Power reception circuit for electric vehicle, construction method of the same, and electric vehicle

Abstract

To provide a power reception circuit for an electric vehicle which is mounted on an existing plug-in power supply vehicle to enable the existing plug-in power supply vehicle to be charged in a wireless charging method.SOLUTION: A power reception circuit for an electric vehicle mounted on a plug-in power supply vehicle includes: a wireless communication converter which can communicate with a wireless power supply inverter; a power reception coil which receives electric power transmitted from the wireless power supply inverter through a power transmission coil; a rectifier connected to the power reception coil; a second power supply outlet which is attached to a power supply port where an existing power supply outlet is disposed in place of the existing power supply outlet disposed in the plug-in power supply vehicle; a plug-in power supply plug which is connected to the second power supply outlet and may be connected to the existing power supply outlet; and a wireless power supply plug which is connected to the wireless communication converter and the rectifier and may be connected to the existing power supply outlet.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a power receiving circuit for an electric vehicle, a method for constructing a power receiving circuit for an electric vehicle, and an electric vehicle.

[0002] More specifically, the present invention relates to an electric vehicle (EV) power receiving circuit suitable for installation in an electric vehicle (EV) designed using a plug-in wired power supply system (in this specification and the claims, the "plug-in wired power supply system" will be referred to as the "plug-in power supply system"), a method for constructing an electric vehicle power receiving circuit, and the electric vehicle. [Background technology]

[0003] Conventionally, two types of power supply methods for electric vehicles have been known: a plug-in power supply method and a wireless power supply method using a magnetic field resonance method (magnetic coupling method) or the like (in this specification and claims, a "wireless power supply method using a magnetic field resonance method (magnetic coupling method) or the like" is referred to as a "wireless power supply method").

[0004] Generally, when manufacturing electric vehicles, if a plug-in power supply system is adopted, they are designed as dedicated plug-in power supply vehicles (plug-in power supply dedicated vehicles: plug-in power supply EVs), while if a wireless power supply system is adopted, they are designed as dedicated wireless power supply vehicles (wireless power supply dedicated vehicles: wireless power supply EVs).

[0005] FIG. 1 is an explanatory diagram that schematically illustrates a conventional plug-in power supply system.

[0006] An electric vehicle using this plug-in power supply system is configured as a dedicated plug-in power supply vehicle equipped with a power outlet.

[0007] In FIG. 1, reference numeral 10 denotes a plug-in power feeder, which is a power feeding facility in a plug-in power feeding system, and reference numeral 20 denotes a dedicated plug-in power feeding vehicle.

[0008] The plug-in power supply device 10 includes a power supply plug 12 that is inserted into and removed from a power supply outlet 22 provided in a plug-in power supply dedicated vehicle 20 .

[0009] Here, the power supply outlet 22 is attached to the power supply port 23 of the plug-in power supply dedicated vehicle 20 so that the plug 12a provided on the power supply plug 12 can be inserted into the plug socket (plug receptacle) 22a of the power supply outlet 22 from outside the plug-in power supply dedicated vehicle 20, and the plug socket 22a of the power supply outlet 22 can be exposed to the outside of the plug-in power supply dedicated vehicle 20.

[0010] In addition, the plug-in power supply dedicated vehicle 20 is configured to have the above-mentioned power supply outlet 22, a battery 24 connected to the power supply outlet 22, an inverter 26 connected to the battery 24, and a motor 28 connected to the inverter 26 and serving as a drive source for the plug-in power supply dedicated vehicle 20.

[0011] The plug-in power supply device 10 and the plug-in dedicated power supply vehicle 20 are well-known technologies, and therefore detailed description thereof will be omitted.

[0012] In the plug-in power supply dedicated vehicle 20, power can be supplied from the plug-in power supply device 10 to the battery 24 of the plug-in power supply dedicated vehicle 20 by inserting the plug 12a of the power supply plug 12 of the plug-in power supply device 10 into the plug socket 22a of the power supply outlet 22 and attaching and connecting the power supply plug 12 to the power supply outlet 22.

[0013] FIG. 2 is an explanatory diagram that schematically illustrates a conventional wireless power supply system.

[0014] Electric vehicles using this wireless power supply system are configured as vehicles specifically designed for wireless power supply, equipped with a wireless communication converter and the like.

[0015] In FIG. 2, reference numeral 30 denotes a wireless power supply inverter, which is a power supply facility in a wireless power supply system, and reference numeral 40 denotes a dedicated wireless power supply vehicle.

[0016] The wireless power transfer inverter 30 is connected to a power transmission coil 32 installed on the road surface of a parking lot or the like, and is configured to be able to communicate wirelessly with a wireless communication converter 42 provided in a wirelessly power transfer dedicated vehicle 40.

