Description:FIELD OF INVENTION
[001] The field of invention generally relates to electric vehicles. More specifically, it relates to a system and method for an integrated smart battery charger and a motor controller in an electric vehicle.

BACKGROUND
[002] The field of electric vehicles (EVs) is often considered to be one of the most sustainable forms of transportation. The EVs are highly efficient than internal combustion engines. The EVs reduce the dependence of society on fossil fuels and require less maintenance.
[003] Currently, existing systems do not succeed in providing an electric vehicle controller that is compatible with different battery voltage levels which leads to difficulties in finding replacement batteries. The charging of the EV is limited to the usage of a charger of the exact voltage level. In an emergency, user is unable to charge the battery using a different voltage level charger. Hence, the user needs to carry the separate charger of the EV everywhere while driving the EV and finding the exact rating charger is difficult. In addition, existing EV controllers are not compatible with different current supply like 3-phase Alternating Current (AC) or single-phase AC, or Direct Current (DC) and are limited to particular supply. Limited availability of an exact power supply in different locations leads to difficulties in charging the electric vehicle. Further, there are no systems that utilize same components with reverse function for carrying out functionalities like charging the battery and controlling the speed of the motor.
[004] Existing systems have not been able to develop an integrated smart battery charger and a motor controller compatible with all the different voltage levels and different power supplies. Whenever attempts have been made to develop an integrated battery charger and a motor controller, their scope was limited to the addition of other components to the system that not only increases the cost of the EV but also make it heavy.
[005] Thus, in light of the above discussion, it is implied that there is a need for a system and method for integrated smart battery charger and motor controller in an electric vehicle, that is highly compatible with all different kinds of voltage levels and power supplies and does not suffer from the problems discussed above.

OBJECT OF INVENTION
[006] The principal object of this invention is to provide a system and method for an integrated smart battery charger and a motor controller in an electric vehicle (EV).
[007] A further object of the invention is to provide a system and method for the integrated smart battery charger and the motor controller compatible with different voltage levels and different power supplies.
[008] Another object of the invention is to provide a system and method for the integrated smart battery charger and the motor controller for efficient management of the power supply of the EV.
[009] Another object of the invention is to provide a system and method for the integrated smart battery charger and the motor controller for efficient management of the charging level of the battery.
[0010] Another object of the invention is to provide a system and method for the integrated smart battery charger and the motor controller for improving the overall performance of the EV.
[0011] Another object of the invention is to provide a system that utilizes same components with reverse function for carrying out functionalities like charging the battery and controlling the speed of the motor.
[0012] Another object of the invention is to avoid the user to carry an additional charger to charge the battery of the EV.
[0013] Another object of the invention is to provide a system and method for the integrated smart battery charger and the motor controller to ensure a regulated flow of electrical energy, ensure that the battery is charged, and power the motor of the EV as required.
[0014] Another object of the invention is to provide a system and method for proper utilization of the circuit components, thereby avoiding recurring use of the components in the circuit board for multi-purpose functions.
[0015] Another object of the invention is to provide improved battery management, motor control, energy storage, and battery charging using any voltage level of the power supply for the EV.

BRIEF DESCRIPTION OF FIGURES
[0016] This invention is illustrated in the accompanying drawings, throughout which, like reference letters indicate corresponding parts in the various figures.
[0017] The embodiments herein will be better understood from the following description with reference to the drawings, in which:
[0018] Figure 1 depicts a system for an integrated smart battery charger and a motor controller in an electric vehicle (EV), in accordance with an embodiment of the invention;
[0019] Figure 2 depicts the antiparallel diodes with one or more transistors, in accordance with an embodiment of the invention;
[0020] Figure 3 depicts the exemplary illustration of the system for selecting a driving mode of the motor, in accordance with an embodiment of the invention;
[0021] Figure 4 depicts the exemplary illustration of the system for selecting a driving mode of the motor, in accordance with an embodiment of the invention;
[0022] Figure 5 illustrates a method for the integrated smart battery charger and the motor controller in the EV, in accordance with an embodiment.
[0023] Figure 6 depicts the exemplary flow diagram for selecting the charging mode of the battery, in accordance with an embodiment of the invention; and
[0024] Figure 7 depicts the exemplary flow diagram for selecting the driving mode of the motor, in accordance with an embodiment of the invention.

