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WO2023005393A1 - 一种无线充电系统 - Google Patents

一种无线充电系统 Download PDF

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Publication number
WO2023005393A1
WO2023005393A1 PCT/CN2022/095331 CN2022095331W WO2023005393A1 WO 2023005393 A1 WO2023005393 A1 WO 2023005393A1 CN 2022095331 W CN2022095331 W CN 2022095331W WO 2023005393 A1 WO2023005393 A1 WO 2023005393A1
Authority
WO
WIPO (PCT)
Prior art keywords
wireless
control module
coil
charging
wireless output
Prior art date
Application number
PCT/CN2022/095331
Other languages
English (en)
French (fr)
Inventor
武渊
张伟
王朝
赵礼列
张友军
Original Assignee
荣耀终端有限公司
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
Application filed by 荣耀终端有限公司 filed Critical 荣耀终端有限公司
Priority to US18/248,024 priority Critical patent/US20240162752A1/en
Priority to EP22848003.4A priority patent/EP4207556B1/en
Publication of WO2023005393A1 publication Critical patent/WO2023005393A1/zh

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03545—Pens or stylus
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1626—Constructional details or arrangements for portable computers with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1632—External expansion units, e.g. docking stations
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
    • G06F3/0202—Constructional details or processes of manufacture of the input device
    • G06F3/0219—Special purpose keyboards
    • 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
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • 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
    • 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
    • H02J7/0045—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the 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
    • H02J7/34—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
    • H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
    • 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
    • H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
    • H02J50/402—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
    • 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 examples of the present application relate to the technical field of terminals, and in particular to a wireless charging system.
  • wireless keyboards have the advantage of fast input speed. It is convenient, can realize handwritten text and can carry out identity verification and other advantages.
  • the electronic stylus is mainly charged in two ways: wired charging and wireless charging.
  • the existing wired charging is usually provided with a wired charging interface on the electronic stylus, and then connected to a power supply device such as an adapter through a cable.
  • the charging method is difficult to achieve the integrity and aesthetics of the electronic stylus.
  • Existing wireless charging is usually provided with a wireless charging coil on both the tablet computer and the electronic stylus, and then the electronic stylus is adsorbed on the tablet computer, and the wireless charging coil on the electronic stylus is coupled with the wireless charging coil on the tablet computer , to achieve wireless charging for the electronic stylus.
  • the electronic stylus is easy to fall off from the tablet computer due to the problem that the tablet computer has a weak adsorption capacity.
  • wireless keyboards and electronic stylus are stored as accessories, wireless keyboards and tablets can generally be stored as a whole, while electronic stylus needs to be stored additionally, resulting in tablet computers, wireless keyboards and electronic stylus as a package.
  • the system has poor portability, and the charging link of the existing charging system is generally provided with multiple chips, resulting in high cost.
  • the application provides a wireless charging system, which has the function of wirelessly charging the electronic stylus while storing the electronic stylus, realizes the integration of storage and wireless charging, has good convenience, and realizes
  • a wireless charging system which has the function of wirelessly charging the electronic stylus while storing the electronic stylus, realizes the integration of storage and wireless charging, has good convenience, and realizes
  • the use of chips in the link is reduced, the efficiency and reliability of charging are improved, and the cost is reduced.
  • the present application provides a wireless charging system, the system includes a tablet computer, a wireless keyboard and an electronic stylus, the wireless keyboard includes a keyboard body, a bracket for placing the tablet computer, and a bracket for movably connecting the keyboard body and the bracket connecting part.
  • the tablet computer is provided with a first battery, a first wireless output control module and a first wireless output coil, the first wireless output control module is connected to the first battery, and the first wireless output coil is connected to the first wireless output control module.
  • the keyboard body is provided with a first wireless receiving coil, a first wireless receiving control module, a first charging control module and a second battery, the first wireless receiving coil receives the electromagnetic signal sent by the first wireless output coil, and the first wireless receiving control module
  • the module is connected with the first wireless receiving coil
  • the first charging control module is connected with the first wireless receiving control module
  • the second battery is connected with the first charging control module.
  • the connecting portion includes a storage cavity with an opening at one end, and the storage cavity is used to store the electronic stylus through the opening.
  • a second wireless output coil is arranged in the storage cavity, and the second wireless output coil is connected to the first wireless receiving coil, and the second wireless output coil is used for wirelessly charging the electronic stylus stored in the storage cavity.
  • the wireless charging of the wireless keyboard by the tablet computer and the wireless charging of the electronic stylus by the wireless keyboard are realized.
  • the first wireless output control module and the first wireless output coil, the first wireless receiving coil and the first wireless receiving control module constitute the first-level wireless charging device, which realizes the wireless charging of the wireless keyboard by the tablet computer;
  • the first wireless receiving coil and the second wireless output coil, as well as the wireless receiving coil and the wireless receiving control module on the electronic stylus constitute a second-level wireless charging device, which realizes the wireless charging of the electronic stylus by the wireless keyboard.
  • the first charging control module can be used to control the current and voltage for charging the second battery, etc., to achieve the stability of the current and voltage;
  • the second battery can be used as a power supply Powers the wireless keyboard.
  • the wireless keyboard wirelessly charges the electronic stylus
  • the AC signal received by the first wireless receiving coil is directly transmitted to the second wireless output coil to realize the direct transmission of AC power without the conversion of AC to DC or DC to AC
  • the process saves the chips required for AC to DC and DC to AC, and saves costs; at the same time, the link length of wireless charging is reduced, and the reliability and efficiency of wireless charging are improved.
  • While realizing two-level wireless charging by setting a storage cavity on the wireless keyboard, the storage of the wireless keyboard to the electronic stylus is realized, and the portability of the entire charging system is improved.
  • the second wireless output control module and the second wireless output coil By arranging the second wireless output control module and the second wireless output coil in the storage cavity, wireless charging for the electronic stylus is realized while the electronic stylus is stored.
  • the second wireless output coil and the first wireless receiving coil are connected through a matching circuit
  • the matching circuit includes a first capacitor and a second capacitor
  • the first capacitor and the first wireless receiving coil A resonant circuit is formed
  • the second capacitor and the second wireless output coil form a resonant circuit
  • the AC signal received by the first wireless receiving coil is directly transmitted to the second wireless output coil, and by setting the first capacitor and the second wireless output coil
  • the second capacitor respectively forms a resonant circuit with the first wireless receiving coil and the second wireless output coil, which is beneficial to increase the transmission power.
  • a third wireless output coil is also provided in the tablet computer, the third wireless output coil is connected to the first wireless output control module, and the third wireless output coil is used for Wireless charging of electronic stylus on computer.
  • the third wireless output coil is used to wirelessly charge the electronic stylus, so that the tablet computer can directly wirelessly charge the electronic stylus.
  • the tablet computer is further provided with a second wireless output control module and a third wireless output coil, the second wireless output control module is connected to the first battery, and the third wireless output coil is connected to the The second wireless output control module is connected, and the third wireless output coil is used for wirelessly charging the electronic stylus attached to the tablet computer.
  • the second wireless output control module can be used to detect, control, and transmit wireless The charging energy prevents the operation of the third wireless output coil from being affected by the first wireless output control module, so that the tablet computer can wirelessly charge the electronic stylus and the wireless keyboard at the same time.
  • the tablet computer is provided with a voltage stabilizing control module, the voltage stabilizing control module is connected to the first battery, and both the first wireless output control module and the second wireless output control module are connected to the voltage stabilizing control module. connected to the control module.
  • the voltage stabilization control module can manage and control the output voltage of the first battery, so that the first battery can provide a stable voltage under different power levels.
  • a first control switch is provided between the first wireless output coil and the first wireless output control module, and a control switch is provided between the third wireless output coil and the first wireless output control module.
  • Second control switch is provided between the first wireless output coil and the first wireless output control module.
  • the control of the working state of the wireless output coil and the third wireless output coil can be realized, so that the first wireless output coil and the third wireless output coil are both connected to the first wireless output coil.
  • the wireless output control module When the wireless output control module is connected, the wireless output coil on one side is controlled to work, so as to avoid the situation that the first wireless output coil and the third wireless output coil are both connected to the first wireless control module and are in working state at the same time.
  • a second wireless receiving coil, a second wireless receiving control module, a second charging control module and a third battery are arranged in the electronic stylus;
  • the second wireless receiving coil receives the electromagnetic signal sent by the second wireless output coil
  • the second wireless receiving control module is connected with the second wireless receiving coil
  • the second charging control module is connected with the second wireless receiving control module
  • the third battery is connected with the second wireless receiving control module.
  • This design mode shows a specific arrangement form of the electronic stylus.
  • the connecting part includes a rotating shaft, and the rotating shaft is used for movably connecting the keyboard body and the bracket;
  • the inside of the rotating shaft is hollow, and one end of the rotating shaft is provided with an opening to form a storage cavity.
  • This design method provides a specific implementation method of the connection part.
  • the connecting part includes a flexible connecting piece and a receiving part
  • the flexible connector is used for bending to flexibly connect the keyboard body and the bracket;
  • the storage part is fixed on the bending area of the flexible connector, the interior of the storage part is hollow, and one end of the storage part is provided with an opening to form a storage cavity.
  • This design method provides another specific implementation method of the connecting part.
  • a springing device is further provided in the storage cavity; wherein, when the electronic stylus is stored in the storage cavity, the springing device is in contact with the second end of the electronic stylus.
  • the pressing device is used to eject the electronic stylus from the second end to the first end of the storage cavity in response to the user's pressing operation on the first end of the electronic stylus stored in the storage cavity.
  • the first end is one end of the opening when the electronic stylus is stored in the storage cavity, and the second end is opposite to the first end.
  • the elastic device can exert a certain elastic force on the electronic stylus after being pressed, which is beneficial to take out the electronic stylus from the storage cavity.
  • the present application provides a computer-readable storage medium including computer instructions.
  • the wireless charging system is made to perform various functions of the wireless charging system described in the first aspect and any possible design manner thereof.
  • the present application provides a computer program product.
  • the computer program product When the computer program product is run on a computer, the computer is made to perform various functions of the wireless charging system described in the first aspect and any possible design manner thereof.
  • FIG. 1 is a schematic diagram of a product form of a wireless charging system provided in an embodiment of the present application
  • FIG. 2 is a schematic diagram of a product form of an electronic stylus provided in an embodiment of the present application
  • Fig. 3 is a bottom view of the wireless charging system shown in Fig. 1 after storing the electronic stylus shown in Fig. 2;
  • Fig. 4 is a left side view of the wireless charging system shown in Fig. 1 after storing the electronic stylus shown in Fig. 2;
  • FIG. 5 is a schematic diagram of a system architecture of a wireless charging system provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a system architecture of another wireless charging system provided by an embodiment of the present application.
  • Fig. 7 is a schematic diagram of the system architecture of another wireless charging system provided by the embodiment of the present application.
  • FIG. 8 is a schematic diagram of the hardware structure of a tablet computer in a wireless charging system provided by an embodiment of the present application.
  • FIG. 9 is a schematic diagram of a hardware structure of a wireless keyboard in a wireless charging system provided by an embodiment of the present application.
  • Fig. 10 is a schematic diagram of the product form of another wireless charging system provided by the embodiment of the present application.
  • Fig. 11 is a schematic diagram of the product form of another wireless charging system provided by the embodiment of the present application.
  • Fig. 12 is a schematic diagram of the product form of another wireless charging system provided by the embodiment of the present application.
  • FIG. 13 is a schematic diagram of a product form of a wireless keyboard in a wireless charging system provided by an embodiment of the present application.
  • words such as “exemplary” or “for example” are used as examples, illustrations or illustrations. Any embodiment or design scheme described as “exemplary” or “for example” in the embodiments of the present application shall not be interpreted as being more preferred or more advantageous than other embodiments or design schemes. Rather, the use of words such as “exemplary” or “such as” is intended to present related concepts in a concrete manner.
  • first and second are used for description purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features.
  • a feature defined as “first” and “second” may explicitly or implicitly include one or more of these features.
  • At least one means one or more, and “multiple” means two or more.
  • At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items.
  • at least one item (piece) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single or multiple .
  • connection should be understood in a broad sense, for example, “connection” can be a fixed connection, a sliding connection, or a detachable connection, Or become one, etc.; it can be directly connected or indirectly connected through an intermediary.
  • the embodiment of the present application provides a wireless The charging system can wirelessly charge the electronic stylus while storing the electronic stylus, which realizes the integration of storage and wireless charging, and has good convenience. The embodiment of the present application will be described below with reference to FIG. 1 to FIG. 13 .
  • FIG. 1 is a schematic diagram of a product form of a wireless charging system provided by an embodiment of the present application.
  • the wireless charging system includes a tablet computer 100 and a wireless keyboard 200
  • the wireless keyboard 200 includes: a keyboard body A and a bracket B for placing the wireless keyboard 200 .
  • the keyboard main body A and the bracket B are connected through a connecting part C, and the connecting part C may be a flexible material or a rotating shaft, so that the keyboard main body A and the bracket B can rotate relatively.
  • the tablet computer 100 is placed or sleeved on the bracket B, forming a certain angle with the keyboard body of the wireless keyboard 200 .
