[001] The present subject matter in general relates to electric vehicles. More particularly, but not exclusively, the subject matter relates to a system and method for sharing charge between electric vehicles when both the traction battery and the auxiliary battery of one of the vehicle have been drained out.
BACKGROUND
[002] Background description includes information that may be useful in understanding the present subject matter. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed subject matter, or that any publication specifically or implicitly referenced is prior art.
[003] Advancement in batteries means that electric vehicles have come a long way from being at a nascent stage. However, even with the advent of batteries, there are certain drawbacks associated with electric vehicles that hinder it from going mainstream.
[004] Conventional fuel operated vehicles can be towed to a nearest petrol bunk in the event of an empty tank. Also, empty tank means, the vehicle is that much lighter and easier to tow, thereby requiring less manpower. However, with electric vehicles, a dead battery is as good as a completely charged battery while having the electric vehicle to be moved around, thereby having the weight factored in at all times.
[005] There are certain measures that one can adopt when the battery of an electric vehicle is completely dead. One such measure is carrying a backup portable battery having inbuilt DC-AC converter, thereby charging the vehicle in slow charging mode by supplying converted AC supply to vehicle’s on-board charger. Since, this is a cumbersome practice, hence is not desirable.
[006] Furthermore, the electric vehicles cannot be simply towed around as is the case with the fuel operated vehicles. Doing such an exercise may damage the propulsion components of the electric vehicles due to heating issues of Motor Generator Unit (MGU). Road Side Assistance (RSA) can also be used for moving the vehicle to the nearest charging dock. One can also use another electric vehicle’s battery (nearest available vehicle) to top-up the discharged battery in order to enable it to reach the nearest charger.
[007] However, conventional systems disclose an arrangement wherein charge can be shared between two electric vehicles when only the high voltage battery of an electric vehicle is drained and not the low voltage. The low voltage battery, in the absence of the high voltage battery, is used to perform the function of conducting safety checks before beginning the transmission of the power between vehicles.
[008] Furthermore, some prior arts disclose system wherein two electric vehicles are configured to share charge in case of a depleted high voltage battery. However, they only disclose an arrangement wherein a threshold is set to avoid the over discharging of the charge sharing vehicle.
[009] Thus, there is no solution offered in the current conventional setup that performs charge sharing even when the low voltage battery is depleted along with the high voltage battery. Without the functioning of the low voltage battery, control units such as VCU will not power up and cannot perform any safety checks before or during the power transmission.
[0010] As an example, referring to FIG. 1, disclosed is a conventional electrical layout 10 of an electric vehicle, in accordance with an embodiment. The layout 10 comprises a plurality of high voltage batteries 16, 18, a battery management system 24, a positive relay 30 and a negative relay 32, a pre-charge relay 26, a junction box 34, a DC DC converter 36, an auxiliary power battery 38, a vehicle control unit 40, a HV measurement and communication 42 and an input/output medium 44.
[0011] The high voltage batteries 16, 18 are configured to run the transmission (not shown) of the electric vehicle. The battery management system 24 is configured to manage the charging and discharging of the high voltage batteries 16, 18. The battery management system 24 closes the positive relay 30 and the negative relay 32 when the high voltage batteries 16 are to be charged. To prevent an influx of current, the battery management system 24 first closes the pre-charge relay 26 before closing the positive relay 30.
[0012] The HV measurement and communication 42 is configured to perform the safety checks while receiving the charge from another vehicle. The HV measurement and communication 42 is powered by the auxiliary power battery 38. In the absence of power from the auxiliary power battery 38, the HV measurement and communication 42 will not be able to perform the required safety checks, thereby causing concern while receiving high voltage power from another electric vehicle.
OBJECTS OF THE DISCLOSURE
[0013] In view of the foregoing limitations inherent in state-of-the-art, some of the objects of the present disclosure, which at least one embodiment herein satisfy, are listed herein below.
[0014] It is an object of the present subject matter to propose a system for transmitting power from a first electric vehicle to a second electric vehicle.
[0015] It is another object of the present subject matter to propose a method for supplying power from the first electric vehicle to the second electric vehicle.
[0016] It is yet another object of the present subject matter to propose a method for receiving power from the first electric vehicle to the second electric vehicle.
[0017] It is still yet another object of the present subject matter to propose a method for transmitting power from the first electric vehicle to the second electric vehicle.
[0018] It is a further object of the present subject matter to propose charge sharing when low voltage battery of the electric vehicle to be charged is dead.
[0019] These and other objects and advantages of the present subject matter will be apparent to those skilled in the art after a consideration of the following detailed description taken in conjunction with the accompanying drawings in which a preferred form of the present subject matter is illustrated.
SUMMARY
[0020] This summary is provided to introduce concepts related to transmitting power between electric vehicles. The concepts are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
[0021] The present subject matter relates to a method for supplying power from a first electric vehicle to a second electric vehicle. The method includes the steps of determining whether voltage available at second vehicle auxiliary battery is lesser than a threshold voltage; allowing, using a first vehicle first forward bias diode, flow of electric current to a first vehicle NPN transistor when voltage is lesser than the threshold voltage; turning on, using the electric current passed through the first vehicle first forward bias diode, the first vehicle NPN transistor; turning on, using the first vehicle NPN transistor, a first vehicle relay; connecting, using the first vehicle relay, a first vehicle input/output to the first vehicle controller; supplying, using the first vehicle controller, power to the first vehicle input/output; and supplying, using the first vehicle input/output, power to a second vehicle controller.
