CN211720337U - Wireless charging transmitting device, receiving device, charging system and household appliance - Google Patents
Wireless charging transmitting device, receiving device, charging system and household appliance Download PDFInfo
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- CN211720337U CN211720337U CN202020289961.XU CN202020289961U CN211720337U CN 211720337 U CN211720337 U CN 211720337U CN 202020289961 U CN202020289961 U CN 202020289961U CN 211720337 U CN211720337 U CN 211720337U
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Abstract
The utility model relates to a wireless transmitting device, receiving arrangement, charging system and domestic appliance that charge, include: the charging transmitting coil is used for transmitting a first wireless signal with a first preset frequency to the wireless charging receiving device; the charging signal generating unit is connected with the first end of the charging transmitting coil and used for driving the charging transmitting coil to generate a first wireless signal; and the communication signal receiving unit is connected with the second end of the charging transmitting coil and used for receiving a second wireless signal with a second preset frequency through the charging transmitting coil so as to acquire communication data. Implement the utility model discloses realization that can be convenient is wireless to charge and the data communication function, and it is wide to use the scene.
Description
Technical Field
The utility model relates to the field of communication technology, more specifically say, relate to a wireless transmitting device that charges, receiving arrangement, charging system and domestic appliance.
Background
At present, two methods are commonly used for testing the water temperature of a cup, one method is that a connector is added between a base and the cup, a temperature detection sensor is connected into the cup through the connector to detect the temperature, the scheme requires that the connector is waterproof, and the power supply needs to be reinforced and insulated; the other is that the temperature of the heating plate is tested on the base, and the water temperature tested by the scheme is not accurate.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the technical defect of the above-mentioned technique of prior art, a wireless transmitting device, receiving arrangement, charging system and domestic appliance that charge is provided.
The utility model provides a technical scheme that its technical problem adopted is: a wireless charging transmission device is configured, including:
the charging transmitting coil is used for transmitting a first wireless signal with a first preset frequency to the wireless charging receiving device;
the charging signal generating unit is connected with the first end of the charging transmitting coil and used for driving the charging transmitting coil to generate the first wireless signal;
and the communication signal receiving unit is connected with the second end of the charging transmitting coil and used for receiving a second wireless signal with a second preset frequency through the charging transmitting coil so as to acquire communication data.
Preferably, the communication signal receiving unit includes a first isolation circuit, an amplification circuit, and a communication signal processing circuit;
the first end of the first isolation circuit is connected with the second end of the charging transmitting coil, the second end of the first isolation circuit is connected with the input end of the amplifying circuit, and the output end of the amplifying circuit is connected with the communication signal processing circuit.
Preferably, the amplifying circuit comprises an operational amplifier U4;
the inverting input end of the operational amplifier U4 is connected with the first isolation unit, the non-inverting input end of the operational amplifier U4 is input with a reference voltage, and the output end of the operational amplifier U4 is connected with the communication signal processing circuit.
Preferably, the first isolation circuit comprises a diode D4 and a capacitor C4;
the anode of the diode D4 is connected to the second end of the charge transmitting coil, and the cathode of the diode D4 is connected to the amplifying circuit through the capacitor C4.
Preferably, the charging signal generating unit includes a first controller, a first driving circuit, and a first resonant circuit;
the first controller is used for outputting a charging driving signal;
the first driving circuit is connected with the first controller and the first resonant circuit and used for driving the first resonant circuit to resonate with the charging transmitting coil to generate a first alternating current signal with a first preset frequency, and the charging transmitting coil transmits the first wireless signal according to the first alternating current signal;
the communication signal processing unit is integrated with the first controller.
Preferably, the first driving circuit includes a transistor Q1 and a transistor Q2;
the collector of the triode Q1 is connected with a power supply, the emitter of the triode Q1 is connected with the first end of the charging emission coil, and the base of the triode Q1 is connected with the first controller;
the emitter of the triode Q2 is connected with the first end of the charging transmitting coil, the collector of the triode Q2 is grounded, and the base of the triode Q2 is connected with the first controller; and/or
The first resonant circuit comprises a capacitance C3;
the first end of the capacitor C3 is connected with the second end of the charging and transmitting coil, and the second end of the capacitor C3 is grounded.