  • a storage chamber 201 is provided on the connecting portion C of the wireless keyboard 200 in the wireless charging system, and an opening 202 is provided at one end of the storage chamber 201 .
  • the electronic stylus 300 shown in FIG. 2 can be placed in the storage cavity 201 shown in FIG. 1 through the opening 202 .
  • the shape of the wireless charging system after storing the electronic stylus 300 is as follows:
  • FIG. 3 shows a bottom view of the wireless charging system after the keyboard body A and the bracket B of the wireless keyboard 200 are combined, and the electronic stylus 300 is inserted into the storage cavity 201 through the opening 202 .
  • 4 shows a left side view of the wireless charging system after the tablet computer 100 is placed in the bracket B, the keyboard body A of the wireless keyboard 200 is combined with the bracket B, and the electronic stylus 300 is inserted into the storage cavity 201 through the opening 202 .
  • the tablet computer 100 in the embodiment of the present application can wirelessly charge the wireless keyboard 200.
  • the tablet computer 100 is provided with a wireless charging coil that sends electromagnetic signals during the charging process, and the wireless keyboard 200 is correspondingly provided with a wireless charging coil for receiving electromagnetic signals.
  • the charging coil, the wireless charging coil of the wireless keyboard 200 can be coupled with the wireless charging coil of the tablet computer 100 , and the tablet computer 100 can transmit a wireless charging signal to the wireless keyboard 200 through the wireless charging coil to wirelessly charge the wireless keyboard 200 .
  • the wireless keyboard 200 in the embodiment of the present application can wirelessly charge the electronic stylus 300 , specifically, a wireless charging coil capable of generating electromagnetic signals may be provided in the storage chamber 201 of the wireless keyboard 200 .
  • the wireless keyboard 200 can wirelessly charge the electronic stylus 300 through the wireless charging coil provided in the storage cavity 201.
  • the body of the above-mentioned electronic stylus 300 is also provided with a wireless charging coil, and the wireless charging coil can receive electromagnetic signals emitted from the storage cavity 201 .
  • the wireless charging coil of the wireless keyboard 200 can be coupled with the wireless charging coil of the electronic stylus 300 , and the wireless keyboard 200 transmits a wireless charging signal to the electronic stylus 300 through the coupled wireless charging coil to wirelessly charge the electronic stylus 300 .
  • the tablet computer 100 can also directly wirelessly charge the electronic stylus 300 (not shown in the figure), specifically, the electronic stylus 300 can be adsorbed on the tablet 100, and the tablet 100 is provided with 300 is a wireless charging coil that generates electromagnetic signals.
  • the adsorption position of the electronic stylus 300 is close to the wireless charging coil, and the body of the electronic stylus 300 is provided with a wireless charging coil that can receive electromagnetic signals from the tablet computer 100 .
  • the wireless charging coil of the tablet computer 100 can be coupled with the wireless charging coil of the electronic stylus 300 , and the tablet 100 transmits a wireless charging signal to the electronic stylus 300 through the coupled wireless charging coil to wirelessly charge the electronic stylus 300 .
  • the function of the tablet computer 100 to wirelessly charge the wireless keyboard 200 or the electronic stylus 300 through the wireless coil is called “forward wireless charging function", and the wireless keyboard 200 wirelessly charges the electronic stylus 300 through the wireless charging coil.
  • the charging function is called “reverse wireless charging function”.
  • the embodiment of the present application introduces the principles of wireless charging of the wireless keyboard 200 by the tablet computer 100 and wireless charging of the electronic stylus 300 by the wireless keyboard 200 in conjunction with the accompanying drawings.
  • FIG. 5 shows a schematic diagram of a system architecture of a wireless charging system provided by an embodiment of the present application.
  • the wireless charging system includes a tablet computer 100 , a wireless keyboard 200 and an electronic stylus 300 .
  • the tablet computer 100 includes: a first battery 110, a first wireless output control module 130 and a first wireless output coil 140, the first wireless output control module 130 is electrically connected to the first battery 110, the first wireless output The coil 140 is electrically connected to the first wireless output control module 130 , and a capacitor is arranged around the first wireless output coil 140 , so that the capacitor and the first wireless output coil 140 form a resonant circuit.
  • the wireless keyboard 200 includes: a second battery 210 , a first charging control module 220 , a first wireless receiving control module 230 , a first wireless receiving coil 240 and a second wireless output coil 250 .
  • the second battery 210 is electrically connected to the first charging control module 220
  • the first charging control module 220 is electrically connected to the first wireless receiving control module 230
  • the first wireless receiving control module 230 is electrically connected to the first wireless receiving coil 240
  • the second wireless output coil 250 is electrically connected to the first wireless receiving coil 240.
  • the second wireless output coil 250 may be connected to the first wireless receiving coil 240 through a matching circuit.
  • a first capacitor and a second capacitor are arranged, the first capacitor is arranged near the first wireless receiving coil 240, and the first The value of the capacitor and the distance between the first capacitor and the first wireless receiving coil 240 can be set according to the inductance value of the first wireless receiving coil 240, so that the first capacitor and the first wireless receiving coil 240 form resonance or quasi-resonance circuit to increase transmission power.
  • the second capacitor is set close to the second wireless output coil 250, the value of the second capacitor and the distance between the second capacitor and the second wireless output coil 250 can be set according to the inductance value of the second wireless output coil 250, the second The capacitor forms resonance or quasi-resonance with the second wireless output coil 250 to increase transmission power.
  • devices such as switches may also be provided in the matching circuit.
  • the second wireless output coil 250 is directly connected to the first wireless receiving coil 240 through a matching circuit. After the first wireless receiving coil 240 receives the AC signal from the first wireless output coil 140, it directly transmits the AC signal to the second wireless output coil 250 through the matching circuit.
  • the first wireless receiving coil 240 receives the AC signal from the first wireless output coil 140, it is necessary to set an RX chip in the wireless keyboard 200, and the RX chip is used to receive the first wireless receiving coil 240.
  • the received AC signal is converted into a DC signal, and a TX chip is set, and the TX chip is used to convert the above-mentioned DC signal into an AC signal and transmit it to the second wireless output coil 250 .
  • a resonant circuit is formed by setting the first wireless receiving coil 240 with a suitable inductance value, and setting a first capacitor near it, and setting a second wireless output coil 250 with a suitable inductance value, and setting it nearby The second capacitor is matched to form a resonant circuit.
  • a matching circuit is arranged between the first wireless receiving coil 240 and the second wireless output coil 250 to realize the direct transmission of the AC signal without the conversion process of AC to DC and DC to AC.
  • the RX chip and the TX chip needed for direct current conversion to alternating current reduce the link length of wireless charging, improve the reliability and efficiency of wireless charging, and reduce the cost of the wireless keyboard 200 .
  • the charging process of the wireless keyboard 200 by the tablet computer 100 is as follows: the first battery 110 in the tablet computer 100 can output a DC voltage to the first wireless output control module 130, and the first wireless output control module 130 converts the DC power The alternating current is output to the first wireless receiving coil 240 .
  • the second wireless output coil 250 in the wireless keyboard 200 receives the alternating current signal transmitted by the first wireless receiving coil 240, and transmits it to the first wireless receiving control module 230, and the first wireless receiving control module 230 can convert the received alternating current into direct current, and then deliver the direct current to the first charging control module 220 to charge the second battery 210 .
  • the electronic stylus 300 includes: a third battery 310 , a second charging control module 320 , a second wireless receiving control module 330 and a second wireless receiving coil 340 .
  • the third battery 310 is electrically connected to the second charging control module 320
  • the second charging control module 320 is electrically connected to the second wireless receiving control module 330
  • the second wireless receiving control module 330 is electrically connected to the second wireless receiving coil 340.
  • the second wireless receiving coil 340 is provided with a capacitor so that the capacitor and the second wireless receiving coil 340 form a resonant circuit.
  • the above-mentioned first wireless output control module 130 can be the TX chip of the tablet computer 100;
  • the second charging control module 320 may be a pen charger of the electronic stylus 300 , and the second wireless receiving control module 330 may be the RX chip of the electronic stylus 300 .
  • the first battery 110 of the tablet computer 100 can be used as a power supply to supply power, and the first wireless output control module 130 on the tablet computer 100 can receive the direct current input by the first battery 110 Signal.
  • the first wireless output control module 130 converts the received DC signal into an AC signal, and then inputs the AC signal to the first wireless output coil 140, and the first wireless output coil 140 generates an AC signal in response to the AC signal. variable electromagnetic field.
  • the first wireless receiving coil 240 on the wireless keyboard 200 is coupled with the first wireless output coil 140 on the tablet computer 100 .
  • the first wireless receiving coil 240 induces the alternating electromagnetic field sent by the first wireless output coil 140 to generate an alternating current signal, and then sends the alternating current signal to the first wireless receiving control module 230, and the first wireless receiving control module 230 can transmit the alternating current signal to the first wireless receiving control module 230
  • the alternating current signal is rectified into a direct current signal, and then the direct current signal is input to the first charging control module 220, and the first charging control module 220 can manage the direct current signal, for example, manage the input current and voltage, and then
  • the direct current signal is input to the second battery 210 to charge the second battery 210 , and the second battery 210 can be used as a power source of the wireless keyboard 200 .
  • the first wireless receiving coil 240 induces the alternating electromagnetic field sent by the first wireless output coil 140, can generate an alternating current signal, and can directly input a part of the AC signal to the second wireless output coil 250 through a matching circuit, and the second wireless output coil 250 may generate an alternating magnetic field in response to the alternating signal.
  • the second wireless receiving coil 340 on the electronic stylus 300 is coupled with the second wireless output coil 250 on the wireless keyboard 200 . After the electronic stylus 300 is stored in the storage cavity 201 on the wireless keyboard 200, and the second wireless output coil 250 in the storage cavity 201 generates an alternating magnetic field, the second wireless receiving coil 340 on the electronic stylus 300 starts to work. .
  • the second wireless receiving coil 340 senses the alternating electromagnetic field sent by the second wireless output coil 250, can generate an alternating current signal, and input the alternating current signal to the second wireless receiving control module 330, the second wireless receiving control module 330
  • the received AC signal is rectified into a DC signal, and then the DC signal is input to the second charging control module 320, and the second charging control module 320 processes the DC signal, and then inputs it to the third battery 310, realizing the charging of the second battery.
  • Three batteries 310 are charged.
  • the first wireless output control module 130 , the first wireless receiving control module 230 , the second wireless receiving control module 330 and the connection circuit between the first wireless receiving coil 240 and the second wireless output coil 250 may include a matching circuit.
  • the matching circuit may include capacitor combinations, switches and the like.
  • the matching circuit in the first wireless output control module 130 is used to form LC resonance with the first wireless output coil 140 to improve the transmission efficiency of the first wireless output coil 140 .
  • the matching circuit in the first wireless receiving control module 230 is used to form LC resonance with the first wireless receiving coil 240 to improve the receiving efficiency of the first wireless receiving coil 240 .
  • the matching circuit between the first wireless receiving coil 240 and the second wireless output coil 250 can be used to form LC resonance with the first wireless receiving coil 240 to improve the receiving efficiency of the first wireless receiving coil 240, and can also be used to communicate with the first wireless receiving coil 240.
  • the second wireless output coil 250 forms an LC resonance to improve the transmission efficiency of the second wireless output coil 250 , and reference may be made to the description of the first capacitor and the second capacitor in the foregoing content.
  • the matching circuit in the second wireless receiving control module 330 is used to form LC resonance with the second wireless receiving coil 340 to improve the receiving efficiency of the second wireless receiving coil 340 .
  • the tablet computer 100 further includes a third wireless output coil 150 , and the third wireless output coil 150 is electrically connected to the first wireless output control module 130 .
  • FIG. 6 shows a schematic diagram of a system architecture of another wireless charging system provided by an embodiment of the present application.
  • the third wireless output coil 150 provided on the tablet computer 100 can be used to charge the electronic stylus 300, specifically, the electronic stylus 300 can be adsorbed on the tablet computer 100, or placed on the tablet computer 100, making it close to the third wireless output coil 150 on the tablet 100.
  • the tablet computer 100 wirelessly charges the electronic stylus 300
  • the first battery 110 of the tablet computer 100 can be used as a power supply to supply power to the first wireless output control module 130, and the first wireless output control module 130 receives the first battery 110
  • the input DC signal is then converted to an AC signal by the DC signal it receives.
  • the third wireless output coil 150 is electrically connected to the first wireless output control module 130, the first wireless output control module 130 can input the AC signal to the third wireless output coil 150, and the third wireless output coil 150 responds to the AC signal.
  • the second wireless receiving coil 340 on the electronic stylus 300 can be coupled with the third wireless output coil 150 on the tablet computer 100 .
  • the second wireless receiving coil 340 senses the alternating electromagnetic field emitted by the third wireless output coil 150, can generate an alternating current signal, and
  • the AC signal is input to the second wireless receiving control module 330, and the second wireless receiving control module 330 rectifies the received AC signal into a DC signal, and then inputs the DC signal to the second charging control module 320, and the second charging
  • the control module 320 processes the direct current signal and inputs it to the third battery 310 to charge the third battery 310 .
