DESC:CROSS REFERENCE TO RELATED APPLICATION
[001] This application is based on and derives the benefit of Indian Provisional Application 201741027707, the contents of which are incorporated herein by reference.
FIELD OF INVENTION
[002] The present disclosure relates generally to hybrid vehicles, and more particularly to methods and systems for managing fuel consumption in a hybrid vehicle.
BACKGROUND OF INVENTION
[003] Hybrid vehicles are vehicles that use two or more distinct power sources to power the vehicles. In conventional methods and systems, fuel economy in the hybrid vehicles can be improved by selecting a learning mode in which the vehicle can learn a driving schedule/habits/usage of a user. Based on the driving schedule/habits/usage of the user, predictions about future driving conditions of the hybrid vehicle are made. These predictions can be used to enable the power sources of the hybrid vehicle to provide power and enable the user to use the vehicle. Further, the predictions can be used to optimize the fuel economy on future trips for a specific travel route.
OBJECTS OF INVENTION
[004] The principal object of the embodiments herein is to provide methods and systems for managing fuel consumption in a hybrid vehicle.
[005] Another object of the embodiments herein is to calculate a net energy stored by a battery present in the hybrid vehicle at a regular interval of time.
[006] Another object of the embodiments herein is to provide a propulsive power and a low voltage load for the hybrid vehicle in motion by controlling a primary power source and a secondary power source based on the net energy stored by the battery when the net energy stored by a battery exceeds a pre-defined energy threshold of the battery.
BRIEF DESCRIPTION OF FIGURES
[007] This method is illustrated in the accompanying drawings, throughout which like reference letters indicate corresponding parts in the various figures. The embodiments herein will be better understood from the following description with reference to the drawings, in which:
[008] FIG. 1 is a block diagram illustrating various hardware components of a system for managing fuel consumption in a hybrid vehicle, according to embodiments as disclosed herein;
[009] FIG. 2 is a block diagram illustrating various hardware components of a power management unit, according to embodiments as disclosed herein;
[0010] FIG. 3 is a flow diagram illustrating a method for calculating an amount of energy supplied by a secondary power source to a battery, according to embodiments as disclosed herein;
[0011] FIG. 4 is a flow diagram illustrating the method for calculating the amount of energy dissipated by the battery, according to embodiments as disclosed herein;
[0012] FIG. 5 is a flow diagram illustrating the method for calculating a net energy stored by the battery, according to embodiments as disclosed herein;
[0013] FIG. 6 is a graph illustrating a condition for providing the propulsive power for the hybrid vehicle, according to embodiments as disclosed herein; and
[0014] FIG. 7 is a graph illustrating a condition for providing the low voltage load for the hybrid vehicle, according to embodiments as disclosed herein.

DETAILED DESCRIPTION OF INVENTION
[0015] The embodiments herein and the various features and advantageous details thereof are explained more fully with reference to the non-limiting embodiments that are illustrated in the accompanying drawings and detailed in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. Also, the various embodiments described herein are not necessarily mutually exclusive, as some embodiments can be combined with one or more other embodiments to form new embodiments. The term “or” as used herein, refers to a non-exclusive or, unless otherwise indicated. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein can be practiced and to further enable those skilled in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein
[0016] Embodiments herein may be described and illustrated in terms of blocks which carry out a described function or functions. These blocks, which may be referred to herein as units or modules or the like, are physically implemented by analog and/or digital circuits such as logic gates, integrated circuits, microprocessors, microcontrollers, memory circuits, passive electronic components, active electronic components, optical components, hardwired circuits and the like, and may optionally be driven by firmware and/or software. The circuits may, for example, be embodied in one or more semiconductor chips, or on substrate supports such as printed circuit boards and the like. The circuits constituting a block may be implemented by dedicated hardware, or by a processor (e.g., one or more programmed microprocessors and associated circuitry), or by a combination of dedicated hardware to perform some functions of the block and a processor to perform other functions of the block. Each block of the embodiments may be physically separated into two or more interacting and discrete blocks without departing from the scope of the disclosure. Likewise, the blocks of the embodiments may be physically combined into more complex blocks without departing from the scope of the disclosure.
