WO2018184573A1 - 无线充电装置、待充电设备及其控制方法 - Google Patents

无线充电装置、待充电设备及其控制方法 Download PDF

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Publication number
WO2018184573A1
WO2018184573A1 PCT/CN2018/081962 CN2018081962W WO2018184573A1 WO 2018184573 A1 WO2018184573 A1 WO 2018184573A1 CN 2018081962 W CN2018081962 W CN 2018081962W WO 2018184573 A1 WO2018184573 A1 WO 2018184573A1
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WIPO (PCT)
Prior art keywords
wireless
charging
circuit
wireless charging
charged
Prior art date
Application number
PCT/CN2018/081962
Other languages
English (en)
French (fr)
Inventor
万世铭
张加亮
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from PCT/CN2017/079784 external-priority patent/WO2018184230A1/zh
Priority claimed from PCT/CN2017/080334 external-priority patent/WO2018188006A1/zh
Priority to CA3051027A priority Critical patent/CA3051027C/en
Priority to SG11201906965SA priority patent/SG11201906965SA/en
Priority to AU2018249241A priority patent/AU2018249241B2/en
Priority to RU2019125331A priority patent/RU2724645C1/ru
Priority to BR112019016542-8A priority patent/BR112019016542B1/pt
Priority to JP2019553923A priority patent/JP6952127B2/ja
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to EP18780892.8A priority patent/EP3582361B1/en
Priority to KR1020197030203A priority patent/KR102335722B1/ko
Priority to CN201880005718.6A priority patent/CN110168844B/zh
Priority to MX2019009633A priority patent/MX2019009633A/es
Publication of WO2018184573A1 publication Critical patent/WO2018184573A1/zh
Priority to US16/530,585 priority patent/US11437848B2/en
Priority to ZA2019/06543A priority patent/ZA201906543B/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • 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
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00034—Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • G01R19/2506—Arrangements for conditioning or analysing measured signals, e.g. for indicating peak values ; Details concerning sampling, digitizing or waveform capturing
    • G01R19/2509—Details concerning sampling, digitizing or waveform capturing
    • 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
    • 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
    • H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
    • 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
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • 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
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • 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
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
    • 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
    • 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
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • 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
    • H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
    • 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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
    • 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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
    • H04B5/79—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for data transfer in combination with power transfer
    • 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
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20—Charging or discharging characterised by the power electronics converter
    • 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
    • H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
    • 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
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H02J7/0044—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction specially adapted for holding portable devices containing batteries
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

  • the present application relates to the field of wireless charging, and more particularly, to a wireless charging device, a device to be charged, and a control method thereof.
  • a wireless charging device such as a wireless charging dock
  • a wireless charging device typically uses a transmitting coil to transmit a wireless charging signal (electromagnetic signal).
  • the traditional transmitting coil is coiled by a multi-turn coil, but the traditional transmitting coil is designed in a single way, resulting in a wireless charging process that is not flexible enough.
  • the present application provides a wireless charging device, a device to be charged, and a control method thereof to improve flexibility of a wireless charging process.
  • a wireless charging device comprising: a wireless transmitting circuit; a transmitting coil having a plurality of pairs of connectors, and different connectors have different numbers of turns of the defined coil; and a control circuit for selecting and selecting from a plurality of pairs of connectors A pair of connectors electrically connected to the wireless transmitting circuit.
  • a device to be charged comprising: a receiving coil having a plurality of pairs of connectors, and different connectors having different numbers of turns of the defined coil; a wireless receiving circuit; and a control circuit for selecting and selecting from the plurality of pairs of connectors A pair of connectors electrically connected to the wireless receiving circuit.
  • a method for controlling a wireless charging device comprising: a wireless transmitting circuit; a transmitting coil having a plurality of pairs of connectors, and different connectors having different numbers of turns of the defined coil; : selecting a pair of connectors electrically connected to the wireless transmitting circuit from the plurality of pairs of connectors.
  • a method for controlling a device to be charged includes: a receiving coil having a plurality of pairs of connectors, and different connectors have different numbers of turns of the defined coil; a wireless receiving circuit; the control method includes : selecting a pair of connectors electrically connected to the wireless receiving circuit from the plurality of pairs of connectors.
  • the transmitting coil provided by the application has a plurality of pairs of joints, and the control circuit can select and switch between pairs of joints according to actual needs, thereby improving the flexibility of the wireless charging process.
  • FIG. 1 is a schematic structural diagram of a wireless charging apparatus according to an embodiment of the present application.
  • FIG. 2 is a diagram showing an example of the structure of a transmitting coil provided by an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a wireless charging apparatus according to another embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a wireless charging apparatus according to still another embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a device to be charged provided by an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a device to be charged according to another embodiment of the present application.
  • FIG. 7 is a schematic flowchart of a method for controlling a wireless charging device according to an embodiment of the present application.
  • FIG. 8 is a schematic flowchart of a method for controlling a device to be charged according to an embodiment of the present application.
  • the wireless charging device 10 mentioned in the embodiment of the present application may be a wireless charging base or a chip system.
  • the wireless charging device 10 provided by the embodiment of the present application is described in detail below with reference to FIG.
  • the wireless charging device 10 can include a wireless transmitting circuit 12, a transmitting coil 14, and a control circuit 16.
  • a wireless transmitting circuit 12 As shown in FIG. 1, the wireless charging device 10 can include a wireless transmitting circuit 12, a transmitting coil 14, and a control circuit 16.
  • the form and function of the device inside the wireless charging device 10 will be described in detail below.
  • the wireless transmitting circuit 12 can generate a wireless charging signal through the transmitting coil 14.
  • the wireless transmitting circuit 12 may include a high frequency oscillating circuit, and the wireless transmitting circuit 12 may generate a high frequency oscillating signal based on the high frequency oscillating circuit and transmit it outward through the transmitting coil 14 to form a wireless charging signal.
  • the transmitting coil 14 has a plurality of pairs of connectors (the wires are drawn at a certain position of the transmitting coil 14 to form a joint), and the different joints have different numbers of turns for the defined coil.
  • the specific location of the connector in the transmit coil 14 can be flexibly set according to actual needs, such as one or more of the following locations of the transmit coil 14: the home position, the end position, and any position in the middle.
  • Each pair of splices in the transmit coil 14 can define a coil having a certain number of turns.
  • a coil defined by a pair of joints refers to a coil having one of the pair of joints as a starting position and the other joint being a terminating position.
  • the number of the connector pairs included in the transmitting coil 14 is not specifically limited in the embodiment of the present application, and may include, for example, two pairs of connectors, or may include three pairs or even more pairs of interfaces.
  • Figure 2 shows one possible design of a transmitting coil.
  • the transmitting coil 14 includes three joints, that is, the joint 1, the joint 2, and the joint 3 shown in FIG.
  • the joint 2 is located at the starting position (or the innermost side) of the transmitting coil 14, the joint 1 is located at the end position (or the outermost side) of the transmitting coil 14, and the joint 3 is located at the intermediate position of the transmitting coil 14.
  • the transmitting coil 14 includes two pairs of joints, that is, a pair of joints formed by the joint 1 and the joint 2 (hereinafter referred to as a second pair of joints), and a pair of joints formed by the joint 2 and the joint 3 (hereinafter referred to as a first pair of joints) ).
  • the transmitting coil 14 as an N-turn coil as an example (N is a positive integer greater than 1)
  • N is a positive integer greater than 1
  • the joint 1 and the joint 2 are respectively located at the innermost and outermost sides of the transmitting coil 14
  • the joint 1 and the joint 2 define an N-turn coil (ie, The entire coil of the transmitting coil 14)
  • the joint 3 is located at an intermediate position of the transmitting coil 14, the number of turns of the coil defined by the joint 2 and the joint 3 is less than N.
  • Control circuit 16 can be used to select a pair of connectors that are electrically coupled to wireless transmit circuitry 12 from a plurality of pairs of connectors.
