Wireless electric energy transmission system, configuration method thereof, electronic equipment and storage medium

Abstract

The invention relates to a wireless electric energy transmission system, a configuration method thereof, electronic equipment and a storage medium. The method comprises the following steps: acquiring a target equivalent circuit of the wireless power transmission system; acquiring working parameter data of the target equivalent circuit; determining a target detuning rate of the wireless power transmission system according to the working parameter data; and determining configuration data of each electrical device in the target equivalent circuit according to the target detuning rate. According to the embodiment, the wireless electric energy transmission system can stably transmit wireless electric energy, the charging efficiency of the receiving subsystem is ensured, and the charging experience is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of circuit technologies, and in particular, to a wireless power transmission system, a configuration method thereof, an electronic device, and a storage medium. Background Art

[0002] As the size of electronic devices is getting larger and larger, their standby time is getting shorter and shorter. Therefore, the charging efficiency of electronic devices has also attracted the attention of users. Taking wireless charging as an example, users usually use electronic devices during the charging process, resulting in changes in the distance between the electronic device and the charging device and spatial rotation of the electronic device, etc., which causes unstable wireless power transmission and reduces the charging experience. Summary of the Invention

[0003] The present disclosure provides a wireless power transmission system, a configuration method thereof, an electronic device, and a storage medium to solve the deficiencies of the related technologies.

[0004] According to a first aspect of an embodiment of the present disclosure, a wireless power transmission system is provided, including: a three-phase transmitting subsystem and a receiving subsystem; the three-phase transmitting subsystem includes a transmitting coil, and the receiving subsystem includes a receiving coil;

[0005] When the distance and / or rotation angle between the receiving coil and the transmitting coil changes, the receiving subsystem receives wireless power with a power volatility less than or equal to a preset volatility.

[0006] Optionally, each phase transmitting subsystem in the three-phase transmitting subsystem includes an inverter module and a multi-frequency compensation transmitting module; the inverter module is electrically connected to a power supply and the multi-frequency compensation transmitting module respectively; the multi-frequency compensation transmitting module is electrically connected to the transmitting coil;

[0007] The inverter module is configured to convert the power supply voltage into a square wave voltage including a harmonic voltage component;

[0008] The multi-frequency compensation transmitting module is configured to select the fundamental power and harmonic voltages of at least one frequency in the square wave voltage and output them to the transmitting coil;

[0009] The transmitting coil is configured to generate a transmitting current matching the fundamental power and the harmonic power, and radiate an electromagnetic wave matching the transmitting current.

[0010] Optionally, the multi-frequency compensation transmitting module includes at least one series capacitor, at least one parallel inductor, and at least one parallel capacitor;

[0011] The at least one series capacitor is connected in series with the at least one parallel inductor and then electrically connected to the inverter module and the transmitting coil respectively; each capacitor in the at least one parallel capacitor is connected in parallel with each inductor in the at least one parallel inductor.

[0012] Optionally, the transmitting coils of each phase transmitting subsystem in the three-phase transmitting subsystem are arranged perpendicular to each other in pairs.

[0013] Optionally, the transmitting coil is a circular coil or a square coil.

[0014] Optionally, the receiving subsystem includes a multi-frequency compensation receiving module; the multi-frequency compensation receiving module is electrically connected to the receiving coil and the load respectively;

[0015] The receiving coil is used to generate an induced voltage and an induced current according to the induced electromagnetic wave;

[0016] The multi-frequency compensation receiving module is used to select the fundamental wave induced power and the harmonic induced power of at least one frequency of the induced voltage and supply them to the load.

[0017] Optionally, the multi-frequency compensation receiving module includes at least one series capacitor, at least one parallel inductor and at least one parallel capacitor;

[0018] The at least one series capacitor is connected in series with the at least one parallel inductor and then electrically connected to the receiving coil; each capacitor in the at least one parallel capacitor is connected in parallel with each inductor in the at least one parallel inductor.

[0019] According to the second aspect of the embodiments of the present disclosure, a wireless power three-phase transmitting subsystem is provided. Each phase transmitting subsystem in the three-phase transmitting subsystem includes an inverter module and a multi-frequency compensation transmitting module; the inverter module is electrically connected to the power supply and the multi-frequency compensation transmitting module respectively; the multi-frequency compensation transmitting module is electrically connected to the transmitting coil;

[0020] The inverter module is used to convert the power supply voltage into a square wave voltage including a harmonic power component;

[0021] The multi-frequency compensation transmitting module is used to select the fundamental wave power and the harmonic power of at least one frequency in the square wave voltage and output them to the transmitting coil;

[0022] The transmitting coil is used to generate a transmitting current matching the fundamental wave power and the harmonic power, and radiate an electromagnetic wave matching the transmitting current.

[0023] Optionally, the multi-frequency compensation transmitting module includes at least one series capacitor, at least one parallel inductor and at least one parallel capacitor;

[0024] The at least one series capacitor is connected in series with the at least one parallel inductor and then electrically connected to the inverter module and the transmitting coil respectively; each capacitor in the at least one parallel capacitor is connected in parallel with each inductor in the at least one parallel inductor.

[0025] Optionally, the transmitting coils of each phase transmitting subsystem in the three-phase transmitting subsystem are arranged perpendicular to each other in pairs, and the transmitting coil is a circular coil or a square coil.

[0026] According to a third aspect of the embodiments of the present disclosure, there is provided a configuration method for a wireless power transmission system, including:

[0027] Obtain the target equivalent circuit of the wireless power transmission system;

[0028] Obtain the working parameter data of the target equivalent circuit;

[0029] Determine the target detuning rate of the wireless power transmission system according to the working parameter data;

[0030] The target detuning rate represents that the power volatility of the output power of the wireless power transmission system at each frequency and the target output power is the smallest;

[0031] Determine the configuration data of each electrical device in the target equivalent circuit according to the target detuning rate.

[0032] Optionally, the working parameter data includes at least one of the following: the mutual inductance value range of the mutual inductance between the transmitting coil and the receiving coil in the wireless power transmission system, the target output power and power volatility of the three-phase transmitting subsystem in the wireless power transmission system; the power volatility refers to the offset ratio of the output power of the three-phase transmitting subsystem and the target output power.

[0033] Optionally, determining the target detuning rate of the wireless power transmission system according to the working parameter data includes:

[0034] Determine the curve combination of the fundamental power curve and the harmonic power curves at at least one frequency according to the target output power and the power volatility; the fundamental power curve is used to characterize the mapping relationship between the fundamental power of the target output power and the mutual inductance value, and the harmonic power curve is used to characterize the mapping relationship between the harmonic power of the target output power and the mutual inductance value;

[0035] Determine the multi-frequency detuning rate of the wireless power transmission system according to each curve combination, and obtain the value range of the multi-frequency detuning rate, where the multi-frequency detuning rate is used to characterize the impedance characteristics of the wireless power transmission system when operating at each frequency;

[0036] Obtain the power volatility corresponding to each group of candidate multi - frequency detuning ratios within the value range of the multi - frequency detuning ratio;

[0037] Determine the candidate multi - frequency detuning ratio with the minimum power volatility as the target detuning ratio.

[0038] Optionally, determine the curve combination of the fundamental - wave power curve and the harmonic - wave power curves of at least one frequency according to the target output power and the power volatility, including:

[0039] Determine the target power curve according to the target output power and the power volatility;

[0040] In response to adjusting the distance between the transmitting coil and the receiving coil and / or adjusting the rotation angle of the receiving coil relative to the transmitting coil, determine the fundamental - wave power curve of the fundamental - wave power at the distance and / or the rotation angle;

[0041] In response to determining the fundamental - wave power curve of the fundamental - wave power, determine at least one harmonic - wave power curve that matches the fundamental - wave power curve, and obtain the curve combination of the fundamental - wave power curve of the fundamental - wave power and the at least one harmonic - wave power curve.