[0022] The present subject matter further relates to a method for receiving power from the first electric vehicle to the second electric vehicle. The method includes the steps of determining whether voltage available at second vehicle auxiliary battery is greater than a threshold voltage; supplying, using the first vehicle controller, power to the second vehicle input/output; allowing, using a second vehicle second forward bias diode, flow of electric current from the second vehicle input/output to a second vehicle NPN transistor; turning on, using the electric current passed through the second vehicle second forward bias diode, the second vehicle NPN transistor; turning on, using the second vehicle NPN transistor, a second vehicle relay; and connecting, using the second vehicle relay, the second vehicle input/output with the second vehicle controller. Thereby allowing second vehicle controller to power up and perform basic safety checks and enabling power transfer between the vehicles.
[0023] The present subject matter further relates to a method for transmitting power from the first electric vehicle to the second electric vehicle. The method includes the steps of determining whether the voltage available at second vehicle auxiliary battery is greater than a threshold voltage; allowing, using a first vehicle first forward bias diode, flow of electric current to a first vehicle NPN transistor; turning on, using the electric current passed through the first vehicle first forward bias diode, the first vehicle NPN transistor; turning on, using the first vehicle NPN transistor, a first vehicle relay; connecting, using the first vehicle relay, first vehicle input/output with the first vehicle controller; supplying, using the first vehicle controller, power to the second vehicle input/output; allowing, using a second vehicle second forward bias diode, flow of electric current from the second vehicle input/output to a second vehicle NPN transistor; turning on, using the electric current passed through the second vehicle second forward bias diode, the second vehicle NPN transistor; turning on, using the second vehicle NPN transistor, a second vehicle relay; and connecting, using the second vehicle relay, the second vehicle input/output with a second vehicle controller. Thereby allowing second vehicle controller to power up and perform basic safety checks and enabling power transfer between the vehicles.
[0024] The present subject matter further relates to a system for transmitting power from the first electric vehicle to the second electric vehicle. The system includes determining whether voltage available at second vehicle auxiliary battery is greater than a threshold voltage. The first vehicle first forward bias diode is in contact with the first vehicle controller such that the first vehicle controller allows the flow of electric current through the first vehicle controller. The first vehicle NPN transistor is in contact with the first vehicle first forward bias diode such that the electric current flows through the first vehicle first forward bias diode to the first vehicle NPN transistor. The emitter of the first vehicle NPN transistor is grounded and the collector end of the first vehicle NPN transistor is connected to the first vehicle controller and first vehicle input/output using at least two reverse bias diodes. The first vehicle relay is configured to establish a connection between a first vehicle input/output and the first vehicle controller. The first vehicle relay is operably configured to be connected to the collector end of the first vehicle NPN transistor such that the flow of electric current from the first vehicle NPN transistor connects the first vehicle input/output with the first vehicle controller. The first vehicle second forward bias diode is in contact with the first vehicle input/output and the first vehicle NPN transistor such that the first vehicle second forward bias diode allows the flow of electric current from the first vehicle input/output to the first vehicle NPN transistor.
[0025] Other objects, features and advantages of the present subject matter will become apparent from the following detailed description. It should be understood, however, that the detailed description and the specific examples, while indicating specific embodiments of the subject matter, are given by way of illustration only, since various changes and modifications within the spirit and scope of the subject matter will become apparent to those skilled in the art from this detailed description.
BRIEF DESCRIPTION OF ACCOMPANYING DRAWINGS
[0026] While the specification concludes with claims particularly pointing out and distinctly claiming the subject matter that is regarded as forming the present subject matter, it is believed that the present disclosure will be better understood from the following description taken in conjunction with the accompanying drawings, where like reference numerals designate like structural and other elements, in which:
[0027] FIG. 1 discloses a conventional electrical layout 10 of an electric vehicle;
[0028] FIG. 2 discloses a system 100 for transmitting power from a first electric vehicle 102 to a second electric vehicle 104, in accordance with an embodiment; and
[0029] FIGs. 3A, 3B and 3C collectively describe a method for transmitting power from the first electric vehicle 102 to the second electric vehicle 104.
[0030] The figures depict embodiments of the present subject matter for the purposes of illustration only. A person skilled in the art will easily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the subject matter described herein.
DETAILED DESCRIPTION
[0031] The detailed description of various exemplary embodiments of the subject matter is described herein with reference to the accompanying drawings. It should be noted that the embodiments are described herein in such details as to clearly communicate the disclosure. However, the amount of details provided herein is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present subject matter as defined by the appended claims.
[0032] It is also to be understood that various arrangements may be devised that, although not explicitly described or shown herein, embody the principles of the present subject matter. Moreover, all statements herein reciting principles, aspects, and embodiments of the present subject matter, as well as specific examples, are intended to encompass equivalents thereof.
[0033] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms “a”, “an”, and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises”, “comprising”, “includes”, “consisting” and/or “including” when used herein, specify the presence of stated features, integers, steps, operations, elements and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof.
[0034] It should also be noted that in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may, in fact, be executed concurrently or may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
[0035] In addition, the descriptions of "first", "second", “third”, and the like in the present subject matter are used for the purpose of description only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may include at least one of the features, either explicitly or implicitly.
[0036] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which example embodiments belong. It will be further understood that terms, e.g., those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
[0037] Referring to FIG. 2, a system 100 for transmitting power from a first electric vehicle 102 to a second electric vehicle 104 is disclosed in accordance with an embodiment of the present subject matter.
[0038] For the purposes of explanation, the first electric vehicle 102 is considered as the vehicle that is configured to share the charge (or power) and the second electric vehicle 104 is considered as the vehicle that receives the charge (or power) from the first electric vehicle 102.
