Description:FORM 2 THE PATENTS ACT, 1970 (39 of 1970) & THE PATENT RULES, 2003 COMPLETE SPECIFICATION (See Section 10 and Rule 13) Title of invention: AN ENERGY-REFILLING APPARATUS Applicant: River Mobility Private Limited A company based in India, Having address as: No. 25/3, KIADB EPIP Zone, Seetharampalya, Hoodi Road, Mahadevapura, Whitefield, Bengaluru - 560048 The following specification describes the invention and the manner in which it is to be performed. PRIORITY INFORMATION [001] The present application does not claim a priority from any other application. TECHNICAL FIELD [002] The present subject matter described herein, in general, relates to electric vehicles. Particularly, the invention describes an energy-refilling apparatus for charging electric vehicles. BACKGROUND [003] In general, a battery of an electric vehicle is charged using a charging gun. A charging gun includes a plurality of terminals to connect to a vehicle inlet for transferring power via an external power supply. The terminals on the charging gun are also utilized for establishing communication between the charging gun and other vehicle components via a CAN bus. The commercially available charging guns are designed to be used specifically either for four-wheeler automobiles or two-wheeler automobiles. Conventionally, the charging guns have provisions to support Direct Current (DC) charging alone or a combination of DC and Alternating Current (AC) charging. In the case of charging guns that support both AC and DC charging, separate connectors are provided for AC charging and DC charging. In some charging connectors, separate charging terminals are provided for AC and DC charging. Some charging connectors have common connectors for DC and AC charging. Existing charging connectors are provided with multiple communication terminals according to their requirement for communicating with the electric vehicle. In some cases, additional terminals are provided in the charging gun to support universal charging standards for the electric vehicles. Consequently, the complexity and cost increases for the charging gun that supports more than one type of charging. Also, it has been observed that the charging guns supporting more than one type of charging are prone to hazardous incidents. Therefore, there is a need for simple, safe, and cost-effective charging guns that can be used for the charging of electric vehicles. SUMMARY [004] Before the present system(s) and method(s) are described, it is to be understood that this application is not limited to the particular system(s), and methodologies described, as there can be multiple possible embodiments which are not expressly illustrated in the present disclosures. It is also to be understood that the terminology used in the description is for the purpose of describing the particular implementations or versions or embodiments only and is not intended to limit the scope of the present application. This summary is provided to introduce aspects related to an energy refiling apparatus for charging an electric vehicle. This summary is not intended to identify essential features of the claimed subject matter nor is it intended for use in determining or limiting the scope of the claimed subject matter. [005] According to an embodiment, the present invention provides an energy-refilling apparatus for charging electric vehicles. The energy-refilling apparatus comprises a housing. Further, the housing comprises a plurality of terminals that is configured with different lengths to establish a plurality of connections with an electric vehicle inlet in a sequential manner. The plurality of terminals comprises an earth terminal, a set of communication terminals, a set of power terminals, and a set of proximity terminals. Upon insertion of the energy-refilling apparatus into the electric vehicle inlet, the earth terminal of length L1 of the energy refilling apparatus gets connected to the earth terminal of the electric vehicle inlet (i.e., socket) first. The set of communication terminals of length L2 is connected to the electric vehicle inlet after the connection between the electric vehicle inlet and the earth terminal is established. It is to be noted that the length of the communication terminals i.e., L2 is lesser than the length of the earth terminals i.e., L1. The set of power terminals of length L3 is connected to the electric vehicle inlet, after the connection between the electric vehicle inlet and the set of communication terminals is established. The length of the power terminals i.e., L3 is lesser than the length of the communication terminals i.e., L2. Subsequently, the set of proximity terminals of length L4 is connected to the electric vehicle inlet. It may be noted that the length L4 of the proximity terminals is lesser than length L3 of the power terminals. It is to be noted that the plurality of terminals of the housing may be implemented either as male connectors or female connectors. [006] According to another embodiment, the present invention provides an electric vehicle inlet comprising a casing. Further, the casing comprises a plurality of terminals configured with different lengths to establish a plurality