Frame assembly for electric motorcycle and electric motorcycle

Abstract

The present disclosure relates to a frame assembly for an electric motorcycle and an electric motorcycle. The frame assembly comprises a first frame, a second frame, a battery and a motor, the first frame and the second frame being respectively mounted onto the battery from a first side and a second side of the battery, the motor being mounted onto the battery and / or the second frame from the second side, and the first side and the second side being configured as opposite sides of the battery. At least partially integrating a power system and a load-bearing system of the electric motorcycle can simplify the internal structure of the electric motorcycle and reduce the manufacturing cost thereof.

Description

Frame assembly for electric motorcycle and electric motorcycle Technical Field

[0001] The present disclosure relates to the field of motorcycles, and in particular to a frame assembly of an electric motorcycle and an electric motorcycle. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] As motorcycles, especially electric motorcycles, achieve increasingly advanced performance, the requirements for load-bearing capacity and lightweight construction are also increasing. In related technologies, the frame is typically welded from steel pipes, with the battery and motor mounted on the frame in a suspended manner.

[0004] However, adopting this frame structure may present the following issues: First, a frame made of steel pipes is generally heavier, which results in higher energy consumption during driving and reduced range. Second, the manufacturing process is often complex due to the need to weld multiple sections of steel pipes together. Furthermore, the suspended mounting method may limit the space available for the battery inside the vehicle, forcing the motorcycle to carry only smaller, and therefore smaller, batteries, which also results in reduced range.

[0005] Summary of the Invention

[0006] One of the objectives of the present disclosure is to provide a frame assembly for an electric motorcycle that can at least partially address the above-mentioned issues. This objective can be achieved through the following technical solutions:

[0007] A first aspect of the present disclosure provides a frame assembly for an electric motorcycle, the frame assembly comprising a first frame, a second frame, a battery, and a motor, wherein the first frame and the second frame are mounted to the battery from a first side and a second side of the battery, respectively, and the motor is mounted to the battery and / or the second frame from the second side, wherein the first side and the second side constitute opposing sides of the battery. By incorporating both the battery and the motor as part of the frame assembly, the battery and the motor can be directly used to carry weight, eliminating the need for a frame for mounting the battery and the motor. Therefore, the frame assembly according to the present disclosure can, for example, at least achieve lightweighting of the electric motorcycle frame, simplify the frame manufacturing process, and, for example, improve the electric motorcycle's range.

[0008] A second aspect of the present disclosure provides an electric motorcycle including the aforementioned frame assembly. The electric motorcycle is preferably a motorcycle driven solely by electricity, or a pure electric motorcycle. The electric motorcycle according to the present disclosure can be adapted to a lightweight frame assembly, thereby simplifying the motorcycle's production process and manufacturing process, reducing the motorcycle's weight, and improving the motorcycle's range. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present disclosure. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0010] FIG1 is a schematic structural diagram of an electric motorcycle according to an embodiment of the present disclosure;

[0011] 2 to 6 are schematic diagrams of a frame assembly of an electric motorcycle according to different embodiments of the present disclosure;

[0012] 7 to 10 are schematic structural diagrams of a battery housing of a vehicle frame assembly according to different embodiments of the present disclosure;

[0013] FIG. 11 is a cross-sectional view of a battery case according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0014] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0015] It should be understood that the terminology used herein is for the purpose of describing specific example embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, as used herein, the expressions "a," "an," and "the" may also be intended to include plural forms. The terms "comprise," "include," and "have" are inclusive and, therefore, specify the presence of the stated features, elements, and / or components, but do not preclude the presence or addition of one or more other features, elements, components, and / or combinations thereof.

[0016] Although the terms "first," "second," and so on may be used herein to describe various elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used solely to distinguish one element, component, region, layer, or section from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and "third," as well as other numerical terms, when used herein, do not imply a sequence or order. Furthermore, in the description of this disclosure, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be interpreted broadly, meaning, for example, fixed, removable, or integrally connected; directly or indirectly through an intermediary. Furthermore, in the description of this disclosure, unless otherwise expressly specified or limited, the term "fixed" refers to the process of connecting or securing several components together according to technical requirements, thereby achieving mechanical assembly while maintaining the correct relative positions and relationships, such as the mechanical connection between a screw and a threaded hole. Those skilled in the art will understand the specific meanings of these terms in this disclosure based on the specific circumstances.

[0017] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "upper," "middle," "lower," "inside," "near," etc. Such spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as "below" or "below" another element or feature would then be oriented as "above" or "above" another element or feature. Thus, the example term "below" may include both upper and lower orientations. The device may be oriented otherwise (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein are interpreted accordingly.