[0017] Embodiments herein provide a system for managing fuel consumption in a hybrid vehicle. The system includes a primary power source; a secondary power source connected to the primary power source; a battery coupled to the secondary power source; and a power management unit connected between the primary power source and the secondary power source, wherein the power management unit comprises an energy meter configured for calculating an amount of energy supplied by the secondary power source to the battery, calculating the amount of energy dissipated by the battery and calculating a net energy stored by the battery at a regular time interval by comparing the amount of energy supplied by the secondary power source to the battery with the amount of energy dissipated by the battery; and a controller configured for determining whether the net energy stored by the battery is exceeding a pre-defined energy threshold of the battery by comparing the net energy with the pre-defined energy threshold of the battery, and providing a propulsive power and a low voltage load for the hybrid vehicle in motion by controlling the primary power source and the secondary power source based on the net energy stored by the battery when the net energy stored by the battery is exceeding the pre-defined energy threshold of the battery.
[0018] Referring now to the drawings, and more particularly to FIGS. 1 through 7, there are shown preferred embodiments.
[0019] FIG. 1 is a block diagram illustrating various hardware components of a system 100 for managing fuel consumption in a hybrid vehicle, according to embodiments as disclosed herein. The system 100 comprises a fuel source 102 such as a gasoline tank or a hydrogen tank, a primary power source 104, a secondary power source 106, a battery 108, a power management unit 110, and a power train 112.
[0020] The primary power source 104 can be an internal combustion engine or a fuel cell system connected to a suitable flywheel damper arrangement (not shown) which may be a single mass flywheel or a dual mass flywheel or any other arrangement which serve the purpose of flywheel. The flywheel is in turn is connected to the secondary power source 106. The secondary power source 106 can be a motor, a generator, a hydraulic machine, or a device that can function like both the generator and the motor. The secondary power source 106 can feed energy into the battery 108 and also draw the energy from the battery 108 for providing a propulsive power (i.e., power for the hybrid vehicle propulsion) and a low voltage load for the hybrid vehicle.
[0021] The battery 108 can be a high voltage DC battery coupled to the secondary power source 106 and can store energy supplied by the secondary power source 106. In an embodiment, the secondary power source 106 can supply energy to the battery 108 using a regenerative braking energy generated during a braking action of the vehicle. In another embodiment, the secondary power source 106 can supply energy to the battery 108 using a generative energy generated by the primary power source 104.
[0022] The secondary power source 106 can function as the generator to supply the energy into the battery 108. The secondary power source 108 can also function as the motor to draw the energy from the battery 108 to provide the propulsive power and the low voltage load to the power train 112 of the hybrid vehicle.
[0023] The power management unit 110 is connected between the primary power source 104 and the secondary power source 106 and communicates with the battery 108 to calculate an amount of energy supplied by the secondary power source 106, the amount of energy dissipated by the battery 108 and a net energy stored by the battery at a regular interval of time. In an embodiment, the net energy stored by the battery can also be calculated based on detecting one or more pre-defined events. When the net energy stored by the battery exceeds a pre-defined energy threshold of the battery 108, the power management unit 110 can control both the primary power source 104 and the secondary power source 106 for providing the propulsive power and the low voltage load to the power train 112 of the hybrid vehicle based on the net energy stored by the battery 108.
[0024] FIG. 2 is a block diagram illustrating various hardware components of a power management unit 110, according to embodiments as disclosed herein. The power management unit 110 comprises an energy meter 200, a controller 202, a memory 204.
[0025] The energy meter 200 can calculate the amount of energy supplied by the secondary power source 106 to the battery 108 and the amount of energy drawn/dissipated by the secondary power source 106 from the battery 108 (i.e., energy inflow/outflow of the battery 108). The energy supplied by the secondary power source 106 can be either the regenerative braking energy generated due to the braking action or generative energy generated by the primary power source 104, or a combination of. The energy meter 200 calculates the amount of energy inflow/outflow of the battery 108 based on readings or other information generated from at least one sensor (not shown) or multiple sensors in the hybrid vehicle. According to an example, the hybrid vehicle may include any number of different sensors such as speed sensors, trailer sensor, environmental sensor, incline sensor, battery sensor etc.
[0026] In an embodiment, the amount of energy supplied by the secondary power source 106 to the battery 108 is defined as the energy charging of the battery 108.
[0027] In an embodiment, the amount of energy dissipated by the battery 108 is defined as the energy dissipation of battery 108.