The utility model discloses still construct a wireless receiving arrangement that charges, include:
the charging receiving coil is used for receiving a first wireless signal transmitted by the wireless charging transmitting device;
the charging signal receiving unit is connected with the charging receiving coil and used for receiving the first wireless signal to generate a charging voltage;
the power supply unit is connected with the charging signal receiving unit and used for outputting power supply voltage;
and the communication signal generating unit is connected with the charging receiving coil and the power supply unit and is used for driving the charging receiving coil to generate a second wireless signal with a second preset frequency.
Preferably, the communication signal generation unit includes:
one or more trigger circuits for generating corresponding trigger signals;
the second controller is connected with the trigger circuit and used for receiving the trigger signal to generate a second driving signal;
and the second driving circuit is connected with the second controller and used for receiving the second driving signal to output the second wireless signal.
Preferably, the charging signal receiving unit includes: the second resonant circuit, the rectifying circuit and the second isolating circuit;
the second resonant circuit is connected with the charging receiving coil to generate a second alternating current signal with a first preset frequency according to the first wireless signal;
the input end of the rectifying circuit is connected with the second resonant circuit to receive the second alternating current signal and output direct current voltage so as to generate the charging voltage;
the output end of the rectifying circuit is connected with the first end of the second isolating circuit, and the second end of the second isolating circuit is connected with the power supply unit.
Preferably, the second resonant circuit comprises a capacitor C2, the capacitor C2 being connected in parallel with the charge receiving coil; and/or
The rectification circuit comprises a first half-bridge tube D1 and a second half-bridge tube D3;
a first end of the first half-bridge tube D1 is connected to a first end of the second resonant circuit, a second end of the first half-bridge tube D1 is connected to the second isolation circuit, and a third end of the first half-bridge tube D1 is grounded;
a first end of the second half-bridge tube D3 is connected to a second end of the second resonant circuit, a second end of the second half-bridge tube D3 is connected to a second end of the first half-bridge tube D1, and a third end of the second half-bridge tube D3 is grounded; and/or
The second isolation circuit comprises a diode D2;
the anode of the diode D2 is connected with the rectifying circuit, and the cathode of the diode D2 is connected with the power supply unit.
Preferably, the second driving circuit comprises a MOS transistor Q3, a resistor R3 and a resistor R4;
the source electrode of the MOS tube Q3 is grounded, the drain electrode of the MOS tube Q3 is connected with the third end of the rectifying circuit through the resistor R3, and the grid electrode of the MOS tube Q3 is connected with the second controller through the resistor R4.
The utility model discloses still construct a wireless charging system, include: the wireless charging transmitting device according to any one of the above claims and the wireless charging receiving device according to any one of the above claims.
The utility model discloses still construct a domestic appliance, include, base and cup, the base is equipped with as above arbitrary one wireless charging transmitting device, be equipped with as above arbitrary one on the cup wireless charging receiving arrangement.
Preferably, the trigger unit includes a temperature detection circuit;
the trigger signal comprises a first trigger signal output according to the detected temperature of the temperature detection circuit; and/or
The trigger unit comprises an anti-overflow switch detection circuit;
the trigger signal comprises an anti-overflow switch state output second trigger signal according to the detection of the anti-overflow switch detection circuit.
Preferably, the temperature detection circuit comprises a thermistor RT1 and a resistor R5;
the first end of the thermistor RT1 is connected with the second controller, the first end of the thermistor RT1 is also connected with the power supply unit through the resistor R5, and the second end of the thermistor RT1 is grounded; and/or
The anti-overflow switch detection circuit comprises an anti-overflow switch S1 and a resistor R2;
the first end of the anti-overflow switch S1 is connected with the second controller, the first end of the anti-overflow switch S1 is connected with the power supply unit through the resistor R2, and the second end of the anti-overflow switch S1 is grounded.