[0018] In the relevant technical field, the structure of traditional motorcycle frames is usually designed to accommodate fuel tanks and engines, and is usually manufactured by welding steel pipes. In contrast, the power system of electric motorcycles uses batteries and motors. Because batteries are generally larger than fuel tanks and are mostly roughly rectangular in shape, directly adapting the frame structure of gasoline motorcycles to electric motorcycles may not be suitable. This may lead to problems such as limited battery size and capacity or poor range of the motorcycle.

[0019] For electric motorcycles, batteries and motors are crucial components for providing the vehicle's endurance, electrical performance, and power performance. Batteries and motors are generally considered to be motorcycle power devices independent of the frame structure. For this reason, technical personnel in this field always try their best to design various frames (for example, battery racks, battery storage boxes, motor racks, main frames, etc.) to protect batteries and motors, and install batteries and motors on the frame structure, with the aim of avoiding the battery or motor from being subjected to external loads (for example, the weight of the driver, passengers, or motorcycle accessories) as much as possible.

[0020] However, the inventors of the present disclosure have overcome the above technical prejudices and discovered that if the battery and the motor themselves are included as part of the frame assembly and are directly used as structural members similar to the frame for bearing external forces, the following unexpected technical effects can be at least partially achieved: First, by eliminating some frame components, the lightweight of the motorcycle body is achieved, and since the internal space of the body that can be occupied by the battery is increased, the endurance of the motorcycle can be improved; second, the frame assembly can be completed by adopting a modular combination of various components, which can simplify the production and maintenance processes of the frame; third, the power system and the load-bearing system of the electric motorcycle are at least partially integrated together, so that the battery and motor used to provide power can also be used for load bearing, which not only simplifies the internal structure and manufacturing cost of the electric motorcycle, but also helps to improve the functional integration of the electric motorcycle.

[0021] Embodiments of the present disclosure are described below with reference to the accompanying exemplary drawings.

[0022] FIG1 shows an electric motorcycle according to an embodiment of the present disclosure. The electric motorcycle can be a purely electrically powered motorcycle or a hybrid powered motorcycle. The electric motorcycle includes a frame assembly 1000, a front suspension system 2000, and a rear suspension system 3000.

[0023] In the embodiment shown in FIG. 1 , the frame assembly 1000 includes a first frame 1100 , a second frame 1200 , a battery 1300 , and a motor 1400 .

[0024] Here, the first frame 1100 can be used to mount the front suspension system 2000 and / or the front steering system. The front suspension system 2000 may include the electric motorcycle's front wheel 2100 and a front shock absorber assembly 2200. The second frame 1200 can be used to mount the rear suspension system 3000, which may include the electric motorcycle's rear wheel 3100, a rear shock absorber assembly 3200, and a rear fork 3300. One end of the rear shock absorber assembly 3200 is mounted to the second frame 1200, and the other end is mounted to the rear fork 3300. The rear fork 3300 has one end mounted to the rear wheel 3100 and the other end mounted to the motor 1400 via the motor's bearing 1410. The rear fork's rotation axis coincides with the rotation axis of the motor's output shaft, allowing the rear fork to rotate about the motor shaft. In another embodiment, the rear wheel 3100, the rear shock absorber assembly 3200, the rear fork 3300 and the second frame 1200 may together constitute a rear suspension system of the electric motorcycle.

[0025] The first frame 1100 can be the front frame of the electric motorcycle and is mounted to the battery from a first side (herein, the front) of the battery, while the second frame 1200 can be the rear frame of the electric motorcycle and is mounted to the battery from a second side (herein, the rear) of the battery. It should be understood that, within the scope of this disclosure, the first side and the second side can be any two sides of the battery 1300, such as the front and rear sides, left and right sides, top and bottom sides of the battery, and preferably two opposing sides of the battery. As an example, the first side can be the side of the battery facing the normal forward direction of the electric motorcycle, while the second side can be the side of the battery facing away from the normal forward direction of the electric motorcycle. It should also be understood that, within the scope of this disclosure, the term "mounted to" refers to the positional arrangement relationship between components, rather than specifying the specific connection method between them. For example, "the first frame 1100 is mounted to the battery from the front side of the battery" means that after installation, the first frame is located in front of the battery, and does not specify the specific connection direction between the first frame 1100 and the battery. In fact, even if the first frame is mounted to the battery from the front side of the battery, a longitudinal or transverse connection direction can still be adopted according to the specific arrangement of the connecting components therebetween, and thus the connection interface between the first frame and the battery can also be another side surface of the battery (for example, the left or right side), as will be described below in conjunction with Figures 2 to 6.