[0028] The energy meter 200 calculates the amount of energy inflow/outflow of the battery 108 based on the following factors:
(i) Determining whether the amount of charging of the battery 108 using regenerative braking energy is greater than a pre-defined charging amount threshold of the battery 108; and
(ii) Determining whether a velocity of the hybrid vehicle in motion is greater than a pre-defined velocity threshold of the hybrid vehicle.
[0029] The energy meter 200 calculates the amount of energy inflow into the battery 108 by collecting battery readings from the battery sensor connected to the battery 108 in the hybrid vehicle and determining whether the amount of charging of the battery 108 using regenerative braking energy is greater than a pre-defined charging amount threshold of the battery 108 based on the battery readings. The battery sensor in the hybrid vehicle generates battery readings based on the energy inflow into the battery 108.
[0030] Further, the energy meter 200 calculates the amount of energy inflow into the battery 108 by collecting speed/velocity readings from the speed sensor connected to wheels of the hybrid vehicle and determining whether the velocity of the hybrid vehicle in motion is greater than the pre-defined velocity threshold of the hybrid vehicle. The speed sensor in the hybrid vehicle generates speed/velocity readings based on rotational velocity of wheels of the hybrid vehicle.
[0031] Further, the energy meter 200 calculates the amount of energy outflow by the battery 108 by collecting the battery readings from the battery sensor in the battery 108 and determining whether the amount of charging of the battery 108 using regenerative braking energy is less than the pre-defined charging amount threshold based on the battery readings.
[0032] Further, the energy meter 200 calculates the amount of energy outflow by the battery 108 by collecting speed/velocity readings from the speed sensor connected to wheels of the hybrid vehicle and determining whether the velocity of the hybrid vehicle in motion is greater than the pre-defined velocity threshold of the hybrid vehicle.
[0033] Furthermore, the energy meter 200 calculates a net energy stored in the battery 108 based on the amount of energy inflow to the battery 108 and the amount of energy outflow from the battery 108. The net energy is calculated by subtracting (i.e., comparing) the amount of energy inflow to the battery 108 with the amount of energy outflow from the battery 108.
Net energy stored in the battery = Amount of energy inflow – Amount of energy outflow
[0034] The controller 202 can be for e.g., a processor, a hardware unit, an apparatus, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), an Electronic Control Unit (ECU) present in the vehicle, a generic control unit (which performs other functions in addition to functions as disclosed herein), a dedicated control unit, and so on. The controller 202 can determine whether the net energy calculated by the energy meter 200 exceeds a pre-defined energy threshold of the battery 108. Further, the controller 202 provides the propulsive power and the low voltage load to the power train 112 of the hybrid vehicle in motion by controlling the primary power source 104 and the secondary power source 106 when the net energy calculated by the energy meter 200 exceeds a pre-defined energy threshold of the battery 108.
[0035] The controller 202 controls the primary power source 104 by either turning off the primary power source 104 or controlling the fuel valve of the primary power source 104 to reduce fuel consumption. Further, the controller 202 controls the secondary power source 106 to provide the propulsive power to the power train 112 and the power train 112 in turn transfers the propulsive power to a propeller shaft (not shown) to provide a rotary force for rotating the wheels (not shown) of the hybrid vehicle. Further, the secondary power source 106 provides the low voltage load to other parts (e.g., indicators, head light, horn) of the hybrid vehicle which consumes low voltage, as required.
[0036] The memory 204 includes storage locations to be addressable through the controller 202. The memory 204 is not limited to a volatile memory and/or a non-volatile memory. Further, the memory 204 can include one or more computer-readable storage media. The memory 204 may include non-volatile storage elements. For example, non-volatile storage elements may include magnetic hard discs, optical discs, floppy discs, flash memories, or forms of electrically programmable memories (EPROM) or electrically erasable and programmable (EEPROM) memories. Further, the memory 204 stores the calculation of the amount of energy supplied to the battery 108, the calculation of the amount of energy drawn from the battery 108 and the calculation of the net energy stored by the battery 108.
[0037] Unlike the conventional methods and systems, the proposed method provides both the propulsive power and the low voltage loads from the secondary power source 106 for the hybrid vehicle by either switching off the primary power source 104 or controlling the fuel valve of the primary power source 104. Therefore, the hybrid vehicle runs using the secondary power source 106 and the fuel consumption is reduced.
