KR102042319B1 - Apparatus and method for selectively supplying wired/wireless power to electric vechile - Google Patents

Abstract

A wired / wireless charging device for an electric vehicle includes: a converter for converting power supplied to a power supply device to charging power of an electric vehicle; A first power line and a second power line connected to the converter to supply charging power; A charging cable connected to the first power line and connected to the electric vehicle, a pickup unit for picking up the charging power of the first power line, and a regulator regulating the picked up charging power to supply the electric vehicle through the charging cable; At least one wired charging module comprising a; And connected to the second power line and includes a power transmission pad, when the receiving pad of the electric vehicle may include at least one wireless charging module for supplying power to the electric vehicle through the transmission pad.

Description

Apparatus and method for selectively supplying wired and wireless power to electric vehicles {APPARATUS AND METHOD FOR SELECTIVELY SUPPLYING WIRED / WIRELESS POWER TO ELECTRIC VECHILE}

The present invention relates to an apparatus and a method for selectively supplying wired or wireless power to an electric vehicle. In particular, the present invention relates to a charging device capable of supplying a charging source for an electric vehicle using wired and wireless power sources, and a charging apparatus and method for an electric vehicle apparatus.

Automobiles use petroleum fuel, such as gasoline or diesel, but recently, electric vehicles or hybrid vehicles using petroleum fuel and electricity have emerged. An electric vehicle refers to a vehicle using an electric battery and an electric motor without using petroleum fuel and an engine, and refers to a vehicle driving a vehicle by rotating the motor with electricity accumulated in the battery. An electric vehicle may have advantages of low engine noise, low vibration, and a relatively long service life of the vehicle.

The charging method of the electric vehicle may use a wireless charging or a wired charging method. However, electric vehicles have a problem that the charging time of the battery is relatively longer than that of petroleum fueled cars. Therefore, various studies are being conducted to shorten the charging time of the electric vehicle.

The problem to be solved by the present invention is to convert the power supplied from the power supply to the charging power of the electric vehicle to apply to the first power line and the second power line, install the wired power charging module in the first power line 2 is to provide a charging device and a method for installing a wireless power charging module in the power line to supply wired and wireless power at the same time.

In addition, the problem to be solved by the present invention, the charging device of the electric vehicle that can receive the wired and wireless power supplied to the first power line and the second power line in the charging device and selectively supply to the first and second batteries and To provide a way.

A wired / wireless charging device for an electric vehicle according to various embodiments of the present disclosure may include a converter for converting power supplied to a power supply device to charging power of an electric vehicle, and a first power line and a second power line connected to the converter to supply charging power. And a charging cable connected to the first power line and connected to the electric vehicle, the pickup unit picking up the charging power of the first power line, and regulating the picked up charging power to supply the electric vehicle through the charging cable. At least one wired charging module including a regulator; and a power transmission pad connected to a second power line, wherein the reception pad of the electric vehicle is located, at least one wireless power supply to the electric vehicle through the transmission pad. It may include a charging module.

According to various embodiments of the present disclosure, an electric vehicle apparatus includes a battery including a first battery and a second battery, a charging cable, a wired power receiving module configured to receive wired charging power from a charging cable, and a power receiving pad. And a wireless power receiving module for receiving wireless charging power supplied from a transmitting pad of a charging device, a wired power receiving module, a power switch located between the wireless power receiving module and a battery, a wireless power receiving module and / or a wired power source. When receiving the charging power from the receiving module analyzes the state of charge of the battery, based on the analysis result may include a control module for applying the charging power to the battery by controlling the power switch.

According to various embodiments of the present disclosure, a method of charging an electric vehicle includes recognizing a connection of a wired power source when a power cable of a first power line of a charging device is connected, transmitting pads of a second power line of the charging device and an electric vehicle. Recognizing the contactless power of the receiving pad, and analyzing the state of charge of the first battery and the second battery when it is recognized that the connection of the wire or wireless power, and the power received by the battery with a low battery charge based on the analysis result Controlling the power switch to be supplied.

