DESC:4. DESCRIPTION
FIELD OF THE INVENTION
Embodiments of the present invention generally relate to a conversion kit for converting an internal combustion (IC) engine powered two-wheeler vehicle to an electric powered two wheeler vehicle. Specifically, embodiments of the present invention relate to a conversion kit which enables the two wheeler vehicle to run in 2 modes, namely, as full electric vehicle and/or IC engine running with electric motor assistance, wherein conversion kit is fitted to the rear wheel of the two wheeler vehicle.

BACKGROUND OF THE INVENTION
There is a general desire to have electric scooters considering the increasing fossil fuel cost, and tailpipe emissions from the conventional internal combustion engine vehicles. In response to these desires, electric vehicles have been developed that incorporate an electric drive system. The cost of owning an electric scooter is perceived to be high due to high cost of battery maintenance and low infrastructure for recharging and fear of range anxiety are affecting increased adaption of electric vehicles.

Because of the above mentioned perception of high cost and risk, sales of electric scooters have been falling. On the other side, the sale of conventional engine scooters has been increasing annually. This increased sale of internal combustion engine has high impact on the environment due to combustion emission.

Over the period of time IC Engine technology has been proved for its reliability and hence there is a high confidence for petrol engine vehicle and electric scooters have poor sentiment for buyers towards its purchase. Hence electric scooters are always used as alternative option and never the primary source of commuting.

With all the above mentioned negative remarks, buyer‘s perception on electric vehicle has led to a declined popularity of electric scooter even though its contribution to clean environment is neglected. Existing petrol vehicles are inefficient and result in higher fuel consumption.

There exists a need to come up with a device to overcome the above-mentioned points.

SUMMARY OF THE INVENTION
The following summary provides an introduction to selected concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter. Further, while certain disadvantages of other technologies may be noted or discussed herein, the claimed subject matter is not intended to be limited to implementations that may solve or address any or all of the disadvantages of those other technologies. The sole purpose of this summary is to present some concepts of the claimed subject matter in a simplified form as a prelude to the more detailed description that is presented below.

One object of the invention is to provide an aftermarket electric vehicle conversion kit to the used vehicle which is driven with rear wheel by an internal combustion engine with an alternative drive system which will run on electricity on the same existing vehicle platform.

Another object of the invention is to provide conversion kit for converting an internal combustion (IC) engine powered two-wheeler vehicle to electric powered two wheeler vehicle with 2 modes of operation namely, as full electric vehicle and/or IC engine running with electric motor assistance.

Yet another object of the invention is to provide a conversion kit with integrated hybrid throttle and mode selection switch to adapt or adjust the mode of operation of the two wheeler vehicle.

Yet another object of the invention is to provide a retrofit kit to be fitted to a rear wheel for a two-wheeler vehicle with an internal combustion engine.

Yet another object of the invention is to provide a method for mounting wheel mountable electric hub motorto the existing wheel of a two-wheeler vehicle using fasteners and without any fabrication job or permanent modification to the vehicle.

According to one aspect of the invention, a conversion kit for converting an internal combustion (IC) engine powered two-wheeler vehicle to electric powered two wheeler vehicle with 2 modes of operation is disclosed. The conversion kit comprises:
a. a wheel mountable electric hub motor having a square shaped protrusion on the solid / hollow motor shaft;
b. a mounting washer/bracket with the square cut which will match with protrusion on the solid/ hollow motor shaft to arrest the rotation of the solid/ hollow motor shaft;
c. a motor mount plate adapted to fit wheel mountable electric hub motor to the existing wheel without any changes;
d. a motor left hand (LH) Cover adapted to fit the wheel mountable electric hub motor;
e. a magnetic plate mounted to the wheel mountable electric hub Motor aligned with a speed sensor for enabling vehicle speed sensing;
f. a display for indicating the status of electric motor, battery, and temperature of electric motor.

