CN108649715B - Wireless charging device and method - Google Patents
Wireless charging device and method Download PDFInfo
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- CN108649715B CN108649715B CN201810806020.6A CN201810806020A CN108649715B CN 108649715 B CN108649715 B CN 108649715B CN 201810806020 A CN201810806020 A CN 201810806020A CN 108649715 B CN108649715 B CN 108649715B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- 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
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a wireless charging device which comprises a microprocessor, a first coil driving module and a second coil driving module. The first coil driving module and the second coil driving module respectively receive the first data information and the second data information transmitted by the first mobile device and the second mobile device, the microprocessor respectively generates a first pulse bandwidth demodulation signal and a second pulse bandwidth demodulation signal according to the first data information and the second data information, and the first coil driving module and the second coil driving module respectively charge the first mobile device and the second mobile device according to the first pulse bandwidth demodulation signal and the second pulse bandwidth demodulation signal. The first coil driving module and the second coil driving module respectively perform information decoding processing on the first data information and the second data information. The wireless charging device provided by the invention can independently charge the first and second mobile devices by a single microprocessor, thereby effectively reducing the cost.
Description
Technical Field
The invention relates to the field of electronic circuits, in particular to a wireless charging device and a wireless charging method.
Background
Generally, a wireless charging transmitter can only charge a wireless charging receiver. In the prior art, when a wireless charging transmitter charges a plurality of wireless charging receivers, a plurality of circuit modules connected in parallel are utilized, and the disadvantage of the mode is that signals are mutually interfered, more power input ends and adapters need to be paved, so that great waste is caused in cost, and excessive wire harnesses are needed, so that the use is inconvenient.
Disclosure of Invention
In view of the above, the present invention provides a wireless charging device capable of effectively reducing manufacturing costs.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
In a first aspect, the present invention provides a wireless charging device having a power input port and an ac-dc converter, the power input port being electrically connected to the ac-dc converter, the power input port being configured to receive an ac power, the ac-dc converter converting the ac power into a dc power, the wireless charging device comprising:
the microprocessor is electrically connected with the alternating current-direct current converter;
The first coil driving module is electrically connected with the microprocessor, and is used for receiving first data information transmitted by a first mobile device, performing information decoding processing on the first data information by the first coil driving module, generating a first pulse bandwidth demodulation signal by the microprocessor according to the first data information, and charging the first mobile device by the first coil driving module according to the first pulse bandwidth demodulation signal;
The second coil driving module is electrically connected with the microprocessor, and is used for receiving second data information transmitted by a second mobile device, performing information decoding processing on the second data information, generating a second pulse bandwidth demodulation signal according to the second data information, and charging the second mobile device according to the second pulse bandwidth demodulation signal;
the microprocessor performs anti-interference on the first coil driving module and the second coil driving module according to the first data information after the information decoding processing and the second data information after the information decoding processing.
As an alternative embodiment, the first pulse bandwidth demodulation signal generated by the first data information after the information decoding process is independent of the second pulse bandwidth demodulation signal generated by the second data information after the information decoding process.
As an alternative embodiment, the first coil driving module includes:
the first input voltage detection circuit is electrically connected with the alternating current-direct current converter;
the first voltage reduction circuit is electrically connected with the first input voltage detection circuit, and is used for detecting the input voltage of the first voltage reduction circuit and generating a first power signal;
The first output voltage detection circuit is electrically connected with the first voltage reduction circuit and the microprocessor and is used for detecting the output voltage of the first voltage reduction circuit.
As an alternative embodiment, the second coil driving module includes:
The second input voltage detection circuit is electrically connected with the alternating current-direct current converter and the microprocessor;
The second voltage reduction circuit is electrically connected with the second input voltage detection circuit, and is used for detecting the input voltage of the second voltage reduction circuit and generating a second power signal;
The second output voltage detection circuit is electrically connected with the second voltage reduction circuit and the microprocessor and is used for detecting the output voltage of the second voltage reduction circuit.
As an alternative embodiment, the wireless charging device further includes:
The light-emitting module is electrically connected with the microprocessor, the microprocessor dynamically adjusts the first light-emitting mode of the light-emitting module according to the first charging mode of the first coil driving module, and the microprocessor dynamically adjusts the second light-emitting mode of the light-emitting module according to the second charging mode of the second coil driving module.
