Orthogonal energy information transmission magnetic coupling structure and system

Abstract

The invention relates to an orthogonal energy information transmission magnetic coupling structure and system, and relates to the technical field of wireless energy information transmission, the orthogonal energy information transmission magnetic coupling structure comprises a transmitting end and a receiving end, the transmitting end comprises a first magnetic core and a transmitting end integrated coil, and the receiving end comprises a second magnetic core and a receiving end integrated coil; each of the transmitting end integrated coil and the receiving end integrated coil comprises an energy coil for energy transmission and an information coil for information transmission, the information coil comprises a forward information coil and a reverse information coil, the forward information coil is parallel to a plane where the first direction is located, and the reverse information coil is parallel to a plane where the second direction is located. Therefore, the directions of magnetic fields generated by the three coils can be perpendicular to one another, so that signal aliasing and signal crosstalk are reduced, energy loss is reduced, and energy information transmission efficiency is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of wireless energy information transmission, and in particular to an orthogonal energy information transmission magnetic coupling structure and system. Background Art

[0002] The demand for wireless power transmission technology has increased dramatically in various industries, including but not limited to implantable medical devices, electric vehicles, and factory remote monitoring equipment. The demand for real-time monitoring of parameters to be measured in application scenarios under limited operating space is also increasing. Therefore, while the energy is transmitted between the transmitter and the receiver of the system, information interaction processing is required to achieve coordinated transmission of energy and information.

[0003] At present, the synchronous wireless power and data transfer technology (SWPDT) is developing towards high-speed communication and efficient energy transmission, and the energy transmission power and information transmission rate of the system will be further improved. However, since the mainstream synchronous transmission is based on single-channel single-coil transmission, in the process of information transmission, according to Shannon's law, if the modulation frequency of information transmission is close to the energy signal, serious signal aliasing and signal crosstalk will occur, and the energy loss will be large.

[0004] Therefore, how to reduce signal aliasing and signal crosstalk and reduce energy loss has become one of the technical problems that technical personnel in this field need to solve urgently. Summary of the invention

[0005] In order to solve the above technical problems, the present disclosure provides an orthogonal energy information transmission magnetic coupling structure and system, which is used to reduce signal aliasing and signal crosstalk, reduce energy loss, and improve energy information transmission efficiency.

[0006] In a first aspect, the present disclosure provides an orthogonal energy information transmission magnetic coupling structure, comprising: a transmitting end and a receiving end, wherein the transmitting end comprises a first magnetic core and a transmitting end integrated coil, and the receiving end comprises a second magnetic core and a receiving end integrated coil;

[0007] The transmitting end integrated coil and the receiving end integrated coil both include an energy coil for energy transmission and an information coil for information transmission, the information coil includes a forward information coil and a reverse information coil, the forward information coil is parallel to the plane where the first direction is located, and the reverse information coil is parallel to the plane where the second direction is located;

[0008] The first direction is parallel to the plane where the energy coil is located, and the second direction is perpendicular to the plane where the energy coil is located.

[0009] Optionally, the transmitter integrated coil is located on one side of the first magnetic core, the transmitter integrated coil includes a transmitter energy coil and a transmitter forward information coil arranged on one side of the transmitter energy coil, the transmitter forward information coil is parallel to the transmitter energy coil and the first magnetic core; the transmitter integrated coil also includes a transmitter reverse information coil, the transmitter reverse information coil is sleeved on the first magnetic core, the transmitter energy coil, and the transmitter forward information coil;

[0010] The receiving end integrated coil is located on one side of the second magnetic core, and the receiving end integrated coil is arranged opposite to the transmitting end integrated coil. The receiving end integrated coil includes a receiving end energy coil and a receiving end forward information coil arranged on one side of the receiving end energy coil, and the receiving end forward information coil is parallel to the receiving end energy coil and the second magnetic core; the receiving end integrated coil also includes a receiving end reverse information coil, and the receiving end reverse information coil is sleeved on the second magnetic core, the receiving end energy coil, and the receiving end forward information coil; wherein the transmitting end integrated coil and the receiving end integrated coil are equal in size and symmetrical in structure.

[0011] Optionally, the first magnetic core and the second magnetic core are circles of equal size.