According to one aspect of the invention, the conversion kit comprises an integrated hybrid throttle to adapt or adjust the mode of operation of the two wheeler vehicle.

Other features of the embodiments will be apparent from the accompanying drawings and from the detailed description that follows.

BRIEF DESCRIPTION OF THE DRAWINGS
Other objects and advantages of the present invention will become apparent to those skilled in the art upon reading the following detailed description of the preferred embodiments, in conjunction with the accompanying drawings, wherein like reference numerals have been used to designate like elements, and wherein:

FIG. 1illustrates a retrofittable parallel electric hybrid conversion kit with connections between the components according to an embodiment of the invention;

FIG. 2 illustrates a side view of the scooter with the retrofittable kit in the scooter according to an embodiment of the invention;

FIG. 3 illustrates the sectional view of the wheel mountable electric hub motor according to an embodiment of the invention;

FIG. 4 illustrates the section of the wheel with the Motor Mount plate and Motor LH Cover for mounting the Electric Hub motor with the wheel according to an embodiment of the invention;

FIG. 5 illustrates the section of the Hollow / Solid Motor shaft with the square shaped protrusion for arresting the angular rotation of the Motor shaft and the mounting washer /bracket with square cut;

FIG.6 illustrates the section view of the Electric Hub with Hollow / Solid Motor shaft assembly on to the rear wheel of the scooter using the Motor mount plate and Motor LH cover;

FIG.7 illustrates the Display Integrated Hybrid throttle body with Integrated throttle housing, Information Display screen and Mode selection switch;

The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present invention in any way.

DETAILED DESCRIPTION OF THE INVENTION
It is to be understood that the present disclosure is not limited in its application to the details of composition set forth in the following description. The present disclosure is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting.

The use of “including”, “comprising” or “having” and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. The terms “a” and “an” herein do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced item.
Reference throughout this specification to “one embodiment,” or similar language means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, appearances of the phrases “one embodiment,” and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment, different embodiments, or component parts of the same or different illustrated invention.

Each statement of an embodiment is to be considered independent of any other statement of an embodiment despite any use of similar or identical language characterizing each embodiment.

The wording “one embodiment,” or the like, does not appear at the beginning of every sentence in the specification, is merely a convenience for the reader’s clarity. However, it is the intention of this application to incorporate by reference the phrasing “an embodiment,” and the like, at the beginning of every sentence herein where logically possible and appropriate.

Terminology and Definitions
Two wheeler vehicle: two wheeler vehicle includes petrol scooter.Two wheeler vehicle is used interchangeably with petrol scooter in the present invention.
Parallel hybrid: Parallel hybrid refers to a vehicle which can be run in two different modes of power, namely petrol and electricity.
Motor LH: Motor Left Hand Cover

According to one embodiment, the present invention discloses a conversion kit (100) for converting an internal combustion (IC) engine powered two-wheeler vehicle to electric powered two wheeler vehicle with 2 modes of operation.

According to one embodiment of the invention, the Display integrated hybrid throttle (103,203,702) comprises mode Selection Switch (104, 204,703) for selecting the mode of operation either Mode 1 with or Mode 2 where mode 1 is parallel electric and petrol hybrid mode and mode 2 is pure electric mode. the integrated hybrid throttle controller (103, 203) operates IC engine and electric motor.

According to one embodiment of the invention, the two wheeler vehicle is run as full electric vehicle in mode 1 and IC engine running with electric motor assistance in mode 2.

