position of the battery housing 10 guides the airflow, allowing it to quickly flow downwards from the rear of the frame assembly. The unobstructed area quickly disperses, avoiding the problems of high airflow resistance, excessive noise, and reduced heat dissipation caused by the airflow impacting the rear support 4 and the area under the motorcycle seat at an angle (if the airflow impacts the area under the motorcycle seat, due to the many parts such as the shock absorber, shock absorber mounting bracket 8, and converter 60, and the many connecting parts on the rear support 4, the airflow becomes very turbulent after impacting this area, which increases the motorcycle's wind resistance, increases the noise generated during the motorcycle's operation, and makes it difficult for the hot air after heat exchange with the battery and converter 60 to dissipate quickly).

[0054] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A frame assembly, comprising a frame body and a battery housing mounted on the frame body, the frame body including a head tube and a left bracket and a right bracket located on both sides of the head tube, characterized in that: Both the left and right brackets include an upper crossbeam, a lower crossbeam, and a support beam. The support beam is located at the bottom. Both the upper and lower crossbeams are located on the side of the battery. The cross-section of the upper crossbeam is elliptical. The major axis of the elliptical cross-section of the upper crossbeam is vertical, and the minor axis of the elliptical cross-section of the upper crossbeam is horizontal. The two support beams are fixedly connected at the end away from the head tube by a shock absorber mounting seat. One end of the upper crossbeam is fixedly connected to the head tube, and the other end of the upper crossbeam is fixedly connected to the end of the support beam away from the head tube. The end of the upper crossbeam that connects to the supporting beam is machined with a deformation groove that runs through the short axis of the upper crossbeam. The bottom support tube and the rear support tube are fixedly connected between the left bracket and the right bracket; the battery compartment is placed above the bottom support tube and fixedly connected to the bottom support tube, and the rear support tube is located at the rear side of the battery compartment and fixedly connected to the rear side of the battery compartment. The rear side of the battery housing is fixed with a rear connecting plate, and a rear connecting piece is placed upright on the rear support tube and fixed thereon. Both the rear connecting plate and the rear connecting piece are machined with arc-shaped contact bottom surfaces, and the projection of the arc-shaped contact bottom surfaces along the cross-section of the rear support tube is U-shaped. The battery housing is installed on the upper left of the frame body, and the motor can be installed on the lower right of the battery housing. The battery housing is installed at an angle, with the downward side of the battery housing facing the motor.

2. The frame assembly according to claim 1, characterized in that: A first reinforcing member and a second reinforcing member are provided between the upper and lower crossbeams. The distance between the first and second reinforcing members at the end connecting the upper crossbeam is smaller than the distance at the end connecting the lower crossbeam.

3. A frame assembly according to claim 1, characterized in that: Multiple motor suspension mounting components are fixed on the vehicle frame body. These multiple motor suspension mounting components are used to form a fixed connection with the motor at different heights. Among the multiple motor suspension mounting components, at least two diagonally opposite motor suspension mounting components are inclined, with the inclination direction facing outwards from the motor.

4. A frame assembly according to claim 3, characterized in that: The vehicle frame is also fixed with a controller mounting frame, which is fixed between two support beams and located below the battery housing.

5. A frame assembly according to claim 4, characterized in that: Ventilation panels can be installed on the front and bottom of the frame body, while the rear of the frame body is unobstructed.

6. A frame assembly according to claim 5, characterized in that: The frame body also includes a rear bracket located behind the left and right brackets. A battery charging converter can be fixedly installed on the rear bracket, and the converter is installed at a position no lower than the bottom of the battery compartment.

7. A motorcycle, characterized in that, The vehicle frame assembly includes any one of claims 1-5, wherein a household 220V charging socket and a 220V charging socket for a charging gun are mounted on the vehicle frame assembly.

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