  • the wireless transmitting circuit 12 is electrically coupled to which of the plurality of pairs of contacts, and the wireless transmitting circuit 12 transmits a wireless charging signal outward through the coil defined by the pair of connectors electrically connected thereto. Still taking FIG. 2 as an example, if the wireless transmitting circuit 12 is electrically connected to the second pair of connectors (including the connector 1 and the connector 2), the wireless transmitting circuit 12 transmits a wireless charging signal through the entire transmitting coil 14 (including the N-turn coil). If the wireless transmitting circuit 12 is electrically coupled to the first pair of connectors (including the connector 2 and the connector 3), the wireless transmitting circuit 12 transmits a wireless charging signal outward through a coil (less than N ⁇ ) located between the connector 2 and the connector 3.
  • control circuit 16 may include a microcontroller unit (MCU) and a switching circuit that switches between different pairs of contacts under the control of the MCU.
  • MCU microcontroller unit
  • the control circuit 16 can be electrically connected to the wireless transmitting circuit 12 from a plurality of pairs of connectors in any manner, which is not limited in this embodiment of the present application. For example, the control circuit 16 can first operate with a pair of connectors that define a larger number of turns of the coil. If the heat generated by the wireless transmitting device 10 is too large, the control circuit 16 can operate with a pair of joints that define fewer coil turns. Reduce the heat generated during the work process.
  • the transmitting coil 14 provided by the embodiment of the present application has multiple pairs of connectors, and the control circuit 16 can select and switch between multiple pairs of connectors according to actual needs, thereby improving the flexibility of the wireless charging process.
  • the wireless charging device 10 supports a first wireless charging mode and a second wireless charging mode.
  • the wireless charging device 10 charges the charging device faster in the first wireless charging mode than the wireless charging device charges the charging device in the second wireless charging mode.
  • the wireless charging device 10 operating in the first wireless charging mode is filled with the time of the battery in the device 230 to be charged of the same capacity. Shorter.
  • the second wireless charging mode may be referred to as a normal wireless charging mode, and may be, for example, a conventional wireless charging based on a QI standard, a power matters alliance (PMA) standard, or an alliance for wireless power (A4WP) standard. mode.
  • the first wireless charging mode can be a fast wireless charging mode.
  • the normal wireless charging mode may refer to a wireless charging mode in which the wireless charging device 10 has a small transmitting power (usually less than 15 W, and the commonly used transmitting power is 5 W or 10 W). In the normal wireless charging mode, it is intended to completely fill a large capacity battery.
  • the wireless charging device 10 typically takes several hours; while in the fast wireless charging mode, the wireless charging device 10 has a relatively large transmit power (typically greater than or equal to 15 W). Compared with the normal wireless charging mode, the charging time required for the wireless charging device 220 to completely fill the same capacity battery in the fast wireless charging mode can be significantly shortened and the charging speed is faster.
  • the control circuit 16 can be configured to: when the wireless charging device 10 charges the device to be charged using the first wireless charging mode, control the first pair of connectors in the plurality of pairs to electrically connect with the wireless transmitting circuit, so that the wireless transmitting circuit 12 passes the first pair
  • the coil defined by the connector emits a wireless charging signal; when the wireless charging device 10 charges the device to be charged using the second wireless charging mode, the second pair of connectors in the plurality of pairs are electrically connected to the wireless transmitting circuit, so that the wireless transmitting circuit 12
  • a wireless charging signal is transmitted through a coil defined by the second pair of contacts; wherein the first pair of contacts defines a number of turns of the coil that is less than a number of turns defined by the second pair of contacts.
  • the second pair of joints corresponds to the joint 1 and the joint 2, which define all the coils of the transmitting coil 14; the first pair of joints corresponds to the joint 2 and the joint 3, which define A partial coil of the transmitting coil 14 is provided.
  • the control circuit 16 can control the wireless transmitting circuit 12 to be electrically connected to the connector 1 and the connector 2 such that the transmitting coil 14 as a whole is in an operating state; when the wireless charging device 10 When the first wireless charging mode is used to charge the device to be charged, the control circuit 16 can control the wireless transmitting circuit 12 to electrically connect the connector 2 and the connector 3 such that a portion of the coils in the transmitting coil 14 are in an active state.
  • the wireless charging device 10 operates in the first wireless charging mode, since the wireless charging device 10 has a faster charging speed in the first wireless charging mode, if the coil impedance in the working state is large, the heating phenomenon of the coil is prominent. .
  • the embodiment of the present application controls the first pair of joints to work, thereby reducing the impedance and heat generation of the coil in the working state (for the number of turns of the coil)
  • the decrease in inductance caused by less can be compensated by increasing the transmitting voltage, etc.; in the case where the wireless charging device 10 is in the second wireless charging mode, the embodiment of the present application controls the second pair of connectors to work.
  • the wireless charging device 10 can also be provided with circuits having other functions according to actual needs, which is not limited in this embodiment of the present application.
  • circuits having other functions which is not limited in this embodiment of the present application.
  • Several alternative implementations of the wireless charging device 10 are presented below in conjunction with Figures 3-4.
  • the wireless charging device 10 can also include a voltage conversion circuit 18.
  • the voltage conversion circuit 18 can be configured to receive an input voltage and convert the input voltage to obtain an input voltage and an input current of the wireless transmission circuit 12.
  • the control circuit 16 can also be used to wirelessly communicate with the device to be charged during wireless charging to adjust the transmit power of the wireless transmit circuit 12 such that the transmit power of the wireless transmit circuit 12 and the current desired charge of the battery of the device to be charged The voltage and / or charging current are matched.
  • the setting of the voltage conversion circuit 18 allows the wireless charging device 10 to adjust the voltage received by the wireless transmitting circuit 12 according to actual needs. For example, assume that the wireless charging device 10 desires to perform energy transfer using a high voltage and low current mode, which requires a higher input voltage (eg, 10V or 20V) of the wireless transmitting circuit 12 if the external power supply device provides maximum output. The voltage cannot reach the input voltage requirement of the wireless transmitting circuit 12, and the voltage conversion circuit 18 can be set such that the input voltage of the wireless transmitting circuit 12 cannot reach the desired input voltage. Of course, alternatively, if the output voltage of the external power supply device can reach the input voltage requirement of the wireless transmitting circuit 12, the voltage conversion circuit 18 can also be omitted to simplify the implementation of the wireless charging device 10.
  • a high voltage and low current mode which requires a higher input voltage (eg, 10V or 20V) of the wireless transmitting circuit 12 if the external power supply device provides maximum output.
  • the voltage cannot reach the input voltage requirement of the wireless transmitting circuit 12
  • the voltage conversion circuit 18
  • the wireless charging device 10 can also include a charging interface 13.
  • the charging interface 13 can be used to connect to an external power supply device 20, and the input voltage of the voltage conversion circuit 18 described above can be the voltage supplied by the power supply device 20 through the charging interface 13.
  • the control circuit 16 can also be used to communicate with the power supply device 20 to adjust the output voltage and/or output current of the power supply device 20 to adjust the transmit power of the wireless transmit circuit 12.
  • the charging interface 13 can be a universal serial bus (USB) interface.
  • the type of the charging interface 13 is not specifically limited in the present application.
  • the charging interface 13 can be a universal serial bus (USB) interface.
  • the USB interface can be, for example, a USB 2.0 interface, a micro USB interface, or a USB TYPE-C interface.
  • the charging interface 13 can also be a lightning interface, or any other type of parallel port and/or serial port that can be used for charging.
  • control circuit 16 may be connected to the power supply device 20 through a communication interface other than the charging interface, and communicate with the power supply device 20 through the communication interface.
  • control circuit 16 can communicate with the power supply device 20 in a wireless manner.
  • control circuit 16 can perform near field communication (NFC) with the power supply device 20.
  • NFC near field communication
  • control circuit 16 can communicate with the power supply device 20 through the charging interface 13 without the need to provide an additional communication interface or other wireless communication module, which simplifies the implementation of the wireless charging device 10.
  • the charging interface 13 is a USB interface
  • the control circuit 16 can communicate with the power supply device 20 based on data lines (such as D+ and/or D- lines) in the USB interface.