[0026] Here, the motor 1400 can be mounted to the second frame 1200 and / or the battery 1300 from the battery side of the second frame 1200. Advantageously, the motor 1300 can be mounted to both the second frame and the battery simultaneously. For example, the upper and lower portions of the motor can be mounted from the second side to the lower portion of the second frame 1200 and the lower portion of the battery 1300, respectively, thereby improving the stability of the motor. Furthermore, the motor can be configured as an external permanent magnet synchronous motor, for example, mounted outside the rear wheel 3100 rather than on the rear wheel, thereby improving the shock absorption performance of the vehicle suspension and enhancing the vehicle's dynamic performance. Particularly advantageously, the motor and battery can each include an electrical interface and a fluid interface that can be plugged into each other, thereby achieving both electrical and fluid connections between the motor and the battery through direct plugging.

[0027] Advantageously, the first frame 1100, the second frame 1200, the battery 1300, and the motor 1400 can collectively form the load-bearing structure of the electric motorcycle, used to bear the weight of, for example, the vehicle body, the driver, passengers, and / or other accessories. In this case, the battery and motor that provide power can also be used to bear external forces, thereby at least partially integrating the power system and load-bearing system of the electric motorcycle. This not only simplifies the internal structure and manufacturing costs of the electric motorcycle, but also helps further improve the functional integration of the electric motorcycle. Furthermore, the frame structure (or load-bearing structure) of the electric motorcycle can include no other frame components besides the first and second frames. In other words, the frame assembly of the electric motorcycle can consist solely of the first frame 1100, the second frame 1200, the battery 1300, and the motor 1400, without including, for example, a battery frame, a motor frame, or any frame components connected between the first and second frames 1100, 1200. In the context of this disclosure, a "frame member" refers to a vehicle frame specifically used for connection or load-bearing functions. This may be, for example, formed by connecting profiles or welding tubular members, and thus does not have other functions (such as electrical or power functions). In this disclosure, it is advantageous that, while batteries and motors are not true frame members, they may have load-bearing functions similar to frame members and, therefore, may be considered integral parts of the vehicle frame assembly.

[0028] In a preferred embodiment, the first frame 1100, the second frame 1200, and the battery housing 1310 can be made of an alloy material, preferably a light alloy such as an aluminum alloy, a copper alloy, or an aluminum-copper alloy. More advantageously, the first frame 1100, the second frame 1200, and the battery housing 1310 can be stamped and formed integrally.

[0029] 2 to 6 exemplarily illustrate schematic diagrams of a frame assembly of an electric motorcycle according to different embodiments of the present disclosure.

[0030] In a preferred embodiment, the various components in the frame assembly can be detachably connected and fixed by threaded connections such as screws or bolts. As shown in Figure 2, a plurality of threaded holes can be provided on the first frame 1100, and a plurality of threaded holes can also be provided at positions corresponding to these threaded holes on the first side of the battery 1300. Here, a plurality of screws 1500 can be sequentially passed through the threaded holes on the first frame 1100 and the battery 1300 and fastened thereto, thereby achieving a fixed connection between the first frame 1100 and the battery 1300. When the electric motorcycle needs to replace the first frame 1100, the front suspension system 2000 or the front wheel assembly, these screws can be removed from the threaded holes respectively, thereby removing the first frame (or the front suspension system 2000 or the front wheel assembly connected thereto) from the battery.

[0031] Similarly, several threaded holes may be provided on the second frame 1200, and several threaded holes may also be provided on the second side of the battery 1300 at positions corresponding to these threaded holes. Here, several screws 1500 may be sequentially passed through the threaded holes on the second side of the second frame 1200 and the battery 1300 and fastened thereto, thereby achieving a fixed connection between the second frame 1200 and the battery 1300. When the second frame 1200 or the rear suspension system 3000 of the electric motorcycle needs to be replaced, these screws can be removed from the threaded holes, thereby removing the second frame (or the rear suspension system 3000 connected thereto) from the battery.

