Apparatus and method for wirelessly charging electric vehicle

Abstract

The present invention relates to a wireless charging device for supplying wireless charging to an electric vehicle. The wireless charging device for an electric vehicle comprises: a supply equipment communication controller (SECC) for communicating with an electric vehicle communication controller (EVCC) included in the electric vehicle; a power conversion unit for receiving power from an external power network and converting the received power; a power transmitting unit for transmitting the converted power to the electric vehicle; and a control unit for allowing the supply equipment communication controller to receive a user request, and controlling the power conversion unit on the basis of the received user request.

Description

Wireless charging device and method for electric vehicles

[0001] The present invention relates to a wireless charging device and method for an electric vehicle, and more particularly, to a wireless charging device and method for an electric vehicle based on communication between an external server or an electric vehicle and a charging device communication controller.

[0002] Electric vehicles (EVs), a recent development trend, use batteries to power their motors. Compared to conventional gasoline-powered vehicles, EVs offer the following advantages: fewer emissions of air pollutants like exhaust fumes, fewer breakdowns, longer lifespans, and simpler operation.

[0003] An electric vehicle charging system uses power from the power grid to charge the batteries in electric vehicles. These systems can take various forms depending on the type of electric vehicle. For example, an electric vehicle charging system may be a conductive charging system using cables. Alternatively, an electric vehicle charging system may be a contactless wireless power transfer system.

[0004] In particular, the wireless power transfer system may include a static wireless power transfer (S-WPT) system and a dynamic wireless power transfer (D-WPT) system. The dynamic wireless power transfer system may be a system that supplies wireless charging to an electric vehicle in a driving state using an electric vehicle charging road.

[0005] Meanwhile, the environment (temperature, humidity, disaster situations, etc.) in which wireless charging of electric vehicles is performed can significantly impact the efficiency and safety of wireless charging. For example, in the event of a disaster such as heavy rain, earthquake, or fire, wireless charging of electric vehicles may need to be halted to prevent secondary damage.

[0006] Alternatively, while dynamic wireless charging of an electric vehicle is being performed on an electric vehicle charging road, the user may wish to interrupt the wireless charging for a specific reason. Alternatively, the user may wish to resume the interrupted wireless charging.

[0007] The present invention can provide a wireless charging device and method capable of supplying wireless charging to an electric vehicle based on a user request.

[0008] The present invention can provide a wireless charging device and method capable of supplying wireless charging to an electric vehicle based on information about a charging environment.

[0009] In order to solve the problem of the present invention, a wireless charging device for supplying wireless charging to an electric vehicle is provided, comprising: a Supply Equipment Communication Controller (SECC) for communicating with an Electric Vehicle Communication Controller (EVCC) included in the electric vehicle; a power conversion unit for receiving power from an external power grid and converting the supplied power; a power transmission unit for transmitting the converted power to the electric vehicle; and a control unit for causing the charging device communication controller to receive a user request and controlling the power conversion unit based on the received user request.

[0010] According to one embodiment of the present invention, the user request may be input by the user through an input unit provided in the electric vehicle and transmitted through the electric vehicle communication controller.

[0011] According to one embodiment of the present invention, the user request may be a request to stop charging or a request to resume charging.

[0012] According to one embodiment of the present invention, the control unit can control the power conversion unit to prevent the power conversion unit from converting the supplied power when the user request is a request to stop charging.

[0013] According to one embodiment of the present invention, the control unit can control the power conversion unit so that the power conversion unit can convert the supplied power when the user request is a request to resume charging.

[0014] According to one embodiment of the present invention, the control unit can control the power conversion unit so that the power conversion unit can convert the supplied power when communication between the charging device communication controller and the electric vehicle communication controller is terminated.

[0015] In order to solve the problem of the present invention, a wireless charging method for supplying wireless charging to an electric vehicle using a wireless charging device including a Supply Equipment Communication Controller (SECC), a power conversion unit, and a power transmission unit, the method comprising: a step of causing the SECC to establish communication with an Electric Vehicle Communication Controller (EVCC) included in the electric vehicle; a step of causing the wireless charging device to be paired with the electric vehicle through the established communication; a step of causing the power conversion unit to convert power supplied from an external power grid; a step of causing the power transmission unit to transmit the converted power to the electric vehicle; a step of receiving a user request through the SECC; a step of controlling the power conversion unit based on the received user request; and a step of causing the SECC to terminate communication with the electric vehicle communication controller.

[0016] According to one embodiment of the present invention, the method further includes a step of causing the charging device communication controller to receive a user request from the electric vehicle communication controller; wherein the user request may be input from a user through an input unit provided in the electric vehicle and transmitted through the electric vehicle communication controller.

