A wireless charging method and system

[0043] Example 1

[0044] According to an embodiment of the present invention, an embodiment of a wireless charging method is also provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and, although The logical sequence is shown in the flowchart, but in some cases, the steps shown or described may be performed in a different order than here.

[0045] The method embodiment provided in Embodiment 1 of the present application may be executed in a mobile terminal, a computer terminal or a similar computing device. Take running on a computer terminal as an example, figure 1 It is a hardware structure block diagram of a computer terminal of a wireless charging method according to an embodiment of the present invention. Such as figure 1 As shown, the computer terminal 10 may include one or more (only one is shown in the figure) processor 102 (the processor 102 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA) for A memory 104 for storing data, and a transmission device 106 for communication functions. Those of ordinary skill in the art can understand, figure 1 The structure shown is only for illustration, and it does not limit the structure of the above electronic device. For example, the computer terminal 10 may also include figure 1 More or fewer components shown in the figure 1 Different configurations are shown.

[0046] The memory 104 can be used to store software programs and modules of application software, such as program instructions/modules corresponding to the method for processing page content in the embodiment of the present invention. The processor 102 executes the software programs and modules stored in the memory 104 by running Various functional applications and data processing, namely the realization of the above-mentioned application vulnerability detection method. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely provided with respect to the processor 102, and these remote memories may be connected to the computer terminal 10 via a network. Examples of the aforementioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0047] The transmission device 106 is used to receive or send data via a network. The above-mentioned specific examples of the network may include a wireless network provided by the communication provider of the computer terminal 10. In one example, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices through a base station to communicate with the Internet. In one example, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet in a wireless manner.

[0048] In the above operating environment, this application provides figure 2 The wireless charging method shown. figure 2 Is a flowchart of the wireless charging method according to Embodiment 1 of the present invention, such as figure 2 As shown, including the following steps:

[0049] Step S202, the energy receiving end determines the required power of the load;

[0050] Step S204, the energy receiving end sends an instruction message to the energy transmitting end, where the instruction message is used to indicate the determined required power of the load;

[0051] Step S206, the energy receiving terminal receives the charging energy transmitted by the energy transmitting terminal, where the charging energy transmitted by the energy transmitting terminal is the charging energy adjusted by the energy transmitting terminal according to the indication message, and the transmission channel of the indication message and the transmission channel of the charging energy are independent of each other .

[0052] Through the above technical solution, the energy receiving end determines the required power of the load, and then sends an indication message to the energy transmitting end, where the indication message is used to indicate the determined required power of the load, and the energy receiving end receives the charging energy transmitted by the energy transmitting end, where The charging energy emitted by the energy transmitter is the charging energy adjusted by the energy transmitter according to the indication message, and the transmission channel of the indication message and the transmission channel of the charging energy are independent of each other. It solves the problem in the related technology that the energy transmitting end of the wireless charger cannot effectively adjust the energy output according to the power change of the load, thereby avoiding the mutual interference of wireless signal transmission and energy transmission between the energy transmitting end and the energy receiving end, and making the wireless The charger can flexibly adjust the output power according to the power demand of the load, which improves the charging efficiency.

[0053] It should be noted that the load mentioned in the embodiment of the present invention may be any load equipped with a wireless charger, such as a mobile phone, a pad, a notebook computer, a shaver, and a desk lamp, which is not limited herein. In the embodiment of the present invention, the indication message (equivalent to a wireless signal) can be transmitted through the 2.4G frequency band or through the electromagnetic coil, and the charging energy (equivalent to current) can be transmitted through the electromagnetic coil to ensure the transmission and energy of the instruction message The transmissions are independent of each other and do not interfere with each other. Of course, the transmission channel and the energy transmission channel of the indication message may also be any other available channels, which is not limited in this embodiment.

[0054] In an optional example of the embodiment of the present invention, after the above step S206, the method further includes: the energy receiving end performs rectification and filtering processing and/or step-up/down processing on the charging energy, and provides the charging energy to the load.

[0055] In an optional example of the embodiment of the present invention, after the above step S206, the method further includes: after the energy receiving end performs rectification, filtering and buck-boosting processing on the charging energy, power is supplied to the functional circuit inside the energy receiving end. It should be noted that the energy receiving end may include multiple functional circuits, such as a control circuit, a voltage sampling circuit, etc., and each functional circuit needs a power supply circuit to provide power to ensure normal operation.