As an alternative embodiment, the first coil driving module further includes:
A first resonant circuit configured to receive the first data information transmitted by the first mobile device, the first resonant circuit configured to transmit a first wireless charging signal to the first mobile device;
the first voltage detection circuit is electrically connected with the first resonant circuit and generates first voltage detection information according to the first data information;
the first current detection circuit is electrically connected with the first resonant circuit and generates first current detection information according to the first data information;
The first information decoding circuit is electrically connected with the first voltage detection circuit, the first current detection circuit and the microprocessor, and is used for receiving the first voltage detection information transmitted by the first voltage detection circuit and the first current detection information transmitted by the first current detection circuit to generate first decoding information, and the microprocessor is used for generating the first pulse bandwidth demodulation signal through information decoding according to the first decoding information, wherein the information decoding is used for removing noise of the first voltage detection information and the first current detection information;
the first MOS driver is electrically connected with the microprocessor, receives the first pulse bandwidth demodulation signal transmitted by the microprocessor, and generates a first driving signal according to the first pulse bandwidth demodulation signal;
The first voltage stabilizing circuit is electrically connected with the first voltage reducing circuit and the microprocessor, and is used for receiving the first power signal transmitted by the first voltage reducing circuit and the first power control signal transmitted by the microprocessor, and generating a first voltage stabilizing signal according to the first power signal and the first power control signal;
The first MOS tube is electrically connected with the first MOS driver, the first voltage stabilizing circuit and the first resonant circuit, receives the first driving signal transmitted by the first MOS driver and the first voltage stabilizing signal transmitted by the first voltage stabilizing circuit, and generates a first amplifying signal according to the first driving signal and the first voltage stabilizing signal and transmits the first amplifying signal to the first resonant circuit.
As an alternative embodiment, the first coil driving module further includes:
the first temperature detection circuit is electrically connected with the first resonant circuit and the microprocessor, and is used for detecting a first temperature signal of the first resonant circuit and transmitting the first temperature signal to the microprocessor, and the microprocessor dynamically adjusts the first pulse bandwidth demodulation signal according to the first temperature signal.
As an alternative embodiment, the second coil driving module further includes:
A second resonant circuit for receiving second data information transmitted by the second mobile device through the coil, the second resonant circuit for transmitting a second wireless charging signal to the second mobile device through the coil;
the second voltage detection circuit is electrically connected with the second resonance circuit and generates second voltage detection information according to the second data information;
The second current detection circuit is electrically connected with the second resonance circuit and generates second current detection information according to the second data information;
the second information decoding circuit is electrically connected with the second voltage detection circuit, the second current detection circuit and the microprocessor, and is used for receiving the second voltage detection information transmitted by the second voltage detection circuit and the second current detection information transmitted by the second current detection circuit to generate second information decoding information, and the microprocessor is used for generating the second pulse bandwidth demodulation signal through information decoding processing according to the second information decoding information, wherein the information decoding processing is used for removing noise of the second voltage detection information and the second current detection information;
The second MOS driver is electrically connected with the microprocessor, receives the second pulse bandwidth demodulation signal transmitted by the microprocessor, and generates a second driving signal according to the second pulse bandwidth demodulation signal;
The second voltage stabilizing circuit is electrically connected with the second voltage reducing circuit and the microprocessor, and is used for receiving the second power signal transmitted by the second voltage reducing circuit and the second power control signal transmitted by the microprocessor, and generating a second voltage stabilizing signal according to the second power signal and the second power control signal;
The second MOS tube is electrically connected with the second MOS driver, the second voltage stabilizing circuit and the second resonant circuit, receives the second driving signal transmitted by the second MOS driver and the second voltage stabilizing signal transmitted by the second voltage stabilizing circuit, and generates a second amplifying signal according to the second driving signal and the second voltage stabilizing signal and transmits the second amplifying signal to the second resonant circuit.
As an alternative embodiment, the second coil driving module further includes:
The second temperature detection circuit is electrically connected with the second resonance circuit and the microprocessor, and is used for detecting a second temperature signal of the second resonance circuit and transmitting the second temperature signal to the microprocessor, and the microprocessor dynamically adjusts the second pulse bandwidth demodulation signal according to the second temperature signal.