[0012] Optionally, the energy coil is in a circular shape, and along the second direction, the projection of the energy coil is located within the projection of the first magnetic core.

[0013] Optionally, the forward information coil is an arc-shaped DD-type coil.

[0014] Optionally, along the second direction, the projection of the forward information coil is located within the projection of the energy coil.

[0015] Optionally, the reverse information coil is a rectangular coil.

[0016] Optionally, the projection of the reverse information coil on the energy coil overlaps with the diameter of the energy coil.

[0017] Optionally, the magnetic core is made of a magnetic core material with high magnetic permeability density.

[0018] In the second aspect, based on the same inventive concept, the present disclosure provides an orthogonal energy information transmission system, including the orthogonal energy information transmission magnetic coupling structure as described in the first aspect, the transmitting end integrated coil is connected to the primary circuit, and the receiving end integrated coil is connected to the secondary circuit; the primary circuit includes a voltage source, an inverter, and a transmitting side compensation capacitor, the voltage source is connected to the input side of the inverter, the transmitting side compensation capacitor and the transmitting end integrated coil are connected in series and connected in parallel to the output side of the inverter; the secondary circuit includes a receiving side compensation capacitor, a rectifier, a filter capacitor and a load, the receiving side compensation capacitor and the receiving end integrated coil are connected in series and connected in parallel to the input side of the rectifier, and the output side of the rectifier is respectively connected in parallel with the filter capacitor and the load.

[0019] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:

[0020] In response to the problems existing in single-channel single-coil wireless energy information synchronous transmission, the present invention proposes an orthogonal energy information transmission magnetic coupling structure and system, which integrates the information transmission system by setting the transmitting side and the receiving side of a pair of energy coils and two pairs of information coils to an orthogonal vertical state, thereby realizing the simultaneous transmission of power and data signals and expanding the system functions; and making the directions of the magnetic fields generated by the three coils perpendicular to each other, thereby reducing signal aliasing and signal crosstalk, reducing energy loss, and improving the efficiency of energy information transmission. By analyzing its magnetic field performance, it is verified that the system can perform real-time, parallel, bidirectional and high-speed transmission of energy information. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 The figure shows a schematic diagram of an orthogonal energy information transmission magnetic coupling structure provided by an embodiment of the present disclosure;

[0024] Figure 2 Shown Figure 1 Explosion diagram of the middle transmitter;

[0025] Figure 3 Shown Figure 1 Exploded diagram of the receiving end;

[0026] Figure 4The figure shows a magnetic field cloud diagram in an orthogonal energy information transmission magnetic coupling structure provided by an embodiment of the present disclosure;

[0027] Figure 5 The figure shows a trend diagram of magnetic lines of force of an information coil provided by an embodiment of the present disclosure;

[0028] Figure 6 Shown is a trend diagram of magnetic lines of force of an energy coil provided by an embodiment of the present disclosure;

[0029] Figure 7 The figure shows the magnetic field distribution of a positive information coil provided by an embodiment of the present disclosure under the action of a single signal;

[0030] Figure 8 The figure shows the magnetic field distribution of a reverse information coil provided by an embodiment of the present disclosure under the action of a single signal;

[0031] Fig. 9 Shown is a connection diagram of an orthogonal energy information transmission system provided by an embodiment of the present disclosure;

[0032] Fig.10 Shown Fig. 9 Equivalent circuit diagram of energy transfer in ;

[0033] Fig.11 Shown Fig. 9 Equivalent circuit diagram of information transmission in . DETAILED DESCRIPTION

