WO2019035590A1 - 무선충전 과금방법 - Google Patents
무선충전 과금방법 Download PDFInfo
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- WO2019035590A1 WO2019035590A1 PCT/KR2018/008972 KR2018008972W WO2019035590A1 WO 2019035590 A1 WO2019035590 A1 WO 2019035590A1 KR 2018008972 W KR2018008972 W KR 2018008972W WO 2019035590 A1 WO2019035590 A1 WO 2019035590A1
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- receiver
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/06—Energy or water supply
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/133—Arrangements for measuring electric power or power factor by using digital technique
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/133—Arrangements for measuring electric power or power factor by using digital technique
- G01R21/1333—Arrangements for measuring electric power or power factor by using digital technique adapted for special tariff measuring
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q20/00—Payment architectures, schemes or protocols
- G06Q20/08—Payment architectures
- G06Q20/14—Payment architectures specially adapted for billing systems
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q30/00—Commerce
- G06Q30/02—Marketing; Price estimation or determination; Fundraising
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q30/00—Commerce
- G06Q30/04—Billing or invoicing
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
Definitions
- An embodiment relates to a wireless charging charging method.
- Portable terminals such as mobile phones and laptops, include a battery for storing power and a circuit for charging and discharging the battery. In order for the battery of such a terminal to be charged, power must be supplied from an external charger.
- a charging system (hereinafter referred to as a "wireless charging system") and a control method using a method of transmitting power wirelessly are proposed.
- the wireless charging system since the wireless charging system has not been installed in some portable terminals in the past and the consumer has to purchase the accessories separately equipped with the wireless charging receiver, the demand for the wireless charging system is low, but the wireless charging user is expected to increase rapidly It is expected that the terminal manufacturer will also be equipped with wireless charging function.
- a wireless charging system comprises a wireless power transmitter for supplying electric energy in a wireless power transmission mode and a wireless power receiver for receiving electric energy supplied from a wireless power transmitter to charge the battery.
- the embodiments are directed to solving the above problems and other problems.
- Another object of the embodiment is to provide a wireless charging method that provides a clear criteria or standard for billing calculation and charging for wireless charging.
- Another object of an embodiment is to provide a wireless charging method capable of efficiently and optimizing charging calculation and charging for wireless charging.
- a wireless charging method for charging a wireless power of a transmitter to a battery of a receiver, the method comprising: when the battery of the receiver is being charged, Periodically receiving a received power packet containing a value of the received power packet; Calculating cumulative power energy based on the received power value; Calculating a charge based on the calculated cumulative power energy; And transmitting the calculated charge to the server.
- a wireless charging method for charging a battery of a receiver with wireless power of a transmitter comprising: receiving a received power packet including a received power value from the receiver when the battery of the receiver is being charged; Periodically receiving; Calculating cumulative power energy based on the received power value; And transmitting the cumulative power energy to the server so that billing is calculated.
- a wireless charging method for charging a wireless power of a transmitter to a battery of a receiver includes: periodically generating a reception power value when the battery of the receiver is being charged; Calculating a cumulative power energy based on the generated received power value; Calculating a charge based on the cumulative power energy; And transmitting the calculated charge to the server.
- a wireless charging apparatus for charging a battery of a receiver includes: a communication unit; And a control unit.
- the communication unit periodically receives a received power packet including a received power value from the receiver, and may transmit the calculated charge under the control of the controller to the server.
- the controller calculates the accumulated power energy based on the received power value and calculates the charge based on the calculated accumulated power energy.
- a wireless charging apparatus for charging a battery of a receiver includes a communication unit; And a control unit.
- the communication unit periodically receives a reception power packet including a reception power value from the receiver, and may transmit the accumulated power energy calculated under the control of the controller to the server. And the charge can be calculated based on the accumulated power energy by the server.
- the controller may calculate the accumulated power energy based on the received power value.
- a wireless charging apparatus for charging a battery of a receiver includes: a communication unit; And a control unit.
- the control unit periodically generates a received power value when the battery of the receiver is being charged, calculates accumulated power energy based on the generated received power value, and calculates a charge based on the accumulated power energy have.
- the communication unit may transmit the calculated charge to the server under the control of the control unit.
- the receiver may calculate the cumulative power energy and provide it to the server, and the server can charge the billing based on the cumulative power energy information, thereby providing a clear standard or standard.
- the receiver can calculate the cumulative power energy and provide it to the server, and the server can charge the bill based on this cumulative power energy information, so that the billing calculation and billing can be efficiently and optimally There are advantages.
- a received power packet (hereinafter referred to as RPP) may be provided to the transmitter even when the power is off, The accumulated power energy charged in the battery of the receiver can be easily grasped.
- the receiver can calculate the cumulative power energy that is directly charged into the battery, so that if the billing calculation is more accurate and the cumulative power energy is calculated at the transmitter, There is an advantage that the irrationality in which the billing is calculated can be solved.
- FIG. 1 is a block diagram illustrating a wireless charging system according to an embodiment.
- FIG. 2 is a state transition diagram for explaining a first wireless power transmission procedure defined in the WPC standard
- FIG. 3 is a state transition diagram for explaining a second wireless power transmission procedure defined in the WPC standard.
- FIG. 4 is a block diagram illustrating a structure of a wireless power transmitter according to an exemplary embodiment of the present invention.
- FIG. 5 is a block diagram illustrating a structure of a wireless power receiver interworking with the wireless power transmitter according to FIG.
- FIG. 6 is a diagram for explaining a modulation and demodulation method of a wireless power signal according to an embodiment.
- FIG. 7 is a diagram for explaining a packet format according to an embodiment of the first wireless power transmission procedure.
- FIG. 8 is a diagram for explaining a message format of an identification packet according to an embodiment of the first wireless power transmission procedure.
- FIG. 9 is a diagram for explaining a message format of a configuration packet and a power control hold packet according to an embodiment of the first wireless power transmission procedure.
- FIG. 10 is a diagram for explaining a type of a packet that can be transmitted in a power transmission step and a message format thereof by a wireless power receiving apparatus according to an embodiment of the first wireless power transmission procedure.
- FIG. 11 shows a wireless charging system according to an embodiment.
- FIG. 12 is a flowchart for explaining a method of charging a charge according to the first embodiment in the wireless charging system.
- FIG. 13 shows a process of calculating power energy using a received power value (RPP) received from a receiver.
- RPP received power value
- FIG. 14 is a flowchart illustrating a method for charging a charge according to the second embodiment in the wireless charging system.
- 15 is a flowchart for explaining a method for charging a charge according to the third embodiment in the wireless charging system.
- the terms used in the embodiments of the present invention are intended to illustrate the embodiments and are not intended to limit the present invention.
- the singular forms may include plural forms unless otherwise specified in the text, and may be combined as A, B, and C when described as "at least one (or more than one) of B and C" ≪ / RTI > and any combination thereof.
- terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms are not limited to the nature, order or order of the constituent elements.
- an apparatus for transmitting wireless power on a wireless charging system includes a wireless power transmitter, a wireless power transmitter, a wireless power transmitter, a wireless power transmitter, a transmitter, a transmitter, a transmitter, A wireless power transmission device, a wireless power transmitter, a wireless charging device, and the like are used in combination.
- a wireless power receiving device, a wireless power receiving device, a wireless power receiving device, a wireless power receiving device, a receiving terminal, a receiving side, a receiving device, a receiver Terminals and the like can be used in combination.
- the wireless charging device may be configured as a pad type, a cradle type, an access point (AP) type, a small base type, a stand type, a ceiling embedded type, a wall type, Power may be transmitted to the device.
