A high-isolation wireless energy information synchronous transmission system

Abstract

The present invention discloses a high-isolation wireless energy information synchronous transmission system. The wireless energy transmission channel includes an energy transmission coil 1 and a coil 2, a resonant compensation network connecting the primary and secondary sides of the energy transmission coil 1 and the coil 2, and a wave-blocking network connecting the resonant compensation network. The system also includes a high-frequency inverter circuit and a rectifier circuit connecting the resonant compensation network and the wave-blocking network. The wireless information transmission channel includes an information transmission coil 3 and a coil 4, a resonant compensation network connecting the primary and secondary sides of the information transmission coil 3 and the coil 4, and a wave-blocking network connecting the resonant compensation network. The system also includes a high-frequency inverter circuit and a rectifier circuit connecting the resonant compensation network and the wave-blocking network. A magnetic core is provided below the energy transmission coil 1 and the coil 2, and an aluminum plate is placed below the magnetic core. The present invention saves space occupied by the device and the magnetic core, while not affecting the original constant current working characteristics of the LCC and CLC compensation topologies.

Description

Technical Field

[0001] The present invention belongs to the technical field of wireless power transmission, and in particular relates to a high-isolation wireless energy information synchronous transmission system. Background Art

[0002] Because the underwater environment differs from atmospheric conditions and is complex and ever-changing, underwater energy resupply and communications have long been a real challenge for navies worldwide. Underwater energy resupply often relies on cable transmission, which is costly and difficult. Most countries can only achieve intermittent information transmission at a depth of 100 meters, at the kilobyte level, severely restricting intelligence acquisition, command and control, and communication transmission for submarines and unmanned underwater vehicles.

[0003] With the rapid development of submarines, unmanned underwater vehicles, and sensors, high-speed and stable underwater data transmission has become a key technical challenge that needs to be solved. Currently, underwater communication generally uses underwater acoustic communication, optical communication, microwave communication, and magnetic induction communication.

[0004] Because both the transmitter and receiver antennas in magnetic coupling communication are coils, their size can be customized to suit the operating environment, eliminating the issue of oversized antennas. For most signal transmission media (air, water, and soil), their magnetic permeability is nearly identical to that of air and does not vary over time or space. Therefore, magnetic induction communication channels are stable. In marine environments, magnetic induction communication offers three advantages over electromagnetic field communication: channel stability, smaller antenna size, and no multipath loss.

[0005] Therefore, wireless energy information synchronous transmission systems are bound to have more applications in the future. However, for underwater wireless power transmission applications with high power requirements, such as unmanned submersibles, interference between channels is more serious. Summary of the Invention

[0006] The purpose of the present invention is to propose a high-isolation wireless energy information synchronous transmission system based on multi-antenna decoupling integration in response to the deficiencies of the existing technology.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention to solve its technical problem is: a high-isolation wireless energy information synchronous transmission system, including a dual-channel wireless energy transmission channel and a wireless information transmission channel based on a wave-blocking network, the wireless energy transmission channel includes an energy transmission coil 1 and an energy transmission coil 2 of the same shape and size, a resonant compensation network connecting the primary and secondary sides of the energy transmission coil 1 and the energy transmission coil 2, and a wave-blocking network connecting the resonant compensation network, and also includes a high-frequency inverter circuit and a rectifier circuit connecting the resonant compensation network and the wave-blocking network, the high-frequency inverter circuit on the primary side of the energy transmission coil 1 is connected in parallel with the input side of the high-frequency inverter circuit on the primary side of the energy transmission coil 2, and the high-frequency inverter circuit on the secondary side of the energy transmission coil 1 is connected in parallel with the input side of the high-frequency inverter circuit on the primary side of the energy transmission coil 2. The output sides of the high-frequency inverter circuit on the secondary side of the transmission coil 2 are both connected to the load; the resonant compensation network adopts a double-sided LCC compensation topology structure, which has the advantages of good high-frequency component attenuation characteristics and wide-band characteristics. The resonant compensation network structure of the primary and secondary sides is symmetrical and has the function of bidirectional transmission. After being excited by the high-frequency AC voltage, the primary side of the coil generates a high-frequency AC current, which excites the high-frequency electromagnetic field so that the secondary side of the coil induces a high-frequency voltage, thereby realizing the transfer of energy or information from the primary side to the secondary side; the wave-blocking network adopts an LC parallel loop topology structure, and the input and output ends of the primary and secondary sides are respectively connected to the resonant compensation network, which has the advantage of good high-frequency component attenuation characteristics, and is used to select specific frequency components flowing into the loop, reducing the wireless energy transmission channel, the wireless information transmission channel, Interference between the wireless energy transmission channel and the wireless information transmission channel is improved, and the isolation of the transmission channel is improved; the wireless information transmission channel includes an information transmission coil 3 and an information transmission coil 4 of the same shape and size, a resonant compensation network connecting the primary and secondary sides of the information transmission coil 3 and the information transmission coil 4, and a wave-blocking network connecting the resonant compensation network, and also includes a high-frequency inverter circuit and a rectifier circuit connecting the resonant compensation network and the wave-blocking network. The high-frequency inverter circuit on the primary side of the information transmission coil 3 is connected in parallel with the input side of the high-frequency inverter circuit on the primary side of the information transmission coil 4, and the high-frequency inverter circuit on the secondary side of the information transmission coil 3 and the output side of the high-frequency inverter circuit on the secondary side of the information transmission coil 4 are both connected to the load; the resonant compensation network adopts a double-sided CLC compensation topology. The structure has the advantages of good high-frequency component attenuation characteristics and wide bandwidth characteristics. The resonant compensation network structure of the primary and secondary sides is symmetrical and has the function of bidirectional transmission. After being excited by the high-frequency AC voltage, the primary side of the coil generates a high-frequency AC current, which excites the high-frequency electromagnetic field so that the secondary side of the coil induces a high-frequency voltage, thereby realizing the transfer of energy or information from the primary side to the secondary side; the wave-blocking network adopts an LC parallel circuit topology structure, and the output end is connected to the resonant compensation network, which has the advantage of good high-frequency component attenuation characteristics and is used to select specific frequency components flowing into the circuit; the high-frequency inverter circuit is composed of two full-bridge inverter bridge arms in parallel, and each inverter bridge arm is composed of two upper and lower power tubes in series, which converts the DC voltage on the input side into a high-frequency AC voltage for exciting the resonant compensation network;The rectifier circuit includes two high-frequency rectifiers, each of which is composed of two upper and lower rectifier diodes connected in series; a magnetic core is provided below the energy transmission coils 1 and 2, and an aluminum plate is placed below the magnetic core.