[0017] The wirelessly powered vehicle 40 is configured to include the wireless communication converter 42 described above, a power receiving coil 44 that receives power transmitted from the wireless power transfer inverter 30 via the power transmitting coil 32, a rectifier 46 connected to the power receiving coil 44, a battery 48 connected to the rectifier 46, an inverter 50 connected to the battery 48, and a motor 52 connected to the inverter 50 and serving as a drive source for the wirelessly powered vehicle 40. The wireless communication converter 42 described above is also connected to the battery 48.

[0018] The wireless power transfer inverter 30 and the wireless power transfer dedicated vehicle 40 are well-known technologies, and therefore detailed description thereof will be omitted.

[0019] In the wirelessly powered vehicle 40, the power transmitted from the wirelessly powered inverter 30 via the power transmitting coil 32 is received by the power receiving coil 44, thereby enabling power to be supplied from the wirelessly powered inverter 30 to the battery 48 of the wirelessly powered vehicle 40.

[0020] As described above, electric vehicles include plug-in power supply-only vehicles that are compatible with the plug-in power supply system and wireless power supply-only vehicles that are compatible with the wireless power supply system.

[0021] Furthermore, power supply equipment for electric vehicles is divided into plug-in power supply units that support the plug-in power supply method and wireless power supply inverters that support the wireless power supply method.

[0022] For this reason, plug-in power supply-only vehicles cannot use wireless power supply inverters, which are power supply equipment compatible with wireless power supply methods, and also cannot use plug-in power feeders, which are power supply equipment compatible with plug-in power supply methods. This has caused a problem in that it is extremely inconvenient when selecting power supply equipment to power an electric vehicle.

[0023] In addition, the prior art that the applicant of the present application knew at the time of filing the patent application is not an invention related to an invention publicly known in a literature, and therefore there is no prior art literature information to be described in the present specification. Summary of the Invention [Problem to be solved by the invention]

[0024] The present invention has been made in consideration of the various problems in the conventional technology as described above, and has as its object to provide an electric vehicle power receiving circuit that can be installed in an existing plug-in dedicated power supply vehicle so that power can be supplied to the existing plug-in dedicated power supply vehicle by a wireless power supply method, a method for constructing an electric vehicle power receiving circuit, and an electric vehicle. [Means for solving the problem]

[0025] In order to achieve the above object, the electric vehicle power receiving circuit of the present invention has a simple configuration that can be easily attached to an existing plug-in power supply dedicated vehicle, and is equipped with a power receiving coil that receives power transmitted from a power transmitting coil, and supplies the power received by the power receiving coil to the battery of the plug-in power supply dedicated vehicle.

[0026] Therefore, according to the electric vehicle power receiving circuit of the present invention, by installing the electric vehicle power receiving circuit in a plug-in power supply dedicated vehicle, it becomes possible to supply power to the plug-in power supply dedicated vehicle by wireless power supply.

[0027] That is, in a plug-in power supply dedicated vehicle equipped with the electric vehicle power receiving circuit according to the present invention, power can be supplied not only using a plug-in power supply, which is a power supply facility compatible with the plug-in power supply method, but also using a wireless power supply inverter, which is a power supply facility compatible with the wireless power supply method.

[0028] Furthermore, the method for constructing a power receiving circuit for an electric vehicle according to the present invention involves installing the power receiving circuit for an electric vehicle according to the present invention in an existing plug-in dedicated power supply vehicle without disconnecting or adding to the existing electrical circuit in the existing plug-in dedicated power supply vehicle.

[0029] Therefore, according to the method for constructing a power receiving circuit for an electric vehicle of the present invention, the existing electrical circuits in an existing plug-in power supply-only vehicle do not need to be disconnected or added to, so a vehicle equipped with the power receiving circuit for an electric vehicle of the present invention will not be treated as a modified vehicle.

[0030] An electric vehicle according to the present invention is equipped with the electric vehicle power receiving circuit according to the present invention.

[0031] Therefore, the electric vehicle according to the present invention can be powered by both the plug-in power supply method and the wireless power supply method.

[0032] That is, the electric vehicle power receiving circuit according to the present invention is an electric vehicle power receiving circuit mounted on a plug-in power supply dedicated vehicle, and includes a wireless communication converter capable of communicating with a wireless power supply inverter, a receiving coil that receives power transmitted from the wireless power supply inverter via a transmitting coil, a rectifier connected to the receiving coil, a second power supply outlet that is attached to the power supply port where the existing power supply outlet was installed in place of the existing power supply outlet arranged in the plug-in power supply dedicated vehicle, a plug-in power supply plug that is connected to the second power supply outlet and is connectable to the existing power supply outlet, and a wireless power supply plug that is connected to the wireless communication converter and the rectifier and is connectable to the existing power supply outlet.

[0033] Furthermore, the electric vehicle power receiving circuit according to the present invention is the electric vehicle power receiving circuit according to the present invention described above, wherein when power is supplied from a plug-in power supply device to a battery of the dedicated plug-in power supply vehicle, the plug-in power supply plug is attached to the existing power supply outlet, and the power supply plug of the plug-in power supply device is attached to the second power supply outlet.

