DESC:FIELD
The present disclosure relates to the field of electrical vehicles.
BACKGROUND
The background information herein below relates to the present disclosure but is not necessarily prior art.
In a battery-operated electric vehicle, the driving range of the vehicle is limited as the battery is capable of delivering power only up to a certain extent. Further, accessorial systems such as the HVAC system of the vehicle are also dependent on the battery for power. It becomes difficult for the battery to provide power for driving the vehicle and powering the HVAC system since the amount of power which would be required is uncertain. For example, if a large amount of power is utilized only for driving the vehicle, insufficient power would be available for running the HVAC system, thereby causing discomfort to passenger.
Conventionally, efforts have been made to optimize the use of battery power for extending the driving range of the electric vehicle while powering the HVAC system at the same time. Providing more battery packs would be an obvious solution for deriving more power therefrom. However, mechanisms of the conventional solutions are either too complex or incur a huge cost to the vehicle.
Therefore, there is felt a need for providing a solution for optimally utilizing the battery power to drive both the vehicle and the HVAC system
OBJECT
Some of the objects of the present disclosure, which at least one embodiment herein satisfies, are as follows:
An object of the present disclosure is to provide a traction motor mechanism integrated with an HVAC system.
Another object of the present disclosure is to provide a traction motor mechanism integrated with an HVAC system which is inexpensive and simple.
Yet another object of the present disclosure is to provide a traction motor mechanism integrated with an HVAC system, which optimally utilizes power for both running the vehicle and air conditioning the insides of the vehicle.
SUMMARY
The present disclosure relates to electric vehicles, and envisages a vehicle traction mechanism integrated with an HVAC system. The mechanism comprises a plurality of batteries and a traction motor coupled to the batteries. The traction motor is configured to derive power from the batteries for running the vehicle. A pair of potentiometers is connected to the accelerator pedal hooks of the vehicle, to continuously detect the amount of power required by the traction motor to drive the vehicle, and periodically generate sensed signals. A controller is coupled to the potentiometers, the batteries and the motor. The controller is configured to receive the sensed signals, and control the frequency and voltage of power supplied to the traction motor based on the sensed signals. A reciprocating compressor is integrally coupled to the traction motor to draw power from the traction motor for enabling air conditioning of the vehicle.
Preferably, the compressor is configured to draw a predetermined fraction of power from the traction motor.
In an embodiment, the controller includes a memory and a processor. The memory is configured to store values corresponding to the torque of the motor at various speed references and braking control. The processor is configured to receive the sensed signals, and is further configured to vary the frequency and voltage of the power supplied to the motor based on the stored values and the sensed signals.
In an embodiment, the controller is a variable frequency drive.
In a preferred embodiment, the compressor is coupled to the traction motor with the help of gears and belt drive to allow the compressor to draw power from the motor during both forward drive and reverse drive.
BRIEF DESCRIPTION OF DRAWING
A vehicle traction mechanism integrated with an HVAC system, of the present disclosure will now be described with the help of the accompanying drawing, in which:
Figure 1 illustrates a schematic view of the mechanism.
LIST OF REFERENCE NUMERALS
100 – traction mechanism
102 – batteries
104 – traction motor
106 – compressor
108 – potentiometer
110 – controller
DETAILED DESCRIPTION
Embodiments, of the present disclosure, will now be described with reference to the accompanying drawing.
Embodiments are provided so as to thoroughly and fully convey the scope of the present disclosure to the person skilled in the art. Numerous details, are set forth, relating to specific components, and methods, to provide a complete understanding of embodiments of the present disclosure. It will be apparent to the person skilled in the art that the details provided in the embodiments should not be construed to limit the scope of the present disclosure. In some embodiments, well-known processes, well-known apparatus structures, and well-known techniques are not described in detail.
The terminology used, in the present disclosure, is only for the purpose of explaining a particular embodiment and such terminology shall not be considered to limit the scope of the present disclosure. As used in the present disclosure, the forms "a,” "an," and "the" may be intended to include the plural forms as well, unless the context clearly suggests otherwise. The terms "comprises," "comprising," “including,” and “having,” are open-ended transitional phrases and therefore specify the presence of stated features, elements, modules, units and/or components, but do not forbid the presence or addition of one or more other features, elements, components, and/or groups thereof.
When an element is referred to as being "mounted on," “engaged to,” "connected to," or "coupled to" another element, it may be directly on, engaged, connected or coupled to the other element. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed elements.
Terms such as “inner,” “outer,” "beneath," "below," "lower," "above," "upper," and the like, may be used in the present disclosure to describe relationships between different elements as depicted from the figures.
A vehicle traction mechanism (100), of the present disclosure, integrated with an HVAC system will now be disclosed with reference to Figure 1.
The mechanism (100) is a part of an electric vehicle. The mechanism (100) comprises a plurality of batteries (102) and a traction motor (104) coupled to the batteries (102). The traction motor (104) is configured to derive power from the batteries (102) for running the vehicle. The wheels (112) of the vehicle are coupled to the traction motor (104). The traction motor (104) is further configured to produce power during reverse drive of the vehicle. A pair of potentiometers (108) is connected to the accelerator pedal hooks of the vehicle. The potentiometers (108) are configured to continuously detect the amount of power required by the traction motor (104) to drive the vehicle. The potentiometers (108) are further configured to periodically generate sensed signals based on the detected amount of power. The mechanism further includes a controller (110) coupled to the potentiometers (108). The controller (110) is configured to receive the sensed signals. The controller (110) is further coupled to the batteries (102) and the motor (104). The controller (110) is configured to control the frequency and voltage of power supplied to the traction motor (104) based on the sensed signals. A reciprocating compressor (106), of the HVAC system, is integrally coupled to the traction motor (104). The compressor (106) is configured to draw power from the traction motor (104) for enabling air conditioning of the vehicle.
The compressor (106) is configured to draw a predetermined fraction of power from the traction motor (104). The total amount of power, therefore, derived by the motor (104) from the batteries (102) is the amount of power required for driving the vehicle along with the amount of power required for air conditioning.
The controller (110) includes a memory and a processor. The memory is configured to store values corresponding to the torque of the motor (104) at input parameters which include various speed references and braking control. The processor is configured to receive the sensed signals. The processor is further configured to vary the frequency and voltage of the power supplied to the motor (104) based on the stored values in the memory and the sensed signals.
Typically, the controller (110) is also configured to receive sensed signals by temperature sensors configured to sense temperature within the occupant space of the vehicle. Also, the controller (110) is configured to change speed of the compressor (106) as per cooling requirement input provided by the user.
In an embodiment, the controller (110) is a variable frequency drive.
In one embodiment, the compressor (106) is coupled to the traction motor (104) with the help of gears and belt drive to allow the compressor (106). The gears and belt drives enable the compressor (106) to draw power from the motor (104) during both forward drive and reverse drive of the vehicle.
Thus, the speed of operation of the compressor (106) depends on the speed of the traction motor (104).
The foregoing description of the embodiments has been provided for purposes of illustration and not intended to limit the scope of the present disclosure. Individual components of a particular embodiment are generally not limited to that particular embodiment, but, are interchangeable. Such variations are not to be regarded as a departure from the present disclosure, and all such modifications are considered to be within the scope of the present disclosure.
TECHNICAL ADVANCEMENTS
The present disclosure described herein above has several technical advantages including, but not limited to, the realization of a traction motor mechanism integrated with an HVAC system:
• in an inexpensive and simple way; and
• which optimally utilizes power for both running the vehicle and air conditioning the insides of the vehicle
The embodiments herein and the various features and advantageous details thereof are explained with reference to the non-limiting embodiments in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
The foregoing description of the specific embodiments so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.
The use of the expression “at least” or “at least one” suggests the use of one or more elements or ingredients or quantities, as the use may be in the embodiment of the disclosure to achieve one or more of the desired objects or results.
While considerable emphasis has been placed herein on the components and component parts of the preferred embodiments, it will be appreciated that many embodiments can be made and that many changes can be made in the preferred embodiments without departing from the principles of the disclosure. These and other changes in the preferred embodiment as well as other embodiments of the disclosure will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the disclosure and not as a limitation.