According to an embodiment of the present invention, the charging device converts the power supplied from the power supply device to the charging power of the electric vehicle and applies it to the first power line and the second power line, and installs the wired power charging module in the first power line. And by installing a wireless power charging module on the second power line can supply wired and wireless power at the same time, electric vehicles can be selectively charged using wired power and / or wireless power.

According to an embodiment of the present invention, the electric vehicle includes a first battery and a second battery, and selects at least one of wired and wireless power supplies supplied to the first power line and the second power line in the charging device. May be selectively supplied based on the charge amount of the first and / or second battery.

1 is a diagram illustrating a configuration of a charging device for an electric vehicle according to various embodiments of the present disclosure.
2 is a diagram illustrating a configuration of a converter according to various embodiments.
3 is a diagram illustrating a configuration of a wired charging module according to various embodiments.
4 is a diagram illustrating a configuration of a wireless charging module according to various embodiments.
5 is a diagram illustrating a configuration of an electric vehicle according to various embodiments of the present disclosure.
6 is a flowchart illustrating a charging operation of an electric vehicle according to various embodiments of the present disclosure.

Prior to the description of the present invention, the terms or words used in the specification and claims described below should not be construed as being limited to the ordinary or dictionary meanings, and the inventors should consider their own invention in the best way. For the purpose of explanation, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention on the basis of the principle that it can be appropriately defined as the concept of term. Therefore, the embodiments described in the present specification and the configuration shown in the drawings are only the most preferred embodiments of the present invention, and do not represent all of the technical idea of the present invention, and various equivalents may be substituted for them at the time of the present application. It should be understood that there may be water and variations.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this case, it should be noted that like elements are denoted by like reference numerals as much as possible. In addition, detailed descriptions of well-known functions and configurations that may blur the gist of the present invention will be omitted. For the same reason, some components in the accompanying drawings are exaggerated, omitted, or schematically illustrated, and the size of each component does not entirely reflect the actual size.

1 is a diagram illustrating a configuration of a charging device for an electric vehicle according to various embodiments of the present disclosure.

Referring to FIG. 1, a charging device of an electric vehicle includes a commercial power supply device 110, an energy storage system (ESS) 120, a converter 130, a first power line 140, and a wired charging module ( 150, the second power line 160 and the wireless charging module 170 may be configured to include all or a part.

The commercial power supply device 110 may be a device for supplying commercial power. For example, the commercial power supply 110 may be a GRID. The GRID may be a power transmission network and may be to transmit power to the power transmission network. By connecting the nation's power generation and transmission facilities in a network structure, power supply can be smoothly supplied and power generation resources can be efficiently used, and GRID can mean such a power transmission network.

The ESS 120 may include a battery, charge the generated electricity to the battery, and discharge the charged power when the power is needed. The charging power of the ESS 120 may be a commercial power source, and may be used by converting energy generated by solar, geothermal, and wind power into power. The ESS 120 may be a power supply device capable of maximizing energy efficiency through selective and efficient use of electric power after storing the power produced in each associated system including a power plant, substation, and transmission line.

The converter 130 converts the power supplied from the commercial power supply device 110 or the ESS 120 into the charging power of the vehicle, and supplies the converted charging power to the first power line 140 as the first charging power, The second power line 160 may be supplied as a second charging power source.

The wired charging module 150 may include a plurality of wired chargers 151-15N. Each of the wired chargers 151-15N includes a charging cable connected to the electric vehicle, and may pick up the first charging power supplied to the first power line to regulate the charging power of the electric vehicle. When connected to the electric vehicle, the converted first charging power may be supplied as the charging power of the electric vehicle.

The wireless charging module 170 may include a plurality of wireless chargers 171-17M. Each of the wireless chargers 171-17M includes a wireless power transmitter that can supply power to the electric vehicle in a non-contact manner, and when the wireless power receiver of the electric vehicle is located in close proximity, the second charging power supplied to the second power line is provided. The second charging power converted in the non-contact manner may be supplied to the charging power of the electric vehicle.