Implement the utility model discloses a wireless transmitting device, receiving arrangement, charging system and domestic appliance that charges has following beneficial effect: the wireless charging and data communication can be conveniently realized, and the application scene is wide.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a schematic structural diagram of an embodiment of a wireless charging and transmitting device according to the present invention;
fig. 2 is a schematic circuit diagram of an embodiment of a wireless charging transmitter
Fig. 3 is a schematic structural diagram of an embodiment of a wireless charge receiving device according to the present invention;
fig. 4 is a schematic circuit diagram of an embodiment of the wireless charging receiving device of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, in an embodiment of the present invention, a wireless charging and transmitting device 100 includes: the charging transmitting coil 110 is configured to transmit a first wireless signal F1 with a first preset frequency to the wireless charging receiving apparatus 200; a charging signal generating unit 120 connected to a first end of the charging transmitting coil 110, for driving the charging transmitting coil 110 to generate a first wireless signal F1; and the communication signal receiving unit 130 is connected to the second end of the charging transmitting coil 110, and is configured to receive a second wireless signal F2 at a second preset frequency through the charging transmitting coil 110 to acquire communication data. Specifically, the charging signal generating unit 120 generates a first wireless signal F1 with a first preset frequency for providing an electric energy signal, the first wireless signal F1 is transmitted to the wireless charging receiving device 200 through the charging transmitting coil 110, and the wireless charging receiving device 200 can generate electric energy to perform charging after receiving the first wireless signal F1. The charging transmitting coil 110 may further be configured to receive a second wireless signal F2 with a second preset frequency, where the second wireless signal F2 is a communication signal, and the communication signal receiving unit 130 demodulates the second wireless signal F2 after receiving the second wireless signal F2 through the charging transmitting coil 110 to obtain communication data therein, so as to implement communication connection.
As shown in fig. 2, in an embodiment, the communication signal receiving unit 130 includes a first isolation circuit 131, an amplification circuit 132, and a communication signal processing circuit; the first end of the first isolation circuit 131 is connected to the second end of the charging transmitting coil 110, the second end of the first isolation circuit 131 is connected to the input end of the amplifying circuit 132, and the output end of the amplifying circuit 132 is connected to the communication signal processing circuit. The charging transmitting coil 110 is used for receiving signals, the signals are isolated by the first isolation unit, a second wireless signal F2 is obtained, the amplifying circuit is used for amplifying the second wireless signal F2 and then sending the second wireless signal to the communication signal processing circuit, and the communication signal processing circuit is used for processing the second wireless signal F2 and demodulating and obtaining communication data in the second wireless signal F2 to obtain final communication information.
Optionally, the amplifying circuit 132 includes an operational amplifier U4; the inverting input end of the operational amplifier U4 is connected with the first isolation unit, the non-inverting input end of the operational amplifier U4 inputs a reference voltage, and the output end of the operational amplifier U4 is connected with the communication signal processing circuit. Specifically, the amplification of the second wireless signal F2 is achieved by the operational amplifier U4.
Optionally, the first isolation circuit 131 includes a diode D4 and a capacitor C4; the anode of the diode D4 is connected to the second end of the charging and transmitting coil 110, and the cathode of the diode D4 is connected to the amplifying circuit via the capacitor C4. Specifically, the diode D4 is used to isolate the dc voltage signal, so as to obtain the second wireless signal F2.
Optionally, the charging signal generating unit 120 includes a first controller 121, a first driving circuit 122, and a first resonant circuit; the first controller 121 is configured to output a charging driving signal; the first driving circuit 12 is connected to the first controller 121 and the first resonant circuit, and is configured to drive the first resonant circuit to resonate with the charging transmitting coil 110 to generate a first ac signal with a first preset frequency, and the charging transmitting coil 110 transmits a first wireless signal F1 according to the first ac signal. Specifically, the first controller 121 generates and outputs a charging driving signal as needed, the first driving circuit 122 receives the charging driving signal, and drives the first resonant circuit to operate according to the charging driving signal, the first resonant circuit and the charging transmitting coil 110 generate a first ac signal with a first preset frequency when resonating together, the ac signal transmits a first wireless signal F1 through the charging transmitting coil 110, and the charging receiving unit can perform wireless charging through the first wireless signal F1. Wherein the first controller 121 is integrated with the communication signal processing unit.