  • both the first wireless output coil 140 and the third wireless output coil 150 are electrically connected to the first wireless output control module 130, that is, the first wireless output control module 130 controls the first wireless output Both the wireless charging energy of the output coil 140 and the third wireless output coil 150 are controlled.
  • the first wireless output control module 130 controls the first wireless output Both the wireless charging energy of the output coil 140 and the third wireless output coil 150 are controlled.
  • the first wireless output coil 140 and the third wireless output coil 150 have sufficient voltage and current when performing wireless charging, generally only one wireless charging coil works when the tablet computer 100 performs forward wireless charging.
  • a first control switch 160 is provided between the first wireless output coil 140 and the first wireless output control module 130, and a control switch 160 is provided between the third wireless output coil and the first wireless output control module 130.
  • the second control switch 170 The working states of the first wireless output coil 140 and the third wireless output coil can be adjusted by controlling the states of the first control switch 160 and the second control switch 170 .
  • the first control switch 160 can be closed, and the second control switch 170 can be disconnected.
  • the tablet computer 100 is only in the state of wirelessly charging the wireless keyboard 200, that is, the first wireless charging coil is in the working state, and the third wireless output The coil 150 is in a non-working state, which can provide a stable current, voltage and sufficient energy for the first wireless charging coil 140 . It is also possible to close the second control switch 170 and disconnect the first control switch 160.
  • the tablet computer 100 is only wirelessly charging the electronic stylus 300, that is, the third wireless charging coil 150 is in the working state, and the first wireless charging coil 140 is in a stop working state, which can provide a stable current, voltage and sufficient energy for the third wireless charging coil 150 .
  • the first wireless output control module 130 is generally integrated on the TX chip of the tablet computer 100, therefore, by adopting the above-mentioned setting, only one TX chip can be set on the tablet computer 100 to control the first wireless output coil 140 and the third wireless output coil 140.
  • the coil 150 is controlled, which can save costs.
  • the tablet computer 100 further includes a second wireless output control module 180 and a third wireless output coil 150, the third wireless output coil 150 is electrically connected to the second wireless output control module 180, and the second wireless output control module 180
  • the module 180 is electrically connected with the first battery 110 .
  • FIG. 7 shows a schematic diagram of a system architecture of another wireless charging system provided by an embodiment of the present application.
  • the first battery 110 of the tablet computer 100 can be used as a power supply to supply power to the second wireless output control module 180, and the second wireless output control module 180 receives the DC signal input by the first battery 110, and then converts the received DC signal into an AC signal. Since the third wireless output coil 150 is electrically connected to the second wireless output control module 180, the second wireless output control module 180 can input the AC signal to the third wireless output coil 150, and the third wireless output coil 150 responds to the AC signal. An electrical signal that produces an alternating electromagnetic field.
  • the electronic stylus 300 and the third wireless output coil 150 please refer to the description in the foregoing embodiments, and details are not repeated here.
  • the tablet computer 100 can directly charge the electronic stylus 300 .
  • the tablet computer 100 can also wirelessly charge the wireless keyboard 200 , and while charging the wireless keyboard 200 , the wireless keyboard 200 can also charge the electronic stylus 300 .
  • the wireless keyboard 200 can directly send the AC signal received by the first wireless receiving coil 240 to the electronic stylus 300 through the second wireless receiving coil 250 without communicating. - DC and DC-AC conversion. Since the wireless keyboard 200 is the wireless charging link of the electronic stylus 300, there is no corresponding module for converting DC signals to AC signals, such as a TX chip, so the second battery 210 in the wireless keyboard 200 cannot be used for charging the electronic stylus 300. Charge.
  • a corresponding device for example, a tablet computer 100
  • a corresponding device is required to wirelessly charge the wireless keyboard 200 .
  • the second wireless output control module 180 can be the TX chip of the tablet computer 100.
  • two TX chips are equivalent to setting the first wireless output coil 140 and the third wireless output coil 150 to control respectively.
  • the two TX chips The chip can independently control indicators such as current and voltage input to the first wireless output coil 140 and the third wireless output coil 150, so that the first wireless output coil 140 and the third wireless output coil 150 can work simultaneously, that is, when electronic handwriting When the pen 300 is attached to the tablet computer 100 , the tablet computer 100 can wirelessly charge the electronic stylus 300 and the wireless keyboard 200 at the same time.
  • the tablet computer 100 further includes a voltage stabilization control module 120, and the voltage stabilization control module 120 is connected in series between the first battery 110 and the first wireless output control module 130. If the tablet computer When the second wireless output control module 180 is provided in 100 , the voltage stabilization control module 120 is also connected in series between the first battery 110 and the second wireless output control module 180 at the same time.
  • the voltage stabilizing control module 120 can be a BOOST chip or a BUCK-BOOST chip, etc.
  • the main function of the voltage stabilizing control module 120 is: when the batteries are in different power levels, the first wireless output control module 130 and/or the second wireless output
  • the control module 180 provides a stable voltage.
  • the electrical connection mentioned above includes direct electrical connection and indirect electrical connection.
  • the second wireless output control module 180 or the first wireless output control module 130 can be directly electrically connected to the first battery 110, and the second wireless output control module 180 or the first The wireless output control module 130 can also be directly connected to the voltage stabilization control module 120. Since the voltage stabilization control module 120 is directly connected to the first battery 110, the second wireless output control module 180 or the first wireless output control module 130 is equivalent to the first wireless output control module 130.
  • a battery 110 is electrically connected indirectly.
  • FIG. 5 , FIG. 6 and FIG. 7 only show some schematic structural diagrams of possible charging circuits of the wireless charging system.
  • the charging circuit structure of the wireless charging system in the embodiment of the present application includes but is not limited to the structures shown in FIG. 5 to FIG. 7 .
  • the wireless keyboard 200 may further include a processor connected to the first wireless receiving control module 230 , the first charging control module 220 and the second wireless output control module 260 .
  • the processor is used to detect whether the first wireless receiving control module 230 has current input.
  • the processor is also used to control the first charging control module 220 to realize the forward wireless charging function of the wireless keyboard 200 .
  • the wireless keyboard 200 may include a wireless communication module 500, a processor 510, a memory 520, a sensor 530, a display 540, a charging interface 550, a charging management module 560, a first wireless charging coil 570, a third wireless Charging coil 580, battery 590, etc.
  • the structure shown in this embodiment does not constitute a specific limitation on the wireless keyboard 200 .
  • the wireless keyboard 200 may include more or fewer components than shown, or combine certain components, or separate certain components, or arrange different components.
  • the illustrated components can be realized in hardware, software or a combination of software and hardware.
  • the memory 520 may be used to store program codes, such as program codes for wirelessly charging the wireless keyboard 200 and/or the electronic stylus 300 .
  • the Bluetooth address for uniquely identifying the tablet computer 100 may also be stored in the memory 520 .
  • the memory 520 may also store connection data of electronic devices successfully paired with the tablet computer 100 before.
  • the connection data may be the Bluetooth address of the electronic device successfully paired with the tablet computer 100 .
  • the tablet computer 100 can be automatically paired with the electronic device without configuring a connection therebetween, such as performing legality verification.
  • the above bluetooth address may be a media access control (media access control, MAC) address.
  • the processor 510 may be configured to execute the above application program codes, and call related modules to realize the functions of the tablet computer 100 in the embodiment of the present application. For example, the forward wireless charging function of the tablet computer 100, the wireless communication function and the like are realized.
  • the processor 510 may include one or more processing units, and different processing units may be independent devices, or may be integrated in one or more processors 510 .
  • the processor 510 may be an integrated control chip, or may be composed of a circuit including various active and/or passive components, and the circuit is configured to execute the functions belonging to the processor 510 described in the embodiments of this application.
  • the processor of the tablet computer 100 may be a microprocessor.
  • the wireless communication module 500 can be used to support the connection between the tablet computer 100 and other electronic devices including Bluetooth (bluetooth, BT), global navigation satellite system (global navigation satellite system, GNSS), wireless local area network (wireless local area networks, WLAN) (such as Wireless fidelity (wireless fidelity, Wi-Fi) network), frequency modulation (frequency modulation, FM), near field communication technology (near field communication, NFC), infrared technology (infrared, IR) and other wireless communication data exchange.
  • Bluetooth blue, BT
  • global navigation satellite system global navigation satellite system
  • GNSS global navigation satellite system
  • wireless local area network wireless local area networks, WLAN
  • frequency modulation frequency modulation
  • FM near field communication technology
  • NFC near field communication technology
  • infrared technology infrared, IR
  • the wireless communication module 500 may be a Bluetooth chip.
  • the tablet computer 100 can pair and establish a wireless connection with the Bluetooth chip of other electronic devices through the Bluetooth chip, so as to realize wireless communication between the tablet computer 100 and other electronic devices through the wireless connection.
  • the wireless communication module 500 may further include an antenna.
  • the wireless communication module 500 receives electromagnetic waves via the antenna, frequency-modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 510 .
  • the wireless communication module 500 can also receive a signal to be transmitted from the processor 510, frequency-modulate it, amplify it, and convert it into electromagnetic waves to radiate through the antenna.
  • tablet 100 may support wired charging.
  • the charging management module 560 may receive a charging input from a wired charger through the charging interface 550 to charge the battery 590 .
  • the tablet computer 100 may support the wireless charging function of the wireless keyboard 200 and/or the electronic stylus 300 .
  • the charging management module 560 can input electrical signals to the first wireless charging coil 570 and/or the third wireless charging coil 580 .
  • the first wireless charging coil 570 and the third wireless charging coil 580 are respectively connected to the charging management module 560 through matching circuits.
  • the first wireless charging coil 570 and/or the third wireless charging coil 580 can generate an alternating electromagnetic field in response to an AC signal input by the charging management module 560 to wirelessly charge the wireless keyboard 200 and/or the electronic stylus 300 .
  • the charging management module 560 can also provide power for the tablet computer 100 while managing external wireless charging.
  • the charging management module 560 receives the input of the battery 590 to provide power for the processor 510, the memory 520, the sensor 530, the external memory and the wireless communication module 500, etc.
  • the charging management module 560 can also be used to monitor parameters such as the battery capacity of the battery 590, the number of battery cycles, and the state of health of the battery (leakage, impedance).
  • the charging management module 560 may also be disposed in the processor 510 .
  • a touch sensor may be integrated in the above-mentioned display screen 540 .
  • the tablet computer 100 can receive a user's control command on the tablet computer 100 through the display screen 540 .
  • the structure shown in the embodiment of the present application does not constitute a specific limitation on the tablet computer 100 . It may have more or fewer components than shown in Figure 8, may combine two or more components, or may have a different configuration of components.
  • the outer surface of the tablet computer 100 may also include components such as buttons, indicator lights (which can indicate states such as battery power, incoming/outgoing calls, and pairing mode), and display screens (which can prompt users for relevant information).
  • the button may be a physical button or a touch button (used in conjunction with a touch sensor), etc., and is used to trigger operations such as powering on, powering off, starting charging, and stopping charging.
  • FIG. 9 is a schematic structural diagram of a wireless keyboard 200 in a wireless charging system provided by an embodiment of the present application.
  • the wireless keyboard 200 may include a processor 610, a memory 620, a wireless charging receiving module 630, a charging management module 640, a second wireless charging coil 650, a battery 660, a wireless communication module 670, a touch panel 680, Keyboard 690 etc.
  • the above-mentioned processor 610, memory 620, wireless charging receiving module 630, charging management module 640, battery 660, wireless communication module 670, touch panel 680, keyboard 690, etc. can all be set on the keyboard body of the wireless keyboard 200 (as shown in the figure 1 on the keyboard body A).
  • the above-mentioned wireless charging coil 650 may be arranged in a connection part (connection part C shown in FIG. 1 ) for movably connecting the keyboard body and the bracket.
  • the structure shown in this embodiment does not constitute a specific limitation on the wireless keyboard 200 .
  • the wireless keyboard 200 may include more or fewer components than shown, or combine certain components, or separate certain components, or arrange different components.
  • the illustrated components can be realized in hardware, software or a combination of software and hardware.
  • the memory 620 may be used to store program codes, such as program codes for wirelessly charging the electronic stylus 300 .
  • a Bluetooth address for uniquely identifying the wireless keyboard 200 may also be stored in the memory 620 .
  • the memory 620 may also store connection data of an electronic device that has been successfully paired with the wireless keyboard 200 before.
  • the connection data may be the Bluetooth address of the electronic device successfully paired with the wireless keyboard 200 .
  • the wireless keyboard 200 can be automatically paired with the electronic device without configuring the connection therebetween, such as performing legality verification.
  • the above bluetooth address may be a media access control (media access control, MAC) address.
  • the processor 610 can be used to execute the above application codes, and call related modules to realize the functions of the wireless keyboard 200100 in the embodiment of the present application.
  • the wireless keyboard 200 realizes forward wireless charging function, reverse wireless charging function, wireless communication function and so on.
  • the processor 610 may include one or more processing units, and different processing units may be independent devices, or may be integrated in one or more processors 610 .