According to various embodiments of the present disclosure, the electric vehicle includes wired and wireless power receiving modules, and the charging device may supply wired power corresponding to wired and wireless power receiving modules, respectively, to the first and second power lines. And wireless charging modules. The electric vehicle may selectively connect the wired and wireless power receiving module to the wired charging module 150 and / or the wireless charging module 170. When the user (driver) of the electric vehicle places the wired and wireless power receiving modules at the same time on the wired charging module 150 and / or the wireless charging module 170, the charging device includes the first power line 140 and the second power line. The first charging power and the second charging power simultaneously applied to the 160 may be simultaneously supplied through the wired charging module 150 and / or the wireless charging module 170, respectively, and the electric vehicle is based on this. Can be performed simultaneously.

2 is a diagram illustrating a configuration of a converter according to various embodiments.

Referring to FIG. 2, the converter 130 may include an AC / DC converter 130 and a DC / AC converter 220.

The AC / DC conversion module 210 may include an AC / DC rectifier circuit and a booster circuit. The AC / DC conversion module 210 may rectify AC power of 220V-240V / 60Hz of the commercial power supply device 110, and the DC / AC converter 220 is rectified output from the AC / DC converter 210. The power may be converted into an AC power of 85 KHz and output to the first power line 140 and the second power line 160. In addition, when charging power of the ESS 120 is applied, the DC / AC converter 220 converts the rectified power output from the AC / DC converter 220 into an AC power of 85 KHz to convert the first power line 140 and The output may be output to the second power line 160. The converter 130 may further include a booster module, and the booster may apply power to the AC / DC converter 220 after boosting the power applied from the ESS 120.

When commercial power of AC 220 ~ 240V 60Hz is supplied from the commercial power supply unit 110, the AC / DC conversion module 210 of the converter 130 rectifies AC commercial power of 220V-240V / 60Hz, DC / AC converter The 220 may convert the rectified power into AC charging power of 85 KHz and supply the power to the power lines 140 and 160. That is, the converter 130 may perform a function of converting AC commercial power into AC power for charging an electric vehicle. The power stored in the ESS 120 may be a DC power source. Therefore, when the power of the ESS 120 is used as the charging power of the electric vehicle, the AC / DC conversion operation may be omitted, and the ESS power may be converted into the AC power for charging the vehicle and supplied to each power line 140 or 160. .

When the commercial power supply or the ESS power is supplied, the converter 130 may convert the AC power to 85KHz for charging the vehicle and supply the first and second power lines 140 and 160. The converter 130 may perform a function of switching to AC / DC and an inverter function of converting to DC / AC. The converter 130 may supply the converted AC power for the vehicle charging to the power lines of the two lines and simultaneously apply the wireless and the wired lines.

3 is a diagram illustrating a configuration of a wired charging module according to various embodiments.

Referring to FIG. 3, the wired charging module may include a roller 310, a pickup unit 320, a regulator 330, and a charging cable 340.

The first power line 140 may be supplied with an AC power of 85 KHz. The roller 310 may be installed in a structure capable of moving the wired charging module 150 on the first power line 140. The pickup unit 320 may be in contact or non-contact with the first power line, and may pick up the charging AC power applied to the first power line 140. The regulator 330 may regulate the charging power picked up by the pickup unit 320 to the charging power level of the vehicle (eg, DC 450V). The charging cable 340 may be connected to the charging plug of the electric vehicle, and may supply the charging power regulated by the regulator 330 to the electric vehicle.

The wired charging module 150 may include a pickup unit 320 and a regulator 330. The wired charging module 150 may supply charging power to the electric vehicle while moving the wired charging module 150 through the roller 310. The wired charging module 150 may pick-up power supplied from the converter 130 to the first power line 140 by a magnetic flow method through the pickup unit 320, and is picked up through the regulator 330. By regulating the power it can be quickly supplied to the electric vehicle by DC 450V through the charging cable 340. The wired charging module 150 may pick up the charging power applied to the first power line 140 in a non-contact manner. In addition, the wired charging module 150 may have a structure capable of supplying charging power to the length of the charging cable 340 and the first power wire to the electric vehicle while moving the fixed charging module 150. The wired charging module 150 may extend the supply distance of the charging power of the wired charging module 150 by the length of the charging cable 340 and the length of the first power line 140, not fixed, thereby charging the battery of the electric vehicle. You can relax. In addition, the wired charging module 150 can be charged while moving on the first power line 140, there is an advantage that can be installed and operated a plurality of wired chargers.