[0008] Furthermore, the resonant compensation network structure of the primary and secondary sides of the energy transmission coil 1 is symmetrical, and the resonant compensation network on the primary side is connected through the primary compensation coil. L f 11 Connect to the output end of the wave blocking network and the primary compensation coil L f 11 The output terminals are connected to capacitors C11 and capacitance C f 11 Input terminal, capacitor C11 and capacitors C f 11 The output end is connected to both ends of the primary side of the energy transmission coil 1, and the resonant compensation network on the secondary side of the energy transmission coil 1 is connected through capacitors C f 12 and capacitors C12 Connect the secondary side of the energy transmission coil 1; the resonant compensation network structure of the primary and secondary sides of the energy transmission coil 2 is symmetrical, and the input side of the resonant compensation network on the primary side of the energy transmission coil 2 is connected through the primary compensation coil L f 21 Connect the wave blocking network and the primary compensation coil L f 21 The output terminals are connected to capacitor C21 and capacitor C f 21 Input terminal, capacitor C21 and capacitor C f 21 The input terminals are connected to both ends of the primary side of the energy transmission coil 2, and the resonant compensation network on the secondary side of the energy transmission coil 2 is connected through capacitors C f 22 Connect the energy transmission coil 2 secondary side with capacitor C22, capacitor C22 and capacitor C f 22 The output side is respectively compensated by the secondary side coil L f 22 Connect the rectifier circuit and the high-frequency inverter circuit, and connect the wave-blocking network on the input side.

[0009] Furthermore, the resonant compensation network structure of the primary and secondary sides of the information transmission coil 3 is symmetrical, and the resonant compensation network on the primary side is connected by capacitors. C31 Connect to the output end of the wave blocking network, capacitor C31 Connect capacitor C f 31 and primary compensation coil L f 31 ,capacitance C f 31 and primary compensation coil L f 31 The output end is connected to both ends of the primary side of the information transmission coil 3, and the resonant compensation network on the secondary side of the information transmission coil 3 is connected through capacitors C f 32 and secondary compensation coil L f 32 Connect the 3rd secondary side of the information transmission coil and the capacitor C f 32 The output side is connected to the wave blocking network, and the output end of capacitor C32 is connected to the input end of capacitor Cf32 and the secondary compensation coil respectively. L f 32 Input end, secondary compensation coil L f 32 Connect the rectifier circuit; the information transmission coil 4 primary and secondary resonant compensation network structure is symmetrical, the primary side of the resonant compensation network through the capacitor C41 Connect to the output end of the wave blocking network, capacitor C41 Connect capacitor C f 41 and primary compensation coil L f 41 ,capacitance C f 41 and primary compensation coil L f 41 The output end is connected to both ends of the primary side of the information transmission coil 4, and the resonant compensation network on the secondary side of the information transmission coil 4 is connected through capacitors C f 42 and secondary compensation coil L f 42 Connect the 4 secondary sides of the information transmission coil and the capacitor C f 42The output side is connected to the wave blocking network, and the output end of capacitor C42 is connected to the input end of capacitor Cf42 and the secondary compensation coil respectively. L f 42 Input end, secondary compensation coil L f 42 Connect the rectifier circuit.

[0010] Furthermore, the energy transmission coil 1 has a parallel resonant compensation network on the primary and secondary sides, and the primary side of the wave choke network is composed of an inductor. L s 11 and capacitor C s 11 in parallel, the secondary side of the wave blocking network is composed of inductors L s 12 and capacitor C s 12 in parallel; the energy transmission coil 2 is a parallel resonant compensation network of the primary and secondary sides of the wave-blocking network, the primary side of the wave-blocking network is composed of an inductor L s 21 and capacitor C s 21 in parallel, the secondary side of the wave blocking network is composed of inductors L s 22 and capacitor C s 22 in parallel.

[0011] Furthermore, the information transmission coil 3 has a parallel resonant compensation network on the primary and secondary sides, and the primary side of the wave blocking network is composed of an inductor. L s 31 and capacitor C s 31 in series with the inductor L s 32 and capacitor C s 32 in parallel, the secondary side of the wave blocking network is composed of inductors L s 33 and capacitor C s 33 in series with the inductor L s 34 and capacitor C s 34 in parallel; the information transmission coil 4 is a parallel resonant compensation network of the primary and secondary sides of the wave blocking network, the primary side of the wave blocking network consists of an inductor L s 41 and capacitor C s 41 in series with the inductor L s 42 and capacitor Cs 42 in parallel, the secondary side of the wave blocking network is composed of inductors L s 43 and capacitor C s 43 in series with the inductor L s 44 and capacitor C s 44 in parallel.