In a second aspect, the present invention provides a wireless charging method, applied to a wireless charging device, where the wireless charging device has a power input port, an ac-dc converter, a microprocessor, a first coil driving module and a second coil driving module, the power input port is electrically connected to the ac-dc converter, the power input port is used for receiving an ac power, and the ac-dc converter converts the ac power into a dc power, and the wireless charging method includes:
receiving, by the first coil drive module, first data information transmitted by a first mobile device;
the first coil driving module performs information decoding processing on the first data information;
generating, by the microprocessor, a first pulse bandwidth demodulation signal based on the first data information;
Charging the first moving device by the first coil drive module according to the first pulse bandwidth demodulation signal;
receiving, by the second coil drive module, second data information transmitted by a second mobile device;
performing information decoding processing on the second data information by the second coil driving module;
Generating, by the microprocessor, a second pulse bandwidth demodulation signal based on the second data information;
charging the second mobile device by the second coil drive module according to the second pulse bandwidth demodulation signal;
the microprocessor performs anti-interference on the first coil driving module and the second coil driving module according to the first data information after the information decoding processing and the second data information after the information decoding processing.
According to the wireless charging device and the wireless charging method, on the basis of the existing wireless charging device, the first electronic device and the second electronic device are independently charged through the first coil driving module and the second coil driving module by utilizing a single microprocessor. The first information decoding circuit of the first coil driving module decodes the first data information, the second information decoding circuit of the second coil driving module decodes the second data information, information interference between the first electronic device and the second electronic device can be effectively prevented, in addition, the first electronic device and the second electronic device are independently charged under the control of a single microprocessor, and the manufacturing cost of the wireless charging device can be reduced.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope of the present invention.
Fig. 1 is a block diagram of a wireless charging device according to embodiment 1 of the present invention.
Fig. 2 is a block diagram of a wireless charging device according to embodiment 2 of the present invention.
Fig. 3 is a flowchart of a method for providing a wireless charging method according to embodiment 3 of the present invention.
Description of main reference numerals:
100. 200-a wireless charging device; 110. 210-a power input port; 120. 220-ac-dc converter; 130. 230-a microprocessor; 140. 240-a first coil drive module; 150. 250-a second coil drive module; 2401-a first input voltage detection circuit; 2402-a first step-down circuit; 2403-a first output voltage detection circuit; 2404-a first resonant circuit; 2405-a first voltage detection circuit; 2406-a first current detection circuit; 2407-a first information decoding circuit; 2408-a first MOS driver; 2409-a first voltage stabilizing circuit; 2410-a first MOS transistor; 2411-a first temperature detection circuit; 2501-a second input voltage detection circuit; 2502-a second step-down circuit; 2503-a second output voltage detection circuit; 2504-a second resonant circuit; 2505-a second voltage detection circuit; 2506-a second current detection circuit; 2507-a second information decoding circuit; 2508-second MOS driver; 2509-a second voltage stabilizing circuit; 2510—a second MOS transistor; 2511-a second temperature detection circuit; 260-light emitting module.
Detailed Description
Embodiments of the present invention are described in detail below, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
Example 1
Referring to fig. 1, fig. 1 is a block diagram of a wireless charging device according to embodiment 1 of the present invention. The wireless charging device 100 includes a power input port 110, an ac-dc converter 120, a microprocessor 130, a first coil driving module 140 and a second coil driving module 150. The power input port 110, the ac-dc converter 120, the microprocessor 130, the first coil driving module 140, and the second coil driving module 150 may be disposed in the same integrated circuit.
The ac/dc converter 120 is electrically connected to the power input port 110 and the microprocessor 130. The microprocessor 130 is electrically connected to the first coil driving module 140 and the second coil driving module 150. For example, the power input port 110 may be a USB port, a micro USB port, or a C-type port. The power input port 110 is for receiving ac power. The ac-dc converter 120 converts the ac power to dc power and provides the dc power to the first coil driving module 140 and the second coil driving module 150 through the microprocessor 130.