[0034] Furthermore, the electric vehicle power receiving circuit according to the present invention is the electric vehicle power receiving circuit according to the present invention described above, wherein when power is fed from the wireless power feeding inverter to the battery of the plug-in power feeding dedicated vehicle, the wireless power plug is attached to the existing power feeding outlet.

[0035] Furthermore, the electric vehicle power receiving circuit according to the present invention is the electric vehicle power receiving circuit according to the present invention described above, in which the second power feeding outlet, the plug-in power feeding plug, and the wireless power plug are arranged adjacent to each other at predetermined positions in the plug-in power feeding dedicated vehicle.

[0036] Furthermore, the electric vehicle power receiving circuit according to the present invention is the electric vehicle power receiving circuit according to the present invention described above, wherein the plug-in power feeding plug is manually switched to the existing power feeding outlet, or the wireless power feeding plug is manually switched to the existing power feeding outlet.

[0037] Furthermore, an electric vehicle power receiving circuit according to the present invention is an electric vehicle power receiving circuit mounted on a plug-in power supply-only vehicle, and includes: a wireless communication converter capable of communicating with a wireless power supply inverter; a power receiving coil that receives power transmitted from the wireless power supply inverter via a power transmitting coil; a rectifier connected to the power receiving coil; a second power supply outlet that is attached to a power supply port in place of an existing power supply outlet arranged in the plug-in power supply-only vehicle, in place of the existing power supply outlet arranged in the plug-in power supply-only vehicle; a plug-in power supply plug that is connected to the second power supply outlet and is connectable to the existing power supply outlet; a wireless power supply plug that is connected to the wireless communication converter and the rectifier and is connectable to the existing power supply outlet; a switching device that automatically switches between attachment of the plug-in power supply plug to the existing power supply outlet and attachment of the wireless power supply plug to the existing power supply outlet; and a switch that selects between attachment of the plug-in power supply plug to the existing power supply outlet and attachment of the wireless power supply plug to the existing power supply outlet, and causes the switching device to perform the selected operation.

[0038] Furthermore, the electric vehicle power receiving circuit according to the present invention is the electric vehicle power receiving circuit according to the present invention described above, wherein the existing power outlet, the plug-in power plug, the wireless power plug, and the switching device are arranged in the trunk of the plug-in dedicated power supply vehicle, and the switch is arranged on the dashboard of the plug-in dedicated power supply vehicle.

[0039] A method for constructing a power receiving circuit for an electric vehicle according to the present invention is a method for constructing a power receiving circuit for an electric vehicle to be mounted on a plug-in dedicated vehicle, comprising the steps of: removing an existing power feeding outlet disposed in a power feeding port of the plug-in dedicated vehicle from the power feeding port while maintaining an electrical connection without disconnecting an electrical circuit connected to the existing power feeding outlet or adding to the existing electrical circuit; relocating the power feeding outlet to a predetermined position in the plug-in dedicated vehicle; installing a wireless communication converter capable of communicating with a wireless power feeding inverter in the plug-in dedicated vehicle; and connecting a power receiving circuit from the wireless power feeding inverter to the plug-in dedicated vehicle. The plug-in dedicated power supply vehicle is equipped with a receiving coil that receives power transmitted from the plug-in dedicated power supply vehicle via a transmitting coil, a rectifier connected to the receiving coil, a second power supply outlet is installed in the power supply port of the plug-in dedicated power supply vehicle where the existing power supply outlet was installed, the plug-in dedicated power supply vehicle is equipped with a plug-in power supply plug that is connected to the second power supply outlet and can be connected to the existing power supply outlet, and the plug-in dedicated power supply vehicle is equipped with a wireless power supply plug that is connected to the wireless communication converter and the rectifier and can be connected to the existing power supply outlet.

[0040] A method for constructing a power receiving circuit for an electric vehicle according to the present invention is a method for constructing a power receiving circuit for an electric vehicle to be mounted on a plug-in power supply dedicated vehicle, comprising the steps of: removing an existing power feeding outlet disposed at a power feeding port of the plug-in power supply dedicated vehicle from the power feeding port while maintaining an electrical connection without disconnecting an electrical circuit connected to the existing power feeding outlet or adding to the existing electrical circuit; and relocating the power receiving circuit to a predetermined position in the plug-in power supply dedicated vehicle; installing a wireless communication converter capable of communicating with a wireless power feeding inverter in the plug-in power supply dedicated vehicle; installing a power receiving coil in the plug-in power supply dedicated vehicle that receives power transmitted from the wireless power feeding inverter via a power transmitting coil; The vehicle is equipped with a rectifier connected to the power receiving coil; a second power outlet is installed in the power supply port where the existing power outlet of the plug-in power supply dedicated vehicle was located; the plug-in power supply dedicated vehicle is equipped with a plug-in power supply plug that is connected to the second power outlet and can be connected to the existing power outlet; the plug-in power supply dedicated vehicle is equipped with a wireless power supply plug that is connected to the wireless communication converter and the rectifier and can be connected to the existing power outlet; the plug-in power supply dedicated vehicle is equipped with a switching device that automatically switches between attaching the plug-in power supply plug to the existing power outlet and attaching the wireless power supply plug to the existing power outlet; and the plug-in power supply dedicated vehicle is equipped with a switch that selects between attaching the plug-in power supply plug to the existing power outlet and attaching the wireless power supply plug to the existing power outlet and causes the switching device to perform the selected operation.