[0017] According to one embodiment of the present invention, the user request may be a request to stop charging or a request to resume charging.

[0018] According to one embodiment of the present invention, the step of controlling the power conversion unit based on the received user request may further include a step of preventing the power conversion unit from converting the supplied power if the user request is a request to stop charging.

[0019] According to one embodiment of the present invention, the step of controlling the power conversion unit based on the received user request may further include a step of enabling the power conversion unit to convert the supplied power when the user request is a request to resume charging.

[0020] According to one embodiment of the present invention, when communication between the charging device communication controller and the electric vehicle communication controller is terminated, the method may further include a step of controlling the power conversion unit so that the power conversion unit can convert the supplied power.

[0021] In order to solve the problem of the present invention, a wireless charging device for supplying wireless charging to an electric vehicle is provided, comprising: a Supply Equipment Communication Controller (SECC) for communicating with an Electric Vehicle Communication Controller (EVCC) included in the electric vehicle; a power conversion unit for receiving power from an external power grid and converting the supplied power; a power transmission unit for transmitting the converted power to the electric vehicle; and a control unit for controlling the power conversion unit based on information on a charging environment received from an external server through the charging device communication controller.

[0022] According to one embodiment of the present invention, the device further includes a compensation network, and the control unit can control the compensation network based on information about the charging environment.

[0023] According to one embodiment of the present invention, the information about the charging environment may be at least one piece of information selected from the group consisting of information about disasters and emergency situations, information about weather and the environment, information about physical environmental conditions, and information about safety and security.

[0024] In order to solve the problem of the present invention, a wireless charging method for supplying wireless charging to an electric vehicle using a wireless charging device including a Supply Equipment Communication Controller (SECC), a power conversion unit, and a power transmission unit, the method comprising: a step of allowing the SECC to establish communication with an Electric Vehicle Communication Controller (EVCC) included in the electric vehicle; a step of allowing the wireless charging device to be paired with the electric vehicle through the established communication; a step of allowing the power conversion unit to convert power supplied from an external power grid; a step of allowing the power transmission unit to transmit the converted power to the electric vehicle; a step of receiving information on a charging environment from an external server through the SECC; and a step of controlling the power conversion unit based on the received information on the charging environment.

[0025] According to one embodiment of the present invention, the method may further include a step of controlling a compensation network provided in the wireless charging device based on information about the charging environment.

[0026] According to one embodiment of the present invention, the information about the charging environment may be at least one piece of information selected from the group consisting of information about disasters and emergency situations, information about weather and the environment, information about physical environmental conditions, and information about safety and security.

[0027] The wireless charging device and method for an electric vehicle according to the present invention can supply wireless charging to an electric vehicle based on a user request received from the electric vehicle.

[0028] The wireless charging device and method for an electric vehicle according to the present invention can supply wireless charging to an electric vehicle based on information about a charging environment received from an external server.

[0029] FIG. 1 illustrates a wireless charging device, an electric vehicle, an external server, and a power grid according to the present invention.

[0030] Figure 2 is a schematic diagram showing a wireless charging device according to the present invention.

[0031] Figure 3 is a schematic diagram showing an electric vehicle according to the present invention.

[0032] Figure 4 is a conceptual diagram for explaining how a wireless charging device according to the present invention charges an electric vehicle.

[0033] Figure 5 is a flowchart showing a wireless charging method for an electric vehicle according to the present invention.

[0034] Figure 6 is a conceptual diagram for explaining dynamic wireless charging through an electric vehicle charging road according to the present invention.

[0035] Figure 7 is a flowchart illustrating the relationship between a user request and a standby step according to the present invention.

[0036] FIG. 8 is a conceptual diagram illustrating a wireless charging device according to the present invention charging an electric vehicle based on communication with an external server.

[0037] FIG. 9 is a conceptual diagram illustrating a wireless charging device according to the present invention charging an electric vehicle based on a user request and / or communication with an external server.

[0038] Below, a detailed description is given of a wireless charging device and method for an electric vehicle according to an embodiment of the present invention, with reference to the attached drawings. However, the attached drawings are provided solely to facilitate the disclosure of the present invention, and those skilled in the art will readily appreciate that the scope of the present invention is not limited to the scope of the attached drawings.

[0039] FIG. 1 illustrates a wireless charging device, an electric vehicle, an external server, and a power grid according to the present invention.

[0040] As illustrated in FIG. 1, the wireless charging device (100) can receive power from an external power grid (400). For example, the power grid (400) may be at least one power grid selected from the group including a national grid, a smart grid, a microgrid, and an urban grid, but is not limited thereto.

[0041] As illustrated in FIG. 1, a wireless charging device (100) can communicate with an electric vehicle (200).

