A foldable transceiver antenna for a magnetic resonance coupled wireless power transmission system

Abstract

The present invention discloses a foldable transceiver antenna of a magnetic resonance coupling wireless power transmission system, comprising a transmitting module for wireless power transmission and a receiving module for wireless power reception. The transmitting module is a flat plate structure, comprising a first dielectric substrate and a second dielectric substrate connected by a flexible flat cable, wherein the angle between the first dielectric substrate and the second dielectric substrate is 0°, [90°, 150°] or 180°. The receiving module is a flat plate structure, wherein the front side is a receiving resonant antenna and the back side is a parasitic resonant antenna. The present invention realizes stable and efficient wireless power transmission, and the relative position and relative angle of the transceiver module can be changed to a certain extent, so as to realize multi-scenario application.

Description

Technical Field

[0001] The invention belongs to the field of wireless power transmission, and in particular relates to a foldable transceiver antenna of a magnetic resonance coupling wireless power transmission system. Background Art

[0002] With the continuous development of electronic information technology and automation control technology, various household appliances, consumer electronic products, mobile communication devices, etc. have been widely popularized. However, traditional household appliances rely on wired connections between power cords and power sockets to achieve power supply. Electronic devices with built-in batteries also require wired connections between charging cables and power sockets for charging. Therefore, we can see wires everywhere that provide power supply for these electronic devices. These wires not only occupy our activity space and limit the convenience of using equipment, but also create hidden dangers for safe use of electricity. Therefore, with the growing demand for portable devices and green energy systems that can be used completely wirelessly, the research and application of wireless energy transmission technology has quickly become the focus of domestic and foreign academic and industrial circles. At present, the wireless charging technologies recognized by the industry are mainly divided into three categories. One is the QI standard promoted by the WPC Alliance, also known as magnetic induction coupling technology, the other is the magnetic resonance coupling technology promoted by the Airfuel Alliance, and the other is electromagnetic radiation wireless energy transmission technology. Compared with magnetic induction technology, magnetic resonance coupling technology has obvious advantages in charging distance, spatial freedom, one-to-many charging and power expansion; and compared with electromagnetic radiation wireless energy transmission technology, magnetic resonance coupling technology has more practical application value in terms of energy conversion efficiency, transmission power and electromagnetic safety. At present, this technology has gradually been applied to smart wearables, sweeping robots, AGV and other equipment, giving the equipment the function of wireless charging, and improving the safety and intelligence of the equipment, and enhancing the user experience. In addition, the application of magnetic resonance coupling technology in the field of smart home will also subvert the use mode of traditional home appliances, mobile communication equipment and consumer electronic products. With the residence as the platform, magnetic resonance wireless charging technology, hidden wiring technology and automatic control technology are used to completely remove all power lines in the home living area, wirelessly charge the equipment or continuously supply power, improve the safety, convenience and comfort of the home, and build an efficient, environmentally friendly and energy-saving living environment. Summary of the invention

[0003] The invention provides a foldable transceiver antenna of a magnetic resonance coupling wireless power transmission system, which realizes stable and efficient wireless power transmission.

[0004] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention is: a foldable transceiver antenna of a magnetic resonance coupled wireless power transmission system, comprising a transmitting module for transmitting wireless power and a receiving module for receiving wireless power;

[0005] The transmitting module is a flat plate structure, which includes a first dielectric substrate and a second dielectric substrate connected by a flexible flat cable, and the angle between the first dielectric substrate and the second dielectric substrate is 0°, [90°, 150°] or 180°;

[0006] The receiving module is a flat plate structure, the front side of which is a receiving resonant antenna, and the back side of which is a parasitic resonant antenna.

[0007] The beneficial effects of the present invention are as follows: a foldable transceiver antenna structure of a magnetic resonance coupled wireless power transmission system can realize charging of the receiving module at different distances, angles and positions in the transmitting antenna area by changing the angle between the first dielectric substrate and the second dielectric substrate, and can meet the requirements of wireless charging and power supply for multiple electronic devices at the same time. The transceiver module provided by the present invention realizes miniaturization and integration, greatly reducing economic costs.