STATEMENT OF INVENTION
[0025] The present invention discloses a system and method for an integrated smart battery charger and a motor controller in an electric vehicle (EV).
[0026] Further, the system comprises a vehicle control unit (VCU) configured to select at least one mode comprising a charging mode of a battery and a driving mode of a motor, thereby generating a signal.
[0027] Furthermore, a power unit configured to manage the battery performance and to control the motor speed upon selecting the at least one mode a converter configured to perform at least one function for a voltage of the signal received from the VCU and a bridge circuit configured to perform at least one of a rectification and a conversion for the signal voltage received from the VCU.
[0028] The proposed invention provides improved battery management, motor control, energy storage, and battery charging for the EV.

DETAILED DESCRIPTION
[0029] 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/or detailed 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.
[0030] The present invention discloses a system and method for an integrated smart battery charger and a motor controller in an electric vehicle (EV). The electric motor in the electric vehicle (EV) converts stored electrical energy from a battery into mechanical energy to power the wheels. The battery is responsible for storing and supplying the electrical energy that is used by the motor. The capacity and performance of the battery directly affect the range of the EV, while the size and power of the motor determine the vehicle’s acceleration and top speed.
[0031] In the context of the present invention, the system and method may be used for both charging operation and controlling the speed of a motor in the EV. Thus, referred to as the integrated smart battery charger and the motor controller in the EV.
[0032] Throughout this description, the system and method for the integrated smart battery charger and the motor controller in the electric vehicle have been explained with the help of an illustrative process. This embodiment should not be read as a limitation of this invention and the scope of this description covers other embodiments wherein the disclosed system and method for the integrated smart battery charger and the motor controller in the EV. Referring now to the drawings, where similar reference characters denote corresponding features consistently throughout the figures, there are shown preferred embodiments.
[0033] Figure 1 depicts a system for an integrated smart battery charger and a motor controller in an electric vehicle (EV), in accordance with an embodiment of the invention.
[0034] The system 100 for the integrated smart battery charger and the motor controller in an electric vehicle (EV) comprises a battery 102, a motor 104, a relay 106, a vehicle control unit (VCU) 108, a power unit 114 comprising a bridge circuit 110, and a converter 112.
[0035] In an embodiment, the battery 102 is configured to determine a driving range of the EV. A charge in the battery 102 determines the driving range, a distance that could be covered by the EV by the percentage of the charge present in the battery 102. The battery 102 may be a lithium iron phosphate (LFP), lithium nickel manganese cobalt oxide (NMC), and lithium nickel cobalt aluminum oxide (NCA), lithium-ion battery, lead acid battery, solid state battery, nickel-metal hydride battery, and the like. The battery 102 is electrically rechargeable and used to power the electric motor 104 of the EV.
[0036] In an embodiment, the motor 104 is configured to determine the speed of the EV by the energy received from the battery 102. The motor 104 of the EV may be a brushless direct current (BLDC) motor, permanent magnet synchronous motor (PMSM), or an alternate current (AC) motor. The motor 104 drives the EV’s wheels by using the power/ energy received from the battery 102.
[0037] In an embodiment, the relay 106 is configured to switch to an OFF condition when the charging mode of the EV is selected, and the relay 106 is configured to switch to an ON condition when the driving mode of the EV is selected.
[0038] In an embodiment, the vehicle control unit (VCU) 108 comprises an input supply, a controller, a relay signal, an encoder, a power management circuit and the like. The VCU 108 may comprise other components that aid in performing the selected at least one of a mode. The at least one mode comprises a charging mode and a driving mode. The input supply may be at least one of an alternating current (AC) signal, or a direct current (DC) signal configured to apply an input to the vehicle control unit (VCU) 108. The AC signal comprises at least one of a single-phase AC signal or a three phase AC signal. The controller comprises one or more gate signals configured to control at least one or more transistors in the converter 112 and the bridge circuit 110. The controller comprises a processor and a memory to store and execute the instructions. The controller may be any microcontroller or other integrated circuits. Further, the relay signal is configured to switch to the ON condition and the OFF condition based on the at least one of the selected modes of the EV. The relay 106 is controlled by the relay signal configured inside the VCU 108. The encoder is configured to track the rotational speed of the motor 104. The power management circuit is configured to provide low power to the VCU from main power supply.