[0034] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0036] Figure 1 FIG. 1 is a schematic diagram of an orthogonal energy information transmission magnetic coupling structure provided by an embodiment of the present disclosure. Figure 2 Shown Figure 1 Explosion diagram of the transmitter. Figure 3 Shown Figure 1 Exploded diagram of the receiving end. Figure 4 The figure shows a magnetic field cloud diagram in an orthogonal energy information transmission magnetic coupling structure provided by an embodiment of the present disclosure. Figure 5 The figure shows a magnetic force line trend diagram of an information coil provided by an embodiment of the present disclosure. Figure 6The figure shows a trend diagram of magnetic lines of force of an energy coil provided by an embodiment of the present disclosure; please refer to Figures 1 to 6 The present disclosure provides an orthogonal energy information transmission magnetic coupling structure 100, including: a transmitting end 11 and a receiving end 12, the transmitting end 11 includes a first magnetic core 10 and a transmitting end integrated coil 13, and the receiving end 12 includes a second magnetic core 20 and a receiving end integrated coil 14; the transmitting end integrated coil 13 and the receiving end integrated coil 14 both include an energy coil 30 for energy transmission and an information coil 40 for information transmission, the information coil 40 includes a forward information coil 41 and a reverse information coil 42, the forward information coil 41 is parallel to the plane where the first direction D1 is located, and the reverse information coil 42 is parallel to the plane where the second direction D2 is located; the first direction D1 is parallel to the plane where the energy coil 30 is located, and the second direction D2 is perpendicular to the plane where the energy coil 30 is located.

[0037] Specifically, the orthogonal energy information transmission magnetic coupling structure 100 includes a transmitting end 11 and a receiving end 12, the transmitting end 11 includes a first magnetic core 10, and the transmitting end integrated coil 13 is located on one side surface of the first magnetic core 10, the receiving end 12 includes a second magnetic core 20, and the receiving end integrated coil 14 is located on one side surface of the second magnetic core 20, wherein the transmitting end integrated coil 13 is opposite to the receiving end integrated coil 14.

[0038] The transmitting end integrated coil 13 includes a transmitting end energy coil 31 and a transmitting end information coil 40, wherein the transmitting end information coil 40 includes a transmitting end forward information coil 43 and a transmitting end reverse information coil 45. The transmitting end forward information coil 43 is parallel to the plane where the transmitting end energy coil 31 is located, and the transmitting end reverse information coil 45 is perpendicular to the plane where the transmitting end energy coil 31 is located.

[0039] The receiving end integrated coil 14 includes a receiving end energy coil 32 and a receiving end information coil 40, wherein the receiving end information coil 40 includes a receiving end forward information coil 44 and a receiving end reverse information coil 46. The receiving end forward information coil 44 is parallel to the plane where the receiving end energy coil 32 is located, and the receiving end reverse information coil 46 is perpendicular to the plane where the receiving end energy coil 32 is located.

[0040] Please refer to Figure 4 , Figure 4 This is the internal magnetic field cloud diagram of the orthogonal energy information transmission magnetic coupling structure 100 when the energy coil 30 has an air gap of 30 mm. It can be seen that the internal magnetic field induction intensity is distributed relatively evenly, and the intensity is above 0.06 T, with less noise, indicating that the energy transmission of this structure is less affected by information signal interference.

[0041] Please refer to Figure 5 and Figure 6 ,Depend on Figure 5 Information coil magnetic field line trend and Figure 6 From the trend of the magnetic lines of force of the energy coil, it can be seen that the energy coil has a good transmission effect, there is basically no signal interference problem, there is less high-frequency signal crosstalk, and the magnetic line signals of the three coils are independent of each other.

[0042] In this way, by setting up one group of energy coils 30 and two groups of information coils 40, the three groups of coils are independent of each other, and the magnetic fields formed by the three coils are perpendicular to each other, which can achieve one-way efficient transmission of energy and two-way high-speed exchange of data, and can significantly reduce the mutual interference between high-frequency carriers of different frequencies and amplitudes, and can effectively isolate the potential impact of the energy coil 30 on the information coil 40, thereby ensuring efficient transmission of energy and high-speed transmission of information.