The first coil driving module 140 is configured to receive first data information transmitted by the first actuator. For example, the first mobile device may be a smart watch or a smart phone, and the first data information may represent a charging power, a remaining power, or a preset full charge time of the smart phone. The first coil driving module 140 performs an information decoding process on the first data information. The microprocessor 130 generates a first pulse bandwidth demodulation signal (PWM SIGNAL, pulse width modulation signal) based on the first data information, for example, the microprocessor 130 may be a central processing unit (CPU, center processor unit). The first coil driving module 140 charges the first driving device according to the first pulse bandwidth demodulation signal, for example, the first coil driving module 140 may rapidly charge the first driving device according to a duty ratio (e.g., 90%) of the first pulse bandwidth demodulation signal, and the first coil driving module 140 may normally charge the first driving device according to a duty ratio (e.g., 60%) of the first pulse bandwidth demodulation signal.
The second coil driving module 150 is configured to receive second data information transmitted by the second mobile device. The second coil driving module 150 performs an information decoding process on the second data information. The microprocessor 130 generates a second pulse bandwidth demodulation signal based on the second data information. The second coil driving module 150 charges the second mobile device according to the second pulse bandwidth demodulation signal. The first coil driving module 140 performs information decoding processing on the first data signal, and the second coil driving module 150 performs information decoding processing on the second data signal.
The microprocessor 130 performs anti-interference on the first coil driving module 140 and the second coil driving module 150 according to the first data information after the information decoding process and the second data information after the information decoding process. Wherein the first data information after the decoding process is independent of the second data information after the decoding process. In addition, the first pulse bandwidth demodulation signal generated by the first data information after the information decoding processing is independent of the second pulse bandwidth demodulation signal generated by the second data information after the information decoding processing, in other words, the first pulse bandwidth demodulation signal is independent of the second pulse bandwidth demodulation signal, so that information interference between the first mobile device and the second mobile device is effectively prevented. In addition, the first and second mobile devices are independently charged by the microprocessor 130 through the first and second coil driving modules 140 and 150, respectively, so that the manufacturing cost of the wireless charging device 100 can be effectively reduced, and the circuit space of the wireless charging device 100 can be reduced.
Example 2
Referring to fig. 2, fig. 2 is a block diagram of a wireless charging device according to embodiment 2 of the present invention. . The wireless charging device 200 includes a power input port 210, an ac-dc converter 220, a microprocessor 230, a first coil driving module 240, a second coil driving module 250, and a light emitting module 260. The power input port 210 and the ac-dc converter 220 are described in embodiment 1, and are not described herein.
The first coil driving module 240 includes a first input voltage detection circuit 2401, a first step-down circuit 2402, a first output voltage detection circuit 2403, a first resonant circuit 2404, a first voltage detection circuit 2405, a first current detection circuit 2406, a first information decoding circuit 2407, a first MOS driver 2408, a first voltage stabilizing circuit 2409, a first MOS tube 2410, and a first temperature detection circuit 2411.
In fig. 2, the first input voltage detecting circuit 2401 is electrically connected to the ac-dc converter 220 and the microprocessor 230. The first step-down circuit 2402 is electrically connected to the first input voltage detection circuit 2401. The first input voltage detection circuit 2401 is configured to detect an input voltage of the first step-down circuit 2402. The first step-down circuit 2402 is configured to generate a first power signal, and the first step-down circuit 2402 transmits the first power signal to the first voltage stabilizing circuit 2409. The first output voltage detection circuit 2403 is electrically connected to the first step-down circuit 2402 and the microprocessor 230. The first output voltage detection circuit 2403 is configured to detect an output voltage of the first step-down circuit 2402. In other words, the first input voltage detection circuit 2401 and the first output voltage detection circuit 2403 may be used to detect a voltage drop generated by the first step-down circuit 2402.
The light emitting module 260 is electrically connected to the microprocessor 230, for example, the light emitting module 260 may be a Light Emitting Diode (LED). The microprocessor 230 dynamically adjusts the first lighting mode of the lighting module 260 according to the first charging mode of the first coil driving module 240, for example, the lighting module 260 emits green light when the first driving device is in the fast charging mode. The microprocessor 230 dynamically adjusts the second lighting mode of the lighting module 260 according to the second charging mode of the second coil driving module 250, for example, the lighting module 260 emits yellow light when the second mobile device is in the normal charging mode.