  • the processor 610 may be an integrated control chip, or may be composed of a circuit including various active and/or passive components, and the circuit is configured to execute the functions belonging to the processor 610 described in the embodiments of this application.
  • the processor of the wireless keyboard 200 may be a microprocessor.
  • the wireless communication module 670 can be used to support the connection between the wireless keyboard 200 and other electronic devices including Bluetooth (bluetooth, BT), global navigation satellite system (global navigation satellite system, GNSS), wireless local area network (wireless local area networks, WLAN) (such as Wireless fidelity (wireless fidelity, Wi-Fi) network), frequency modulation (frequency modulation, FM), near field communication technology (near field communication, NFC), infrared technology (infrared, IR) and other wireless communication data exchange.
  • Bluetooth blue, BT
  • global navigation satellite system global navigation satellite system
  • GNSS global navigation satellite system
  • wireless local area network wireless local area networks, WLAN
  • frequency modulation frequency modulation
  • FM near field communication technology
  • NFC near field communication technology
  • infrared technology infrared, IR
  • the wireless communication module 670 can be a Bluetooth chip.
  • the wireless keyboard 200 may be a Bluetooth keyboard.
  • the wireless keyboard 200 can pair and establish a wireless connection with the Bluetooth chip of other electronic devices through the Bluetooth chip, so as to realize wireless communication between the wireless keyboard 200 and other electronic devices through the wireless connection.
  • the wireless communication module 670 may further include an antenna.
  • the wireless communication module 670 receives electromagnetic waves via the antenna, frequency-modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 610 .
  • the wireless communication module 670 can also receive the signal to be sent from the processor 610, frequency-modulate it, amplify it, and convert it into electromagnetic wave and radiate it through the antenna.
  • wireless keyboard 200 may support forward wireless charging.
  • the charging management module 640 can receive wireless charging input through the second wireless charging coil 650 of the wireless keyboard 200 .
  • the charging management module 640 is connected to the wireless charging coil 650 through a matching circuit.
  • the second wireless charging coil 650 can be coupled with the first wireless charging coil 570 of the tablet computer 100 to induce the alternating electromagnetic field emitted by the first wireless charging coil 570 of the tablet computer 100 to generate an alternating electric signal.
  • the alternating electric signal generated by the second wireless charging coil 650 is transmitted to the charging management module 640 through the matching circuit, so as to wirelessly charge the battery 660 .
  • the charging management module 640 can also provide power for the wireless keyboard 200 while charging the battery 660 .
  • the charging management module 640 receives the input of the battery 660 to provide power for the processor 610, the memory 620, the external memory and the wireless communication module 670 and so on.
  • the charging management module 640 can also be used to monitor parameters such as the battery capacity of the battery 660, the number of battery cycles, and the state of health of the battery (leakage, impedance).
  • the charging management module 640 may also be disposed in the processor 610 .
  • FIG. 9 shows a schematic diagram of the hardware structure of the wireless keyboard 200 by taking the matching circuit integrated in the charging management module 640 as an example.
  • the wireless charging receiving module 630 may integrate all the functions of the first wireless receiving coil 240 and the first wireless receiving control module 230 shown in FIGS. 5 to 7 .
  • the wireless charging receiving module 630 of the wireless keyboard 200 can be connected to an electronic device such as the tablet computer 100 through a wireless charging device, and the electronic device such as the tablet computer 100 supplies power to the wireless keyboard 200 .
  • the wireless keyboard 200 shown in FIG. 9 is the wireless keyboard 200 shown in FIG. 5, FIG. 6 or 7, the charging management module shown in FIG. All functions of the first charging control module 220.
  • a touch sensor is integrated in the above-mentioned touch panel 680 .
  • the notebook computer can receive user's control commands on the notebook computer through the touch panel 680 and the keyboard 690 .
  • the structure shown in the embodiment of the present application does not constitute a specific limitation on the wireless keyboard 200 . It may have more or fewer components than shown in FIG. 9 , may combine two or more components, or may have a different configuration of components.
  • the casing of the wireless keyboard 200 may also be provided with a storage cavity 201 for storing the electronic stylus 300 .
  • the second wireless charging coil 650 is disposed in the storage cavity 201 and is used for charging the electronic stylus 300 wirelessly after the electronic stylus 300 is stored in the storage cavity 201 .
  • the outer surface of the wireless keyboard 200 may also include components such as buttons, indicator lights (which can indicate battery status, incoming/outgoing calls, pairing mode, etc.), display screens (which can prompt users for relevant information), and the like.
  • the button may be a physical button or a touch button (used in conjunction with a touch sensor), etc., and is used to trigger operations such as powering on, powering off, starting charging, and stopping charging.
  • All the wireless keyboards 200 provided in the following embodiments may include the above hardware structure.
  • the wireless keyboard 200 provided by the embodiment of the present application will be described in detail below.
  • the wireless keyboard 200 includes: a keyboard body A, a bracket B for placing the tablet computer 100 , and a connecting portion C for movably connecting the keyboard body A and the bracket B.
  • the connecting part C includes a receiving cavity 201 with an opening 202 at one end.
  • the storage cavity 201 is used to store the electronic stylus 300 shown in FIG. 2 through the opening 202 .
  • the connecting part C may include a flexible connecting part C 1 and a receiving part C 2 .
  • the flexible connecting member C 1 is used for bending to movably connect the keyboard body A and the bracket B.
  • the flexible connector C1 may be a flexible and foldable material.
  • the receiving part C2 is fixed on the bending area of the flexible connecting part C1 .
  • the storage part C2 is hollow inside, and one end of the storage part C1 is provided with an opening 202 to form a storage cavity 201 .
  • the shape of the inner wall of the receiving part C 2 (ie, the receiving cavity 201 ) is similar to the shape of the pen body of the electronic stylus 300 .
  • the inner wall of the receiving part C2 may be in any shape such as a cylinder or a polygonal prism.
  • the receiving part C2 can be made of plastic material.
  • FIG. 10 is a perspective view of the wireless keyboard 200 before the keyboard main body A and the bracket B of the wireless keyboard 200 are combined, and the electronic stylus 300 is not inserted into the storage cavity 201 .
  • 11 is a perspective view of the wireless keyboard 200 when the keyboard body A and the bracket B of the wireless keyboard 200 shown in FIG.
  • FIG. 12 is a perspective view of the wireless keyboard 200 after the keyboard body A and the bracket B of the wireless keyboard 200100 shown in FIG.
  • FIG. 13 shows a schematic diagram of a product form of a wireless keyboard in a wireless charging system.
  • the connecting part C includes a rotating shaft C3 for movably connecting the keyboard body A and the bracket B.
  • the interior of the rotating shaft C 3 is hollow, and an opening 202 is provided at one end of the rotating shaft C 3 to form a receiving chamber 201 .
  • a second wireless output coil 250 is disposed in the storage cavity 201 described in any of the above-mentioned embodiments, and the keyboard main body A further includes a first wireless receiving coil 240 . As shown in FIGS. 5 to 7 , the second wireless output coil 250 is connected to the first wireless receiving coil 240 . After receiving the AC signal from the first wireless output coil 140 , the first wireless receiving coil 240 directly transmits the AC signal to the second wireless output coil 250 through the matching circuit.
  • the first wireless receiving coil 240 receives the AC signal from the first wireless output coil 140, it is necessary to set an RX chip in the wireless keyboard 200, and the RX chip is used to receive the first wireless receiving coil 240.
  • the received AC signal is converted into a DC signal, and a TX chip is set to convert the above-mentioned DC signal into an AC signal and transmit it to the second wireless output coil 250 .
  • a resonant circuit is formed by setting the first wireless receiving coil 240 with a suitable inductance value, and setting a first capacitor near it, and setting a second wireless output coil 250 with a suitable inductance value, and setting it nearby The second capacitor is matched to form a resonant circuit.
  • a matching circuit is set between the first wireless receiving coil 240 and the second wireless output coil 250 to realize direct transmission of AC signals, reduce the use of RX chips and TX chips, reduce the link length of wireless charging, and improve wireless charging. reliability and efficiency, reducing the cost of the wireless keyboard 200.
  • the first wireless receiving control module 230 is used to rectify the AC signal generated by the first wireless receiving coil 240 into a DC signal, perform control processing, and then transmit the DC signal to the second battery 210 .
  • the above-mentioned second wireless output coil 250 is used to generate an alternating electromagnetic field in response to an alternating current signal to wirelessly charge the electronic stylus 300 stored in the storage cavity 201.
  • the wireless keyboard 200 provided by the embodiment of the present application not only has the storage function of the electronic stylus 300, but also can wirelessly charge the electronic stylus 300, while reducing the link length of wireless charging and improving the reliability of wireless charging. Sex and efficiency, reducing costs.
  • the second wireless output control module 260 can receive the direct current signal from the second battery 210 through the first charging control module 220 after detecting that the electronic stylus 300 is stored in the storage cavity 201 (that is, into the box), and convert the direct current signal into an alternating current signal. In this way, the second wireless output coil 250 can generate an alternating electromagnetic field in response to the alternating current signal to wirelessly charge the electronic stylus 300 stored in the storage cavity 201 .
  • the second wireless output control module 260 may also stop receiving the DC signal from the second battery 210 when detecting that the electronic stylus 300 is taken out of the storage chamber 201 (ie out of the box). Or, the processor of the wireless keyboard 200 can detect the out-of-box and in-box of the electronic stylus 300, and then notify the second wireless output control module 260 of the detection result; or, the processor can instruct the second wireless output control module 260 according to the detection result The control module 260 executes corresponding events.
  • the detection method for storing the electronic stylus 300 into the storage cavity 201 (putting the electronic stylus 300 into the box) and taking the electronic stylus 300 out of the storage cavity 201 (out of the box of the electronic stylus 300 ) can refer to
  • the box-out and box-in detection methods in conventional technology such as the box-out and box-in detection methods of TWS earphones in conventional technology; the embodiments of this application will not be described here.
  • the wireless keyboard 200 charges the electronic stylus 300
  • a corresponding device such as a tablet computer 100
  • the second battery 210 in the wireless keyboard 200 can store a certain amount of electricity for powering the wireless keyboard 200 , but the electricity stored in the second battery 210 cannot be used for reverse charging the electronic stylus 300 .
  • the second battery 210 provides an energy source for preheating the battery cells; then, before the second battery 210 is charged, the power of the second battery 210 will be consumed first. The more times the second battery 210 is charged and discharged, the greater the consumption of the second battery 210 will be, which affects the service life of the second battery 210 .
  • the direct current signal can charge the second battery 210 .
  • the power of the second battery 210 may first decrease and then increase, which may easily cause unnecessary misunderstandings for the user and make the user mistakenly believe that the second battery 210 is faulty.
  • the DC signal input by the first wireless receiving control module 230 provides an energy source for battery preheating, which can prevent the user from mistakenly thinking that the second battery 210 is faulty, and can also reduce the need for The unnecessary consumption of the second battery 210 prolongs the service life of the second battery 210 .
  • a pressing device is also arranged in the above-mentioned storage cavity 201 .
  • the pressing device is in contact with the second end 302 of the electronic stylus 300 .
  • the first end 301 of the electronic stylus 300 is one end located at the opening 202 when the electronic stylus 300 is stored in the storage cavity 201 ; the second end 302 is an end opposite to the first end 301 .
  • the pressing device is used to eject the electronic stylus 300 from the second end 302 to the direction of the first end 301 out of the storage cavity in response to the user's pressing operation on the first end 301 of the electronic stylus 300 stored in the storage cavity 201 201.
  • the spring pressing device is helpful for the user to take out the electronic stylus 300 from the storage cavity 201 of the wireless keyboard 200 .
  • the embodiment of the present application also provides a computer storage medium, the computer storage medium includes computer instructions, and when the computer instructions are run on the wireless keyboard 200, the wireless keyboard 200 executes the wireless charging system in the above embodiment. individual functions or steps.
  • An embodiment of the present application further provides a computer program product, which, when the computer program product is run on a computer, causes the computer to perform various functions or steps performed by the wireless charging system in the foregoing embodiments.
  • the disclosed devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be Incorporation or may be integrated into another device, or some features may be omitted, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the unit described as a separate component may or may not be physically separated, and the component displayed as a unit may be one physical unit or multiple physical units, that is, it may be located in one place, or may be distributed to multiple different places . Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.
  • the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a readable storage medium.
  • the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the software product is stored in a storage medium Among them, several instructions are included to make a device (which may be a single-chip microcomputer, a chip, etc.) or a processor (processor) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: various media that can store program codes such as U disk, mobile hard disk, read only memory (ROM), random access memory (random access memory, RAM), magnetic disk or optical disk.