[0042] Specifically, an electric vehicle (200) may be an automobile as defined in 49 CFR (Code of Federal Regulations) 523.3, etc. An electric vehicle may be capable of highway use and may be powered by electricity supplied from an onboard energy storage device, such as a rechargeable battery, from an external power source. The power source may include a residential or public power service, or a generator that utilizes onboard fuel.

[0043] In addition, the electric vehicle (200) may be an electric car, an electric automobile, an ERV (electric road vehicle), a PV (plug-in vehicle), or an xEV (plug-in vehicle). An xEV may be referred to or classified as a BEV (plug-in all-electric vehicle or battery electric vehicle), a PEV (plug-in electric vehicle), an HEV (hybrid electric vehicle), an HPEV (hybrid plug-in electric vehicle), a PHEV (plug-in hybrid electric vehicle), etc.

[0044] Additionally, the electric vehicle (200) may be a plug-in electric vehicle (PEV). A plug-in electric vehicle may be referred to as an electric vehicle that recharges the vehicle's primary battery by connecting to the power grid.

[0045] Additionally, the electric vehicle (200) may be a light-duty plug-in electric vehicle. A light-duty plug-in electric vehicle may refer to a vehicle with three or four wheels that is propelled by an electric motor powered by a rechargeable battery or other energy source, primarily intended for use on public streets, roads, and highways.

[0046] Specifically, the wireless charging device (100) can communicate with the electric vehicle (200) through a predetermined method. For example, the wireless charging device (100) can communicate with the electric vehicle (200) through at least one method selected from the group including wireless local area network (WLAN), near field communication (NFC), Bluetooth, power line communication (PLC), cellular network (4G / 5G), infrared communication, and controller area network (CAN) communication. However, the present invention is not limited thereto.

[0047] As illustrated in FIG. 1, the wireless charging device (100) can perform wireless charging of the electric vehicle (200) based on communication with the electric vehicle (200). Wireless charging refers to a charging method that supplies power to the electric vehicle (200) without using a cable to charge the battery of the electric vehicle (200). For example, the wireless charging may use at least one charging method selected from the group including inductive wireless charging, magnetic resonance charging, dynamic inductive charging based on magnetic induction, capacitive wireless charging, wireless power transfer via microwave or laser, radio frequency wireless charging, ultrasonic wireless charging, and optical wireless charging. However, the present invention is not limited thereto.

[0048] As illustrated in FIG. 1, the wireless charging device (100) can communicate with an external server (300). Specifically, the wireless charging device (100) can perform wireless charging of an electric vehicle (200) based on communication with the external server (300). Details regarding the external server (300) will be described later.

[0049] Figure 2 is a schematic diagram illustrating a wireless charging device according to the present invention. Specifically, Figure 2 (a) illustrates the configuration of the wireless charging device according to the present invention. In addition, Figure 2 (b) illustrates the configuration of the power conversion unit according to the present invention.

[0050] As shown in (a) of FIG. 2, the wireless charging device (100) may include a supply equipment communication controller (SECC) (110), a control unit (120), a power conversion unit (130), and a power transmission unit (140).

[0051] Specifically, the charging device communication controller (110) is for communicating with the electric vehicle communication controller (EVCC) of the electric vehicle.

[0052] Specifically, the power conversion unit (130) is for receiving power from an external power grid (400) and converting the received power.

[0053] Specifically, the power transmission unit (140) is for transmitting the converted power to the electric vehicle (200).

[0054] Specifically, the control unit (120) enables the charging device communication controller (110) to communicate with the electric vehicle (200) and controls the power conversion unit (130). More specifically, the control unit (120) may include a processor (not shown) and a memory device (not shown). The processor may perform an operation to control the charging device communication controller (110) and the power conversion unit (130). The memory device may record a program to enable the processor to perform an operation to control the charging device communication controller (110) and the power conversion unit (130).

[0055] As illustrated in (b) of FIG. 2, the power conversion unit (130) may include at least one inverter. Specifically, the power conversion unit (130) may include an AC / DC inverter (131), a DC / DC inverter (132), and a DC / AC inverter (133). More specifically, the AC / DC inverter (131) may convert AC power supplied from the power grid (400) into DC power. In addition, the DC / DC inverter (132) may adjust the voltage of the DC power converted by the AC / DC inverter (131). In addition, the DC / AC inverter (133) may convert DC power, the voltage of which is adjusted by the DC / DC inverter (132), into AC power.

[0056] Figure 3 is a schematic diagram illustrating an electric vehicle according to the present invention. Specifically, Figure 3 (a) illustrates the configuration of the electric vehicle according to the present invention. Furthermore, Figure 3 (b) illustrates the configuration of the power conversion unit according to the present invention.