- AP access point
- a wireless power transmitter can be used not only on a desk or on a table, but also developed for automobiles and used in a vehicle.
- a wireless power transmitter installed in a vehicle can be provided in a form of a stand that can be easily and stably fixed and mounted.
- a wireless power receiver according to another embodiment may also be mounted on a vehicle, an unmanned aerial vehicle, an air drone or the like.
- a wireless power receiver may include at least one wireless power transmission scheme and may receive wireless power from two or more wireless power transmitters at the same time.
- the wireless power transmission scheme may include at least one of the electromagnetic induction scheme, the electromagnetic resonance scheme, and the RF wireless power transmission scheme.
- the wireless power receiving means for supporting the electromagnetic induction method includes a wireless power consortium (WPC), which is a wireless charging technology standard organization, and an electromagnetic induction wireless charging technique defined by the Air Fuel Alliance (formerly PMA, Power Matters Alliance) .
- the wireless power receiving means supporting the electromagnetic resonance method may include a resonance wireless charging technique defined in the Air Fuel Alliance (formerly Alliance for Wireless Power) standard mechanism, a wireless charging technology standard organization.
- a wireless power transmitter and a wireless power receiver that constitute a wireless charging system can exchange control signals or information through in-band communication or BLE (Bluetooth Low Energy) communication.
- the in-band communication and the BLE communication can be performed by a pulse width modulation method, a frequency modulation method, a phase modulation method, an amplitude modulation method, an amplitude and phase modulation method, and the like.
- the wireless power receiver can transmit various control signals and information to the wireless power transmitter by generating a feedback signal by switching on / off the current induced through the reception coil in a predetermined pattern.
- the information transmitted by the wireless power receiver may include various status information including received power intensity information.
- the wireless power transmitter can calculate the charging efficiency or the power transmission efficiency based on the received power intensity information.
- FIG. 1 is a block diagram illustrating a wireless charging system according to an embodiment.
- the wireless charging system includes a wireless power transmission terminal 10 for wirelessly transmitting power, a wireless power receiving terminal 20 for receiving the transmitted power, and an electronic device 30 Lt; / RTI >
- the wireless power transmitting terminal 10 and the wireless power receiving terminal 20 can perform in-band communication in which information is exchanged using the same frequency band as that used for wireless power transmission.
- the wireless power transmitting terminal 10 and the wireless power receiving terminal 20 perform out-of-band communication in which information is exchanged using a different frequency band different from the operating frequency used for wireless power transmission .
- information exchanged between the wireless power transmitting terminal 10 and the wireless power receiving terminal 20 may include control information as well as status information of each other.
- the status information and the control information exchanged between the transmitting and receiving end will become more apparent through the description of the embodiments to be described later.
- the in-band communication and the out-of-band communication may provide bidirectional communication, but the present invention is not limited thereto. In another embodiment, the in-band communication and the out-of-band communication may be provided.
- the unidirectional communication may be that the wireless power receiving terminal 20 transmits information only to the wireless power transmitting terminal 10, but the present invention is not limited thereto, and the wireless power transmitting terminal 10 may transmit information Lt; / RTI >
- bidirectional communication is possible between the wireless power receiving terminal 20 and the wireless power transmitting terminal 10, but information can be transmitted only by any one device at any time.
- the wireless power receiving terminal 20 may acquire various status information of the electronic device 30.
- the status information of the electronic device 30 may include current power usage information, information for identifying a running application, CPU usage information, battery charge status information, battery output voltage / current information, temperature information, but it is not limited to this, and information that can be acquired from the electronic device 30 and available for wireless power control suffices.
- FIG. 2 is a state transition diagram for explaining a first wireless power transmission procedure defined in the WPC standard
- power transmission from a transmitter to a receiver according to a first wireless power transmission procedure of the WPC standard is largely divided into a selection phase 210, a ping phase 220, and a configuration phase 230, and a power transfer phase 240.
- the selection step 210 may be a phase transition when a specific error or a specific event is detected while initiating a power transmission or maintaining a power transmission.
- the specific error and the specific event will become clear through the following description.
- the transmitter may monitor whether an object is present on the interface surface. If the transmitter detects that an object is placed on the interface surface, it can transition to the step 220 (S201). In the selection step 210, the transmitter transmits an analog ping signal of a very short pulse and can detect whether an object exists in the active area of the interface surface based on the current change of the transmission coil.
- step 220 the transmitter activates the receiver when an object is detected, and transmits a digital ping to identify whether the receiver is a WPC compliant receiver. If the transmitter does not receive a response signal to the digital ping (e.g., a signal strength indicator) from the receiver in step 220, then the transmitter may transition back to the selection step 210 (step S202). In addition, in the step 220, when the transmitter receives a signal indicating completion of power transmission from the receiver, that is, a charge completion signal, the transmitter may transition to the selection step 210 (S203).
- a signal indicating completion of power transmission from the receiver that is, a charge completion signal
- the transmitter may transition to an identification and configuration step 230 to collect receiver identification and receiver configuration and status information (S204).
- the transmitter determines whether a packet is received or unexpected, a desired packet is not received for a predefined period of time (time out), a packet transmission error (transmission error) (No power transfer contract), the process can be shifted to the selection step 210 (S205).
- the transmitter may transition to power transfer step 240, which transmits wireless power (S206).
- the transmitter may receive an unexpected packet, a desired packet is not received for a predefined period of time (time out), a violation of a predetermined power transmission contract occurs transfer contract violation, and if the charging is completed, the selection step 210 can be transited (S207).
- step 240 if the transmitter needs to reconfigure a power transfer contract based on transmitter state changes, etc., it may transition to identification and configuration step 230 (S208).
- the power transmission contract may be set based on the status and characteristic information of the transmitter and the receiver.
- the transmitter status information may include information on the maximum amount of transmittable power, information on the maximum number of receivable receivers, and the receiver status information may include information on the requested power and the like.
- FIG. 3 is a state transition diagram for explaining a second wireless power transmission procedure defined in the WPC standard.
- power transmission from a transmitter to a receiver according to a second wireless power transmission procedure of the WPC standard is largely divided into a selection phase 310, a ping phase 320, and Configuration Phase 330, a Negotiation Phase 340, a Calibration Phase 350, a Power Transfer Phase 360, and a Renegotiation Phase 370 .
- the selection step 310 includes a step of transitioning, e.g., S302, S304, S308, S310, S312, when a specific error or a specific event is detected while initiating a power transmission or maintaining a power transmission .
- the specific error and the specific event will become clear through the following description.
- the transmitter may monitor whether an object is present on the interface surface. If the transmitter detects that an object has been placed on the interface surface, it can transition to the zipping step 320. In the selection step 310, the transmitter transmits an analog ping signal of a very short pulse and, based on the current change of the transmission coil or the primary coil, It is possible to detect whether or not there is an error.
- the wireless power transmitter may measure the quality factor of the wireless power resonant circuit, e.g., the transmit coil and / or the resonant capacitor for wireless power transmission.
- a wireless power transmitter may measure the inductance of a wireless power resonant circuit (e.g., a power transfer coil and / or a resonant capacitor).
- a wireless power resonant circuit e.g., a power transfer coil and / or a resonant capacitor.
- the quality factor and / or inductance may be used in future negotiation step 340 to determine whether a foreign object is present.
- step 320 the transmitter wakes up the receiver and transmits a digital ping to identify whether the object is a wireless power receiver in step S301. If the transmitter does not receive a response signal to the digital ping (e. G., A signal strength packet) from the receiver at step 320, then it may transition back to step 310 again. If the transmitter receives a signal indicating completion of power transmission from the receiver (i.e., a charge completion packet) in the step 320, the flow may proceed to the selection step 310 (S302).