[0038] FIG. 3 is a flow diagram 300 illustrating a method for calculating an amount of energy supplied by a secondary power source 106 to a battery 108, according to embodiments as disclosed herein. At step 302, the method includes determining whether the amount of charging of the battery 108 using regenerative braking energy is greater than a pre-defined charging amount threshold due to the braking action of the hybrid vehicle in motion. In an embodiment, the method allows the energy meter 200 to determine whether the amount of charging of the battery 108 using regenerative braking energy is greater than the pre-defined charging amount threshold due to the braking action of the hybrid vehicle in motion.
[0039] At step 304, the method includes determining whether the velocity of the hybrid vehicle in motion is greater than a pre-defined velocity threshold of the hybrid vehicle. In an embodiment, the method allows the energy meter 200 to determine whether the velocity of the hybrid vehicle in motion is greater than a pre-defined velocity threshold of the hybrid vehicle.
[0040] At step 306, the method includes checking whether the steps 302 and 304 are performed successfully and if the steps 302 and 304 are not successfully performed, then the method performs the steps 302 and 304 again. In an embodiment, the method allows the energy meter 200 to check whether the steps 302 and 304 are performed successfully and if the steps 302 and 304 are not successfully performed then the method allows the energy meter 200 to perform the steps 302 and 304 again.
[0041] At step 308, the method includes calculating the amount of energy supplied by the secondary power source 106 to the battery 108 when the method successfully performs the steps 302 and 304. In an embodiment, the method allows the energy meter 200 to calculate the amount of energy supplied by the secondary power source 106 to the battery 108 when the method allows the energy meter 200 to successfully perform the steps 302 and 304.
[0042] FIG. 4 is a flow diagram 400 illustrating the method for calculating the amount of energy dissipated by the battery 108, according to embodiments as disclosed herein. At step 402, the method includes determining whether the amount of charging of the battery 108 using regenerative braking energy is less than the pre-defined charging amount threshold during the hybrid vehicle in motion. In an embodiment, the method allows the energy meter 200 to determine whether the amount of charging of the battery 108 using regenerative braking energy is less than the pre-defined charging amount threshold during the hybrid vehicle in motion.
[0043] At step 404, the method includes determining whether the velocity of the hybrid vehicle in motion is greater than the pre-defined velocity threshold of the hybrid vehicle. In an embodiment, the method allows the energy meter 200 to determine whether the velocity of the hybrid vehicle in motion is greater than the pre-defined velocity threshold of the hybrid vehicle.
[0044] At step 406, the method includes checking whether the steps 402 and 404 are performed successfully and if the steps 402 and 404 are not successfully performed, then the method performs the steps 402 and 404 again. In an embodiment, the method allows the energy meter 200 to check whether the steps 402 and 404 are performed successfully and if the steps 402 and 404 are not successfully performed then the method allows the energy meter 200 to perform the steps 402 and 404 again.
[0045] At step 408, the method includes calculating the amount of energy dissipated by the battery 108 when the method successfully performs the steps 402 and 404. In an embodiment, the method allows the energy meter 200 to calculate the amount of energy dissipated by the battery 108 when the method allows the energy meter 200 to successfully perform the steps 402 and 404.
[0046] FIG. 5 is a flow diagram 500 illustrating a method for calculating a net energy stored by the battery 108, according to embodiments as disclosed herein. At step 502, the method includes calculating the net energy stored by the battery 108 at the regular interval of the time based on the amount of energy supplied by the secondary power source 106 to the battery 108 and the amount of energy dissipated by the battery 108. The net energy stored by the battery 108 is calculated by subtracting (i.e., comparing) the amount of energy supplied by the secondary power source to the battery 108 with the amount of energy dissipated by the battery 108.
Net energy stored by the battery = Amount of energy supplied to the battery – Amount of energy dissipated by the battery
[0047] At step 504, the method includes determining whether the net energy stored by the battery 108 exceeds the pre-defined energy threshold of the battery 108 by comparing the net energy with the pre-defined energy threshold of the battery 108. In an embodiment, the method allows the controller 202 to determine whether the net energy stored by the battery 108 exceeds the pre-defined energy threshold of the battery 108 by comparing the net energy with the pre-defined energy threshold of the battery 108.
[0048] At step 506, the method includes checking whether the step 504 is performed successfully and if the step 504 is not successfully performed, then the method performs the step 504 again. In an embodiment, the method allows the controller 202 to check whether the step 504 is performed successfully and if the step 504 is not successfully performed then the method allows the controller 202 to perform the step 504 again.