[0008] Preferably, the first dielectric substrate includes two layers of printed circuits, the first layer of printed circuits is a first transmitting resonant antenna, and the second layer of printed circuits is a first microstrip line; the first transmitting resonant antenna includes a first coil and a second coil arranged from outside to inside, and a first connection point is arranged on the second coil; a second connection point is arranged at one end of the first microstrip line, and the other end thereof is connected to the second dielectric substrate through a flexible flat cable; the first connection point is connected to the second connection point through a through hole, and the winding method of the first dielectric substrate is spiral winding;

[0009] The first coil and the second coil are both single-turn coils made of microstrip lines.

[0010] The beneficial effects of adopting the above preferred solution are as follows: the first dielectric substrate of the present invention adopts a flat printed circuit board to process the antenna structure of the transceiver module, thereby realizing the miniaturization and integration of the transceiver antenna, and the production, installation and maintenance costs of the transceiver antenna of the present invention are low. The design of the first dielectric substrate of the present invention makes the transmission efficiency relatively stable when the receiving antenna and the transmitting antenna perform lateral relative movement.

[0011] The beneficial effects of adopting the above preferred solution are:

[0012] Preferably, the geometric parameters of the first dielectric substrate are set as follows:

[0013] The microstrip line width W in the first transmitting resonant antenna Tx1 4mm-8mm;

[0014] The spacing S between adjacent microstrip lines in the first transmitting resonant antenna Tx1 1mm-3mm;

[0015] The length L of the first dielectric substrate Tx1180mm-240mm;

[0016] The width H of the first dielectric substrate Tx1 95mm-135mm;

[0017] The outer length L of the first coil Tx1_Res 180mm-240mm;

[0018] The outer width H of the first coil Tx1_Res 95mm-135mm;

[0019] The width W of the first microstrip line Tx2 4mm-8mm.

[0020] The beneficial effects of adopting the above preferred solution are: by setting the geometric parameters of the first dielectric substrate, the effective transmitting area and the effective chargeable area of ​​the transmitting module are guaranteed, and miniaturization and integration are achieved while ensuring the coupling strength between the transmitting module and the receiving module.

[0021] Preferably, the second dielectric substrate comprises two layers of printed circuits, the first layer of printed circuits is a second transmitting resonant antenna in a rectangular spiral ring shape with a notch, and the second layer of printed circuits is a microstrip line coil in a rectangular shape with a notch; the second transmitting resonant antenna comprises a third coil, a fourth coil and a fifth coil arranged from the outside to the inside, the third coil is provided with an electromagnetic energy input port, and the fifth coil is provided with a third connection point; a fourth connection point is provided at one end of the microstrip line coil, and the other end thereof is connected to the first dielectric substrate through a flexible flat cable; the third connection point is connected to the fourth connection point through a through hole; the winding method of the second dielectric substrate is a first layer and a second layer cross winding;

[0022] The third coil, the fourth coil and the fifth coil are all single-turn coils made of microstrip lines.

[0023] The beneficial effects of adopting the above preferred solution are as follows: the second dielectric substrate of the present invention adopts a flat printed circuit board to process the antenna structure of the transceiver module, thereby realizing the miniaturization and integration of the transceiver antenna, and the production, installation and maintenance costs of the transceiver antenna of the present invention are low. The design of the second dielectric substrate of the present invention makes the transmission efficiency relatively stable when the receiving antenna and the transmitting antenna perform lateral relative movement.

[0024] Preferably, the geometric parameters of the second dielectric substrate are set as follows:

[0025] The width W of the microstrip line in the second transmitting resonant antenna Tx3 4mm-8mm;

[0026] The spacing S between adjacent microstrip lines in the second transmitting resonant antennaTx2 2mm-4mm;

[0027] The length L of the second dielectric substrate Tx2 180mm-240mm;

[0028] The width H of the second dielectric substrate Tx2 95mm-135mm;

[0029] The outer length L of the third coil Tx2_Res 180mm-240mm;

[0030] The outer width H of the third coil Tx2_Res 95mm-135mm;

[0031] The width W of the microstrip line in the microstrip line coil Tx4 4mm-8mm;

[0032] The outer length L of the microstrip coil Tx3_Res 170mm-230mm;

[0033] The outer width H of the microstrip line coil Tx3_Res 87mm-127mm.