[0042] Optionally, determine the multi - frequency detuning ratio of the wireless power transfer system according to each curve combination to obtain the value range of the multi - frequency detuning ratio, including:

[0043] In response to sequentially selecting each curve combination, obtain the value of the multi - frequency detuning ratio of the wireless power transfer system in each curve combination;

[0044] Determine that the values of the multi - frequency detuning ratios of all curve combinations constitute the value range of the multi - frequency detuning ratio.

[0045] Optionally, obtain the power volatility corresponding to each group of candidate multi - frequency detuning ratios within the value range of the multi - frequency detuning ratio, including:

[0046] In response to sequentially selecting each group of candidate multi - frequency detuning ratios within the value range of the multi - frequency detuning ratio, obtain the candidate fundamental - wave power curve and the candidate harmonic - wave power curve corresponding to each group of candidate multi - frequency detuning ratios;

[0047] Superimpose the candidate fundamental - wave power curve and the candidate harmonic - wave power curve to obtain a candidate output curve;

[0048] Determine the power volatility according to the candidate output curve and the target output power as the power volatility corresponding to each group of candidate multi - frequency detuning ratios.

[0049] Optionally, determine the configuration data of each electrical component in the target equivalent circuit according to the target detuning ratio, including:

[0050] Obtain the self - inductance values of the transmitting coil and the receiving coil of the wireless power transfer system respectively;

[0051] Determine the self - inductance value of the parallel inductor in the three - phase transmitting subsystem of the wireless power transfer system according to the self - inductance value of the transmitting coil, and determine the self - inductance value of the parallel inductor in the receiving subsystem of the wireless power transfer system according to the self - inductance value of the receiving coil;

[0052] Determine the capacitance values of the series capacitor and the parallel capacitor in the three - phase transmitting subsystem according to the target detuning rate, the self - inductance value of the transmitting coil, and the self - inductance value of the parallel inductor in the three - phase transmitting subsystem, and determine the capacitance values of the series capacitor and the parallel capacitor in the three - phase transmitting subsystem according to the target detuning rate, the self - inductance value of the receiving coil, and the self - inductance value of the parallel inductor in the receiving subsystem;

[0053] Determine the self - inductance value of the parallel inductor, the self - inductance value of the series inductor, the capacitance value of the series capacitor, and the capacitance value of the parallel capacitor in the three - phase transmitting subsystem, and the self - inductance value of the parallel inductor, the self - inductance value of the series inductor, the capacitance value of the series capacitor, and the capacitance value of the parallel capacitor in the receiving subsystem as the configuration data of each electrical component in the target equivalent circuit.

[0054] According to the fourth aspect of the embodiments of the present disclosure, a configuration device for a wireless power transfer system is provided, including:

[0055] An equivalent - circuit acquisition module, configured to acquire the target equivalent circuit of the wireless power transfer system;

[0056] A parameter - data acquisition module, configured to acquire the operating parameter data of the target equivalent circuit;

[0057] A detuning - rate acquisition module, configured to determine the target detuning rate of the wireless power transfer system according to the operating parameter data; the target detuning rate represents that the power volatility of the output power of the wireless power transfer system at each frequency and the target output power is minimized;

[0058] A configuration - data acquisition module, configured to determine the configuration data of each electrical component in the target equivalent circuit according to the target detuning rate.

[0059] Optionally, the operating parameter data includes at least one of the following: the mutual - inductance value range of the mutual inductance between the transmitting coil and the receiving coil in the wireless power transfer system, the target output power and the power volatility of the three - phase transmitting subsystem in the wireless power transfer system; the power volatility refers to the offset ratio of the output power of the three - phase transmitting subsystem and the target output power.

[0060] Optionally, the detuning - rate acquisition module includes:

[0061] A curve combination determination sub-module, configured to determine a curve combination of a fundamental power curve and harmonic power curves of at least one frequency according to the target output power and the power volatility; the fundamental power curve is used to characterize the mapping relationship between the fundamental power of the target output power and the mutual inductance value, and the harmonic power curve is used to characterize the mapping relationship between the harmonic power of the target output power and the mutual inductance value;

[0062] A detuning rate acquisition and determination sub-module, configured to determine the multi-frequency detuning rate of the wireless power transmission system according to each curve combination, and obtain the value range of the multi-frequency detuning rate, where the multi-frequency detuning rate is used to characterize the impedance characteristics of the wireless power transmission system when operating at each frequency;

[0063] A volatility acquisition sub-module, configured to acquire the power volatility corresponding to each group of candidate multi-frequency detuning rates in the value range of the multi-frequency detuning rate;

[0064] A detuning rate determination sub-module, configured to determine the candidate multi-frequency detuning rate with the minimum power volatility as the target detuning rate.

[0065] Optionally, the curve combination determination sub-module includes:

[0066] A target curve determination unit, configured to determine a target power curve according to the target output power and the power volatility;

[0067] A fundamental wave curve determination unit, configured to determine the fundamental power curve of the fundamental power at the distance and / or the rotation angle in response to adjusting the distance between the transmitting coil and the receiving coil and / or adjusting the rotation angle of the receiving coil relative to the transmitting coil;

[0068] A curve combination determination unit, configured to determine at least one harmonic power curve that matches the fundamental power curve in response to determining the fundamental power curve of the fundamental power, and obtain a curve combination of the fundamental power curve of the fundamental power and the at least one harmonic power curve.

[0069] Optionally, the detuning rate acquisition and determination sub-module includes:

[0070] A detuning rate acquisition unit, configured to acquire the value of the multi-frequency detuning rate of the wireless power transmission system in each curve combination in response to sequentially selecting each curve combination;

[0071] A value range acquisition unit, configured to determine that the values of the multi-frequency detuning rates of all curve combinations constitute the value range of the multi-frequency detuning rate.

[0072] Optionally, the volatility acquisition sub-module includes:

[0073] A voltage curve acquisition unit, configured to obtain a candidate fundamental wave power curve and a candidate harmonic power curve corresponding to each group of candidate multi-frequency detuning rates in response to sequentially selecting each group of candidate multi-frequency detuning rates in the value range of the multi-frequency detuning rate;

[0074] A candidate curve acquisition unit, configured to superimpose the candidate fundamental wave power curve and the candidate harmonic power curve to obtain a candidate output curve;

[0075] A volatility acquisition unit, configured to determine a power volatility based on the candidate output curve and the target output power, and use it as the power volatility corresponding to each group of candidate multi-frequency detuning rates.