4 is a diagram illustrating a configuration of a wireless charging module according to various embodiments.

Referring to FIG. 4, a plurality of power transmission pads 410 may be installed in the second power line 160, and the power transmission pads 410 may be charged by being in contact with or not in contact with the power receiving pads 420 of the electric vehicle. Can supply power. When the commercial power supply of the AC 220 ~ 240V 60Hz is supplied from the commercial power supply device 110, the converter 130 may convert the commercial power into AC AC for charging at 85KHz to supply the second power line 160. The power transmission pad 410 of the wireless charging module 170 may wirelessly supply the charging power of the second power line 160 to the power receiving pad 420 when the electric power receiving pad 420 of the electric vehicle is in close proximity. have. A plurality of power transmission pads may be installed in the second power line 160. Therefore, the electric vehicle may be supplied with wireless charging power by using one of the plurality of power transmission pads.

The wireless power transmission and reception method may be implemented in various ways. One method may be a method of wirelessly transmitting and receiving power in a magnetic field coupling method by winding a coil several times to induce a strong magnetic field in one direction by flowing a high frequency current through the coil, and by proximity of a coil resonating at a similar frequency. Another method may be a method of wirelessly transmitting and receiving power by using an electromagnetic radiation method in which radiation occurs while an electric field and a magnetic field that change with time influence each other using an antenna. In addition, one method may use a magnetic field coupling method using a resonator. The wireless charging module 170 according to various embodiments may use one of the above wireless power transmission and reception methods, or may use another wireless power transmission and reception method.

5 is a diagram illustrating a configuration of an electric vehicle according to various embodiments of the present disclosure.

Referring to FIG. 5, the electric vehicle includes a control module 500, a wired power receiving module 510, a wireless power receiving module 520, a switch 530, a battery 540, a memory 550, and a driving module 560. And a display module 570. The battery 540 may include a first battery 590 and a second battery 590, each of which may be charged by two independently received charging power sources.

The control module 500 controls the electrical operation of the vehicle and may control the charging operation according to various embodiments. The memory 550 may store programs and / or application data for performing an electric operation of the electric vehicle and a charging operation according to various embodiments, and may store data generated during the electric vehicle and the charging operation. The driving module 560 may drive the driving operation of the vehicle by the operating power supplied from the battery. The display module 570 may display a driving and / or charging operation state of the vehicle.

The battery 540 may be charged by at least one charging power and may discharge the charged power. The battery 540 may include a plurality of batteries that can be charged corresponding to a plurality of charging powers, respectively. The battery 540 according to various embodiments may be configured with two batteries 590 and 595 to simultaneously charge wired and wirelessly received charging power sources.

The wired charging receiving module 510 may receive a wired charging power supplied from a wired charging module (for example, the wired charging module 150 of FIG. 1. The wireless charging module 510 is a wireless device of the charging device). A charging module (eg, may wirelessly receive the charging power supplied from the wireless charging module 170 of FIG. 1) The switch 530 is wired power receiving module 510 and / or under the control of the control module 500. The wired power source and / or the wireless power source applied by the wireless power receiving module 520 may be switched to switch to the first battery 590 and / or the second battery 595.

The battery 540 may be charged. The user (driver) of the electric vehicle may connect the charging cable to the vehicle or position the wireless power receiving module 520 in proximity to the wireless charging module of the charging device. When the charging cable is connected, the control module 500 may recognize the connection between the wired power receiving module 510 and the wired charging module of the charging device through the wired power receiving module 510. In addition, if the wireless power receiving module 520 is located close to the wireless charging module of the charging device, the control module 500 is the wireless power receiving module 520 and the wireless charging module of the charging device through the wireless power receiving module 520. The connection can be recognized. When the reception of the wired or wireless power is recognized, the control module 500 may analyze the charge amount (remaining amount) of the first battery 590 and the second battery 595. The control module 500 may control the switch 530 such that charging power is applied to a battery having a smaller battery charge amount based on the analysis result.