[0057] As shown in (a) of FIG. 3, an electric vehicle (200) may include an electric vehicle communication controller (EVCC) (210), a control unit (220), a power conversion unit (230), a power reception unit (240), a battery (250), and a motor (260).

[0058] Specifically, the electric vehicle communication controller (210) is for communicating with the charging device communication controller (110).

[0059] Specifically, the power receiving unit (240) is for receiving power from the power transmitting unit (140).

[0060] Specifically, the power conversion unit (230) is for converting AC power received by the power reception unit (240). The converted power can be transmitted to the battery (250). In addition, the power conversion unit (230) is for converting power stored in the battery (250). The converted power can be supplied to the motor (260).

[0061] Specifically, the control unit (220) enables the electric vehicle communication controller (210) to communicate with the wireless charging device (100) and to control the power conversion unit (230). More specifically, the control unit (220) may include a processor (not shown) and a memory device (not shown). The processor may perform an operation to control the electric vehicle communication controller (210) and the power conversion unit (230). The memory device may record a program to enable the processor to perform an operation to control the electric vehicle communication controller (210) and the power conversion unit (230).

[0062] Specifically, the battery (250) can store power for driving the electric vehicle (200). More specifically, the battery (250) can receive power from the power conversion unit (230) and store the received power. In addition, the battery (250) can supply power to the motor (250) via the power conversion unit (230).

[0063] As illustrated in (a) of FIG. 3, the electric vehicle (200) may further include an input unit (270). Specifically, the input unit (270) is configured to receive a user request from the user. More specifically, the user request may be a request to stop charging or a request to resume charging. Further details regarding the user request will be described later.

[0064] As illustrated in (b) of FIG. 3, the power conversion unit (230) may include at least one inverter. Specifically, the power conversion unit (230) may include an AC / DC inverter (231), a DC / DC inverter (232), and a DC / AC inverter (233). More specifically, the AC / DC inverter (231) may convert AC power received from the power receiving unit (240) into DC power. In addition, the DC / DC inverter (232) may adjust the voltage of the DC power converted by the AC / DC inverter (231). In addition, the DC / DC inverter (232) may adjust the voltage of the DC power stored in the battery (250). In addition, the DC / AC inverter (233) may convert DC power, the voltage of which is adjusted by the DC / DC inverter (232), into AC power. Additionally, the DC / AC inverter (233) can convert direct current power stored in the battery (250) into alternating current power.

[0065] Figure 4 is a conceptual diagram illustrating a wireless charging device according to the present invention charging an electric vehicle. Figure 5 is a flowchart illustrating a method for wirelessly charging an electric vehicle according to the present invention.

[0066] As illustrated in FIGS. 4 and 5, the wireless charging method of an electric vehicle (200) includes a step (S100) of establishing communication between a charging device communication controller (110) of a wireless charging device (100) and an electric vehicle communication controller (210) of an electric vehicle (200), a step (S200) of pairing the wireless charging device (100) with the electric vehicle (200) through the established communication, a charging session (S300), and a step (S400) of terminating communication between the charging device communication controller (110) and the electric vehicle communication controller (210).

[0067] According to the present invention, step (S100) may be included in step (S200) and may be performed integrally with step (S200). However, this is not a limitation.

[0068] According to the present invention, step (S100) may include a step of identifying whether the electric vehicle communication controller (210) is capable of communicating with the charging device communication controller (110) via the charging device communication controller (110). For example, the control unit (120) may identify whether the electric vehicle (200) is located within a range where wireless charging can be supplied by the wireless charging device (100) via the charging device communication controller (110).

[0069] According to the present invention, step (S200) may include an alignment step, an authentication step, a secure communication step, and a charging parameter setting step between a wireless charging device (100) and an electric vehicle (200).

[0070] According to the present invention, the charging session (S300) may include a step of causing the power conversion unit (130) to receive power from an external power grid (400), a step of causing the power conversion unit (130) to convert power supplied from the external power grid, and a step of causing the power transmission unit (140) to transmit the converted power to the electric vehicle (200).

[0071] Figure 6 is a conceptual diagram for explaining dynamic wireless charging through an electric vehicle charging road according to the present invention.

[0072] According to the present invention, the electric vehicle charging road (500) is for dynamic wireless charging of an electric vehicle (200). Dynamic wireless charging refers to a charging technology that enables an electric vehicle (200) to receive power wirelessly even while it is in motion.

[0073] As illustrated in FIG. 6, an electric vehicle charging road (500) may be composed of at least one wireless charging device (100). The detailed configuration of the wireless charging device (100) is as described above.