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Abstract

本申请公开一种无线充电系统，涉及终端技术领域，该无线充电系统具有可以在收纳电子手写笔的同时，为电子手写笔进行无线充电的功能，实现了收纳和无线充电一体化，并且实现了减小无线充电链路的长度，链路中减少了芯片的使用，提高了充电的效率和可靠性，减少了成本。该无线充电系统包括平板电脑、无线键盘和电子手写笔，无线键盘包括键盘主体、支架以及连接部，连接部包括一端设有开口的收纳腔。平板电脑中设置有第一发送装置，键盘主体中设置有第一接收装置，收纳腔内设置有第二发送装置，第一接收装置接收第一发送装置发出的交流电信号，然后直接将该交流电信号传输给第二发送装置，第二发送装置用于为收纳在收纳腔内的电子手写笔无线充电。

Description

一种无线充电系统
本申请要求于2021年07月30日提交国家知识产权局、申请号为202110871289.4、发明名称为“一种无线充电系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实例涉及终端技术领域，尤其涉及一种无线充电系统。
背景技术
随着科技的发展，一些电子产品(如平板电脑)已经配备无线键盘和电子手写笔等配件，无线键盘作为输入设备，具有输入速度快的优点，电子手写笔作为一种新型输入设备，具有输入便捷、可实现亲笔文字以及可进行身份验证等优点。
目前，主要通过有线充电和无线充电两种方式对电子手写笔进行充电，现有的有线充电通常是在电子手写笔上设置有线充电接口，然后通过线缆连接到适配器等供电设备上，这种充电方式难以实现电子手写笔的完整性和美观性。现有的无线充电通常是在平板电脑和电子手写笔上均设置有无线充电线圈，然后将电子手写笔吸附在平板电脑上，电子手写笔上的无线充电线圈与平板电脑上的无线充电线圈耦合，实现为电子手写笔无线充电。
但是，上述充电方案中，由于平板电脑存在吸附能力不强的问题，电子手写笔容易从平板电脑上掉落。此外，无线键盘和电子手写笔作为附件在进行收纳时，无线键盘和平板电脑一般可以作为一个整体进行收纳，而电子手写笔需要额外进行收纳，导致平板电脑、无线键盘和电子手写笔作为一个配套的系统，其便携性较差，而且现有充电系统的充电链路中一般设置有多个芯片，导致成本较高。
发明内容
本申请提供一种无线充电系统，该无线充电系统具有可以在收纳电子手写笔的同时，为电子手写笔进行无线充电的功能，实现了收纳和无线充电一体化，具备良好的便捷性，并且实现了减小无线充电链路的长度，链路中减少了芯片的使用，提高了充电的效率和可靠性，减少了成本。
第一方面，本申请提供一种无线充电系统，该系统包括平板电脑、无线键盘和电子手写笔，无线键盘包括键盘主体、用于放置平板电脑的支架，以及用于活动连接键盘主体和支架的连接部。
上述平板电脑中设置有第一电池、第一无线输出控制模块和第一无线输出线圈，第一无线输出控制模块与第一电池连接，第一无线输出线圈与第一无线输出控制模块连接。
上述键盘主体中设置有第一无线接收线圈、第一无线接收控制模块、第一充电控制模块和第二电池，第一无线接收线圈接收第一无线输出线圈发出的电磁信号，第一无线接收控制模块与第一无线接收线圈连接，第一充电控制模块与第一无线接收控制模块连接，第二电池与第一充电控制模块连接。
上述连接部包括一端设有开口的收纳腔，收纳腔用于经由开口收纳电子手写笔。
收纳腔内设置有第二无线输出线圈，第二无线输出线圈和第一无线接收线圈连接，第二无线输出线圈用于为收纳在收纳腔内的电子手写笔无线充电。
在此基础上，通过设置两级无线充电装置，实现平板电脑对无线键盘进行无线充电，以及无线键盘对电子手写笔进行无线充电。其中，第一无线输出控制模块和第一无线输出线圈，第一无线接收线圈和第一无线接收控制模块，构成了第一级无线充电装置，实现平板电脑对无线键盘进行无线充电；直接相连的第一无线接收线圈和第二无线输出线圈，以及电子手写笔上的无线接收线圈和无线接收控制模块，构成了第二级无线充电装置，实现了无线键盘对电子手写笔进行无线充电。通过在无线键盘上设置第一充电控制模块和第二电池，第一充电控制模块可以用于控制对第二电池进行充电的电流和电压等，实现电流和电压的稳定；第二电池可以作为电源为无线键盘供电。
无线键盘对电子手写笔进行无线充电时，第一无线接收线圈所接收到的交流电信号直接传递到第二无线输出线圈，实现交流电的直接传输，而无需进行交流转直流、直流转交流的转换过程，节约了进行交流转直流和直流转交流所需的芯片节，约了成本；同时，减小无线充电的链路长度，提高了无线充电的可靠性和效率。
在实现两级无线充电的同时，通过在无线键盘上设置收纳腔，实现了无线键盘对电子手写笔的收纳，提高了整个充电系统的便携性。通过将第二无线输出控制模块和第二无线输出线圈设置在收纳腔内，实现了在收纳电子手写笔的同时，为电子手写笔进行无线充电。
在第一方面的一种可能的设计方式中，第二无线输出线圈和第一无线接收线圈通过匹配电路连接，匹配电路中包括第一电容和第二电容，第一电容与第一无线接收线圈形成谐振电路，第二电容和第二无线输出线圈形成谐振电路。
在此基础上，通过设置匹配电路连接第一无线接收线圈和第二无线输出线圈，实现第一无线接收线圈所接收的交流电信号直接传输到第二无线输出线圈，通过设置第一电容和第二电容，分别与第一无线接收线圈和第二无线输出线圈形成谐振电路，有利于提升传输功率。
在第一方面的一种可能的设计方式中，平板电脑中还设置有第三无线输出线圈，第三无线输出线圈与第一无线输出控制模块连接，第三无线输出线圈用于为吸附在平板电脑上的电子手写笔无线充电。
在此基础上，通过在平板电脑上设置第三无线输出线圈，第三无线输出线圈用于对电子手写笔进行无线充电，实现了平板电脑对电子手写笔直接进行无线充电。
在第一方面的一种可能的设计方式中，平板电脑中还设置有第二无线输出控制模块和第三无线输出线圈，第二无线输出控制模块与第一电池连接，第三无线输出线圈与第二无线输出控制模块连接，第三无线输出线圈用于为吸附在平板电脑上的电子手写笔无线充电。
在此基础上，通过在平板电脑上设置第三无线输出线圈，并独立设置与第三无线输出线圈相连的第二无线输出控制模块，第二无线输出控制模块可以用于检测、控制、传输无线充电能量，使得第三无线输出线圈的工作不受第一无线输出控制模块的影响，从而使得平板电脑可以同时对电子手写笔和无线键盘进行无线充电。
在第一方面的一种可能的设计方式中，平板电脑上设置有稳压控制模块，稳压控制模块与第一电池相连，第一无线输出控制模块和第二无线输出控制模块均与稳压控制模块相连。
在此基础上，通过在平板电脑上设置稳压控制模块，稳压控制模块可以对第一电池输出的电压进行管理控制，实现第一电池在不同的电量下，能够提供稳定的电压。
在第一方面的一种可能的设计方式中，第一无线输出线圈和第一无线输出控制模块之间设置有第一控制开关，第三无线输出线圈和第一无线输出控制模块之间设置有第二控制开关。
在此基础上，通过设置第一控制开关和第二控制开关，可以实现对无线输出线圈和第三无线输出线圈工作状态的控制，使得第一无线输出线圈和第三无线输出线圈均与第一无线输出控制模块相连时，控制其中一侧的无线输出线圈进行工作，避免出现第一无线输出线圈和第三无线输出线圈均与第一无线控制模块相连接，且同时处于工作状态的情况出现。
在第一方面的一种可能的设计方式中，电子手写笔内设置第二无线接收线圈、第二无线接收控制模块、第二充电控制模块和第三电池；
第二无线接收线圈接收第二无线输出线圈发出的电磁信号；
第二无线接收控制模块与第二无线接收线圈连接，第二充电控制模块与第二无线接收控制模块连接，第三电池与第二无线接收控制模块连接。
该设计方式示出了电子手写笔的一种具体设置形式。
在第一方面的一种可能的设计方式中，连接部包括转轴，转轴用于活动连接键盘主体和支架；
其中，转轴的内部中空，且转轴的一端设有开口，形成收纳腔。
该设计方式给出了连接部的一种具体实现方式。
在第一方面的一种可能的设计方式中，连接部包括柔性连接件和收纳部件；
柔性连接件用于弯折以活动连接键盘主体和支架；
收纳部件固定在柔性连接件的弯折区域，收纳部件内部中空，且收纳部件的一端设有开口，形成收纳腔。
该设计方式给出了连接部的另一种具体实现方式。
在第一方面的一种可能的设计方式中，收纳腔内还设置有弹压器件；其中，当电子手写笔收纳在收纳腔内时，弹压器件与电子手写笔的第二端接触。弹压器件，用于响应于用户对收纳在收纳腔内的电子手写笔的第一端的按压操作，将电子手写笔由第二端向第一端的方向弹出收纳腔。其中，第一端是电子手写笔收纳在收纳腔内时，位于开口的一端，第二端与第一端相对。
在此基础上，通过在收纳腔内设置弹压器件，弹压器件在受压后可以对电子手写笔施加一定的弹力，有利于将电子手写笔从收纳腔中取出。
第二方面，本申请提供一种计算机可读存储介质，包括计算机指令。当该计算机指令在无线充电系统上运行时，使得无线充电系统执行如第一方面及其任一种可能的设计方式所述的无线充电系统的各项功能。
第三方面，本申请提供一种计算机程序产品，当计算机程序产品在计算机上运行 时，使得计算机执行如第一方面及其任一种可能的设计方式所述的无线充电系统的各项功能。
可以理解地，上述提供的第二方面所述的计算机可读存储介质，第三方面所述的计算机程序产品所能达到的有益效果，可参考如第一方面及其任一种可能的设计方式中的有益效果，此处不再赘述。
附图说明
图1为本申请实施例提供的一种无线充电系统的产品形态示意图；
图2为本申请实施例提供的一种电子手写笔的产品形态示意图；
图3为图1所示的无线充电系统收纳了图2所示的电子手写笔后的仰视图；
图4为图1所示的无线充电系统收纳了图2所示的电子手写笔后的左视图；
图5为本申请实施例提供的一种无线充电系统的系统架构示意图；
图6为本申请实施例提供的另一种无线充电系统的系统架构示意图；
图7为本申请实施例提供的再一种无线充电系统的系统架构示意图；
图8为本申请实施例提供的一种无线充电系统中平板电脑的硬件结构示意图；
图9为本申请实施例提供的一种无线充电系统中无线键盘的硬件结构示意图；
图10为本申请实施例提供的另一种无线充电系统的产品形态示意图；
图11为本申请实施例提供的另一种无线充电系统的产品形态示意图；
图12为本申请实施例提供的另一种无线充电系统的产品形态示意图；
图13为本申请实施例提供的一种无线充电系统中无线键盘的产品形态示意图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
在本申请实施例中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本申请实施例中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
在本申请的实施例中，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。
应理解，在本文中对各种所述示例的描述中所使用的术语只是为了描述特定示例，而并非旨在进行限制。如在对各种所述示例的描述中所使用的那样，单数形式“一个(“a”，“an”)”和“该”旨在也包括复数形式，除非上下文另外明确地指示。
本申请中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a,b,或c中的至少一项(个)，可以表示：a,b,c,a-b,a-c,b-c,或a-b-c，其中a,b,c可以是单个，也可以是多个。
还应理解，本文中所使用的术语“和/或”是指并且涵盖相关联的所列出的项目中的一个或多个项目的任何和全部可能的组合。术语“和/或”，是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本申请中的字符“/”，一般表示前后关联对象 是一种“或”的关系。
还应理解，在本申请中，除非另有明确的规定和限定，术语“连接”应做广义理解，例如，“连接”可以是固定连接，也可以是滑动连接，还可以是可拆卸连接，或成一体等；可以是直接相连，也可以通过中间媒介间接相连。
还应理解，术语“包括”(也称“includes”、“including”、“comprises”和/或“comprising”)当在本说明书中使用时指定存在所陈述的特征、整数、步骤、操作、元素、和/或部件，但是并不排除存在或添加一个或多个其他特征、整数、步骤、操作、元素、部件、和/或其分组。
应理解，说明书通篇中提到的“一实施例”、“另一实施例”、“一种可能的设计方式”意味着与实施例或实现方式有关的特定特征、结构或特性包括在本申请的至少一个实施例中。因此，在整个说明书各处出现的“在本申请一实施例中”或“在本申请另一实施例中”、“一种可能的设计方式”未必一定指相同的实施例。此外，这些特定的特征、结构或特性可以任意适合的方式结合在一个或多个实施例中。
为了解决现有技术中平板电脑、无线键盘和电子手写笔作为一个配套的系统，在进行无线充电时收纳不够方便、无线充电链路较长、成本高的问题，本申请实施例提供一种无线充电系统，可以在收纳电子手写笔的同时，为电子手写笔进行无线充电的功能，实现了收纳和无线充电一体化，具备良好的便捷性。下面结合图1至图13对本申请实施例进行说明。
参考图1，图1为本申请实施例提供的一种无线充电系统的产品形态示意图。如图1所示，该无线充电系统包括平板电脑100和无线键盘200，无线键盘200包括：键盘主体A和用于放置无线键盘200的支架B。其中，键盘主体A和支架B通过连接部C进行连接，连接部C可以为柔性材料或者转轴等，使得键盘主体A和支架B可以相对转动。平板电脑100放置或者套设在支架B上，与无线键盘200中的键盘主体形成一定的夹角。