of connections with an energy refilling apparatus in a sequential manner. The plurality of terminals comprises an earth terminal, a set of communication terminals, a set of power terminals, and a set of proximity terminals. Upon insertion of the energy refilling apparatus into the electric vehicle inlet, the earth terminal of length L1 of the energy refilling apparatus gets connected to the earth terminal of the vehicle inlet first. Subsequently, a set of communication terminals of length L2 of the energy refilling apparatus is connected to the communication terminals of the vehicle inlet. The length L2 of the communication terminals is smaller than the length L1 of the earth terminals of the energy refilling apparatus. Consequently, a set of power terminals of length L3 of the energy refilling apparatus is connected to the power terminals of the vehicle inlet. The length L3 of the power terminals is smaller than the length L2 of the communication terminals of the energy refilling apparatus. Finally, the set of proximity terminals of length L4 of the energy refilling apparatus is connected to the proximity terminals of the vehicle inlet. The length L4 of the proximity terminals is smaller than the length L3 of the power terminals of the energy refilling apparatus. The plurality of terminals of the energy refilling apparatus and the vehicle inlet may be implemented either as a male connector or as a female connector. [007] According to another embodiment, the present invention provides an energy-refilling system for charging electric-vehicles. The energy-refilling system comprises an energy refilling apparatus. The energy refilling apparatus comprises a housing having a plurality of terminals for transferring power from an external power supply to an electric vehicle via an electric vehicle inlet. The electric vehicle inlet connects with the plurality of terminals of the housing to transfer the power from the external power supply to the electric vehicle. The plurality of terminals are of different lengths to establish a plurality of connections with an electric vehicle inlet in a sequential manner. The plurality of terminals comprises an earth terminal, a set of communication terminals, a set of power terminals, and a set of proximity terminals. [008] The earth terminal of the energy refilling apparatus of length L1 is configured to connect with the electric vehicle inlet for discharging any residue current. Subsequently, a set of communication terminals of the energy refilling apparatus of length L2 is configured to connect with the electric vehicle inlet for enabling communication with external power supply and a vehicle control unit (VCU) of the electric vehicle. The length L2 of the communication terminals of the energy refilling apparatus is lesser than the length L1 of the earth terminal of the energy refilling apparatus. A set of power terminals of the energy refilling apparatus of length L3 is configured to connect with the vehicle inlet to establish a connection with a battery of the electric vehicle. The length L3 of the power terminals of the energy refilling apparatus is lesser than the length L2 of the communication terminals of the energy refilling apparatus. A set of proximity terminals of length L4 of the energy refilling apparatus is configured to connect with the electric vehicle inlet to initiate charging of the battery. The length L4 of the proximity terminals of the energy refilling apparatus is lesser than the length L3 of the power terminals of the energy refilling apparatus The set of power terminals is configured to enable transmission of power from the external power supply to the battery via the electric vehicle inlet after detecting that the set of proximity terminals is connected to the electric vehicle inlet. [009] According to another embodiment, the present invention provides a method for energy refilling of an electric vehicle. Initially, a plurality of terminals, of the energy refilling apparatus, is connected with a vehicle inlet in a sequential manner. The plurality of terminals comprises an earth terminal, a set of communication terminals, a set of power terminals, and a set of proximity terminals. The plurality of terminals of the energy refilling apparatus are configured to have different lengths. The plurality of terminals are provided in a housing for transferring power from an external power supply to the electric vehicle via an electric vehicle inlet. Upon insertion of the energy refilling apparatus into the electric vehicle inlet, the earth terminal of length L1 gets connected first to the electric vehicle inlet for discharging any residue current. [010] Subsequently, the set of communication terminals of length L2 is connected with the electric vehicle inlet. It should be noted that the length L2 is lesser than the length L1. Consequently, the set of power terminals of length L3 is connected with the electric vehicle inlet to further establish a connection with a battery of the electric vehicle. It should be noted that the length L3 is lesser than the length L2. Further, the set of proximity terminals of length L4 is connected with the electric vehicle inlet to initiate charging