- a response signal to the digital ping e. G., A signal strength packet
- the transmitter may transition to an identification and configuration step 330 for identifying the receiver and collecting receiver configuration and status information (S303).
- the transmitter determines whether a packet is received or unexpected, a desired packet is received for a predefined period of time (time out), a packet transmission error (transmission error) (No power transfer contract), the process can be shifted to the selection step 310 (S304).
- the transmitter may determine whether an entry to the negotiation step 340 is required based on the negotiation field value of the configuration packet received in the identification and configuration step 330.
- the transmitter may enter the negotiation step 340 (S305).
- the transmitter may perform a predetermined FOD detection procedure.
- the transmitter may directly enter the power transmission step 360 (S306).
- the sender may receive a Foreign Object Detection (FOD) status packet including a reference quality factor value. Or a FOD state packet including a reference inductance value. Or a status packet including a reference quality factor value and a reference inductance value.
- FOD Foreign Object Detection
- the transmitter can determine a quality factor threshold for FO detection based on the reference quality factor value.
- the transmitter can determine the inductance threshold for FO detection based on the reference inductance value.
- the transmitter can detect whether there is an FO in the fill area using the quality factor threshold for the determined FO detection and the currently measured quality factor value, e.g., the quality factor value measured prior to the ping step, Power transmission can be controlled according to the detection result. As an example, if FO is detected, power transmission may be interrupted, but is not limited to this.
- the transmitter can detect whether there is an FO in the charging region using the inductance threshold for the determined FO detection and the currently measured inductance value - e.g., the inductance value measured before the ping phase -
- the power transmission can be controlled. As an example, if FO is detected, power transmission may be interrupted, but is not limited to this.
- the transmitter may return to the selection step 310 (S308). On the other hand, if no FO is detected, the transmitter may enter the power transfer step 360 via the correction step 350 (S307 and S309).
- the transmitter determines the strength of the power received at the receiving end in the correcting step 350 and determines the power loss at the receiving end and the transmitting end to determine the strength of the power transmitted at the transmitting end Can be measured. That is, the transmitter can predict the power loss based on the difference between the transmitting power of the transmitting end and the receiving power of the receiving end in the correcting step (350).
- a transmitter may compensate the threshold for FOD detection by reflecting the predicted power loss.
- the transmitter determines whether an unexpected packet is received, a desired packet is received for a predefined period of time (time out), a violation of a predetermined power transmission contract occurs transfer contract violation, and if the charging is completed, the selection step 310 can be performed (S310).
- step 360 if the transmitter needs to reconfigure the power transfer contract according to transmitter condition changes, it may transition to renegotiation step 370 (S311). At this time, if the renegotiation is normally completed, the transmitter may return to the power transmission step 360 (S313).
- the power transmission contract may be set based on the status and characteristic information of the transmitter and the receiver.
- the transmitter status information may include information on the maximum amount of transmittable power, information on the maximum number of receivable receivers, and the receiver status information may include information on the requested power and the like.
- the transmitter stops transmitting power to the receiver and may transition to the selection step 310 (S312).
- FIG. 4 is a block diagram illustrating a structure of a wireless power transmitter according to an exemplary embodiment of the present invention.
- the wireless power transmitter 400 includes a power conversion unit 410, a power transmission unit 420, a communication unit 430, a control unit 440, a sensing unit 450, a storage unit 470, A display unit 480, and an audio output unit 490.
- a power conversion unit 410 for converting power to electricity
- a power transmission unit 420 for transmitting power
- a communication unit 430 for communicating with a communication
- a control unit 440 includes a control unit 440, a sensing unit 450, a storage unit 470, A display unit 480, and an audio output unit 490.
- the power conversion unit 410 may convert the power to a predetermined intensity.
- the power conversion unit 410 may include a DC / DC conversion unit 411 and an amplifier 412.
- the DC / DC converting unit 411 may convert DC power supplied from the power supply unit 460 into DC power having a specific intensity according to a control signal of the controller 440.
- the amplifier 412 can adjust the intensity of the DC / DC-converted power according to the control signal of the controller 440.
- the control unit 440 may receive the power reception status information and / or the power control signal of the wireless power receiver through the communication unit 430 and may receive the power control information based on the received power reception status information and / So that the amplification factor of the amplifier 412 can be dynamically adjusted.
- the power reception status information may include, but is not limited to, the intensity information of the rectifier output voltage, the intensity information of the current applied to the reception coil, and the like.
- the power control signal may include a signal for requesting power increase, a signal for requesting power reduction, and the like.
- the power transmitting unit 420 may include a driving unit 421 and a transmitting coil 422.
- the driving unit 421 may include a multiplexer (or a multiplexer) (not shown), a carrier generator (not shown) for generating a specific duty ratio and a specific duty ratio for power transmission.
- the carrier generator may generate a specific frequency for converting the output DC power of the amplifier 412 delivered via the multiplexer to AC power having a particular frequency.
- the AC signal generated by the carrier generator is mixed with the output of the multiplexer 621 to generate AC power. However, this is only an example, It should be noted that they may be mixed only or later.
- the frequency of the AC power transmitted to each of the transmission coils according to the embodiment may be different from each other, and another embodiment may be implemented by using a predetermined frequency controller having a function of adjusting the LC resonance characteristic for each transmission coil differently
- the resonance frequency of each of the transmission coils may be the same or different.
- the power transmitting unit 420 includes a multiplexer of the driving unit 421 for controlling the output power of the amplifier 412 to be transmitted to the transmitting coil, and a plurality of transmitting coils 422, 1 th to n th transmit coils.
- the sensing unit 450 may include at least one of a current sensor, a voltage sensor, and a temperature sensor.
- the sensing unit 450 may measure the driving current of the DC-converted power at the power changing unit 410 using the current sensor, and provide the measured driving current to the controller 440.
- the sensing unit 450 may measure the driving voltage of the DC-converted power at the power changing unit 410 using the voltage sensor, and provide the driving voltage to the controller 440.
- the sensing unit 450 may measure the internal temperature of the wireless power transmitter 400 to determine whether overheating occurs using the temperature sensor, and provide the measurement result to the controller 440.
- control unit 440 may be configured to calculate the driving current value, the driving voltage value, and the internal temperature value measured by the sensing unit 450 in the power transmission step according to the first wireless power transmission procedure of FIG. It is possible to determine whether or not the state is the first charging power limitation state.
- the controller 440 may use the received power value of the wireless power receiver to determine the first charging power limit state.
- the charging mode has a first charging mode according to the power transfer contract and a second charging mode in which the intensity of the transmission power is larger than the first charging mode. A more detailed description of the charging mode will be given later.
- the first charging power limiting state may be a state in which the wireless power transmitter is constrained to perform charging at a specific charging power level.
- a more detailed description of the first charging power limiting state may be made by the wireless charging method of the wireless power transmitter described later.
- the controller 440 may change the charging mode to the first charging mode.
- a more detailed description of the charging mode change may be made by the wireless charging method of the wireless power transmitter described below.
- the controller 440 may control the operation of the first wireless power transmission process based on one or more values of the driving current value, the driving voltage value, and the internal temperature value measured by the sensing unit 450 in the power transmission step according to the first wireless power transmission procedure of FIG. It is possible to judge whether or not the state is the second charging power limitation state.
- the controller 440 may use the received power value of the wireless power receiver to determine the second charging power limit state.
- the second charging power limiting state may be a state in which the wireless power transmitter must stop transmitting power. A more detailed description of the second charging power limiting state may be made by the wireless charging method of the wireless power transmitter described later.
- the controller 440 can stop the power transmission.