[0076] Optionally, the configuration data acquisition module includes:

[0077] An inductance of coil acquisition sub-module, configured to respectively obtain the self-inductance values of the transmitting coil and the receiving coil of the wireless power transmission system;

[0078] A first self-inductance acquisition sub-module, configured to determine the self-inductance value of the parallel inductance in the three-phase transmitting sub-system of the wireless power transmission system according to the self-inductance value of the transmitting coil;

[0079] A second self-inductance acquisition sub-module, configured to determine the self-inductance value of the parallel inductance in the receiving sub-system of the wireless power transmission system according to the self-inductance value of the receiving coil;

[0080] A first capacitance value acquisition sub-module, configured to determine the capacitance values of the series capacitor and the parallel capacitor in the three-phase transmitting sub-system according to the target detuning rate, the self-inductance value of the transmitting coil, and the self-inductance value of the parallel inductance in the three-phase transmitting sub-system;

[0081] A second capacitance value acquisition sub-module, configured to determine the capacitance values of the series capacitor and the parallel capacitor in the three-phase transmitting sub-system according to the target detuning rate, the self-inductance value of the receiving coil, and the self-inductance value of the parallel inductance in the receiving sub-system;

[0082] A configuration data determination sub-module, configured to determine the self-inductance value of the parallel inductance, the self-inductance value of the series inductance, the capacitance value of the series capacitor, and the capacitance value of the parallel capacitor in the three-phase transmitting sub-system, and the self-inductance value of the parallel inductance, the self-inductance value of the series inductance, the capacitance value of the series capacitor, and the capacitance value of the parallel capacitor in the receiving sub-system as the configuration data of each electrical component in the target equivalent circuit.

[0083] According to a fifth aspect of the embodiments of the present disclosure, there is provided a charging device, including a three-phase transmitting sub-system in the wireless power transmission system as described in the first aspect, and the configuration data of the electrical components in the three-phase transmitting sub-system is obtained by using the configuration method of the wireless power transmission system as described in any item of the second aspect.

[0084] According to a sixth aspect of the embodiments of the present disclosure, there is provided an electronic device, including a receiving subsystem in the wireless power transmission system as described in the first aspect, and configuration data of electrical components in the receiving subsystem is obtained by using the configuration method of the wireless power transmission system as described in any one of the third aspects.

[0085] According to a seventh aspect of the embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium, which can implement the method as described in any one of the third aspects when an executable computer program in the storage medium is executed by a processor.

[0086] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

[0087] As can be seen from the above embodiments, the wireless power transmission system provided by the embodiments of the present disclosure can obtain the target equivalent circuit of the wireless power transmission system; then, obtain the working parameter data of the target equivalent circuit; after that, determine the target detuning rate of the wireless power transmission system according to the working parameter data; the target detuning rate represents that the power fluctuation rate between the output power and the target output power of the wireless power transmission system when working at each frequency is the smallest; finally, determine the configuration data of each electrical component in the target equivalent circuit according to the target detuning rate. In this way, this embodiment can enable the wireless power transmission system to stably transmit wireless power, ensure the charging efficiency of the receiving subsystem, and is beneficial to improving the charging experience.

[0088] It should be understood that the above general description and subsequent detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0089] The accompanying drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure.

[0090] Figure 1 is a schematic structural diagram of a wireless power transmission system shown according to an exemplary embodiment.

[0091] Figure 2 is an equivalent circuit diagram of a wireless power transmission system shown according to an exemplary embodiment.

[0092] Figure 3 is a flowchart of a configuration method of a wireless power transmission system shown according to an exemplary embodiment.

[0093] Figure 4 is a schematic diagram of a mapping relationship between the distance and mutual inductance of a transmitting coil and a receiving coil shown according to an exemplary embodiment.

[0094] Figure 5 It is a schematic diagram showing the mapping relationship between the rotation angle and the mutual inductance of a receiving coil according to an exemplary embodiment.

[0095] Figure 6 It is a schematic diagram showing a target output power and a power volatility rate according to an exemplary embodiment.

[0096] Figure 7 It is a schematic diagram showing a general model of a wireless power transfer system according to an exemplary embodiment.

[0097] Figure 8 It is a schematic diagram showing a series - series (SS) circuit model based on a detuning rate according to an exemplary embodiment.

[0098] Figure 9 It is a block diagram showing a configuration device of a wireless power transfer system according to an exemplary embodiment.

[0099] Figure 10 It is a block diagram showing an electronic device according to an exemplary embodiment. Detailed implementation manners

[0100] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The exemplary embodiments described below do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices consistent with some aspects of the present disclosure as detailed in the appended claims. It should be noted that, without conflict, the features in the following embodiments and implementation manners can be combined with each other.

[0101] To solve the above - mentioned technical problems, the embodiments of the present disclosure provide a wireless power transfer system, its configuration method, an electronic device, and a storage medium, which are used to design a system that can stably output wireless power under different coil distances and rotation angles. Here, "stable" means that the power volatility rate between the output power and the target output power is less than or equal to a preset volatility threshold, or in other words, the output power tends to the target output power, so that the volatility between the output power and the target output power is as small as possible. In some examples, the above - mentioned power volatility rate is shown in Equation (1).

[0102]

[0103] In Equation (1), δ represents the power volatility rate, δ 0 represents the preset volatility threshold, P out represents the output power, and P rated represents the target output power.

[0104] See Figure 1 , a wireless power transmission system, including a three-phase transmitting subsystem 10 and a receiving subsystem 20. Among them, the three-phase transmitting subsystem 10 includes a transmitting coil 13, and the receiving subsystem 20 includes a receiving coil 21. When the distance between the receiving coil 21 and the transmitting coil 13 and / or the rotation angle of the receiving coil 21 changes, the three-phase transmitting subsystem 10 can output wireless power, and the receiving subsystem 20 can receive wireless power with a power fluctuation rate less than or equal to a preset fluctuation rate. In this way, this embodiment can enable the wireless power transmission system to stably transmit wireless power, ensure the charging efficiency of the receiving subsystem, and is beneficial to improving the charging experience.

[0105] See Figure 1 and Figure 2 , each phase transmitting subsystem in the three-phase (i.e., ABC phase) transmitting subsystem 10 includes an inverter module 11 and a multi-frequency compensation transmitting module 12; the inverter module 11 is electrically connected to the power supply Udc and the multi-frequency compensation transmitting module 12 respectively; the multi-frequency compensation transmitting module 12 is electrically connected to the transmitting coil 13.

[0106] The inverter module 11 is used to convert the power supply voltage into a square wave voltage containing harmonic voltage components;

[0107] The multi-frequency compensation transmitting module 12 is used to select the fundamental power and the harmonic power of at least one frequency in the square wave voltage and output them to the transmitting coil 13;

[0108] The transmitting coil 13 is used to generate a transmitting current matching the fundamental power and the harmonic power, and radiate an electromagnetic wave matching the transmitting current.

[0109] In an example, the above power supply can be a DC power supply, including a DC regulated hydraulic pressure or a storage battery, which is not limited here.

[0110] In an example, the inverter module 11 is used to generate a square wave voltage containing harmonic components, including at least one of the following: full-bridge inverter, half-bridge inverter, Class D or E power amplifier, etc., and the corresponding inverter module can be selected according to the specific scenario.

[0111] In an example, the multi-frequency compensation transmitting module 12 is a high-order LC network that selects multiple frequency currents, including at least one series LC detuning sub-network and at least one parallel LC detuning sub-network. See Figure 1 and Figure 2, the multi - frequency compensation transmitting module includes at least one series capacitor Cn (n = a, b, and c), at least one parallel inductor Lpn, and at least one parallel capacitor Cpn; the at least one series capacitor is connected in series with the at least one parallel inductor and then is electrically connected to the inverter module and the transmitting coil respectively; each capacitor in the at least one parallel capacitor is connected in parallel with each inductor in the at least one parallel inductor. Or, in each phase, the series capacitor Cn and the transmitting coil 13 form a series LC detuning sub - network, and the parallel inductor Lpn and the parallel capacitor Cpn form a parallel LC detuning sub - network.