of the battery. It should be noted that the length L4 is lesser than length L3. Furthermore, the set of power terminals is configured to enable transmission of power from the external power supply to the battery via the electric vehicle inlet, after detecting that the set of proximity terminals is connected to the electric vehicle inlet. [011] These and other aspects of the embodiments herein will be better appreciated and understood when considered in conjunction with the following description and the accompanying drawings. It should be understood, however, that the following descriptions, while indicating preferred embodiments and numerous specific details thereof, are given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the embodiments herein without departing from the essence thereof, and the embodiments herein include all such modifications. BRIEF DESCRIPTION OF THE DRAWINGS [012] The foregoing detailed description of embodiments is better understood when read in conjunction with the appended drawings. For the purpose of illustrating the present subject matter, an example of construction of the present subject matter is provided as figures, however, the invention is not limited to the specific apparatus for charging an electric vehicle as disclosed in the document and the figures. [013] The present subject matter is described in detail with reference to the accompanying figures. In the figures, the leftmost digit(s) of a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the drawings to refer to various features of the present subject matter. [014] Figure 1a illustrates an exemplary model of an energy-refilling apparatus for charging an electric vehicle, in accordance with an embodiment of the present subject matter [015] Figure 1b illustrates a schematic diagram of an energy-refilling apparatus for charging an electric vehicle, in accordance with an embodiment of the present subject matter. [016] Figure 2 illustrates a schematic diagram of an electric vehicle inlet for charging an electric vehicle, in accordance with an embodiment of the present subject matter. [017] Figure 3 illustrates an energy-refilling system for charging an electric vehicle, in accordance with an embodiment of the present subject matter. [018] Figure 4 illustrates an exemplary connection arrangement for charging cycle of the electric vehicle, in accordance with an embodiment of the present subject matter. [019] Figure 5 illustrates an exemplary connection arrangement between the external power supply and the energy refiling apparatus, in accordance with an embodiment of the present subject matter. [020] Figure 6 illustrates an exemplary connection arrangement between the Residual Current Circuit Breaker (RCCB) and the energy refiling apparatus in accordance with an embodiment of the present subject matter. [021] Figure 7 illustrates a method for energy refilling of an electric vehicle, in accordance with an embodiment of the present subject matter. [022] The figures depict an embodiment of the present disclosure for purposes of illustration only. One skilled in the art will readily recognize from the following discussion that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein. DETAILED DESCRIPTION [023] The embodiments herein and the various features and advantageous details thereof are explained more fully with reference to the non-limiting embodiments 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. 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. [024] Some embodiments of this disclosure, illustrating all its features, will now be discussed in detail. The words “retaining”, “connecting”, “charging”, “latching”, “transmitting”, "enabling”, "establishing", “attaching” and other forms thereof, are intended to be open ended in that an item or items following any one of these words is not meant to be an exhaustive listing of such item or items or meant to be limited to only the listed item or items. It must also be noted that as used herein and in the appended claims, the singular forms "a," "an," and "the" include plural references unless the context clearly dictates otherwise. The terms “comprises,” “comprising,” “has,” “having,” “includes” and/or “including” as used herein, specify the presence of stated features, elements, and/or components and the like, but do not preclude the presence or addition of one or more other features, elements, components and/or combinations thereof. The term “an embodiment” is to be read as “at least one embodiment.” The term “another embodiment” is to be read as “at least one other embodiment.” Although any system and methods similar or equivalent to those described herein can be used in the practice or testing of embodiments of the present disclosure, the exemplary system and methods are now described. [025] The disclosed embodiments are merely examples of the disclosure, which may be embodied in various forms. Various modifications to the embodiment will be readily apparent to those skilled in the art and the generic principles herein may be applied to other embodiments. However, one of ordinary skill in the art will readily recognize that the present disclosure is not intended to be limited