The first resonant circuit 2404 is configured to receive, through the coil, first data information transmitted by the first mobile device, for example, the first resonant circuit 2404 may be an LC resonant circuit, the first data information may be a model of a smart phone, and the microprocessor 230 may determine whether the smart phone supports the fast charging function according to the model of the smart phone. The first resonant circuit 2404 may send a first wireless charging signal to the first mobile device through the coil, for example, when the first mobile device may support the fast charging function, the first resonant circuit 2404 may send a high power wireless charging signal through the coil, and when the first mobile device may not support the fast charging function, the first resonant circuit 2404 may send a low power wireless charging signal through the coil. The first voltage detection circuit 2405 is electrically connected to the first resonant circuit 2404, and the first voltage detection circuit 2405 generates first voltage detection information according to the first data information. The first current detection circuit 2406 is electrically connected to the first resonant circuit 2404, and the first current detection circuit 2406 generates first current detection information according to the first data information.
The first information decoding circuit 2407 is electrically connected to the first voltage detecting circuit 2405, the first current detecting circuit 2406 and the microprocessor 230. The first information decoding circuit 2407 receives the first voltage detection information transmitted by the first voltage detection circuit 2405 and the first current detection information transmitted by the first current detection circuit 2406 to generate first decoding information, for example, the first voltage detection information and/or the first current detection information may include noise, and the first information decoding circuit 2407 may cancel the interference signal by analyzing the noise of the first voltage detection information and/or the noise of the first current detection information. The microprocessor 230 generates the first pulse bandwidth demodulation signal through an information decoding process according to the first decoding information.
The first MOS driver 2408 is electrically connected to the microprocessor 230. The first MOS driver 2408 receives the first pulse-width modulated signal transmitted from the microprocessor 230. The first MOS driver 2408 generates a first driving signal according to the first pulse-width demodulation signal, for example, the first MOS driver 2408 may generate a higher driving signal according to the first pulse-width demodulation signal (high duty cycle), and the first MOS driver 2408 may generate a lower driving signal according to the first pulse-width demodulation signal (low duty cycle). The first voltage stabilizing circuit 2409 is electrically connected to the first voltage reducing circuit 2402 and the microprocessor 230. The first voltage stabilizing circuit 2409 receives the first power signal transmitted by the first voltage reducing circuit 2402 and the first power control signal transmitted by the microprocessor 230, and the first voltage stabilizing circuit 2409 generates a first voltage stabilizing signal according to the first power signal and the first power control signal.
First MOS transistor 2410 is electrically connected to first MOS driver 2408, first voltage regulator circuit 2409, and first resonant circuit 2404, for example, first MOS transistor 2410 may comprise a plurality of MOS transistors connected in series or in parallel. First MOS transistor 2410 receives the first driving signal transmitted by first MOS driver 2408 and the first voltage stabilizing signal transmitted by first voltage stabilizing circuit 2409. The first MOS transistor 2410 generates a first amplified signal according to the first driving signal and the first voltage stabilizing signal and transmits the first amplified signal to the first resonant circuit 2404.
The first temperature detection circuit 2411 is electrically connected to the first resonant circuit 2404 and the microprocessor 230, the first temperature detection circuit 2411 is used for detecting a first temperature signal of the first resonant circuit 2404 and transmitting the first temperature signal to the microprocessor 230, and the microprocessor 230 dynamically adjusts the first pulse bandwidth demodulation signal according to the first temperature signal. For example, when the first temperature signal exceeds the temperature threshold, the microprocessor 230 decreases the duty cycle of the pulse bandwidth demodulation signal, so that the first resonant circuit 2404 sends a low-power wireless charging signal to the first actuator through the coil, and the first resonant circuit 2404 can achieve the cooling effect.
The second resonant circuit 2504 is configured to receive second data information transmitted by the second mobile device through the coil. The second resonant circuit 2504 is configured to transmit a second wireless charging signal to a second mobile device through the coil. The second voltage detection circuit 2505 is electrically connected to the second resonant circuit 2504, and the second voltage detection circuit 2505 generates second voltage detection information according to the second data information. The second current detecting circuit 2506 is electrically connected to the second resonant circuit 2504. The second current detection circuit 2506 generates second current detection information from the second data information. The second information decoding circuit 2507 is electrically connected to the second voltage detecting circuit 2505, the second current detecting circuit 2506 and the microprocessor 230. The second information decoding circuit 2507 receives the second voltage detection information transmitted from the second voltage detection circuit 2505 and the second current detection information transmitted from the second current detection circuit 2506 to generate second decoded information, and the microprocessor 230 generates a second pulse bandwidth demodulation signal through an information decoding process according to the second decoded information.