- control unit 440 may be configured to calculate the driving power based on at least one of the driving current value, the driving voltage value, and the internal temperature value measured by the sensing unit 450 in the power transmission step according to the second wireless power transmission procedure of FIG. It is possible to determine whether or not the state is the first charging power limitation state.
- the controller 440 may use the received power value of the wireless power receiver to determine the first charging power limit state. That is, the first charging power limitation state determination method of another example may be the same as the first charging power limitation state determination method of the above example.
- the guaranteed power may be a power intensity value determined by the wireless power transmitter and the wireless power receiver to transmit upon wireless charging in the power transfer phase by a power transfer agreement. A detailed description of the guaranteed power will be given later.
- the first charging power limiting state may be a state limited to perform charging at a specific charging power level. A more detailed description of the first charging power limiting state may be made by the wireless charging method of the wireless power transmitter described later.
- the control unit 440 changes the power transmission contract change to the second guaranteed power whose guaranteed power value is relatively small Can be performed. A more detailed description of a power transfer contract change may be provided by the wireless charging method of the wireless power transmitter described below.
- the controller 440 may control the power of the mobile station based on at least one of the driving current value, the driving voltage value, and the internal temperature value measured by the sensing unit 450 in the power transmission step according to the second wireless power transmission procedure of FIG. It is possible to judge whether or not the state is the second charging power limitation state.
- the controller 440 may use the received power value of the wireless power receiver to determine the second charging power limit state. That is, the method for determining the second charging power limitation state of another example may be the same as the second charging power limitation state determination method described above.
- the second charging power limitation state may be a state in which the power transmission must be stopped. A more detailed description of the second charging power limiting state may be made by the wireless charging method of the wireless power transmitter described later.
- the controller 440 determines that the second charging power limitation state is being performed during the charging operation with the second guarantee power, the controller 440 can stop the power transmission.
- the storage unit 470 may store the threshold power, the threshold current, the threshold voltage, the critical temperature, and the like used for determining the first charging power limiting state or the second charging power limiting state.
- the storage unit 470 may store the first charging power limitation state information before reconnection, which is used to change the charging mode or the power transmission contract, and the like.
- the display unit 480 can convert the information processed by the control unit 440 into an optical signal from an electrical signal and display the optical signal. More specifically, the display unit 480 can display the charging performance information of the wireless power transmitter 400 so that it can be visually recognized.
- the display portion 480 may be an LED, but is not limited thereto.
- the charging information may be charging mode information in accordance with the first wireless power transmission procedure and may be guaranteed power information in accordance with the second wireless power transmission procedure.
- the display unit 480 may emit a white LED when the wireless power transmitter 400 performs charging with the first charging mode or the second charging power.
- the display unit 480 may emit a blue LED when the wireless power transmitter 400 performs charging in the second charging mode or the first ensured power.
- the display unit 480 can emit a red LED. Accordingly, the present invention can visually indicate charging performance information of a wireless power transmitter. In addition, the present invention according to the embodiment can easily visualize the charging performance information and identify a problem occurring during wireless charging.
- the sound output unit 490 can convert the information processed by the control unit 440 into an audio signal from an electric signal and output the audio signal. More specifically, the sound output unit 490 may output sound so that the charging performance information of the wireless power transmitter 400 may be audibly perceived.
- the sound output section 490 may be a speaker.
- the charging information may be charging mode information in accordance with the first wireless power transmission procedure and may be guaranteed power information in accordance with the second wireless power transmission procedure.
- the sound output unit 490 can be output when the wireless power transmitter 400 performs charging with the first charging mode or the second guarantee power, while halting generation and interruption of the beep sound.
- the sound output unit 490 may continuously output the occurrence of the beep sound when the wireless power transmitter 400 performs the charging with the second charge mode or the first guaranteed power. Also, the audio output unit 490 can stop the audio output when the wireless power transmitter 400 stops transmitting power. Therefore, the present invention according to the embodiment can display the charging performance information of the wireless power transmitter audibly. In addition, the present invention according to the embodiment can easily identify the problem occurring during wireless charging by audibly indicating the charging performance information.
- the control unit 440 may transmit power by time division multiplexing for each transmission coil when a plurality of wireless power receivers are connected. For example, in a wireless power transmitter 400, three wireless power receivers - i.e., first through third wireless power receivers - are identified via three different transmit coils, i.e., first through third transmit coils, respectively.
- the control unit 440 controls the multiplexer of the driving unit 421 to control power to be transmitted through a specific transmission coil in a specific time slot. At this time, the amount of power transmitted to the corresponding wireless power receiver can be controlled according to the length of the time slot allocated for each transmission coil, but this is only one embodiment.
- the amplification rate of the amplifier 412 of the wireless power receiver may be controlled to control the transmission power of each wireless power receiver.
- the control unit 440 may control the multiplexer of the driving unit 421 so that the sensing signals may be sequentially transmitted through the first through n'th transmission coils 422 during the first sensing signal sending procedure. At this time, the control unit 440 can identify the time at which the sensing signal is transmitted using the timer 455. When the sensing signal transmission time arrives, the controller 440 controls the multiplexer 421 to output a sensing signal It can be controlled to be transmitted. For example, the timer 450 may transmit a specific event signal to the control unit 440 at predetermined intervals during the ping transmission step. When the event signal is detected, the control unit 440 controls the multiplexer 421 to transmit the corresponding event signal It is possible to control the digital ping to be transmitted through the coil.
- control unit 440 transmits a predetermined transmission coil identifier for identifying a signal strength indicator (Signal Strength Indicator) through a transmission coil from the demodulation unit 432 during the first detection signal transmission procedure, Lt; / RTI > received signal strength indicator.
- the controller 440 controls the multiplexer of the driving unit 421 so that the signal strength indicator can be transmitted through the transmission coil (s) Control.
- the control unit 440 transmits the received transmit coil with the signal strength indicator having the largest value as the second differential sense signal
- the detection signal may be determined as the transmission coil to be transmitted first, and the multiplexer of the driving unit 421 may be controlled according to the determination result.
- the modulator 431 modulates the control signal generated by the controller 440 and transmits the modulated signal to the driver 421.
- the modulation scheme for modulating the control signal includes a frequency shift keying (FSK) modulation scheme, a Manchester coding modulation scheme, a phase shift keying (PSK) modulation scheme, a pulse width modulation scheme, A differential bi-phase modulation method, and the like.
- the demodulator 432 can demodulate the detected signal and transmit the demodulated signal to the controller 440 when a signal received through the transmission coil is detected.
- the demodulated signal includes a reception power indicator, a signal strength indicator, an identification indicator, a configuration indicator, an error correction (EC) indicator for power control during wireless power transmission, an end of charge indicator (EOC) / Overcurrent / overheat indicator, and the like, but it is not limited thereto, and various status information for identifying the status of the wireless power receiver may be included.
- the demodulation unit 432 can identify which demodulated signal is received from which transmission coil, and provide the control unit 440 with a predetermined transmission coil identifier corresponding to the identified transmission coil.
- the wireless power transmitter 400 may acquire the signal strength indicator through in-band communication using the same frequency used for wireless power transmission to communicate with the wireless power receiver.
- the wireless power transmitter 400 can transmit wireless power using the transmit coil 422, as well as exchange various information with the wireless power receiver via the transmit coil 422.
- the wireless power transmitter 400 may further include a separate coil corresponding to each of the transmit coil 422 (i.e., first to n < th > transmit coils) It should be noted that it may also perform in-band communication with the receiver.
- the wireless power transmitter 400 and the wireless power receiver perform in-band communication.
- the wireless power transmitter 400 is only one embodiment, Directional communication through different frequency bands.