[0032] Furthermore, the upper and lower portions of the motor 1400 may each be provided with a plurality of threaded holes. Accordingly, the second frame 1200 may be provided with a plurality of threaded holes corresponding to the threaded holes in the upper portion of the motor, while the second side of the battery 1300 may be provided with a plurality of threaded holes corresponding to the threaded holes in the lower portion of the motor. By engaging the screws 1500 with these threaded holes, the upper portion of the motor 1400 may be secured to the second frame 1200, while the lower portion of the motor may be secured to the battery 1300. Advantageously, this method allows the motor to be secured not only to the second frame but also to the second side of the battery, thereby ensuring a secure and stable installation of the motor and preventing it from becoming loose due to non-human external forces such as vibration or accidents. Furthermore, the stability of the motor also contributes to the overall stability of the rear suspension system connected thereto, thereby enabling the electric motorcycle to have better power performance.

[0033] After the installation is completed, the first frame is arranged on the first side of the battery, the second frame is arranged on the second side of the battery, and the motor is arranged on the second side of the battery and below the second frame. It is worth noting that the number and direction of the threaded connections between the components of these frame assemblies (i.e., the first frame, the second frame, the battery and the motor) are not limited. For example, the connection (e.g., threaded connection) between any two components of the frame assembly can be fixed horizontally or longitudinally, or a combination of horizontal and longitudinal fixation can be used. In the scope of the present disclosure, "lateral" may refer to a direction parallel to the ground and perpendicular to the central axis of the electric motorcycle, while "longitudinal" may refer to a direction parallel to the ground and parallel to the central axis of the electric motorcycle (or the direction of travel of the electric motorcycle). Advantageously, the components in the frame assembly can transmit force mainly in the longitudinal direction.

[0034] In the embodiment shown in FIG2 , the connections between the various components of the frame assembly (i.e., between the first frame 1100 and the battery 1300, between the second frame 1200 and the battery 1300, between the motor 1400 and the battery 1300, and between the motor 1400 and the second frame 1200) are all secured to each other via longitudinal connections. In the embodiment shown in FIG3 , the connections between the various components of the frame assembly (i.e., between the first frame 1100 and the battery 1300, between the second frame 1200 and the battery 1300, between the motor 1400 and the battery 1300, and between the motor 1400 and the second frame 1200) are all secured to each other via transverse connections. In other words, all screws used to connect the various components of the frame assembly can be inserted and secured into corresponding screw holes in a uniform direction (longitudinally in FIG2 , and transversely in FIG3 ). In this way, not only can the assembly and disassembly of the frame assembly be simplified, so that the corresponding components of the frame assembly can be quickly disassembled or replaced when necessary, but also because the direction of the threaded connection is consistent with the force transmission direction of the frame assembly, this can maximize the load-bearing capacity and reliability of the frame assembly.

[0035] In the embodiment shown in FIG4 , the first frame 1100 and the battery 1300, and the second frame 1200 and the battery 1300, are secured to each other via transverse connections, while the motor 1400 and the battery 1300, and the motor 1400 and the second frame 1200, are secured to each other via longitudinal connections. Although the interface between the battery and the first and second frames is located on the left and right sides of the battery due to the transversely extending threaded connections, the first and second frames are still located in front of and behind the battery. Therefore, it can be understood that the first and second frames are still attached to the battery from the front and rear sides. In this embodiment, the threaded connection direction of the motor is advantageously different from that of the first and second frames, and is preferably perpendicular to each other. This allows for staggered locking forces between the components of the frame assembly, thereby ensuring a more secure installation of the frame assembly.

[0036] In the embodiment shown in FIG5 , the first frame 1100 and the battery 1300, as well as the second frame 1200 and the battery 1300, are fixed to each other by a combination of transverse and longitudinal connections, while the motor 1400 and the battery 1300, as well as the motor 1400 and the second frame 1200, are fixed to each other by a longitudinal connection. Advantageously, some or all of the components in the frame assembly (here, for example, the first frame and the second frame) can themselves be fixed using a combination of transverse and longitudinal connections, thereby ensuring the reliability of the connection of these components themselves. Advantageously, the first frame and the second frame can be connected to the four joint surfaces of the battery: the front, rear, left, and right sides, thereby dispersing the points of force applied to the battery by the first frame and the second frame and thereby reducing the concentration of load on the battery.

[0037] In the embodiment shown in FIG6 , the first frame 1100 and the battery 1300, the second frame 1200 and the battery 1300, and the motor 1400 and the second frame 1200 are fixed to each other via a transverse connection, while the motor 1400 and the battery 1300 are fixed to each other via a longitudinal connection. Advantageously, the motor 1400 is not only fixed to the second frame but also to the battery, which can increase the installation stability of the battery and minimize the possibility of the motor being loosened due to vibration during operation. Advantageously, the direction in which the motor is connected to the second frame (for example, transversely in this case) is different from the direction in which it is connected to the battery (for example, longitudinally in this case), thereby allowing the installation forces of the motors to be locked to each other and thereby improving the installation reliability of the motors.