[0043] Please continue to refer to Figures 1 to 3 In an optional embodiment provided by the present disclosure, the transmitter integrated coil 13 is located on one side of the first magnetic core 10, the transmitter integrated coil 13 includes a transmitter energy coil 31 and a transmitter forward information coil 43 arranged on one side of the transmitter energy coil 31, the transmitter forward information coil 43 is parallel to the transmitter energy coil 31 and the first magnetic core 10, the transmitter integrated coil 13 also includes a transmitter reverse information coil 45, the transmitter reverse information coil 45 is sleeved on the first magnetic core 10, the transmitter energy coil 31, and the transmitter forward information coil 43; the receiver integrated coil 14 is located on one side of the second magnetic core 20, the receiver integrated coil 14 is arranged opposite to the transmitter integrated coil 13, and the receiver integrated coil 14 includes The receiving end integrated coil 14 includes a receiving end energy coil 32 and a receiving end forward information coil 44 arranged on one side of the receiving end energy coil 32, the receiving end forward information coil 44 is parallel to the receiving end energy coil 32 and the second magnetic core 20, the receiving end integrated coil 14 also includes a receiving end reverse information coil 46, the receiving end reverse information coil 46 is sleeved on the second magnetic core 20, the receiving end energy coil 32 and the receiving end forward information coil 44; wherein, the transmitting end integrated coil 13 and the receiving end integrated coil 14 are equal in size and symmetrical in structure, optionally, the transmitting end integrated coil 13 and the receiving end integrated coil 14 are symmetrical up and down along the second direction D2, wherein the first magnetic core 10 and the second magnetic core 20 are respectively located on both sides of the integrated coil along the second direction D2.

[0044] Specifically, the transmitting end integrated coil 13 includes a transmitting end energy coil 31, a transmitting end forward information coil 43, and a transmitting end reverse information coil 45. The transmitting end energy coil 31 and the transmitting end forward information coil 43 are parallel to the first magnetic core 10. The transmitting end reverse information coil 45 is arranged on the first magnetic core 10, the transmitting end energy coil 31, and the transmitting end forward information coil 43. The plane where the transmitting end reverse information coil 45 is located is perpendicular to the plane where the transmitting end energy coil 31 is located, that is, the plane where the transmitting end reverse information coil 45 is located is perpendicular to the plane where the transmitting end forward information coil 43 and the first magnetic core 10 are located.

[0045] The receiving end integrated coil 14 includes a receiving end energy coil 32, a receiving end forward information coil 44, and a receiving end reverse information coil 46. The receiving end energy coil 32 and the receiving end forward information coil 44 are parallel to the second magnetic core 20. The receiving end reverse information coil 46 is sleeved on the second magnetic core 20, the receiving end energy coil 32, and the receiving end forward information coil 44. The plane where the receiving end reverse information coil 46 is located is perpendicular to the plane where the receiving end energy coil 32 is located, that is, the plane where the receiving end reverse information coil 46 is located is perpendicular to the plane where the receiving end forward information coil 44 and the second magnetic core 20 are located.

[0046] In this way, by setting the reverse information coil 45 at the transmitting end to be perpendicular to the forward information coil 43 and the energy coil 31 at the transmitting end, and setting the reverse information coil 46 at the receiving end to be perpendicular to the forward information coil 44 and the energy coil 32 at the receiving end, the three signals of forward information, reverse information and energy in the orthogonal energy information transmission magnetic coupling structure 100 can be isolated from each other, and the magnetic fields generated are orthogonal to each other, so that full-duplex communication between the transmitting end 11 and the receiving end 12 can be achieved, signal transmission is not limited by the energy carrier, and the upper limit of the transmission rate is extremely high, which can improve the efficiency of unidirectional energy transmission, reduce the crosstalk of bidirectional signal transmission, and reduce the signal mixing generated by high-frequency carrier signals.

[0047] Please continue to refer to Figures 1 to 6 In an optional embodiment provided in the present disclosure, the first magnetic core 10 and the second magnetic core 20 are circles of equal size. The present disclosure does not limit the diameter of the magnetic core, which can be set according to actual needs. Compared with rectangular magnetic cores, circular magnetic cores usually have better heat dissipation performance and are suitable for applications with high power density. Circular magnetic cores are relatively easier to process, which can relatively reduce manufacturing costs.

[0048] Please continue to refer to Figures 1 to 6 In an optional embodiment provided in the present disclosure, the energy coil 30 is in a circular shape, and along the second direction D2, the projection of the energy coil 30 is located within the projection of the first magnetic core 10.