  • the charging interface 13 can be a USB interface (such as a USB TYPE-C interface) that supports a power delivery (PD) communication protocol, and the control circuit 16 and the power providing device 210 can communicate based on a PD communication protocol.
  • PD power delivery
  • the wireless charging device 10 shown in the embodiment of FIG. 3 receives the charging power through the external power supply device 20. Different from the embodiment of FIG. 3, the embodiment of FIG. 4 integrates the functions of the power supply device 20 inside the wireless charging device 10 to reduce the number of devices required for wireless charging and improve the integration of the wireless charging device 10.
  • the wireless charging device according to the embodiment of the present application is described in detail above.
  • the device to be charged provided by the embodiment of the present application is described in detail below with reference to specific embodiments.
  • the device to be charged may be a chip system or a terminal, and the “terminal” may include, but is not limited to, being configured to be connected via a wired line (eg, via a public switched telephone network (PSTN). ), digital subscriber line (DSL), digital cable, direct cable connection, and/or another data connection/network) and/or via (eg, for cellular networks, wireless local area networks, WLANs) ), a digital television network such as a handheld digital video broadcasting handheld (DVB-H) network, a satellite network, an amplitude modulation-frequency modulation (AM-FM) broadcast transmitter, and/or another communication
  • a device for receiving/transmitting a communication signal by a wireless interface of the terminal may be a chip system or a terminal, and the “terminal” may include, but is not limited to, being configured to be connected via a wired line (eg, via a public switched telephone network (PSTN). ), digital subscriber line (DSL), digital cable, direct cable connection, and/or another data
  • a terminal configured to communicate through a wireless interface may be referred to as a "wireless communication terminal", a “wireless terminal”, and/or a “mobile terminal.”
  • mobile terminals include, but are not limited to, satellite or cellular telephones; personal communication system (PCS) terminals that can combine cellular radio telephones with data processing, fax, and data communication capabilities; may include radio telephones, pagers, the Internet/ Intranet access, web browser, memo pad, calendar, and/or personal digital assistant (PDA) for global positioning system (GPS) receivers; and conventional laptop and/or palm Receiver or other electronic device including a radiotelephone transceiver.
  • the device or terminal to be charged used in the embodiments of the present invention may further include a power bank capable of receiving charging of the wireless charging device to store energy to provide energy for other electronic devices.
  • the device to be charged 30 may include a receiving coil 32, a wireless receiving circuit 34, and a control circuit 36.
  • Receive coil 32 can be used to receive a wireless charging signal transmitted by a wireless charging device.
  • the receiving coil 32 has a plurality of pairs of joints, and different joints have different numbers of turns for the defined coils.
  • a wire is formed at a certain position of the receiving coil 32 to form a joint.
  • the specific location of the connector in the receiving coil 32 can be flexibly set according to actual needs, such as one or more of the following positions of the receiving coil 32: the starting position, the ending position, and any position in the middle.
  • Each pair of connectors in the receiving coil 32 can define a coil having a certain number of turns.
  • a coil defined by a pair of joints refers to a coil having one of the pair of joints as a starting position and the other joint being a terminating position.
  • the number of the connector pairs included in the receiving coil 32 is not specifically limited in the embodiment of the present application, and may include, for example, two pairs of connectors, or may include three pairs or even more pairs of interfaces.
  • the receiving coil 32 can adopt the design shown in FIG. As shown in FIG. 2, the receiving coil 32 includes three joints, that is, the joint 1, the joint 2, and the joint 3 shown in FIG.
  • the joint 2 is located at the starting position (or the innermost side) of the receiving coil 32
  • the joint 1 is located at the end position (or the outermost side) of the receiving coil 32
  • the joint 3 is located at the intermediate position of the receiving coil 32.
  • the receiving coil 32 includes two pairs of joints, that is, a pair of joints formed by the joint 1 and the joint 2 (hereinafter referred to as a second pair of joints) and a pair of joints formed by the joint 2 and the joint 3 (hereinafter referred to as a first pair of joints) ).
  • N is a positive integer greater than 1
  • the joint 1 and the joint 2 are respectively located at the innermost and outermost sides of the receiving coil 32
  • the joint 1 and the joint 2 define an N-turn coil (ie, The entire coil of the receiving coil 32)
  • the joint 3 is located at an intermediate position of the receiving coil 32, the number of turns of the coil defined by the joint 2 and the joint 3 is less than N.
  • the wireless receiving circuit 34 can be used to convert the wireless charging signal received by the receiving coil 32 into an output voltage and an output current of the wireless receiving circuit 34.
  • the wireless receiving circuit 34 may include a shaping circuit such as a rectifier circuit and/or a filter circuit.
  • Control circuit 36 can be used to select a pair of connectors that are electrically coupled to wireless receiving circuit 34 from among a plurality of pairs of connectors.
  • the wireless receiving circuit 34 is electrically coupled to which of the plurality of pairs of connectors, and the wireless receiving circuit 34 receives the wireless charging signal from the coil defined by the pair of connectors electrically connected thereto. Still taking FIG.
  • the wireless receiving circuit 34 if the wireless receiving circuit 34 is electrically connected to the second pair of connectors (including the connector 1 and the connector 2), the wireless receiving circuit 34 receives the wireless charging signal through the entire receiving coil 32 (including the N-turn coil); The wireless receiving circuit 34 is electrically coupled to the first pair of connectors (including the connector 2 and the connector 3), and the wireless receiving circuit 34 receives the wireless charging signal through a coil (less than N ⁇ ) located between the connector 2 and the connector 3.
  • control circuit 36 may include an MCU and a switching circuit that switches between different pairs of contacts under the control of the MCU.
  • the control circuit 36 can be electrically connected to the wireless receiving circuit 34 from a plurality of pairs of connectors in any manner, which is not limited in this embodiment of the present application.
  • the control circuit 36 can first operate with a pair of joints that define a larger number of turns of the coil. If the heat generated by the device to be charged 30 is too large, the control circuit 36 can operate with a pair of joints that define fewer turns of the coil. Reduce the heat generated during the work process.
  • the receiving coil 32 provided by the embodiment of the present application has a plurality of pairs of connectors, and the control circuit 36 can select and switch between pairs of connectors according to actual needs, thereby improving the flexibility of the wireless charging process.
  • the device to be charged 30 may further include: a first charging channel 31 and a detecting circuit 33.
  • a buck circuit 312 can be disposed on the first charging channel 31 (the buck circuit 312 can be a Buck circuit or a charge pump, and the buck circuit can be omitted from the first charging channel 31), and the buck circuit 312 can be used to receive the wireless receiving circuit.
  • the output voltage of 34 is stepped down by the output voltage of the wireless receiving circuit 34 to obtain the output voltage and output current of the first charging channel 31, and based on the output voltage of the first charging channel 31 and the output current, the battery of the device 30 to be charged 35 to charge.
  • the detection circuit 33 can be used to detect the voltage and/or current on the first charging channel 31.
  • the control circuit 36 can be configured to wirelessly communicate with the wireless charging device according to the voltage and/or current on the first charging channel 31 detected by the detecting circuit 33 to adjust the transmitting power of the wireless charging device such that the output of the first charging channel 31
  • the voltage and/or output current matches the current desired charging voltage and/or charging current of battery 35.
  • the device to be charged 30 may further include a second charging channel 37.
  • a conversion circuit 372 can be disposed on the second charging channel 37.
  • the conversion circuit 372 can be configured to receive the output voltage and output current of the wireless receiving circuit 34, and perform constant voltage and/or constant current on the output voltage and/or output current of the wireless receiving circuit 34. Controlling such that the output voltage and/or output current of the second charging channel 37 matches the current required charging voltage and/or charging current of the battery 35 and based on the output voltage and/or output current of the second charging channel 37 35 (can include a battery cell, can also include multiple cells in series with each other) for charging.