[0038] It should be understood that the connection method and especially the connection direction between the various components in the frame assembly are not limited to the implementation shown in the above figures, but can be adjusted or used in combination according to the adaptation needs inside the vehicle body or other vehicle body structure design requirements.

[0039] Figures 7 to 10 illustrate schematic structural diagrams of battery housings according to various embodiments of the present disclosure. In one embodiment of the present disclosure, the frame assembly may consist solely of a first frame, a second frame, a battery, and a motor, without including other frame load-bearing components to withstand the various loads during vehicle motion. Therefore, it is important that the battery and motor themselves possess a certain load-bearing capacity, allowing them to serve as an additional load-bearing function as part of the frame assembly. Furthermore, compared to the motor, which may be positioned below the second frame, the battery, as an intermediate component of the frame assembly, requires a higher load-bearing capacity.

[0040] In the embodiment shown in FIG7 , the battery 1300 may further include a battery housing 1310 and at least one battery module mounted within the battery housing. To increase the load-bearing capacity of the battery, a plurality of reinforcing ribs 1319 may be provided on the battery housing 1310. Advantageously, these reinforcing ribs may be provided on all sides of the battery and may extend along the force transmission direction of the battery (here, the longitudinal direction) to provide the battery with a higher load-bearing strength.

[0041] Furthermore, the battery housing 1310 can be constructed in a segmented structure, comprised of multiple (e.g., two, three, or more) housing components. Advantageously, the segmented construction not only reduces the difficulty of molding the battery housing, but also reduces the manufacturing cost of the battery. As shown in Figure 7, the battery housing 1310 can include a first housing cover 1311, a second housing cover 1312, and a main housing 1313. The main housing 1313 can be constructed as an annular structure with open ends, allowing it to be integrally formed, for example, by stamping. Several threaded holes for mounting the first and second housing covers 1311, 1312 can be provided on the two open end surfaces of the housing. The first and second housing covers 1311, 1312 are configured as end caps corresponding to the cross-section of the main housing, and each has a threaded hole provided at a location corresponding to the threaded holes in the main housing. During installation, screws can be inserted through the threaded holes in the first, second, and main housings, respectively, and secured therein. Advantageously, a circle of threaded connection can be provided along the edge of the end face of the main housing (ie arranged around the cross section of the main housing), which not only facilitates the sealing of the entire battery housing but also increases the overall rigidity of the battery.

[0042] In another embodiment shown in Figure 8, the first shell half 1315 and the second shell half 1316 can be respectively configured as the front half and the rear half of the battery shell 1310. Here, the front half and the rear half can be two parts defined according to the forward and backward directions of the electric motorcycle. Similarly, the first shell half 1315 and the second shell half 1316 are respectively provided with a circle of flanges extending along the cross-sectional edge of the battery, and corresponding threaded holes are respectively provided on the flanges. The first shell half 1315 and the second shell half 1316 can be fixed by a threaded connection of the flanges (for example, a bolt connection here), thereby sealingly forming the battery shell 1310 and increasing the overall rigidity of the battery.

[0043] In another embodiment shown in FIG9 , a battery housing 1310 can be assembled from a first housing half 1315 and a second housing half 1316 , wherein the first housing half 1315 and the second housing half 1316 respectively constitute the upper and lower halves of the battery housing 1310 . Flange strips extending in the longitudinal direction of the battery are provided on the joint surfaces of the first and second housing halves 1315, 1316, respectively. Corresponding threaded holes are provided in the flange strips. The first and second housing halves 1315, 1316 can be secured to each other via a threaded connection (here, for example, a bolt connection) via the flange strips, thereby sealingly forming the battery housing 1310 . Advantageously, these flange strips extend longitudinally and align with the primary force transmission direction of the battery housing, which further increases the rigidity and stress resistance of the battery housing.

[0044] In another embodiment shown in FIG10 , the first housing half 1315 and the second housing half 1316 respectively constitute the left and right halves of the battery housing 1310. Here, the left and right halves can be two parts defined by the normal straight-ahead direction of the electric motorcycle. Similarly, each of the two housing halves is provided with a flange extending in the longitudinal direction of the battery, and each flange is provided with a corresponding threaded hole. The first housing half 1315 and the second housing half 1316 are secured to each other via a threaded connection (here, for example, a bolt connection) via the flanges, thereby sealingly forming the battery housing 1310 and increasing the rigidity and stress-bearing strength of the battery housing. In the embodiments shown in FIG9 and FIG10 , advantageously, the connection direction of the battery housing itself (upper-lower connection and left-right connection) is different from the direction in which the first and second frames are mounted to the battery (fore-and-aft installation). Thus, when the first and second frames are mounted to the battery from the front and rear sides, respectively, the two housing halves can be more securely locked together, further increasing the reliability of the battery housing installation.