[0041] Furthermore, the electric vehicle according to the present invention is an electric vehicle that is powered by a battery and is designed as a plug-in power supply vehicle only, and is equipped with the electric vehicle power receiving circuit according to the present invention described above. [Effects of the Invention]

[0042] Since the present invention is configured as described above, by installing it in an existing plug-in dedicated vehicle, it has the excellent effect of enabling power to be supplied by a wireless power supply method even to an existing plug-in dedicated vehicle. [Brief explanation of the drawings]

[0043] [Figure 1] FIG. 1 is an explanatory diagram that schematically shows a conventional plug-in power supply system. [Figure 2] FIG. 2 is an explanatory diagram that schematically shows a conventional wireless power supply system. [Figure 3] FIG. 3 is an explanatory diagram that schematically shows the configuration of a plug-in power feed dedicated vehicle equipped with an electric vehicle power receiving circuit according to an embodiment of the present invention, and a power feeding method. [Figure 4] FIG. 4 is an explanatory diagram that schematically shows the configuration of the plug-in power supply dedicated vehicle shown in FIG. 3 at a relocated position. [Figure 5] FIG. 5 is an explanatory diagram that schematically shows the connection relationship in the plug-in power supply system using the plug-in power supply dedicated vehicle shown in FIG. [Figure 6] FIG. 6 is an explanatory diagram that schematically shows the connection relationship in a wireless power supply system for the plug-in power supply dedicated vehicle shown in FIG. [Figure 7] FIG. 7 is an explanatory diagram that schematically shows another example of the configuration for switching between the plug-in power supply system and the wireless power supply system in the plug-in power supply dedicated vehicle shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0044] Hereinafter, an example of an embodiment of a power receiving circuit for an electric vehicle, a method for constructing a power receiving circuit for an electric vehicle, and an electric vehicle according to the present invention will be described in detail with reference to the accompanying drawings.

[0045] In the following description, the same or corresponding components will be designated by the same reference numerals as appropriate, and detailed descriptions of their configurations and functions will be omitted as appropriate.

[0046] (I) Description of the configuration of a power receiving circuit for an electric vehicle according to an example of an embodiment of the present invention, a method for constructing a power receiving circuit for an electric vehicle according to an example of an embodiment of the present invention, and the configuration of an electric vehicle FIG. 3 is an explanatory diagram that schematically shows the configuration of a plug-in power supply dedicated vehicle equipped with an electric vehicle power receiving circuit according to an embodiment of the present invention, and a power supply method.

[0047] FIG. 4 is an explanatory diagram that schematically shows the configuration of the plug-in dedicated power supply vehicle shown in FIG. 3 at a relocated position.

[0048] As shown in FIG. 3, an electric vehicle power receiving circuit 100 according to an embodiment of the present invention is configured to be mountable on a plug-in power supply only vehicle 20, which is a type of electric vehicle.

[0049] Here, when installing the electric vehicle power receiving circuit 100 in the plug-in dedicated power supply vehicle 20, the existing power supply outlet 22 arranged in the power supply port 23 of the plug-in dedicated power supply vehicle 20 is relocated and fixed to a predetermined position in the plug-in dedicated power supply vehicle 20 (in this specification and the claims, the "predetermined position in the plug-in dedicated power supply vehicle 20" is referred to as the "relocated position").

[0050] When the existing power outlet 22 is relocated and fixed to the relocation position, the existing power outlet 22 is removed from the power inlet 23 and moved to the relocation position while maintaining the electrical connection without disconnecting the electric circuit connected to the existing power outlet 22, and is then arranged at the relocation position so that the plug socket 22a of the existing power outlet 22 is exposed.

[0051] The relocation position may be any position in the plug-in dedicated power supply vehicle 20, but may also be, for example, a luggage compartment 20a such as a trunk space in the rear of the plug-in dedicated power supply vehicle 20 as shown in FIG.