  • the control circuit 36 can be used to control the first pair of connectors in the plurality of pairs to electrically connect to the wireless receiving circuit 34 when the device to be charged 30 charges the battery 35 using the first charging channel 31, such that the wireless receiving circuit 34 passes the first pair
  • the coil defined by the connector receives the wireless charging signal; when the device to be charged 30 charges the battery 35 using the second charging channel 37, the second pair of connectors in the plurality of pairs are electrically connected to the wireless receiving circuit 34 such that the wireless receiving circuit 34
  • a wireless charging signal is received by a coil defined by the second pair of contacts; wherein the first pair of contacts defines a number of turns of the coil that is less than a number of turns defined by the second pair of contacts.
  • the second pair of joints corresponds to the joint 1 and the joint 2, which define all the coils of the receiving coil 32; the first pair of joints corresponds to the joint 2 and the joint 3, which define A partial coil of the receiving coil 32 is received.
  • the control circuit 36 can control the wireless receiving circuit 34 to be electrically connected to the connector 1 and the connector 2 such that the receiving coil 32 as a whole is in an operating state; when the device to be charged 30 is used
  • the control circuit 36 can control the wireless receiving circuit 34 to electrically connect the connector 2 and the connector 3 such that a portion of the coils in the receiving coil 32 are in operation.
  • the first charging channel 31 and the second charging channel 37 described above may correspond to the wireless charging mode of the wireless charging device described above.
  • the device 30 to be charged may use the first charging channel 31 to charge the battery 35; when the wireless charging device uses the second wireless charging mode for wireless charging, the charging device is to be charged.
  • Device 30 can charge battery 35 using second charging channel 37.
  • control circuit 36 switches between different connector pairs according to the currently used charging channel, which improves the flexibility of wireless charging.
  • the control circuit 36 and the wireless charging device can perform wireless communication based on a Bluetooth, a wireless fidelity (Wi-Fi), or a backscatter modulation (or a power load modulation). This is not limited.
  • the device embodiments of the present application are described in detail above with reference to FIG. 1 to FIG. 6.
  • the method embodiments of the present application are described in detail below with reference to FIG. 7 to FIG. 8.
  • the method embodiments and the device embodiments correspond to each other, and thus are not described in detail. Portions can be found in the previous device embodiments.
  • FIG. 7 is a schematic flowchart of a method for controlling a wireless charging device according to an embodiment of the present application.
  • the wireless charging device can be the wireless charging device 10 described above.
  • the wireless charging device can include: a wireless transmitting circuit and a transmitting coil.
  • the transmitting coil has multiple pairs of joints, and different joints have different numbers of turns for the defined coils.
  • the control method of FIG. 7 includes step S710.
  • step S710 a pair of connectors electrically connected to the wireless transmitting circuit are selected from the plurality of pairs of connectors.
  • the wireless charging device supports the first wireless charging mode and the second wireless charging mode, wherein the wireless charging device charges the charging device faster than the wireless charging device in the second wireless charging mode in the first wireless charging mode. Charging speed of the charging device.
  • the above step S710 may include controlling the first pair of the plurality of pairs to electrically connect to the wireless transmitting circuit when the wireless charging device charges the device to be charged using the first wireless charging mode, so that the wireless transmitting circuit passes
  • the coil defined by the first pair of connectors emits a wireless charging signal; when the wireless charging device uses the second wireless charging mode to charge the device to be charged, the second pair of connectors in the plurality of pairs are electrically connected to the wireless transmitting circuit, so that the wireless transmitting The circuit transmits a wireless charging signal through a coil defined by the second pair of contacts; wherein the first pair of contacts defines a number of turns of the coil that is less than a number of turns defined by the second pair of contacts.
  • FIG. 8 is a schematic flowchart of a method for controlling a device to be charged according to an embodiment of the present application.
  • the device to be charged may be the device to be charged 30 described above.
  • the device to be charged 30 may include a receiving coil and a wireless receiving circuit.
  • the receiving coil has a plurality of pairs of joints, and different joints have different numbers of turns for the defined coils.
  • the control method of FIG. 8 includes step S810.
  • step S810 a pair of connectors electrically connected to the wireless receiving circuit are selected from the plurality of pairs of connectors.
  • the device to be charged may also include.
  • the first charging channel is provided with a step-down circuit, and the step-down circuit is configured to receive an output voltage of the wireless receiving circuit, and perform a step-down process on the output voltage of the wireless receiving circuit to obtain an output voltage and an output current of the first charging channel, and based on The output voltage and output current of the first charging channel are charged to the battery of the charging device;
  • the control method of FIG. 8 may further include: detecting a voltage and/or current on the first charging channel; performing wireless communication with the wireless charging device according to the detected voltage and/or current on the first charging channel to adjust the wireless charging
  • the transmit power of the device is such that the output voltage and/or output current of the first charging channel matches the current desired charging voltage and/or charging current of the battery.
  • the device to be charged may further include a second charging channel.
  • the second charging channel is provided with a conversion circuit for receiving the output voltage and the output current of the wireless receiving circuit, and performing constant voltage and/or constant current control on the output voltage and/or the output current of the wireless receiving circuit, so that the second The output voltage and/or output current of the charging channel matches the current desired charging voltage and/or charging current of the battery, and the battery is charged based on the output voltage and/or output current of the second charging channel.
  • the above step S810 may include: when the device to be charged uses the first charging channel to charge the battery, the first pair of connectors in the plurality of pairs are electrically connected to the wireless receiving circuit, so that the wireless receiving circuit passes the coil defined by the first pair of connectors. Receiving a wireless charging signal; when the device to be charged uses the second charging channel to charge the battery, controlling the second pair of connectors in the plurality of pairs to electrically connect with the wireless receiving circuit, so that the wireless receiving circuit receives through the coil defined by the second pair of connectors a wireless charging signal; wherein the number of turns defined by the first pair of contacts is less than the number of turns defined by the second pair of contacts.
  • the buck circuit is a Buck circuit or a charge pump.
  • the device to be charged and the wireless charging device perform wireless communication based on Bluetooth, wireless fidelity or backscatter modulation.
  • the computer program product includes one or more computer instructions.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transmission to another website site, computer, server or data center via wired (eg coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a digital video disc (DVD)), or a semiconductor medium (such as a solid state disk (SSD)).