[0045] FIG11 shows an exemplary cross-section of a battery housing 1310 , where the cross-section is a cross-section of the battery housing cut along a vertical direction. In this example, the cross-section may be convex, while in other examples, it may be rectangular or approximately rectangular. Advantageously, the longitudinal direction of the cross-section is consistent with the direction of gravity (i.e., the direction of the external force applied to the battery), thereby increasing the bending resistance of the battery housing in the direction of force.

[0046] In addition, advantageously, as shown by the triangular, square or semicircular protrusions extending from the convex cross-sectional frame in the figure, reinforcing ribs 1319 may be provided inside and outside the battery housing. These reinforcing ribs preferably extend in the longitudinal direction of the battery, thereby serving to further increase the strength of the battery housing. Particularly advantageously, connecting crossbeams for fixing the battery modules can be connected between these internal reinforcing ribs 1319, so that the internal reinforcing ribs 1319 can also be used to additionally install the battery modules. Specifically, connecting crossbeams can be installed between the reinforcing ribs at the same height on opposite sides to fix the battery modules and bear their weight, and each battery module can be stacked in sequence inside the battery housing. After assembly is completed, the battery housing can be integrated with the stacked battery modules, which can further increase the overall rigidity of the battery, allowing the battery to serve as a load-bearing structural member of the frame assembly.

[0047] The present disclosure implements a frame assembly for an electric motorcycle and an electric motorcycle through the following embodiments. By at least partially integrating the power system and load-carrying system of the electric motorcycle, the frame structure of the electric motorcycle can be free of frames other than the front and rear frames. Instead, the motor and battery itself serve as the supporting components of the frame assembly. This simplifies the internal structure and manufacturing costs of the electric motorcycle and helps improve the functional integration of the electric motorcycle.

[0048] Item 1: A frame assembly for an electric motorcycle, wherein the frame assembly includes a first frame, a second frame, a battery and a motor, wherein the first frame and the second frame are mounted to the battery from a first side and a second side of the battery, respectively, and the motor is mounted to the battery and / or the second frame from the second side, wherein the first side and the second side constitute opposite sides of the battery.

[0049] Item 2: The frame assembly according to Item 1, wherein the first frame, the second frame, the battery and the motor together constitute the load-bearing structure of the electric motorcycle.

[0050] Item 3: The frame assembly according to Item 1, wherein the frame assembly does not include any other frame components except the first frame and the second frame.

[0051] Item 4: The frame assembly according to Item 3, wherein the frame assembly does not include a motor frame, a battery frame, a main frame, or a frame member connected between the first frame and the second frame.

[0052] Item 5: The frame assembly according to Item 1, wherein the first frame is used to install the front suspension system of the electric motorcycle, the front suspension system includes a front shock absorber assembly and / or a front wheel, and the second frame is used to install the rear suspension system of the electric motorcycle, the rear suspension system includes a rear shock absorber assembly, a rear fork and / or a rear wheel of the electric motorcycle.

[0053] Item 6: The frame assembly according to Item 1, wherein the motor is mounted outside the wheel hub of the electric motorcycle.

[0054] Item 7: The vehicle frame assembly according to Item 1, wherein the battery comprises at least one battery module and a battery housing, wherein the at least one battery module is located inside the battery housing.

[0055] Item 8: The frame assembly according to Item 1, wherein the first side is a side of the battery facing the direction of travel of the electric vehicle, and the second side is a side of the battery facing away from the direction of travel of the electric vehicle.

[0056] Item 9: The frame assembly according to any one of Items 1 to 8, wherein the first frame, the second frame and / or the battery housing are integrally formed.

[0057] Item 10: The frame assembly according to Item 9, wherein the first frame, the second frame and / or the battery housing are integrally formed of aluminum alloy.

[0058] Item 11: The frame assembly according to any one of items 1 to 8, wherein the motor is connected to the rear fork of the electric motorcycle via a bearing, and the rotation axis of the motor shaft of the motor coincides with the rotation axis of the rear fork.

[0059] Item 12: The vehicle frame assembly according to any one of Items 1 to 8, wherein the electrical interface and / or fluid interface of the motor can be connected to the electrical interface and / or fluid interface of the battery in a plug-in manner.