[0039] In an embodiment, the VCU 108 is configured to select the at least one mode comprising the charging mode or the driving mode as per the requirement. The controller in the VCU 108 comprises the processor and the memory to store and execute the instructions to perform at least one of the functionalities/ operations to be performed by the components present in the power unit 114. The VCU 108 generates a pulse width modulation (PWM) signal. Herein the PWM signal may also be referred to as gate signal. The PWM signal maybe Sinusoidal Pulse Width Modulation (SPWM) or Space Vector Pulse Width Modulation (SVPWM), depending upon the control technique. The VCU 108 generates the PWM signal for transistors of the bridge circuit 110 to control the speed of the motor 104. In an embodiment, the speed of the motor 104 is controlled by varying the duty cycle of the PWM signal from 0 to 100%. The EV has no movement when the duty cycle is at 0 (zero) and the EV has maximum speed when the duty cycle is at 100%. The person skilled in the art may consider the duty cycle as the period of time for one operating cycle for equipment which cycles periodically at a regular rate.
[0040] In an embodiment, the power unit 114 is configured to manage the battery 102 performance and to control the motor speed upon selecting the at least one mode. The power unit 114 comprises a bridge circuit 110 and a converter 112. The power unit 114 functions as a motor controller or as a battery charger.
[0041] In an embodiment, a converter 112 configured to perform at least one function for a voltage of the signal received from the VCU 108. In an embodiment, the converter is a bi-directional converter. The bi-directional converter 112 in the power unit 114 is used as the battery charger and the motor speed controller in the EV. The at least one function of the converter 112 comprises a step-up operation and a step-down operation for the voltage of the signal received from the VCU 108. The VCU 108 collects all the node voltages for proper functioning of the bi-directional converter 112. The converter 112 comprises at least one of a buck-boost converter 112 or a dc-dc converter 112. In an embodiment, the buck boost converter 112 may be used to manage the battery voltage and control the speed of the motor 104. The bi-directional buck boost converter 112 provides a wide range of voltage by varying the duty cycle of the PWM signal generated from the VCU 108. Therefore, a minimum and a maximum voltage can vary below a level and above a level of the battery voltage respectively. Thereby, resulting in minimizing and maximizing the speed of the EV. Hence, the entire system provides double control of speed when required.
[0042] In an embodiment, the bridge circuit 110 is configured to perform at least one of a rectification and a conversion for the signal voltage received from the VCU 108. In an embodiment, the conversion may also be considered as inversion.
[0043] In an embodiment, if three phase alternate current (AC) supply is connected to VCU 108 for charging, then the bridge circuit 110 acts as a rectifier and the current will pass through antiparallel diodes (D1-D6) of one or more transistors (Q1-Q6). The antiparallel diodes (D1-D6) of the three legs of the bridge will participate automatically to rectify the AC supply into direct current (DC) signal.
[0044] In an embodiment, if single phase AC or three-phase AC is connected to VCU 108 for charging, then the bridge circuit 110 acts as rectifier and the current will pass through the antiparallel diodes of the one or more transistors. However, the antiparallel diodes (D1-D4) of two legs of the bridge will participate automatically which are connected to the respective phase, to rectify the AC supply into direct current (DC) signal. In an embodiment, the supply of AC/ DC current can be given to any of the terminals (R, Y, B) for charging the battery.
[0045] In an embodiment, if DC supply is connected to VCU 108 for charging, then any antiparallel diodes (D1-D6) of any two legs of the bridge will participate. Herein, one diode may be used for the positive side and another diode is used for the negative side of the signal.
[0046] For example, when EV is in a rest position and the ignition key is turned off, then the charging mode of the battery 102 is selected. Further, if external supply is connected to R, Y, B terminal of VCU 108, then VCU 108 will send a signal to relay 106 to switch to the OFF condition. Further, the battery 102 voltage and a node-V voltage are compared with each other. If battery voltage is more than the node-V voltage, then VCU 108 will generate PWM gate pulses with a duty cycle of more than 50%, and if battery voltage is less than the node-V voltage then VCU 108 will generate PWM gate pulses with the duty cycle of less than 50% This operation is performed by operating switches Q7 and Q8, thereby controlling the at least one or more transistors of the converter 112. Thus, the output from the Q7 and Q8 transistors is further used to increase the charge in the battery. Therefore, any voltage level from the external input supply can be leveled to battery 102 voltage by changing the duty cycle using the proposed system.
[0047] In an embodiment, when the charging mode of the battery 102 is selected. Firstly, the relay 106 configured to switch to the OFF condition by switching the relay signal of the vehicle control unit (VCU) 108. In an embodiment, the electric vehicle (EV) charging port with a lock may be designed that can only be opened with the same ignition key. This could be done to prevent unauthorized/accidental access to the charging port, and to avoid potential fault conditions. The design may include a mechanical lock that is controlled by the same electronic system that manages the ignition key. This system would verify that the key being used matches the one that is authorized to unlock the charging port. If the key is accepted, the lock would disengage and allow the user to plug in the charger. However, if the wrong key is used, the lock would not disengage, and the charging port would remain locked. This would prevent any electrical current from flowing into the vehicle's motor and avoid any potential fault conditions. Overall, implementing a charging port lock controlled by the ignition key could help to ensure safe and reliable charging for electric vehicles.