[0039] The system 100 has been explained in relation with the first electric vehicle 102 to share and receive the charge to/from the second vehicle 104. It will be apparent in view of the following description that the same system 100 can be deployed in the second vehicle 104 to share and receive the charge to/from the first vehicle 102.
[0040] In an embodiment, first vehicle input/output 110 and second vehicle input/output 108 are connected to each other using an electric cable when there is a need to transmit power from the first vehicle 102 to the second vehicle 104.
[0041] A high voltage measurement and communication unit of a second vehicle 104 is configured to perform necessary safety checks before establishing a connection between a first vehicle traction battery of the first vehicle 102 and a second vehicle traction battery of the second vehicle 104. Once, the connection is setup, the high voltage power can transfer from first vehicle 102 traction battery to second vehicle 104 traction battery. The high voltage measurement and communication unit of the first vehicle 102 and the second vehicle 104 is configured to function by obtaining power from the first vehicle auxiliary battery and second vehicle auxiliary battery respectively. The system 100 described below, which is deployed in the high voltage measurement and communication units of the first vehicle 102 and the second vehicle 104, is configured to power the high voltage measurement and communication unit and perform necessary safety checks.
[0042] The system 100 comprises a first vehicle controller 106, a first vehicle first forward bias diode 112, a first vehicle NPN transistor 114, a first vehicle relay 116, a first vehicle second forward bias diode 136 and first vehicle reverse bias diodes 134.
[0043] In an embodiment, the first vehicle controller 106 performs the necessary safety checks required as part of the high voltage measurement and communication unit of a first vehicle 102.
[0044] The first vehicle first forward bias diode 112 is in contact with the first vehicle controller 106 such that the first vehicle controller 106 allows the flow of electric current through the first forward bias diode 112. The first vehicle NPN transistor 114 is connected to the first vehicle first forward bias diode 112 such that the electric current flows through the first vehicle first forward bias diode 112 to the first vehicle NPN transistor 114 via the base end. The emitter end 130 of the first vehicle NPN transistor 114 is grounded. The collector end 132 of the first vehicle NPN transistor 114 is connected to the first vehicle relay 116.
[0045] The first vehicle relay 116 is configured to establish a connection between a first vehicle input/output 110 and the first vehicle controller 106. The first vehicle relay 116 is further configured to be operably connected to the collector end 132 of the first vehicle NPN transistor 114 such that the flow of electric current from the first vehicle NPN transistor 114 closes the relay 116 and connects the first vehicle controller 106 with the first vehicle input/output 110.
[0046] The first vehicle second forward bias diode 136 is connected to the first vehicle input/output 110 and the first vehicle NPN transistor 114 such that the first vehicle second forward bias diode 136 allows the flow of electric current from the first vehicle input/output 110 to the first vehicle NPN transistor 114 when in power receiving mode from another vehicle.
[0047] In an embodiment, the first vehicle controller 106 establishes a connection between a first vehicle traction battery and a second vehicle traction battery when the first vehicle controller 106 activates the first vehicle NPN transistor 114 and the first vehicle relay 116.
[0048] In accordance with an embodiment of the present subject matter, the system 100 comprises a second vehicle controller 128, a second vehicle first forward bias diode 138, a second vehicle NPN transistor 124, a second vehicle relay 126, a second vehicle second forward bias diode 122 and second vehicle reverse bias diodes 140.
[0049] In an embodiment, the functioning of the second vehicle controller 128, the second vehicle first forward bias diode 138, the second vehicle NPN transistor 124, the second vehicle relay 126, the second vehicle second forward bias diode 122 and the second vehicle reverse bias diodes 140 are similar to the functioning of the first vehicle controller 106, the first vehicle first forward bias diode 112, the first vehicle NPN transistor 114, the first vehicle relay 116, the first vehicle second forward bias diode 136 and the first vehicle reverse bias diodes 134 respectively.
[0050] In an event when both the second vehicle 104 traction battery and the second vehicle 104 auxiliary battery are completely drained out or the voltages are in inoperable ranges, the high voltage measurement and communication unit of the second vehicle 104 will not be able to function to receive power from the first vehicle 102, thereby not be able to perform the necessary safety checks, hence fails to start the power receiving process in the second vehicle 104.
[0051] The second vehicle 104 receives power from the first vehicle 102 via the vehicle to vehicle (V2V) power transfer cable. The V2V cable (not shown) provides power to the second vehicle 104 through the second vehicle input/output 108. The system allows the flow of current through the second vehicle reverse bias diode 140. The voltage developed across the resistors R1 and R2 closes the path across the second vehicle NPN transistor 124, and thereby closes the second vehicle relay 126. The closed path of the second vehicle relay 126 allows the low voltage received from the first vehicle 102 to reach the second vehicle controller 128 of the second vehicle 104.
[0052] In an embodiment, the received power from first vehicle 102 causes the auxiliary components such as second vehicle controller 128 of the second vehicle 104 to power up and perform required safety checks. On completion of the safety checks, the second vehicle 104 comes in the state of receiving high voltage power from the traction battery of first vehicle 102 to the traction battery of the second vehicle 104 via the V2V power transfer cable.
[0053] In an embodiment, the deployment of the system 100 is not limited to an electric vehicle, and can also be deployed in a hybrid electric vehicle, wherein when the fuel, traction battery and auxiliary battery of the second vehicle 104 are completely depleted, the second vehicle 104 is configured to receive power from the first vehicle 102 using the system 100 deployed within.
[0054] Referring to FIGs. 3A, 3B and 3C, there is disclosed a method for transmitting power from a first vehicle 102 to a second vehicle 104.
[0055] At step 302, the first vehicle 102 and the second vehicle 104 are connected to each other using the vehicle to vehicle (V2V) power transfer cable, when there is a need for transmitting power from one vehicle 102 to another vehicle 104.