如图1所示，在该无线充电系统中的无线键盘200的连接部C上设置有收纳腔201，该收纳腔201的一端设有开口202。图2所示的电子手写笔300可以通过开口202放置于图1所示的收纳腔201内。无线充电系统收纳电子手写笔300后的形态如下：
参考图3和图4，图3示出无线键盘200的键盘主体A和支架B合并，且电子手写笔300经由开口202插入收纳腔201后，无线充电系统的仰视图。图4示出平板电脑100放置于支架B内，且无线键盘200的键盘主体A和支架B合并，且电子手写笔300经由开口202插入收纳腔201后，无线充电系统的左视图。
本申请实施例中的平板电脑100可以对无线键盘200进行无线充电，在平板电脑100内设置有在充电过程中会发出电磁信号无线充电线圈，在无线键盘200上对应设置有接收电磁信号的无线充电线圈，无线键盘200的无线充电线圈可以与平板电脑100的无线充电线圈耦合，平板电脑100可以通过无线充电线圈向无线键盘200发射无线充电信号，为无线键盘200无线充电。
本申请实施例中的无线键盘200可以对电子手写笔300进行无线充电，具体地，可以是在无线键盘200的收纳腔201内设置有可以产生电磁信号的无线充电线圈。在电子手写笔300被收纳至无线键盘200的收纳腔201后，无线键盘200便可以通过收 纳腔201内设置的无线充电线圈为电子手写笔300进行无线充电。当然，上述电子手写笔300的笔身上也设置有无线充电线圈，该无线充电线圈可以接收收纳腔201内发出的电磁信号。如此，无线键盘200的无线充电线圈可以与电子手写笔300的无线充电线圈实现耦合，无线键盘200通过耦合的无线充电线圈向电子手写笔300发射无线充电信号，为电子手写笔300进行无线充电。
此外，平板电脑100还可以直接对电子手写笔300进行无线充电(图中未示出)，具体地，可以将电子手写笔300吸附在平板电脑100上，平板电脑100上设置有为电子手写笔300产生电磁信号的无线充电线圈，电子手写笔300的吸附位置靠近该无线充电线圈，且电子手写笔300的笔身上设置有可以接收平板电脑100所发出的电磁信号的无线充电线圈。如此，平板电脑100的无线充电线圈可以与电子手写笔300的无线充电线圈实现耦合，平板电脑100通过耦合的无线充电线圈向电子手写笔300发射无线充电信号，为电子手写笔300进行无线充电。
本申请实施例中，平板电脑100通过无线线圈对无线键盘200或者电子手写笔300进行无线充电的功能称为“正向无线充电功能”，无线键盘200通过无线充电线圈为电子手写笔300进行无线充电的功能称为“反向无线充电功能”。
为了便于理解，本申请实施例结合附图，介绍上述平板电脑100对无线键盘200进行无线充电以及无线键盘200对电子手写笔300进行无线充电的原理进行说明。
请参考图5，其示出本申请实施例提供的一种无线充电系统的系统架构示意图。该无线充电系统包括平板电脑100、无线键盘200和电子手写笔300。
如图5所示，平板电脑100包括：第一电池110、第一无线输出控制模块130和第一无线输出线圈140，第一无线输出控制模块130与第一电池110电连接，第一无线输出线圈140与第一无线输出控制模块130电连接，在第一无线输出线圈140附件设置有电容，使得该电容与第一无线输出线圈140形成谐振电路。
无线键盘200包括：第二电池210、第一充电控制模块220、第一无线接收控制模块230、第一无线接收线圈240和第二无线输出线圈250。其中，第二电池210与第一充电控制模块220电连接，第一充电控制模块220与第一无线接收控制模块230电连接，第一无线接收控制模块230与第一无线接收线圈240电连接。第二无线输出线圈250与第一无线接收线圈240电连接，本申请实施例中，第二无线输出线圈250可以通过匹配电路与第一无线接收线圈240进行连接。其中，在第一无线接收线圈240与第二无线输出线圈250所形成的回路(匹配电路)中，设置有第一电容和第二电容，第一电容靠近第一无线接收线圈240设置，第一电容的值以及第一电容与第一无线接收线圈240之间的距离，可以根据第一无线接收线圈240的电感值进行配套设置，使得第一电容与第一无线接收线圈240形成谐振或者准谐振电路，以提升传输功率。第二电容靠近第二无线输出线圈250设置，第二电容的值以及第二电容与第二无线输出线圈250之间的距离，可以根据第二无线输出线圈250的电感值进行配套设置，第二电容与第二无线输出线圈250形成谐振或者准谐振，以提升传输功率。此外，匹配电路中还可以设置开关等器件。
本申请实施例中，第二无线输出线圈250通过匹配电路直接连接第一无线接收线圈240。第一无线接收线圈240接收到第一无线输出线圈140的交流信号后，直接将 该交流信号通过匹配电路传递到第二无线输出线圈250。
现有技术方案中，第一无线接收线圈240接收到第一无线输出线圈140的交流信号后，需要通过在无线键盘200内设置一个RX芯片，该RX芯片用于将第一无线接收线圈240接收到的交流信号转换为直流信号，并设置一个TX芯片，该TX芯片用于将上述的直流信号再转换为交流信号，传递给第二无线输出线圈250。
本申请实施例中，通过设置电感值合适的第一无线接收线圈240，并在其附近配套设置第一电容，形成谐振电路，以及设置电感值合适的第二无线输出线圈250，并在其附件配套设置第二电容，形成谐振电路。第一无线接收线圈240和第二无线输出线圈250之间设置匹配电路，实现交流信号的直接传递，而无需进行交流转直流、直流转交流的转换过程，该过程中节约了进行交流转直流和直流转交流所需的RX芯片和TX芯片，并且减小无线充电的链路长度，提高了无线充电的可靠性和效率，减少了无线键盘200的成本。
本申请实施例中，平板电脑100对无线键盘200的充电过程为：平板电脑100中的第一电池110可以输出直流电压到第一无线输出控制模块130，第一无线输出控制模块130将直流电转换为交流电输出到第一无线接收线圈240。无线键盘200中的第二无线输出线圈250接收第一无线接收线圈240发射的交流电信号，并传输到第一无线接收控制模块230，第一无线接收控制模块230可以将接收到的交流电转换为直流电，然后将该直流电输送到第一充电控制模块220中，实现对第二电池210进行充电。
电子手写笔300包括：第三电池310、第二充电控制模块320、第二无线接收控制模块330和第二无线接受线圈340。第三电池310与第二充电控制模块320电连接，第二充电控制模块320和第二无线接收控制模块330电连接，第二无线接收控制模块330和第二无线接受线圈340电连接，在第二无线接受线圈340附件设置有电容，使得该电容与第二无线接受线圈340形成谐振电路。
上述第一无线输出控制模块130可以是平板电脑100的TX芯片；上述第一充电控制模块220可以是无线键盘200的键盘charger(充电器)，上述第一无线接收控制模块230可以是无线键盘200的RX芯片；上述第二充电控制模块320可以是电子手写笔300的笔charger，上述第二无线接收控制模块330可以是电子手写笔300的RX芯片。
在平板电脑100对无线键盘200进行无线充电的过程中，平板电脑100的第一电池110可以作为电源进行供电，平板电脑100上的第一无线输出控制模块130可以接收第一电池110输入的直流电信号。第一无线输出控制模块130将其接收到的直流电信号转换为交流电信号，然后将该交流电信号输入给第一无线输出线圈140，第一无线输出线圈140响应于该交流电信号，产生交变电磁场。
无线键盘200上的第一无线接收线圈240与平板电脑100上的第一无线输出线圈140耦合。第一无线接收线圈240感应第一无线输出线圈140发出的交变电磁场，可以产生交流电信号，然后将该交流电信号发给第一无线接收控制模块230，第一无线接收控制模块230可以将该交流电信号整流成直流电信号，然后将该直流电信号输入给第一充电控制模块220，第一充电控制模块220可以对该直流电信号进行管理，例如，对输入的电流和电压进行管理，然后将该直流电信号输入给第二电池210，实现 对第二电池210进行充电，第二电池210可以作为无线键盘200的电源。
第一无线接收线圈240感应第一无线输出线圈140发出的交变电磁场，可以产生交流电信号，并可以将一部分该交流信号通过匹配电路直接输入到第二无线输出线圈250，第二无线输出线圈250响应于该交流信号，可以产生交变磁场。
电子手写笔300上的第二无线接收线圈340与无线键盘200上的第二无线输出线圈250耦合。在电子手写笔300被收纳进无线键盘200上的收纳腔201，且收纳腔201内的第二无线输出线圈250产生交变磁场后，电子手写笔300笔身上的第二无线接收线圈340开始工作。第二无线接收线圈340感应到第二无线输出线圈250所发出的交变电磁场，可以产生交流电信号，并将该交流电信号输入给第二无线接收控制模块330，第二无线接收控制模块330将接收到的该交流电信号整流成直流电信号，然后向第二充电控制模块320输入该直流电信号，第二充电控制模块320对该直流电信号进行处理后，输入给第三电池310，实现对第三电池310进行充电。
其中，上述第一无线输出控制模块130、第一无线接收控制模块230、第二无线接收控制模块330以及第一无线接收线圈240与第二无线输出线圈250之间的连接电路可以包括匹配电路。该匹配电路可以包括电容组合、开关等。
第一无线输出控制模块130中的匹配电路用于与第一无线输出线圈140形成LC谐振，以提升第一无线输出线圈140的发射效率。第一无线接收控制模块230中的匹配电路用于与第一无线接收线圈240形成LC谐振，以提升第一无线接收线圈240的接收效率。第一无线接收线圈240与第二无线输出线圈250之间的匹配电路，可以用于与第一无线接收线圈240形成LC谐振，以提升第一无线接收线圈240的接收效率，也可以用于与第二无线输出线圈250形成LC谐振，以提升第二无线输出线圈250的发射效率，可以参照上述内容中对第一电容和第二电容的描述。第二无线接收控制模块330中的匹配电路用于与第二无线接收线圈340形成LC谐振，以提升第二无线接收线圈340的接收效率。
在本申请一实施例中，平板电脑100还包括第三无线输出线圈150，第三无线输出线圈150与第一无线输出控制模块130电连接。请参考图6，图6示出了本申请实施例提供的另一种无线充电系统的系统架构示意图。
如图6所示，平板电脑100上设置的第三无线输出线圈150可以用于为电子手写笔300进行充电，具体地，可以将电子手写笔300吸附在平板电脑100上，或者放置在平板电脑100上，使其靠近平板电脑100上的第三无线输出线圈150。在平板电脑100对电子手写笔300进行无线充电的过程中，平板电脑100的第一电池110可以作为电源对第一无线输出控制模块130进行供电，第一无线输出控制模块130接收第一电池110输入的直流电信号，然后将其接收到的直流电信号转换为交流电信号。由于第三无线输出线圈150与第一无线输出控制模块130电连接，第一无线输出控制模块130可以将该交流电信号输入给第三无线输出线圈150，第三无线输出线圈150响应于该交流电信号，产生交变电磁场。
电子手写笔300上的第二无线接收线圈340可以与平板电脑100上的第三无线输出线圈150耦合。在电子手写笔300吸附在平板电脑100上的第三无线输出线圈150附近时，第二无线接收线圈340感应到第三无线输出线圈150所发出的交变电磁场， 可以产生交流电信号，并将该交流电信号输入给第二无线接收控制模块330，第二无线接收控制模块330将接收到的该交流电信号整流成直流电信号，然后向第二充电控制模块320输入该直流电信号，第二充电控制模块320对该直流电信号进行处理后，输入给第三电池310，实现对第三电池310进行充电。
需要说明的是，由于在本申请实施例中，第一无线输出线圈140和第三无线输出线圈150均与第一无线输出控制模块130电连接，即第一无线输出控制模块130对第一无线输出线圈140和第三无线输出线圈150无线充电能量均进行控制。为了保证第一无线输出线圈140和第三无线输出线圈150在进行无线充电时具有足够的电压和电流，平板电脑100在对外进行正向无线充电时，一般只有一个无线充电线圈工作。
在本申请一实施例中，在第一无线输出线圈140和第一无线输出控制模块130之间设置有第一控制开关160，第三无线输出线圈和第一无线输出控制模块130之间设置有第二控制开关170。可以通过控制第一控制开关160和第二控制开关170的状态，对第一无线输出线圈140和第三无线输出线圈的工作状态进行调整。
例如：可以闭合第一控制开关160，断开第二控制开关170，此时，平板电脑100处于只对无线键盘200进行无线充电的状态，即第一无线充电线圈处于工作状态，第三无线输出线圈150处于停止工作状态，可以为第一无线充电线圈140提供平稳的电流、电压和充足的能量。还可以闭合第二控制开关170，断开第一控制开关160，此时，平板电脑100处于只对电子手写笔300进行无线充电，即第三无线充电线圈150处于工作状态，第一无线充电线圈140处于停止工作状态，可以为第三无线充电线圈150提供平稳的电流、电压和充足的能量。
由于第一无线输出控制模块130一般是集成在平板电脑100的TX芯片上，因此，采用上述设置，可以在平板电脑100上只设置一个TX芯片，对第一无线输出线圈140和第三无线输出线圈150进行控制，可以节约成本。
在本申请一实施例中，平板电脑100还包括第二无线输出控制模块180和第三无线输出线圈150，第三无线输出线圈150与第二无线输出控制模块180电连接，第二无线输出控制模块180与第一电池110电连接。请参考图7，图7示出了本申请实施例提供的再一种无线充电系统的系统架构示意图。