[0112] It can be understood that each detuning sub - network is used to select currents of different frequencies, and its quantity is related to the multi - frequency detuning rate. Among them, the multi - frequency detuning rate is the ratio of the total impedance value of the inductor and capacitor in the multi - frequency compensation transmitting module 12 to the impedance value of the inductor, and its value range is (-∞, 1]. When the inductor and capacitor in the multi - frequency compensation transmitting module 12 are in resonance, the multi - frequency detuning rate is equal to 0; when the multi - frequency compensation transmitting module 12 is inductive, the multi - frequency detuning rate is greater than 0, and the maximum value is 1; when the multi - frequency compensation transmitting module 12 is capacitive, the multi - frequency detuning rate is less than 0, and the minimum value is negative infinity.

[0113] In an example, the transmitting coils 13 of each phase transmitting subsystem in the three - phase transmitting subsystem 10 are arranged perpendicular to each other in pairs. Among them, the transmitting coils of each phase transmitting subsystem can be circular coils or square coils. Taking the transmitting coil 13 as a circular coil as an example, the transmitting coils 13 of the three - phase transmitting subsystem 10 can form a three - dimensional circular orthogonal coil, as Figure 1 shown. Taking the transmitting coil 13 as a square coil as an example, the transmitting coils 13 of the three - phase transmitting subsystem 10 can form a three - dimensional square orthogonal coil. Those skilled in the art can select the shape of the transmitting coil according to the specific scenario, and the corresponding scheme falls within the protection scope of the present disclosure.

[0114] Continue to refer to Figure 1 and Figure 2 , the receiving subsystem 20 includes a multi - frequency compensation receiving module 22; the multi - frequency compensation receiving module 22 is electrically connected to the receiving coil 21 and the load RL respectively; the receiving coil 21 is used to generate an induced voltage and an induced current according to the induced electromagnetic wave; the multi - frequency compensation receiving module 22 is used to select the fundamental - wave induced power of the induced voltage and the harmonic induced power of at least one frequency, and provide them to the load RL.

[0115] Continue to refer to Figure 1 and Figure 2, the multi - frequency compensation receiving module 22 includes at least one series capacitor Cs, at least one parallel inductor Ls1 and at least one parallel capacitor Cs1; at least one series capacitor Cs is connected in series with at least one parallel inductor Cs1 and then electrically connected to the receiving coil 21; each capacitor in at least one parallel capacitor Cs1 is connected in parallel with each inductor in at least one parallel inductor Ls1. Or rather, the series capacitor Cs and the receiving coil 21 form a series LC detuning sub - network, and the parallel inductor Ls1 and the parallel capacitor Cs1 form a parallel LC detuning sub - network. It can be understood that the operating frequencies of the series LC detuning sub - network and the parallel LC detuning sub - network in the multi - frequency compensation receiving module 22 match the operating frequency of the three - phase transmitting subsystem, so as to ensure the transmission efficiency of wireless power between the transmitting subsystem and the receiving subsystem.

[0116] The embodiment of the present disclosure also provides a configuration method for a wireless power transmission system, which is used to configure Figure 1 and Figure 2 the electrical devices in, including the configuration data of the series capacitors, series inductors, parallel capacitors and parallel inductors in the multi - frequency compensation transmitting module 12 and the multi - frequency compensation receiving module 22. Figure 3 is a flowchart of a configuration method for a wireless power transmission system shown according to an exemplary embodiment, which can be applied to an electronic device with processing functions. The above - mentioned electronic device may include a smart phone, a tablet computer, a personal digital terminal, a server, a host computer, etc., which are not limited herein. Refer to Figure 3 , a configuration method for a wireless power transmission system, includes steps 31 to 34.

[0117] In step 31, obtain the target equivalent circuit of the wireless power transmission system.

[0118] In an embodiment, the electronic device can obtain the target equivalent circuit of the wireless power transmission system, and the target equivalent circuit is as Figure 2 shown.

[0119] In step 32, obtain the operating parameter data of the target equivalent circuit.

[0120] In an embodiment, the electronic device can obtain the operating parameter data of the target equivalent circuit. Among them, the operating parameter data of the target equivalent circuit includes at least one of the following: the mutual inductance value range of the mutual inductance between the transmitting coil and the receiving coil in the wireless power transmission system, the target output power and power fluctuation rate of the three - phase transmitting subsystem in the wireless power transmission system. Among them, the power fluctuation rate refers to the offset ratio of the output power of the three - phase transmitting subsystem to the target output power, and the calculation formula is shown in formula (1).

[0121] Taking the mutual inductance value range of the transmitting coil and the receiving coil in the wireless power transmission system as an example, the mutual inductance value of the wireless power transmission system is related to the distance between the transmitting coil and the receiving coil and the rotation angle of the receiving coil.

[0122] Among them, the distance d between the receiving coil 21 and the transmitting coil 13 refers to the vertical distance between the plane where the receiving coil is located and the surface of the transmitting coil. Continue to refer to Figure 1 , the three-phase transmitting subsystem is a three-dimensional circular orthogonal coil, that is, a sphere, and the receiving coil is regarded as a planar body. Therefore, the above distance d can be converted into the distance in mathematics to calculate the distance from a plane to a sphere or from a point on the surface of a sphere to a plane, and the calculation method will not be elaborated. The calculation method of the rotation angle of the receiving coil 21 is as follows. The angle between the plane where the receiving coil is located and the line OP is μ, and (μ - 90°) is defined as the self-rotation angle of the receiving coil. Among them, the geometric center O of the transmitting coil and the plane center P of the receiving coil.

[0123] In this embodiment, when the rotation angle is fixed, the relationship between the mutual inductance and the distance d is as Figure 4 shown. Refer to Figure 4 , as the distance between the transmitting coil and the receiving coil increases, the mutual inductance gradually decreases.

[0124] In this embodiment, when the distance is fixed, the relationship between the mutual inductance and the rotation angle (μ - 90°) is as Figure 5 shown. Refer to Figure 5 , as the rotation angle of the receiving coil increases, the mutual inductance first decreases and reaches the minimum value when the rotation angle is 90 degrees; then, the mutual inductance increases and reaches the maximum value at 180 degrees.

[0125] Based on Figure 4 and Figure 5 the curves shown, a mutual inductance value range [M min , M max can be preset. Continue to refer to Figure 2 , the mutual inductance value Mn of the transmitting coil 13 and the receiving coil 21 is located within the above mutual inductance value range [M min , M max .

[0126] According to the definition of mutual inductance, the minimum coupling coefficient and the maximum coupling coefficient can be obtained, as shown in Equation (2).

[0127]

[0128] Equation (2), k min represents the minimum coupling coefficient of the transmitting coil and the receiving coil, k max represents the maximum coupling coefficient of the transmitting coil and the receiving coil, M minRepresents the minimum mutual inductance value of the transmitting coil and the receiving coil, M max Represents the maximum mutual inductance value of the transmitting coil and the receiving coil, L n L s Respectively represent the self-inductance values of the transmitting coils and receiving coils of each phase.

[0129] Taking the acquisition of the target output power and power volatility of the three-phase transmitting subsystem in a wireless power transmission system by using two frequencies, namely the fundamental frequency and three times the fundamental frequency, as an example, the output power curve as shown in Figure 6 is obtained. See Figure 6 , the expected output power of the transmitting subsystem within the mutual inductance value range [M min , M max is the curve part within the box 61. Where Prated represents the target output power, the power offset deltaP is between the target output power and the upper edge (or lower edge) of the box 61, and the sum of the power offsets of the upper and lower edges is 2deltaP.