In one embodiment, the first driving circuit 122 includes a transistor Q1 and a transistor Q2; a collector of the triode Q1 is connected with a power supply, an emitter of the triode Q1 is connected with a first end of the charging emission coil 110, and a base of the triode Q1 is connected with the first controller 121; an emitter electrode of the triode Q2 is connected with the first end of the charging emission coil 110, a collector electrode of the triode Q2 is grounded, and a base electrode of the triode Q2 is connected with the first controller 121; in another embodiment, the first resonant circuit includes a capacitance C3; the first terminal of the capacitor C3 is connected to the second terminal of the charging and transmitting coil 110, and the second terminal of the capacitor C3 is grounded. Specifically, the first driving circuit is turned off or on by the transistor Q1 and the transistor Q2, and the output of the first driving circuit passes through an LC oscillator circuit formed by the charging transmitting coil 110 and the capacitor C3, thereby generating an electromagnetic wave, i.e., a first wireless signal F1, around the coil. The first wireless signal F1 is received by the wireless receiving coil and then generates power supply through energy change.
In addition, as shown in fig. 3 and 4, the present invention provides a wireless charging receiving apparatus 200, including: a charging receiving coil 210 for receiving a first wireless signal F1 transmitted by the wireless charging transmission apparatus 100; a charging signal receiving unit 220 connected to the charging receiving coil 210 for receiving the first wireless signal F1 to generate a charging voltage; a power supply unit 240 connected to the charging signal receiving unit 220 for outputting a supply voltage; and a communication signal generating unit 230, connected to the charging receiving coil 210 and the power supply unit 240, for driving the charging receiving coil 210 to generate a second wireless signal F2 at a second preset frequency. Specifically, the charging receiving coil 210 receives a first wireless signal F1 transmitted by the wireless charging transmitting device 100 through the charging transmitting coil 110, the charging signal receiving unit 220 receives the first wireless signal F1, processes the first wireless signal to generate a charging voltage, the charging voltage is processed by the power supply unit 240 to output a power supply voltage required by the operation of the wireless charging receiving device 200, after the power supply voltage is generated, the communication signal generating unit 230 starts to operate, drives the charging receiving coil 210 to generate a second wireless signal F2 with a second preset frequency according to the operation of the internal circuit, and transmits communication data generated by the communication signal through the second wireless signal F2. It is understood that the receiving of the first wireless signal F1 and the transmitting of the second wireless signal F2 of the charging reception coil 210 may be performed alternately.
In an embodiment, the communication signal generating unit 230 includes: one or more trigger circuits 2311, 2312 for generating corresponding trigger signals; a second controller 232 connected to the trigger circuits 2311 and 2312 for receiving the trigger signal to generate a second driving signal; the second driving circuit 2331 is connected to the second controller 232 for receiving the second driving signal to output a second wireless signal F2. Specifically, the communication signal generation unit 230 may generate a trigger signal including a plurality of trigger signals corresponding to the plurality of trigger circuits, respectively, through one or more trigger units 2311, 2312. The second controller 232 generates a corresponding second driving signal according to the trigger signal, a first end of the second driving circuit 2331 is connected to the third end of the rectifying circuit 221, a second end of the second driving circuit 2331 is grounded, and a third end of the second driving circuit 2331 is connected to the second controller 232. The second driving unit 2331 is driven to operate by the second driving signal, and the second driving unit 2331 is operated to generate and transmit a second wireless signal F2 of a second preset frequency, i.e. the second wireless signal F2 with the communication data, on the charge receiving coil 210 through the resonance of the charge receiving coil 210. The second wireless signal F2 is output according to the second driving signal. That is, it can be understood that the emission of the second wireless signal F2 can be triggered according to the need according to the operating circuit inside the wireless charge receiving device 200.