[0048] Furthermore, the bridge circuit 110 configured to rectify the output signal voltage received from the vehicle control unit VCU 108 by comparing the voltage of the output signal received from the VCU 108 with the voltage in the battery 102, thereby generating an output signal voltage. Furthermore, the converter 112 configured to perform at least one of the function on the output signal voltage received from the bridge circuit by comparing the output voltage received from the bridge circuit 110 with the voltage in the battery 102, thereby generating a desired output signal voltage to charge the battery 102. Thereafter, the battery 102 configured to determine the battery 102 performance by getting charged by the output signal voltage of the converter 112.
[0049] In an embodiment, when the driving mode of the motor 104 is selected. Firstly, the relay 106 configured to select the vehicle control unit (VCU) 108 for driving mode by switching the relay signal to the ON condition. Further, the VCU 108 configured to generate the one or more gate signals to control the at least one or more transistors (Q1-Q8) of the converter 112 and the bridge circuit 110 to control the speed of the motor 104 switching the relay signal to the ON condition. Furthermore, the converter 112 configured to perform at least one function of a battery voltage by comparing the battery voltage with a required motor voltage to control the speed of the motor 104, thereby generating the output signal voltage. Furthermore, the bridge circuit 110 configured to convert the output signal voltage of the converter 112 to a desired motor speed by controlling the one or more gate signals of the VCU, thereby generating the output voltage to control the motor speed. Thereafter, the motor configured to obtain the output voltage of the bridge circuit 110 to control the motor speed.
[0050] Figure 2 depicts the antiparallel diodes with the one or more transistors, in accordance with an embodiment of the invention. The antiparallel diodes (D1-D8) with the one or more transistors (Q1-Q8) are controlled by the one or more gate signals generated by the vehicle control unit (VCU).
[0051] Figure 3 depicts the exemplary illustration of the system for selecting the charging mode of the battery 102, in accordance with an embodiment of the invention. In the exemplary embodiment, consider, an electric car’s battery 102 needs to be charged. Let the capacity of the electric car’s battery 102 is of 48V. Firstly, the electric car is connected to a plug socket comprising the supply of 110V, 3-phase alternate current (AC) supply. The plug socket is internally connected to the VCU 108 of the electrical car using any of the terminals (R, Y, B). The 110Vrms= 155.54Vm AC signa1 of the plug socket is applied to the R, Y, B terminal of the VCU 108. The VCU 108 enables the relay 106 signal to switch to OFF condition, thereby turning the relay 106 to OFF mode. Further, the input supply/ signal supplied for charging the battery 102 is passed onto the bridge circuit 110. The bridge circuit 110 with the help of one or more transistors (Q1-Q6) acts as the rectifier and performs rectification to convert the AC signal to the DC signal (VDC =3√3Vm ÷ 𝜋 = 257.26V). Therefore, the output signal voltage of the bridge circuit 110 is VDC = 257.26V. Further, the output signal voltage of the bridge circuit 110 is passed onto the converter 112. The converter 112 will step down the received voltage from 257V to 56V to charge the battery 102 of 48V. Thus, the efficient charging of the battery 102 is achieved.
[0052] Figure 4 depicts the exemplary illustration of the system for selecting the driving mode of the motor 104, in accordance with an embodiment of the invention. In the exemplary embodiment, consider, the electric car’s motor speed needs to be controlled. The speed of the electric car is controlled through discharging of the battery 102. Consider, the voltage of electric car’s battery 102 is 48V. Firstly, the VCU 108 enables the relay signal to switch to the ON condition, thereby turning the relay 106 to the ON mode. The voltage of the battery 102 is increased from 48V to 100V using the step-up operation of the converter 112. Further, the voltage is again chopped using the one or more transistors (Q1-Q6) of the bridge circuit 110. The one or more transistors are controlled by varying the one or more gate signals of the VCU 108 to get the variable motor speed. Thus, the electric car gets a wide range of speed.
[0053] Figure 5 illustrates a method 500 for integrated smart battery charger and motor controller in the EV, in accordance with an embodiment. The method begins with selecting at least one mode comprising a charging mode of a battery and a driving mode of a motor by a vehicle control unit (VCU) 108, thereby generating a signal, as depicted at step 502. Thereafter, the method 500 discloses managing the battery performance and to control the motor speed upon selecting the at least one mode, by a power unit 114. Furthermore, performing at least one function for a voltage of the signal received from the VCU 108, by a converter 112 and performing at least one of a rectification and a conversion for the signal voltage received from the VCU 108, as depicted in step 504.