[0074] As illustrated in FIG. 6, an electric vehicle charging road (500) may be composed of a plurality of wireless charging devices (100). The plurality of wireless charging devices (100) may be integrated with each other, but are not limited thereto.

[0075] As illustrated in FIG. 6, the wireless charging device (100) included in the electric vehicle charging road (500) may each be equipped with a charging device communication controller (110) and a control unit (120). Alternatively, at least some of the multiple wireless charging devices (100) may be configured to share the communication controller (110) and the control unit (120). However, this is not a limitation.

[0076] According to the present invention, when an electric vehicle (200) is driven on an electric vehicle charging road (500), the electric vehicle (200) can receive wireless charging from the electric vehicle charging road (500). Specifically, the electric vehicle (200) can receive wireless charging from at least one wireless charging device (100) included in the electric vehicle charging road (500).

[0077] According to the present invention, a wireless charging device (100) included in an electric vehicle charging road (500) can supply wireless charging to an electric vehicle (200) through the wireless charging method of the electric vehicle described above with reference to FIGS. 4 and 5. Specifically, when an electric vehicle (200) is located at a predetermined point on an electric vehicle charging road (500), a wireless charging device (100) corresponding to the predetermined point can supply wireless charging to the electric vehicle (200). The wireless charging device (100) corresponding to the predetermined point may refer to a wireless charging device (100) buried in the electric vehicle charging road (500) at the predetermined point where the electric vehicle (200) is located. Alternatively, the wireless charging device (100) corresponding to the predetermined point may refer to a wireless charging device (100) capable of establishing communication with an electric vehicle (200) located at the predetermined point through a charging device communication controller (110).

[0078] Figure 7 is a flowchart illustrating the relationship between a user request and a standby step according to the present invention.

[0079] As described above with reference to FIG. 3, the electric vehicle (200) can receive a user request from a user through the input unit (270). The electric vehicle (200) can transmit the user request to the wireless charging device (100) through communication between the electric vehicle communication controller (210) and the charging device communication controller (110). The control unit (120) can cause the charging device communication controller (110) to receive the user request and control the power conversion unit (130) based on the received user request.

[0080] According to the present invention, the user request may be a request to stop charging or a request to resume charging. Specifically, when the wireless charging device (100) receives a request to stop charging, the control unit (120) may control the power conversion unit (130) to prevent the power conversion unit (130) from converting the power supplied from the external power grid (400). If the power conversion unit (130) is unable to convert the supplied power, wireless charging of the electric vehicle (200) by the wireless charging device (100) is not performed. In addition, when the wireless charging device (100) receives a request to resume charging, the control unit (120) may control the power conversion unit (130) to allow the power conversion unit (130) to convert the power supplied from the external power grid (400). If the power conversion unit (130) is able to convert the supplied power, wireless charging of the electric vehicle (200) by the wireless charging device (100) may be performed.

[0081] As illustrated in FIG. 7, the wireless charging method for an electric vehicle (200) may further include a standby step (S210). Specifically, if a predetermined condition is met in step (S200) of pairing the wireless charging device (100) with the electric vehicle (200) through established communication, the standby step (S210) may be performed. Furthermore, if another predetermined condition is met in the standby step (S210), step (S200) may be performed again.

[0082] According to the present invention, the standby phase (S210) means a phase in which communication between the wireless charging device (100) and the electric vehicle (200) is established and pairing is completed, but the wireless charging device (100) does not perform wireless charging of the electric vehicle (200) according to a user request. Specifically, in the standby phase (S210), the control unit (120) can control the power conversion unit (130) so that the power conversion unit (130) does not convert power supplied from an external power grid (400). In this case, the wireless charging device (100) does not perform wireless charging of the electric vehicle (200).

[0083] According to the present invention, when the wireless charging device (100) receives a request to stop charging from the electric vehicle (200), a standby step (S210) may be performed after step (S200). In this case, even if the electric vehicle (200) enters the wireless charging area of ​​the wireless charging device (100), the charging session (S300) is not performed. When the electric vehicle (200) leaves the wireless charging area of ​​the wireless charging device (100) in the standby step (S210), a step (S400) may be performed to cause the charging device communication controller (110) to terminate communication with the electric vehicle communication controller (210).

[0084] According to the present invention, when the wireless charging device (100) receives a charging resumption request from the electric vehicle (200) in the standby step (S210), a step (S200) of pairing the wireless charging device (100) with the electric vehicle (200) through established communication and a charging session (S300) can be performed. In this case, the wireless charging device (100) can supply wireless charging to the electric vehicle (200).

[0085] As illustrated in FIG. 7, a charging session (S300) may include a charging start step (S310), a charging execution step (S320), and a charging end step (S330). Furthermore, the charging session (300) may further include a standby step (S321). Specifically, if a predetermined condition is met in the charging execution step (S320), the standby step (S321) may be performed. Furthermore, if another predetermined condition is met in the standby step (S321), the charging execution step (S320) may be performed again.