In one embodiment, the charging signal receiving unit 220 includes: a second resonant circuit, a rectifying circuit 221, and a second isolation circuit; the second resonant circuit is connected with the charging receiving coil 210 to generate a second alternating current signal of the first preset frequency according to the first wireless signal F1; the input end of the rectifying circuit 221 is connected to the second resonant circuit to receive the second ac signal and output a dc voltage to generate a charging voltage; the output terminal of the rectifying circuit 221 is connected to the first terminal of the second isolation circuit, and the second terminal of the second isolation circuit is connected to the power supply unit 240. Specifically, after receiving the first wireless signal F1, the charging receiving coil 210 generates an alternating current driven by the second resonant circuit, the alternating current is rectified by the rectifying circuit, and then filtered by the second isolating circuit to filter out an alternating current component, and outputs a direct current voltage, which is the charging voltage. The charging voltage is processed by the power supply unit 240 to supply power to the internal operating circuit.
In one embodiment, the second resonant circuit includes a capacitor C2, the capacitor C2 being connected in parallel with the charge receiving coil 210; in one embodiment, the rectifying circuit 221 includes a first half-bridge tube D1 and a second half-bridge tube D3; the first end of the first half-bridge tube D1 is connected with the first end of the second resonant circuit, the second end of the first half-bridge tube D1 is connected with the second isolation circuit, and the third end of the first half-bridge tube D1 is grounded; a first end of the second half-bridge tube D3 is connected with a second end of the second resonant circuit, a second end of the second half-bridge tube D3 is connected with a second end of the first half-bridge tube D1, and a third end of the second half-bridge tube D3 is grounded; in another embodiment, the second isolation circuit includes a diode D2; the anode of the diode D2 is connected to the rectifier circuit, and the cathode of the diode D2 is connected to the power supply unit 240. Specifically, the second resonant circuit may be formed by a capacitor C2 connected in parallel with the charging receiving coil 210, and the rectifying circuit may be formed by two half-bridge transistors connected to each other, which finally outputs a dc voltage, which may be isolated by a transistor D2.
Optionally, the second driving circuit 2331 includes a MOS transistor Q3, a resistor R3, and a resistor R4; the source electrode of the MOS transistor Q3 is grounded, the drain electrode of the MOS transistor Q3 is connected with the third end of the rectifying circuit through a resistor R3, and the grid electrode of the MOS transistor Q3 is connected with the second controller through a resistor R4. Specifically, when the second controller 232 needs to transmit communication data, it controls the switch Q3 to turn on or off, so that the load connected to the switch Q3 is changing, and the change of the load will cause the voltage on the transmitting end capacitor C3 to fluctuate. By detecting the voltage fluctuation on the C3, the data returned by the detection terminal is received.
Additionally, the utility model discloses a wireless charging system, including above-mentioned above arbitrary one wireless charging transmitting device and above-mentioned arbitrary one wireless charging receiving arrangement 200. Specifically, the wireless charging system implements a charging process and a communication data transmission process in which the charging signal generation unit 120 drives the charging transmission coil 110 to generate a first wireless signal F1 at a first frequency, and transmits the first wireless signal F1 to the charging reception coil 210 through the charging transmission coil 110, and the charging signal reception unit 220 receives the first wireless signal F1 through the charging reception coil 210 to generate a charging voltage; the communication signal generating unit is electrically operated according to the charging voltage to drive the charging receiving coil 210 to generate a second wireless signal F2 with a second preset frequency; the communication signal receiving unit 130 receives the second wireless signal F2 of the second preset frequency through the charging transmission coil 110 to acquire communication data. The more detailed circuit operation process can refer to the upper description, and is not described herein again.