[0052] The electric vehicle power receiving circuit 100 is configured to include a wireless communication converter 102 (having a configuration that performs the same function as the wireless communication converter 42 described above) that can communicate with the wireless power transfer inverter 30, a receiving coil 104 (having a configuration that performs the same function as the receiving coil 44 described above) that receives power transferred from the wireless power transfer inverter 30 via the transmitting coil 32, a rectifier 106 (having a configuration that performs the same function as the rectifier 46 described above) connected to the receiving coil 104, a second power feeding outlet 108 that is attached to the power feeding port 23 of the plug-in power feeding dedicated vehicle 20 in place of the existing power feeding outlet 22, a plug-in power feeding plug 110 connected to the second power feeding outlet 108, and a wireless power feeding plug 112 that is connected to the wireless communication converter 102 and the rectifier 106.

[0053] The above-described components of the electric vehicle power receiving circuit 100 are mounted on the plug-in power feed only vehicle 20.

[0054] This electric vehicle power receiving circuit 100 can be installed in an existing plug-in dedicated power supply vehicle 20 without disconnecting the existing electrical circuit in the existing plug-in dedicated power supply vehicle 20 or adding to the existing electrical circuit.

[0055] Here, the second power supply outlet 108 has a configuration equivalent to that of the existing power supply outlet 22, and is attached to the power supply port 23 of the plug-in power supply dedicated vehicle 20 so that the plug 12a provided on the power supply plug 12 can be inserted into the plug socket (plug receptacle) 108a of the second power supply outlet 108 from outside the plug-in power supply dedicated vehicle 20, and the plug socket 108a of the second power supply outlet 108 can be exposed to the outside of the plug-in power supply dedicated vehicle 20.

[0056] The plug-in power supply plug 110 has a configuration equivalent to that of the power supply plug 12 and includes a plug 110 a that is inserted into the plug socket 22 a of the existing power supply outlet 22 .

[0057] In the plug-in power supply dedicated vehicle 20, the plug 110a of the plug-in power supply plug 110 is inserted into the plug socket 22a of the existing power supply outlet 22, and the plug-in power supply plug 110 is attached and connected to the existing power supply outlet 22, thereby ensuring an electrical connection between the battery 24 and the second power supply outlet 108 via the existing power supply outlet 22.

[0058] Similarly, the wireless power feeding plug 112 has a configuration equivalent to that of the power feeding plug 12 , and includes a plug 112 a that is inserted into the plug socket 22 a of the existing power feeding outlet 22 .

[0059] In the plug-in power supply-only vehicle 20, the plug 112a of the wireless power supply plug 112 is inserted into the plug socket 22a of the existing power supply outlet 22, and the wireless power supply plug 112 is attached and connected to the existing power supply outlet 22, thereby ensuring an electrical connection between the battery 24 and the rectifier 106 via the existing power supply outlet 22.

[0060] As shown in FIG. 4, the plug-in power supply plug 110 and the wireless power supply plug 112 are preferably disposed adjacent to the existing power supply outlet 22 at a relocated position such as the luggage compartment 20a.

[0061] By arranging the plug-in power supply plug 110 and the wireless power supply plug 112 adjacent to the existing power supply outlet 22, the user can easily switch between attaching the plug-in power supply plug 110 to the existing power supply outlet 22 and attaching the wireless power supply plug 112 using their fingers or the like at the desired timing.

[0062] (II) Description of the operation of an electric vehicle power receiving circuit and an electric vehicle according to an embodiment of the present invention In the configuration described above in (I), a case will be described in which power is supplied from the plug-in power supply device 10 to the battery 24 of the plug-in power supply dedicated vehicle 20 equipped with the electric vehicle power receiving circuit 100.

[0063] In this case, the plug-in power supply dedicated vehicle 20 equipped with the electric vehicle power receiving circuit 100 is driven to the plug-in power supply device 10, which is a power supply facility, and as shown in FIG. 5 , the plug 110a of the plug-in power supply plug 110 is inserted into the plug socket 22a of the existing power supply outlet 22 to attach and connect the plug-in power supply plug 110 to the existing power supply outlet 22, and the plug 12a of the power supply plug 12 in the plug-in power supply device 10 is inserted into the plug socket 108a of the second power supply outlet 108 to attach and connect the power supply plug 12 to the second power supply outlet 108.

[0064] This ensures an electrical connection from the plug-in power supply device 10 to the battery 24 of the plug-in power supply dedicated vehicle 20 , allowing power to be supplied from the plug-in power supply device 10 to the battery 24 of the plug-in power supply dedicated vehicle 20 .

[0065] Next, a case will be described in which power is supplied from the wireless power supply inverter 30 to the battery 24 of the plug-in power supply dedicated vehicle 20 equipped with the electric vehicle power receiving circuit 100.

[0066] In this case, the plug-in power supply dedicated vehicle 20 equipped with the electric vehicle power receiving circuit 100 is moved to the wireless power supply inverter 30, which is the power supply equipment, and as shown in FIG. 6, the plug 112a of the wireless power plug 112 is inserted into the plug socket 22a of the existing power supply outlet 22, and the wireless power supply plug 112 is attached and connected to the existing power supply outlet 22.The power transmitted from the wireless power supply inverter 30 via the power transmitting coil 32 is received by the power receiving coil 44, and power can be supplied from the wireless power supply inverter 30 to the battery 24 of the plug-in power supply dedicated vehicle 20.