[0060] Item 13: The frame assembly according to any one of items 1 to 8, wherein the first frame and the battery, the second frame and the battery, the motor and the battery, and / or the motor and the second frame are fixed to each other by detachable connections.

[0061] Item 14: The vehicle frame assembly according to Item 13, wherein the detachable connection includes a connection along the longitudinal direction and / or the transverse direction.

[0062] Item 15: The frame assembly according to Item 14, wherein the first frame and the battery, the second frame and the battery, the motor and the battery, and the motor and the second frame are fixed to each other by longitudinal connections.

[0063] Item 16: The frame assembly according to Item 14, wherein the first frame and the battery, the second frame and the battery, and the motor and the battery as well as the motor and the second frame are fixed to each other by transverse connections.

[0064] Item 17: The frame assembly according to Item 14, wherein the first frame and the battery, and the second frame and the battery are fixed to each other by a transverse connection, and the motor and the battery, and the motor and the second frame are fixed to each other by a longitudinal connection.

[0065] Item 18: The frame assembly according to Item 14, wherein the first frame and the battery, and the second frame and the battery are fixed to each other through transverse and longitudinal connections, and the motor and the battery, and the motor and the second frame are fixed to each other through longitudinal connections.

[0066] Item 19: The frame assembly according to Item 14, wherein the first frame and the battery, the second frame and the battery, and the motor and the second frame are fixed to each other by a transverse connection, and the motor and the battery are fixed to each other by a longitudinal connection.

[0067] Item 20: The vehicle frame assembly according to any one of Items 1 to 8, wherein a vertical cross-section of the battery housing is configured as a rectangle or a convex shape.

[0068] Item 21: The vehicle frame assembly according to Item 7, wherein the outer side and / or inner side of the battery housing is provided with reinforcing ribs extending along the longitudinal direction of the battery.

[0069] Item 22: The vehicle frame assembly according to Item 21, wherein the reinforcing ribs on the inner side of the battery housing are used to connect the battery module and / or install a connecting beam.

[0070] Item 23: The vehicle frame assembly according to any one of Items 1 to 8, wherein the battery housing is composed of a plurality of housing components.

[0071] Item 24: The vehicle frame assembly according to Item 23, wherein the battery housing includes a first housing cover, a second housing cover and a main housing, wherein the first housing cover and the second housing cover are respectively connected to two sides of the main housing, and wherein the main housing is integrally formed.

[0072] Item 25: The vehicle frame assembly according to Item 23, wherein the battery housing comprises a first housing half and a second housing half, wherein the first housing half and the second housing half are fixed to each other by a threaded connection.

[0073] Item 26: The vehicle frame assembly according to Item 25, wherein the first shell half and the second shell half respectively include flanges for the threaded connection, and the flanges extend along the longitudinal direction of the battery.

[0074] Item 27: The vehicle frame assembly according to Item 25, wherein the first shell half and the second shell half are respectively constituted as the upper shell half and the lower shell half, the left shell half and the right shell half, or the front shell half and the rear shell half of the battery shell.

[0075] Item 28: An electric motorcycle, wherein the electric motorcycle comprises a frame assembly according to any one of Items 1 to 27.

[0076] Item 29: The electric motorcycle according to Item 28, wherein the electric motorcycle is a pure electric-driven motorcycle or a hybrid electric-driven motorcycle.

[0077] The above description is merely a preferred embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A frame assembly for an electric motorcycle, characterized in that: The frame assembly includes a first frame, a second frame, a battery and a motor. wherein the first frame and the second frame are mounted to the battery from a first side and a second side of the battery, respectively, and the motor is mounted to the battery and / or the second frame from the second side, The first side and the second side constitute opposite sides of the battery.

2. The frame assembly according to claim 1, characterized in that: The first frame, the second frame, the battery and the motor together constitute the load-bearing structure of the electric motorcycle.

3. The vehicle frame assembly according to claim 1, characterized in that: The frame assembly does not include any frame components other than the first frame and the second frame.

4. The vehicle frame assembly according to claim 3, characterized in that: The frame assembly does not include a motor frame, a battery frame, a main frame, or a frame member connected between the first frame and the second frame.

5. The vehicle frame assembly according to claim 1, characterized in that: The first frame is used to install the front suspension system of the electric motorcycle, and the front suspension system includes a front shock absorber assembly and / or a front wheel. The second frame is used to install the rear suspension system of the electric motorcycle, and the rear suspension system includes the rear shock absorber assembly, the rear fork and / or the rear wheel of the electric motorcycle.