[0049] At step 508, the method includes providing the propulsive power and the low voltage load for the hybrid vehicle in motion by controlling the primary power source 104 and the secondary power source 106 based on the net energy stored by the battery 108 when the net energy stored by the battery 108 exceeds the pre-defined energy threshold of the battery 108. In an embodiment, the method allows the controller 202 to provide the propulsive power and the low voltage load for the hybrid vehicle in motion by controlling the primary power source 104 and the secondary power source 106 based on the net energy stored by the battery 108 when the net energy stored by the battery 108 exceeds the pre-defined energy threshold of the battery 108.
[0050] Unlike the conventional methods and systems, the proposed method calculates amount of energy inflow and out flow of the battery 108 and controls the primary power source 104 either by turning off the primary power source 104 or adjusting a fuel valve of the primary power source 104. Further the proposed method controls the secondary power source 106 to provide both the propulsive power and the low voltage load for the hybrid vehicle in motion. Therefore, the consumption of fuel in the hybrid vehicle in motion is reduced by utilizing the net energy stored by the battery 108.
[0051] FIG. 6 is a graph illustrating a condition for providing a propulsive power for the hybrid vehicle, according to embodiments as disclosed herein. Consider an example scenario which the pre-defined charging threshold of the battery 108 is 40 Ampere, the pre-defined velocity threshold of the hybrid vehicle is 40 kilometer/hour and the pre-defined net energy stored by the battery 108 is 40 Kilowatt. When the at least one sensor in the energy meter 200 determines that the charging of the battery 108 crosses the threshold of 40 ampere with respective to time, as shown in the graph (a), the velocity of the hybrid vehicle in motion exceeds the threshold of 40 kilometer/hour, as shown in graph (b) and the net energy exceeds the threshold of 40 Kilowatt with respective to the time, as shown in graph (c). The controller 202 controls the primary power source 104 by either switching off the primary power source 104 or adjusting the fuel valve of the primary power source 104 to prevent the fuel consumption.
[0052] Further, the controller 202 controls the secondary power source 106 to provide the propulsive power for the hybrid vehicle when the condition as explained in graph (a), (b), (c) is satisfied.
[0053] FIG. 7 is a graph illustrating a condition for providing the low voltage load for the hybrid vehicle, according to embodiments as disclosed herein. The controller 202 controls the secondary power source 106 to provide the low voltage loads to the parts of the hybrid vehicles which consumes low voltage, as required when the at least one sensor in the energy meter 200 determines that the charging of the battery 108 crosses the threshold of 40 ampere with respective to the time, as shown in the graph (a) and the net energy exceeds the threshold of 40 Kilowatt with respective to the time, as shown in graph (b).
[0054] The embodiments disclosed herein can be implemented using at least one software program running on at least one hardware device and performing network management functions to dynamically control the elements. The elements shown in FIG. 1 through 5 include blocks which can be at least one of a hardware device, or a combination of hardware device and software module.
[0055] The foregoing description of the specific embodiments will 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.
,CLAIMS:We/I claim:
1. A system (100) for managing fuel consumption in a hybrid vehicle, the system (100) comprising:
a primary power source (104);
a secondary power source (106) connected to the primary power source (104);
a battery (108) coupled to the secondary power source (106); and
a power management unit (110) connected between the primary power source (104) and the secondary power source (106), wherein the power management unit (110) comprises:
a memory (204);
an energy meter (200) configured for:
calculating an amount of energy supplied by the secondary power source (106) to the battery (108);
calculating the amount of energy dissipated by the battery (108); and
calculating a net energy stored by the battery (108) at a regular time interval by comparing the amount of energy supplied by the secondary power source (106) to the battery (108) with the amount of energy dissipated by the battery (108); and
a controller (202) configured for:
determining whether the net energy stored by the battery (108) is exceeding a pre-defined energy threshold of the battery (108) by comparing the net energy with the pre-defined energy threshold of the battery (108); and
providing a propulsive power and a low voltage load for the hybrid vehicle by controlling the primary power source (104) and the secondary power source (106) based on the net energy stored by the battery (108), wherein providing a propulsive power and a low voltage load for the hybrid vehicle when the net energy stored by the battery (108) is exceeding the pre-defined energy threshold of the battery (108) and the hybrid vehicle is in motion.