[0012] Furthermore, the primary side of the energy transmission coil 1 is a power tube S 11 and S 12 After connecting in series with the power tube S 13 and S 14 The secondary side of the energy transmission coil 1 is the power tube S 15 and S 16 After connecting in series with the power tube S 17 and S 18 In parallel, the primary side of the energy transmission coil 2 is the power tube S 21 and S 22 After connecting in series with the power tube S 23 and S 24 The secondary side of the energy transmission coil 2 is the power tube S 25 and S 26 After connecting in series with the power tube S 27 and S 28 The input sides of the two inverter bridge arms of the energy transmission coil 1 and the energy transmission coil 2 are connected in parallel and then connected to the DC power supply. V in 1 , and connect the bus capacitor in parallel C i1 and busbar capacitance C i2 The output side of the inverter bridge arm is drawn from the midpoint of the bridge arm, and the output sides of the two inverter bridge arms on the secondary side of the energy transmission coil 1 and the energy transmission coil 2 are connected in parallel and then connected to the filter capacitor. C o1 and filter capacitors C o2 Get DC voltage for subsequent load RD 1 and load R D 2 Power supply; the output ends of the secondary rectifier circuit are connected in parallel to the load R D 1 and load R D 2 , the primary side of the energy transmission coil 1 is the rectifier diode D 11 ~D 14 , respectively connected in parallel to the power tube S 11 ~S 14 The secondary side of the energy transmission coil 1 is the rectifier diode D 15 ~D 18 , respectively connected in parallel to the power tube S 15 ~S 18 The primary side of the energy transmission coil 2 is the rectifier diode D 21 ~D 24 , respectively connected in parallel to the power tube S 21 ~S 24 The secondary side of the energy transmission coil 2 is the rectifier diode D 25 ~D 28 , respectively connected in parallel to the power tube S 25 ~S 28 superior.

[0013] Furthermore, the primary side of the information transmission coil 3 is a power tube S 31 and S 32 After connecting in series with the power tube S 33 and S 34 The information transmission coil 3 is connected in parallel, and the secondary side is the power tube S 35 and S 36 After connecting in series with the power tube S 37 and S 38 In parallel, the primary side of the information transmission coil 4 is the power tube S 41 and S 42 After connecting in series with the power tube S 43 and S 44 The information transmission coil 4 is connected in parallel, and the secondary side is the power tube S 45 and S46 After connecting in series with the power tube S 47 and S 48 The information transmission coil 3 and the information transmission coil 4 are connected in parallel, and the input side of the two inverter bridge arms on the primary side are connected in parallel and then connected to the DC power supply. V in 2 , and connect the bus capacitor in parallel C i3 and busbar capacitance C i4 The output side of the inverter bridge arm is drawn from the midpoint of the bridge arm, and the output sides of the two inverter bridge arms on the secondary side of the information transmission coil 3 and the information transmission coil 4 are connected in parallel and then connected to the filter capacitor. C o3 and filter capacitors C o4 Get DC voltage for subsequent load R D 3 and load R D 4 Power supply; the output ends of the secondary rectifier circuit are connected in parallel to the load R D 1 and load R D 2 , the primary side of the information transmission coil 3 is the rectifier diode D 31 ~D 34 , respectively connected in parallel to the power tube S 31 ~S 34 The secondary side of the information transmission coil 3 is the rectifier diode D 35 ~D 38 , respectively connected in parallel to the power tube S 35 ~S 38 The primary side of the information transmission coil 4 is the rectifier diode D 41 ~D 44 , respectively connected in parallel to the power tube S 41 ~S 44 The secondary side of the information transmission coil 4 is the rectifier diode D 45 ~D 48 , respectively connected in parallel to the power tube S 45 ~S 48 superior.

[0014] In the high-isolation wireless energy information synchronous transmission system, the energy transmission coil 1 and coil 2, and the information transmission coil 3 and coil 4 are all DD-type coils, the energy transmission coil 1 and the energy transmission coil 2 are orthogonal to each other, and the information transmission coil 3 and the information transmission coil 4 are orthogonal to each other.

[0015] In the high-isolation wireless energy information synchronous transmission system, the center projections of the energy transmission coil 1 and the energy transmission coil 2 fall on the center line line 1, and the center projections of the information transmission coil 3 and the information transmission coil 4 fall on the center line line 1. The information transmission coil 3 and the coil 4 overlap and are placed on the central axis position of the energy transmission coil 1 and the coil 2.

[0016] The beneficial effects of the present invention are as follows: all coils on the same side of the coil of the present invention are decoupled and integrated, the coils on the same side share a magnetic core, and the energy transmission coils, the information transmission coils, and the energy coils and the information transmission coils are decoupled from each other and do not interfere with each other, thereby reducing the volume of the wireless energy information synchronous transmission system, saving magnetic cores, and having high isolation characteristics, which is particularly suitable for application scenarios of high-power energy replenishment and high-speed information interaction. The present invention integrates all four coils on the same side together to share a magnetic core, achieving mutual decoupling between the coils on the same side, and at the same time decoupling between the compensation coils on both sides, as well as mutual decoupling between the secondary main coil and the primary compensation coil, and between the primary main coil and the secondary compensation coil. Such a coil integration method saves space occupied by the device and saves magnetic cores, while not affecting the original constant current working characteristics of the LCC and CLC compensation topologies. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a top view of the coil structure of the system of the present invention;

[0018] Figure 2 This is a topological diagram of the wireless energy transmission channel of the present invention;

[0019] Figure 3 It is a topological structure diagram of the wireless information transmission channel of the present invention. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0021] Reference Figure 1As shown, the present invention discloses a wireless energy information synchronous transmission system based on multi-coil decoupling integration, which is a magnetically coupled wireless energy synchronous transmission system based on dual-channel parallel connection, and mainly includes two parts: a dual-channel wireless energy transmission channel based on a wave-blocking network and a wireless information transmission channel. The wireless energy transmission channel includes an energy transmission coil 1 and an energy transmission coil 2 of the same shape and size, a resonant compensation network connecting the primary and secondary sides of the energy transmission coil 1 and the energy transmission coil 2, and a wave-blocking network connecting the resonant compensation network. It also includes a high-frequency inverter circuit connecting the resonant compensation network and the wave-blocking network. A magnetic core is provided under the energy transmission coil 1 and the energy transmission coil 2, and an aluminum plate is placed under the magnetic core. The high-frequency inverter circuit on the primary side of the energy transmission coil 1 is connected in parallel with the input side of the high-frequency inverter circuit on the primary side of the energy transmission coil 2, and the high-frequency inverter circuit on the secondary side of the energy transmission coil 1 and the output side of the high-frequency inverter circuit on the secondary side of the energy transmission coil 2 are both connected to the load. The wireless information transmission channel includes an information transmission coil 3 and an information transmission coil 4 of the same shape and size, a resonant compensation network connecting the primary and secondary sides of the information transmission coil 3 and the information transmission coil 4, and a wave-blocking network connecting the resonant compensation network. It also includes a high-frequency inverter circuit connecting the resonant compensation network and the wave-blocking network. The high-frequency inverter circuit on the primary side of the information transmission coil 3 is connected in parallel with the input side of the high-frequency inverter circuit on the primary side of the information transmission coil 4, and the high-frequency inverter circuit on the secondary side of the information transmission coil 3 and the output side of the high-frequency inverter circuit on the secondary side of the information transmission coil 4 are both connected to the load.