[0049] Specifically, along the direction perpendicular to the plane where the first magnetic core 10 is located, the center of the transmitting end energy coil 31 overlaps with the projection of the center of the first magnetic core 10, and the center of the receiving end energy coil 32 overlaps with the projection of the center of the second magnetic core 20. The first magnetic core 10 and the second magnetic core 20 are circles of equal size, the transmitting end energy coil 31 is annular, and the outer diameter of the transmitting end energy coil 31 is smaller than the diameter of the first magnetic core 10, and the receiving end energy coil 32 is annular, and the outer diameter of the receiving end energy coil 32 is smaller than the diameter of the second magnetic core 20. The function of the magnetic core is mainly to enhance and guide the magnetic field. When the current passes through the energy coil 30, a magnetic field is generated, and this magnetic field becomes more stable under the enhancement and guidance of the magnetic core. Setting the area of ​​the energy coil 30 to be slightly smaller than the area of ​​the magnetic core can effectively utilize the magnetic conductivity of the magnetic core, reduce magnetic leakage, and improve energy transmission efficiency.

[0050] In this way, by setting the projection of the energy coil 30 in the second direction D2 to be within the projection of the magnetic core, the magnetic conductivity of the magnetic core can be effectively utilized, the magnetic leakage phenomenon can be reduced, and the energy transmission efficiency can be improved.

[0051] Please combine Figures 1 to 6 In an optional embodiment provided in the present disclosure, the positive information coil 41 is a circular arc DD type coil.

[0052] Specifically, the DD type coil usually adopts two symmetrical coil designs, the transmitting end forward information coil 43 and the receiving end forward information coil 44 are respectively two symmetrical arc coils, and the straight sides of the two arc coils are adjacent. Such a structure enables the forward information coil 41 to generate a more uniform and powerful magnetic field, thereby improving the efficiency and stability of information transmission. Compared with the simple annular or spiral design of conventional coils, the DD type coil has a more uniform magnetic field distribution. The DD type coil has a higher coupling coefficient and anti-offset capability, and can more effectively transmit information from the arc coil on one side to the arc coil on the other side, while maintaining a higher energy transmission efficiency and a lower electromagnetic leakage level. In this way, by setting the transmitting end forward information coil 43 and the receiving end forward information coil 44 into arc-shaped DD type coils, the shape of the two back-to-back arc coils can match the shape of the magnetic core and the energy coil 30, and the DD type coil has a higher coupling coefficient and anti-offset capability, and can have a higher energy transmission efficiency and a leakage magnetic level of cultivated land, which is conducive to the improvement of information transmission efficiency.

[0053] Please continue to refer to Figures 1 to 6 In an optional embodiment provided by the present disclosure, along the second direction D2, the projection of the positive information coil 41 is located within the projection of the energy coil 30.

[0054] Specifically, the orthogonal energy information transmission magnetic coupling structure 100 includes a transmitting end integrated coil 13 and a receiving end integrated coil 14, wherein the transmitting end integrated coil 13 includes a transmitting end energy coil 31, a transmitting end forward information coil 43, and a transmitting end reverse information coil 45, wherein the projection of the transmitting end forward information coil 43 in the second direction D2 is located inside the transmitting end energy coil 31; the receiving end integrated coil 14 includes a receiving end energy coil 32, a receiving end forward information coil 44, and a receiving end reverse information coil 46, wherein the projection of the receiving end forward information coil 44 in the second direction D2 is located inside the receiving end energy coil 32, and on the basis of realizing the coordinated transmission of energy and information, the electromagnetic interference with the energy coil 30 is reduced, and the accuracy of information transmission is improved. In this way, by setting the projection of the transmitting end forward information coil 43 in the second direction D2 within the projection of the energy coil 30, the electromagnetic interference between the transmitting end forward information coil 43 and the energy coil 30 can be reduced, and the accuracy of information transmission can be improved.

[0055] Figure 7 FIG. 1 shows the magnetic field distribution of a positive information coil provided by an embodiment of the present disclosure under the action of a single signal. Figure 8 The figure shows the magnetic field distribution of a reverse information coil provided by the embodiment of the present disclosure under the action of a single signal. Figures 1 to 8 In an optional embodiment provided by the present disclosure, the reverse information coil 42 is a rectangular coil.