[0130] Continuing to refer to Figure 6 , the curve P out,1 refers to the fundamental power curve of the fundamental power of the target output power, representing the mapping relationship between the fundamental power and the mutual inductance value; the curve P out,3 refers to the harmonic power curve under three times the fundamental frequency, i.e., the third harmonic, representing the mapping relationship between the harmonic power and the mutual inductance value; the curve P out is the output power curve, representing the mapping relationship between the output power and the mutual inductance value; the shape of the curve P out,1 can be adjusted by adjusting the peak position and / or peak amplitude of the curve P out,1 , and the shape of the curve P out,3 can be adjusted by adjusting the peak position and / or peak amplitude of the curve P out,3 ; then by superimposing the curve P out,1 and the curve P out,2 the curve P out can be obtained, achieving the effect of adjusting the target output power Prated and the power volatility.

[0131] Combined with Figure 4 , Figure 5 and Figure 6For the content of the example, the electronic device can first determine the target power curve based on the two known quantities of the target output power and the power volatility; then, adjust the distance between the transmitting coil and the receiving coil, and / or adjust the rotation angle of the receiving coil relative to the transmitting coil, and determine the fundamental power curve of the fundamental power at the above distance and / or rotation angle; after that, after determining the fundamental power curve, considering that there is a proportional coefficient between the fundamental power and the harmonic power, for example, the proportional coefficient of the third harmonic power to the fundamental power can be [0.1, 0.5], in one example, the value of this proportional coefficient is 0.5, then the product of the fundamental power and this proportional coefficient is used as the harmonic power, so as to determine at least one harmonic power curve that matches the fundamental power curve, and obtain the curve combination of the fundamental power curve of the fundamental power and the at least one harmonic power curve.

[0132] In step 33, determine the target detuning rate of the wireless power transmission system according to the working parameter data; the target detuning rate represents that the power volatility between the output power and the target output power of the wireless power transmission system when operating at each frequency is the smallest.

[0133] In this embodiment, when determining the operating frequencies (or harmonic frequencies) of the multi-frequency compensation transmitting module and the multi-frequency compensation receiving module, the target output power and the power volatility can be determined by adjusting the peak positions and peak amplitudes of each power curve, and the power curve within the mutual inductance value range [M min , M max can be obtained. It can be understood that the curve combination of multiple groups of fundamental power curves and at least one harmonic power curve can obtain the power curve within the mutual inductance value range [M min , M max .

[0134] In this embodiment, the electronic device can sequentially obtain the curve combinations of each group of fundamental power curves and at least one harmonic power curve, and determine the multi-frequency detuning rate of the wireless power transmission system. The relationship between the multi-frequency detuning rate, the inductance, and the output power is shown in Equation (3).

[0135]

[0136] In Equation (3), G v,n represents the voltage transfer ratio, L n represents the self-inductance value of the transmitting coil, L s represents the self-inductance value of the receiving coil, α and β respectively represent the detuning rates of the transmitting subsystem and the receiving subsystem, k represents the mutual inductance coupling coefficient, V represents the power supply voltage, R L represents the equivalent load resistance, and ω represents the operating frequency.

[0137] It is understandable that by combining Equation (3), α and β can be adjusted to obtain various curve combinations, thereby determining the multi-frequency detuning rate of the wireless power transmission system.

[0138] It should be noted that the derivation process of Equation (3) is as follows, including:

[0139] Referring to Figure 7 , in the wireless power transmission system model implemented by a single transmitting coil, the primary impedance of the resonant network and the transmitting coil is Xp, and the secondary impedance of the receiving coil and the resonant network is Xs. The detuning rate of this model is defined as shown in Equation (4).

[0140]

[0141] Figure 7 The general model shown can be converted into a series - series circuit model based on the detuning rate, as Figure 8 shown.

[0142] Referring to Figure 8 , the circuit equation of this circuit model is as shown in Equation (5).

[0143]

[0144] In Equation (5), In represents the operating current of the transmitting coil, Is represents the operating current of the receiving coil, and R L represents the equivalent load resistance ( Figure 7 the load Re and the equivalent resistance of the inverter in

[0145] Then, by solving Equation (5), Equation (3) can be obtained.

[0146] The circuit model of a single coil was described in the above embodiments. For Figure 2 the dual - frequency detuning circuit model shown, its multi - frequency detuning rate is as shown in Equation (6).

[0147]

[0148] In Equation (6), α m represents the multi - frequency detuning rate on the transmitting subsystem side, β m represents the multi - frequency detuning rate on the receiving subsystem side, ω m represents the operating frequency (such as the fundamental frequency, harmonic frequency), Ln represents the self - inductance value of the transmitting coil, L s represents the self - inductance value of the receiving coil, L pa represents the inductance value of the parallel inductor on the transmitting subsystem side, C pa represents the inductance value of the parallel capacitor on the transmitting subsystem side, L s1 represents the inductance value of the parallel inductor on the receiving subsystem side, C s1Represents the capacitance value of the shunt capacitor on the receiving subsystem side.

[0149] Assume that when both LC circuits are in resonance, their detuning rate is 0; when the LC circuit presents an inductive impedance, the detuning rate is greater than 0 and less than or equal to 1; when the LC circuit presents a capacitive impedance, the detuning rate is less than 0, that is, the value range of the detuning rate of the LC circuit is (-∞, 1]. Based on the above analysis of the detuning rate of the LC circuit, it can be known that the above multi-frequency detuning rate can characterize the impedance characteristics of the wireless power transmission system when operating at each frequency (fundamental frequency, harmonic frequency).

[0150] In this embodiment, the electronic device can sequentially select each curve combination, and obtain the values of the multi-frequency detuning rate of the wireless power transmission system at each curve combination; then combining the values of multiple multi-frequency detuning rates can determine the value range of the multi-frequency detuning rate.

[0151] In this embodiment, the electronic device can use each group of multi-frequency detuning rates in the value range of the multi-frequency detuning rate as candidate multi-frequency detuning rates, and then obtain the power fluctuation rate corresponding to each group of candidate multi-frequency detuning rates. For example, obtain the candidate fundamental power curve and candidate harmonic power curve corresponding to each group of candidate multi-frequency detuning rates; then, superimpose the candidate fundamental power curve and the candidate harmonic power curve to obtain a candidate output curve; after that, determine the power fluctuation rate according to the candidate output curve and the target output power, as the power fluctuation rate corresponding to each group of candidate multi-frequency detuning rates. Finally, the electronic device can sort the power fluctuation rates corresponding to all candidate multi-frequency detuning rates, obtain the minimum value of the power fluctuation rate, and use the candidate multi-frequency detuning rate when the power fluctuation rate is the minimum value as the target detuning rate.

[0152] Taking the setting of two operating frequencies of the fundamental wave and the third harmonic as an example, its target detuning rate is shown in Equation (7).

[0153]

[0154]

[0155] In Equations (7) and (8), α 1 , α 3 respectively represent the detuning rates of the fundamental wave and the third harmonic of the transmitting subsystem, R L represents the equivalent load, β 1 , β 1 respectively represent the detuning rates of the fundamental wave and the third harmonic of the receiving subsystem, ω 1 , ω 3 respectively represent the fundamental wave frequency and the third harmonic frequency, k min represents the minimum coupling coefficient of the transmitting coil and the receiving coil, k max represents the maximum coupling coefficient of the transmitting coil and the receiving coil, Ls Represents the self-inductance value of the receiving coil.

[0156] In step 34, according to the target detuning rate, the configuration data of each electrical component in the target equivalent circuit is determined.