[0022] Figure 2 The topology of the wireless energy transmission channel in the system of the present invention is shown. It primarily consists of a high-frequency inverter circuit, a wave-blocking network, a resonant compensation network, and a rectifier circuit. The midpoint of each rectifier circuit's bridge arm is connected to two resonant compensation networks. The high-frequency AC voltage output by the resonant compensation network is rectified by a full-bridge and then filtered by a filter capacitor to generate a DC voltage for powering subsequent loads. The AC current output by the resonant compensation network is filtered by two parallel high-frequency rectifier bridges to generate a DC current for powering the loads.

[0023] The resonant compensation network adopts a double-sided LCC compensation topology, which has the advantages of good high-frequency component attenuation characteristics and wide bandwidth characteristics. The resonant compensation network structure of the primary and secondary sides is symmetrical and has the function of bidirectional transmission. After being excited by the high-frequency AC voltage, the primary sides of the energy transmission coil 1 and the energy transmission coil 2 generate high-frequency AC current, which excites the high-frequency electromagnetic field so that the secondary side of the coil induces a high-frequency voltage, thereby realizing energy transfer from the primary side to the secondary side; the basic structure of the resonant compensation network of the four LCC compensations is the same. The primary side compensation coil in the first resonant compensation network L f 11 Connect to the output end of the wave blocking network and the primary compensation coil L f11 Connect capacitor C11 and C f 11 Input terminal, capacitor C11 and C f 11 The output end is connected to both ends of the primary side of the energy transmission coil 1, and the resonant compensation network on the secondary side of the energy transmission coil 1 is connected through capacitors C f 12 and capacitors C12 Connect the secondary side of the energy transmission coil 1. The electrical connection method of the coil and capacitor in the second resonant compensation network is the same as that of the first resonant compensation network: the resonant compensation network structure of the primary and secondary sides of the energy transmission coil 2 is symmetrical, and the input side of the resonant compensation network on the primary side of the energy transmission coil 2 is connected through the primary compensation coil. L f 21 Connect the wave blocking network and the primary compensation coil L f 21 The output terminals are connected to capacitor C21 and capacitor C f 21 Input terminal, capacitor C21 and capacitor C f 21 The input terminals are connected to both ends of the primary side of the energy transmission coil 2, and the resonant compensation network on the secondary side of the energy transmission coil 2 is connected through capacitors C f 22 Connect the energy transmission coil 2 secondary side with capacitor C22, capacitor C22 and capacitor C f 22 The output side is respectively compensated by the secondary side coil L f 22 The rectifier circuit and the high-frequency inverter circuit are connected, and the input side is connected to the wave-blocking network; the coils in the two resonant compensation networks are all integrated together according to a certain relative position so that the integrated coils do not interfere with each other.

[0024] The described wave-blocking network parallel resonant compensation network adopts a multi-element LC parallel circuit topology. The wave-blocking network of the primary and secondary sides is respectively connected to the LCC resonant compensation network, which has the advantage of good high-frequency component attenuation characteristics. It is used to select specific frequency components flowing into the loop, reduce interference between wireless energy transmission channels, between wireless information transmission channels, and between wireless energy transmission channels and wireless information transmission channels, and improve transmission channel isolation. The wave-blocking network of the primary side of the energy transmission coil 1 is an inductor. L s 11 and capacitorC s 11 are connected in parallel, the input end is connected to the output end of the high-frequency inverter circuit, and the output end is connected to the input end of the CLC resonant compensation network. The secondary side of the energy transmission coil 1 and the primary and secondary sides of the energy transmission coil 2 have similar wave-blocking network structures. The secondary side wave-blocking network consists of an inductor. L s 12 and capacitor C s 12 in parallel; the energy transmission coil 2 is a parallel resonant compensation network of the primary and secondary sides of the wave-blocking network, the primary side of the wave-blocking network is composed of an inductor L s 21 and capacitor C s 21 in parallel, the secondary side of the wave blocking network is composed of inductors L s 22 and capacitor C s The high-frequency AC voltage output by the inverter is used to excite two parallel-connected, double-sided LCC compensation networks. The current amplitude and phase of the two channels must be consistent.

[0025] The high-frequency inverter circuit is composed of two full-bridge inverter arms connected in parallel. Each inverter arm is composed of two power tubes connected in series. There are 8 power tubes on the primary and secondary sides of each coil, which convert the DC voltage on the input side of the inverter into a high-frequency AC voltage to excite the resonant compensation network. S 11 ~ S 14 , respectively connected in parallel, the secondary side of the energy transmission coil 1 is the power tube S 15 ~ S 18 , the primary side of the energy transmission coil 2 is the power tube S 21 ~ S 24 , the secondary side of the energy transmission coil 2 is the power tube S 25 ~ S 28 .

