Claims: We Claim
A two wheeled motorcycle chassis compromising:
A unique feature having Entire space below the petrol tank area allocated for traction battery storage.
A box [9] for accomodating a battery of the electric vehicle
A horizontal support beam [6] for the box shaped structure
Vehicle battery pack protection system
Space for motor is allocated within rear wheel of motorcycle.
2. As a motorcycle chassis, wherein the steering assembly includes at least one of a front wheel, fork, a suspension system, a brake, a front vehicle combination thereof.

3. The box is accessed from the right side of the chassis detachably connected to the open box structure of the chassis.

4. The at least one supporting chamber is provided below the cradle of the vehicle.
5. The vehicle battery pack protection system of claim 1, wherein said battery pack enclosure is mounted between a first vertical structural member located in front side of the vehicle and a second structural member located adjacent to the second side of said vehicle, wherein said battery pack enclosure is mounted between a front vehicle suspension assembly and a rear vehicle suspension assembly, wherein said battery pack enclosure transverses the distance between said first vehicle structural side member and said second vehicle structural side member, wherein a first side member of said plurality of enclosure side members is mechanically coupled to said first vehicle structural side member and a second side member of said plurality of enclosure front members is mechanically coupled to the centre post plate wherein said battery pack enclosure further comprises a plurality of cross-members integrated into said battery pack enclosure, wherein each of said plurality of cross-members transverses the distance between said first and second side members of said battery pack enclosure, and wherein said plurality of cross-members members of the adjacent structural member intended to support for the adjacent member and for the traction batteries

6. The battery box (space) can also be used for the traction battery and other components like DC-DC converter, Motor Controller.

7. The typical tank shape of the motorcycle can be used to host accessory components or can be used as a storage space. The tank shape itself is preserved to provide agillity to the driver.
, Description:BRIEF DESCRIPTION OF DRAWINGS

The above and other features, aspects and advantages of the subject matter will be better understood with regard to the following description, appended claims and accompanying drawings where:

Fig. 1 : illustrates an orthographic 3D view of a two - wheeled motorcycle vehicle chassis, according to an embodiment of the present invention

Fig. 2 : illustrates an orthographic 3D view of a two - wheeled motorcycle vehicle chassis with detachable door, according to embodiment of the present invention
Crade at right side of the chassis
Cradle at left side of the chassis
Head tube
Down tube
Horizontal supporting beam
Horizontal supporting connectors
Centre post
Centre post plate
Battery box
Side door

DETAILED DESCRIPTION

The subject matter described herein is directed to a chassis structure of a two- wheeled vehicle. The chassis structure includes a head tube along with a plurality of structural members for supporting various components of the vehicle.

In conventional motorcycle the IC engine is place just below the petrol tank position, and some form of chain, belt or shaft is used to transmit the energy from the IC engine to the wheel. That creates vibration in the motorcycle.

In this design, the space under the tank area is used to hold the battery pack, the energy source of the vehicle. It provides several advantages for motorcycle functionality, stability and performance.

The battery pack is well supported by the front structural member [1] using dual cradle with dual supporting beams. The battery box [8] is mounted to the dual vertical supporting beams [1] and [2]. This formation allows to reduce the mechanical shocks, road bumps. In addition, it also provides protection from physical damages by providing another perimeter support for battery pack.

The head tube [3] is plurally connected with the right side cradle [1] and left side cradle [2]. The down tube is connected with head tube [3] and center post plate [7].

The down tube are horizontally straightened [5] to provide flat surface for traction battery holding. The horizontally connected downtubes are connected to each other by a horizontally supporting connectors [6].

Battery being heaviest single part of motorcycle, its placement is critical in providing lowest gravitational point and center of gravity to the vehicle while optimizing the space for highest energy capacity and improving the stability of the vehicle.

In this design, the battery pack is mounted inside the battery box [9] which is part of the chassis. The weight of the battery pack rests on the supporting beam [6] thus resulting in lowest gravitational point, the same design also allows the entire space below the tank until the support beam available for battery pack, in future this space maybe in used to host controller, DC-DC converter as the lithium-ion energy density increase.
The motorcycle gets the lower gravitational force as the battery is rested on the horizontal supporting beam [6]. Battery mounting box (space) is supported with metal cylindrical chassis to sustain the weight of battery pack and controllers.

The battery pack is stored inside the battery box [9], it is theft protected as the battery box [9] is not in the open-space. The vehicle can be driven over water potholes upto 12 inch.

In this chassis structure Fig.1 the mechanically vibrating components such as engine, motor are not directly mounted on the chassis thus providing better ride stability and comfort.

The down tube [4] is connected to the center post plate [7]. The center post [8] is stiffened and hardened to bear heavy load such as traction battery, rider and pillion rider.
The side door [10] is detachably coupled to the motorcycle chassis using screws.