[0086] According to the present invention, the standby step (S321) means a step in which communication between the wireless charging device (100) and the electric vehicle (200) is established and pairing is completed, but the wireless charging device (100) does not perform wireless charging of the electric vehicle (200) according to a user request. Specifically, in the standby step (S210), the control unit (120) can control the power conversion unit (130) so that the power conversion unit (130) does not convert power supplied from the external power grid (400). In this case, the wireless charging device (100) does not perform wireless charging of the electric vehicle (200).

[0087] According to the present invention, when the wireless charging device (100) receives a request to stop charging from the electric vehicle (200) in the charging execution step (S320), a standby step (S321) may be performed. In this case, the wireless charging of the electric vehicle (200) that was previously being performed may be stopped. When the electric vehicle (200) leaves the wireless charging area of ​​the wireless charging device (100) in the standby step (S321), a charging termination step (S330) and a step (S400) of causing the charging device communication controller (110) to terminate communication with the electric vehicle communication controller (210) may be performed.

[0088] According to the present invention, when the wireless charging device (100) receives a charging resumption request from the electric vehicle (200) in the standby step (S321), the charging execution step (S320) may be performed. In this case, the wireless charging device (100) may supply wireless charging to the electric vehicle (200).

[0089] That is, if the electric vehicle (200) receives a request to stop charging from the user before communication with the wireless charging device (100) is established, even if the electric vehicle (200) enters the wireless charging area of ​​the wireless charging device (100), establishes communication with the wireless charging device (100), and is paired with the wireless charging device (100), wireless charging of the electric vehicle (200) is not performed. However, if the electric vehicle (200) receives a request to resume charging from the user later, wireless charging of the electric vehicle (200) can be performed. Meanwhile, if the step (S400) of causing the charging device communication controller (110) to terminate communication with the electric vehicle communication controller (210) in a state where wireless charging of the electric vehicle (200) is not performed due to the request to stop charging is performed, the wireless charging device (100) returns to a state in which wireless charging can be performed. Accordingly, when another electric vehicle (200) enters the wireless charging area of ​​the wireless charging device (100), the wireless charging device (100) can supply wireless charging to another electric vehicle (200).

[0090] In addition, if the electric vehicle (200) receives a request to stop charging from the user while wireless charging of the electric vehicle (200) is being performed, the wireless charging of the electric vehicle (200) may be stopped. However, if the electric vehicle (200) receives a request to resume charging from the user later, the wireless charging of the electric vehicle (200) may be restarted. Meanwhile, if the wireless charging of the electric vehicle (200) is stopped due to the request to stop charging, and the charging termination step (S330) and the step (S400) of causing the charging device communication controller (110) to terminate communication with the electric vehicle communication controller (210) are performed, the wireless charging device (100) returns to a state in which wireless charging can be performed. Accordingly, if another electric vehicle (200) enters the wireless charging area of ​​the wireless charging device (100), the wireless charging device (100) can supply wireless charging to another electric vehicle (200).

[0091] FIG. 8 is a conceptual diagram illustrating a wireless charging device according to the present invention charging an electric vehicle based on communication with an external server.

[0092] As illustrated in FIG. 8, the wireless charging device (100) can communicate with an external server (300) via a charging device communication controller (110). In addition, the wireless charging device (100) can receive information about the charging environment from the external server (300) through communication with the external server (300). The control unit (120) can control the power conversion unit (130) based on the received information about the charging environment.

[0093] As illustrated in FIG. 8, the wireless charging device (100) may further include a compensation network (150). The control unit (120) may control the compensation network (150) based on information about the charging environment. Specifically, the compensation network (150) may be a circuit used to optimize power transmission efficiency between the power transmission unit (140) and the power reception unit (240) in the wireless charging system of the electric vehicle (200). More specifically, the compensation network (150) may include passive elements such as a capacitor and an inductor. The compensation network (150) may be configured to adjust impedance, maintain a resonance state between the power transmission unit (140) and the power reception unit (240), and optimize a coupling factor between the power transmission unit (140) and the power reception unit (240). The compensation network (140) may be configured as an LC circuit connected in series or parallel. However, the compensation network (140) is not limited to the above-described configuration and may be designed in various ways depending on the charging conditions.

[0094] According to the present invention, information about the charging environment may be at least one selected from the group consisting of information about disasters and emergency situations, information about weather and the environment, information about physical environmental conditions, and information about safety and security, but is not limited thereto.