[0026] The input sides of the two inverter bridge arms on the primary side of the energy transmission coil 1 and the energy transmission coil 2 are connected in parallel and then connected to the DC power supply. V in 1 , and connect the bus capacitor in parallel C i1 and busbar capacitance C i2 The output side of the inverter bridge arm is drawn from the midpoint of the bridge arm, and each output end is connected to the inductor Ls 11 and capacitors C s 11 and inductance L s 21 and capacitors C s 21 The input end of the parallel choke network is connected, and the output end of the choke network is connected to the primary compensation coil. L f 11 ,capacitance C11 and capacitors C f 11 and primary compensation coil L f 21 ,capacitance C21 and capacitors C f 21 The resonant compensation network of the double-sided LCC compensation is composed, and the switching frequency of the inverter is fs The switching frequency is equal to the resonant frequency of the resonant compensation network. The output sides of the two inverter bridge arms on the secondary side of the energy transmission coil 1 and the energy transmission coil 2 are connected in parallel and then connected to the filter capacitor. C o1 and filter capacitors C o2 Get DC voltage for subsequent load R D 1 and load R D 2 Power supply; the input side of the inverter bridge arm is drawn from the midpoint of the bridge arm, and each output end is connected to the inductor L s 12 and capacitors C s 12 and inductance L s 22 and capacitors C s 22 The output end of the parallel choke network is connected, and the input end of the choke network is connected to the secondary compensation coil. L f 12 、 C12 and capacitors C f 12 and secondary compensation coil L f 22 ,capacitanceC22 and capacitors C f 22 The resonant compensation network of double-sided LCC compensation is formed.

[0027] The rectifier circuit specifically includes two high-frequency rectifiers, each of which is composed of two upper and lower rectifier diodes connected in series. The output ends of the secondary rectifier circuits are connected in parallel and are respectively connected to the load. R D 1 and load R D 2 , each coil has a total of 8 rectifier diodes on the primary and secondary sides, and the primary side of the energy transmission coil 1 is the rectifier diode D 11 ~D 14 , respectively connected in parallel to the power tube S 11 ~S 14 The secondary side of the energy transmission coil 1 is the rectifier diode D 15 ~D 18 , respectively connected in parallel to the power tube S 15 ~S 18 The primary side of the energy transmission coil 2 is the rectifier diode D 21 ~D 24 , respectively connected in parallel to the power tube S 21 ~S 24 The secondary side of the energy transmission coil 2 is the rectifier diode D 25 ~D 28 , respectively connected in parallel to the power tube S 25 ~S 28 superior.

[0028] Figure 3 The topology of the wireless information transmission channel in the system of the present invention is shown. It primarily consists of a high-frequency inverter circuit, a wave-blocking network, a resonant compensation network, and a rectifier circuit. The midpoint of each rectifier circuit's bridge arm is connected to two resonant compensation networks. The high-frequency AC voltage output by the resonant compensation network is rectified by a full-bridge and then filtered by a filter capacitor to generate a DC voltage for powering subsequent loads. The AC current output by the resonant compensation network is filtered by two parallel high-frequency rectifier bridges to generate a DC current for powering the loads.

[0029] The resonant compensation network adopts a double-sided CLC compensation topology, which has the advantages of good high-frequency component attenuation characteristics and wide bandwidth and constant current characteristics. The resonant compensation network structure of the primary and secondary sides is symmetrical and has the function of bidirectional transmission. After being excited by the high-frequency AC voltage, the primary sides of the information transmission coil 3 and the information transmission coil 4 generate high-frequency AC current, which stimulates the high-frequency electromagnetic field and induces high-frequency voltage on the secondary side of the coil, thereby realizing the transmission of information from the primary side to the secondary side. The basic structure of the resonant compensation network of the four CLC compensations is the same. The capacitor in the first resonant compensation network is C31 Connect to the output end of the wave blocking network, capacitor C31 Connect capacitor C f 31 and primary compensation coil L f 31 ,capacitance C f 31 and primary compensation coil L f 31 The output terminals are connected to both ends of the primary side of the information transmission coil 3. The electrical connection method of the coil and the capacitor in the second resonant compensation network is the same as that of the first resonant compensation network: the resonant compensation network on the secondary side of the information transmission coil 3 is connected through capacitors C f 32 and secondary compensation coil L f 32 Connect the 3rd secondary side of the information transmission coil and the capacitor C f 32 The output side is connected to the wave blocking network, and the output end of capacitor C32 is connected to the input end of capacitor Cf32 and the secondary compensation coil respectively. L f 32 Input end, secondary compensation coil L f 32 Connect the rectifier circuit; the information transmission coil 4 primary and secondary resonant compensation network structure is symmetrical, the primary side of the resonant compensation network through the capacitor C41 Connect to the output end of the wave blocking network, capacitor C41 Connect capacitor C f 41 and primary compensation coil L f 41 ,capacitance C f 41 and primary compensation coil L f 41The output end is connected to both ends of the primary side of the information transmission coil 4, and the resonant compensation network on the secondary side of the information transmission coil 4 is connected through capacitors C f 42 and secondary compensation coil L f 42 Connect the 4 secondary sides of the information transmission coil and the capacitor C f 42 The output side is connected to the wave blocking network, and the output end of capacitor C42 is connected to the input end of capacitor Cf42 and the secondary compensation coil respectively. L f 42 Input end, secondary compensation coil L f 42 The rectifier circuit is connected; the coils in the two resonant compensation networks are all integrated together according to a certain relative position so that the integrated coils do not interfere with each other.