to the embodiments described but is to be accorded the widest scope consistent with the principles and features described herein. [026] As mentioned above, there is a need for simple, safe, and cost-effective charging guns that can be used for the electric vehicles with one or more wheels. The embodiments herein achieve this by providing an energy-refilling apparatus, system, and method for charging electric vehicles. Referring now to the drawings, and more particularly to FIGS. 1 through 7, where similar reference characters denote corresponding features consistently throughout the figures, there are shown preferred embodiments. [027] It may be noted that the terms such as terminals, pins, connectors, and receptacles may be referred as synonyms to each other and are represented as well understood concepts or the conventional terminologies used in the present art of the subject matter. It may further be noted that the interchangeable use of the terms does not limit the scope of the present invention in any way. In one embodiment, the term “terminals” refers to pins that are used to establish a plurality of connections with either the energy refilling apparatus or the electric vehicle inlet, when the pins act as a male connector. In another embodiment, the term “terminals” refers to connector pins that are the receiving terminals of either the energy refilling apparatus or electric vehicle inlet that act as a female connector. In yet another embodiment, the terms ‘set of communication terminals’, ‘set of charging terminals’, and ‘set of proximity terminals’ refers to one or more corresponding terminals. [028] The term “energy-refilling apparatus” refers to a “charging gun” or a “charging connector” for charging an electric vehicle using the external power supply/charger. Specifically, the energy-refilling apparatus includes a plug at one end that connects the external power supply or a charger. The energy refilling apparatus includes plurality of terminals at the other end to connect with the electric vehicle inlet terminals for transferring power safely to a battery of the electric vehicle. It may be noted that the energy-refilling apparatus may be implemented either as a female or as male connector. [029] The term “electric vehicle inlet” refers to a power inlet or socket provided in the electric vehicle for receiving power from the external power supply via the energy refilling apparatus or a charging gun. It may be noted that electric vehicle inlet may be implemented either as a male connector or as a female connector for receiving the power. [030] The term “Vehicle Control Unit (VCU)” refers to a master controller configured for monitoring and regulating the charging operations of the electric vehicle via the electric vehicle inlet. The electric vehicle of the present subject matter may include but is not limited to, hybrid vehicles, plug-in hybrid vehicles, battery-driven or electric motor-assisted vehicles, and the like. [031] The term ‘operation’ or ‘charging operation’ or ‘charging process’ refers to the activation of charging of the battery of an electric vehicle. That is, one end of the energy-refilling apparatus is connected to the electric vehicle via the electric vehicle inlet and another end of the energy-refilling apparatus is connected to a charging station or an external power supply. Subsequently, the charging station or the external power supply is triggered to transfer AC or DC power to the electric vehicle. [032] The term ‘external power supply’ refers to a charging station or charger that can supply either Direct Current (DC) supply or Alternating Current (AC) supply. [033] The present subject matter discloses an energy-refilling apparatus and system for charging an electric vehicle. The energy-refilling apparatus comprises a housing with a plurality of terminals. The plurality of terminals are configured with different lengths to establish a plurality of connections with an electric vehicle inlet or a socket in a sequential manner. The sequential connection of the plurality of terminals of the energy refilling apparatus is achieved by establishing the connection in a order of decreasing length of terminals. Initially, the terminal that has the longest terminal length is connected with the electric vehicle inlet, and then the next terminal with a lesser length compared to the longest length is connected. Likewise, further connections are established with the electric vehicle inlet in the order of decreasing length of the terminals. The plurality of terminals comprises an earth terminal, a set of communication terminals, a set of power terminals, and a set of proximity terminals. While connecting the energy refilling apparatus or the charging gun with the vehicle inlet, the earth terminal with the longest length is connected first to the electric vehicle inlet. Subsequently, rest of the of terminals are connected in a decreasing order of length of the terminals. [034] Each of the plurality of terminals is configured with specific functionality to charge a battery of the electric vehicle in a safe manner. Firstly, the earth terminal is configured to discharge any residue current to the ground. Secondly, the