2. The system (100), as in claim 1, wherein the primary power source (104) can be at least any one of a fuel cell system and an internal combustion engine.
3. The system (100), as in claim 1, wherein the secondary power source (106) can be at least any one of a motor, a generator and a hydraulic machine.
4. The system (100), as in claim 1, wherein a regenerative braking energy generated during a braking action of the hybrid vehicle is supplied by the secondary power source (106) to the battery (108).
5. The system (100), as in claim 1, wherein energy generated from the primary power source (104) is supplied by the secondary power source (106) to the battery (108).
6. The system (100), as in claim 1, wherein the amount of energy supplied by the secondary power source (106) to the battery (108) is calculated by determining an amount of charging of the battery (108) using the regenerative braking energy is greater than a pre-defined charging amount threshold of the battery (108) due to the braking action of the hybrid vehicle in motion and a velocity of the hybrid vehicle in motion is greater than a pre-defined velocity threshold of the hybrid vehicle.
7. The system (100), as in claim 1, wherein the amount of energy dissipated by the battery (108) is calculated by determining the amount of charging of the battery (108) using the regenerative braking energy is less than the pre-defined charging amount threshold of the battery (108) during the hybrid vehicle in motion and the velocity of the hybrid vehicle in motion is greater than the pre-defined velocity threshold of the hybrid vehicle.
8. The system (100), as in claim 1, wherein comparing the amount of energy supplied by the secondary power source (106) to the battery (108) with the amount of energy dissipated by the battery (108) is subtracting the amount of energy dissipated by the battery (108) from the amount of energy supplied by the secondary power source (106) to the battery (108), or vice versa, in order to calculate the net energy stored by the battery (108).
9. A method for managing fuel consumption in a hybrid vehicle, the method comprising:
calculating, by an power management unit (110), a amount of energy supplied by a secondary power source (106) to a battery (108), the amount of energy dissipated by the battery (108) and a net energy stored by the battery (108) at a regular time interval, wherein the net energy is calculated by comparing the amount of energy supplied by a secondary power source (106) to the battery (108) with the amount of energy dissipated by the battery (108);
determining, by the power management unit (110), whether the net energy stored by the battery (108) is exceeding a pre-defined energy threshold of the battery (108) by comparing the net energy stored by the battery (108) with the pre-defined energy threshold of the battery (108); and
providing, by the power management unit (110), a propulsive power and a low voltage load for the hybrid vehicle by controlling a primary power source (104) and the secondary power source (106) based on the net energy stored by the battery (108), wherein providing a propulsive power and a low voltage load for the hybrid vehicle when the net energy stored by the battery (108) is exceeding the pre-defined energy threshold of the battery (108) and the hybrid vehicle is in motion.
10. The method, as in claim 9, wherein the primary power source (104) can be at least any one of a fuel cell system and an internal combustion engine.
11. The method, as in claim 9, wherein the secondary power source (106) can be at least any one of a motor, a generator, and a hydraulic machine.
12. The method, as in claim 9, wherein a regenerative braking energy generated during a braking action of the hybrid vehicle is supplied by the secondary power source (106) to the battery (108).
13. The method, as in claim 9, wherein energy generated from the primary power source (104) is supplied by the secondary power source (106) to the battery (108).
14. The method, as claimed in claim 9, wherein the amount of energy supplied by the secondary power source (106) to the battery (108) is calculated by determining an amount of charging of the battery (108) using the regenerative braking energy is greater than a pre-defined charging amount threshold of the battery (108) due to the braking action of the hybrid vehicle in motion and a velocity of the hybrid vehicle in motion is greater than a pre-defined velocity threshold of the hybrid vehicle.
15. The method, as claimed in claim 9, wherein the amount of energy dissipated by the battery (108) is calculated by determining the amount of charging of the battery (108) using the regenerative braking energy is less than the pre-defined charging amount threshold of the battery (108) during the hybrid vehicle in motion and the velocity of the hybrid vehicle in motion is greater than the pre-defined velocity threshold of the hybrid vehicle.
16. The method, as claimed in claim 9, wherein comparing the amount of energy supplied by the secondary power source (106) to the battery (108) with the amount of energy dissipated by the battery (108) is subtracting the amount of energy dissipated by the battery (108) from the amount of energy supplied by the secondary power source (106) to the battery (108), or vice versa, in order to calculate the net energy stored by the battery (108).