[0056] In an embodiment, one of the two or both the vehicles 102, 104 comprise a sensor that sends distress signal to one of the two vehicles 102, 104 when the power in one of two vehicles 102, 104 is completely drained out or not having sufficient power to perform required steps such as safety checks, controlling of high voltage relays. As an example, consider the second vehicle 104 to have drained out the charge from both, the traction battery and auxiliary battery. The sensor of the second vehicle 104 sends the distress signal to the first vehicle 102, wherein the distress signal includes the location of the second vehicle 104 and a message that the batteries have been drained out. Taking cue from this signal, the first vehicle 102 reaches the location of the stranded second vehicle 104.
[0057] At step 302, the first vehicle input/output 110 and the second vehicle input/output 108 are connected using the electric cable such as V2V power transfer cable.
[0058] At step 304, the charge sharing is enabled in the first vehicle 102 using a switch or a control through a display or a user handheld device.
[0059] At step 306, the voltage of the auxiliary battery of the second vehicle 104 is compared with a certain threshold voltage Vt. For example, if the voltage of the auxiliary battery of the second vehicle 104 is below 8V, the second vehicle controller 128 of the second vehicle 104 will not be able to perform basic safety checks and will not be able to power up the second vehicle 104 for receiving power from the first vehicle 102 via the V2V power transfer cable.
[0060] At step 308, the second vehicle controller 128 is in a state to perform basic safety checks in second vehicle 104, and allow the second vehicle 104 to receive power from the first vehicle 102 via the V2V power transfer cable, if it is determined at step 306 that the voltage of the auxiliary battery of second vehicle 104 is greater than the threshold voltage Vt. The second vehicle controller 128 establishes a connection between the first vehicle traction battery and the second vehicle traction battery to receive high voltage power via the V2V power transfer cable.
[0061] At step 310, the first vehicle first forward bias diode 112 allows the flow of the electric current to the first vehicle NPN transistor 114, if it is determined at step 306 that the voltage of the auxiliary battery of second vehicle 104 is lesser than the threshold voltage Vt. The electric current passing through the first vehicle first forward bias diode 112 turns on the first vehicle NPN transistor 114.
[0062] At step 312, the first vehicle NPN transistor 114 turns on the first vehicle relay 116.
[0063] At step 314, the first vehicle relay 116 supplies low voltage power from the first vehicle controller 106 to the input/ output 108 of second vehicle 104.
[0064] At step 316, the voltage at the second vehicle input/ output 108 of the second vehicle 104 is compared with a certain threshold voltage Vt. For example, if the voltage at the second vehicle input/ output 108 of the second vehicle 104 is below 8V, the second vehicle controller 128 of the second vehicle 104 will not be able to perform basic safety checks and will not be able to power up the second vehicle 104 for receiving power from the first vehicle 102 via the V2V power transfer cable.
[0065] At step 318, the first vehicle controller 106 terminates the process of charge sharing or power transfer if it is determined at step 316 that the voltage at the second vehicle input/output 108 is less than the threshold voltage Vt.
[0066] At step 320, the electric current flows from the second vehicle input/output 108 to the second vehicle second forward bias diode 122, if it is determined at step 316 that the voltage at the second vehicle input/output 108 is greater than the threshold voltage Vt.
[0067] At step 322, the second vehicle second forward bias diode 122 allows the flow of electric current from the second vehicle input/output 108 to the second vehicle NPN transistor 124. This current flow turns on the second vehicle NPN transistor 124.
[0068] At step 324, the second vehicle NPN transistor 124 turns on the second vehicle relay 126.
[0069] At step 326, the second vehicle relay 126 connects the second vehicle input/output 108 with the second vehicle controller 128.
[0070] At step 328, the second vehicle controller 128 establishes a connection between the first vehicle controller 106 and the second vehicle controller 128, thereby turning up the second vehicle controller 128 to perform safety checks.
[0071] At step 330, after the successful completion of safety checks, the second vehicle controller 128 enables high voltage power transfer from first vehicle 102 traction battery to second vehicle 104 traction battery.
[0072] In an embodiment, as the second vehicle 104 traction battery is being charged, the second vehicle 104 auxiliary battery gets charged using a traditional DC DC converter.
[0073] The steps 302-330 have been illustrated as transmitting the charge from the first vehicle 102 to the second vehicle 104. In an embodiment, the same steps can be used to transmit the charge from the second vehicle 104 to the first vehicle 102 using the corresponding elements of the second vehicle 104 and the first vehicle 102.
TECHNICAL ADVANTAGES
[0074] The present subject matter proposes a method for supplying, receiving, and transmitting power from a first vehicle to a second vehicle; and a corresponding system for transmitting power from the first vehicle to the second vehicle, in the form of different embodiments as described hereinabove and suitably claimed in the context of the present subject matter, thereby devising easy to use, flexible and reliable to operate, accessible in reach, and cost effective solution in the form of vehicle to vehicle charge sharing.
[0075] Furthermore, each of the appended claims defines a separate invention, which for infringement purposes is recognized as including equivalents to the various elements or limitations specified in the claims. Depending on the context, all references below to the “invention” may in some cases refer to certain specific embodiments only. In other cases, it will be recognized that references to the “invention” will refer to subject matter recited in one or more, but not necessarily all, of the claims.
[0076] Groupings of alternative elements or embodiments of the invention disclosed herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified thus fulfilling the written description of all groups used in the appended claims.
[0077] Furthermore, those skilled in the art can appreciate that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. It will be appreciated that several of the above-disclosed and other features and functions, or alternatives thereof, may be combined into other systems or applications. Various presently unforeseen or unanticipated alternatives, modifications, variations, or improvements therein may subsequently be made by those skilled in the art without departing from the scope of the present disclosure as encompassed by the following claims.
[0078] The claims, as originally presented and as they may be amended, encompass variations, alternatives, modifications, improvements, equivalents, and substantial equivalents of the embodiments and teachings disclosed herein, including those that are presently unforeseen or unappreciated, and that, for example, may arise from applicants/patentees and others.
[0079] While the foregoing describes various embodiments of the present disclosure, other and further embodiments of the present disclosure may be devised without departing from the basic scope thereof. The scope of the present disclosure is determined by the claims that follow. The present disclosure is not limited to the described embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.