  • a magnetic medium for example, a floppy disk, a hard disk, a magnetic tape
  • an optical medium such as a digital video disc (DVD)
  • a semiconductor medium such as a solid state disk (SSD)
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract

一种无线充电装置、待充电设备及其控制方法。该无线充电装置（10）包括：无线发射电路（12）；发射线圈（14），具有多对接头，且不同接头对限定的线圈的匝数不同；控制电路（16），用于从多对接头中选取与该无线发射电路电连接的一对接头。该发射线圈具有多对接头，控制电路可以根据实际需要在多对接头之间选择和切换，提高了无线充电过程的灵活性。

Description

无线充电装置、待充电设备及其控制方法
本申请要求于2017年4月7日提交中国专利局、申请号为PCT/CN2017/079784、发明名称为“无线充电系统、装置、方法及待充电设备”的PCT申请，以及2017年4月13日提交中国专利局、申请号为PCT/CN2017/080334、发明名称为“待充电设备和充电方法”的PCT申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及无线充电领域，并且更为具体地，涉及一种无线充电装置、待充电设备及其控制方法。
背景技术
随着无线充电技术的普及，越来越多的电子设备都支持无线充电功能。
无线充电过程中，无线充电装置(如无线充电底座)通常使用发射线圈发射无线充电信号(电磁信号)。
传统发射线圈由多匝线圈盘绕而成，但传统发射线圈的设计方式单一，导致无线充电过程不够灵活。
发明内容
本申请提供一种无线充电装置、待充电设备及其控制方法，以提高无线充电过程的灵活性。
第一方面，提供一种无线充电装置，包括：无线发射电路；发射线圈，具有多对接头，且不同接头对限定的线圈的匝数不同；控制电路，用于从多对接头中选取与所述无线发射电路电连接的一对接头。
第二方面，提供一种待充电设备，包括：接收线圈，具有多对接头，且不同接头对限定的线圈的匝数不同；无线接收电路；控制电路，用于从多对接头中选取与所述无线接收电路电连接的一对接头。
第三方面，提供一种无线充电装置的控制方法，所述无线充电装置包括：无线发射电路；发射线圈，具有多对接头，且不同接头对限定的线圈的匝数不同；所述控制方法包括：从多对接头中选取与所述无线发射电路电连接的 一对接头。
第四方面，提供一种待充电设备的控制方法，所述待充电设备包括：接收线圈，具有多对接头，且不同接头对限定的线圈的匝数不同；无线接收电路；所述控制方法包括：从多对接头中选取与所述无线接收电路电连接的一对接头。
本申请提供的发射线圈具有多对接头，控制电路可以根据实际需要在多对接头之间选择和切换，提高了无线充电过程的灵活性。
附图说明
图1是本申请一个实施例提供的无线充电装置的示意性结构图。
图2是本申请实施例提供的发射线圈的结构示例图。
图3是本申请另一实施例提供的无线充电装置的示意性结构图。
图4是本申请又一实施例提供的无线充电装置的示意性结构图。
图5是本申请一个实施例提供的待充电设备的示意性结构图。
图6是本申请另一实施例提供的待充电设备的示意性结构图。
图7是本申请实施例提供的无线充电装置的控制方法的示意性流程图。
图8是本申请实施例提供的待充电设备的控制方法的示意性流程图。
具体实施方式
本申请实施例提及的无线充电装置10可以是无线充电底座，也可以为芯片系统。下面结合图1，详细描述本申请实施例提供的无线充电装置10。
如图1所示，无线充电装置10可以包括无线发射电路12，发射线圈14以及控制电路16。下面对无线充电装置10内部的器件的形式和功能进行详细介绍。
无线发射电路12可以通过发射线圈14发生无线充电信号。具体地，无线发射电路12可以包括高频振荡电路，无线发射电路12可以基于该高频振荡电路生成高频振荡信号，并通过发射线圈14向外发射，形成无线充电信号。
发射线圈14具有多对接头(在发射线圈14的某个位置引出导线即可形成接头)，且不同接头对限定的线圈的匝数不同。接头在发射线圈14中的具体位置可以根据实际需要灵活设置，如可以位于发射线圈14的以下位置中 的一个或多个位置：起始位置、终止位置，以及中间的任意位置。发射线圈14中的每对接头可以限定具有一定匝数的线圈。一对接头所限定的线圈是指以该一对接头中的某个接头为起始位置，另一接头为终止位置的线圈。
本申请实施例对发射线圈14包含的接头对的数量不做具体限定，例如，可以包括2对接头，也可包括3对甚至更多对接口。
图2示出了发射线圈的一种可能的设计方式。如图2所示，发射线圈14包括3个接头，即图2所示的接头1、接头2和接头3。接头2位于发射线圈14的起始位置(或最内侧)，接头1位于发射线圈14的终止位置(或最外侧)，接头3位于发射线圈14的中间位置。
在图2中，发射线圈14包括2对接头，即接头1和接头2形成的一对接头(下称第二对接头)以及接头2和接头3形成的一对接头(下称第一对接头)。以发射线圈14包含N匝线圈为例(N为大于1的正整数)，由于接头1和接头2分别位于发射线圈14的最内侧和最外侧，接头1和接头2限定了N匝线圈(即发射线圈14的全部线圈)，由于接头3位于发射线圈14的中间位置，接头2和接头3限定的线圈的匝数小于N。
控制电路16可用于从多对接头中选取与无线发射电路12电连接的一对接头。无线发射电路12与多对接头中的哪对接头电连接，则该无线发射电路12会通过与其电连接的这对接头所限定的线圈向外发射无线充电信号。仍以图2为例，如果无线发射电路12与第二对接头(包括接头1和接头2)电连接，则无线发射电路12通过整个发射线圈14(包括N匝线圈)向外发射无线充电信号；如果无线发射电路12与第一对接头(包括接头2和接头3)电连接，则无线发射电路12通过位于接头2和接头3之间的线圈(小于N匝)向外发射无线充电信号。
本申请实施例对控制电路16的形式不做具体限定，只要能够实现上述控制功能即可。作为一个示例，控制电路16可以包括微控制器单元(microcontroller unit，MCU)和开关电路，开关电路在MCU的控制下在不同接头对之间切换。
控制电路16可以按照任意方式从多对接头中选取一对接头与无线发射电路12电连接，本申请实施例对此并不限定。例如，控制电路16可以先使用限定线圈匝数较多的一对接头工作，如果无线发射装置10产生的热量过大，则控制电路16可以使用限定线圈匝数较少的一对接头工作，以降低工 作过程的发热量。
本申请实施例提供的发射线圈14具有多对接头，控制电路16可以根据实际需要在多对接头之间选择和切换，提高了无线充电过程的灵活性。
下面给出一种可选的接头选取方式。
首先，无线充电装置10支持第一无线充电模式和第二无线充电模式。无线充电装置10在第一无线充电模式下对待充电设备的充电速度快于无线充电装置在第二无线充电模式下对待充电设备的充电速度。
换句话说，相较于工作在第二无线充电模式下的无线充电装置10来说，工作在第一无线充电模式下的无线充电装置10充满相同容量的待充电设备230中的电池的耗时更短。
第二无线充电模式可为称为普通无线充电模式，例如可以是传统的基于QI标准、电源实物联盟(power matters alliance，PMA)标准或无线电源联盟(alliance for wireless power，A4WP)标准的无线充电模式。第一无线充电模式可为快速无线充电模式。该普通无线充电模式可以指无线充电装置10的发射功率较小(通常小于15W，常用的发射功率为5W或10W)的无线充电模式，在普通无线充电模式下想要完全充满一较大容量电池(如3000毫安时容量的电池)，通常需要花费数个小时的时间；而在快速无线充电模式下，无线充电装置10的发射功率相对较大(通常大于或等于15W)。相较于普通无线充电模式而言，无线充电装置220在快速无线充电模式下完全充满相同容量电池所需要的充电时间能够明显缩短、充电速度更快。
控制电路16可用于：当无线充电装置10使用第一无线充电模式为待充电设备充电时，控制多对接头中的第一对接头与无线发射电路电连接，使得无线发射电路12通过第一对接头所限定的线圈发射无线充电信号；当无线充电装置10使用第二无线充电模式为待充电设备充电时，控制多对接头中的第二对接头与无线发射电路电连接，使得无线发射电路12通过第二对接头所限定的线圈发射无线充电信号；其中第一对接头所限定的线圈匝数小于第二对接头所限定的线圈匝数。