- the near-end bi-directional communication may be any one of low-power Bluetooth communication, RFID communication, UWB communication, and Zigbee communication.
- FIG. 5 is a block diagram illustrating a structure of a wireless power receiver interworking with the wireless power transmitter according to FIG.
- the wireless power receiver 600 includes a receiving coil 610, a rectifier 620, a DC / DC converter 630, a load 640, a sensing unit 650, 660, and a main control unit 670, as shown in FIG.
- the communication unit 660 may include at least one of a demodulation unit 661 and a modulation unit 662.
- the communication unit 660 may provide short-range bidirectional communication through a frequency band different from the frequency band used for wireless power signal transmission.
- the AC power received via the receive coil 610 may be delivered to the rectifier 620.
- the rectifier 620 may convert the AC power to DC power and transmit it to the DC / DC converter 630.
- the DC / DC converter 630 may convert the intensity of the rectifier output DC power to a specific intensity required by the load 640 and then deliver it to the load 640.
- the receiving coil 610 may be configured to include a plurality of receiving coils (i.e., first through n-th receiving coils).
- the frequency of the AC power transmitted to each of the reception coils (not shown) may be different from each other, and another embodiment may include a predetermined frequency controller having a function of adjusting LC resonance characteristics for different reception coils
- the resonance frequencies of the respective reception coils can be set differently.
- the sensing unit 650 may measure the intensity of the DC power output from the rectifier 620 and may provide it to the main control unit 670. Also, the sensing unit 650 may measure the intensity of the current applied to the reception coil 610 according to the wireless power reception, and may transmit the measurement result to the main control unit 670. Also, the sensing unit 650 may measure the internal temperature of the wireless power receiver 600 and provide the measured temperature value to the main control unit 670.
- the main control unit 670 may compare the measured rectifier output DC power with a predetermined reference value to determine whether an overvoltage is generated. As a result of the determination, when an overvoltage is generated, a predetermined packet indicating that an overvoltage has occurred can be generated and transmitted to the modulating unit 662.
- the signal modulated by the modulating unit 662 can be transmitted to the wireless power transmitter through the receiving coil 610 or a separate coil (not shown).
- the main control unit 670 can determine that the detection signal is received when the intensity of the rectifier output DC power is equal to or greater than a predetermined reference value.
- the signal intensity indicator corresponding to the detection signal is received by the modulation unit 662 To be transmitted to the wireless power transmitter.
- the demodulation unit 661 demodulates the AC power signal between the reception coil 610 and the rectifier 620 or the DC power signal output from the rectifier 620 to identify whether or not the detection signal is received and outputs the identification result to the main control unit 670.
- the main control unit 670 may control the signal intensity indicator corresponding to the detection signal to be transmitted through the modulation unit 662.
- FIG. 6 is a diagram for explaining a modulation and demodulation method of a wireless power signal according to an embodiment.
- FIG. 1 a method of encoding a packet to be transmitted will be described in detail with reference to FIGS. 1 to 5.
- the wireless power signal when the wireless power transmitter 10 or the wireless power receiver 20 does not transmit a specific packet, the wireless power signal is modulated with modulation having a specific frequency, May be an alternating current signal.
- the wireless power transmitting terminal 10 or the wireless power receiving terminal 20 transmits a specific packet, the wireless power signal may be an alternating signal modulated by a specific modulation method, as shown in FIG.
- the modulation scheme may include, but is not limited to, an amplitude modulation scheme, a frequency modulation scheme, a frequency and amplitude modulation scheme, a phase modulation scheme, and the like.
- the binary data of the packet generated by the wireless power transmitting terminal 10 or the wireless power receiving terminal 20 may be subjected to differential bi-phase encoding as shown in reference numeral 720.
- the differential two-stage encoding has two state transitions to encode data bit one and one state transition to encode data bit zero. That is, the data bit 1 is encoded such that the transition between the HI state and the LO state occurs at the rising edge and the falling edge of the clock signal, and the data bit 0 is at the rising edge of HI State and the LO state may be encoded to occur.
- a byte encoding technique includes a start bit and a stop bit for identifying a start and a type of a bitstream of an 8-bit encoded binary bitstream, , And a parity bit for detecting whether or not an error has occurred in the bitstream (byte).
- FIG. 7 is a diagram for explaining a packet format according to an embodiment of the first wireless power transmission procedure.
- a packet format 800 used for information exchange between the wireless power transmitting terminal 10 and the wireless power receiving terminal 20 includes a function of acquiring synchronization for demodulating the packet and identifying an accurate start bit of the packet
- a header (Header) 820 field for identifying a type of a message included in the packet
- preamble field 810 for transmitting a message (Message, 830) field
- a checksum (840) field for identifying whether an error has occurred in the packet.
- the packet receiving end may identify the size of the message 830 included in the packet based on the header 820 value.
- header 820 may be defined for each step of the wireless power transmission procedure, and some of the header 820 values may be defined as different types of messages although they are the same value at different stages.
- the message 830 includes data to be transmitted at the transmitting end of the packet.
- the data included in the message 830 field may be, but is not limited to, a report, a request, or a response to the other party.
- the packet 800 may further include at least one of transmitting end identification information for identifying a transmitting end that transmitted the packet and receiving end identifying information for identifying a receiving end to receive the packet.
- the transmitter identification information and the receiver identification information may include IP address information, MAC address information, product identification information, and the like.
- the present invention is not limited thereto.
- the packet 800 may further include predetermined group identification information for identifying the receiving group when the packet is to be received by a plurality of apparatuses.
- FIG. 8 is a diagram for explaining a message format of an identification packet according to an embodiment of the first wireless power transmission procedure.
- the message format of the identification packet includes a Version Information field, a Manufacturer Information field, an Extension Indicator field, and a Basic Device Identification Information field Lt; / RTI >
- revision version information of a standard applied to the wireless power receiving apparatus can be recorded.
- a predetermined identification code for identifying the manufacturer of the wireless power receiving apparatus may be recorded.
- the extension indicator field may be an indicator for identifying whether an extended identification packet including the extended device identification information exists. For example, if the value of the extension indicator is 0, it means that there is no extension identification packet, and if the extension indicator value is 1, it means that the extension identification packet exists after the identification packet.
- the device identifier for the corresponding wireless power receiver may be a combination of manufacturer information and basic device identification information.
- the device identifier for the wireless power receiver may be a combination of manufacturer information, basic device identification information, and extended device identification information.
- FIG. 9 is a diagram for explaining a message format of a configuration packet and a power control hold packet according to an embodiment of the first wireless power transmission procedure.
- the message format of the configuration packet may have a length of 5 bytes and may include a power class field, a maximum power field, a power control field, A count field, a window size field, a window offset field, and the like.
- the power rating field may record the power rating assigned to the wireless power receiver.
- the maximum power field may record the intensity value of the maximum power that can be provided at the rectifier output of the wireless power receiver.
- the maximum power amount Pmax desired to be provided at the rectifier output of the wireless power receiving apparatus can be calculated as (b / 2) * 10a.
- the power control field can be used to indicate which algorithm should be used to control the power in the wireless power transmitter. For example, if the power control field value is 0, it implies applying the power control algorithm defined in the standard, and if the power control field value is 1, it means that the power control is performed according to the algorithm defined by the manufacturer.
- the count field may be used to record the number of option configuration packets that the wireless power receiving device will send in the identification and configuration phase.
- the window size field may be used to record the window size for calculating the average received power.
- the window size may be a positive integer value that is greater than zero and has a unit of 4 ms.
- the window offset field information for identifying the time from the end of the average reception power calculation window to the transmission start point of the next received power packet (RPP) may be recorded.