如图7所示，在平板电脑100对电子手写笔300进行无线充电的过程中，平板电脑100的第一电池110可以作为电源对第二无线输出控制模块180进行供电，第二无线输出控制模块180接收第一电池110输入的直流电信号，然后将其接收到的直流电信号转换为交流电信号。由于第三无线输出线圈150与第二无线输出控制模块180电连接，第二无线输出控制模块180可以将该交流电信号输入给第三无线输出线圈150，第三无线输出线圈150响应于该交流电信号，产生交变电磁场。电子手写笔300与第三无线输出线圈150之间的交互请参照前述实施例中的描述，在此不作赘述。
需要说明的是，本申请实施例中，平板电脑100可以直接对电子手写笔300进行充电。平板电脑100也可以对无线键盘200进行无线充电，在对无线键盘200进行充电的同时，无线键盘200可以对电子手写笔300进行充电。其中，无线键盘200在对电子手写笔300的充电过程中，可以将其通过第一无线接收线圈240接收到的交流电信号直接通过第二无线接收线圈250发送给电子手写笔300，无需进行交流-直流和直 流-交流的转换。由于无线键盘200为电子手写笔300的无线充电链路中未设置直流电信号转交流电信号的相应模块，例如TX芯片，因此无线键盘200中的第二电池210无法用于为电子手写笔300进行充电。无线键盘200在为电子手写笔300进行无线充电的过程中，需要有相应的设备(例如平板电脑100)为无线键盘200进行无线充电。
第二无线输出控制模块180可以是平板电脑100的TX芯片，本申请实施例中相当于设置了两个TX芯片分别对第一无线输出线圈140和第三无线输出线圈150进行控制，两个TX芯片可以分别对输入第一无线输出线圈140和第三无线输出线圈150的电流和电压等指标进行独立控制，使得第一无线输出线圈140和第三无线输出线圈150可以同时工作，即当电子手写笔300吸附在平板电脑100上时，平板电脑100可以同时对电子手写笔300和无线键盘200进行无线充电。
在本申请一实施例中，如图7所示，平板电脑100还包括稳压控制模块120，稳压控制模块120串联于第一电池110和第一无线输出控制模块130之间，若平板电脑100中设置有第二无线输出控制模块180时，稳压控制模块120还同时串联于第一电池110和第二无线输出控制模块180之间。稳压控制模块120可以是BOOST芯片或者BUCK-BOOST芯片等，稳压控制模块120的主要功能是：在电池处于不同电量的情况下，为第一无线输出控制模块130和/或第二无线输出控制模块180提供稳定的电压。
上述的电连接包括直接电连接和间接电连接，例如，第二无线输出控制模块180或者第一无线输出控制模块130可以与第一电池110直接电连接，第二无线输出控制模块180或者第一无线输出控制模块130也可以与稳压控制模块120直接连接，由于稳压控制模块120与第一电池110直接连接，因此第二无线输出控制模块180或者第一无线输出控制模块130相当于与第一电池110间接电连接。
需要说明的是，图5、图6和图7仅示出了无线充电系统的部分可能的充电电路结构示意图。本申请实施例中无线充电系统的充电电路结构包括但不限于图5至图7所示的结构。例如，无线键盘200还可以包括处理器，该处理器连接第一无线接收控制模块230、第一充电控制模块220和第二无线输出控制模块260。该处理器用于检测第一无线接收控制模块230是否有电流输入。该处理器还用于控制第一充电控制模块220工作，实现对无线键盘200的正向无线充电功能。
请参考图8，图8为本申请实施例提供的一种无线充电系统中平板电脑100的结构示意图。如图8所示，该无线键盘200可以包括无线通信模块500、处理器510，存储器520，传感器530，显示屏540，充电接口550，充电管理模块560，第一无线充电线圈570、第三无线充电线圈580，电池590等。
可以理解的是，本实施例示意的结构并不构成对无线键盘200的具体限定。在另一些实施例中，无线键盘200可以包括比图示更多或更少的部件，或者组合某些部件，或者拆分某些部件，或者不同的部件布置。图示的部件可以以硬件，软件或软件和硬件的组合实现。
其中，存储器520可以用于存储程序代码，如用于为无线键盘200和/或电子手写笔300进行无线充电的程序代码等。存储器520中还可以存储有用于唯一标识平板电脑100的蓝牙地址。另外，该存储器520中还可以存储有与平板电脑100之前成功配 对过的电子设备的连接数据。例如，该连接数据可以为与该平板电脑100成功配对过的电子设备的蓝牙地址。基于该连接数据，平板电脑100能够与该电子设备自动配对，而不必配置与其之间的连接，如进行合法性验证等。上述蓝牙地址可以为媒体访问控制(media access control，MAC)地址。
处理器510可以用于执行上述应用程序代码，调用相关模块以实现本申请实施例中平板电脑100的功能。例如，实现平板电脑100正向无线充电功能，无线通信功能等。处理器510可以包括一个或多个处理单元，不同的处理单元可以是独立的器件，也可以集成在一个或多个处理器510中。处理器510具体可以是集成的控制芯片，也可以由包括各种有源和/或无源部件的电路组成，且该电路被配置为执行本申请实施例描述的属于处理器510的功能。其中，平板电脑100的处理器可以是微处理器。
无线通信模块500可以用于支持平板电脑100与其他电子设备之间包括蓝牙(bluetooth，BT)，全球导航卫星系统(global navigation satellite system，GNSS)，无线局域网(wireless local area networks，WLAN)(如无线保真(wireless fidelity，Wi-Fi)网络)，调频(frequency modulation，FM)，近距离无线通信技术(near field communication，NFC)，红外技术(infrared，IR)等无线通信的数据交换。
在一些实施例中，该无线通信模块500可以为蓝牙芯片。平板电脑100可以通过该蓝牙芯片与其他电子设备的蓝牙芯片之间进行配对并建立无线连接，以通过该无线连接实现平板电脑100和其他电子设备之间的无线通信。
另外，无线通信模块500还可以包括天线，无线通信模块500经由天线接收电磁波，将电磁波信号调频以及滤波处理，将处理后的信号发送到处理器510。无线通信模块500还可以从处理器510接收待发送的信号，对其进行调频，放大，经天线转为电磁波辐射出去。
在一些实施例中，平板电脑100可以支持有线充电。具体的，充电管理模块560可以通过充电接口550接收有线充电器的充电输入，为电池590充电。
在另一些实施例中，平板电脑100可以支持对无线键盘200和/或电子手写笔300进行无线充电的功能。充电管理模块560可以对第一无线充电线圈570和/或第三无线充电线圈580进行电信号输入。具体的，第一无线充电线圈570和第三无线充电线圈580与充电管理模块560分别通过匹配电路连接。第一无线充电线圈570和/或第三无线充电线圈580可以响应于充电管理模块560输入的交流电信号，产生交变电磁场，为无线键盘200和/或电子手写笔300进行无线充电。
其中，充电管理模块560管理对外进行无线充电的同时，还可以为平板电脑100供电。充电管理模块560接收电池590的输入，为处理器510，存储器520，传感器530，外部存储器和无线通信模块500等供电。充电管理模块560还可以用于监测电池590的电池容量，电池循环次数，电池健康状态(漏电，阻抗)等参数。在其他一些实施例中，充电管理模块560也可以设置于处理器510中。
上述显示屏540中可以集成有触摸传感器。平板电脑100可以通过显示屏540接收用户对平板电脑100的控制命令。
可以理解的是，本申请实施例示意的结构并不构成对平板电脑100的具体限定。其可以具有比图8示出的更多的或者更少的部件，可以组合两个或更多的部件，或者 可以具有不同的部件配置。例如，在平板电脑100的外表面还可以包括按键、指示灯(可以指示电量、呼入/呼出、配对模式等状态)、显示屏(可以提示用户相关信息)等部件。其中，该按键可以是物理按键或触摸按键(与触摸传感器配合使用)等，用于触发开机、关机、开始充电、停止充电等操作。
请参考图9，图9为本申请实施例提供的一种无线充电系统中无线键盘200的结构示意图。如图9所示，该无线键盘200可以包括处理器610，存储器620，无线充电接收模块630，充电管理模块640，第二无线充电线圈650，电池660，无线通信模块670，触控板680，键盘690等。
其中，上述处理器610，存储器620，无线充电接收模块630，充电管理模块640，电池660，无线通信模块670，触控板680，键盘690等均可以设置在无线键盘200的键盘主体(如图1所示的键盘主体A)上。上述无线充电线圈650可以设置在用于活动连接键盘主体和支架的连接部(如图1所示的连接部C)中。
可以理解的是，本实施例示意的结构并不构成对无线键盘200的具体限定。在另一些实施例中，无线键盘200可以包括比图示更多或更少的部件，或者组合某些部件，或者拆分某些部件，或者不同的部件布置。图示的部件可以以硬件，软件或软件和硬件的组合实现。
其中，存储器620可以用于存储程序代码，如用于为电子手写笔300无线充电的程序代码等。存储器620中还可以存储有用于唯一标识无线键盘200的蓝牙地址。另外，该存储器620中还可以存储有与无线键盘200之前成功配对过的电子设备的连接数据。例如，该连接数据可以为与该无线键盘200成功配对过的电子设备的蓝牙地址。基于该连接数据，无线键盘200能够与该电子设备自动配对，而不必配置与其之间的连接，如进行合法性验证等。上述蓝牙地址可以为媒体访问控制(media access control，MAC)地址。
处理器610可以用于执行上述应用程序代码，调用相关模块以实现本申请实施例中无线键盘200100的功能。例如，实现无线键盘200正向无线充电功能，反向无线充电功能，无线通信功能等。处理器610可以包括一个或多个处理单元，不同的处理单元可以是独立的器件，也可以集成在一个或多个处理器610中。处理器610具体可以是集成的控制芯片，也可以由包括各种有源和/或无源部件的电路组成，且该电路被配置为执行本申请实施例描述的属于处理器610的功能。其中，无线键盘200的处理器可以是微处理器。
无线通信模块670可以用于支持无线键盘200与其他电子设备之间包括蓝牙(bluetooth，BT)，全球导航卫星系统(global navigation satellite system，GNSS)，无线局域网(wireless local area networks，WLAN)(如无线保真(wireless fidelity，Wi-Fi)网络)，调频(frequency modulation，FM)，近距离无线通信技术(near field communication，NFC)，红外技术(infrared，IR)等无线通信的数据交换。
在一些实施例中，该无线通信模块670可以为蓝牙芯片。该无线键盘200可以是蓝牙键盘。无线键盘200可以通过该蓝牙芯片与其他电子设备的蓝牙芯片之间进行配对并建立无线连接，以通过该无线连接实现无线键盘200和其他电子设备之间的无线通信。
另外，无线通信模块670还可以包括天线，无线通信模块670经由天线接收电磁波，将电磁波信号调频以及滤波处理，将处理后的信号发送到处理器610。无线通信模块670还可以从处理器610接收待发送的信号，对其进行调频，放大，经天线转为电磁波辐射出去。
在一些实施例中，无线键盘200可以支持正向无线充电。充电管理模块640可以通过无线键盘200的第二无线充电线圈650接收无线充电输入。具体的，充电管理模块640与无线充电线圈650通过匹配电路连接。第二无线充电线圈650可以与上述平板电脑100的第一无线充电线圈570耦合，感应平板电脑100的第一无线充电线圈570发出的交变电磁场，产生交变电信号。第二无线充电线圈650产生的交变电信号经过匹配电路传输至充电管理模块640，以便为电池660无线充电。
其中，充电管理模块640为电池660充电的同时，还可以为无线键盘200供电。充电管理模块640接收电池660的输入，为处理器610，存储器620，外部存储器和无线通信模块670等供电。充电管理模块640还可以用于监测电池660的电池容量，电池循环次数，电池健康状态(漏电，阻抗)等参数。在其他一些实施例中，充电管理模块640也可以设置于处理器610中。
需要说明的是，上述匹配电路可以集成在充电管理模块640中，该匹配电路也可以独立于充电管理模块640，本申请实施例对此不作限制。图9以匹配电路可以集成在充电管理模块640中为例，示出无线键盘200的硬件结构示意图。
应注意，无线充电接收模块630可以是集成了图5至图7中所示的第一无线接收线圈240和第一无线接收控制模块230的所有功能。无线键盘200的无线充电接收模块630可以通过无线充电装置连接平板电脑100等电子设备，由平板电脑100等电子设备为无线键盘200供电。
应注意，在图9所示的无线键盘200是图5、图6或图7所示的无线键盘200的情况下，图9所示的充电管理模块包括图5、图6或图7所示的第一充电控制模块220的所有功能。
其中，无线键盘200进行正向无线充电的详细描述，可以参考上述实例中无线键盘200的正向无线充电的原理的介绍，本申请实施例这里不予赘述。
上述触控板680中集成有触摸传感器。笔记本电脑可以通过触控板680和键盘690接收用户对笔记本电脑的控制命令。