[0067] That is, in a plug-in power supply dedicated vehicle 20 equipped with an electric vehicle power receiving circuit 100, the above-mentioned rectifier 106 is connected to the battery 24 via a wireless power supply plug 112 attached to an existing power supply outlet 22, so that the power received by the power receiving coil 44 is rectified by the rectifier 106, and the rectified and output power by the rectifier 106 is supplied to the battery 28.

[0068] That is, in a plug-in power supply dedicated vehicle 20 equipped with an electric vehicle power receiving circuit 100, high frequency power wirelessly supplied from a power transmitting coil 32 is received by a power receiving coil 104, and the high frequency power received by the power receiving coil 104 is rectified through a rectifier 106, and then supplied to a battery 24 connected to an existing power supply outlet 22 via a wireless power supply plug 112 attached to the existing power supply outlet 22.

[0069] (III) Explanation of the power receiving circuit for an electric vehicle, a method for constructing the power receiving circuit for an electric vehicle, and the effects of the electric vehicle according to an embodiment of the present invention The electric vehicle power receiving circuit 100 described above has a simple overall configuration, and can therefore be easily attached to an existing plug-in dedicated power feed vehicle 20.

[0070] Furthermore, when installing the electric vehicle power receiving circuit 100 in an existing plug-in dedicated power supply vehicle 20, the electric vehicle power receiving circuit 100 can be installed in the existing plug-in dedicated power supply vehicle 20 without disconnecting or adding to the existing electrical circuits in the existing plug-in dedicated power supply vehicle 20, so the plug-in dedicated power supply vehicle 20, which is a vehicle equipped with the electric vehicle power receiving circuit 100, is not treated as a modified vehicle.

[0071] Furthermore, according to the plug-in power supply dedicated vehicle 20 equipped with the electric vehicle power receiving circuit 100, it becomes possible to supply power to the battery 24 of the plug-in power supply dedicated vehicle 20 from both the plug-in power supply device 10, which is a power supply facility in the plug-in power supply method, and the wireless power supply inverter 30, which is a power supply facility in the wireless power supply method.

[0072] That is, in a plug-in power supply dedicated vehicle 20 equipped with an electric vehicle power receiving circuit 100, the power supply plug 12 of the plug-in power supply device 10 is attached and connected to the second power supply outlet 108, and the plug-in power supply plug 110 is attached and connected to the existing power supply outlet 22, thereby enabling power to be supplied from the plug-in power supply device 10 to the battery 24 of the plug-in power supply dedicated vehicle 20.

[0073] Furthermore, in a plug-in dedicated vehicle 20 equipped with the electric vehicle power receiving circuit 100, by attaching and connecting a wireless power feeding plug 112 to an existing power feeding outlet 22, high-frequency power fed wirelessly from a power transmitting coil 32 connected to the wireless power feeding inverter 30 can be received by the power receiving coil 104, thereby making it possible to feed power from the wireless power feeding inverter 30 to the battery 24 of the plug-in dedicated vehicle 20.

[0074] Therefore, when power is supplied to the plug-in power supply dedicated vehicle 20 equipped with the electric vehicle power receiving circuit 100, the user of the plug-in power supply dedicated vehicle 20 can freely select either the plug-in power supply device 10, which is a power supply device for the plug-in power supply method, or the wireless power supply inverter 30, which is a power supply device for the wireless power supply method, as the power supply device.

[0075] Furthermore, the electric vehicle power receiving circuit 100 is highly resource efficient because it can utilize the existing charging system (including the power outlet 22, battery 24, inverter 26, motor 28, etc.) installed in the conventional plug-in power supply only vehicle 20.

[0076] (IV) Other embodiments It should be noted that the above-described embodiment is merely an example, and the present invention can be embodied in various other forms. In other words, the present invention is not limited to the above-described embodiment, and various omissions, substitutions, or modifications can be made as appropriate within the scope of the gist of the present invention.

[0077] For example, the above-described embodiment may be modified as described in the following (IV-1) to (IV-4).

[0078] (IV-1) In the above embodiment, the relocation position is described as a luggage compartment 20a such as a trunk space at the rear of the plug-in power supply dedicated vehicle 20, but it goes without saying that the relocation position is not limited to this.

[0079] For example, by relocating the plug-in power supply plug 110 to a position in the interior space of the plug-in power supply dedicated vehicle 20, such as on the dashboard on the driver's seat side, the driver can use his or her fingers to switch between attaching the plug-in power supply plug 110 to the existing power supply outlet 22 and attaching the wireless power supply plug 112 to the existing power supply outlet 22 without moving from the driver's seat.