以发射线圈14为图2所示的形式为例，第二对接头对应于接头1和接头2，其限定了发射线圈14的全部线圈；第一对接头对应于接头2和接头3，其限定了发射线圈14的部分线圈。当无线充电装置10使用第二无线充电模式为待充电设备充电时，控制电路16可以控制无线发射电路12与接头1和 接头2电连接，使得发射线圈14整体处于工作状态；当无线充电装置10使用第一无线充电模式为待充电设备充电时，控制电路16可以控制无线发射电路12与接头2和接头3电连接，使得发射线圈14中的部分线圈处于工作状态。
一对接头限定的线圈匝数越多，线圈的阻抗可能越大。当无线充电装置10工作在第一无线充电模式时，由于无线充电装置10在第一无线充电模式下的充电速度较快，如果处于工作状态的线圈阻抗较大，线圈的发热现象就会非常突出。为了降低线圈的发热量，当无线充电装置10处于第一无线充电模式的情况下，本申请实施例控制第一对接头工作，从而降低处于工作状态的线圈的阻抗和发热量(对于线圈匝数较少而带来的电感的下降，可以通过提高发射电压等方式进行弥补)；当无线充电装置10处于第二无线充电模式的情况下，本申请实施例控制第二对接头工作。
无线充电装置10除了包括上述无线发射电路12，发射线圈14以及控制电路16之外，还可以根据实际需要设置具有其他功能的电路，本申请实施例对此并不限定。下面结合图3-图4，给出无线充电装置10的几种可选的实现方式。
如图3所示，无线充电装置10还可包括电压转换电路18。
电压转换电路18可用于接收输入电压，并对输入电压进行转换，得到无线发射电路12的输入电压和输入电流。控制电路16还可用于在无线充电的过程中，与待充电设备进行无线通信，以调整无线发射电路12的发射功率，使得无线发射电路12的发射功率与待充电设备的电池当前所需的充电电压和/或充电电流相匹配。
电压转换电路18的设置使得无线充电装置10可以根据实际需要对无线发射电路12所接收到的电压进行调整。例如，假设无线充电装置10希望采用高压低电流的方式进行能量传输，这种能量传输方式对无线发射电路12的输入电压(如10V或20V)要求较高，如果外部的电源提供设备的最大输出电压无法达到无线发射电路12的输入电压需求，电压转换电路18的设置可以使得无法达到无线发射电路12的输入电压达到期望的输入电压。当然，可替换地，如果外部电源提供设备的输出电压可以达到无线发射电路12对输入电压需求，也可以省去电压转换电路18，以简化无线充电装置10的实现。
如图4所示，无线充电装置10还可包括充电接口13。充电接口13可用于与外部的电源提供设备20相连，上文描述的电压转换电路18的输入电压可以为电源提供设备20通过充电接口13提供的电压。在该实施例中，控制电路16还可用于与电源提供设备20进行通信，以调整电源提供设备20的输出电压和/或输出电流，从而调整无线发射电路12的发射功率。
可选地，充电接口13可以为通用串行总线(universal serial bus，USB)接口。本申请对充电接口13的类型不做具体限定。可选地，在一些实施例中，该充电接口13可以为通用串行总线(universal serial bus，USB)接口。该USB接口例如可以是USB 2.0接口，micro USB接口，或USB TYPE-C接口。可选地，在另一些实施例中，充电接口13还可以lightning接口，或者其他任意类型的能够用于充电的并口和/或串口。
本申请实施例对控制电路16与电源提供设备20之间的通信方式不做具体限定。作为一个示例，控制电路16可以通过除充电接口之外的其他通信接口与电源提供设备20相连，并通过该通信接口与电源提供设备20通信。作为另一个示例，控制电路16可以以无线的方式与电源提供设备20进行通信。例如，控制电路16可以与电源提供设备20进行近场通信(near field communication，NFC)。作为又一个示例，控制电路16可以通过充电接口13与电源提供设备20进行通信，而无需设置额外的通信接口或其他无线通信模块，这样可以简化无线充电装置10的实现。例如，充电接口13为USB接口，控制电路16可以与电源提供设备20基于该USB接口中的数据线(如D+和/或D-线)进行通信。又如，充电接口13可以为支持功率传输(power delivery，PD)通信协议的USB接口(如USB TYPE-C接口)，控制电路16与电源提供设备210可以基于PD通信协议进行通信。
图3实施例示出的无线充电装置10通过外部的电源提供设备20接收充电功率。与图3实施例不同，图4实施例将电源提供设备20的功能集成在无线充电装置10内部，以减少无线充电所需的设备数量，提高无线充电装置10的集成度。
上文详细描述了根据本申请实施例的无线充电装置，下面结合具体的实施例，详细描述本申请实施例提供的待充电设备。
本申请实施例提供的待充电设备可以是芯片系统，也可以是终端，该“终端”可包括，但不限于被设置成经由有线线路连接(如经由公共交换电话网 络(public switched telephone network，PSTN)、数字用户线路(digital subscriber line，DSL)、数字电缆、直接电缆连接，以及/或另一数据连接/网络)和/或经由(例如，针对蜂窝网络、无线局域网(wireless local area network，WLAN)、诸如手持数字视频广播(digital video broadcasting handheld，DVB-H)网络的数字电视网络、卫星网络、调幅-调频(amplitude modulation-frequency modulation，AM-FM)广播发送器，以及/或另一通信终端的)无线接口接收/发送通信信号的装置。被设置成通过无线接口通信的终端可以被称为“无线通信终端”、“无线终端”以及/或“移动终端”。移动终端的示例包括，但不限于卫星或蜂窝电话；可以组合蜂窝无线电电话与数据处理、传真以及数据通信能力的个人通信系统(personal communication system，PCS)终端；可以包括无线电电话、寻呼机、因特网/内联网接入、Web浏览器、记事簿、日历以及/或全球定位系统(global positioning system,GPS)接收器的个人数字助理(personal digital assistant，PDA)；以及常规膝上型和/或掌上型接收器或包括无线电电话收发器的其它电子装置。另外，本发明实施例中所使用到的待充电设备或终端还可包括移动电源(power bank)，该移动电源能够接收无线充电装置的充电，从而将能量存储起来，以为其他电子装置提供能量。
如图5所示，本申请实施例提供的待充电设备30可以包括接收线圈32、无线接收电路34以及控制电路36。
接收线圈32可用于接收无线充电装置发射的无线充电信号。接收线圈32具有多对接头，且不同接头对限定的线圈的匝数不同。在接收线圈32的某个位置引出导线即可形成接头。接头在接收线圈32中的具体位置可以根据实际需要灵活设置，如可以位于接收线圈32的以下位置中的一个或多个位置：起始位置、终止位置，以及中间的任意位置。接收线圈32中的每对接头可以限定具有一定匝数的线圈。一对接头所限定的线圈是指以该一对接头中的某个接头为起始位置，另一接头为终止位置的线圈。
本申请实施例对接收线圈32包含的接头对的数量不做具体限定，例如，可以包括2对接头，也可包括3对甚至更多对接口。
接收线圈32可以采用图2所示的设计方式。如图2所示，接收线圈32包括3个接头，即图2所示的接头1、接头2和接头3。接头2位于接收线圈32的起始位置(或最内侧)，接头1位于接收线圈32的终止位置(或最 外侧)，接头3位于接收线圈32的中间位置。
在图2中，接收线圈32包括2对接头，即接头1和接头2形成的一对接头(下称第二对接头)以及接头2和接头3形成的一对接头(下称第一对接头)。以接收线圈32包含N匝线圈为例(N为大于1的正整数)，由于接头1和接头2分别位于接收线圈32的最内侧和最外侧，接头1和接头2限定了N匝线圈(即接收线圈32的全部线圈)，由于接头3位于接收线圈32的中间位置，接头2和接头3限定的线圈的匝数小于N。
无线接收电路34可用于将接收线圈32接收到的无线充电信号转换成无线接收电路34的输出电压和输出电流。具体地，无线接收电路34可包括整流电路和/或滤波电路等整形电路。
控制电路36可用于从多对接头中选取与无线接收电路34电连接的一对接头。无线接收电路34与多对接头中的哪对接头电连接，则该无线接收电路34会从与其电连接的这对接头所限定的线圈接收无线充电信号。仍以图2为例，如果无线接收电路34与第二对接头(包括接头1和接头2)电连接，则无线接收电路34通过整个接收线圈32(包括N匝线圈)接收无线充电信号；如果无线接收电路34与第一对接头(包括接头2和接头3)电连接，则无线接收电路34通过位于接头2和接头3之间的线圈(小于N匝)接收无线充电信号。
本申请实施例对控制电路36的形式不做具体限定，只要能够实现上述控制功能即可。作为一个示例，控制电路36可以包括MCU和开关电路，开关电路在MCU的控制下在不同接头对之间切换。