set of communication terminals is configured to enable communication between the VCU of the electric vehicle and the energy refilling apparatus. Thirdly, the set of power terminals is configured to establish the connection with a battery of the electric vehicle. Finally, the set of proximity terminals is configured to initiate the charging of the battery. In case of any charge termination signal is transmitted by the VCU or rise is temperature of vehicle components such as battery or the vehicle inlet is detected or any connection interruption occurs, then the charging of the battery is terminated. The details of the energy refilling apparatus and energy refilling system are further explained with the aid of figure descriptions. [035] Referring now to Figure 1a, an exemplary model of an energy-refilling apparatus 100 for charging an electric vehicle is illustrated. The energy-refilling apparatus 100 comprises a housing 102. Further, the housing 102 comprises a plurality of terminals 104, 106a, 106b, 108, 110 to establish a plurality of connections with an electric vehicle inlet in a sequential manner. The plurality of terminals 104, 106a, 106b, 108, 110 are configured with different lengths. The sequential connection of the plurality of terminals 104, 106a, 106b, 108, 110 of the energy refilling apparatus or charging gun with a plurality of terminals of an electric vehicle inlet is achieved by providing varying lengths of the plurality of terminals 104, 106a, 106b, 108, 110 of the energy refilling apparatus 100. The plurality of terminals 104, 106a, 106b, 108, 110 of the housing 102 may be implemented either as male connectors or as female connectors. In one of the embodiments, the electric vehicle inlet may be implemented as a female connector and the energy refilling apparatus 100 may be implemented as a male connector. Alternatively, in another embodiment the electric vehicle inlet may be implemented as male connector and the energy refilling apparatus 100 may be implemented as female connector. Therefore, when the plurality of terminals 104, 106a, 106b, 108, 110 of the housing 102 are male connectors, a plurality of terminals of a casing of the electric vehicle inlet implemented as female connectors. In some embodiments, when the electric vehicle inlet is implemented as a male connector having a plurality of terminals 204, 206a, 206b, 208, 210 then the energy refilling apparatus 100 may be implemented as a female connector having a plurality of terminals 104, 106a, 106b, 108, 110. The housing 102 is made up of an insulating material, such as thermoplastic or silicon material with an ergonomic shape to allow for safe handling of the apparatus. [036] The housing 102 is configured to accommodate the plurality of terminals 106a, 106b, 104, 108, 110 that are essential for charging the electric vehicle. The plurality of terminals 106a, 106b, 104, 108, 110 are placed inside the housing 102 in a certain order (for example, as per universal standard) for ensuring charging the electric vehicle. The housing 102 further comprises a set of temperature sensors 120 to monitor the temperature of the plurality of terminals 104, 106a, 106b, 108, 110. The set of temperature sensors 120 is configured to notify a vehicle control unit (VCU) or RCCB to terminate the charging of the battery, when temperature of the housing 102 is increased above a threshold. The set of temperature sensors 120 may include, but not limited to, thermocouples, resistance temperature detectors (RTDs), Negative Temperature Coefficient (NTC) thermistors, infrared sensor, semiconductor sensors, and the like. It may be noted that the temperature sensor 120 may be positioned inside the energy-refilling apparatus 100. In some embodiments, the set of temperature sensors 120 may be positioned adjacent to the power terminals 106a, 106b of the housing 102. The position of the set of temperature sensors 120 can be changed based on the requirement. In an embodiment, one or more temperature sensors may be installed inside the housing. [037] Referring now to Figure 1b, a schematic diagram of an energy-refilling apparatus 100 for charging an electric vehicle is illustrated. According to the embodiment, the plurality of terminals 104, 106a, 106b, 108, 110 are provided in the housing 102 for transferring power from an external power supply (may also be referred as charging station) to the electric vehicle via an electric vehicle inlet. The electric vehicle inlet is attached to the electric vehicle, whereas the energy refilling apparatus 100 is movable. It may be noted that the energy refilling apparatus 100 may be a portable device that can be kept inside a storage unit of the electric vehicle. In some embodiments, the energy refilling apparatus 100 can be attached with the charging station for charging the battery. The electric vehicle inlet is a port or a socket through which electric charges are transferred to the electric vehicle from the charging station. Further, the electric vehicle inlet may communicate with the external power supply or the energy refilling apparatus to initiate or terminate the charging operation of the electric vehicle. [038] The plurality of terminals 104, 