[0054] Figure 6 depicts the exemplary flow diagram 600 for selecting a charging mode of the battery 102, in accordance with an embodiment of the invention. The selecting of the charging mode of the battery 102 begins with configuring the relay 106 to switch to the OFF condition by switching the relay signal of the vehicle control unit (VCU) 108, as depicted in step 602. Further, configuring the input signal to apply an input to the vehicle control unit (VCU) 108 to charge the battery 102 upon switching the relay 106 to the OFF condition, thereby generating an output signal of the VCU 108, as depicted in step 604. Furthermore, configuring the bridge circuit 110 to rectify the output voltage of the signal received from the vehicle control unit (VCU) 108 by comparing the output voltage received from the VCU 108 with the voltage in the battery 102, thereby generating an output voltage, as depicted in step 606. Furthermore, configuring the converter 112 to perform at least one of the function of the output voltage received from the bridge circuit by comparing the output voltage received from the bridge circuit 110 with the voltage in the battery 102, thereby generating a desired output signal voltage to charge the battery 102, as depicted in step 608. Thereafter, configuring the battery 102 to determine the battery performance by getting charged by the output signal voltage of the converter 112, as depicted in step 610.
[0055] Figure 7 depicts the exemplary flow diagram 700 for selecting driving mode of the motor 104, in accordance with an embodiment of the invention. The selection of the driving mode of the motor 104 begins with configuring the relay 106 to select the vehicle control unit (VCU) 108 for driving mode by switching the relay signal to the ON condition, as depicted in step 702. Further, configuring the VCU to generate the one or more gate signals to control the at least one or more transistors (Q1-Q8) of the converter 112 and the bridge circuit 110 to control the speed of the motor 104 upon switching the relay signal to the ON condition, as depicted in step 704. Furthermore, configuring the converter 112 to perform at least one function of a battery voltage by comparing the battery voltage with the required motor voltage to control the speed of the motor 104, thereby generating the output signal voltage, as depicted in step 706. Furthermore, configuring the bridge circuit 110 to convert the output signal voltage of the converter 112 to a desired motor speed by controlling the one or more gate signals of the VCU, thereby generating the output voltage to control the motor speed, as depicted in step 708. Thereafter, configuring the motor 104 to obtain the output voltage of the bridge circuit 110 to control the motor speed, as depicted in step 710.
[0056] The advantages of the current invention include the system and method for integrated smart battery charger and motor controller is compatible for different voltage levels and different power supplies.
[0057] An additional advantage is that by the battery of the EV can be charged by using any charger with different voltage level.
[0058] An additional advantage is that by the current invention efficient management of charging level of the battery is provided.
[0059] An additional advantage is that by the current invention efficient management of the speed of the motor is achieved.
[0060] An additional advantage is that the battery of the EV can charge the battery with available AC-single phase supply, AC-three phases supply and DC supply irrespective of the frequency and phase.
[0061] An additional advantage is that any voltage level of the power level can be utilized for charging the battery. If the system comprises AC signal, then the system supports voltage up to 300Vrms and for DC signal the system supports wide range of voltage to charge the battery of particular voltage level.
[0062] An additional advantage is that by the current invention avoids the dangers caused due to wrong connection of input supply. The design of the current system any wire and supply can be connected to any terminal irrespective of DC polarity and AC phase sequence.
[0063] An additional advantage is that by the current invention the circuit components are properly utilized thereby recurring use of the components in the circuit board for multi-purpose function is avoided.
[0064] An additional advantage is that the current invention provides improved battery management, motor control, energy storage and any voltage battery charging for the EV.
[0065] Applications of the current invention include electric cars, electric buses and all other electric automobiles.
[0066] 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 scope of the embodiments as described here. , Claims:We claim:
1. A system (100) for an integrated smart battery charger and a motor controller in an electric vehicle (EV), comprising:
a vehicle control unit (VCU) (108) configured to select at least one mode comprising a charging mode of a battery (102) and a driving mode of a motor (104), thereby generating a signal; and
a power unit (114) configured to manage the battery performance and to control the motor speed upon selecting the at least one mode comprising:
a converter (112) configured to perform at least one function for a voltage of the signal received from the VCU (108); and
a bridge circuit (110) configured to perform at least one of a rectification and a conversion for the signal voltage received from the VCU (108).
2. The system (100) as claimed in claim 1, wherein to perform the at least one function of the converter (112) comprising a step-up operation and a step-down operation of the voltage of the signal received from the VCU (108).