控制电路36可以按照任意方式从多对接头中选取一对接头与无线接收电路34电连接，本申请实施例对此并不限定。例如，控制电路36可以先使用限定线圈匝数较多的一对接头工作，如果待充电设备30产生的热量过大，则控制电路36可以使用限定线圈匝数较少的一对接头工作，以降低工作过程的发热量。
本申请实施例提供的接收线圈32具有多对接头，控制电路36可以根据实际需要在多对接头之间选择和切换，提高了无线充电过程的灵活性。
下面给出一种可选的接头选取方式。
首先，如图6所示，待充电设备30还可包括：第一充电通道31和检测电路33。第一充电通道31上可以设置降压电路312(降压电路312可以是 Buck电路或电荷泵，第一充电通道31上也可以不设置降压电路)，降压电路312可用于接收无线接收电路34的输出电压，对无线接收电路34的输出电压进行降压处理，得到第一充电通道31的输出电压和输出电流，并基于第一充电通道31的输出电压和输出电流对待充电设备30的电池35进行充电。
检测电路33可用于检测第一充电通道31上的电压和/或电流。
控制电路36可用于根据检测电路33检测到的第一充电通道31上的电压和/或电流，与无线充电装置进行无线通信，以调整无线充电装置的发射功率，使得第一充电通道31的输出电压和/或输出电流与电池35当前所需的充电电压和/或充电电流相匹配。
可选地，如图6所示，待充电设备30还可包括第二充电通道37。第二充电通道37上可以设置变换电路372，变换电路372可用于接收无线接收电路34的输出电压和输出电流，对无线接收电路34的输出电压和/或输出电流进行恒压和/或恒流控制，使得第二充电通道37的输出电压和/或输出电流与电池35当前所需的充电电压和/或充电电流相匹配，并基于第二充电通道37的输出电压和/或输出电流对电池35(可以包括一节电芯，也可以包括相互串联的多节电芯)进行充电。
控制电路36可用于：当待充电设备30使用第一充电通道31为电池35充电时，控制多对接头中的第一对接头与无线接收电路34电连接，使得无线接收电路34通过第一对接头所限定的线圈接收无线充电信号；当待充电设备30使用第二充电通道37为电池35充电时，控制多对接头中的第二对接头与无线接收电路34电连接，使得无线接收电路34通过第二对接头所限定的线圈接收无线充电信号；其中第一对接头所限定的线圈匝数小于第二对接头所限定的线圈匝数。
以接收线圈32为图2所示的形式为例，第二对接头对应于接头1和接头2，其限定了接收线圈32的全部线圈；第一对接头对应于接头2和接头3，其限定了接收线圈32的部分线圈。当待充电设备30使用第二充电通道37为电池35充电时，控制电路36可以控制无线接收电路34与接头1和接头2电连接，使得接收线圈32整体处于工作状态；当待充电设备30使用第一充电通道37为电池35充电时，控制电路36可以控制无线接收电路34与接头2和接头3电连接，使得接收线圈32中的部分线圈处于工作状态。
上述第一充电通道31和第二充电通道37可以与上文描述的无线充电装置的无线充电模式相对应。例如，当无线充电装置采用第一无线充电模式进行无线充电时，待充电设备30可以采用第一充电通道31为电池35充电；当无线充电装置采用第二无线充电模式进行无线充电时，待充电设备30可以采用第二充电通道37为电池35充电。
本申请实施例中，控制电路36根据当前使用的充电通道在不同接头对之间切换，提高了无线充电的灵活性。
控制电路36和无线充电装置可以基于蓝牙(bluetooth)、无线保真(wireless fidelity，Wi-Fi)或反向散射(backscatter)调制方式(或功率负载调制方式)进行无线通信，本申请实施例对此并不限定。
上文结合图1-图6，详细描述了本申请的装置实施例，下面结合图7-图8，详细描述本申请的方法实施例，方法实施例与装置实施例相互对应，因此未详细描述的部分可以参见前面各装置实施例。
图7是本申请实施例提供的无线充电装置的控制方法的示意性流程图。无线充电装置可以是上文描述的无线充电装置10。该无线充电装置可以包括：无线发射电路和发射线圈。发射线圈具有多对接头，且不同接头对限定的线圈的匝数不同。
图7的控制方法包括步骤S710。在步骤S710中，从多对接头中选取与无线发射电路电连接的一对接头。
可选地，无线充电装置支持第一无线充电模式和第二无线充电模式，其中无线充电装置在第一无线充电模式下对待充电设备的充电速度快于无线充电装置在第二无线充电模式下对待充电设备的充电速度。
在该实施例中，上述步骤S710可包括当无线充电装置使用第一无线充电模式为待充电设备充电时，控制多对接头中的第一对接头与无线发射电路电连接，使得无线发射电路通过第一对接头所限定的线圈发射无线充电信号；当无线充电装置使用第二无线充电模式为待充电设备充电时，控制多对接头中的第二对接头与无线发射电路电连接，使得无线发射电路通过第二对接头所限定的线圈发射无线充电信号；其中第一对接头所限定的线圈匝数小于第二对接头所限定的线圈匝数。
图8是本申请实施例提供的待充电设备的控制方法的示意性流程图。待充电设备可以是上文描述的待充电设备30。待充电设备30可以包括接收线 圈和无线接收电路。接收线圈具有多对接头，且不同接头对限定的线圈的匝数不同。
图8的控制方法包括步骤S810。在步骤S810中，从多对接头中选取与无线接收电路电连接的一对接头。
可选地，待充电设备还可包括。第一充电通道。第一充电通道上设置有降压电路，降压电路用于接收无线接收电路的输出电压，对无线接收电路的输出电压进行降压处理，得到第一充电通道的输出电压和输出电流，并基于第一充电通道的输出电压和输出电流对待充电设备的电池进行充电；
图8的控制方法还可包括：检测第一充电通道上的电压和/或电流；根据检测到的第一充电通道上的电压和/或电流，与无线充电装置进行无线通信，以调整无线充电装置的发射功率，使得第一充电通道的输出电压和/或输出电流与电池当前所需的充电电压和/或充电电流相匹配。
可选地，待充电设备还可包括第二充电通道。第二充电通道上设置有变换电路，变换电路用于接收无线接收电路的输出电压和输出电流，对无线接收电路的输出电压和/或输出电流进行恒压和/或恒流控制，使得第二充电通道的输出电压和/或输出电流与电池当前所需的充电电压和/或充电电流相匹配，并基于第二充电通道的输出电压和/或输出电流对电池进行充电。
上述步骤S810可包括：当待充电设备使用第一充电通道为电池充电时，控制多对接头中的第一对接头与无线接收电路电连接，使得无线接收电路通过第一对接头所限定的线圈接收无线充电信号；当待充电设备使用第二充电通道为电池充电时，控制多对接头中的第二对接头与无线接收电路电连接，使得无线接收电路通过第二对接头所限定的线圈接收无线充电信号；其中第一对接头所限定的线圈匝数小于第二对接头所限定的线圈匝数。
可选地，降压电路为Buck电路或电荷泵。
可选地，待充电设备和无线充电装置基于蓝牙、无线保真或反向散射调制方式进行无线通信。
需要说明的是，在不冲突的前提下，本申请描述的各个实施例和/或各个实施例中的技术特征可以任意的相互组合，组合之后得到的技术方案也应落入本申请的保护范围。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其他任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的 形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本发明实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如数字视频光盘(digital video disc，DVD))、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一 个单元中。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (22)

  1. 一种无线充电装置，其特征在于，包括：
    无线发射电路；
    发射线圈，具有多对接头，且不同接头对限定的线圈的匝数不同；
    控制电路，用于从多对接头中选取与所述无线发射电路电连接的一对接头。
  2. 根据权利要求1所述的无线充电装置，其特征在于，所述无线充电装置支持第一无线充电模式和第二无线充电模式，其中所述无线充电装置在所述第一无线充电模式下对待充电设备的充电速度快于所述无线充电装置在所述第二无线充电模式下对所述待充电设备的充电速度，
    所述控制电路用于：
    当所述无线充电装置使用所述第一无线充电模式为所述待充电设备充电时，控制多对接头中的第一对接头与所述无线发射电路电连接，使得所述无线发射电路通过所述第一对接头所限定的线圈发射无线充电信号；