[0030] The described wave-blocking network parallel resonant compensation network adopts a multi-element LC parallel circuit topology. The wave-blocking network on the primary and secondary sides is respectively connected to the CLC resonant compensation network, which has the advantage of good high-frequency component attenuation characteristics. It is used to select specific frequency components flowing into the loop, reduce interference between wireless energy transmission channels, between wireless information transmission channels, and between wireless energy transmission channels and wireless information transmission channels, and improve transmission channel isolation. The wave-blocking network on the primary side of the information transmission coil 3 is an inductor. L s 31 and capacitor C s 31 in series with the inductor L s 32 and capacitor C s 32 are connected in parallel, the input end is connected to the output end of the high-frequency inverter circuit, and the output end is connected to the input end of the CLC resonant compensation network. The secondary side of the information transmission coil 3 and the primary and secondary sides of the information transmission coil 4 have similar wave-blocking network structures: the secondary side wave-blocking network consists of an inductor L s 33 and capacitor C s 33 in series with the inductor L s 34 and capacitor C s 34 in parallel; the information transmission coil 4 is a parallel resonant compensation network of the primary and secondary sides of the wave blocking network, the primary side of the wave blocking network consists of an inductor L s 41 and capacitor C s 41 in series with the inductor Ls 42 and capacitor C s 42 in parallel, the secondary side of the wave blocking network is composed of inductors L s 43 and capacitor C s 43 in series with the inductor L s 44 and capacitor C s 44 in parallel. The high-frequency AC voltage output by the inverter is used to excite two parallel-connected, double-sided LCC compensation networks. The wave-blocking network has frequency-selective properties, reducing the impact of high-frequency components of the energy transmission channel on the information transmission channel. The operating frequency should be greater than 100 times the operating frequency of the energy transmission channel. The current amplitude and phase of the two channels must be consistent.

[0031] The high-frequency inverter circuit is composed of two full-bridge inverter arms connected in parallel. Each inverter arm is composed of two power tubes connected in series. The primary and secondary sides of each coil have a total of 8 power tubes, which convert the DC voltage on the inverter input side into a high-frequency AC voltage to excite the resonant compensation network. The primary side of the information transmission coil 3 is the power tube S 31 ~S 34 , the secondary side of the information transmission coil 3 is the power tube S 35 ~S 38 , the primary side of the information transmission coil 4 is the power tube S 41 ~S 44 , the secondary side of the information transmission coil 4 is the power tube S 45 ~S 48 .

[0032] The input sides of the two inverter bridge arms of the information transmission coil 3 and the information transmission coil 4 are connected in parallel and then connected to the DC power supply. V in 2 , and connect the bus capacitor in parallel C i3 and busbar capacitance C i4 The output side of the inverter bridge arm is drawn from the midpoint of the bridge arm, and each output end is connected to the inductor L s 31、 capacitance C s 31 and capacitors C s 32 and inductance L s 41、 capacitance C s 41 and capacitorsC s 42 The input end of the wave-blocking network is connected to the capacitor, and the output end of the wave-blocking network is connected to the capacitor. C31、 Primary compensation coil L f 31 and capacitors C f 31 and capacitors C41、 Primary compensation coil L f 41 and capacitors C f 41 The output sides of the two inverter bridge arms on the secondary sides of the information transmission coil 3 and the information transmission coil 4 are connected in parallel and then connected to the filter capacitor. C o3 and filter capacitors C o4 Get DC voltage for subsequent load R D 3 and load R D 4 Power supply; the input side of the inverter bridge arm is drawn from the midpoint of the bridge arm, and each output end is connected to the capacitor C s 33、 inductance L s 33 and capacitors C s 34 and capacitors C s 43、 inductance L s 43 and capacitors C s 44 The output end of the wave-blocking network is connected to the capacitor, and the input end of the wave-blocking network is connected to the capacitor. C f 32、 capacitance C32 and secondary compensation coil L f 32 and capacitors C f 42、 capacitance C42 and secondary compensation coil L f42 The resonant compensation network of double-sided CLC compensation is formed.

[0033] The high-frequency inverter circuit is composed of two full-bridge inverter arms connected in parallel. Each inverter arm is composed of two power tubes connected in series. The primary and secondary sides of each coil have a total of 8 power tubes, which convert the DC voltage on the inverter input side into a high-frequency AC voltage to excite the resonant compensation network. The primary side of the information transmission coil 3 is the power tube S 31 ~S 34 , the secondary side of the information transmission coil 3 is the power tube S 35 ~S 38 , the primary side of the information transmission coil 4 is the power tube S 41 ~S 44 , the secondary side of the information transmission coil 4 is the power tube S 45 ~S 48 .

[0034] The rectifier circuit specifically includes two high-frequency rectifiers, each of which is composed of two upper and lower rectifier diodes connected in series. The output ends of the secondary rectifier circuits are connected in parallel and are respectively connected to the load. R D 3 and load R D 4 , each coil has a total of 8 rectifier diodes on the primary and secondary sides, and the primary side of the information transmission coil 3 is a rectifier diode D 31 ~D 34 , respectively connected in parallel to the power tube S 31 ~S 34 The secondary side of the information transmission coil 3 is the rectifier diode D 35 ~D 38 , respectively connected in parallel to the power tube S 35 ~S 38 The primary side of the information transmission coil 4 is the rectifier diode D 41 ~D 44 , respectively connected in parallel to the power tube S 41 ~S 44 The secondary side of the information transmission coil 4 is the rectifier diode D 45 ~D 48 , respectively connected in parallel to the power tube S 45 ~S 48 superior.

[0035] To improve the power level of wireless energy and information synchronous transmission systems, a multi-channel parallel topology is often used to increase the information transmission rate. However, the channels are often coupled to each other, affecting the stability of energy and information transmission. The first integration method greatly increases the difficulty of circuit analysis due to the mutual coupling between multiple coils. At the same time, due to the mutual influence between the coils, the system resonant frequency will change, thereby losing the original excellent constant voltage or constant current characteristics of the resonant topology, and at the same time causing an increase in system reactive power. Therefore, the second coil integration method is often used. However, using the second coil integration method, the existing method can only achieve the decoupling integration of the compensation coil and the main coil on the same side of a single double-sided LCC compensation resonant compensation network system. There is only one compensation coil and one main coil on the same side. Currently, there is no method to achieve the decoupling integration of the compensation coil and the main coil on the same side of a high-isolation double-sided LCC resonant compensation network system connected in parallel, where there are two compensation coils and two main coils on the same side.

[0036] The specific relative positions of the energy transmission coils / energy transmission coils on the same side are as shown in the reference Figure 3 As shown, Figure 3 The figure shows a top view of the primary energy transfer coil / energy transfer coil. The coils on the same side are symmetrical about the Y axis.