The second MOS driver 2508 is electrically connected to the microprocessor 230. The second MOS driver 2508 receives the second pulse bandwidth demodulation signal transmitted from the microprocessor 230. The second MOS driver 2508 generates a second driving signal according to the second pulse bandwidth demodulation signal. The second voltage stabilizing circuit 2509 is electrically connected to the second voltage reducing circuit 2502, the second output voltage detecting circuit 2503 and the microprocessor 230. The second voltage stabilizing circuit 2509 receives the second power signal transmitted from the second voltage reducing circuit 2502 and the second power control signal transmitted from the microprocessor 230. The second voltage stabilizing circuit 2509 generates a second voltage stabilizing signal according to the second power signal and the second power control signal.
The second MOS transistor 2510 is electrically connected to the second MOS driver 2508, the second voltage stabilizing circuit 2509, and the second resonant circuit 2504, and the second MOS transistor 2510 receives the second driving signal and the second voltage stabilizing signal of the second voltage stabilizing circuit 2509 transmitted by the second MOS driver 2508. The second MOS transistor generates a second amplified signal according to the second driving signal and the second voltage stabilizing signal, and transmits the second amplified signal to the second resonant circuit 2504. The second temperature detection circuit 2511 is electrically connected to the second resonant circuit 2504 and the microprocessor 250, the second temperature detection circuit 2511 is configured to detect a second temperature signal of the second resonant circuit 2504 and transmit the second temperature signal to the microprocessor 230, and the microprocessor 230 dynamically adjusts the second pulse bandwidth demodulation signal according to the second temperature signal.
Example 3
Referring to fig. 3, fig. 3 is a flowchart of a method for providing a wireless charging method according to embodiment 3 of the present invention. The wireless charging method is applied to a wireless charging device, and the wireless charging device is provided with a power input port, a microprocessor, an alternating current-direct current converter, a first coil driving module and a second coil driving module. The power input port is electrically connected with the AC-DC converter. The power input port is used for receiving alternating current power. The ac-dc converter converts an ac power source into a dc power source. The wireless charging method comprises the following steps:
s301, receiving first data information transmitted by a first mobile device by a first coil driving module;
s302, performing information decoding processing on the first data information by a first coil driving module;
S303, generating a first pulse bandwidth demodulation signal according to the first data information by the microprocessor;
S305, charging the first mobile device by the first coil driving module according to the first pulse bandwidth demodulation signal;
s307, receiving second data information transmitted by a second mobile device by a second coil driving module;
s308, performing information decoding processing on the second data information by a second coil driving module;
s309, generating a second pulse bandwidth demodulation signal according to the second data information by the microprocessor;
and S311, the second coil driving module charges the second mobile device according to the second pulse bandwidth demodulation signal.
The microprocessor performs anti-interference on the first coil driving module and the second coil driving module according to the first data information after the information decoding processing and the second data information after the information decoding processing.