[0056] In order to better understand the foregoing technical solutions of the embodiments of the present invention, this embodiment also provides a process of describing the wireless charging method from the perspective of the energy transmitting end. image 3 Is another flowchart of the wireless charging method according to Embodiment 1 of the present invention, such as image 3 As shown, including the following steps:

[0057] Step S302, the energy transmitting end receives the instruction message sent by the energy receiving end, where the instruction message is used to indicate the required power of the load;

[0058] Step S304, the energy transmitter adjusts the charging energy to be transmitted according to the instruction message;

[0059] In step S306, the energy transmitting terminal transmits the adjusted charging energy to the energy receiving terminal, where the transmission channel of the indication message and the transmission channel of the charging energy are independent of each other.

[0060] Through the above technical solution, the energy transmitting end receives the instruction message sent by the energy receiving end, where the instruction message is used to indicate the required power of the load, and then the energy transmitting end adjusts the charging energy to be transmitted according to the instruction message, and the energy transmitting end adjusts the adjusted The charging energy is transmitted to the energy receiving end, wherein the transmission channel of the indication message and the transmission channel of the charging energy are independent of each other. It solves the problem in the related technology that the energy transmitting end of the wireless charger cannot effectively adjust the energy output according to the power change of the load, so that the wireless charger can flexibly adjust the output power according to the power demand of the load, thereby improving the charging efficiency.

[0061] In an optional example of the embodiment of the present invention, before the above step S304, the method further includes: the energy transmitter compares the output power of the current charging energy with the required power of the load carried in the instruction message, and determines whether it is in accordance with the instruction The message regulates the charging energy. If the current output power of the charging energy is inconsistent with the required power of the load carried in the indication message, the energy transmitter determines to adjust the charging power according to the indication message. If the current output power of the charging energy is consistent with the magnitude of the required power of the load carried in the indication message, the energy transmitter determines that the charging power is not adjusted according to the indication message.

[0062] Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus the necessary general hardware platform, of course, it can also be implemented by hardware, but in many cases the former is Better implementation. Based on this understanding, the technical solution of the present invention essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes several instructions to make a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) execute the method of each embodiment of the present invention.

[0063] Example 2

[0064] Figure 4 It is a structural block diagram of a wireless charging system according to Embodiment 2 of the present invention. Such as Figure 4 As shown, in the embodiment of the present invention, a wireless charging system is also provided, including:

[0065] The energy receiving terminal 40 is connected to the load 42, and is used to determine the required power of the load 42 and send an indication message to the energy transmitting terminal, where the indication message is used to indicate the determined required power of the load;

[0066] The energy transmitting terminal 44 is used for adjusting the charging energy according to the indication message and transmitting the adjusted charging energy to the energy receiving terminal 40, wherein the transmission channel of the indication message and the transmission channel of the charging energy are independent of each other.

[0067] Through the above system, the energy receiving end determines the required power of the load and sends an indication message indicating the determined required power of the load to the energy transmitting end. The energy transmitting end adjusts the charging energy according to the indication message and transmits the adjusted charging energy to the energy The receiving end transmits to the corresponding load via the energy receiving end, where the transmission channel of the indication message and the transmission channel of the charging energy are independent of each other. The above technical solution solves the problem in related technologies that the energy transmitting end of the wireless charger cannot effectively adjust the energy output according to the power change of the load, thereby avoiding wireless signal transmission and energy transmission between the energy transmitting end and the energy receiving end Mutual interference allows the wireless charger to flexibly adjust the output power according to the power demand of the load, which improves the charging efficiency.

[0068] Figure 5 It is a structural block diagram of the middle energy receiving end of the wireless charging system according to Embodiment 2 of the present invention, such as Figure 5 As shown, in a preferred example, the energy receiving terminal 40 includes:

[0069] The first voltage sampling circuit 400 is used to determine the required power of the load 42;

[0070] The wireless signal transmitting circuit 402 is configured to send an instruction message to the energy transmitting terminal 44;

[0071] Wherein, the first voltage sampling circuit 400 and the wireless signal transmitting circuit 402 are respectively connected to the first control circuit 404.

[0072] Preferably, the energy receiving terminal 40 further includes:

[0073] The first LC oscillating circuit 406 is used to receive the charging energy emitted by the energy transmitting terminal;

[0074] The first rectifying and filtering circuit 408 is connected to the first LC oscillating circuit 406 for rectifying and filtering the charging energy;

[0075] The buck-boost circuit 4010 is respectively connected to the first rectification filter circuit 408, the first control circuit 404 and the load 42 for transmitting charging energy to the load 42.

[0076] It should be noted that each functional circuit inside the energy receiving end needs a power supply circuit to provide electrical energy to ensure normal operation. The first rectification filter circuit 408 is connected to the first power conversion circuit 4012 and the second power conversion circuit 4014. The first power conversion circuit 4012 is connected to the first control circuit 404 for supplying power to the first power conversion circuit 4012, and the second power conversion circuit 4014 is used to power the wireless signal transmission circuit 402. The step-up and step-down circuit involved in the embodiment of the present invention may be a DCDC conversion circuit, which is used to perform rise and fall processing on the voltage.