For better understanding of the invention, FIG. 1 and FIG. 2 are elucidated jointly. As shown in FIG. 1 & 2, the conversion kit includes:
a. a wheel mountable electric hub motor (101) having a square shaped protrusion (308) on the solid / hollow motor shaft (307);
b. a mounting washer/bracket with the square cut (501) which will match with protrusion (308) on the solid/ hollow motor shaft (307) to arrest the rotation of the solid/ hollow motor shaft (307);
c. a motor mount plate (302) adapted to fit wheel mountable electric hub motor (101) to the existing wheel without any changes;
d. a motor left hand (LH) Cover (303) adapted to fit the wheel mountable electric hub motor (101);
e. a magnetic plate (305) mounted to the wheel mountable electric hub Motor (101) aligned with a speed sensor (306) for enabling vehicle speed sensing;
f. a display (106, 206, 701) for indicating the status of electric motor, battery, and temperature of Electric motor;
and
the conversion kit comprises a Display integrated hybrid throttle (103, 203, 702) to adapt or adjust the mode of operation of the two wheeler vehicle.

As shown in FIG. 2, fitting the conversion kit 200 on to the existing petrol scooters converts an existing petrol scooter with Internal engine in the rear wheel to an electric hybrid scooter which can be used as parallel Electric Hybrid scooter with both Electric and petrol fuel.

In one embodiment of the invention, a retrofittable wheel mountable Hollow/Solid shaft motor which can be mounted on the vehicle rear wheel of the scooter is disclosed, wheel mountable Hollow/Solid shaft motor construction consists of a Hollow/Solid Motor shaft, Motor Mount plate , Motor LH Cover , Magnet plate , speed sensor and One way clutch

In one embodiment of the invention Display integrated Hybrid throttle controller (103,203,702) which incorporates a rotary potentiometer/Hall sensor and regular throttle tube is placed in the handle bar. Arrangement is easy to mount and dismount.

In one embodiment of the invention, a MODE selection switch (104, 204,703) is integrated with the Display integrated Hybrid throttle controller (103, 203, 702) which gives the convenience of choosing between internal combustion engine with parallel electric drive or electric motor drive is disclosed.

FIG. 3 illustrates the left hand side view of the wheel mountable Electric Hollow / Solid shaft motor. Wheel (301) of the scooter is adapted with the Motor mount plate (302), Motor LH Cover (303) can be mounted onto the Motor mount plate using fasteners. This arrangement helps to adapt the Wheel mountable Hollow / Solid shaft motor to the rear wheel of the scooter without any fabrication job.

According to one embodiment of the invention, the hollow / solid shaft (307) which has the square shaped protrusion (308) will be fixed with the Mounting washer (309) with square cut which facilitates the arresting of the stator of the motor. Magnet plate (305) is fixed with the wheel bolt (310), the Speed sensor (306) which is fixed to the Motor shaft (307) will detect the vehicle speed.

According to one embodiment of the invention, when the scooter is operated in mode 1: Electric hybrid mode speed sensor (306) will detect the vehicle speed. when the vehicle is starting and the throttle is given Petrol engine will start to run the wheel during this stage electric motor will also run the wheel there by assisting the petrol engine with additional power. this electric motor assistance will reduce the torque load on the petrol engine and will help in achieving higher petrol efficiency. After vehicle has gained some speed (20 Kmph) electric motor switches off. Electric motor will assist the petrol engine as and when the scooter speed is lower and requires more power. One way clutch (304) if provided within the motor will help in reducing the motor drag torque which further increases the petrol vehicle efficiency. This system/ arrangement can work without one way clutch also.

Wheel mountable Electric hub motor without one way clutch (304) will have some electric motor drag which impacts on the petrol running efficiency. This power loss due to drag can be addressed by having a electric hub motor with lesser cogging torque.

According to one embodiment of the invention, the magnet plate (305) triggers the Speed sensor (306) such that when the two wheeler vehicle is running in petrol mode (mode 2), the electric motor is ON to provide additional power to the two wheeler vehicle when the speed of the two wheeler vehicle is in the range of 0 to 20 kmph.

FIG. 4 illustrates the left hand side view of the Wheel mountable Electric Hollow / Solid shaft motor. Wheel (401) of the scooter is adapted with the Motor mount plate (402), Motor LH Cover (403) can be mounted onto the Motor mount plate using fasteners. This arrangement helps to adapt the Wheel mountable Hollow / Solid shaft motor to the rear wheel of the scooter without any fabrication job.

