CN209913583U - Wide power supply range's modularization wireless power transmission system - Google Patents
Wide power supply range's modularization wireless power transmission system Download PDFInfo
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- CN209913583U CN209913583U CN201920719981.3U CN201920719981U CN209913583U CN 209913583 U CN209913583 U CN 209913583U CN 201920719981 U CN201920719981 U CN 201920719981U CN 209913583 U CN209913583 U CN 209913583U
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Abstract
The utility model provides a modularization wireless power transmission system of wide power supply range, include: the method comprises the following steps: the device comprises a transmitting end, a conductive flat plate and a plurality of receiving ends; the transmitting end provides electric energy support for the receiving end in a magnetic coupling resonant wireless electric energy transmission mode; the plurality of power transmitting coils are arranged in a rectangular array above a conductive plate. The transmitting end includes: the device comprises a transverse shaft direct-current power supply module, a transverse shaft electric energy processing module, N transverse shaft transmitting end series resonance capacitors, N transverse shaft power transmitting coils, a longitudinal shaft direct-current power supply module, a longitudinal shaft electric energy processing module, N longitudinal shaft transmitting end series resonance capacitors and N longitudinal shaft power transmitting coils; n is not less than 1 and is an integer; the receiving end includes: the power receiving coil, the receiving end are connected with a resonance capacitor and a rectification voltage stabilizing module in series. The utility model provides the high wireless charging area can provide high-efficient, quick, stable wireless power support simultaneously to the multiunit load.
Description
Technical Field
The utility model belongs to the technical field of wireless power supply, especially, relate to a modularization wireless power transmission system of wide power supply range.
Background
The existing wireless power transmission technology at least comprises the following five directions: electromagnetic induction, electromagnetic resonance, microwave, ultrasonic, and laser. The principle of the magnetic coupling resonance type wireless power transmission technology (WPT) is the same as that of tuning fork resonance: the coils arranged in a magnetic field and having the same vibration frequency can realize the electric energy transmission from one coil to the other coil due to the same vibration frequency characteristics; the method has the characteristics of long transmission distance, capability of realizing one-to-many energy transmission, low transmission efficiency and suitability for medium-distance transmission with medium power.
The existing commercialized magnetic coupling resonance type wireless power transmission technology generally has low wireless charging freedom degree, and is difficult to provide wireless charging service for a plurality of power receiving coils at the same time. For this reason, it is important to provide a WPT system capable of providing a wireless charging service with a high degree of freedom to a plurality of small electric devices at the same time.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the problem that needs to solve is, designs one set of power supply and stabilizes, easy to use maintenance, low cost, wide power supply range's modularization wireless power transmission system, for wireless power transmission system provides more clear and definite guidance in commercialization, the application of modular many loads.
The utility model discloses the technical scheme who adopts is, a modularization wireless power transmission system of wide power supply range, include: the device comprises a transmitting end, a conductive flat plate and a plurality of receiving ends;
the transmitting end provides electric energy support for the receiving end in a magnetic coupling resonant wireless electric energy transmission mode; the plurality of power transmitting coils are arranged in a rectangular array above a conductive plate.