[0157] In one embodiment, the electronic device can respectively obtain the self-inductance values of the transmitting coil and the receiving coil of the wireless power transmission system; it can be understood that when the manufacturing or selection of the transmitting coil and the receiving coil is completed, their self-inductance values are known quantities.

[0158] Then, the electronic device can determine the self-inductance value of the parallel inductor in the three-phase transmitting subsystem of the wireless power transmission system according to the self-inductance value of the transmitting coil, and determine the self-inductance value of the parallel inductor in the receiving subsystem of the wireless power transmission system according to the self-inductance value of the receiving coil. In the engineering design process, there is a correlation between the self-inductance value of the transmitting coil and the self-inductance value of the parallel inductor, and there is an inductance ratio coefficient between the two, for example, 0.1. Therefore, the self-inductance value of the parallel inductor can be obtained from the self-inductance value and the above inductance ratio coefficient. The method for obtaining the self-inductance value of the parallel inductor in the receiving subsystem is the same as that for obtaining the self-inductance value of the parallel inductor in the transmitting subsystem, and will not be elaborated here.

[0159] After that, combining Equation (6) and Equation (7), the electronic device can determine the capacitance values of the series capacitor and the parallel capacitor in the three-phase transmitting subsystem according to the target detuning rate, the self-inductance value of the transmitting coil, and the self-inductance value of the parallel inductor in the three-phase transmitting subsystem, and determine the capacitance values of the series capacitor and the parallel capacitor in the three-phase transmitting subsystem according to the target detuning rate, the self-inductance value of the receiving coil, and the self-inductance value of the parallel inductor in the receiving subsystem.

[0160] Combining Equation (6) and Equation (7), when the multi-frequency detuning rate in Equation (7) is known, there are unknowns in the upper and lower equations of Equation (6), that is, the capacitance values of the series capacitor and the parallel capacitor. Continuing with two frequencies as an example, in the upper equation, they are the series capacitor Cn and the parallel capacitor Cpa of the transmitting subsystem. Substituting m = 1 and m = 3 into the upper equation of Equation (6) respectively, a system of equations composed of two equations can be obtained, and the series capacitor Cn and the parallel capacitor Cpa can be calculated. It can be understood that the two unknowns in the lower equation of Equation (6), that is, the series capacitor Cs and the parallel capacitor Cs1, can be obtained by using the calculation method of the upper equation, and will not be elaborated here.

[0161] Finally, the electronic device can determine the self-inductance values of the parallel inductors, the self-inductance values of the series inductors, the capacitance values of the series capacitors, and the capacitance values of the parallel capacitors in the three-phase transmitting subsystem, as well as the self-inductance values of the parallel inductors, the self-inductance values of the series inductors, the capacitance values of the series capacitors, and the capacitance values of the parallel capacitors in the receiving subsystem, as the configuration data of each electrical component in the target equivalent circuit.

[0162] So far, in this embodiment, when the distance and / or rotation angle of the receiving coil change, the wireless power transmission system can still stably transmit wireless power, ensuring the charging efficiency of the receiving subsystem and being beneficial to improving the charging experience.

[0163] Based on the configuration method of a wireless power transmission system provided in an embodiment of the present disclosure, an embodiment of the present disclosure further provides a configuration device for a wireless power transmission system. Refer to Figure 9 , including:

[0164] An equivalent circuit acquisition module 91, configured to acquire the target equivalent circuit of the wireless power transmission system;

[0165] A parameter data acquisition module 92, configured to acquire the working parameter data of the target equivalent circuit;

[0166] A detuning rate acquisition module 93, configured to determine the target detuning rate of the wireless power transmission system according to the working parameter data; the target detuning rate represents that the power volatility between the output power and the target output power of the wireless power transmission system when operating at each frequency is the smallest;

[0167] A configuration data acquisition module 94, configured to determine the configuration data of each electrical component in the target equivalent circuit according to the target detuning rate.

[0168] In one embodiment, the working parameter data includes at least one of the following: the mutual inductance value range of the mutual inductance between the transmitting coil and the receiving coil in the wireless power transmission system, the target output power and the power volatility of the three-phase transmitting subsystem in the wireless power transmission system; the power volatility refers to the offset ratio between the output power of the three-phase transmitting subsystem and the target output power.

[0169] In one embodiment, the detuning rate acquisition module includes:

[0170] A curve combination determination sub-module, configured to determine a curve combination of a fundamental power curve and harmonic power curves at at least one frequency according to the target output power and the power volatility; the fundamental power curve is used to characterize the mapping relationship between the fundamental power of the target output power and the mutual inductance value, and the harmonic power curve is used to characterize the mapping relationship between the harmonic power of the target output power and the mutual inductance value;

[0171] A detuning rate acquisition and determination sub-module, configured to determine the multi-frequency detuning rate of the wireless power transmission system according to each curve combination, and obtain the value range of the multi-frequency detuning rate, where the multi-frequency detuning rate is used to characterize the impedance characteristics of the wireless power transmission system when operating at each frequency;

[0172] A volatility acquisition sub-module, configured to acquire the power volatility corresponding to each group of candidate multi-frequency detuning rates in the value range of the multi-frequency detuning rate;

[0173] A detuning rate determination sub-module, configured to determine the candidate multi-frequency detuning rate with the minimum power volatility as the target detuning rate.

[0174] In one embodiment, the curve combination determination sub-module includes:

[0175] A target curve determination unit, configured to determine a target power curve according to the target output power and the power volatility;

[0176] A fundamental wave curve determination unit, configured to determine the fundamental wave power curve of the fundamental wave power at the distance and / or the rotation angle in response to adjusting the distance between the transmitting coil and the receiving coil and / or adjusting the rotation angle of the receiving coil relative to the transmitting coil;

[0177] A curve combination determination unit, configured to determine at least one harmonic power curve matching the fundamental wave power curve in response to determining the fundamental wave power curve of the fundamental wave power, and obtain a curve combination of the fundamental wave power curve of the fundamental wave power and the at least one harmonic power curve.

[0178] In one embodiment, the detuning rate acquisition and determination sub-module includes:

[0179] A detuning rate acquisition unit, configured to acquire the value of the multi-frequency detuning rate of the wireless power transmission system in each curve combination in response to sequentially selecting each curve combination;

[0180] A value range acquisition unit, configured to determine that the values of the multi-frequency detuning rates of all curve combinations constitute the value range of the multi-frequency detuning rate.

[0181] In one embodiment, the volatility acquisition sub-module includes:

[0182] A voltage curve acquisition unit, configured to acquire a candidate fundamental wave power curve and a candidate harmonic power curve corresponding to each group of candidate multi-frequency detuning rates in response to sequentially selecting each group of candidate multi-frequency detuning rates in the value range of the multi-frequency detuning rate;

[0183] A candidate curve acquisition unit, configured to superimpose the candidate fundamental wave power curve and the candidate harmonic power curve to obtain a candidate output curve;

[0184] A volatility acquisition unit, configured to determine a power volatility according to the candidate output curve and the target output power, and use it as the power volatility corresponding to each group of candidate multi-frequency detuning rates.