3. The system (100) as claimed in claim 1, wherein the relay (106) is configured to switch to an OFF condition when the charging mode of the EV is selected, and the relay (106) is configured to switch to an ON condition when the driving mode of the EV is selected.

4. The system (100) as claimed in claim 1, wherein the converter (112) comprises at least one of a buck-boost converter (112) and a dc-dc converter (112).

5. The system (100) as claimed in claim 1, wherein the vehicle control unit (112) comprising:
an input supply comprising at least one of an alternating current (AC) signal, a direct current (DC) signal configured to apply an input to the vehicle control unit (VCU) (108), wherein the AC signal comprises at least one of a single-phase AC signal and a three phase AC signal, wherein the input supply is fed to any terminal of the VCU (108), and input supply is of any voltage level;
a controller comprising one or more gate signals configured to control at least one or more transistors (Q1-Q8) in the converter (112) and the bridge circuit (110), wherein the controller comprises a processor and a memory to store and execute the instructions;
a relay signal configured to switch to the ON condition and the OFF condition based on the selected mode of the EV; and
an encoder configured to track the rotational speed of the motor (104).
6. The system (100) as claimed in claim 1, wherein selecting the charging mode of the battery (102) comprises:
the relay (106) configured to switch to the OFF condition by switching the relay signal of the vehicle control unit (VCU) (108);
the input signal configured to apply an input to the vehicle control unit (VCU) (108) to charge the battery (102) upon switching the relay (106) to the OFF condition, thereby generating an output signal of the VCU (108);
the bridge circuit (110) configured to rectify the output signal voltage received from the vehicle control unit (VCU) (108) by comparing the voltage of the output signal received from the VCU (108) with the voltage in the battery (102), thereby generating an output signal voltage;
the converter (112) configured to perform at least one of the function on the output signal voltage received from the bridge circuit by comparing the output voltage received from the bridge circuit (110) with the voltage in the battery (102), thereby generating a desired output signal voltage to charge the battery (102); and
the battery (102) configured to determine the battery (102) performance by getting charged by the output signal voltage of the converter (112).
7. The system (100) as claimed in claim 1, wherein selecting the driving mode of the motor (104) comprises:
the relay (106) configured to select the vehicle control unit (VCU) (108) for driving mode by switching the relay signal to the ON condition;
the VCU (108) configured to generate the one or more gate signals to control the at least one or more transistors (Q1-Q8) of the converter (112) and the bridge circuit (110) to control the speed of the motor (104) switching the relay signal to the ON condition;
the converter (112) configured to perform at least one function of a battery voltage by comparing the battery voltage with a required motor voltage to control the speed of the motor (104), thereby generating the output signal voltage;
the bridge circuit (110) configured to convert the output signal voltage of the converter (112) to a desired motor speed by controlling the one or more gate signals of the VCU, thereby generating the output voltage to control the motor speed; and
the motor configured to obtain the output voltage of the bridge circuit (110) to control the motor speed.