[0077] Image 6 It is a structural block diagram of the mid-energy transmitting end of the wireless charging system according to Embodiment 2 of the present invention, such as Image 6 As shown, in a preferred example, the energy transmitting terminal 44 includes: a second control circuit 440, a driving circuit 442, and an inverter circuit 444. The second control circuit 440 sends out a control signal, which is amplified by the driving circuit 442 to input The inverter circuit 444 performs inverter control.

[0078] It should be noted that the inverter circuit involved in the embodiment of the present invention may include one or more of a full-bridge inverter circuit, a half-bridge inverter circuit, and a single-tube inverter circuit, which is not limited in this embodiment. Regarding the adjustment of the charging energy by the energy transmitting terminal, it can be realized by adjusting the frequency of the inverter circuit, or by adjusting the frequency of the driving circuit. Among them, it is mainly to adjust the frequency or duty ratio of the switching tube (MOS tube). Of course, it can also be adjusted by other similar means, which is not limited in the embodiment of the present invention.

[0079] Preferably, the energy transmitting terminal 44 further includes: a second LC oscillating circuit 446 connected to the inverter circuit 444 for transmitting charging energy; a second voltage sampling circuit 448 connected to the second LC oscillating circuit 446 and the second control circuit 440 respectively , Used to determine the current charging energy of the energy transmitting terminal; the wireless signal receiving circuit 4410, connected to the second control circuit 440, for receiving the instruction message sent by the energy receiving terminal, and sending the instruction message to the second control circuit 440.

[0080] Preferably, the energy transmitting terminal further includes: a second rectifying and filtering circuit 4412, respectively connected to the constant voltage power supply 4414 and the inverter circuit 444, for rectifying and filtering the energy from the constant voltage power supply 4414, and sending the energy to the inverter Circuit 444.

[0081] It should be noted that each functional circuit inside the energy receiving end needs a power supply circuit to provide electrical energy to ensure normal operation. The second rectification filter circuit 4412 is respectively connected to the third power conversion circuit 4416, the fourth power conversion circuit 4418, and the fifth power conversion circuit 4420. The third power conversion circuit 4416 supplies power to the drive circuit 442, and the fourth power conversion circuit 4418 Power is supplied to the second control circuit 440, and the fifth power conversion circuit 4420 is supplied to the wireless signal receiving circuit 4410.

[0082] The constant voltage power supply 4414 can be a 220V DC stabilized power supply, which outputs a stable DC voltage. The DC voltage passes through the rectifier filter circuit 4412 (which can be a rectifier circuit and an EMI filter circuit) to rectify the alternating current into a direct current, filter out noise, and then input To the inverter circuit 444 (also called a full-bridge inverter circuit), the function of the inverter circuit 444 is to convert the input direct current into alternating current, and the inverter circuit 444 outputs high frequency alternating current to the second LC resonance circuit 446. The second LC resonance circuit 446 emits energy in the form of electromagnetic waves through the air.

[0083] The second control circuit 440 sends a control signal to be amplified by the drive circuit 442, and then is input to the switch tube of the inverter circuit 444 for inverter control.

[0084] The second voltage sampling circuit 448 samples the voltage signal from the second voltage sampling circuit 448, and then inputs the voltage signal to the second control circuit 440 after the third rectification filter circuit 4422 and AD conversion.

[0085] The wireless signal receiving circuit 4410 receives the signal transmitted from the energy receiving end, and then feeds it back to the second control circuit 440. The second control circuit 440 adjusts the operating frequency of the switching tube according to the feedback signal, so as to adjust the transmission energy to achieve The purpose of voltage stabilization.

[0086] The first LC oscillating circuit 406 is placed in the electromagnetic field at the energy receiving end. According to the principle of electromagnetic induction, the current will be induced. After rectification and filtering, it enters the buck-boost circuit 4010 (which can be a DCDC buck-boost circuit). Perform a step-down process, and then output voltage to supply power to the load 42.

[0087] The first power conversion circuit 4012 converts the input DC voltage into a low voltage, and supplies power to the first control circuit 404

[0088] The first voltage sampling circuit 400 obtains a signal from the first rectifying and filtering circuit 408, and then inputs it to the first control circuit 404 through AD conversion, and the first control circuit 404 transmits the information that needs to be adjusted through the wireless signal transmission circuit 402.

[0089] The sequence numbers of the foregoing embodiments of the present invention are only for description, and do not represent the superiority of the embodiments.