Claims:We claim:
1. A method (300) for supplying power from a first vehicle (102) to a second vehicle (104), the method comprising the steps:
allowing, using a first vehicle first forward bias diode (112), flow of electric current to a first vehicle NPN transistor (114) when second vehicle auxiliary battery voltage is lesser than a threshold voltage (Vt);
turning on, using the electric current passed through the first vehicle first forward bias diode (112), the first vehicle NPN transistor (114);
turning on, using the first vehicle NPN transistor (114), a first vehicle relay (116);
connecting, using the first vehicle relay (116), a first vehicle input/output (110) to the first vehicle controller (106);
supplying, using the first vehicle controller (106), power to the first vehicle input/output (110); and
supplying, using the first vehicle input/output (110), power to a second vehicle controller (128).

2. The method (300) as claimed in claim 1, comprising establishing, using the first vehicle controller (106), a connection between a first vehicle traction battery and a second vehicle traction battery when the second vehicle auxiliary battery voltage is greater than the threshold voltage (Vt).

3. The method (300) as claimed in claim 1, comprising allowing, using a second vehicle second forward bias diode (122), flow of electric current from the second vehicle input/output (108) to a second vehicle NPN transistor (124).

4. The method (300) as claimed in claim 3, comprising turning on, using the electric current passed through the second vehicle second forward bias diode (122), the second vehicle NPN transistor (124).