106a, 106b, 108, 110 comprises an earth terminal 104, a set of communication terminals 108, a set of power terminals 106a, 106b, and a set of proximity terminals 110. Initially, the earth terminal 104 of length L1 is connected to the electric vehicle inlet. The earth terminal 104 is the longest of all other terminals of the energy refilling apparatus 100. The electric vehicle inlet first establishes contact with the earth terminal 104 to prevent any potential hazards. For example, the potential hazards such as electrical hazards may occur due to surge or residual current. For instance, if any residue or leakage current is detected in AC supply lines then the residue current is diverted to the ground for safe discharge. [039] The set of communication terminals 108 of length L2 is connected to the electric vehicle inlet after the connection between the electric vehicle inlet and the earth terminal 104 is established. The set of communication terminals 108 is provided to ensure that the communication is initiated with the external power supply before connecting the set of power terminals 106a, 106b. The length L2 of the set of communication terminals 108 is lesser than the length L1 of the earth terminal 104 (i.e. L2< L1). The set of communication terminals 108 is connected before connecting the power terminals 106a, 106b to ensure that the communication is first initiated with the vehicle before connecting the set of power terminals 106a, 106b. [040] When the set of communication terminals 108 is connected with the electric vehicle inlet, the Vehicle Control Unit (VCU) of the electric vehicle is notified about the connection via a Controller Area Network2 (CAN2) bus. Further, a communication between the external power supply or energy refilling apparatus 100 and the VCU is established via the set of communication terminals 108 of the energy refilling apparatus 100. As a result, the energy refilling apparatus 100, or external power supply may notify the VCU when AC or DC power is about to be transferred, and the VCU may respond appropriately by preparing the battery accordingly for charging. Consequently, it has been observed that the delay due to the preparation time of the battery in the charging process is reduced when the set of power terminals 106a, 106b initiated the transferring of AC or DC supply. [041] For example, when the communication terminal is connected, a control signal is transmitted to the VCU as an indication of connection established between the energy filling apparatus or charging gun and the electric vehicle inlet. Further, the VCU organizes the battery of the electric vehicle for receiving power supply (AC or DC supply) through the set of power or charging terminals by sending a signal to the battery via a Controller Area Network1 (CAN1) bus. The communication between battery and the VCU is enabled via the Controller Area Network1 (CAN1) bus. [042] The set of power terminals 106a, 106b of length L3 is connected to the electric vehicle inlet, after the connection between the communication terminals of the electric vehicle inlet and the set of communication terminals 108, is established. The length L3 of the set of power terminals 106a, 106b is lesser than the length L2 of the set of communication terminals 108 (i.e. L3< L2). The set of power terminals 106a, 106b acts as positive and negative terminals for charging the battery in case of Direct Current (DC) charging. In the case of Alternating Current (AC) charging, the set of power terminals 106a, 106b acts as phase and neutral terminals. When the set of power terminals 106a, 106b receive AC supply from the external power supply, an AC blocking unit in a battery management system disconnects the battery from the set of power terminals 106a, 106b. The AC supply or power transferred from the external power supply is routed to a power converter (shown in figure 4) to convert AC power to DC power. Further, the converted power or the DC power is fed to the battery for charging through an alternate path or connection. The alternate path is a connection line that is established between the battery and the power converter separate from the direct connection of the battery with the set of power terminals 106a, 106b. [043] The set of proximity terminals 110 of length L4 is connected to the proximity terminals of the electric vehicle inlet, after the connection between the power terminals of the electric vehicle inlet and the set of power terminals 106a, 106b is established. The length L4 of the set of proximity terminals 110 is lesser than the length L3 of the set of power terminals (i.e., L4< L3). The set of proximity terminals 110 are connected by connecting proximity IN and OUT terminals to the VCU. Consequently, the VCU learns about the connection between the set of proximity terminals 110 and the electric vehicle inlet. After detecting that the set of proximity terminals 110 is connected to the electric vehicle inlet, a solenoid may be latched to the housing 102 to prevent any disconnection while transferring power from an external power supply to an electric vehicle inlet. An aperture 118 is provided in the housing 102 for latching the solenoid to the housing 