Additionally, the utility model discloses a household appliance, include, base and cup, the base is equipped with as above arbitrary one wireless charging transmitting device, is equipped with as above arbitrary one wireless charging receiving arrangement 200 on the cup. Specifically, the base and the cup body are designed separately, wherein the cup body can be placed on the base for heating as required, in the process of heating the cup body by combining the base and the cup body, the working circuit in the cup body can be charged through the wireless charging transmitting device arranged on the base and the wireless charging receiving device 200 arranged on the cup body, the communication signal generating unit in the wireless charging receiving device 200 in the cup body starts to work through the charging voltage, communication data is generated, the communication data is transmitted to the charging transmitting coil 110 in the wireless charging transmitting device 100 through the second wireless signal F2 transmitted by the charging receiving coil 210 in the wireless charging receiving device 200, and the final communication data is acquired after being processed through the communication signal processing unit. In order to realize the independent design of the working circuit in the cup body through the process, and improve the protection performance and the reliability of the working circuit in the cup body.
Optionally, in an embodiment, the triggering units 2311, 2312 include a temperature detection circuit 2311; the trigger signal includes a first trigger signal output according to a detected temperature of the temperature detection circuit; specifically, a temperature detection circuit may be disposed in the cup, the temperature detection circuit detects the temperature of the cup and outputs a corresponding trigger signal, i.e., a first trigger signal, the trigger signal triggers the communication signal generation unit to drive the charging receiving coil 210 to generate a second wireless signal F2, so as to transmit communication data through the second wireless signal F2, and the communication data may include a temperature detection result or detection information of the temperature detection circuit. The communication signal processing circuit in the wireless charging transmission device 100 acquires the communication data through the second wireless signal F2 to acquire the temperature detection result or detection information to perform further control work, such as stopping heating when the temperature reaches a requirement.
In another example, the triggering units 2311, 2312 include an anti-overflow switch detection circuit 2312; the trigger signal includes outputting a second trigger signal based on the detected state of the overflow prevention switch by the overflow prevention switch detection circuit. Specifically, an overflow prevention switch detection circuit may be disposed in the cup, the overflow prevention switch detection circuit detects whether the cup overflows and outputs a corresponding trigger signal, that is, a second trigger signal, the trigger signal triggers the communication signal generation unit to drive the charging receiving coil 210 to generate the second wireless signal F2, so as to perform communication data transmission through the second wireless signal F2, and the communication data may include a detection result or detection information of the overflow prevention switch detection circuit. The communication signal processing circuit in the wireless charging transmission device 100 acquires the communication data through the second wireless signal F2 to acquire the detection result or detection information of the anti-overflow switch detection circuit to perform further control operations, such as stopping heating when liquid overflow occurs, or generating an alarm.
As shown in FIG. 4, in one embodiment, the temperature sensing circuit includes a thermistor RT1 and a resistor R5; the first end of the thermistor RT1 is connected with the second controller, the first end of the thermistor RT1 is also connected with the power supply unit 240 through a resistor R5, and the second end of the thermistor RT1 is grounded; in another embodiment, the anti-overflow switch detection circuit includes an anti-overflow switch S1 and a resistor R2; the first end of the overflow prevention switch S1 is connected to the second controller, the first end of the overflow prevention switch S1 is connected to the power supply unit 240 through the resistor R2, and the second end of the overflow prevention switch S1 is grounded. Specifically, the temperature detection unit is also powered by the power supply unit 240, after receiving the first wireless signal F1 through the charging receiving coil 210 for charging, the thermistor RT1 and the resistor R5 in the temperature detection circuit form a voltage division circuit, the second controller obtains the voltage division, generates corresponding communication data according to the voltage division, and transmits the communication data to the communication signal processing unit through the charging receiving coil 210 and the charging transmitting coil 110 for processing. It can be understood that the communication data may include real-time temperature detection data, or communication data that generates a determination result of the temperature detection when the temperature data reaches a preset condition. The anti-overflow switch detection circuit is also powered by the power supply unit 240, and after receiving the first wireless signal F1 through the charging coil 210 for charging, the anti-overflow switch S1 and the resistor R2 in the anti-overflow switch detection circuit form a pull-up or pull-down for the corresponding pin of the second controller. When the anti-overflow switch S1 is off, the corresponding pin of the second controller is pulled up, and the voltage of the corresponding pin is the maximum voltage; when the anti-overflow switch S1 is closed, the corresponding pin of the second controller is pulled down, and is directly grounded, the detected voltage is minimum, and corresponding communication data can be generated according to the voltage condition of the corresponding pin, and the communication data is transmitted to the communication signal processing unit through the charging receiving coil 210 and the charging transmitting coil 110 for processing. It will be appreciated that the communication may include detecting the off or on state of the overfill prevention switch S1 to determine an overfill condition for the cup. The anti-spill switch is normally open and may be closed in the event of a spill. The design can be selected and designed according to different switches. After the condition that the liquid in the cup body overflows is judged, the continuous heating or the disconnection heating of the cup body can be controlled. In other embodiments, more triggering conditions may be set in the cup to enable wireless transmission of communication data via the charging transmit coil 110 and the charging receive coil 210.