In addition, when both the wired power and the wireless power are received, the control module 500 may analyze the charge amount (remaining amount) of the first battery 590 and the second battery 595. In this case, the wired power source may be a power source capable of rapid charging relative to the wireless power source. In this case, the control module 500 may control the switch 530 such that the wired charging power is applied to the battery with a smaller amount of battery charge and the wireless charging power is applied to the battery with a higher amount of battery charge based on the analysis result.

6 is a flowchart illustrating a charging operation of an electric vehicle according to various embodiments of the present disclosure.

Referring to FIG. 6, the charging device may convert commercial power or ESS power into AC power for charging an electric vehicle and supply the same to the first power line and the second power line. The charging device may include a plurality of wired chargers installed in the first charging line, each wired charger may include a charging cable, and may pick up the charging power of the first charging line in a non-contact manner, and a charging cable. When connected to the vehicle, the picked-up power can be supplied as an electric vehicle wired charging power. The charging device may include a plurality of wireless chargers installed in the second charging line, and each of the wireless chargers may supply power to the second power line when the power receiving pad (wireless charging receiving module) of the electric vehicle is located. Can be supplied by charging power. The battery of the electric vehicle may be composed of a plurality of batteries, and when the plurality of charging power sources are applied, the batteries of the electric vehicle may be charged by the power sources to which the plurality of batteries are applied.

The control module (for example, the control module 500 of FIG. 5) may receive the charging power supplied from the charging device when the charging receiving module of the electric vehicle is connected to or near the charging device, and when the charging power is received. In operation 611, the charging mode may be recognized. If the charging mode is recognized, the control module may analyze the charging method in step 613. The charging method may be one of wired charging, wireless charging or wired and wireless charging.

When the reception of the charging power is recognized through the wired charging receiving module, the control module recognizes the wired charging mode in step 615 and controls the power switch so that the power output from the wired charging receiving module is applied to the battery in step 617. . In this case, the control module may analyze the remaining amounts of the first battery and the second battery, and control the power switch so that the charging power is applied to the battery having the small amount of the remaining battery. When the charging path is set, the control module may control the wired charging operation in which power received from the wired charge receiving module is supplied to the battery and charged by the wired power source in which the battery is received in step 619. If charging of the battery is completed or a stop request of the charging operation is recognized by the user while performing the wired charging operation, the control module may end the wired charging operation.

When the reception of the charging power is recognized through the wireless charging receiving module, the control module recognizes that the wireless charging mode in step 621, and may control the power switch so that the power output from the wireless charging receiving module is applied to the battery in step 623. . In this case, the control module may analyze the remaining amounts of the first battery and the second battery, and control the power switch so that the charging power is applied to the battery having the small amount of the remaining battery. When the charging path is set, the control module may control the wireless charging operation in which power received from the wireless charging receiving module is supplied to the battery and charged by the wireless power receiving the battery in step 625. If the charging of the battery is completed or the stop request of the charging operation is recognized by the user during the wireless charging operation, the control module may end the wireless charging operation.

If the reception of the charging power is recognized through the wired charging receiving module and the wireless charging receiving module, the control module may recognize the wired / wireless charging mode in step 621. In the wired / wireless charging mode, the control module may control the power switch so that the power output from the wired charging receiving module and the power output from the wireless charging receiving module are applied to the corresponding batteries, respectively, in step 631. Here, the charging power received by the wired charging receiving module may be greater than the charging power received by the wireless power receiving module. Therefore, the wired charging power may be a rapid charging power. Therefore, when the wired power and the wireless power are simultaneously received, the wired power can efficiently charge the battery by controlling the charging path to supply the battery with the larger battery capacity or the battery with the smaller battery charge. In the wired / wireless charging mode, the control module analyzes the remaining amounts of the first battery and the second battery, and wired charging power is applied to a battery (eg, the first battery) with a small amount of battery remaining, and a battery having a large amount of battery remaining (eg, For example, the power switch may be controlled to apply the wireless charging power to the second battery. When the charging path is set, the control module can control the charging operation by supplying the charging powers respectively received by the wired charging receiving module and the wireless charging receiving module to the batteries through the charging path set by the power switch. When the charging of the battery is completed or the stop request of the charging operation is recognized by the user while performing the wired / wireless charging operation, the control module may end the wired / wireless charging operation.