5. The method (300) as claimed in claim 4, comprising turning on, using the second vehicle NPN transistor (124), a second vehicle relay (126).

6. The method (300) as claimed in claim 5, comprising connecting, using the second vehicle relay (126), the second vehicle input/output (108) with the second vehicle controller (128).

7. The method (300) as claimed in claim 6, wherein the second vehicle controller (128) is configured to perform necessary checks before establishing a connection between the first vehicle traction battery and the second vehicle traction battery.

8. The method (300) as claimed in claim 1, comprising connecting, using an electric cable, the first vehicle input/output (110) and the second vehicle input/output (108).

9. A method (300) for receiving power from a first vehicle (102) to a second vehicle (104), the method comprising the steps:
supplying, from the first vehicle controller (106), power to the second vehicle input/output (108);
allowing, using a second vehicle second forward bias diode (122), flow of electric current from the second vehicle input/output (108) to a second vehicle NPN transistor (124);
turning on, using the electric current passed through the second vehicle second forward bias diode (122), the second vehicle NPN transistor (124);
turning on, using the second vehicle NPN transistor (124), a second vehicle relay (126); and
connecting, using the second vehicle relay (126), the second vehicle input/output (108) with the second vehicle controller (128).

10. The method (300) as claimed in claim 9, comprising establishing, using the first vehicle first controller (106), a connection between a first traction vehicle battery and a second vehicle traction battery when the second vehicle auxiliary battery voltage is greater than the threshold voltage (Vt).

11. The method (300) as claimed in 9, comprising allowing, using a first vehicle first forward bias diode (112), flow of electric current to a first vehicle NPN transistor (114) when the second vehicle auxiliary battery voltage is lesser than the threshold voltage (Vt).