- the window offset may be a positive integer value greater than zero and in units of 4 ms.
- the message format of the power control hold packet may be configured to include a power control hold time (T_delay).
- a plurality of power control hold packets may be transmitted during the identification and configuration phase. For example, up to seven power control pending packets may be transmitted.
- the power control hold time (T_delay) may have a value between a predefined power control hold minimum time (T_min: 5 ms) and a power control hold maximum time (T_max: 205 ms).
- T_min predefined power control hold minimum time
- T_max power control hold maximum time
- the wireless power transmission apparatus can perform power control using the power control retention time of the power control retention packet last received in the identification and configuration step. Also, the wireless power transmission apparatus can use the T_min value as the T_delay value when the power control hold packet is not received in the identification and configuration step.
- the power control retention time may refer to the time that the wireless power transmission apparatus should wait without performing the power control before performing the actual power control after receiving the latest control error packet.
- FIG. 10 is a diagram for explaining a type of a packet that can be transmitted in a power transmission step and a message format thereof by a wireless power receiving apparatus according to an embodiment of the first wireless power transmission procedure.
- a packet that can be transmitted by the wireless power receiving apparatus in the power transmission step includes a control error packet (CEP), an end power transfer packet (RPP), a received power packet (RPP) A Charge Status Packet, a packet defined by the manufacturer, and the like.
- CEP control error packet
- RPP end power transfer packet
- RPP received power packet
- a Charge Status Packet a packet defined by the manufacturer, and the like.
- Reference numeral 1301 denotes a message format of a control error packet composed of a 1-byte control error value.
- the control error value may be an integer value ranging from -128 to +127. If the control error value is negative, the transmission power of the radio power transmission apparatus decreases, and if it is positive, the transmission power of the radio power transmission apparatus can be increased. If the control error value is 0, the output power of the wireless power transmitting apparatus may be increased or decreased.
- a control error packet (CEP) with a control error value of zero may be referred to as a stable control error packet.
- Reference numeral 1302 denotes a message format of an End Power Transfer Packet configured by a 1-byte End Power Transfer Code.
- Reference numeral 1303 denotes a received power packet of a received power packet (RPP) composed of a received power value of 1 byte.
- the received power value may be a power value at a particular point in time at the output of the wireless power receiver.
- the specific time may be any time when the battery is being charged by the power value of the output terminal of the wireless power receiver.
- the wireless power receiver can measure the power value of the output of the wireless power receiver every periodic time when charging of the battery is started.
- the measured power value may be included in the message format of the received power packet (RPP) as the received power value and transmitted periodically to the wireless power transmitter. Therefore, the wireless power transmitter can calculate the power energy based on the power value and the time interval included in the received power packet (RPP).
- the time interval may be a repeating period interval. Such power energy is calculated periodically, and the charge energy charged in the battery can be obtained by adding the calculated power energy. This will be described later in detail.
- Reference numeral 1304 denotes a message format of a Charge Status Packet consisting of a 1-byte Charge Status Value.
- the charge state value may indicate the battery charge amount of the wireless power receiving device.
- the charge state value 0 means a completely discharged state
- the charge state value 50 may mean a 50% charge state
- the charge state value 100 may mean a full charge state. If the wireless power receiving device does not include a rechargeable battery or can not provide charge state information, the charge state value may be set to OxFF.
- FIG. 11 shows a wireless charging system according to an embodiment.
- a wireless charging system may include a transmitter 1500, a receiver 1510, and a server 1520.
- the transmitter 1500 is an apparatus for transmitting wireless power, and includes a wireless power transmitter, a wireless power transmitter, a transmitter, a transmitter, a transmitter, a transmitter, a wireless power transmitter, a wireless power transmitter, It can be one.
- the receiver 1510 may be one of a wireless power receiving device, a wireless power receiver, a receiving terminal, a receiving side, a receiving device, and a receiver terminal.
- the server 1520 is a billing server or a management server for managing and managing billing for power charging, and includes an access point (AP), a cloud server, a cloud computing, a platform server, Server, or an integrated server.
- AP access point
- cloud server a cloud computing
- platform server a platform server
- Server or an integrated server.
- the transmitter 1500 and the receiver 1510 may be connected to a power and / or power controller according to a method defined by the Wireless Power Consortium (WPC) and the Air Fuel Alliance (formerly PMA, Power Matters Alliance or Alliance For Wireless Power) And / or send / receive data.
- WPC Wireless Power Consortium
- Air Fuel Alliance formerly PMA, Power Matters Alliance or Alliance For Wireless Power
- the transmitter 1500 or the receiver 1510 may be plural.
- the server 1520 may be one or more than one. When there are a plurality of servers 1520, data and information can be shared among the servers 1520.
- the server 1520 can receive and store the transmission identifier information capable of identifying each of the plurality of transmitters 1500 from each of the plurality of transmitters 1500.
- the server 1520 can receive and store the reception identifier information capable of identifying each of the plurality of receivers 1510 from the plurality of receivers 1510, respectively.
- the server 1520 receives specification information and status information of each transmitter from each of the plurality of transmitters 1500, and stores and manages the specification information and the status information.
- the server 1520 can receive usage information and status information of each receiver from each of the plurality of receivers 1510, and can store and manage the received information.
- the server 1520 can generate a control signal or command for controlling the transmitter 1500 based on the transmission identifier information, specification information of each transmitter, and status information.
- the server 1520 may generate a control signal or command for controlling the receiver 1510 based on the reception identifier information and the usage information and status information of each receiver.
- the server 1520 receives the power energy information charged in the battery of the receiver 1510 by the wireless power of the transmitter 1500 from the transmitter 1500, calculates the charge based on the power energy information And provide billing information to the corresponding receiver 1510.
- the server 1520 receives the power energy information charged in the battery of the receiver 1510 from the receiver 1510, calculates the charge based on the power energy information, and provides the charge information to the receiver 1510 can do.
- the server 1520 receives the power energy information charged in the battery of the receiver 1510 by the wireless power of the transmitter 1500 from the transmitter 1500 and receives the power energy information of the receiver 1510,
- the accumulated power energy information or the accumulated billing information for each week, month, and year may be calculated and provided to the corresponding receiver 1510.
- the server 1520 receives the power energy information to be charged in the battery of the corresponding receiver 1510 from the receiver 1510 and receives the cumulative power energy information for the predetermined period of the corresponding receiver 1510, Or the accumulated charge information may be provided to the corresponding receiver 1510.
- the server 1520 may generate various other control signals or commands.
- the method of calculating the charge includes a method in which the transmitter 1500 calculates the charge, a method in which the server 1520 calculates the charge, and a method in which the receiver 1510 calculates the charge.
- FIG. 12 is a flowchart for explaining a method of charging a charge according to the first embodiment in the wireless charging system.
- the transmitter 1500 can check whether charging of the battery of the receiver 1510 is started (S1601).
- the power transfer phase 240 may be entered.
- the receiver 1510 may check the status of the battery of the receiver 1510 and provide the result of the check to the transmitter 1500.
- the check result information may be information on the remaining charge amount of the battery or the amount of electric power required to be charged.
- the transmitter 1500 starts charging according to the result of the check regarding the state of the battery provided from the receiver 1510. [
- the transmitter 1500 can generate wireless power using the transmission coil and transmit the generated wireless power to the receiver 1510 (S1604).
- the receiver 1510 may convert the wireless power received from the transmitter 1500 and charge the battery.
- the receiver 1510 detects a power value provided by the battery, generates a received power value (hereinafter referred to as RPV), generates a received power packet RPP including the generated received power value RPV, (S1607).
- the power value may be an analog power value.