[0037] The energy transmission coils 1 and 2, and the information transmission coils 3 and 4 are all DD-type coils, or planar coils, to reduce the impact of high-frequency energy components on the information transmission channel. Energy transmission coils 1 and 2 are orthogonal to each other, while information transmission coils 3 and 4 are orthogonal to each other. The minimum distance between the coils should be greater than zero. The compensation coils on the same side are placed with a certain overlap to achieve decoupling between the compensation coils. A DD-polarity main coil and a rectangular, non-polarity main coil on the same side are placed vertically and overlapped with each other, with their center points aligned. This arrangement allows for mutual decoupling of the main coils on the same side. First, the vertical center points of the DD-polarity energy transmission coils coincide, the coils are of the same size, and the angles are 90 degrees apart. The horizontal center point distance should be such that the two energy transmission coils do not overlap. The compensation coils on the same side are placed close to the edges of the main coils on the X-axis to achieve mutual decoupling between the compensation coils and the main coils on the same side. The integrated coil structure, from top to bottom, is an aluminum plate shielding layer, a strip ferrite core, a DD polarity main coil, a rectangular plane non-polarity main coil, and two overlapping DD polarity compensation coils. The integrated structure of the primary and secondary coils is consistent.

[0038] The centerline of the energy transmission coil 1 and the energy transmission coil 2 is line 1, and their center projections fall on line 1. The centerline of the information transmission coil 3 and the information transmission coil 4 also fall on line 1. The vertical center projections of the information transmission coils should fall on the center axis of the two energy transmission coils. This placement ensures that the total magnetic flux generated by the DD coil passing through the information transmission coil is zero, thereby decoupling the energy transmission coil from the information transmission coil. The information transmission coil 3 and coil 4 are placed overlapping on the center axis of the energy transmission coil 1 and coil 2.

[0039] All coils on the same side of the magnetic coupling communication system of the present invention are decoupled and integrated, the coils on the same side share a magnetic core, and the energy coils, the information transmission coils, and the energy transmission coils and information transmission coils among all coils are decoupled from each other and do not interfere with each other, thereby reducing the volume of the magnetic coupling wireless energy information synchronous transmission system and saving magnetic cores.

[0040] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some embodiments of its application. A person skilled in the art may make several modifications and improvements without departing from the inventive concept of the present invention, and all of these modifications and improvements fall within the scope of protection of the present invention.

Claims

1. A high-isolation wireless energy information synchronous transmission system, characterized by: Including wireless energy transmission channel and wireless information transmission channel; The wireless energy transmission channel includes an energy transmission coil 1 and an energy transmission coil 2, a resonant compensation network connecting the primary and secondary sides of the energy transmission coil 1 and the energy transmission coil 2, and a wave-blocking network connecting the resonant compensation network. It also includes a high-frequency inverter circuit and a rectifier circuit connecting the resonant compensation network and the wave-blocking network. The high-frequency inverter circuit on the primary side of the energy transmission coil 1 is connected in parallel with the high-frequency inverter circuit on the primary side of the energy transmission coil 2. The high-frequency inverter circuit on the secondary side of the energy transmission coil 1 and the high-frequency inverter circuit on the secondary side of the energy transmission coil 2 are both connected to the load. The resonant compensation network adopts a double-sided LCC compensation topology structure. The resonant compensation network structure of the primary and secondary sides is symmetrical. The wave-blocking network adopts an LC parallel circuit topology structure for selecting specific frequency components flowing into the circuit. The wireless information transmission channel includes an information transmission coil 3 and an information transmission coil 4, a resonant compensation network connecting the primary and secondary sides of the information transmission coil 3 and the information transmission coil 4, and a wave-blocking network connecting the resonant compensation network. It also includes a high-frequency inverter circuit and a rectifier circuit connecting the resonant compensation network and the wave-blocking network. The high-frequency inverter circuit on the primary side of the information transmission coil 3 is connected in parallel with the high-frequency inverter circuit on the primary side of the information transmission coil 4. The high-frequency inverter circuit on the secondary side of the information transmission coil 3 and the high-frequency inverter circuit on the secondary side of the information transmission coil 4 are both connected to the load. The resonant compensation network adopts a double-sided CLC compensation topology structure. The resonant compensation network structure of the primary and secondary sides is symmetrical. The wave-blocking network adopts an LC parallel circuit topology structure for selecting specific frequency components flowing into the circuit. The energy transmission coil 1 and coil 2, the information transmission coil 3 and coil 4 are all DD type coils, the energy transmission coil 1 and the energy transmission coil 2 are orthogonal to each other, and the information transmission coil 3 and the information transmission coil 4 are orthogonal to each other; The high-frequency inverter circuit is composed of two full-bridge inverter arms connected in parallel. Each inverter arm is composed of two upper and lower power tubes connected in series. The DC voltage on the input side is converted into a high-frequency AC voltage for exciting the resonant compensation network. The rectifier circuit includes two high-frequency rectifiers. Each high-frequency rectifier is composed of two upper and lower rectifier diodes connected in series. A magnetic core is provided under the energy transmission coil 1 and the energy transmission coil 2, and an aluminum plate is placed under the magnetic core.

2. A high-isolation wireless energy information synchronous transmission system according to claim 1, characterized in that: The resonant compensation network structure of the primary and secondary sides of the energy transmission coil 1 is symmetrical, and the resonant compensation network on the primary side is connected to the primary compensation coil. L f 11 Connect to the output end of the wave blocking network and the primary compensation coil L f 11 The output terminals are connected to capacitors C11 and capacitance C f 11 ,capacitance C11 and capacitors C f 11 The output end is connected to the primary side of the energy transmission coil 1, and the resonant compensation network on the secondary side of the energy transmission coil 1 is connected through capacitors C f 12 and capacitors C12 Connect the secondary side of the energy transmission coil 1; the resonant compensation network structure of the primary and secondary sides of the energy transmission coil 2 is symmetrical, and the input side of the resonant compensation network on the primary side is connected through the primary compensation coil L f 21 Connect the wave blocking network and the primary compensation coil L f 21 The output terminals are connected to capacitor C21 and capacitor C f 21 , capacitor C21 and capacitor C C f 21 The input terminals are connected to the primary side of the energy transmission coil 2, and the resonant compensation network on the secondary side of the energy transmission coil 2 is connected through capacitors C f 22 Connect the energy transmission coil 2 secondary side with capacitor C22, capacitor C22 and capacitor C f 22 The output side is respectively compensated by the secondary side coil L f 22 Connect the rectifier circuit and the high-frequency inverter circuit, and connect the wave-blocking network on the input side.