Preferably, the transmitting end includes: the device comprises a transverse shaft direct-current power supply module, a transverse shaft electric energy processing module, N transverse shaft transmitting end series resonance capacitors, N transverse shaft power transmitting coils, a longitudinal shaft direct-current power supply module, a longitudinal shaft electric energy processing module, N longitudinal shaft transmitting end series resonance capacitors and N longitudinal shaft power transmitting coils; n is not less than 1 and is an integer;
the N transverse-axis power transmitting coils are arranged above the conductive flat plate in a transverse-axis matrix form of W rows and H columns to form a transverse-axis power transmitting coil matrix, and N is W x H; any two transverse-axis power transmitting coils in each row of the transverse-axis matrix are connected through the transverse-axis transmitting end series resonance capacitor; in the mth (m belongs to [1, W-1]) row of the transverse-axis matrix, if m is an odd number, the transverse-axis power transmitting coil of the mth row and the H column of the transverse-axis matrix are connected with the transverse-axis power transmitting coil of the (m +1) th row and the H column of the transverse-axis matrix through the transverse-axis transmitting end serial resonance capacitor; if m is an even number, the cross-axis power transmitting coil of the mth row and the 1 st column of the cross-axis matrix is connected with the cross-axis power transmitting coil of the (m +1) th row and the 1 st column of the cross-axis matrix through the cross-axis transmitting end serial resonance capacitor;
the cross shaft direct current power supply module is connected with the cross shaft electric energy processing module; the transverse-axis electric energy processing module is connected with a transverse-axis power transmitting coil of the 1 st row and the 1 st column of the transverse-axis matrix through a transverse-axis transmitting end series resonance capacitor;
the N longitudinal axis power transmitting coils are arranged above the conductive flat plate in a longitudinal axis matrix form of W rows and H columns to form a longitudinal axis power transmitting coil matrix, and N is W H; any two longitudinal axis power transmitting coils in each row of the longitudinal axis matrix are connected with the longitudinal axis transmitting end in series through the resonant capacitor; in the mth (m belongs to [1, W-1]) row of the longitudinal axis matrix, if m is an odd number, the longitudinal axis power transmitting coil in the mth row and the H column of the longitudinal axis matrix is connected with the longitudinal axis power transmitting coil in the (m +1) th row and the H column of the longitudinal axis matrix through the longitudinal axis transmitting end serial resonance capacitor; if m is an even number, the longitudinal axis power transmitting coil in the mth row and the 1 st column of the longitudinal axis matrix is connected with the longitudinal axis power transmitting coil in the (m +1) th row and the 1 st column of the longitudinal axis matrix through the longitudinal axis transmitting end serial resonance capacitor;
the longitudinal axis direct current power supply module is connected with the longitudinal axis electric energy processing module; the longitudinal axis electric energy processing module is connected with a longitudinal axis power transmitting coil of the 1 st row and the 1 st column of the longitudinal axis matrix through a longitudinal axis transmitting end series resonance capacitor;
the power transmitting coil of the transmitting end is formed by the power transmitting coil of the transverse axis in the Wth row and the H th column of the transverse axis matrix and the power transmitting coil of the longitudinal axis in the Wth row and the H th column of the longitudinal axis matrix;
preferably, the cross-axis direct-current power supply module provides a cross-axis charging voltage for the power oscillation module;
preferably, the cross-axis electric energy processing module performs inversion processing on the electric energy input by the cross-axis direct-current power supply module, excites the cross-axis power transmitting coil by high-frequency alternating current, and provides two phase differences for the cross-axis power transmitting coil
The high-frequency inverter circuit in the module always keeps the running state of a zero-voltage switch;
preferably, the ferrite core is arranged in the transverse-axis power transmitting coil to improve the magnetic gathering capacity of the coil and further improve the power transmission capacity of the system, and the transverse-axis power transmitting coil mainly plays a role in transmitting electric energy in a high-frequency alternating magnetic field mode;
preferably, the vertical axis direct current power supply module provides a vertical axis charging voltage for the power oscillation module;
preferably, the longitudinal axis electric energy processing module is used for inverting electric energy input by the longitudinal axis direct current power supply module, exciting the longitudinal axis power transmitting coil by high-frequency alternating current, and providing two phase differences for the longitudinal axis power transmitting coil
The high-frequency inverter circuit in the module always keeps the running state of a zero-voltage switch;
preferably, the longitudinal shaft power transmitting coil is internally provided with a ferrite core to improve the magnetic gathering capacity of the coil and further improve the power transmission capacity of the system, and the longitudinal shaft power transmitting coil is mainly used for transmitting electric energy in a high-frequency alternating magnetic field mode;
the section of the ferrite core can be designed into various shapes such as a rectangle, a circle, a hexagon and the like so as to form wireless charging areas with different shapes;
furthermore, the transverse axis power transmitting coil and the longitudinal axis power transmitting coil are respectively connected into two paths through conducting wires, the two paths are both of two-dimensional plane structures, the two paths are tightly wound outside the same ferrite core, the winding directions are mutually vertical, currents flowing through the two coils are equal in magnitude, and the phase difference is between the two currents
The emission magnetic field is ensured to be an orthogonal rotating magnetic field which is uniformly distributed and covers a three-dimensional space.