[0185] In one embodiment, the configuration data acquisition module includes:

[0186] A coil self-inductance acquisition sub-module, configured to respectively acquire the self-inductance values of the transmitting coil and the receiving coil of the wireless power transmission system;

[0187] A first self-inductance acquisition sub-module, configured to determine the self-inductance value of the parallel inductance in the three-phase transmitting sub-system of the wireless power transmission system according to the self-inductance value of the transmitting coil;

[0188] A second self-inductance acquisition sub-module, configured to determine the self-inductance value of the parallel inductance in the receiving sub-system of the wireless power transmission system according to the self-inductance value of the receiving coil;

[0189] A first capacitance value acquisition sub-module, configured to determine the capacitance values of the series capacitor and the parallel capacitor in the three-phase transmitting sub-system according to the target detuning rate, the self-inductance value of the transmitting coil, and the self-inductance value of the parallel inductance in the three-phase transmitting sub-system;

[0190] A second capacitance value acquisition sub-module, configured to determine the capacitance values of the series capacitor and the parallel capacitor in the three-phase transmitting sub-system according to the target detuning rate, the self-inductance value of the receiving coil, and the self-inductance value of the parallel inductance in the receiving sub-system;

[0191] A configuration data determination sub-module, configured to determine the self-inductance value of the parallel inductance in the three-phase transmitting sub-system, the self-inductance value of the series inductance, the capacitance value of the series capacitor, and the capacitance value of the parallel capacitor, and the self-inductance value of the parallel inductance in the receiving sub-system, the self-inductance value of the series inductance, the capacitance value of the series capacitor, and the capacitance value of the parallel capacitor as the configuration data of each electrical component in the target equivalent circuit.

[0192] It should be noted that the device shown in this embodiment matches the content of the method embodiment, and the content of the above method embodiment can be referred to and will not be elaborated here.

[0193] Figure 10 A block diagram of an electronic device shown according to an exemplary embodiment. For example, the electronic device 1000 may be a smart phone, a computer, a digital broadcast terminal, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0194] Refer to Figure 10, the electronic device 1000 may include one or more of the following components: a processing component 1002, a memory 1004, a power supply component 1006, a multimedia component 1008, an audio component 1010, an input / output (I / O) interface 1012, a sensor component 1014, a communication component 1016, and an image acquisition component 1018.

[0195] The processing component 1002 generally controls the overall operation of the electronic device 1000, such as operations associated with display, telephone calls, data communication, camera operations, and recording operations. The processing component 1002 may include one or more processors 1020 to execute computer programs. In addition, the processing component 1002 may include one or more modules to facilitate the interaction between the processing component 1002 and other components. For example, the processing component 1002 may include a multimedia module to facilitate the interaction between the multimedia component 1008 and the processing component 1002.

[0196] The memory 1004 is configured to store various types of data to support the operation of the electronic device 1000. Examples of such data include computer programs for any application or method operating on the electronic device 1000, contact data, phone book data, messages, pictures, videos, etc. The memory 1004 may be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disks, or optical disks.

[0197] The power supply component 1006 provides power to various components of the electronic device 1000. The power supply component 1006 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the electronic device 1000. The power supply component 1006 may include a power chip, and the controller can communicate with the power chip to control the power chip to turn on or off the switching device, so that the battery supplies power to the main board circuit or not.

[0198] The multimedia component 1008 includes a screen that provides an output interface between the electronic device 1000 and the target object. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input information from the target object. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors can not only sense the boundaries of touch or swipe actions, but also detect the duration and pressure associated with the touch or swipe operations.

[0199] The audio component 1010 is configured to output and / or input audio file information. For example, the audio component 1010 includes a microphone (MIC), which is configured to receive external audio file information when the electronic device 1000 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio file information can be further stored in the memory 1004 or transmitted via the communication component 1016. In some embodiments, the audio component 1010 further includes a speaker for outputting audio file information.

[0200] The I / O interface 1012 provides an interface between the processing component 1002 and a peripheral interface module, which can be a keyboard, a click wheel, buttons, etc.

[0201] The sensor component 1014 includes one or more sensors for providing status assessments of various aspects of the electronic device 1000. For example, the sensor component 1014 can detect the on / off state of the electronic device 1000, the relative positioning of components, such as the display screen and keypad of the electronic device 1000. The sensor component 1014 can also detect a change in the position of the electronic device 1000 or a component, the presence or absence of contact between a target object and the electronic device 1000, the orientation or acceleration / deceleration of the electronic device 1000, and the temperature change of the electronic device 1000. In this example, the sensor component 1014 can include a magnetic sensor, a gyroscope, and a magnetic field sensor, where the magnetic field sensor includes at least one of the following: a Hall sensor, a thin film magnetoresistive sensor, and a magnetic fluid acceleration sensor.

[0202] The communication component 1016 is configured to facilitate communication between the electronic device 1000 and other devices in a wired or wireless manner. The electronic device 1000 can access a wireless network based on communication standards, such as WiFi, 2G, 3G, 4G, 5G, or a combination thereof. In an exemplary embodiment, the communication component 1016 receives broadcast information or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1016 further includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0203] In an exemplary embodiment, the electronic device 1000 can be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components.

[0204] In an exemplary embodiment, a non-transitory computer-readable storage medium is also provided, such as a memory including instructions, and the executable computer program can be executed by a processor. Among them, the readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0205] Those skilled in the art will readily conceive of other embodiments of the present disclosure after considering the specification and practicing the disclosure herein. The present disclosure is intended to cover any variations, uses, or adaptations that follow the general principles of the present disclosure and include known common knowledge or conventional technical means in the technical field not disclosed by the present disclosure. The specification and examples are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0206] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A wireless power transmission system, characterized in that, it includes: a three-phase transmitting subsystem and a receiving subsystem; the three-phase transmitting subsystem includes a transmitting coil, and the receiving subsystem includes a receiving coil; when the distance and / or rotation angle between the receiving coil and the transmitting coil change, the receiving subsystem receives wireless power with a received power volatility less than or equal to a preset volatility.

2. The system according to claim 1, characterized in that, each phase transmitting subsystem in the three-phase transmitting subsystem includes an inverter module and a multi-frequency compensation transmitting module; the inverter module is electrically connected to the power supply and the multi-frequency compensation transmitting module respectively; the multi-frequency compensation transmitting module is electrically connected to the transmitting coil; the inverter module is used to convert the power supply voltage into a square wave voltage containing harmonic power components; the multi-frequency compensation transmitting module is used to select the fundamental power and the harmonic power of at least one frequency in the square wave voltage and output them to the transmitting coil; the transmitting coil is used to generate a transmitting current matching the fundamental power and the harmonic power, and radiate an electromagnetic wave matching the transmitting current.

3. The system according to claim 2, characterized in that, the multi-frequency compensation transmitting module includes at least one series capacitor, at least one parallel inductor and at least one parallel capacitor; the at least one series capacitor is connected in series with the at least one parallel inductor and then electrically connected to the inverter module and the transmitting coil respectively; each capacitor in the at least one parallel capacitor is connected in parallel with each inductor in the at least one parallel inductor.

4. The system according to any one of claims 1 to 3, characterized in that, the transmitting coils of each phase transmitting subsystem in the three-phase transmitting subsystem are arranged perpendicular to each other in pairs.

5. The system according to claim 4, characterized in that, the transmitting coil is a circular coil or a square coil.

6. The system according to claim 1, characterized in that, the receiving subsystem includes a multi-frequency compensation receiving module; the multi-frequency compensation receiving module is electrically connected to the receiving coil and the load respectively; the receiving coil is used to generate an induced voltage and an induced current according to the sensed electromagnetic wave; the multi-frequency compensation receiving module is used to select the fundamental induced power and the harmonic induced power of at least one frequency of the induced voltage and supply them to the load.

7. The system according to claim 6, characterized in that, the multi-frequency compensation receiving module includes at least one series capacitor, at least one parallel inductor and at least one parallel capacitor; the at least one series capacitor is connected in series with the at least one parallel inductor and then electrically connected to the receiving coil; each capacitor in the at least one parallel capacitor is connected in parallel with each inductor in the at least one parallel inductor.