,CLAIMS:WE CLAIM:
1. A vehicle traction mechanism (100) integrated with an HVAC system, said mechanism (100) comprising:
• a plurality of batteries (102);
• a traction motor (104) coupled to said batteries (102), said traction motor (104) configured to derive power from said batteries (102) for running said vehicle;
• a pair of potentiometers (108) connected to the accelerator pedal hooks of said vehicle, said potentiometers (108) configured to continuously detect the amount of power required by said traction motor (104) to drive said vehicle, and further configured to periodically generate sensed signals;
• a controller (110) coupled to said potentiometers (108), said controller (110) configured to receive said sensed signals, said controller (110) further coupled to said batteries (102) and said motor (104), said controller (110) configured to control the frequency and voltage of power supplied to said traction motor (104) based on said sensed signals; and
• a reciprocating compressor (106) integrally coupled to said traction motor (104) to draw power from said traction motor (104) for enabling air conditioning of said vehicle.
2. The mechanism (100) as claimed in claim 1, wherein said compressor (106) is configured to draw a predetermined fraction of power from said traction motor (104).
3. The mechanism (100) as claimed in claim 1, wherein said controller (110) includes:
• a memory configured to store values corresponding to the torque of the motor (104) at various speed references and braking control; and
• a processor configured to receive the sensed signals, and further configured to vary the frequency and voltage of the power supplied to said motor (104) based on said stored values and said sensed signals.
4. The mechanism (100) as claimed in claim 1, wherein said controller (110) is a variable frequency drive.
5. The mechanism (100) as claimed in claim 1, wherein said compressor (106) is coupled to said traction motor (104) with the help of gears and belt drive to allow said compressor (106) to draw power from said motor (104) during both forward drive and reverse drive.

Dated this 15th Day of March, 2021

MOHAN RAJKUMAR DEWAN
of R.K. DEWAN & COMPANY
IN/PA-25
APPLICANT’S PATENT ATTORNEY

TO,
THE CONTROLLER OF PATENTS
THE PATENT OFFICE, AT CHENNAI