Description:DESCRIPTION OF INVENTION
FIELD OF INVENTION
The present invention generally relates to the field of electric vehicles;
More particularly, the present invention relates to an electric drivetrain with a manual transmission.
BACKGROUND OF THE INVENTION
Traditional internal combustion engine (ICE) vehicles have relied on manual transmissions to allow the driver to select different levels of torque and power output because the crankshaft is constantly rotating contrary to the electric motor at 900 rpm at least. These transmissions typically include a set of gears that can be engaged or disengaged through the use of a clutch and a gear shift lever.
Electric vehicles have become increasingly popular due to their environmental friendliness and efficiency. However, the design of electric vehicles can be limited by factors such as weight, size, and battery capacity. In particular, L5N category vehicles, electric bicycles and scooters, have traditionally been limited in terms of performance and range due to their small size and weight.
With the increasing demand for electric vehicles (EVs), there has been a shift towards automatic transmissions (direct drives) through the use of automatic transmissions or single-speed drivetrains because the electric motors have instant torque and a linear torque delivery and can directly be connected to the road wheels after a single reduction. While these systems have the advantage of simplicity and ease of use, they do not provide the level of control and customization offered by a manual transmission.
There is a need for a transmission system for EVs that offers the benefits of both a manual transmission and an electric drivetrain. The electric drivetrain with a manual transmission described in the present disclosure aims to meet this need by combining the traditional gearbox with an electric motor, providing the driver with control over the torque output of the motor through the use of gears. This allows for a more efficient and customizable driving experience in L5 N category vehicles.
The present invention describes a multi gear manual transmission system for electric vehicles.
OBJECT OF THE INVENTION
The primary object of the present invention is to provide a multi-gear transmission system which can improve the vehicle's acceleration and torque delivery, which is important for high-performance electric vehicles;
Further object of the present invention is to provide a better energy efficiency by using different gear ratios, the electric motor can operate more efficiently, which can extend the vehicle's range and reduce energy consumption.
Further object of the present invention is to provide more flexibility in how power is delivered to the wheels, allowing for smoother acceleration and better performance in different driving conditions
SUMMARY OF THE INVENTION
Embodiments of the present disclosure present technological improvements as solution to one or more of the above-mentioned technical problems recognized by the inventor in conventional practices and existing state of the art.
The present disclosure seeks to provide a multi gear transmission system for electric vehicles that overcomes the limitations of traditional automatic gearbox systems.
According to an aspect of the present invention, the system comprises a motor controller that receives input from a throttle sensor, a motor that provides power to the clutch gear, and a series of gears that transmit power to the road wheels. The gearbox (202) comprises a main gear, a set of selector gears, lay shaft gears, a differential main gear, a differential gearbox, and a propeller shaft (201). The clutch gear (103, 104) is engaged to transmit power from the motor to the gearbox, which is then transmitted through the series of gears to provide a range of output speeds and torque values to the road wheels.
According to further aspect of the present invention, the invention provides a multi gear manual transmission system that gives higher output in terms of torque and power against the energy used. By using a series of gears, the system can achieve various output speeds and torque values without requiring as much power from the motor as the automatic gearboxes/direct drive systems. This greatly increases the efficiency of the system and extend the battery life of the electric vehicle.
The objects and the advantages of the invention are achieved by the process elaborated in the present disclosure.
BRIEF DESCRIPTION OF DRAWINGS:
The accompanying drawings constitute a part of this specification and illustrate one or more embodiments of the invention. Preferred embodiments of the invention are described in the following with reference to the drawings, which are for the purpose of illustrating the present preferred embodiments of the invention and not for the purpose of limiting the same.
For simplicity and clarity of illustration, the drawing figures illustrate the general manner of construction, and descriptions and details of well-known features and techniques may be omitted to avoid unnecessarily obscuring the invention. Additionally, elements in the drawing figures are not necessarily drawn to scale. For example, the dimensions of some of the elements in the figures may be exaggerated relative to other elements to help improve understanding of embodiments of the present invention. The same reference numerals in different figures denotes the same elements.
In the drawings:
Fig. 1 illustrates the multi gear manual transmission system for electric vehicles without casing (100) showing the components of the system and their interconnections in accordance to the embodiment of the present invention;
Fig. 2 illustrates the motor controller throttle (power train) (200) in accordance to the embodiment of the present invention;
Fig. 3 illustrates the motor meshed with gear transmission system (300) in accordance to the embodiments of the present invention.

DESCRIPTION OF THE INVENTION
The following specification describes the invention. Although some modes of carrying out the present disclosure have been disclosed, those skilled in the art would recognize that other embodiments for carrying out or practicing the present disclosure are also possible.
The present invention provides a multi gear manual transmission system for electric vehicles.
The present invention is particularly directed towards an L5N category vehicle that uses an electric motor as its primary power source. The electric motor is coupled with a multi-geared manual gearbox, allowing for multiple gear ratios that optimize the motor's performance. The gearbox can provide a mechanical advantage that reduces the load on the electric motor, increasing the overall efficiency of the vehicle.
According to an embodiment of the present invention, the said electric drivetrain includes an electric motor (101) mechanically mated to a four-speed gearbox. The electric motor provides power to the vehicle through the gearbox, which allows the driver to select different levels of torque at different motor speeds through the use of gears.
The electric motor (101) may be a brushless DC motor or any other suitable type / sub-type of electric motor. The gearbox may be a manual transmission or any other suitable type of transmission system. The number of gears and the gear ratios may be varied as desired to provide the desired torque and speed characteristics for the vehicle.