3. A high-isolation wireless energy information synchronous transmission system according to claim 1, characterized in that: The resonance compensation network structure of the primary and secondary sides of the information transmission coil 3 is symmetrical. The resonance compensation network on the primary side is connected to the capacitor. C31 Connect to the wave blocking network, capacitor C31 Connect capacitor C f 31 and primary compensation coil L f 31 ,capacitance C f 31 and primary compensation coil L f 31 The output ends are connected to the primary side of the information transmission coil 3, and the resonant compensation network on the secondary side of the information transmission coil 3 is connected through capacitors C f 32 and secondary compensation coil L f 32 Connect the 3rd secondary side of the information transmission coil and the capacitor C f 32 The output side is connected to the wave blocking network, and the output end of capacitor C32 is connected to capacitor Cf32 and the secondary compensation coil respectively. L f 32 , secondary compensation coil L f 32 Connect the rectifier circuit; the information transmission coil 4 primary and secondary resonant compensation network structure is symmetrical, the primary side of the resonant compensation network through the capacitor C41 Connect to the wave blocking network, capacitor C41 Connect capacitor C f 41 and primary compensation coil L f 41 ,capacitance C f 41 and primary compensation coil L f 41 The output ends are connected to the primary side of the information transmission coil 4, and the resonant compensation network on the secondary side of the information transmission coil 4 is connected through capacitors C f 42 and secondary compensation coil L f 42 Connect the 4 secondary sides of the information transmission coil and the capacitor C f 42 The output side is connected to the wave blocking network, and the output end of capacitor C42 is connected to capacitor Cf42 and the secondary compensation coil respectively. L f 42 , secondary compensation coil L f 42 Connect the rectifier circuit.

4. A high-isolation wireless energy information synchronous transmission system according to claim 1, characterized in that: The energy transmission coil 1 has a parallel resonant compensation network on the primary and secondary sides of the wave-blocking network. The primary side of the wave-blocking network consists of an inductor. L s 11 and capacitor C s 11 in parallel, the secondary side of the wave blocking network is composed of inductors L s 12 and capacitor C s 12 in parallel; the energy transmission coil 2 is a parallel resonant compensation network of the primary and secondary sides of the wave-blocking network, the primary side of the wave-blocking network is composed of an inductor L s 21 and capacitor C s 21 in parallel, the secondary side of the wave blocking network is composed of inductors L s 22 and capacitor C s 22 in parallel.

5. The high-isolation wireless energy information synchronous transmission system according to claim 1, characterized in that: The information transmission coil 3 has a parallel resonant compensation network on the primary and secondary sides, and the primary side of the wave blocking network is composed of an inductor. L s 31 and capacitor C s 31 in series with the inductor L s 32 and capacitor C s 32 in parallel, the secondary side of the wave blocking network is composed of inductors L s 33 and capacitor C s 33 in series with the inductor L s 34 and capacitor C s 34 in parallel; the information transmission coil 4 is a parallel resonant compensation network of the primary and secondary sides of the wave blocking network, the primary side of the wave blocking network consists of an inductor L s 41 and capacitor C s 41 in series with the inductor L s 42 and capacitor C s 42 in parallel, the secondary side of the wave blocking network is composed of inductors L s 43 and capacitor C s 43 in series with the inductor L s 44 and capacitor C s 44 in parallel.

6. The high-isolation wireless energy information synchronous transmission system according to claim 1, characterized in that: The input sides of the two inverter bridge arms of the energy transmission coil 1 and the energy transmission coil 2 are connected in parallel and then connected to the DC power supply. V in 1 , and connect the bus capacitor in parallel C i1 and busbar capacitance C i2 The output side of the inverter bridge arm is drawn from the midpoint of the bridge arm, and the output sides of the two inverter bridge arms on the secondary side of the energy transmission coil 1 and the energy transmission coil 2 are connected in parallel and then connected to the filter capacitor. C o1 and filter capacitors C o2 Get DC voltage for subsequent load R D 1 and load R D 2 Power supply; the output ends of the secondary rectifier circuit are connected in parallel to the load R D 1 and load R D 2 .

7. The high-isolation wireless energy information synchronous transmission system according to claim 1, characterized in that: The input sides of the two inverter bridge arms of the information transmission coil 3 and the information transmission coil 4 are connected in parallel and then connected to the DC power supply. V in 2 , and connect the bus capacitor in parallel C i3 and busbar capacitance C i4 The output side of the inverter bridge arm is drawn from the midpoint of the bridge arm, and the output sides of the two inverter bridge arms on the secondary side of the information transmission coil 3 and the information transmission coil 4 are connected in parallel and then connected to the filter capacitor. C o3 and filter capacitors C o4 Get DC voltage for subsequent load R D 3 and load R D 4 Power supply; the output ends of the secondary rectifier circuit are connected in parallel to the load R D 1 and load R D 2 .

8. A high-isolation wireless energy information synchronous transmission system according to any one of claims 1 to 7, characterized in that: The center projections of the energy transmission coil 1 and the energy transmission coil 2 fall on the center line line 1, and the center projections of the information transmission coil 3 and the information transmission coil 4 fall on the center line line 1. The information transmission coil 3 and the coil 4 overlap and are placed on the central axis position of the energy transmission coil 1 and the coil 2.

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