[0034] The beneficial effects of adopting the above preferred solution are: by setting the geometric parameters of the second dielectric substrate, the effective transmitting area and the effective chargeable area of ​​the transmitting module are guaranteed, and miniaturization and integration are achieved while ensuring the coupling strength between the transmitting module and the receiving module.

[0035] Preferably, the receiving resonant antenna is a rectangular spiral ring coil, which includes a sixth coil and a seventh coil arranged from the outside to the inside, the sixth coil is provided with a fifth connection point, and the seventh coil is provided with a sixth connection point; the parasitic resonant antenna is a rectangular spiral ring coil, which includes an eighth coil and a ninth coil arranged from the outside to the inside, the eighth coil is provided with a seventh connection point, and the ninth coil is provided with an eighth connection point;

[0036] The fifth connection point is connected to the seventh connection point through a through hole, and the sixth connection point is connected to the eighth connection point through a through hole;

[0037] The sixth coil, the seventh coil, the eighth coil and the ninth coil are all single-turn coils made of microstrip lines.

[0038] The beneficial effect of adopting the above preferred solution is that the transmitting module improves the transmission efficiency and increases the transmission distance of the present invention by setting the receiving resonant antenna and the parasitic resonant antenna of the rectangular spiral ring coil.

[0039] Preferably, the geometric parameters of the receiving module are set as follows:

[0040] The microstrip line width W of the receiving resonant antenna Rx1 4mm-7mm;

[0041] The spacing S between adjacent microstrip lines in the receiving resonant antenna Rx1 1mm-3mm;

[0042] The length L of the receiving module Rx1 120mm-150mm;

[0043] The width H of the receiving module Rx1 70mm-80mm;

[0044] The outer length L of the sixth coil Rx1_Res 120mm-150mm;

[0045] The outer width H of the sixth coil Rx1_Res 70mm-80mm;

[0046] The microstrip line width W of the parasitic resonant antenna Rx2 4mm-7mm;

[0047] The spacing S between adjacent microstrip lines in the parasitic resonant antenna Rx2 1mm-3mm;

[0048] The outer length L of the eighth coil Rx2_Res 120mm-150mm;

[0049] The outer width H of the eighth coil Rx2_Res It is 70mm-80mm.

[0050] The beneficial effect of adopting the above preferred solution is that by setting the geometric parameters of the receiving module, miniaturization and integration are achieved while ensuring the transmission efficiency and coupling strength.

[0051] Preferably, the corners of each coil of the transmitting module and the receiving module are smooth arc structures.

[0052] The beneficial effects of adopting the above preferred solution are as follows: the edges and corners of the antenna structure in the present invention are smoothed, which reduces the loss resistance of the antenna and improves the quality factor of the antenna and the wireless energy transmission efficiency of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 This is a schematic diagram of the first layer printed circuit of the first dielectric substrate in the present invention.

[0054] Figure 2 This is a schematic diagram of the second layer printed circuit of the first dielectric substrate in the present invention.

[0055] Figure 3 This is a schematic diagram of the first layer printed circuit of the second dielectric substrate in the present invention.

[0056] Figure 4 This is a schematic diagram of the second layer printed circuit of the second dielectric substrate in the present invention.

[0057] Figure 5 It is a front structural schematic diagram of the receiving module in the present invention.

[0058] Figure 6 It is a schematic diagram of the back structure of the first dielectric substrate in the present invention.

[0059] Figure 7 This is an overall schematic diagram of the transceiver module when the included angle between the first dielectric substrate and the second dielectric substrate in the transmitting module of the present invention is 0°.

[0060] Figure 8 This is a transmission efficiency diagram when the angle between the first dielectric substrate and the second dielectric substrate is 0° according to the present invention.

[0061] Fig. 9 This is an overall schematic diagram of the transceiver module when the included angle between the first dielectric substrate and the second dielectric substrate is [90°, 150°] in the present invention.

[0062] Fig.10 It is a transmission efficiency diagram of the transmitting module and the receiving module of the present invention at different distances.

[0063] Fig.11 This is a transmission efficiency diagram at different angles when the distance between the transmitting module and the receiving module of the present invention is 7 cm.

[0064] Fig.12 This is a transmission efficiency diagram when the angle between the first dielectric substrate and the second dielectric substrate of the present invention is [90°, 150°].