8. A three-phase wireless power transmitting subsystem, characterized in that, each phase transmitting subsystem in the three-phase transmitting subsystem includes an inverter module and a multi-frequency compensation transmitting module; the inverter module is electrically connected to the power supply and the multi-frequency compensation transmitting module respectively; the multi-frequency compensation transmitting module is electrically connected to the transmitting coil; The inverter module is used to convert the power supply voltage into a square wave voltage containing harmonic power components; The multi-frequency compensation transmitting module is used to select the fundamental power and harmonic powers of at least one frequency in the square wave voltage and output them to the transmitting coil; The transmitting coil is used to generate a transmitting current matching the fundamental power and the harmonic powers, and radiate an electromagnetic wave matching the transmitting current.

9. The system according to claim 8, wherein, the multi-frequency compensation transmitting module includes at least one series capacitor, at least one parallel inductor, and at least one parallel capacitor; the at least one series capacitor is connected in series with the at least one parallel inductor and then electrically connected to the inverter module and the transmitting coil respectively; each capacitor in the at least one parallel capacitor is connected in parallel with each inductor in the at least one parallel inductor.

10. The system according to claim 9, wherein, the transmitting coils of each phase transmitting subsystem in the three-phase transmitting subsystem are arranged perpendicular to each other in pairs, and the transmitting coil is a circular coil or a square coil.

11. A configuration method for a wireless power transmission system, wherein, comprising: acquiring a target equivalent circuit of the wireless power transmission system; acquiring working parameter data of the target equivalent circuit; determining a target detuning rate of the wireless power transmission system according to the working parameter data; the target detuning rate represents that the power fluctuation rate between the output power and the target output power of the wireless power transmission system when working at each frequency is the smallest; determining configuration data of each electrical component in the target equivalent circuit according to the target detuning rate.

12. The method according to claim 11, wherein, the working parameter data includes at least one of the following: the mutual inductance value range of the mutual inductance between the transmitting coil and the receiving coil in the wireless power transmission system, the target output power and the power fluctuation rate of the three-phase transmitting subsystem in the wireless power transmission system; the power fluctuation rate refers to the offset ratio between the output power of the three-phase transmitting subsystem and the target output power.

13. The method according to claim 11, wherein, determining the target detuning rate of the wireless power transmission system according to the working parameter data includes: determining a curve combination of a fundamental power curve and harmonic power curves of at least one frequency according to the target output power and the power fluctuation rate; the fundamental power curve is used to characterize the mapping relationship between the fundamental power of the target output power and the mutual inductance value, and the harmonic power curve is used to characterize the mapping relationship between the harmonic power of the target output power and the mutual inductance value; determining a multi-frequency detuning rate of the wireless power transmission system according to each curve combination to obtain a value range of the multi-frequency detuning rate, and the multi-frequency detuning rate is used to characterize the impedance characteristics of the wireless power transmission system when working at each frequency; acquiring the power fluctuation rate corresponding to each group of candidate multi-frequency detuning rates in the value range of the multi-frequency detuning rate; determining the candidate multi-frequency detuning rate with the minimum power fluctuation rate as the target detuning rate.

14. The method according to claim 13, wherein, Determine a curve combination of a fundamental power curve and harmonic power curves of at least one frequency according to the target output power and the power volatility, including: Determine a target power curve according to the target output power and the power volatility; In response to adjusting the distance between the transmitting coil and the receiving coil and / or adjusting the rotation angle of the receiving coil relative to the transmitting coil, determine the fundamental power curve of the fundamental power at the distance and / or the rotation angle; In response to determining the fundamental power curve of the fundamental power, determine at least one harmonic power curve that matches the fundamental power curve, and obtain a curve combination of the fundamental power curve of the fundamental power and the at least one harmonic power curve.

15. The method according to claim 13, wherein, Determine the multi-frequency detuning rate of the wireless power transmission system according to each curve combination, and obtain the value range of the multi-frequency detuning rate, including: In response to sequentially selecting each curve combination, obtain the value of the multi-frequency detuning rate of the wireless power transmission system in each curve combination; Determine that the values of the multi-frequency detuning rates of all curve combinations constitute the value range of the multi-frequency detuning rate.

16. The method according to claim 13, wherein, Obtain the power volatility corresponding to each group of candidate multi-frequency detuning rates in the value range of the multi-frequency detuning rate, including: In response to sequentially selecting each group of candidate multi-frequency detuning rates in the value range of the multi-frequency detuning rate, obtain the candidate fundamental power curve and candidate harmonic power curve corresponding to each group of candidate multi-frequency detuning rates; Superimpose the candidate fundamental power curve and the candidate harmonic power curve to obtain a candidate output curve; Determine the power volatility according to the candidate output curve and the target output power, and use it as the power volatility corresponding to each group of candidate multi-frequency detuning rates.

17. The method according to claim 11, wherein, Determine the configuration data of each electrical device in the target equivalent circuit according to the target detuning rate, including: Respectively obtain the self-inductance values of the transmitting coil and the receiving coil of the wireless power transmission system; Determine the self-inductance value of the parallel inductor in the three-phase transmitting subsystem of the wireless power transmission system according to the self-inductance value of the transmitting coil, and determine the self-inductance value of the parallel inductor in the receiving subsystem of the wireless power transmission system according to the self-inductance value of the receiving coil; Determine the capacitance values of the series capacitor and the parallel capacitor in the three-phase transmitting subsystem according to the target detuning rate, the self-inductance value of the transmitting coil, and the self-inductance value of the parallel inductor in the three-phase transmitting subsystem, and determine the capacitance values of the series capacitor and the parallel capacitor in the three-phase transmitting subsystem according to the target detuning rate, the self-inductance value of the receiving coil, and the self-inductance value of the parallel inductor in the receiving subsystem; Determine the self-inductance value of the parallel inductor, the self-inductance value of the series inductor, the capacitance value of the series capacitor, and the capacitance value of the parallel capacitor in the three-phase transmitting subsystem, and the self-inductance value of the parallel inductor, the self-inductance value of the series inductor, the capacitance value of the series capacitor, and the capacitance value of the parallel capacitor in the receiving subsystem as the configuration data of each electrical device in the target equivalent circuit.

18. A configuration device for a wireless power transmission system, characterized in that, comprising: an equivalent circuit acquisition module for acquiring a target equivalent circuit of the wireless power transmission system; a parameter data acquisition module for acquiring operating parameter data of the target equivalent circuit; a detuning rate acquisition module for determining a target detuning rate of the wireless power transmission system according to the operating parameter data; the target detuning rate represents that the power volatility between the output power and the target output power of the wireless power transmission system is minimized when the system operates at each frequency; a configuration data acquisition module for determining configuration data of each electrical component in the target equivalent circuit according to the target detuning rate.

19. A charging device, characterized in that, comprising a three-phase transmitting subsystem in the wireless power transmission system as claimed in claim 1, and the configuration data of the electrical components in the three-phase transmitting subsystem is obtained by using the configuration method of the wireless power transmission system as claimed in any one of claims 11 to 17.

20. An electronic device, characterized in that, comprising a receiving subsystem in the wireless power transmission system as claimed in claim 1, and the configuration data of the electrical components in the receiving subsystem is obtained by using the configuration method of the wireless power transmission system as claimed in any one of claims 11 to 17.

21. A non-transitory computer-readable storage medium, characterized in that, when the executable computer program in the storage medium is executed by a processor, it can implement the method as claimed in any one of claims 11 to 17.

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