6. The vehicle frame assembly according to claim 1, characterized in that: The motor is installed outside the wheel hub of the electric motorcycle.

7. The vehicle frame assembly according to claim 1, characterized in that: The battery includes at least one battery module and a battery housing, wherein the at least one battery module is located inside the battery housing.

8. The vehicle frame assembly according to claim 1, characterized in that: The first side is a side of the battery facing the traveling direction of the electric vehicle, and the second side is a side of the battery facing away from the traveling direction of the electric vehicle.

9. The vehicle frame assembly according to any one of claims 1 to 8, characterized in that: The first frame, the second frame and / or the battery housing are formed in one piece.

10. The vehicle frame assembly according to claim 9, characterized in that: The first frame, the second frame and / or the battery housing are integrally formed of aluminum alloy.

11. The vehicle frame assembly according to any one of claims 1 to 8, characterized in that: The motor is connected to the rear fork of the electric motorcycle via a bearing, and the rotation axis of the motor shaft of the motor coincides with the rotation axis of the rear fork.

12. The vehicle frame assembly according to any one of claims 1 to 8, characterized in that: The electrical connection and / or the fluid connection of the electric machine can be connected to the electrical connection and / or the fluid connection of the battery by plugging.

13. The vehicle frame assembly according to any one of claims 1 to 8, characterized in that: There are detachable connections between the first frame and the battery, between the second frame and the battery, between the motor and the battery, and / or between the motor and the second frame. The detachable connection is fixed to each other.

14. The vehicle frame assembly according to claim 13, characterized in that: The detachable connection includes connection in the longitudinal direction and / or the transverse direction.

15. The vehicle frame assembly according to claim 14, characterized in that: The first frame and the battery, the second frame and the battery, the motor and the battery as well as the second frame are fixed to each other through longitudinal connections.

16. The vehicle frame assembly according to claim 14, characterized in that: The first frame and the battery, the second frame and the battery, the motor and the battery as well as the second frame are fixed to each other through transverse connections.

17. The vehicle frame assembly according to claim 14, characterized in that: The first frame and the battery, and the second frame and the battery are fixed to each other through transverse connection, and The motor and the battery, and the motor and the second frame are fixed to each other through longitudinal connection.

18. The vehicle frame assembly according to claim 14, characterized in that: The first frame and the battery, and the second frame and the battery are fixed to each other through transverse connection and longitudinal connection, and The motor and the battery, and the motor and the second frame are fixed to each other through longitudinal connection.

19. The vehicle frame assembly according to claim 14, characterized in that: The first frame and the battery, the second frame and the battery, The motor and the second frame are fixed to each other by a transverse connection, and The motor and the battery are fixed to each other by longitudinal connection.

20. The vehicle frame assembly according to any one of claims 1 to 8, characterized in that: The vertical cross section of the battery case is configured in a rectangular or convex shape.

21. The vehicle frame assembly according to claim 7, characterized in that: The outer side and / or the inner side of the battery housing is provided with reinforcing ribs extending along the longitudinal direction of the battery.

22. The vehicle frame assembly according to claim 21, characterized in that: The reinforcing ribs on the inner side of the battery housing are used to connect the battery modules and / or install connecting beams.

23. The vehicle frame assembly according to any one of claims 1 to 8, characterized in that: The battery housing includes a plurality of housing components.

24. The vehicle frame assembly according to claim 23, characterized in that: The battery housing comprises a first housing cover, a second housing cover and a main housing, Wherein, the first housing cover and the second housing cover are respectively connected to two sides of the main housing, And wherein, the main shell is integrally formed.

25. The vehicle frame assembly according to claim 23, characterized in that: The battery housing comprises a first housing half and a second housing half, The first shell half and the second shell half are fixed to each other by threaded connection.

26. The vehicle frame assembly according to claim 25, characterized in that: The first housing half and the second housing half respectively include flanges for the threaded connection, and the flanges extend along the longitudinal direction of the battery.

27. The vehicle frame assembly according to claim 25, characterized in that: The first shell half and the second shell half are respectively configured as an upper shell half and a lower shell half, a left shell half and a right shell half, or a front shell half and a rear shell half of the battery shell.

28. An electric motorcycle, characterized in that: The electric motorcycle comprises a frame assembly according to any one of claims 1 to 27.

29. The electric motorcycle according to claim 28, characterized in that: The electric motorcycle is configured as a purely electrically driven motorcycle or a hybrid electrically driven motorcycle.

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