[0065] Fig.13 The figure is an overall schematic diagram of the transceiver module when the included angle between the first dielectric substrate and the second dielectric substrate in the transmitting module of the present invention is 180°.

[0066] Fig.14 This is a transmission efficiency diagram when the angle between the first dielectric substrate and the second dielectric substrate is 180° according to the present invention.

[0067] Wherein: 101-first dielectric substrate, 102-flexible flat cable, 103-second dielectric substrate, 104-receiving module, 1011-first coil, 1012-second coil, 1013-first connection point, 1014-second connection point, 1015-first microstrip line, 1031-third coil, 1032-fourth coil, 1033-fifth coil, 1034-electromagnetic energy input port, 1035-third connection point, 1036-fourth connection point, 1037-microstrip line coil, 1041-sixth coil, 1042-seventh coil, 1043-fifth connection point, 1044-sixth connection point, 1045-seventh connection point, 1046-eighth connection point, 1047-eighth coil, 1048-ninth coil. DETAILED DESCRIPTION

[0068] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0069] A foldable transceiver antenna for a magnetic resonance coupled wireless power transmission system, comprising a transmitting module for transmitting wireless power and a receiving module 104 for receiving wireless power;

[0070] The transmitting module is a flat plate structure, which includes a first dielectric substrate 101 and a second dielectric substrate 103 connected by a flexible flat cable 102, and the angle between the first dielectric substrate 101 and the second dielectric substrate 103 is 0°, [90°, 150°] or 180°;

[0071] The receiving module 104 is a flat plate structure, the front side of which is a receiving resonant antenna, and the back side of which is a parasitic resonant antenna.

[0072] The first dielectric substrate 101 includes two layers of printed circuits, the first layer of printed circuits is the first transmitting resonant antenna, and the second layer of printed circuits is the first microstrip line 1015 .

[0073] like Figure 1-Figure 2 As shown, the first transmitting resonant antenna includes a first coil 1011 and a second coil 1012 arranged from the outside to the inside, and a first connection point 1013 is arranged on the second coil 1012; a second connection point 1014 is arranged at one end of the first microstrip line 1015, and the other end thereof is connected to the second dielectric substrate 103 through a soft flat cable 102; the first connection point 1013 is connected to the second connection point 1014 through a through hole, and the winding method of the first dielectric substrate 101 is spiral winding.

[0074] like Figure 3-Figure 4 As shown, the second dielectric substrate 103 includes 2 layers of printed circuits, the first layer of printed circuits is a second transmitting resonant antenna in a rectangular spiral ring shape with a notch, and the second layer of printed circuits is a microstrip line coil 10137 in a rectangular shape with a notch. The second transmitting resonant antenna includes a third coil 1031, a fourth coil 1032, and a fifth coil 1033 arranged from the outside to the inside, the third coil 1031 is provided with an electromagnetic energy input port 1034, and the fifth coil 1033 is provided with a third connection point 1035; one end of the microstrip line coil 1037 is provided with a fourth connection point 1036, and the other end thereof is connected to the first dielectric substrate 101 through a flexible flat cable 102; the third connection point 1035 is connected to the fourth connection point 1036 through a through hole. The winding method of the second dielectric substrate 103 is a first layer and a second layer cross winding;

[0075] The first coil 1011 , the second coil 1012 , the third coil 1031 , the fourth coil 1032 and the fifth coil 1033 are all single-turn coils made of microstrip lines.

[0076] Among them, the geometric parameters of the transmitting module are set as follows:

[0077] The microstrip line width W in the first transmitting resonant antenna Tx1 4mm-8mm;

[0078] The spacing S between adjacent microstrip lines in the first transmitting resonant antenna Tx1 1mm-3mm;

[0079] The length L of the first dielectric substrate 101 Tx1 180mm-240mm;

[0080] The width H of the first dielectric substrate 101 Tx1 95mm-135mm;

[0081] The outer length L of the first coil 1011 Tx1_Res 180mm-240mm;

[0082] The outer width H of the first coil 1011 Tx1_Res 95mm-135mm;

[0083] The width W of the first microstrip line 1015 Tx2 4mm-8mm;

[0084] The width W of the microstrip line in the second transmitting resonant antenna Tx3 4mm-8mm;

[0085] The spacing S between adjacent microstrip lines in the second transmitting resonant antennaTx2 2mm-4mm;