As shown in FIG. 5 Hollow / Solid Motor shaft part which has a square shaped protrusion (502) and Mounting washer/Bracket with square cut ( 501) is arranged. The Hollow / Solid Motor shaft has a Protrusion on one end with as square section (502). During assembly of Hollow / Solid Motor shaft (502) mounting washer/Bracket (501) with a square section cut. Square section cut (501) is aligned with the Square section of the Hollow / Solid Motor shaft (502).

With reference to FIG 6, Motor mount plate (602), is mounted on to the wheel (601), then the motor which is mounted on motor LH Cover (603) is mounted to the Motor mount plate (602) using fasteners by doing this motor gets mounted to the rear wheel without any modification or Fabrication job.

FIG.7 illustrates the Display Integrated Hybrid Throttle controller 702.This type throttle body will eliminate an additional throttle body for controlling the electric motor speed is disclosed. This also incorporates Display area (701) for displaying information to the rider like battery charge status, Motor temperature status, overall status of the electric drive.

According to one embodiment of the invention, the conversion kit (100) is detachably mounted onto the rear wheel of a two-wheeler vehicle.

According to one embodiment of the invention, the combined operation of petrol engine and electric motor reduces the load on the existing petrol engine of the two wheeler vehicle and thereby reduces the higher petrol fuel usage and increases the fuel efficiency of the two wheeler vehicle.

According to one embodiment of the invention, a method (200) of mounting wheel mountable electric hub motor (101,201) to the existing wheel of a two-wheeler vehicle using fasteners and without any fabrication job or permanent modification to the vehicle is disclosed. The method comprises:
a) a step of attaching the Motor mount plate (602) on to the wheel (601);
b) a step of mounting of the Motor left hand (LH) Cover (603) to the motor mount plate (602).
c) a step of arresting/Aligning the Hollow/ solid motor shaft to the square shaped protrusion on the Hollow/Solid Motor shaft (308) into the Square cut on the mounting washer/bracket.

According to one embodiment of the invention, the conversion kit achieves parallel petrol electric hybridization and pure electric mode of operation for the two wheeler application. With the present invention, existing owners of the scooters with internal combustion engine can have the benefit of electric hybrid vehicle which will be high efficient than the pure petrol vehicle and Electric vehicle which will be low on operation cost with zero emission.

According to one embodiment of the invention, GSM Based onboard hardware enables the smart connectivity as well with benefits of geo fencing, cloud based asset monitoring. The present invention gives the opportunity to have the comfort of having the two modes of vehicle in one scooter there by it will not burden the owner for owning two scooters separately, which otherwise will be expensive to own two scooters and which will require additional space for parking and other related expenses for maintenance and running. The present invention will also help to reduce the emission from the older vehicle since older vehicle pollute more than new vehicle.

According to one embodiment of the invention, one way clutch integrated Electric hub motor will further enable efficient performance without compromising the petrol efficiency and contributing to higher reliability of the electric power train components. Adaption of Electric Motor to the rear wheel also gives a opportunity to convert the petrol scooters to electric Hybrid vehicle. Where in during the vehicle take off Electric motor can assist the petrol engine. Hybridization of the petrol vehicle can enable very high fuel efficiency for the petrol engine as mentioned earlier

The present invention gives the convenience of easy adaptability to a parallel hybrid scooter with two modes including a full electric scooter at low cost and without buying a new scooter.

While various embodiments have been described above, they have been presented by way of example and not limitation. It will be apparent to persons skilled in the relevant art(s) that various changes in form and detail can be made therein without departing from the spirit and scope. In fact, after reading the above description, it will be apparent to one skilled in the relevant art(s) how to implement alternative embodiments. Thus, the present embodiments should not be limited by any of the above described embodiments.