[0056] Specifically, the transmitting end reverse information coil 45 is a rectangular coil, the rectangular coil includes a rectangular opening, the first magnetic core 10, the transmitting end energy coil 31, and the transmitting end forward information coil 43 are arranged at intervals along the second direction D2, and the first magnetic core 10, the transmitting end energy coil 31, and the transmitting end forward information coil 43 are located in the rectangular opening of the transmitting end reverse information coil 45, that is, the transmitting end reverse information coil 45 is perpendicular to the plane where the first magnetic core 10, the transmitting end energy coil 31, and the transmitting end forward information coil 43 are located. The receiving end reverse information coil 46 is a rectangular coil, the rectangular coil includes a rectangular opening, the second magnetic core 20, the receiving end energy coil 32, and the receiving end forward information coil 44 are arranged at intervals along the second direction D2, and the second magnetic core 20, the receiving end energy coil 32, and the receiving end forward information coil 44 are located in the rectangular opening of the receiving end reverse information coil 46, that is, the receiving end reverse information coil 46 is perpendicular to the plane where the second magnetic core 20, the receiving end energy coil 32, and the receiving end forward information coil 44 are located.

[0057] Please refer to Figure 7 and Figure 8 , it can be seen that the crosstalk effect between the forward information and the reverse information can be ignored, and the overall signal strength is much greater than the fluctuation caused by the crosstalk.

[0058] In this way, by setting the reverse information coil 42 as a rectangular coil, and the rectangular coil being perpendicular to the plane where the energy coil 30 and the forward information coil 41 are located, the magnetic fields generated by the reverse information coil 42 and the energy coil 30 can be orthogonal, and the magnetic fields generated by the reverse information coil 42 and the forward information coil 41 can be orthogonal, thereby reducing mutual interference between high-frequency carriers of different frequencies and amplitudes, and improving the efficiency of energy transmission and the rate of information transmission.

[0059] Please continue to refer to Figures 1 to 8 , the projection of the reverse information coil 42 on the energy coil 30 overlaps with the diameter of the energy coil 30.

[0060] Specifically, in the orthogonal energy information transmission magnetic coupling structure 100, the transmitting end reverse information coil 45 is sleeved on the diameter position of the first magnetic core 10, the transmitting end energy coil 31, and the transmitting end forward information coil 43, so that the transmitting end reverse information coil 45 can be subjected to the same magnetic field strength of the transmitting end energy coil 31 along the first direction D1; the receiving end reverse information coil 46 is sleeved on the diameter position of the second magnetic core 20, the receiving end energy coil 32, and the receiving end forward information coil 44, so that the receiving end reverse information coil 46 can be subjected to the same magnetic field strength of the receiving end energy coil 32 along the first direction D1. In this way, the reverse information coil 42 is located at the center position of the energy coil 30, and the magnetic field generated by the reverse information coil 42 is orthogonal to the magnetic field generated by the energy coil 30, which can reduce the mutual interference between energy transmission and information transmission and improve the transmission quality.

[0061] In an optional embodiment provided by the present disclosure, the magnetic core adopts a magnetic core material with high magnetic permeability density.

[0062] Specifically, a magnetic core with high magnetic permeability density can concentrate the magnetic field and reduce magnetic leakage, thereby reducing energy loss and electromagnetic interference. A magnetic core with high magnetic permeability density has good stability, can maintain good magnetic properties within a certain temperature range, and is not easily affected by the external environment.

[0063] Optionally, the magnetic core material with high magnetic permeability density includes but is not limited to ferrite, nickel ferrite, manganese zinc ferrite, etc. The present disclosure does not specifically limit the type of the magnetic core material, as long as it has a high magnetic permeability density.

[0064] Fig. 9 FIG. 1 is a connection diagram of an orthogonal energy information transmission system provided by an embodiment of the present disclosure. Fig.10 Shown Fig. 9 Equivalent circuit diagram of energy transfer in Fig.11 Shown Fig. 9 Please combine the equivalent circuit diagram of information transmission in Figures 1 to 11The present disclosure provides an orthogonal energy information transmission system 200, comprising the orthogonal energy information transmission magnetic coupling structure 100 as described above, the transmitting end integrated coil 13 is connected to the primary circuit 60, and the receiving end integrated coil 14 is connected to the secondary circuit 70; the primary circuit 60 includes a voltage source U in , inverter 80, transmitter compensation capacitor C P , voltage source U in Connected to the input side of the inverter 80, the transmitter compensation capacitor C P The secondary circuit 70 includes a receiving end compensation capacitor C s , rectifier 90, filter capacitor C0 and load R L , receiving end compensation capacitor C s The receiving end integrated coil 14 is connected in series and connected to the input side of the rectifier 90. The output side of the rectifier 90 is connected to the filter capacitor C0 and the load R L in parallel.