[0086] The length L of the second dielectric substrate 103 Tx2 180mm-240mm;

[0087] The width H of the second dielectric substrate 103 Tx2 95mm-135mm;

[0088] The outer length L of the third coil 1031 Tx2_Res 180mm-240mm;

[0089] The outer width H of the third coil 1031 Tx2_Res 95mm-135mm;

[0090] The width W of the microstrip line in the microstrip line coil 1037 Tx4 4mm-8mm;

[0091] The outer length L of the microstrip coil 1037 is Tx3_Res 170mm-230mm;

[0092] The outer width H of the microstrip line coil 1037 is Tx3_Res 87mm-127mm.

[0093] like Figure 5-Figure 6 As shown, the receiving resonant antenna is a rectangular spiral ring coil, which includes a sixth coil 1041 and a seventh coil 1042 arranged from the outside to the inside, the sixth coil 1041 is provided with a fifth connection point 1043, and the seventh coil 1042 is provided with a sixth connection point 1044. The parasitic resonant antenna is a rectangular spiral ring coil, which includes an eighth coil 1047 and a ninth coil 1048 arranged from the outside to the inside, the eighth coil 1047 is provided with a seventh connection point 1045, and the ninth coil 1048 is provided with an eighth connection point 1046.

[0094] The fifth connection point 1043 is connected to the seventh connection point 1045 through a through hole, and the sixth connection point 1044 is connected to the eighth connection point 1046 through a through hole.

[0095] The sixth coil 1041 , the seventh coil 1042 , the eighth coil 1047 and the ninth coil 1048 are all single-turn coils made of microstrip lines.

[0096] The geometric parameters of the receiving module 104 are set as follows:

[0097] The microstrip line width W of the receiving resonant antenna Rx1 4mm-7mm;

[0098] The spacing S between adjacent microstrip lines in the receiving resonant antenna Rx1 1mm-3mm;

[0099] The length L of the receiving module 104 Rx1 120mm-150mm;

[0100] The width H of the receiving module 104 Rx1 70mm-80mm;

[0101] The outer length L of the sixth coil 1041 Rx1_Res 120mm-150mm;

[0102] The outer width H of the sixth coil 1041 Rx1_Res 70mm-80mm;

[0103] The microstrip line width W of the parasitic resonant antenna Rx2 4mm-7mm;

[0104] The spacing S between adjacent microstrip lines in a parasitic resonant antenna Rx2 1mm-3mm;

[0105] The outer length L of the eighth coil 1047 Rx2_Res 120mm-150mm;

[0106] The outer width H of the eighth coil 1047 Rx2_Res It is 70mm-80mm.

[0107] The transmitting module and the receiving module 104 of the present invention are both manufactured by using printed circuit board technology.

[0108] The working principle of the present invention is as follows: a signal is input from the electromagnetic energy input port 1034 of the transmitting module, the signal generates electromagnetic oscillation on the first transmitting resonant antenna of the first dielectric substrate 101, and enters the second transmitting resonant antenna of the second dielectric substrate 103 through the flexible flat cable, and after making two turns in the second transmitting resonant antenna of the second dielectric substrate 103, it returns to the electromagnetic energy input port 1034 through the flexible flat cable, and transmits energy to the receiving resonant antenna and the parasitic resonant antenna of the receiving module 104 through magnetic resonance coupling. The electromagnetic energy is output from the receiving resonant antenna and is powered after rectification and voltage stabilization.

[0109] The foldable transceiver antenna structure of the magnetic resonance coupling wireless power transmission system designed by the present invention realizes that the receiving module can be charged at different distances, angles and positions within the transmitting antenna area. The present invention uses a flat printed circuit board to process the antenna structure of the transceiver module, realizing the miniaturization and integration of the transceiver antenna, and the production, installation and maintenance costs of the transceiver antenna of the present invention are low. The edges and corners of the antenna structure in the present invention have been smoothed, reducing the loss resistance of the antenna, and improving the quality factor of the antenna and the wireless energy transmission efficiency of the system.

[0110] The following three specific embodiments are used to describe in detail a foldable transceiver antenna for a magnetic resonance coupled wireless power transmission system provided by the present invention.