According to the wireless charging device and the wireless charging method, the single microprocessor independently charges the first electronic device and the second electronic device through the first coil driving module and the second coil driving module, so that the manufacturing cost of the wireless charging device can be reduced. In addition, the first pulse bandwidth demodulation signal is independent of the second pulse bandwidth demodulation signal, so that independent charging between the first electronic device and the second electronic device can be realized, and information interference between the first electronic device and the second electronic device is effectively prevented. The microprocessor can dynamically adjust the pulse bandwidth demodulation signal according to the temperature signal to increase the functionality of the wireless charging device.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention are clearly and completely described above in conjunction with the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Accordingly, the above detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Claims (7)
1. A wireless charging device having a power input port electrically connected to an ac-dc converter, the power input port configured to receive an ac power, the ac-dc converter converting the ac power to a dc power, the wireless charging device comprising:
the microprocessor is electrically connected with the alternating current-direct current converter;
The first coil driving module is electrically connected with the microprocessor, and is used for receiving first data information transmitted by a first mobile device, performing information decoding processing on the first data information by the first coil driving module, generating a first pulse bandwidth demodulation signal by the microprocessor according to the first data information, and charging the first mobile device by the first coil driving module according to the first pulse bandwidth demodulation signal;
The second coil driving module is electrically connected with the microprocessor, and is used for receiving second data information transmitted by a second mobile device, performing information decoding processing on the second data information, generating a second pulse bandwidth demodulation signal according to the second data information, and charging the second mobile device according to the second pulse bandwidth demodulation signal;
the microprocessor performs anti-interference on the first coil driving module and the second coil driving module according to the first data information after the information decoding processing and the second data information after the information decoding processing;
The first pulse bandwidth demodulation signal generated by the first data information after the information decoding process is independent of the second pulse bandwidth demodulation signal generated by the second data information after the information decoding process;
The first coil drive module includes:
the first input voltage detection circuit is electrically connected with the alternating current-direct current converter;
the first voltage reduction circuit is electrically connected with the first input voltage detection circuit, and is used for detecting the input voltage of the first voltage reduction circuit and generating a first power signal;
The first output voltage detection circuit is electrically connected with the first voltage reduction circuit and the microprocessor and is used for detecting the output voltage of the first voltage reduction circuit;
A first resonant circuit configured to receive the first data information transmitted by the first mobile device, the first resonant circuit configured to transmit a first wireless charging signal to the first mobile device;
the first voltage detection circuit is electrically connected with the first resonant circuit and generates first voltage detection information according to the first data information;
the first current detection circuit is electrically connected with the first resonant circuit and generates first current detection information according to the first data information;
The first information decoding circuit is electrically connected with the first voltage detection circuit, the first current detection circuit and the microprocessor, and is used for receiving the first voltage detection information transmitted by the first voltage detection circuit and the first current detection information transmitted by the first current detection circuit to generate first decoding information, and the microprocessor is used for generating the first pulse bandwidth demodulation signal through information decoding according to the first decoding information, wherein the information decoding is used for removing noise of the first voltage detection information and the first current detection information;
the first MOS driver is electrically connected with the microprocessor, receives the first pulse bandwidth demodulation signal transmitted by the microprocessor, and generates a first driving signal according to the first pulse bandwidth demodulation signal;
The first voltage stabilizing circuit is electrically connected with the first voltage reducing circuit and the microprocessor, and is used for receiving the first power signal transmitted by the first voltage reducing circuit and the first power control signal transmitted by the microprocessor, and generating a first voltage stabilizing signal according to the first power signal and the first power control signal;
The first MOS tube is electrically connected with the first MOS driver, the first voltage stabilizing circuit and the first resonant circuit, receives the first driving signal transmitted by the first MOS driver and the first voltage stabilizing signal transmitted by the first voltage stabilizing circuit, and generates a first amplifying signal according to the first driving signal and the first voltage stabilizing signal and transmits the first amplifying signal to the first resonant circuit.
2. The wireless charging device of claim 1, wherein the first coil drive module further comprises:
the first temperature detection circuit is electrically connected with the first resonant circuit and the microprocessor, and is used for detecting a first temperature signal of the first resonant circuit and transmitting the first temperature signal to the microprocessor, and the microprocessor dynamically adjusts the first pulse bandwidth demodulation signal according to the first temperature signal.
3. The wireless charging device of claim 1, wherein the wireless charging device comprises:
The light-emitting module is electrically connected with the microprocessor, the microprocessor dynamically adjusts the first light-emitting mode of the light-emitting module according to the first charging mode of the first coil driving module, and the microprocessor dynamically adjusts the second light-emitting mode of the light-emitting module according to the second charging mode of the second coil driving module.
4. The wireless charging device of claim 1, wherein the second coil drive module comprises:
The second input voltage detection circuit is electrically connected with the alternating current-direct current converter and the microprocessor;
The second voltage reduction circuit is electrically connected with the second input voltage detection circuit, and is used for detecting the input voltage of the second voltage reduction circuit and generating a second power signal;
The second output voltage detection circuit is electrically connected with the second voltage reduction circuit and the microprocessor and is used for detecting the output voltage of the second voltage reduction circuit.