8. The system (100) as claimed in claim 1, wherein one or more signals generated by the vehicle control unit (VCU) (108) comprises pulse width modulation (PWM) signals.

9. A method (600) for integrated smart battery charger and motor controller in an electric vehicle (EV), comprising:
selecting, by a vehicle control unit (VCU) (108), at least one mode comprising a charging mode of a battery (102) and a driving mode of a motor (104), thereby generating a signal; and
managing, by a power unit (114), the battery performance and to control the motor speed upon selecting the at least one mode comprising:
performing, by a converter (112), at least one function for a voltage of the signal received from the VCU (108); and
performing, by a bridge circuit (110), at least one of a rectification and a conversion for the signal voltage received from the VCU (108).
10. The method (600) as claimed in claim 9, comprising configuring the converter (112) to perform at least one function comprising a step-up operation and a step-down operation of the voltage of the signal received from the VCU (108).

11. The method (600) as claimed in claim 9, comprising configuring a relay (106) to switch to an OFF condition when the charging mode of the EV is selected, and switching to an ON condition when the driving mode of the EV is selected.

12. The method (600) as claimed in claim 9, comprising configuring the vehicle control unit (108) comprising:
configuring an input supply comprising at least one of an alternating current (AC) signal, a direct current (DC) signal to apply an input to the vehicle control unit (VCU) (108), wherein the AC signal comprises at least one of a single-phase AC signal and a three phase AC signal, wherein the input supply is fed to any terminal of the VCU (108), and input supply is of any voltage level;
configuring a controller comprising one or more gate signals to control at least one or more transistors (Q1-Q8) in the converter (112) and the bridge circuit (110), wherein the controller comprises a processor and a memory to store and execute the instructions;
configuring a relay signal to switch to the ON condition and the OFF condition based on the selected mode of the EV; and
configuring an encoder to track the rotational speed of the motor (104).
13. The method (600) as claimed in claim 9, comprising selecting the charging mode of the battery (102) comprises:
configuring the relay (106) to switch to the OFF condition by switching the relay signal of the vehicle control unit (VCU) (108);
configuring the input signal to apply an input to the vehicle control unit (VCU) (108) to charge the battery (102) upon switching the relay (106) to the OFF condition, thereby generating an output signal of the VCU (108);
configuring the bridge circuit (110) to rectify the output voltage of the signal received from the vehicle control unit (VCU) (108) by comparing the output signal voltage received from the VCU (108) with the voltage in the battery (102), thereby generating an output signal voltage;
configuring the converter (112) to perform at least one of the function of the output signal voltage received from the bridge circuit by comparing the output signal voltage received from the bridge circuit (110) with the voltage in the battery (102), thereby generating a desired output signal voltage to charge the battery (102); and
configuring the battery (102) to determine the battery performance by getting charged by the output signal voltage of the converter (112).
14. The method (600) as claimed in claim 9, comprising selecting the driving mode of the motor (104) comprises:
configuring the relay (106) to select the vehicle control unit (VCU) (108) for driving mode by switching the relay signal to the ON condition;
configuring the VCU to generate the one or more gate signals to control the at least one or more transistors (Q1-Q8) of the converter (112) and the bridge circuit (110) to control the speed of the motor (104) upon switching the relay signal to the ON condition;
configuring the converter (112) to perform at least one function of a battery voltage by comparing the battery voltage with the required motor voltage to control the speed of the motor (104), thereby generating the output signal voltage;
configuring the bridge circuit (110) to convert the output signal voltage of the converter (112) to a desired motor speed by controlling the one or more gate signals of the VCU, thereby generating the output voltage to control the motor speed; and
configuring the motor (104) to obtain the output voltage of the bridge circuit (110) to control the motor speed.

15. The method (600) as claimed in claim 9, comprising generating one or more signals by the vehicle control unit (VCU) (108) comprises pulse width modulation (PWM) signals.