[0111] Embodiment 1:

[0112] like Figure 7 As shown, when the included angle between the first dielectric substrate and the second dielectric substrate in the transmitting module is 0°, the first dielectric substrate and the second dielectric substrate overlap, and the first transmitting resonant antenna of the first dielectric substrate and the outermost two turns of the second transmitting resonant antenna in the second dielectric substrate overlap.

[0113] In this embodiment, the electrical parameters of the antennas in the transmitting module and the receiving module are set as follows:

[0114] The adjustable capacitance in series with the transmitting resonant antenna is 47pF-49pF;

[0115] The adjustable capacitance in parallel with the transmitting resonant antenna is 30pF-75pF;

[0116] The adjustable capacitor in series with the receiving resonant antenna is 120pF-150pF;

[0117] The adjustable capacitor in parallel with the receiving resonant antenna is 400pF-680pF.

[0118] In this embodiment, when the second transmitting resonant antenna of the second dielectric substrate 103 is loaded with a radio frequency signal through the electromagnetic energy input port 1034, the winding direction and radio frequency current phase of the antenna of the first dielectric substrate 101 and the antenna of the second dielectric substrate 103 are opposite, and the magnetic flux generated by the two groups of antennas are offset in anti-phase. The antenna of the first dielectric substrate 101 and the antenna of the second dielectric substrate 103 have different numbers of turns and different structural parameters, so the magnetic flux of the antenna of the first dielectric substrate 101 and the antenna of the second dielectric substrate 103 are not equal, and the magnetic flux generated by the two groups of antennas will partially offset, thereby reducing the coupling distance between the transmitting module and the receiving module 104, ensuring the uniform distribution of the over-coupled magnetic field, and improving the transmission efficiency when the receiving module 104 is located at a relatively close distance above the transmitting antenna.

[0119] like Figure 8 As shown, when the center of the receiving module 104 coincides with point A, point B and point C of the second dielectric substrate 103 respectively, the power transmission efficiency is above 87%. When the center of the receiving module 104 is connected to point B of the transmitting module, the transmission efficiency is the highest, which is above 94%.

[0120] In this embodiment, the power transmission distance of the transceiver module is 4mm-7mm, and the transmission efficiency is greater than 80%. In addition, within the effective distance, as the receiving module moves laterally, the transmission efficiency does not decrease significantly, and the horizontal degree of freedom is good.

[0121] Embodiment 2:

[0122] like Fig. 9 As shown, when the angle between the first dielectric substrate 101 and the second dielectric substrate 103 in the transmitting module is [90°, 150°], the electrical parameters of the antennas in the transmitting module and the receiving module 104 are set as follows:

[0123] The adjustable capacitance in series with the transmitting resonant antenna is 330pF-680pF;

[0124] The adjustable capacitor in parallel with the transmitting resonant antenna is 0pF;

[0125] The adjustable capacitor in series with the receiving resonant antenna is 120pF-150pF;

[0126] The adjustable capacitor in parallel with the receiving resonant antenna is 400pF-680pF.

[0127] like Fig.10 As shown, when the RF signal frequency is 6.78MHz, it can be seen from the figure that when the distance between the transmitting module and the receiving module is between 5cm-11cm, the transmission efficiency of the transceiver antenna is relatively balanced, and when the distance between the transceiver modules is 12cm, the transmission efficiency of the present invention is greater than 80%. The transmission efficiency of the present invention is stable, and the effective transmission of electric energy is guaranteed within a certain distance.

[0128] like Fig.11 As shown, when the distance between the transmitting module and the receiving module is 7 cm, it can be seen from the figure that when the angles are 15°, 30°, 45° and 60°, the transmission efficiency of the present invention is greater than 83%, and the transmission efficiency is relatively stable as the angle changes. The stable transmission efficiency at multiple angles of the present invention enables it to have more application scenarios.

[0129] In this embodiment, when the second transmitting resonant antenna of the second dielectric substrate 103 is loaded with a radio frequency signal through the electromagnetic energy input port 1034, the winding direction and radio frequency current phase of the antenna of the first dielectric substrate 101 and the antenna of the second dielectric substrate 103 are the same, and the magnetic flux generated in the two groups of antennas are positively superimposed, thereby improving the coupling strength and transmission efficiency between the transceiver modules when the receiving module 104 is located at a long distance from the transmitting module. The first dielectric substrate 101 and the second dielectric substrate 103 are at a certain angle, so that the magnetic fields generated in different directions are superimposed at the receiving module 104, thereby ensuring the coupling strength and transmission efficiency between the transceiver modules.