[0065] Specifically, the compensation network adopts a series-series (SS) symmetrical compensation topology. Fig.10 In the figure, the inverter 80 includes four MOSFET switch tubes S1 to S4, Lp, Ls, and M are the self-inductance and mutual inductance of the transmitting end energy coil 13 and the receiving end energy coil 14 respectively, and the rectifier 90 includes four uncontrollable diodes VD1 to VD4.

[0066] Please refer to Fig.11 , energy is transferred from primary to primary under the excitation of high-frequency inverter voltage, and at the same time, the forward information coil 41 and the reverse information coil 42 can realize bidirectional transmission of information. Among them, L1 represents the inductance of the energy coil 31 at the transmitting end, L2 represents the inductance of the forward information coil 43 at the transmitting end, and L4 represents the inductance of the reverse information coil 45 at the transmitting end; L6 represents the inductance of the energy coil 32 at the receiving end, L5 represents the inductance of the forward information coil 44 at the receiving end, and L3 represents the inductance of the reverse information coil 46 at the receiving end; C1~C6 are the compensation capacitors of the corresponding coils; AC is the high-frequency inverter excitation, Us is the excitation of the forward information coil 41, and Up is the excitation of the reverse information coil 42; RL represents the equivalent load of the loop where the energy coil 32 at the receiving end is located, and Rs and Rp are the internal resistances of the forward information coil 41 and the reverse information coil 42. By Fig.11It can be seen that the energy coil 31 at the transmitting end is magnetically coupled with the energy coil 32 at the receiving end, the forward information coil 43 at the transmitting end is magnetically coupled with the forward information coil 44 at the receiving end, the reverse information coil 45 at the transmitting end is magnetically coupled with the reverse information coil 46 at the receiving end, and an energy transmission channel and two information transmission channels are formed between the integrated coil 13 at the transmitting end and the integrated coil 14 at the receiving end. These three channels are independent of each other, and the magnetic fields generated by the energy coil 30 at the transmitting end and the magnetic field generated by the forward information coil 41, and the magnetic field generated by the reverse information coil 42 at the receiving end are orthogonal to each other, which can reduce coupling interference and improve energy transmission efficiency and information transmission rate.

[0067] There is coupling between the energy coil 30 and the forward information coil 41 and the reverse information coil 42 .

[0068] In order to simplify the analysis, based on the mutual inductance coupling theory, the following equation can be established for the multi-coil coupling mechanism:

[0069]

[0070] in, Fig.11 And M in the above formula ik (i=1, 2, 3, ..., n; k=1, 2, 3, ..., n) represents the mutual inductance between the corresponding coils. For the sake of simplicity, the mutual inductance values ​​between the coils are not fully marked. i is the total impedance of the i-th coil loop, and the specific expression is as follows:

[0071] Z i =R i +j(XL i -XC i )

[0072] Among them, R i , L i , C i They are the total resistance, inductance and capacitance of the corresponding coil loop respectively.

[0073] Combination Fig.11 , the system mathematical model of the orthogonal energy information transmission system 200 can be obtained as:

[0074]

[0075] Among them, V s is the excitation of the energy coil 31 at the transmitting end of the system, U s is the excitation of the positive information coil 41, U p For the excitation of the reverse information coil 42, I1~I2 are the currents on the six coils respectively, and Z1~Z6 are the total impedances of the loops where the six coils are located.

[0076] In summary, the present disclosure provides an orthogonal energy information transmission magnetic coupling structure and system, including a transmitter and a receiver, wherein the transmitter includes a first magnetic core and a transmitter integrated coil, and the receiver includes a second magnetic core and a receiver integrated coil; the transmitter integrated coil and the receiver integrated coil both include an energy coil for energy transmission and an information coil for information transmission, and the information coil includes a forward information coil and a reverse information coil, wherein the forward information coil is parallel to the plane where the first direction is located, and the reverse information coil is parallel to the plane where the second direction is located; the first direction is parallel to the plane where the energy coil is located, and the second direction is perpendicular to the plane where the energy coil is located. By setting the transmitting side and the receiving side of a pair of energy coils and two pairs of information coils to an orthogonal vertical state, the directions of the magnetic fields generated by the three coils are perpendicular to each other, thereby reducing signal aliasing and signal crosstalk, reducing energy loss, and improving energy information transmission efficiency. By analyzing its magnetic field performance, it is verified that the system can perform real-time, parallel, bidirectional, and high-speed transmission of energy information.