102. Further, the set of power terminals 106a, 106b is configured to enable transmission of power from the external power supply to the battery via the electric vehicle inlet, after detecting that the set of proximity terminals 110 is connected to the electric vehicle inlet. In one embodiment, the solenoid implemented in the electric vehicle inlet is shown in Figure 2. [044] Referring now to Figure 2, a schematic diagram of an electric vehicle inlet 200 for enabling the charging of an electric vehicle is illustrated. The electric vehicle inlet 200 comprises a casing 202 and a solenoid 212. The solenoid 212 is attached to the casing 202. The solenoid 212 is latched to the housing 102 of the energy refilling apparatus 100 to prevent any disconnection while transferring power from an external power supply to the electric vehicle inlet 200. The solenoid enables an electromagnetic latching mechanism that is facilitated by the power received from the battery. The solenoid 212 also provides feedback regarding the latching status of the energy refilling apparatus 100 to the VCU of the electric vehicle. [045] The casing 202 includes a plurality of terminals 204, 206a, 206b, 208, 210 comprising an earth terminal 204, a set of communication terminals 208, a set of power terminals 206a, 206b, and a set of proximity terminals 210. The earth terminal 204 is of length L1. The set of communication terminals 208 is of length L2. The length L2 is lesser than the length L1. The set of power terminals 206a, 206b of length L3. The length L3 is lesser than the length L2. The set of proximity terminals 210 of length L4. The length L4 is lesser than length L3. [046] The plurality of terminals 204, 206a, 206b, 208, 210 can establish a plurality of connections with an energy refiling apparatus in a sequential manner. The plurality of terminals 204, 206a, 206b, 208, 210 of the casing 202 may be implemented either as male connectors or as female connectors. In one of the embodiments, the electric vehicle inlet 200 may be implemented as a female connector and the energy refilling apparatus 100 may be implemented as a male connector. Alternatively in another embodiment, the electric vehicle inlet 200 may be implemented as a male connector and the energy refilling apparatus 100 may be implemented as a female connector. Therefore, when the plurality of terminals 204, 206a, 206b, 208, 210 of the casing 202 are female connectors, a plurality of terminals of a housing of the energy refilling apparatus function as male connectors. In some embodiments, the electric vehicle inlet 200 may be a male connector having a plurality of terminals 204, 206a, 206b, 208, 210 and the energy refilling apparatus 100 may be implemented as a female connector having a plurality of terminals 104, 106a, 106b, 108, 110. Therefore, when the plurality of terminals 204, 206a, 206b, 208, 210 of the casing 202 are implemented as male connectors, a plurality of terminals of a housing of the energy refilling apparatus may be implemented as female connectors. The casing 202 is made of an insulating material, such as thermoplastic or silicon material with a compact shape to fit inside the electric vehicle. [047] The casing 202 is configured to accommodate the plurality (i.e., required number) of terminals 206a, 206b, 204, 208, 210 that are essential for charging of the electric vehicle. The plurality of terminals 206a, 206b, 204, 208, 210 are placed inside the casing 202 in a certain order (as per universal standard) thereby to connect with the plurality of terminals 104, 106a, 106b, 108, 110 of the energy refilling apparatus 100 for charging of the electric vehicle. [048] In an embodiment, a set of temperature sensors 220 may be installed at the electric vehicle inlet side to monitor the temperature of the plurality of terminals, during operation. The set of temperature sensors 220 is configured to notify a vehicle control unit (VCU) to terminate the charging of the battery 204, when temperature is increased above a threshold at the housing 102. The set of temperature sensors 220 may include but not limited to thermocouples, resistance temperature detectors (RTDs), Negative Temperature Coefficient (NTC) thermistors, infrared sensor, semiconductor sensors, and the like. In some embodiments, the set of temperature sensor 220 may be positioned adjacent to the power terminals 206a, 206b of the casing 202. The position of the set of temperature sensor 220 can be changed based on the requirement. The electric vehicle inlet 200 is a port through which electric charges are transferred to the electric vehicle. Further, the electric vehicle inlet 200 may communicate with the external power supply or energy refilling apparatus to initiate or terminate the charging operation of the electric vehicle. [049] Referring now to Figure 3, an energy-refilling system 300 for charging an electric vehicle 304 is illustrated according to an embodiment. The energy refilling system 300 comprises an energy refilling apparatus 100, an external power supply 302, and the electric vehicle 304. The energy refiling apparatus 100 further comprises a set of temperature sensors 120 to monitor the temperature of the plurality