Reference numerals

Wheel - 301, 401, 601
Motor mount plate - 302, 402, 602
Motor LH cover - 303, 403, 603
One way clutch - 304
Magnet plate - 305
Speed sensor - 306
Motor hollow/solid shaft 307, 502
Square shaped protrusion on hollow/solid shaft 308
Mounting washer/bracket with squarecut 501, 309
Wheel mountable electric hub motor 101, 201
Motor control unit 102, 202
Battery 105, 205
Display Integrated hybrid throttle controller 103, 203, 702
Mode selection switch 104, 204, 703
Information display screen 106, 206, 701
Battery charging port 107, 207
Wheel bolt 310
,CLAIMS:We claim

1. A conversion kit (100) for converting an internal combustion (IC) engine powered two-wheeler vehicle to electric powered two wheeler vehicle with 2 modes of operation, the conversion kit comprising:
a. a wheel mountable electric hub motor (101) having a square shaped protrusion (308) on the solid / hollow motor shaft (307);
b. a mounting washer/bracket with the square cut (501) which will match with protrusion (308) on the solid/ hollow motor shaft (307) to arrest the rotation of the solid/ hollow motor shaft (307);
c. a motor mount plate (302) adapted to fit wheel mountable electric hub motor (101) to the existing wheel without any changes;
d. a motor left hand (LH) Cover (303) adapted to fit the wheel mountable electric hub motor (101);
e. a magnetic plate (305) mounted to the wheel mountable electric hub Motor (101) aligned with a speed sensor (306) for enabling vehicle speed sensing;
f. a display (106, 206, 701) for indicating the status of electric motor, battery, and temperature of electric motor;
characterized in that,
the conversion kit comprises a display integrated hybrid throttle (103, 203, 702) to adapt or adjust the mode of operation of the two wheeler vehicle.

2. The conversion kit (100), as claimed in claim 1, wherein the integrated hybrid throttle (103, 203, 702) comprises Mode Selection Switch (104, 204, 703) for selecting the mode of operation either Mode 1 with or Mode 2 where mode 1 is parallel electric and petrol hybrid mode and mode 2 is pure electric mode.
3. The conversion kit (100) as claimed in claim 1, wherein the two wheeler vehicle is run as full electric vehicle in mode 1 and IC engine running with electric motor assistance in mode 2.

4. The conversion kit (100) as claimed in claim 1, wherein the conversion kit (100) is detachably mounted onto the rear wheel of a two-wheeler vehicle.

5. The conversion kit (100) as claimed in claim 1, wherein the Display integrated hybrid throttle controller (103, 203, 702) operates IC engine and electric motor.

6. The conversion kit (100) as claimed in claim 1, wherein the magnet plate (305) triggers the Speed sensor (306) such that when the two wheeler vehicle is running in petrol mode (mode 2), the electric motor is ON to provide additional power to the two wheeler vehicle when the speed of the two wheeler vehicle is in the range of 0 to 20 kmph.

7. The conversion kit (100) as claimed in claim 1, wherein the combined operation of petrol engine and electric motor reduces the load on the existing petrol engine of the two wheeler vehicle and thereby reduces the higher petrol fuel usage and increases the fuel efficiency of the two wheeler vehicle.

8. A method (200) of mounting wheel mountable electric hub motor (101, 201) to the existing wheel of a two-wheeler vehicle using fasteners and without any fabrication job or permanent modification to the vehicle, the method comprising:
a) a step of attaching the Motor mount plate (602) on to the wheel (601);
b) a step of mounting of the Motor left hand (LH) Cover (603) to the motor mount plate (602);
c) a step of arresting/Aligning the Hollow/ solid motor shaft to the square shaped protrusion on the Hollow/Solid Motor shaft (308) into the Square cut on the mounting washer/bracket.

9. The method (200) as claimed in claim 6, wherein the wheel is a rear wheel of the two wheeler vehicle.