[0095] For example, information about disasters and emergencies may mean at least one selected from the group including, but not limited to, information about earthquakes, fires, heavy rain, heavy snow, floods, typhoons, hurricanes, cyclones, landslides, tsunamis, strong winds, hail, building collapses, explosions, traffic accidents, wildfires, power outages, toxic gas leaks, and oil spills.

[0096] For example, weather and environmental information may mean at least one piece of information selected from the group including, but not limited to, information on temperature, humidity, precipitation, wind speed, wind direction, atmospheric pressure, solar radiation, ultraviolet index, fine dust concentration, ozone concentration, snowfall, fog, and ocean conditions (wave height, tidal current, sea surface temperature, etc.).

[0097] For example, information about physical environmental conditions may mean at least one piece of information selected from the group including, but not limited to, information about soil conditions, road conditions, water levels, power supply conditions, building safety conditions, water quality conditions, wildfire warnings, volcanic activity, electromagnetic wave exposure conditions, vehicle flow information, and traffic conditions.

[0098] For example, information about safety and security may include, but is not limited to, at least one piece of information selected from the group consisting of crime prevention alerts, disaster alerts, emergency rescue information, accident occurrence information, toxic substance leak warnings, infectious disease outbreak information, surveillance camera status, and security system status.

[0099] According to the present invention, the external server (300) may refer to at least one server selected from the group including the Korea Meteorological Administration server, the Disaster and Safety Management Headquarters server, the National Disaster Warning Center server, the Ministry of Environment server, a local government disaster management server, an international meteorological service server, the Korea Ocean Meteorological Administration server, a traffic information system server, and a satellite data provision server, but is not limited thereto.

[0100] According to one embodiment of the present invention, the wireless charging device (100) can receive information on disasters and emergency situations from an external server (300) through the charging device communication controller (110). The control unit (120) can control the power conversion unit (130) based on the information on disasters and emergency situations. Specifically, the control unit (120) can control the power conversion unit (130) so that the power conversion unit (130) does not operate. Alternatively, the control unit (120) can control the power conversion unit (130) so that the power conversion unit (130) does not convert power. In this case, the wireless charging device (100) cannot supply wireless charging to the electric vehicle (200). Accordingly, secondary damage that may occur due to power transfer in disasters and emergency situations can be prevented.

[0101] According to one embodiment of the present invention, the wireless charging device (100) can receive information about the temperature from an external server (300) through the charging device communication controller (110). The control unit (120) can control the power conversion unit (130) based on the information about the temperature. Specifically, when the temperature is higher than a predetermined threshold value, the control unit (120) can control the power conversion unit (130) to lower the amount of power transmitted to the power transmission unit (140). In this case, the amount of power consumed in the compensation network (150) or the power transmission unit (140) can be reduced. Accordingly, when the temperature of the electric vehicle charging road (500) rises due to high temperature, an additional increase in the temperature of the electric vehicle charging road (500) due to power transmission can be prevented.

[0102] According to one embodiment of the present invention, the wireless charging device (100) can receive information on humidity, precipitation, and fine dust from an external server (300) through the charging device communication controller (110). The control unit (120) can control the compensation network (150) based on the information on humidity and precipitation. Specifically, the control unit (120) can control the compensation network (150) so that the compensation network (150) changes the coupling coefficient between the power transmission unit (140) and the power reception unit (240). In this case, when moisture or fine dust is present in the air, the wireless charging device (100) can supply wireless charging to the electric vehicle (200) at an optimal efficiency based on the coupling coefficient optimized for the environment.

[0103] Meanwhile, the specific details described above are merely examples described to explain the wireless charging device (100) and wireless charging method of an electric vehicle (200) according to one embodiment of the present invention, and the present invention is not limited thereto.

[0104] FIG. 9 is a conceptual diagram illustrating a wireless charging device according to the present invention charging an electric vehicle based on a user request and / or communication with an external server.

[0105] As illustrated in FIG. 9, the wireless charging device (100) can receive user requests or information about the charging environment from an electric vehicle (200) or an external server (300) via the charging device communication controller (110). The control unit (120) can control the power conversion unit (130) or the compensation network (150) based on the user requests or information about the charging environment. Details about the external server (300), user requests, and information about the charging environment are as described above.

[0106] While the present invention has been described above with reference to the embodiments illustrated in the drawings, these are merely exemplary, and those skilled in the art will appreciate that various modifications and variations of the embodiments are possible. However, such modifications should be considered within the technical protection scope of the present invention. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

Claims

1. In a wireless charging device for supplying wireless charging to an electric vehicle, A supply equipment communication controller (SECC) for communicating with an electric vehicle communication controller (EVCC) included in the electric vehicle; A power conversion unit for receiving power from an external power grid and converting the supplied power; A power transmission unit for transmitting the converted power to the electric vehicle; and A control unit for causing the charging device communication controller to receive a user request and controlling the power conversion unit based on the received user request; including, Wireless charging device for electric vehicles.