    当所述无线充电装置使用所述第二无线充电模式为所述待充电设备充电时，控制多对接头中的第二对接头与所述无线发射电路电连接，使得所述无线发射电路通过所述第二对接头所限定的线圈发射无线充电信号；
    其中所述第一对接头所限定的线圈匝数小于所述第二对接头所限定的线圈匝数。
  3. 根据权利要求1或2所述的无线充电装置，其特征在于，所述无线充电装置还包括：
    电压转换电路，用于接收输入电压，并对所述输入电压进行转换，得到所述无线发射电路的输入电压和输入电流；
    所述控制电路还用于在所述无线充电的过程中，与所述待充电设备进行无线通信，以调整所述无线发射电路的发射功率，使得所述无线发射电路的发射功率与所述待充电设备的电池当前所需的充电电压和/或充电电流相匹配。
  4. 根据权利要求3所述的无线充电装置，其特征在于，所述无线充电装置还包括：
    充电接口，用于与电源提供设备相连，所述电压转换电路的输入电压为所述电源提供设备通过所述充电接口提供的电压；
    其中所述控制电路还用于与所述电源提供设备进行通信，以调整所述电源提供设备的输出电压和/或输出电流，从而调整所述无线发射电路的发射功率。
  5. 根据权利要求4所述的无线充电装置，其特征在于，所述充电接口为通用串行总线USB接口或lightning接口。
  6. 根据权利要求5所述的无线充电装置，其特征在于，所述充电接口为USB接口，所述控制电路与所述电源提供设备基于所述USB接口中的数据线进行通信。
  7. 根据权利要求5所述的无线充电装置，其特征在于，所述充电接口为支持功率传输PD通信协议的USB接口，所述控制电路与所述电源提供设备基于所述PD通信协议进行通信。
  8. 根据权利要求3所述的无线充电装置，其特征在于，所述无线充电装置还包括：
    电源提供电路，用于接收外部输入的交流电，根据所述交流电生成所述电源提供电路的输出电压和输出电流，所述电压转换电路的输入电压为所述电源提供电路的输出电压。
  9. 根据权利要求1-8中任一项所述的无线充电装置，其特征在于，所述无线充电装置为无线充电底座。
  10. 一种待充电设备，其特征在于，包括：
    接收线圈，具有多对接头，且不同接头对限定的线圈的匝数不同；
    无线接收电路；
    控制电路，用于从多对接头中选取与所述无线接收电路电连接的一对接头。
  11. 根据权利要求10所述的待充电设备，其特征在于，所述待充电设备还包括：
    第一充电通道，所述第一充电通道上设置有降压电路，所述降压电路用于接收所述无线接收电路的输出电压，对所述无线接收电路的输出电压进行降压处理，得到所述第一充电通道的输出电压和输出电流，并基于所述第一充电通道的输出电压和输出电流对所述待充电设备的电池进行充电；
    检测电路，用于检测所述第一充电通道上的电压和/或电流；
    所述控制电路用于：
    根据所述检测电路检测到的所述第一充电通道上的电压和/或电流，与无线充电装置进行无线通信，以调整所述无线充电装置的发射功率，使得所述第一充电通道的输出电压和/或输出电流与所述电池当前所需的充电电压和/或充电电流相匹配。
  12. 根据权利要求11所述的待充电设备，其特征在于，所述待充电设备还包括：
    第二充电通道，所述第二充电通道上设置有变换电路，所述变换电路用于接收所述无线接收电路的输出电压和输出电流，对所述无线接收电路的输出电压和/或输出电流进行恒压和/或恒流控制，使得所述第二充电通道的输出电压和/或输出电流与所述电池当前所需的充电电压和/或充电电流相匹配，并基于所述第二充电通道的输出电压和/或输出电流对所述电池进行充电；
    所述控制电路用于：
    当所述待充电设备使用所述第一充电通道为所述电池充电时，控制多对接头中的第一对接头与所述无线接收电路电连接，使得所述无线接收电路通过所述第一对接头所限定的线圈接收无线充电信号；
    当所述待充电设备使用所述第二充电通道为所述电池充电时，控制多对接头中的第二对接头与所述无线接收电路电连接，使得所述无线接收电路通过所述第二对接头所限定的线圈接收无线充电信号；
    其中所述第一对接头所限定的线圈匝数小于所述第二对接头所限定的线圈匝数。
  13. 根据权利要求12所述的待充电设备，其特征在于，所述电池包括相互串联的N节电芯，其中N为大于1的正整数。
  14. 根据权利要求11-13中任一项所述的待充电设备，其特征在于，所述降压电路为Buck电路或电荷泵。
  15. 根据权利要求11-14中任一项所述的待充电设备，其特征在于，所述控制电路和所述无线充电装置基于蓝牙、无线保真或反向散射调制方式进行无线通信。
  16. 一种无线充电装置的控制方法，其特征在于，所述无线充电装置包括：
    无线发射电路；
    发射线圈，具有多对接头，且不同接头对限定的线圈的匝数不同；
    所述控制方法包括：
    从多对接头中选取与所述无线发射电路电连接的一对接头。
  17. 根据权利要求16所述的控制方法，其特征在于，所述无线充电装置支持第一无线充电模式和第二无线充电模式，其中所述无线充电装置在所述第一无线充电模式下对待充电设备的充电速度快于所述无线充电装置在所述第二无线充电模式下对所述待充电设备的充电速度，
    所述从多对接头中选取与所述无线发射电路电连接的一对接头，包括：
    当所述无线充电装置使用所述第一无线充电模式为所述待充电设备充电时，控制多对接头中的第一对接头与所述无线发射电路电连接，使得所述无线发射电路通过所述第一对接头所限定的线圈发射无线充电信号；
    当所述无线充电装置使用所述第二无线充电模式为所述待充电设备充电时，控制多对接头中的第二对接头与所述无线发射电路电连接，使得所述无线发射电路通过所述第二对接头所限定的线圈发射无线充电信号；
    其中所述第一对接头所限定的线圈匝数小于所述第二对接头所限定的线圈匝数。
  18. 一种待充电设备的控制方法，其特征在于，所述待充电设备包括：
    接收线圈，具有多对接头，且不同接头对限定的线圈的匝数不同；
    无线接收电路；
    所述控制方法包括：
    从多对接头中选取与所述无线接收电路电连接的一对接头。
  19. 根据权利要求18所述的控制方法，其特征在于，所述待充电设备还包括：
    第一充电通道，所述第一充电通道上设置有降压电路，所述降压电路用于接收所述无线接收电路的输出电压，对所述无线接收电路的输出电压进行降压处理，得到所述第一充电通道的输出电压和输出电流，并基于所述第一充电通道的输出电压和输出电流对所述待充电设备的电池进行充电；
    所述控制方法还包括：
    检测所述第一充电通道上的电压和/或电流；
    根据检测到的所述第一充电通道上的电压和/或电流，与无线充电装置进行无线通信，以调整所述无线充电装置的发射功率，使得所述第一充电通道 的输出电压和/或输出电流与所述电池当前所需的充电电压和/或充电电流相匹配。
  20. 根据权利要求19所述的控制方法，其特征在于，所述待充电设备还包括：
    第二充电通道，所述第二充电通道上设置有变换电路，所述变换电路用于接收所述无线接收电路的输出电压和输出电流，对所述无线接收电路的输出电压和/或输出电流进行恒压和/或恒流控制，使得所述第二充电通道的输出电压和/或输出电流与所述电池当前所需的充电电压和/或充电电流相匹配，并基于所述第二充电通道的输出电压和/或输出电流对所述电池进行充电；
    所述从多对接头中选取与所述无线接收电路电连接的一对接头，包括：
    当所述待充电设备使用所述第一充电通道为所述电池充电时，控制多对接头中的第一对接头与所述无线接收电路电连接，使得所述无线接收电路通过所述第一对接头所限定的线圈接收无线充电信号；
    当所述待充电设备使用所述第二充电通道为所述电池充电时，控制多对接头中的第二对接头与所述无线接收电路电连接，使得所述无线接收电路通过所述第二对接头所限定的线圈接收无线充电信号；
    其中所述第一对接头所限定的线圈匝数小于所述第二对接头所限定的线圈匝数。
  21. 根据权利要求19或20所述的控制方法，其特征在于，所述降压电路为Buck电路或电荷泵。
  22. 根据权利要求19-21中任一项所述的控制方法，其特征在于，所述待充电设备和所述无线充电装置基于蓝牙、无线保真或反向散射调制方式进行无线通信。
PCT/CN2018/081962 2017-04-07 2018-04-04 无线充电装置、待充电设备及其控制方法 WO2018184573A1 (zh)

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JP2019553923A JP6952127B2 (ja) 2017-04-07 2018-04-04 無線充電装置、被充電機器及びその制御方法
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