[0080] (IV-2) In the above embodiment, a method of manually switching between attaching the plug-in power supply plug 110 to an existing power supply outlet 22 and attaching the wireless power supply plug 112 to an existing power supply outlet 22 by the user using his / her fingers or the like has been described. However, it goes without saying that such a switching method is not limited to this.

[0081] For example, as shown in FIG. 7 , a switching device 200 that automatically switches between attaching the plug-in power feeding plug 110 to the existing power feeding outlet 22 and attaching the wireless power feeding plug 112 to the existing power feeding outlet 22 by moving the plug-in power feeding plug 110 and the wireless power feeding plug 112 in the directions of arrows X and Y, respectively, may be disposed at a relocation position, and a switch 202 that selects between attaching the plug-in power feeding plug 110 to the existing power feeding outlet 22 and attaching the wireless power feeding plug 112 to the existing power feeding outlet 22 and causes the switching device 200 to perform the selected operation may be provided on a dashboard 20b, such as on the driver's seat side.

[0082] In this way, the driver can switch between attaching the plug-in power supply plug 110 to the existing power supply outlet 22 and attaching the wireless power supply plug 112 to the existing power supply outlet 22 by simply operating the switch 202 provided on the dashboard 20b, through the operation of the switching device 200.

[0083] Furthermore, the plug-in power supply dedicated vehicle 20 may be provided with sensors that detect the plug-in power supply device 10 and the wireless power supply inverter 30 as detection targets, and when the sensors detect either the plug-in power supply device 10 or the wireless power supply inverter 30 as detection targets, the switching device 200 may automatically switch between attaching the plug-in power supply plug 110 or the wireless power supply plug 112 to the existing power supply outlet 22 depending on the detected target.

[0084] (IV-3) In the above-described embodiments, detailed explanations regarding plug-in dedicated vehicles have been omitted, but plug-in dedicated vehicles naturally include plug-in hybrid vehicles.

[0085] (IV-4) It goes without saying that the above-described embodiment and the embodiments and modifications shown in (IV-1) to (IV-3) above may be combined as appropriate. [Industrial Applicability]

[0086] When applied to a plug-in power supply-only vehicle, the present invention makes it possible to supply power using a plug-in power supply, which is power supply equipment compatible with the plug-in power supply method, and also makes it possible to supply power using a wireless power supply inverter, which is power supply equipment compatible with the wireless power supply method, which is extremely useful when supplying power to the battery of a plug-in power supply-only vehicle. [Explanation of symbols]

[0087] 10 Plug-in Power Supply 12 Power plug 12a plug 20 Plug-in power supply vehicle 20a Luggage compartment 20b Dashboard 22 Power outlet (existing power outlet) 22a Plug socket (plug receptacle) 23 Power supply port 24 Battery 26 inverter 28 Motor 30 Wireless power inverter 32 Transmission coil 40 Wireless power supply dedicated vehicle 42 Wireless communication converter 44 receiving coil 46 Rectifier 48 Battery 50 inverters 52 Motor 100 Electric vehicle power receiving circuit 102 Wireless Communication Converter 104 receiving coil 106 Rectifier 108 Second power outlet 108a Plug socket (plug receptacle) 110 Plug-in power supply plug 110a plug 112 Wireless power plug 112a plug 200 Switching Device 202 Switch

Claims

1. A power receiving circuit for an electric vehicle mounted on a plug-in power supply dedicated vehicle, a wireless communication converter capable of communicating with the wireless power inverter; a power receiving coil that receives power transmitted from the wireless power transfer inverter via a power transmitting coil; a rectifier connected to the receiving coil; a second power outlet that is attached to a power port where an existing power outlet provided in a plug-in dedicated vehicle was provided, in place of the existing power outlet; a plug-in power supply plug that is connected to the second power supply outlet and is connectable to the existing power supply outlet; a wireless power supply plug that is connected to the wireless communication converter and the rectifier and is connectable to the existing power supply outlet; 1. A power receiving circuit for an electric vehicle, comprising:

2. 2. The electric vehicle power receiving circuit according to claim 1, When power is supplied from the plug-in power supply device to the battery of the plug-in power supply dedicated vehicle, The plug-in power supply plug is attached to the existing power supply outlet, and the power supply plug of the plug-in power supply device is attached to the second power supply outlet.

1. A power receiving circuit for an electric vehicle.

3. 2. The electric vehicle power receiving circuit according to claim 1, When power is supplied from the wireless power inverter to the battery of the plug-in power supply dedicated vehicle, Attach the wireless power plug to the existing power outlet.

1. A power receiving circuit for an electric vehicle.

4. 4. The electric vehicle power receiving circuit according to claim 1, 2 or 3, The second power outlet, the plug-in power plug, and the wireless power plug are arranged adjacent to each other at preset positions in the plug-in power supply dedicated vehicle.

1. A power receiving circuit for an electric vehicle.

5. 5. The electric vehicle power receiving circuit according to claim 4, The plug-in power supply plug is manually attached to the existing power supply outlet, or the wireless power supply plug is manually attached to the existing power supply outlet.