The system also includes a clutch lever (104) to couple the motor shaft (102), mounted at the rear end of the vehicle, to the gearbox. The clutch lever allows the driver to engage or disengage the motor from the gearbox as needed. The clutch may be a mechanical clutch or any other suitable type of clutch.
The gear changing pattern for the system is 1-N-2-3-4, where N is the neutral position and 1 is the largest gear. The larger the gear, the lower the speed and the higher the torque provided by the system. This allows the driver to select the appropriate level of torque for the given driving conditions. The gear shift lever may be located in the traditional location within reach of the driver, or it may be located in any other suitable location.
The electric drivetrain system with a manual transmission described herein provides the advantage of operating geared vehicles, combining the multi gear manual shifting gearbox with an electric motor. This allows the driver to have control over the torque output of the motor, providing a more customizable and efficient driving experience. The system may be used in a variety of L5 N category vehicles, passenger cars, trucks, and buses.
The electric drivetrain system with a manual transmission described herein provides the advantage of operating geared vehicles, combining multi gear gearbox with an electric motor. This allows the driver to have control over the torque output of the motor, providing a more customizable and efficient driving experience.
The disclosed invention can be implemented in various category vehicles such as L5N, electric bicycles, electric scooters, and electric tricycles. The electric motor and gearbox can be integrated into the vehicle’s design, with the gearbox located in close proximity to the motor for optimal performance.
Fig. 1 illustrates the multi gear manual transmission system for electric vehicles without casing (100) showing the components of the system such as motor (101), motor shaft (102), clutch assembly with clutch gear (103), clutch assembly meshing with motor shaft (104), and internal gears (105).
Fig. 2 shows motor controller throttle (power train) (200) consisting of propeller shaft (201) and complete gearbox with propeller shaft and motor (202).
Fig. 3 illustrates the motor meshed with gear transmission system (300) consisting of motor wires area (301), controller (302), connections for motor wire (303), and electronic throttle (304).
The multi gear manual transmission system for electric vehicles described herein includes a motor (101), a clutch gear (103), a main gear, a selector cross, 1/2/3/4th gears, lay shaft gears, a differential main gear, a differential gearbox, a propeller shaft (201), and road wheels.
The motor controller is responsible for controlling the amount of current supplied to the motor based on the input received from the throttle sensor (304). The controller uses the throttle position with respect to the voltage supplied from the throttle (304) and various other inputs to anticipate how much current should be provided to the motor (101).
The motor (101) provides power to the clutch gear (103) via the motor controller (302). The motor (101) is typically a three-phase electric motor that is capable of producing a range of torque and speed values depending on the current supplied by the motor controller (302).
According to an embodiment of the present invention, the motor controller (302) through the throttle position with respect to the voltage supplied from the throttle and various other inputs anticipates how much current should be provided to the Motor (101). When current is supplied to the motor in 3 phases the motor does its function and the motor shaft (102) rotates.
The motor is connected to the clutch gear (103), which transmits power to the main gear. The main gear is connected to the selector cross, which allows the driver to select different gears (1st, 2nd, 3rd, or 4th) for different driving conditions. The selected gear then transmits power to the lay shaft gears, which transmit the power to the differential main gear. The differential main gear is connected to the differential gearbox, which transmits power to the propeller shaft. The propeller shaft (201) is connected to the road wheels, which provide motion to the vehicle.
The gearbox system can reduce the power required from the motor by at least 1.2 times compared to an automatic gearbox, which can improve the efficiency and battery life of the vehicle. The system is a multi-gear system with an electric powerhouse, which can reduce maintenance, noise levels, and improve reliability compared to traditional internal combustion (IC) engine systems.
The gearbox system can be controlled by a motor controller (302), which can anticipate the required current based on the throttle position and other inputs, and adjust the power to the motor accordingly.
The present invention is not limited to the specific embodiments described herein, as it is understood that various modifications and changes can be made to the disclosed concept without departing from the scope and spirit of the invention.
, Claims:1. A multi gear manual transmission system for electric vehicles, comprising:
- a motor (101),
- a clutch gear connected to the motor (103),
- a main gear connected to the clutch gear ,
- a selector cross for selecting one of four gear ratios,
- a series of lay shaft gears;
- a control unit for managing the operation of the transmission system (302);
characterized by different gears for achieving different output speeds and torque values, a propeller shaft (201) for transmitting power to the road wheels, and reduction in the power required by the motor by 1.2 times compared to an automatic gearbox.
2. The multi gear manual transmission system as claimed in Claim 1, wherein the lay shaft gears and differential gears are configured to achieve a first gear ratio that provides the highest torque output and the lowest speed, a second gear ratio that provides a slightly lower torque output and a slightly higher speed, a third gear ratio that provides a further reduction in torque output and a further increase in speed, and a fourth gear ratio that provides the lowest torque output and the highest speed.
3. The multi gear manual transmission system as claimed in Claim 1, wherein the motor is an electric motor (101) that is powered by a traction battery.
4. The multi gear manual transmission system as claimed in Claim 1, wherein the control unit receives input from a throttle (304) position sensor and other sensors to determine the appropriate current to provide to the motor based on the selected gear ratio.
5. The multi gear manual transmission system as claimed in Claim 1, wherein the selector cross is connected to a shifter mechanism that allows the driver to manually select the desired gear ratio.
6. The multi gear manual transmission system as claimed in Claim 1, wherein the clutch gear (103) is be engaged and disengaged through a hydraulic or electronic actuator.
7. The multi gear manual transmission system as claimed in Claim 1, wherein the control unit (302) manages the operation of the transmission system, taking into account factors such as the vehicle speed, battery charge level, and driver input.