[0130] like Fig.12 As shown, when the included angle between the first dielectric substrate 101 and the second dielectric substrate 103 is between 90° and 150°, the transmission efficiency is stable.

[0131] In this embodiment, the power transmission distance of the transceiver module is 50mm-120mm, and the transmission efficiency is greater than 80%. Within the effective distance, as the receiving module moves laterally, the receiving module and the transmitting module can be at a certain angle and the transmission efficiency is stable.

[0132] Embodiment three:

[0133] like Fig.13 As shown, when the angle between the first dielectric substrate 101 and the second dielectric substrate 103 in the transmitting module is 180°, the electrical parameters of the antennas in the transmitting module and the receiving module 104 are set as follows:

[0134] The adjustable capacitance in series with the transmitting resonant antenna is 330pF-680pF;

[0135] The adjustable capacitor in parallel with the transmitting resonant antenna is 0pF;

[0136] The adjustable capacitor in series with the receiving resonant antenna is 120pF-150pF;

[0137] The adjustable capacitor in parallel with the receiving resonant antenna is 400pF-680pF.

[0138] In this embodiment, when the second transmitting resonant antenna of the second dielectric substrate 103 is loaded with a radio frequency signal through the electromagnetic energy input port 1034, the winding direction and radio frequency current phase of the antenna of the first dielectric substrate 101 and the antenna of the second dielectric substrate 103 are the same, and the magnetic flux generated in the two groups of antennas are positively superimposed, which greatly increases the lateral transmitting area of ​​the transmitting module and the chargeable area, so that charging can be performed in the entire transmitting area and powering the receiving module at the same time.

[0139] like Fig.14As shown, in this embodiment, when the center of the receiving module 104 coincides with point D, point E and point F of the first dielectric substrate 101 respectively, the power transmission efficiency is above 87%.

[0140] In this embodiment, the power transmission distance of the transceiver module is 4 mm-7 mm, and the transmission efficiency is greater than 80%. In addition, within the effective distance, the transmission efficiency is stable as the receiving module moves laterally.

[0141] In the embodiment of the present invention, all the second dielectric substrates 103 are placed horizontally.

Claims

1. A foldable transceiver antenna for a magnetic resonance coupled wireless power transmission system. It is characterized in that It includes a transmitting module for transmitting wireless power and a receiving module (104) for receiving wireless power; The transmitting module is a flat plate structure, comprising a first dielectric substrate (101) and a second dielectric substrate (103) connected via a flexible flat cable (102), wherein the angle between the first dielectric substrate (101) and the second dielectric substrate (103) is 0°, [90°, 150°] or 180°; The receiving module (104) is a flat plate structure, the front side of which is a receiving resonant antenna, and the back side of which is a parasitic resonant antenna; The first dielectric substrate (101) comprises two layers of printed circuits, the first layer of printed circuits is a first transmitting resonant antenna, and the second layer of printed circuits is a first microstrip line (1015); the first transmitting resonant antenna comprises a first coil (1011) and a second coil (1012) arranged from outside to inside, and a first connection point (1013) is arranged on the second coil (1012); a second connection point (1014) is arranged at one end of the first microstrip line (1015), and the other end thereof is connected to the second dielectric substrate (103) via a flexible flat cable (102); the first connection point (1013) is connected to the second connection point (1014) via a through hole, and the winding method of the first dielectric substrate (101) is spiral winding; The first coil (1011) and the second coil (1012) are both single-turn coils made of microstrip lines; The second dielectric substrate (103) comprises two layers of printed circuits, the first layer of printed circuits is a second transmitting resonant antenna in the shape of a rectangular spiral ring with a notch, and the second layer of printed circuits is a microstrip line coil (1037) in the shape of a rectangle with a notch; the second transmitting resonant antenna comprises a third coil (1031), a fourth coil (1032) and a fifth coil (1033) arranged from the outside to the inside, the third coil (1031) is provided with an electromagnetic energy input port (1034), and the fifth coil (1033) is provided with a third connection point (1035); one end of the microstrip line coil (1037) is provided with a fourth connection point (1036), and the other end thereof is connected to the first dielectric substrate (101) via a flexible flat cable (102); the third connection point (1035) is connected to the fourth connection point (1036) via a through hole; the winding method of the second dielectric substrate (103) is first-layer and second-layer cross winding; The third coil (1031), the fourth coil (1032) and the fifth coil (1033) are all single-turn coils made of microstrip lines.