- the receiver 1510 can detect the power value at regular intervals while the battery is being charged.
- the received power value RPV may be, for example, a digital signal having 8 bits.
- the analog power values corresponding to the values of the digital signals can be set in advance so as to correspond to each other. For example, when the received power value (RPV) is 00010000, the analog power value may correspond to 3.5W. For example, when the received power value (RPV) is 00001000, the analog power value may correspond to 2.2W. This analog power value can be calculated later by the transmitter 1500 in correspondence with the corresponding digital signal.
- the analog power value may be detected at the output of the receiver 1510. Specifically, the analog power value can be detected at the output of the rectifier 620 or at the output of the DC / DC converter 630, as shown in FIG.
- the receiver 1510 may provide the generated received power packet RPP to the transmitter 1500 (S1610).
- the receiver 1510 may provide the received power packet RPP to the transmitter 1500 at regular intervals while the power value is detected.
- a certain period in which a power value is detected and a certain period in which a received power packet (RPP) is provided to the transmitter 1500 may have the same period interval.
- the received power packet RPP may be a constant period provided to the transmitter 1500 as well as 10 ⁇ ⁇ .
- the transmitter 1500 may extract the received power value RPV from the received received power packet RPP (S1613). In addition, the transmitter 1500 may measure or detect the period interval at which these received power packets RPP are provided based on the currently provided received power packet RPP and the next received received power packet RPP (S1616 ). This periodic interval may be equal to a certain period during which the received power packet (RPP) is provided to the transmitter 1500.
- the transmitter 1500 can calculate the power energy by multiplying the extracted reception power value (RPV) by the period interval (S1619).
- the receiver 1510 can check whether the battery is charged by checking the state of the battery (S1622).
- the receiver 1510 may continuously request a wireless power transmission to the transmitter 1500.
- the transmitter 1500 continuously transmits wireless power to the receiver 1510, and the receiver 1510 can continuously charge the battery.
- the receiver 1510 may provide a received power packet (RPP) including the received power value (RPV) to the transmitter 1500 at regular intervals.
- the transmitter 1500 can extract the received power value RPV from the received power packet RPP provided every predetermined period and calculate the power energy with respect to the extracted received power value RPV. The calculated power energy can be acquired until the charging is completed.
- the receiver 1510 may provide information to the transmitter 1500 indicating that the charging is complete (S1625).
- the transmitter 1500 confirms that the charging of the receiver 1510 is completed, and can calculate the accumulated power energy based on the calculated power energy (S1628).
- a received power value RPP may be periodically provided from the receiver 1510 to the transmitter 1500 after charging starts.
- the received power value RPP may be included in the received power packet RPP.
- a second received power packet (2nd RPP) including a second received power value is provided after a first received power packet (1st RPP) including a first received power value and after a first period interval (t1) .
- a third received power packet (3rd RPP) including a third received power value may be provided after the second period interval t2.
- n-th received power packet (nth RPP) including the n-th received power value can be provided.
- nth received power packet (nth RPP) including the nth received power value is provided, no received power packet is provided after that, so that the nth received power packet (nth RPP) There is no gap.
- the accumulated power energy can be calculated based on the received power value (RPV) included in each received power packet (RPP) and the period interval.
- the cumulative power energy can be calculated by the following equation.
- the cumulative power energy Etotal can be calculated as shown in Equation (1).
- Equation (1) has been previously applied to the power energy calculation method. That is, the received power value (RPV) of the current received power packet (RPP) is multiplied by the period interval after the current received power value (RPV), and the power energy can be calculated.
- the cumulative power energy Etotal can be calculated as shown in Equation (2).
- Equation (2) differs from Equation (1) in the power energy calculation method. That is, the current received power value (RPV) is multiplied by the period interval before the current received power value (RPV), and the power energy can be calculated.
- the previous period interval t0 of the first received power value (1st RPP) may be the interval between the start of charging and the point at which the first received power value (1st RPP) is provided.
- the cumulative power energy Etotal can be calculated as shown in Equation (3).
- the cumulative power energy of Equation (3) can be calculated as an average value of adjacent power energies.
- the accumulated power energy calculated by Equation (3) may be the most accurate energy value required for charging the battery.
- the transmitter 1500 calculates a charge based on the calculated cumulative power energy (S1631), and can generate a charge bill based on the calculated charge.
- the transmitter 1500 may then provide the generated billing invoice with the transmitter information and receiver information to the server 1520 (S1637).
- the server 1520 may provide a billing request to the receiver 1510 based on the receiver information to charge the billing.
- the transmitter 1500 may further provide the server 1520 with battery charge date information in addition to transmitter information and receiver information.
- the transmitter 1500 may directly provide the generated billing invoice to the receiver 1510 (S1634), but this may optionally not be provided to the receiver 1510 as required. If a billing invoice is provided directly to the receiver 1510 at the transmitter 1500, the billing invoice may also be provided to the server 1520 along with the transmitter information and receiver information. When the charge is settled to the server 1520 by the receiver 1510, the server 1520 can easily confirm which of the receivers 1510 has been charged based on the already provided transmitter information and receiver information .
- the billing calculation may proceed in the server 1520.
- the transmitter 1500 provides the accumulated power energy information including the calculated accumulated power energy to the server 1520, and the server 1520 can calculate the billing based on the provided accumulated power energy information.
- the transmitter 1500 may calculate the cumulative power energy and provide it to the server 1520 and the server 1520 may charge the charge based on this cumulative power energy information, thus providing a clear criterion or standard give.
- the transmitter 1500 may calculate and provide the accumulated power energy to the server 1520 and the server 1520 may charge the billing based on this cumulative power energy information, so that the billing calculation and billing may be efficiently And you can optimize.
- a receive power packet may be provided to the transmitter 1500 even when the power is off, 1510 can be easily grasped.
- FIG. 14 is a flowchart illustrating a method for charging a charge according to the second embodiment in the wireless charging system.
- S1701, S1704, and S1707 are added instead of S1631, S1634, and S1637 of the first embodiment. Therefore, the method which is the same as that of the first embodiment will be omitted for convenience of explanation.
- cumulative power energies can be calculated by the transmitter 1500 in S1601 to S1628.
- the transmitter 1500 may transmit the transmitter information, the receiver information, and the accumulated power energy information of the receiver 1510 to the server 1520 (S1701).
- the server 1520 calculates a charge based on the cumulative power energy information (S1704), generates a charge bill based on the charge, and transmits the charge bill to the receiver 1510 (S1707).
- 15 is a flowchart for explaining a method for charging a charge according to the third embodiment in the wireless charging system.
- the receiver 1510 may check whether charging is started (S1801).
- the power transfer phase 240 may be entered.
- the state of the battery of the receiver 1510 is checked, and the result of the check is supplied to the transmitter 1500.
- the wireless power is received from the transmitter 1500, .
- the receiver 1510 may detect a power value supplied to the battery while the battery is being charged to generate a received power value (RPV) (S1804).
- the receiver 1510 can detect the power value at regular intervals while the battery is being charged.
- the received power value RPV may be, for example, a digital signal having 8 bits.
- the receiver 1510 can calculate the power energy by multiplying the generated reception power value (RPV) by the period interval (S1807).
- the periodic interval may be equal to a certain period.
- the receiver 1510 checks whether charging is completed (S1810), and the power energy can be continuously calculated until charging is completed.
- the receiver 1510 may calculate the cumulative power energy based on the continuously calculated power energy (S1813).
- the cumulative power energy can be calculated by one of the equations (1) to (3), as described above.
- the receiver 1510 may calculate the charge based on the calculated cumulative power energy (S1816).