可以理解的是，本申请实施例示意的结构并不构成对无线键盘200的具体限定。其可以具有比图9示出的更多的或者更少的部件，可以组合两个或更多的部件，或者可以具有不同的部件配置。例如，上述无线键盘200的壳体上还可以设置有用于收纳电子手写笔300的收纳腔201。上述第二无线充电线圈650设置于上述收纳腔201内，用于当电子手写笔300收纳于上述收纳腔201内后，为该电子手写笔300无线充电。
又例如，在无线键盘200的外表面还可以包括按键、指示灯(可以指示电量、呼入/呼出、配对模式等状态)、显示屏(可以提示用户相关信息)等部件。其中，该按键可以是物理按键或触摸按键(与触摸传感器配合使用)等，用于触发开机、关机、开始充电、停止充电等操作。
以下实施例中提供的无线键盘200的均可以包括上述硬件结构。下面详细介绍本 申请实施例提供的无线键盘200。
本申请实施例提供一种无线键盘200。如图1、图3或图4所示，该无线键盘200包括：键盘主体A、用于放置平板电脑100的支架B，以及用于活动连接键盘主体A和支架B的连接部C。
其中，连接部C包括一端设有开口202的收纳腔201。该收纳腔201用于经由开口202收纳图2所示的电子手写笔300。
在一些实施例中，如图1所示，上述连接部C可以包括柔性连接件C 1和收纳部件C 2。如图1所示，柔性连接件C 1用于弯折以活动连接键盘主体A和支架B。例如，该柔性连接件C 1可以是柔性可折叠材料。
如图1所示，收纳部件C 2固定在柔性连接件C 1的弯折区域。该收纳部件C 2内部中空，且收纳部件C 1的一端设有开口202，可形成收纳腔201。该收纳部件C 2的内壁(即收纳腔201)的形状与电子手写笔300的笔身的形状类似。例如，该收纳部件C 2的内壁可以是圆柱体或者多棱柱体等任一种形状。该收纳部件C 2可以是塑料材质。
示例性的，图10为无线键盘200的键盘主体A和支架B合并，且电子手写笔300未插入收纳腔201之前，无线键盘200的立体图。图11为图10所示的无线键盘200的键盘主体A和支架B合并，且电子手写笔300经由开口202还未完全插入收纳腔201时，无线键盘200的立体图。图12为图10所示的无线键盘200100的键盘主体A和支架B合并，且电子手写笔300经由开口202插入收纳腔201后，无线键盘200的立体图。
在另一些实施例中，参考图13，图13示出了一种无线充电系统中无线键盘的产品形态示意图，上述连接部C包括转轴C 3用于活动连接键盘主体A和支架B。如图13所示，转轴C 3的内部中空，且转轴C 3的一端设有开口202，可形成收纳腔201。
上述任一实施例所述的上述收纳腔201内设置有第二无线输出线圈250，该键盘主体A还包括第一无线接收线圈240。如图5至图7所示，第二无线输出线圈250连接第一无线接收线圈240。第一无线接收线圈240接收到第一无线输出线圈140的交流信号后，直接将该交流信号通过匹配电路传递到第二无线输出线圈250。
现有技术方案中，第一无线接收线圈240接收到第一无线输出线圈140的交流信号后，需要通过在无线键盘200内设置一个RX芯片，该RX芯片用于将第一无线接收线圈240接收到的交流信号转换为直流信号，并设置一个TX芯片，将上述的直流信号再转换为交流信号，传递给第二无线输出线圈250。
本申请实施例中，通过设置电感值合适的第一无线接收线圈240，并在其附近配套设置第一电容，形成谐振电路，以及设置电感值合适的第二无线输出线圈250，并在其附件配套设置第二电容，形成谐振电路。第一无线接收线圈240和第二无线输出线圈250之间设置匹配电路，实现交流信号的直接传递，减少了RX芯片和TX芯片的使用，并且减小无线充电的链路长度，提高了无线充电的可靠性和效率，减少了无线键盘200的成本。
上述第一无线接收控制模块230，用于将第一无线接收线圈240所产生的交流电信号整流成直流电信号，并进行控制处理，然后将该直流电信号传递给第二电池210。
上述第二无线输出线圈250，用于响应于交流电信号产生交变电磁场，为收纳在 收纳腔201内的电子手写笔300进行无线充电。
综上所述，本申请实施例提供的无线键盘200不仅具有电子手写笔300的收纳功能，还可以为电子手写笔300无线充电，同时减小无线充电的链路长度，提高了无线充电的可靠性和效率，减少了成本。
在该实施例中，第二无线输出控制模块260可以在检测到电子手写笔300收纳至收纳腔201内(即入盒)，通过第一充电控制模块220接收来自第二电池210的直流电信号，并将该直流电信号转换为交流电信号。如此，第二无线输出线圈250便可以响应于该交流电信号产生交变电磁场，为收纳在收纳腔201内的电子手写笔300进行无线充电。
当然，第二无线输出控制模块260也可以在检测到电子手写笔300从收纳腔201被取出(即出盒)时，停止接收来自第二电池210的直流电信号。或者，可以由无线键盘200的处理器对电子手写笔300进行出盒和入盒检测，然后将检测结果通知给第二无线输出控制模块260；或者，由处理器根据检测结果指示第二无线输出控制模块260执行相应的事件。
本申请实施例中，电子手写笔300收纳至收纳腔201内(电子手写笔300的入盒)和电子手写笔300从收纳腔201被取出(电子手写笔300的出盒)的检测方法可以参考常规技术中的出盒和入盒检测方法，如常规技术中TWS耳机的出盒和入盒检测方法；本申请实施例这里不予赘述。
在该实施例中，无线键盘200对电子手写笔300进行充电时，需要有相应的设备(例如平板电脑100)对无线键盘200进行无线充电。无线键盘200中的第二电池210可以储存一定的电量用于为无线键盘200供电，但是第二电池210所储存的电无法用于为电子手写笔300进行反向充电。
可以理解，如果由第二电池210提供用于进行电芯预热的能量源；那么，在为第二电池210充电之前，则会先消耗第二电池210的电量。第二电池210的充放电次数越多，对第二电池210的损耗越大，影响第二电池210的使用寿命。
并且，在第一无线接收控制模块230输入直流电信号的情况下，该直流电信号是可以为第二电池210充电的。如此，为第二电池210充电的过程中，则可能会出现第二电池210的电量先减少再增多的现象，容易造成用户不必要的误解，使用户误以为第二电池210故障。
综上所述，本申请实施例中，由第一无线接收控制模块230输入的直流电信号提供用于进行电芯预热的能量源，可以避免用户误以为第二电池210故障，还可以减少对第二电池210不必要的损耗，延长第二电池210的使用寿命。
在另一些实施例中，上述收纳腔201内还设置有弹压器件。当电子手写笔300收纳在收纳腔201内时，该弹压器件与电子手写笔300的第二端302接触。如图2所示，电子手写笔300的第一端301是电子手写笔300收纳在收纳腔201内时，位于开口202的一端；第二端302为与第一端301相对的一端。
该弹压器件，用于响应于用户对收纳在收纳腔201内的电子手写笔300的第一端301的按压操作，将电子手写笔300由第二端302向第一端301的方向弹出收纳腔201。上述弹压器件有助于用户将电子手写笔300从无线键盘200的收纳腔201中取出。
本申请实施例还提供一种计算机存储介质，该计算机存储介质包括计算机指令，当所述计算机指令在上述无线键盘200上运行时，使得该无线键盘200执行上述实施例中无线充电系统所执行的各个功能或者步骤。
本申请实施例还提供一种计算机程序产品，当所述计算机程序产品在计算机上运行时，使得所述计算机执行上述实施例中无线充电系统所执行的各个功能或者步骤。
通过以上实施方式的描述，所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，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，所述模块或单元的划分，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装置，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一个物理单元或多个物理单元，即可以位于一个地方，或者也可以分布到多个不同地方。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。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个可读取存储介质中。基于这样的理解，本申请实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该软件产品存储在一个存储介质中，包括若干指令用以使得一个设备(可以是单片机，芯片等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上内容，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，任何在本申请揭露的技术范围内的变化或替换，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 (10)

  1. 一种无线充电系统，其特征在于，包括平板电脑、无线键盘和电子手写笔，所述无线键盘包括键盘主体、用于放置所述平板电脑的支架，以及用于活动连接所述键盘主体和所述支架的连接部；
    所述平板电脑中设置有第一电池、第一无线输出控制模块和第一无线输出线圈，所述第一无线输出控制模块与所述第一电池连接，所述第一无线输出线圈与所述第一无线输出控制模块连接；
    所述键盘主体中设置有第一无线接收线圈、第一无线接收控制模块、第一充电控制模块和第二电池，所述第一无线接收线圈接收所述第一无线输出线圈发出的电磁信号，所述第一无线接收控制模块与所述第一无线接收线圈连接，所述第一充电控制模块与所述第一无线接收控制模块连接，所述第二电池与所述第一充电控制模块连接；
    所述连接部包括一端设有开口的收纳腔，所述收纳腔用于经由所述开口收纳所述电子手写笔；
    所述收纳腔内设置有第二无线输出线圈，所述第二无线输出线圈和所述第一无线接收线圈连接；
    所述第二无线输出线圈用于为收纳在所述收纳腔内的所述电子手写笔无线充电。
  2. 根据权利要求1所述的无线充电系统，其特征在于，所述第二无线输出线圈和所述第一无线接收线圈通过匹配电路连接，所述匹配电路中包括第一电容和第二电容，所述第一电容与所述第一无线接收线圈形成谐振电路，所述第二电容和第二无线输出线圈形成谐振电路。
  3. 根据权利要求1或2所述的无线充电系统，其特征在于，所述平板电脑中还设置有第三无线输出线圈，所述第三无线输出线圈与所述第一无线输出控制模块连接，所述第三无线输出线圈用于为吸附在所述平板电脑上的所述电子手写笔无线充电。
  4. 根据权利要求1或2所述的无线充电系统，其特征在于，所述平板电脑中还设置有第二无线输出控制模块和第三无线输出线圈，所述第二无线输出控制模块与所述第一电池连接，所述第三无线输出线圈与所述第二无线输出控制模块连接，所述第三无线输出线圈用于为吸附在所述平板电脑上的所述电子手写笔无线充电。
  5. 根据权利要求4所述的无线充电系统，其特征在于，所述平板电脑上设置有稳压控制模块，所述稳压控制模块与所述第一电池相连，所述第一无线输出控制模块和所述第二无线输出控制模块均与所述稳压控制模块相连。
  6. 根据权利要求3所述的无线充电系统，其特征在于，所述第一无线输出线圈和所述第一无线输出控制模块之间设置有第一控制开关，所述第三无线输出线圈和所述第一无线输出控制模块之间设置有第二控制开关。
  7. 根据权利要求1至6任意一项所述的无线充电系统，其特征在于，所述电子手写笔内设置第二无线接收线圈、第二无线接收控制模块、第二充电控制模块和第三电池；
    所述第二无线接收线圈接收所述第二无线输出线圈发出的电磁信号；
    所述第二无线接收控制模块与所述第二无线接收线圈连接，所述第二充电控制模块与所述第二无线接收控制模块连接，所述第三电池与所述第二无线接收控制模块连 接。
  8. 根据权利要求1至7任意一项所述的无线充电系统，其特征在于，所述连接部包括转轴，所述转轴用于活动连接所述键盘主体和所述支架；
    其中，所述转轴的内部中空，且所述转轴的一端设有开口，形成所述收纳腔。
  9. 根据权利要求1至7任意一项所述的无线充电系统，其特征在于，所述连接部包括柔性连接件和收纳部件；
    所述柔性连接件用于弯折以活动连接所述键盘主体和所述支架；
    所述收纳部件固定在所述柔性连接件的弯折区域，所述收纳部件内部中空，且所述收纳部件的一端设有开口，形成所述收纳腔。
  10. 根据权利要求1至9任意一项所述的无线充电系统，其特征在于，所述收纳腔内还设置有弹压器件；其中，当所述电子手写笔收纳在所述收纳腔内时，所述弹压器件与所述电子手写笔的第二端接触；
    所述弹压器件，用于响应于用户对收纳在所述收纳腔内的所述电子手写笔的第一端的按压操作，将所述电子手写笔由所述第二端向所述第一端的方向弹出所述收纳腔；
    其中，所述第一端是所述电子手写笔收纳在所述收纳腔内时，位于所述开口的一端，所述第二端与所述第一端相对。
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CN117691764A (zh) 2024-03-12
US20240162752A1 (en) 2024-05-16
EP4207556A1 (en) 2023-07-05
CN113629894A (zh) 2021-11-09

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