12. The method (300) as claimed in claim 11, comprising turning on, using the electric current passed through the first vehicle first forward bias diode (112), the first vehicle NPN transistor (114).

13. The method (300) as claimed in claim 12, comprising turning on, using the first vehicle NPN transistor (114), a first vehicle relay (116).

14. The method (300) as claimed in claim 13, comprising connecting, using the first vehicle relay (116), first vehicle input/output (110) with a first vehicle controller (106).

15. The method (300) as claimed in claim 14, comprising supplying, using the first vehicle input/output (110), power to the second vehicle controller (128).

16. The method (300) as claimed in claim 15, comprising connecting, using an electric cable, the first vehicle input/output (110) and the second vehicle input/output (108).

17. The method (300) as claimed in claim 9, wherein the second vehicle controller (128) is configured to perform necessary checks before establishing a connection between the first vehicle traction battery and the second vehicle traction battery.

18. A method (300) for transmitting power from a first vehicle (102) to a second vehicle (104), the method comprising the steps:
allowing, using a first vehicle first forward bias diode (112), flow of electric current to a first vehicle NPN transistor (114) when the second vehicle auxiliary battery voltage is lesser than the threshold voltage (Vt);
turning on, using the electric current passed through the first vehicle first forward bias diode (112), the first vehicle NPN transistor (114);
turning on, using the first vehicle NPN transistor (114), a first vehicle relay (116);
connecting, using the first vehicle relay (116), first vehicle input/output (110) with the first vehicle controller (106);
supplying, using the first vehicle controller (106), power to the second vehicle input/output (108);
allowing, using a second vehicle second forward bias diode (122), flow of electric current from the second vehicle input/output (108) to a second vehicle NPN transistor (124);
turning on, using the electric current passed through the second vehicle second forward bias diode (122), the second vehicle NPN transistor (124);
turning on, using the second vehicle NPN transistor (124), a second vehicle relay (126); and
connecting, using the second vehicle relay (126), the second vehicle input/output (108) with a second vehicle controller (128).

19. The method (300) as claimed in claim 18, comprising establishing, using the first vehicle controller (106), a connection between a first vehicle traction battery and a second vehicle traction battery when the second vehicle auxiliary battery voltage is greater than the threshold voltage (Vt).

20. The method (300) as claimed in claim 18, wherein the second vehicle controller (128) is configured to perform necessary checks before establishing a connection between the first vehicle traction battery and the second vehicle traction battery.

21. The method (300) as claimed in claim 18, comprising connecting, using an electric cable, the first vehicle input/output (110) and the second vehicle input/output (108).

22. A system (100) for transmitting power from a first vehicle (102) to a second vehicle (104), the system (100) comprising:
a first vehicle first forward bias diode (112) in contact with the first vehicle controller (106) such that the first vehicle controller (106) allows the flow of electric current through the first vehicle controller (106);
a first vehicle NPN transistor (114) in contact with the first vehicle first forward bias diode (112) such that the electric current flows through the first vehicle first forward bias diode (112) to the first vehicle NPN transistor (114), wherein,
emitter end (130) of the first vehicle NPN transistor (114) is grounded; and
collector end (132) of the first vehicle NPN transistor (114) is connected to the first vehicle controller (106) and first vehicle input/output (110) using at least two reverse bias diodes (134);
a first vehicle relay (116) configured to:
establish a connection between a first vehicle input/output (110) and the first vehicle controller (106); and
operably be connected to the collector end (132) of the first vehicle NPN transistor (114) such that the flow of electric current from the first vehicle NPN transistor (114) connects the first vehicle input/output (110) with the first vehicle controller (106); and
a first vehicle second forward bias diode (136) in contact with the first vehicle input/output (110) and the first vehicle NPN transistor (114) such that the first vehicle second forward bias diode (136) allows the flow of electric current from the first vehicle input/output (110) to the first vehicle NPN transistor (114).

23. The system (100) as claimed in claim 22, wherein the first vehicle controller (106) is configured to perform necessary checks before establishing a connection between a first vehicle traction battery and a second vehicle traction battery.

24. The system (100) as claimed in claim 22, wherein the first vehicle controller (106) establishes a connection between the first vehicle battery traction and the second vehicle traction battery when the second vehicle auxiliary battery voltage is greater than the threshold voltage (Vt).

25. The system as claimed in claim 22, comprising an electric cable configured to connect the first vehicle input/output (110) and the second vehicle input/output (108).