It is understood that the household appliances herein may include kitchen appliances such as cooks, blenders, wall breaking machines, etc.
It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (15)
1. A wireless charging transmission device, comprising:
the charging transmitting coil is used for transmitting a first wireless signal with a first preset frequency to the wireless charging receiving device;
the charging signal generating unit is connected with the first end of the charging transmitting coil and used for driving the charging transmitting coil to generate the first wireless signal;
and the communication signal receiving unit is connected with the second end of the charging transmitting coil and used for receiving a second wireless signal with a second preset frequency through the charging transmitting coil so as to acquire communication data.
2. The wireless charging transmission device according to claim 1, wherein the communication signal receiving unit includes a first isolation circuit, an amplification circuit, and a communication signal processing circuit;
the first end of the first isolation circuit is connected with the second end of the charging transmitting coil, the second end of the first isolation circuit is connected with the input end of the amplifying circuit, and the output end of the amplifying circuit is connected with the communication signal processing circuit.
3. The wireless charging transmission device according to claim 2, wherein the amplification circuit includes an operational amplifier U4;
the inverting input end of the operational amplifier U4 is connected with the first isolation unit, the non-inverting input end of the operational amplifier U4 is input with a reference voltage, and the output end of the operational amplifier U4 is connected with the communication signal processing circuit.
4. The wireless charging transmission device of claim 2, wherein the first isolation circuit comprises a diode D4 and a capacitor C4;
the anode of the diode D4 is connected to the second end of the charge transmitting coil, and the cathode of the diode D4 is connected to the amplifying circuit through the capacitor C4.
5. The wireless charging transmission device according to claim 2, wherein the charging signal generation unit includes a first controller, a first drive circuit, and a first resonance circuit;
the first controller is used for outputting a charging driving signal;
the first driving circuit is connected with the first controller and the first resonant circuit and used for driving the first resonant circuit to resonate with the charging transmitting coil to generate a first alternating current signal with a first preset frequency, and the charging transmitting coil transmits the first wireless signal according to the first alternating current signal;
the communication signal processing unit is integrated with the first controller.
6. The wireless charging transmitting device of claim 5, wherein the first driving circuit comprises a transistor Q1 and a transistor Q2;
the collector of the triode Q1 is connected with a power supply, the emitter of the triode Q1 is connected with the first end of the charging emission coil, and the base of the triode Q1 is connected with the first controller;
the emitter of the triode Q2 is connected with the first end of the charging transmitting coil, the collector of the triode Q2 is grounded, and the base of the triode Q2 is connected with the first controller; and/or
The first resonant circuit comprises a capacitance C3;
the first end of the capacitor C3 is connected with the second end of the charging and transmitting coil, and the second end of the capacitor C3 is grounded.