- the receiver 1510 may provide the accounting information including the calculated billing to the server 1520 together with the receiver information (S1819).
- the server 1520 generates a billing bill based on the billing information (S1822), and provides the billing bill generated based on the addressee information to the receiver 1510 (S1825).
- the receiver 1510 may further provide the server 1520 with battery charge date information in addition to the receiver information.
- the billing calculation may proceed in the server 1520.
- the receiver 1510 provides the accumulated power energy information including the calculated accumulated power energy to the server 1520, and the server 1520 can calculate the billing based on the provided accumulated power energy information.
- the receiver 1510 may request the server 1520 to transmit power.
- the server 1520 may search for at least one or more transmitters 1500 capable of transmitting power to the receiver 1510 in response to such a request and transmit the transmitted power 1500 to the transmitter 1510,
- the controller 1500 controls the selected transmitter 1500 to supply power to the transmitter 1500 so that the transmitter 1500 is driven so that the transmitter 1500 transmits the wireless power to the receiver 1510. [ can do.
- the receiver 1510 may calculate the cumulative power energy and provide it to the server 1520 and the server 1520 may charge the billing based on this cumulative power energy information, thus providing a clear reference or standard give.
- the receiver 1510 may calculate and provide cumulative power energy to the server 1520 and the server 1520 may charge the billing based on this cumulative power energy information, so that the billing calculation and billing may be efficiently And you can optimize.
- a receive power packet may be provided to the transmitter 1500 even when the power is off, 1510 can be easily grasped.
- the receiver 1510 can directly calculate the cumulative power energy charged in the battery, the efficiency of the transmitter 1500 can be improved when the charging calculation is more accurate and the cumulative power energy is calculated at the transmitter 1500 It is possible to solve the unreasonableness that the more charging is calculated.
- the present invention can be used in the field of wireless power transmission and reception.
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- Business, Economics & Management (AREA)
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- Accounting & Taxation (AREA)
- Economics (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Development Economics (AREA)
- Finance (AREA)
- Strategic Management (AREA)
- Theoretical Computer Science (AREA)
- General Business, Economics & Management (AREA)
- Marketing (AREA)
- Health & Medical Sciences (AREA)
- Power Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Tourism & Hospitality (AREA)
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- Human Resources & Organizations (AREA)
- Water Supply & Treatment (AREA)
- Public Health (AREA)
- Entrepreneurship & Innovation (AREA)
- Game Theory and Decision Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
Claims (10)
- 송신기의 무선전력을 수신기의 배터리에 충전한 데 대한 무선충전 과금방법에 있어서,상기 수신기의 상기 배터리가 충전 중인 경우, 상기 수신기로부터 수신 파워 값을 포함하는 수신 전력 패킷을 주기적으로 수신하는 단계;상기 수신된 수신 파워 값을 바탕으로 누적 전력에너지를 산출하는 단계;상기 산출된 누적 전력에너지를 바탕으로 과금을 산출하는 단계; 및상기 산출된 과금을 서버로 전송하는 단계를 포함하는 무선충전 과금방법.
- 제1항에 있어서,상기 수신된 수신 파워 값을 바탕으로 상기 누적 전력에너지를 산출하는 단계는,상기 수신 파워 값이 주기적으로 수신될 때마다 상기 수신 파워 값과 주기 간격을 곱셈 연산하여 전력에너지를 지속적으로 산출하는 단계; 및상기 수신기의 상기 배터리의 충전이 완료되는 경우, 지속적으로 산출된 상기 수시 파워 값을 연산하여 상기 누적 전력에너지를 산출하는 단계를 포함하는 무선충전 과금방법.
- 제2항에 있어서,상기 주기 간격은 상기 수신 파워 값이 수신되기 이전의 주기 간격인 무선충전 과금방법.
- 제2항에 있어서,상기 주기 간격은 상기 수신 파워 값이 수신된 후의 주기 간격인 무선충전 과금방법.
- 제1항에 있어서,상기 수신 파워 값은 상기 수신기의 출력단에서 검출된 전력값을 바탕으로 생성되는 무선충전 과금방법.
- 송신기의 무선전력을 수신기의 배터리에 충전한 데 대한 무선충전 과금방법에 있어서,상기 수신기의 상기 배터리가 충전 중인 경우, 상기 수신기로부터 수신 파워 값을 포함하는 수신 전력 패킷을 주기적으로 수신하는 단계;상기 수신된 수신 파워 값을 바탕으로 누적 전력에너지를 산출하는 단계; 및과금이 산출되도록 상기 누적 전력에너지를 서버로 전송하는 단계를 포함하는 무선충전 과금방법.
- 제6항에 있어서,상기 수신된 수신 파워 값을 바탕으로 상기 누적 전력에너지를 산출하는 단계는,상기 수신 파워 값이 주기적으로 수신될 때마다 상기 수신 파워 값과 주기 간격을 곱셈 연산하여 전력에너지를 지속적으로 산출하는 단계; 및상기 수신기의 상기 배터리의 충전이 완료되는 경우, 지속적으로 산출된 상기 수시 파워 값을 연산하여 상기 누적 전력에너지를 산출하는 단계를 포함하는 무선충전 과금방법.
- 제7항에 있어서,상기 주기 간격은 상기 수신 파워 값이 수신되기 이전의 주기 간격인 무선충전 과금방법.
- 제7항에 있어서,상기 주기 간격은 상기 수신 파워 값이 수신된 후의 주기 간격인 무선충전 과금방법.
- 제6항에 있어서,상기 수신 파워 값은 상기 수신기의 출력단에서 검출된 전력값을 바탕으로 생성되는 무선충전 과금방법.
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KR20120011391A (ko) * | 2010-07-29 | 2012-02-08 | 권찬주 | 전력을 공급받는 유무선기기에 충전된 비용이 id소유자에게 부과되는 과금시스템 |
KR20150006499A (ko) * | 2013-07-08 | 2015-01-19 | 엘에스전선 주식회사 | 무선 충전 관리 서버, 무선 통신 충전 장치, 무선 충전 시스템 및 무선 충전 방법 |
KR20150008823A (ko) * | 2014-12-12 | 2015-01-23 | 주식회사 벨로스지 | 휴대용 이동 단말기의 무선 충전에 대한 과금 방법 및 과금 시스템 |
KR20150060297A (ko) * | 2013-11-26 | 2015-06-03 | 주식회사 옥타컴 | 무선기반 실시간 누적 전력량 모니터링 시스템 |
JP2016531538A (ja) * | 2013-07-17 | 2016-10-06 | コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. | 無線誘導電力伝送 |
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2017
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2018
- 2018-08-07 WO PCT/KR2018/008972 patent/WO2019035590A1/ko active Application Filing
Patent Citations (5)
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KR20120011391A (ko) * | 2010-07-29 | 2012-02-08 | 권찬주 | 전력을 공급받는 유무선기기에 충전된 비용이 id소유자에게 부과되는 과금시스템 |
KR20150006499A (ko) * | 2013-07-08 | 2015-01-19 | 엘에스전선 주식회사 | 무선 충전 관리 서버, 무선 통신 충전 장치, 무선 충전 시스템 및 무선 충전 방법 |
JP2016531538A (ja) * | 2013-07-17 | 2016-10-06 | コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. | 無線誘導電力伝送 |
KR20150060297A (ko) * | 2013-11-26 | 2015-06-03 | 주식회사 옥타컴 | 무선기반 실시간 누적 전력량 모니터링 시스템 |
KR20150008823A (ko) * | 2014-12-12 | 2015-01-23 | 주식회사 벨로스지 | 휴대용 이동 단말기의 무선 충전에 대한 과금 방법 및 과금 시스템 |
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