[0077] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An orthogonal energy information transmission magnetic coupling structure, characterized in that: include: A transmitting end and a receiving end, wherein the transmitting end comprises a first magnetic core and a transmitting end integrated coil, and the receiving end comprises a second magnetic core and a receiving end integrated coil; The transmitting end integrated coil and the receiving end integrated coil both include an energy coil for energy transmission and an information coil for information transmission, the information coil includes a forward information coil and a reverse information coil, the forward information coil is parallel to the plane where the first direction is located, and the reverse information coil is parallel to the plane where the second direction is located; The first direction is parallel to the plane where the energy coil is located, and the second direction is perpendicular to the plane where the energy coil is located.

2. The orthogonal energy information transmission magnetic coupling structure according to claim 1, characterized in that: The transmitting end integrated coil is located on one side of the first magnetic core, and the transmitting end integrated coil includes a transmitting end energy coil and a transmitting end forward information coil arranged on one side of the transmitting end energy coil, and the transmitting end forward information coil is parallel to the transmitting end energy coil and the first magnetic core; the transmitting end integrated coil also includes a transmitting end reverse information coil, and the transmitting end reverse information coil is sleeved on the first magnetic core, the transmitting end energy coil, and the transmitting end forward information coil; The receiving end integrated coil is located on one side of the second magnetic core, and the receiving end integrated coil is arranged opposite to the transmitting end integrated coil. The receiving end integrated coil includes a receiving end energy coil and a receiving end forward information coil arranged on one side of the receiving end energy coil, and the receiving end forward information coil is parallel to the receiving end energy coil and the second magnetic core; the receiving end integrated coil also includes a receiving end reverse information coil, and the receiving end reverse information coil is sleeved on the second magnetic core, the receiving end energy coil, and the receiving end forward information coil; wherein the transmitting end integrated coil and the receiving end integrated coil are equal in size and symmetrical in structure.

3. The orthogonal energy information transmission magnetic coupling structure according to claim 1, characterized in that: The first magnetic core and the second magnetic core are circles of equal size.

4. The orthogonal energy information transmission magnetic coupling structure according to claim 1, characterized in that: The energy coil is in the shape of a ring. Along the second direction, the projection of the energy coil is located within the projection of the first magnetic core.

5. The orthogonal energy information transmission magnetic coupling structure according to claim 1, characterized in that: The positive information coil is a circular arc DD type coil.

6. The orthogonal energy information transmission magnetic coupling structure according to claim 1, characterized in that: Along the second direction, the projection of the forward information coil is located within the projection of the energy coil.

7. The orthogonal energy information transmission magnetic coupling structure according to claim 1, characterized in that: The reverse information coil is a rectangular coil.

8. The orthogonal energy information transmission magnetic coupling structure according to claim 1, characterized in that: The projection of the reverse information coil on the energy coil overlaps with the diameter of the energy coil.

9. The orthogonal energy information transmission magnetic coupling structure according to claim 1, characterized in that: The magnetic core is made of a magnetic core material with high magnetic permeability density.

10. An orthogonal energy information transmission system, comprising the orthogonal energy information transmission magnetic coupling structure according to any one of claims 1 to 9, characterized in that: The transmitting end integrated coil is connected to the primary circuit, and the receiving end integrated coil is connected to the secondary circuit; The primary circuit includes a voltage source, an inverter, and a transmitter-side compensation capacitor, wherein the voltage source is connected to the input side of the inverter, and the transmitter-side compensation capacitor and the transmitter-end integrated coil are connected in series and connected to the output side of the inverter; The secondary circuit includes a receiving side compensation capacitor, a rectifier, a filter capacitor and a load. The receiving side compensation capacitor and the receiving end integrated coil are connected in series and connected to the input side of the rectifier, and the output side of the rectifier is connected in parallel with the filter capacitor and the load respectively.

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