Preferably, the conductive flat plate can be made of a plurality of metal conductive materials such as an aluminum plate and an iron plate, the space occupied by the conductive flat plate is slightly larger than the space occupied by the transverse-axis power transmitting coil matrix and the longitudinal-axis power transmitting coil matrix, the matrix type modular transmitting coil is provided, and the geometric center of the conductive flat plate, the geometric center of the transverse-axis power transmitting coil matrix and the geometric center of the transverse-axis power transmitting coil matrix are completely overlapped and are positioned at a certain distance from the back surface of the conductive flat plate, so that the back surface magnetic field of the power transmitting coil is greatly shielded while the front surface magnetic field of the power transmitting coil is not influenced, and the efficient high-power;
preferably, the receiving end includes: the power receiving coil, the receiving end are connected with a resonance capacitor and a rectification voltage stabilizing module in series; the power receiving coil, the receiving end series resonance capacitor and the rectification voltage stabilizing module are sequentially connected;
preferably, the power receiving coil receives a magnetic field transmitted by the power transmitting coil;
preferably, the plurality of receiving ends can be distributed in a meter-level three-dimensional space range corresponding to the front surface of the conductive flat plate, and the structural parameters of the power receiving coil are completely the same as those of the power transmitting coil; the transverse axis power transmitting coil matrix and the longitudinal axis power transmitting coil matrix are both positioned between the conductive flat plate and the power receiving coil, and the transverse axis power transmitting coil, the longitudinal axis power transmitting coil and the power receiving coil are wound by copper wires; the vertical distance between the plane of the geometric center of the transverse-axis power transmitting coil and the center of the receiving coil is within 70 cm.
Preferably, the series resonance capacitor is connected in series with the matched power transmitting coil, and the series resonance capacitor and the matched power transmitting coil are in a resonance state, so that the wireless power transmission system can obtain the optimal receiving power and transmission efficiency;
preferably, the rectifying and voltage-stabilizing module is used for rectifying and stabilizing the received energy into constant direct current to supply power to a load;
preferably, the load is used for storing the electric energy output by the rectifying and voltage-stabilizing module;
the utility model has the advantages that: the power transmitting coil adopts a ferrite core with a dipole coil structure, has 60 times of magnetizing inductance compared with the same annular structure, can generate higher induction voltage and has better electric energy transmission performance; the conductive flat plate is made of metal materials such as an aluminum plate and an iron plate, and compared with ferrite, the metal conductive material has the advantages of good conductivity, light weight, low cost and the like; in addition, the eddy current of the conductive flat plate can remarkably reduce the iron core loss of the transmitting coil, further the construction of the modular wireless power transmission system capable of improving the system transmission efficiency can create ubiquitous wireless charging areas in three-dimensional space with any size and shape, and high-efficiency, quick and stable wireless power support can be provided for multiple groups of loads at the same time.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a basic topology diagram of the modular power transmitting coil of the present invention;
FIG. 3 is a basic topology diagram of the cross-axis transmit coil of the present invention;
fig. 4 is a basic topology diagram of the vertical axis transmit coil of the present invention.
Detailed Description
The utility model discloses the problem that needs to solve is, designs one set of power supply and stabilizes, easy to use maintenance, low cost, wide power supply range's modularization wireless power transmission system, for wireless power transmission system provides more clear and definite guidance in commercialization, the application of modular many loads.
The utility model discloses the technical scheme who adopts is, as shown in FIG. 1, a wide power supply range's modularization wireless power transmission system, include: the device comprises a transmitting end, a conductive flat plate and a plurality of receiving ends;
the transmitting end provides electric energy support for the receiving end in a magnetic coupling resonant wireless electric energy transmission mode; the plurality of power transmitting coils are arranged in a rectangular array above a conductive plate.