5. The wireless charging device of claim 4, wherein the second coil drive module further comprises:
the second resonance circuit is used for receiving second data information transmitted by the second mobile device and transmitting a second wireless charging signal to the second mobile device;
the second voltage detection circuit is electrically connected with the second resonance circuit and generates second voltage detection information according to the second data information;
The second current detection circuit is electrically connected with the second resonance circuit and generates second current detection information according to the second data information;
the second information decoding circuit is electrically connected with the second voltage detection circuit, the second current detection circuit and the microprocessor, and is used for receiving the second voltage detection information transmitted by the second voltage detection circuit and the second current detection information transmitted by the second current detection circuit to generate second information decoding information, and the microprocessor is used for generating the second pulse bandwidth demodulation signal through information decoding processing according to the second information decoding information, wherein the information decoding processing is used for removing noise of the second voltage detection information and the second current detection information;
The second MOS driver is electrically connected with the microprocessor, receives the second pulse bandwidth demodulation signal transmitted by the microprocessor, and generates a second driving signal according to the second pulse bandwidth demodulation signal;
The second voltage stabilizing circuit is electrically connected with the second voltage reducing circuit and the microprocessor, and is used for receiving the second power signal transmitted by the second voltage reducing circuit and the second power control signal transmitted by the microprocessor, and generating a second voltage stabilizing signal according to the second power signal and the second power control signal;
The second MOS tube is electrically connected with the second MOS driver, the second voltage stabilizing circuit and the second resonant circuit, receives the second driving signal transmitted by the second MOS driver and the second voltage stabilizing signal transmitted by the second voltage stabilizing circuit, and generates a second amplifying signal according to the second driving signal and the second voltage stabilizing signal and transmits the second amplifying signal to the second resonant circuit.
6. The wireless charging device of claim 5, wherein the second coil drive module further comprises:
The second temperature detection circuit is electrically connected with the second resonance circuit and the microprocessor, and is used for detecting a second temperature signal of the second resonance circuit and transmitting the second temperature signal to the microprocessor, and the microprocessor dynamically adjusts the second pulse bandwidth demodulation signal according to the second temperature signal.
7. The utility model provides a wireless charging method which is characterized in that is applied to a wireless charging device, the wireless charging device has power input port, alternating current-direct current converter, microprocessor, first coil drive module and second coil drive module, power input port electric connection alternating current-direct current converter, power input port is used for receiving alternating current power, alternating current-direct current converter is with alternating current power conversion direct current power, wireless charging method includes:
receiving, by the first coil drive module, first data information transmitted by a first mobile device;
the first coil driving module performs information decoding processing on the first data information;
generating, by the microprocessor, a first pulse bandwidth demodulation signal based on the first data information;
charging the first moving device by the first coil drive module according to the first pulse bandwidth demodulation signal;
receiving, by the second coil drive module, second data information transmitted by a second mobile device;
performing information decoding processing on the second data information by the second coil driving module;
Generating, by the microprocessor, a second pulse bandwidth demodulation signal based on the second data information;
charging the second mobile device by the second coil drive module according to the second pulse bandwidth demodulation signal;
the microprocessor performs anti-interference on the first coil driving module and the second coil driving module according to the first data information after the information decoding processing and the second data information after the information decoding processing.
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| KR101253669B1 (en) * | 2006-10-10 | 2013-04-11 | 엘에스전선 주식회사 | A contact-less charger |
| CN201663492U (en) * | 2010-03-19 | 2010-12-01 | 富达通科技股份有限公司 | Wireless control device of driving structure |
| TWI408861B (en) * | 2010-04-26 | 2013-09-11 | Fu Da Tong Technology Co Ltd | Method of data transmission to induction power supply |
| TWI552529B (en) * | 2015-02-04 | 2016-10-01 | 茂達電子股份有限公司 | Demodulation circuit and wireless charging device having the same |
| CN104917266B (en) * | 2015-07-10 | 2017-04-12 | 李文华 | Emergency starting power supply with multi-gear wireless charge function for automobile |
| KR101835034B1 (en) * | 2016-04-07 | 2018-03-08 | 한국과학기술원 | Wireless and simultaneous power and data transmission method for sensor for monitoring state of structure and system for the same |
| CN106160086B (en) * | 2016-07-14 | 2019-10-15 | 深圳市禾家欢科技有限公司 | A kind of wireless charging output device |
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