1. A power receiving circuit for an electric vehicle.

6. A power receiving circuit for an electric vehicle mounted on a plug-in power supply dedicated vehicle, a wireless communication converter capable of communicating with the wireless power inverter; a power receiving coil that receives power transmitted from the wireless power transfer inverter via a power transmitting coil; a rectifier connected to the receiving coil; a second power outlet that is attached to a power port where an existing power outlet provided in a plug-in dedicated vehicle was provided, in place of the existing power outlet; a plug-in power supply plug that is connected to the second power supply outlet and is connectable to the existing power supply outlet; a wireless power supply plug connected to the wireless communication converter and the rectifier and connectable to the existing power supply outlet; a switching device that automatically switches between attaching the plug-in power supply plug to the existing power supply outlet and attaching the wireless power supply plug to the existing power supply outlet; a switch that selects between attachment of the plug-in power supply plug to the existing power supply outlet and attachment of the wireless power supply plug to the existing power supply outlet, and causes the switching device to perform the selected operation; 1. A power receiving circuit for an electric vehicle, comprising:

7. 7. The electric vehicle power receiving circuit according to claim 6, the existing power outlet, the plug-in power plug, the wireless power plug, and the switching device are arranged in a trunk of the plug-in dedicated power supply vehicle; The switch is disposed on the dashboard of the plug-in power supply dedicated vehicle.

1. A power receiving circuit for an electric vehicle.

8. A method for constructing a power receiving circuit for an electric vehicle mounted on a plug-in power supply dedicated vehicle, comprising: An existing power outlet disposed in a power supply port of a plug-in dedicated vehicle is removed from the power supply port while maintaining an electrical connection without disconnecting an electrical circuit connected to the existing power outlet or adding to the existing electrical circuit, and then moved to a predetermined position in the plug-in dedicated vehicle; The plug-in power supply dedicated vehicle is equipped with a wireless communication converter capable of communicating with a wireless power supply inverter, a power receiving coil that receives power transmitted from the wireless power transfer inverter via a power transmitting coil is mounted on the plug-in power transfer dedicated vehicle; The plug-in dedicated vehicle is equipped with a rectifier connected to the power receiving coil, a second power outlet is mounted in the power port where the existing power outlet of the plug-in power supply dedicated vehicle was installed; the plug-in power supply dedicated vehicle is equipped with a plug-in power supply plug that is connected to the second power supply outlet and can be connected to the existing power supply outlet; The plug-in power supply dedicated vehicle is equipped with a wireless power supply plug that is connected to the wireless communication converter and the rectifier and can be connected to the existing power supply outlet. A method for constructing a power receiving circuit for an electric vehicle.

9. A method for constructing a power receiving circuit for an electric vehicle mounted on a plug-in power supply dedicated vehicle, comprising: An existing power outlet disposed in a power supply port of a plug-in dedicated vehicle is removed from the power supply port while maintaining an electrical connection without disconnecting an electrical circuit connected to the existing power outlet or adding to the existing electrical circuit, and then moved to a predetermined position in the plug-in dedicated vehicle; The plug-in power supply dedicated vehicle is equipped with a wireless communication converter capable of communicating with a wireless power supply inverter, a power receiving coil that receives power transmitted from the wireless power transfer inverter via a power transmitting coil is mounted on the plug-in power transfer dedicated vehicle; The plug-in dedicated vehicle is equipped with a rectifier connected to the power receiving coil, a second power outlet is mounted in the power port where the existing power outlet of the plug-in power supply dedicated vehicle was installed; the plug-in power supply dedicated vehicle is equipped with a plug-in power supply plug that is connected to the second power supply outlet and can be connected to the existing power supply outlet; The plug-in power supply dedicated vehicle is equipped with a wireless power supply plug that is connected to the wireless communication converter and the rectifier and can be connected to the existing power supply outlet; The plug-in power supply dedicated vehicle is equipped with a switching device that automatically switches between attaching the plug-in power supply plug to the existing power supply outlet and attaching the wireless power supply plug to the existing power supply outlet; The plug-in power supply dedicated vehicle is equipped with a switch that selects between attaching the plug-in power supply plug to the existing power supply outlet and attaching the wireless power supply plug to the existing power supply outlet, and causes the switching device to perform the selected operation. A method for constructing a power receiving circuit for an electric vehicle.

10. In battery-powered electric vehicles, An electric vehicle designed as a plug-in power supply only vehicle, A vehicle equipped with the power receiving circuit for an electric vehicle according to claim 1, 2 or 3. An electric vehicle characterized by:

11. In battery-powered electric vehicles, An electric vehicle designed as a plug-in power supply only vehicle, A vehicle equipped with the power receiving circuit for an electric vehicle according to claim 6 or 7. An electric vehicle characterized by:

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