2. In paragraph 1, The above user request is input from the user through the input unit provided in the electric vehicle and transmitted through the electric vehicle communication controller. Wireless charging device for electric vehicles.

3. In paragraph 1, The above user request is a request to stop charging or a request to resume charging. Wireless charging device for electric vehicles.

4. In paragraph 3, The control unit controls the power conversion unit so that the power conversion unit does not convert the supplied power when the user request is a request to stop charging. Wireless charging device for electric vehicles.

5. In paragraph 3, The control unit controls the power conversion unit so that the power conversion unit can convert the supplied power when the user request is a request to resume charging. Wireless charging device for electric vehicles.

6. In paragraph 4, The control unit controls the power conversion unit so that the power conversion unit can convert the supplied power when communication between the charging device communication controller and the electric vehicle communication controller is terminated. Wireless charging device for electric vehicles.

7. A wireless charging method for supplying wireless charging to an electric vehicle using a wireless charging device including a supply equipment communication controller (SECC), a power conversion unit, and a power transmission unit, A step of causing the charging device communication controller to establish communication with an electric vehicle communication controller (EVCC) included in the electric vehicle; A step of pairing the wireless charging device with the electric vehicle through the established communication; A step of causing the power conversion unit to convert power supplied from an external power grid; A step of causing the power transmission unit to transmit the converted power to the electric vehicle; A step of receiving a user request through the above charging device communication controller; A step of controlling the power conversion unit based on the received user request; and A step of causing the charging device communication controller to terminate communication with the electric vehicle communication controller; including, How to wirelessly charge an electric vehicle.

8. In paragraph 7, A step of causing the charging device communication controller to receive a user request from the electric vehicle communication controller; Including more, The above user request is input from the user through the input unit provided in the electric vehicle and transmitted through the electric vehicle communication controller. How to wirelessly charge an electric vehicle.

9. In paragraph 7, The above user request is a request to stop charging or a request to resume charging. How to wirelessly charge an electric vehicle.

10. In paragraph 9, The step of controlling the power conversion unit based on the received user request is: A step of preventing the power conversion unit from converting the supplied power when the user request is a request to stop charging; including more, How to wirelessly charge an electric vehicle.

11. In paragraph 9, The step of controlling the power conversion unit based on the received user request is: A step of enabling the power conversion unit to convert the supplied power when the user request is a request to resume charging; including more, How to wirelessly charge an electric vehicle.

12. In paragraph 10, A step of controlling the power conversion unit so that the power conversion unit can convert the supplied power when communication between the charging device communication controller and the electric vehicle communication controller is terminated; including more, How to wirelessly charge an electric vehicle.

13. In a wireless charging device for supplying wireless charging to an electric vehicle, A supply equipment communication controller (SECC) for communicating with an electric vehicle communication controller (EVCC) included in the electric vehicle; A power conversion unit for receiving power from an external power grid and converting the supplied power; A power transmission unit for transmitting the converted power to the electric vehicle; and A control unit for controlling the power conversion unit based on information about the charging environment received from an external server through the charging device communication controller; including, Wireless charging device for electric vehicles.

14. In paragraph 13, reward network; Including more, The control unit controls the compensation network based on information about the charging environment. Wireless charging device for electric vehicles.

15. In paragraph 13, The information about the charging environment is at least one piece of information selected from the group consisting of information about disasters and emergency situations, information about weather and the environment, information about physical environmental conditions, and information about safety and security. Wireless charging device for electric vehicles.

16. A wireless charging method for supplying wireless charging to an electric vehicle using a wireless charging device including a supply equipment communication controller (SECC), a power conversion unit, and a power transmission unit, A step of causing the charging device communication controller to establish communication with an electric vehicle communication controller (EVCC) included in the electric vehicle; A step for pairing the wireless charging device with the electric vehicle through the established communication; A step of causing the power conversion unit to convert power supplied from an external power grid; A step of causing the power transmission unit to transmit the converted power to the electric vehicle; A step of receiving information about the charging environment from an external server through the charging device communication controller; and A step of controlling the power conversion unit based on information about the received charging environment; including, How to wirelessly charge an electric vehicle.

17. In paragraph 16, A step of controlling a compensation network provided in the wireless charging device based on information about the charging environment; including more, How to wirelessly charge an electric vehicle.

18. In paragraph 16, The information about the charging environment is at least one piece of information selected from the group consisting of information about disasters and emergency situations, information about weather and the environment, information about physical environmental conditions, and information about safety and security. How to wirelessly charge an electric vehicle.

Images