of terminals 104, 106a, 106b, 108, 110. A position of the set of temperature sensors 120 can be changed based on the requirement. The set of temperature sensors 120 are configured to notify a vehicle control unit (VCU) or RCCB to terminate the charging of the battery 306, when temperature is increased above a threshold at the housing 102 of the energy refilling apparatus 100. The electric vehicle 304 may include a plurality of components for charging. The plurality of components may include but are not limited to an electric vehicle inlet 200, a battery 306, a Vehicle Control Unit (VCU), a battery management system, an AC blocking unit, a power converter, a CAN1 bus, a CAN2 bus, and a current limiting unit. During the charging operation, one end of the energy-refilling apparatus 100 is connected to the electric vehicle 304 via the electric vehicle inlet 200 and another end of the energy-refilling apparatus 100 is connected to an external power supply 302. Subsequently, the external power supply 302 is triggered to transfer AC power or DC power to the electric vehicle 304. The details regarding the connections between the plurality of components and functionalities of each component inside the electric vehicle 304 during charging is explained the Figure 4. [050] Referring to Figure 4, an exemplary connection arrangement 400 for charging cycle of the electric vehicle is illustrated. According to one of the embodiments, in the energy refilling system 300, the energy-refilling apparatus 100 may be connected to the electric vehicle inlet 200 for charging an electric vehicle 304. The electric vehicle inlet 200 may comprise a casing 202 and a magnetic latching mechanism/ solenoid 212. [051] The casing 202 comprises a plurality of terminals provided for transferring power from an external power supply 302 to the battery 306. A connection between the electric vehicle inlet 200 and the external power supply 302 or energy refilling apparatus 100 may be established before transferring the power to the battery 306. The energy refilling apparatus 100 may establish a connection with the electric vehicle inlet 200 through the plurality of terminals 104, 106a, 106b, 108, 110 of the energy refilling apparatus 100. It is to be noted that the plurality of terminals 104, 106a, 106b, 108, 110 of the housing 102 may be implemented either as male connectors or as female connectors. Therefore, when the plurality of terminals 104, 106a, 106b, 108, 110 of the housing 102 are implemented as female connectors, the plurality of terminals 204, 206a, 206b, 208, 210 of the casing 202 of the electric vehicle inlet 200 are implemented as male connectors. Alternatively, in another embodiment, when the plurality of terminals 104, 106a, 106b, 108, 110 of the housing 102 are implemented as male connectors, the plurality of terminals 204, 206a, 206b, 208, 210 of the casing 202 of the electric vehicle inlet 200 are implemented as female connectors. [052] The plurality of terminals 104, 106a, 106b, 108, 110 of the energy refilling apparatus 100 are configured with different lengths to establish a plurality of connections with the plurality of terminals 204, 206a, 206b, 208, 210 of an electric vehicle inlet 200 in a sequential manner. It is to be noted that the plurality of terminals 204, 206a, 206b, 208, 210 of the casing 202 may be implemented as male connectors or female connectors. It is to be noted that the plurality of terminals 104, 106a, 106b, 108, 110 comprises an earth terminal 104, a set of communication terminals 108, a set of power terminals 106a, 106b, and a set of proximity terminals 110. Further, the plurality of terminals 204, 206a, 206b, 208, 210 comprises an earth terminal 204, a set of communication terminals 208, a set of power terminals (206a, 206b), and a set of proximity terminals 210. [053] Considering the first longest terminal in the housing 102, i.e., the earth terminal 104 is of length L1. The earth terminal 104 of the energy refilling apparatus is configured to connect with a corresponding terminal 204 (i.e., the earth terminal) of the electric vehicle inlet 200 for discharging any residue current. The earth terminal 104 is connected first to prevent any potential hazards. The earth terminal 104 is configured to divert leakage currents in AC or HV line safely to a ground or earth pit via the external power supply 302. For example, in case of any static charges present on the body of the electric vehicle 304 then those charges are discharged through the earth terminal 104. The earth terminal 104 is connected to a Residual Current Circuit Breaker (RCCB) 412. Further details regarding the RCCB 412 are described in the description of Figure 6. [054] Considering the second longest terminal in the housing 102, i.e., the set of communication terminals 108 is of length L2. The communication terminals 108 of the energy refilling apparatus is configured to communicate with the electric vehicle 304 through corresponding terminals 208 (i.e., the set of communication terminals) of the electric vehicle inlet 200. It should be noted that the length L2 of the set of communication terminals 108 is lesser than the length L1 of the earth terminal 104 (i.e. L2