While the invention has been described using some preferred embodiments, these embodiments are illustrative and not restrictive. As such, those of ordinary skill in the art will appreciate that various changes and modifications may be made according to equivalents without departing from the spirit of the present invention and the scope of rights set forth in the appended claims.

Claims (6)

In a wired and wireless charging device,
Power supply;
A converter for converting the power supplied by the power supply device to the charging power of the electric vehicle;
A first power line and a second power line connected to the converter to supply the charging power;
A pickup unit for picking up the charging power of the first power line, and a regulator for regulating the picked up charging power and supplying the electric vehicle to the electric vehicle through a charging cable, the at least one connected to the first power line. Wired charging module; And
When the power receiving pad of the electric vehicle is located, the electric power supply to the electric vehicle through the power transmission pad, and comprises at least one wireless charging module connected to the second power line,
The electric vehicle,
When one of wired and wireless power is supplied from the wired / wireless charging device, the state of charge of the first battery and the second battery included in the electric vehicle is analyzed, and the first battery and Applying power supplied from the wired / wireless charging device to a battery having a small charge amount among the second batteries,
When wired power and wireless power are supplied together from the wired / wireless charging device, the charging state of the first battery and the second battery included in the electric vehicle is analyzed and the first battery and the based on the charge state analysis result. Applying wired power supplied from the wired / wireless charging device to a battery having a low charge amount among second batteries, and applying wireless power supplied from the wired / wireless charging device to the remaining batteries of the first battery and the second battery.
Wired and wireless charging device.
The method of claim 1,
The at least one wired charging module,
Further comprising a roller between the first power line and the pickup unit so that the at least one wired charging module can move along the first power line.
Wired and wireless charging device.
In the electric vehicle device,
A first battery and a second battery;
A wired power receiving module including a charging cable and receiving wired charging power from the charging cable;
A wireless power receiving module including a power receiving pad and receiving wireless charging power supplied from a power transmitting pad of the charging device;
A power switch connected to the wired power receiving module and the wireless power receiving module and connected to the first battery and the second battery; And
When one of the wireless charging power and the wired charging power is received through one of the wireless power receiving module and the wired power receiving module, the charging state of the first battery and the second battery is analyzed and the charging state analysis result is obtained. And a control module configured to control the power switch to apply the received power of the wireless charging power and the wired charging power to a battery having a small charge amount among the first battery and the second battery.
The control module
When the wireless charging power and the wired charging power are received together through the wireless power receiving module and the wired power receiving module, the charging state of the first battery and the second battery is analyzed and based on a result of the charging state analysis. Controlling the power switch to apply the wired charging power to a battery having a small amount of charge among the first battery and the second battery, and to apply the wireless charging power to the remaining battery of the first battery and the second battery.
Electric vehicle device.

delete In the charging method of an electric vehicle comprising a wired power receiving module and a wireless power receiving module,
Recognizing reception of wired power when a charging cable of a first power line included in a charging device is connected;
Recognizing reception of wireless power when a wireless charging module including a power transmission pad of a second power line of the charging device and a wireless power reception module including a power reception pad of the electric vehicle are connected;
Analyzing a state of charge of a first battery and a second battery when receiving at least one of the wired power source and the wireless power source is recognized; And
Controlling a power switch included in the electric vehicle such that at least one of the wired power source and the wireless power source is applied to a battery having a low charge amount among the first battery and the second battery based on a result of the state of charge analysis. and,
The controlling step,
When the reception of one of the wired power source and the wireless power source is recognized, the received power of the wired power source and the wireless power source is stored in a battery having a small charge amount among the first battery and the second battery based on a result of the state of charge analysis. Controlling the power switch to be applied; And
When it is recognized that the wired power source and the wireless power source are received together, the wired power source is applied to a battery having a smaller amount of charge among the first battery and the second battery based on a result of the state of charge analysis. Controlling the power switch to apply the wireless power to the remaining batteries of a second battery;
Charging method.


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