7. A wireless charging receiving device, comprising:
the charging receiving coil is used for receiving a first wireless signal transmitted by the wireless charging transmitting device;
the charging signal receiving unit is connected with the charging receiving coil and used for receiving the first wireless signal to generate a charging voltage;
the power supply unit is connected with the charging signal receiving unit and used for outputting power supply voltage;
and the communication signal generating unit is connected with the charging receiving coil and the power supply unit and is used for driving the charging receiving coil to generate a second wireless signal with a second preset frequency.
8. The wireless charge receiving device according to claim 7, wherein the communication signal generating unit comprises:
one or more trigger circuits for generating corresponding trigger signals;
the second controller is connected with the trigger circuit and used for receiving the trigger signal to generate a second driving signal;
and the second driving circuit is connected with the second controller and used for receiving the second driving signal to output the second wireless signal.
9. The wireless charge receiving device according to claim 8, wherein the charge signal receiving unit comprises: the second resonant circuit, the rectifying circuit and the second isolating circuit;
the second resonant circuit is connected with the charging receiving coil to generate a second alternating current signal with a first preset frequency according to the first wireless signal;
the input end of the rectifying circuit is connected with the second resonant circuit to receive the second alternating current signal and output direct current voltage so as to generate the charging voltage;
the output end of the rectifying circuit is connected with the first end of the second isolating circuit, and the second end of the second isolating circuit is connected with the power supply unit.
10. The wireless charge receiving arrangement of claim 9,
the second resonant circuit comprises a capacitor C2, the capacitor C2 being connected in parallel with the charge receiving coil; and/or
The rectification circuit comprises a first half-bridge tube D1 and a second half-bridge tube D3;
a first end of the first half-bridge tube D1 is connected to a first end of the second resonant circuit, a second end of the first half-bridge tube D1 is connected to the second isolation circuit, and a third end of the first half-bridge tube D1 is grounded;
a first end of the second half-bridge tube D3 is connected to a second end of the second resonant circuit, a second end of the second half-bridge tube D3 is connected to a second end of the first half-bridge tube D1, and a third end of the second half-bridge tube D3 is grounded; and/or
The second isolation circuit comprises a diode D2;
the anode of the diode D2 is connected with the rectifying circuit, and the cathode of the diode D2 is connected with the power supply unit.
11. The wireless charging receiving device according to claim 9, wherein the second driving circuit comprises a MOS transistor Q3, a resistor R3 and a resistor R4;
the source electrode of the MOS tube Q3 is grounded, the drain electrode of the MOS tube Q3 is connected with the third end of the rectifying circuit through the resistor R3, and the grid electrode of the MOS tube Q3 is connected with the second controller through the resistor R4.
12. A wireless charging system, comprising: the wireless charging transmission device according to any one of claims 1 to 6 and the wireless charging receiving device according to any one of claims 7 to 11.
13. An electric household appliance, characterized in that, comprises a base and a cup body, the base is provided with the wireless charging transmitting device according to any one of claims 1 to 6, and the cup body is provided with the wireless charging receiving device according to any one of claims 8 to 11.
14. The household appliance according to claim 13, wherein the trigger circuit comprises a temperature detection circuit;
the trigger signal comprises a first trigger signal output according to the detected temperature of the temperature detection circuit; and/or
The trigger circuit comprises an anti-overflow switch detection circuit;
the trigger signal comprises an anti-overflow switch state output second trigger signal according to the detection of the anti-overflow switch detection circuit.
15. The household appliance according to claim 14, wherein the temperature detection circuit comprises a thermistor RT1 and a resistor R5;
the first end of the thermistor RT1 is connected with the second controller, the first end of the thermistor RT1 is also connected with the power supply unit through the resistor R5, and the second end of the thermistor RT1 is grounded; and/or
The anti-overflow switch detection circuit comprises an anti-overflow switch S1 and a resistor R2;
the first end of the anti-overflow switch S1 is connected with the second controller, the first end of the anti-overflow switch S1 is connected with the power supply unit through the resistor R2, and the second end of the anti-overflow switch S1 is grounded.
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