Preferably, the transmitting end includes: the device comprises a transverse shaft direct-current power supply module, a transverse shaft electric energy processing module, N transverse shaft transmitting end series resonance capacitors, N transverse shaft power transmitting coils, a longitudinal shaft direct-current power supply module, a longitudinal shaft electric energy processing module, N longitudinal shaft transmitting end series resonance capacitors and N longitudinal shaft power transmitting coils; n is not less than 1 and is an integer;
the N transverse-axis power transmitting coils are arranged above the conductive flat plate in a transverse-axis matrix form of W rows and H columns to form a transverse-axis power transmitting coil matrix, and N is W x H; any two transverse-axis power transmitting coils in each row of the transverse-axis matrix are connected through the transverse-axis transmitting end series resonance capacitor; in the mth (m belongs to [1, W-1]) row of the transverse-axis matrix, if m is an odd number, the transverse-axis power transmitting coil of the mth row and the H column of the transverse-axis matrix are connected with the transverse-axis power transmitting coil of the (m +1) th row and the H column of the transverse-axis matrix through the transverse-axis transmitting end serial resonance capacitor; if m is an even number, the cross-axis power transmitting coil of the mth row and the 1 st column of the cross-axis matrix is connected with the cross-axis power transmitting coil of the (m +1) th row and the 1 st column of the cross-axis matrix through the cross-axis transmitting end serial resonance capacitor;
the cross shaft direct current power supply module is connected with the cross shaft electric energy processing module; the transverse-axis electric energy processing module is connected with a transverse-axis power transmitting coil of the 1 st row and the 1 st column of the transverse-axis matrix through a transverse-axis transmitting end series resonance capacitor;
the N longitudinal axis power transmitting coils are arranged above the conductive flat plate in a longitudinal axis matrix form of W rows and H columns to form a longitudinal axis power transmitting coil matrix, and N is W H; any two longitudinal axis power transmitting coils in each row of the longitudinal axis matrix are connected with the longitudinal axis transmitting end in series through the resonant capacitor; in the mth (m belongs to [1, W-1]) row of the longitudinal axis matrix, if m is an odd number, the longitudinal axis power transmitting coil in the mth row and the H column of the longitudinal axis matrix is connected with the longitudinal axis power transmitting coil in the (m +1) th row and the H column of the longitudinal axis matrix through the longitudinal axis transmitting end serial resonance capacitor; if m is an even number, the longitudinal axis power transmitting coil in the mth row and the 1 st column of the longitudinal axis matrix is connected with the longitudinal axis power transmitting coil in the (m +1) th row and the 1 st column of the longitudinal axis matrix through the longitudinal axis transmitting end serial resonance capacitor;
the longitudinal axis direct current power supply module is connected with the longitudinal axis electric energy processing module; the longitudinal axis electric energy processing module is connected with a longitudinal axis power transmitting coil of the 1 st row and the 1 st column of the longitudinal axis matrix through a longitudinal axis transmitting end series resonance capacitor;
the power transmitting coil of the transmitting end is formed by the power transmitting coil of the transverse axis in the Wth row and the H th column of the transverse axis matrix and the power transmitting coil of the longitudinal axis in the Wth row and the H th column of the longitudinal axis matrix;
the cross-shaft direct-current power supply module provides a cross-shaft charging voltage for the power oscillation module;
the transverse shaft electric energy processing module is used for carrying out inversion processing on electric energy input by the transverse shaft direct current power supply module, exciting the transverse shaft power transmitting coil by high-frequency alternating current and providing two phase differences for the transverse shaft power transmitting coil
Same frequency ofAlternating current, and a high-frequency inverter circuit in the module always keeps a zero-voltage switch running state;
the transverse-shaft power transmitting coil is internally provided with a ferrite core so as to improve the magnetic gathering capacity of the coil and further improve the power transmission capacity of a system, and the transverse-shaft power transmitting coil is mainly used for transmitting electric energy in a high-frequency alternating magnetic field mode;
the longitudinal axis direct current power supply module provides longitudinal axis charging voltage for the power oscillation module;
the longitudinal axis electric energy processing module carries out inversion processing on the electric energy input by the longitudinal axis direct current power supply module, excites the longitudinal axis power transmitting coil by high-frequency alternating current, and provides two phase differences for the longitudinal axis power transmitting coilThe high-frequency inverter circuit in the module always keeps the running state of a zero-voltage switch;
the longitudinal shaft power transmitting coil is internally provided with a ferrite core so as to improve the magnetic gathering capacity of the coil and further improve the power transmission capacity of a system, and the longitudinal shaft power transmitting coil is mainly used for transmitting electric energy in a high-frequency alternating magnetic field mode;
the section of the ferrite core can be designed into various shapes such as a rectangle, a circle, a hexagon and the like so as to form wireless charging areas with different shapes;
furthermore, the transverse axis power transmitting coil and the longitudinal axis power transmitting coil are respectively connected into two paths through conducting wires, the two paths are both of two-dimensional plane structures, the two paths are tightly wound outside the same ferrite core, the winding directions are mutually vertical, currents flowing through the two coils are equal in magnitude, and the phase difference is between the two currents
The emission magnetic field is ensured to be an orthogonal rotating magnetic field which is uniformly distributed and covers a three-dimensional space.