2. The foldable transceiver antenna of the magnetic resonance coupled wireless power transmission system according to claim 1, It is characterized in that The geometric parameters of the first dielectric substrate (101) are set as follows: The microstrip line width W in the first transmitting resonant antenna Tx1 4mm-8mm; The spacing S between adjacent microstrip lines in the first transmitting resonant antenna Tx1 1mm-3mm; The length L of the first dielectric substrate (101) Tx1 180mm-240mm; The width H of the first dielectric substrate (101) Tx1 95mm-135mm; The outer length L of the first coil (1011) Tx1_Res 180mm-240mm; The outer width H of the first coil (1011) Tx1_Res 95mm-135mm; The width W of the first microstrip line (1015) is Tx2 4mm-8mm.

3. The foldable transceiver antenna of the magnetic resonance coupled wireless power transmission system according to claim 1, It is characterized in that The geometric parameters of the second dielectric substrate (103) are set as follows: The width W of the microstrip line in the second transmitting resonant antenna Tx3 4mm-8mm; The spacing S between adjacent microstrip lines in the second transmitting resonant antenna Tx2 2mm-4mm; The length L of the second dielectric substrate (103) Tx2 180mm-240mm; The width H of the second dielectric substrate (103) is Tx2 95mm-135mm; The outer length L of the third coil (1031) Tx2_Res 180mm-240mm; The outer width H of the third coil (1031) Tx2_Res 95mm-135mm; The width W of the microstrip line in the microstrip line coil (1037) Tx4 is 4 mm - 8 mm; The outer length L of the microstrip line coil (1037) Tx3_Res 170mm-230mm; The outer width H of the microstrip line coil (1037) is Tx3_Res 87mm-127mm.

4. The foldable transceiver antenna of the magnetic resonance coupling wireless power transmission system according to claim 1, It is characterized in that The receiving resonant antenna is a rectangular spiral ring coil, comprising a sixth coil (1041) and a seventh coil (1042) arranged from outside to inside, the sixth coil (1041) is provided with a fifth connection point (1043), and the seventh coil (1042) is provided with a sixth connection point (1044); the parasitic resonant antenna is a rectangular spiral ring coil, comprising an eighth coil (1047) and a ninth coil (1048) arranged from outside to inside, the eighth coil (1047) is provided with a seventh connection point (1045), and the ninth coil (1048) is provided with an eighth connection point (1046); The fifth connection point (1043) is connected to the seventh connection point (1045) through a through hole, and the sixth connection point (1044) is connected to the eighth connection point (1046) through a through hole; The sixth coil (1041), the seventh coil (1042), the eighth coil (1047) and the ninth coil (1048) are all single-turn coils made of microstrip lines.

5. The foldable transceiver antenna of the magnetic resonance coupling wireless power transmission system according to claim 4, It is characterized in that The geometric parameters of the receiving module are set as follows: The microstrip line width W of the receiving resonant antenna Rx1 4mm-7mm; The spacing S between adjacent microstrip lines in the receiving resonant antenna Rx1 is 1 mm - 3 mm; The receiving module (104) has a length L Rx1 120mm-150mm; The receiving module (104) has a width H Rx1 70mm-80mm; The outer length L of the sixth coil (1041) Rx1_Res 120mm-150mm; The outer width H of the sixth coil (1041) Rx1_Res 70mm-80mm; The microstrip line width W of the parasitic resonant antenna Rx2 4mm-7mm; The spacing S between adjacent microstrip lines in the parasitic resonant antenna Rx2 1mm-3mm; The outer length L of the eighth coil (1047) Rx2_Res 120mm-150mm; The outer width H of the eighth coil (1047) Rx2_Res It is 70mm-80mm.

6. The foldable transceiver antenna of the magnetic resonance coupled wireless power transmission system according to any one of claims 1 to 5, It is characterized in that The corners of each coil of the transmitting module and the receiving module (104) are smooth arc structures.

Images