The conductive flat plate can be made of various metal conductive materials such as an aluminum plate, an iron plate and the like, the space occupied by the conductive flat plate is slightly larger than the space occupied by the transverse-axis power transmitting coil matrix and the longitudinal-axis power transmitting coil matrix, and the geometric center of the conductive flat plate, the geometric center of the transverse-axis power transmitting coil matrix and the geometric center of the transverse-axis power transmitting coil matrix are completely superposed and positioned at a certain distance from the back surface of the conductive flat plate, so that the back surface magnetic field of the power transmitting coil is shielded greatly while the front surface magnetic field of the power transmitting coil is not influenced, and the high-efficiency high-power operation;
the receiving end includes: the power receiving coil, the receiving end are connected with a resonance capacitor and a rectification voltage stabilizing module in series; the power receiving coil, the receiving end series resonance capacitor and the rectification voltage stabilizing module are sequentially connected;
the power receiving coil receives the magnetic field transmitted by the power transmitting coil;
the plurality of receiving ends can be distributed in a meter-level three-dimensional space range corresponding to the front surface of the conductive flat plate, and the structural parameters of the power receiving coil are completely the same as those of the power transmitting coil; the transverse axis power transmitting coil matrix and the longitudinal axis power transmitting coil matrix are both positioned between the conductive flat plate and the power receiving coil, and the transverse axis power transmitting coil, the longitudinal axis power transmitting coil and the power receiving coil are wound by copper wires; the vertical distance between the plane of the geometric center of the transverse-axis power transmitting coil and the center of the receiving coil is within 70 cm.
The series resonance capacitor is connected in series with the matched power transmitting coil, and the series resonance capacitor and the matched power transmitting coil are in a resonance state, so that the wireless power transmission system can obtain the optimal receiving power and transmission efficiency;
the rectifying and voltage-stabilizing module is used for rectifying and stabilizing the received energy into constant direct current to supply power to a load;
the load is used for storing the electric energy output by the rectifying and voltage stabilizing module.
In the specific embodiment of the utility model, power transmitting coil adopts W5, H5, and N25 modular structure, and every row all has 5 identical, the power transmitting coil that has ferrite core respectively promptly, and adjacent transmitting coil interval all is 7.5 cm.
The conducting flat plate is made of an aluminum plate, and compared with ferrite, the conducting flat plate has the advantages of good conductivity, light weight, low cost and the like; in addition, the eddy current of the conductive flat plate can obviously reduce the iron core loss of the transmitting coil, so that the transmission efficiency of the system is improved;
the type of the transverse-axis direct-current power supply module is 48V direct-current power supply;
the cross-axis electric energy processing module is a double-frequency single-phase full-bridge inverter topology circuit;
the longitudinal axis direct current power supply module is selected to be a 48V direct current power supply;
the longitudinal axis electric energy processing module is selected to be a double-frequency single-phase full-bridge inverter topology circuit;
the rectification voltage stabilizing module is a rectification voltage stabilizing circuit with a UC3842 chip;
the section shape of the iron core is designed to be a rectangular structure of 10cm multiplied by 10cm, the thickness of the iron core is 16mm, the power transmitting coil of the transverse axis and the power transmitting coil of the longitudinal axis are tightly wound and covered outside the iron core, and the number of turns is 20 respectively.
The utility model discloses an among the concrete implementation mode, the shared space of electrically conductive flat board slightly is greater than the shared space of cross axle power transmitting coil matrix and axis of ordinates power transmitting coil matrix, and length, width are 100cm, and 4mm thick, electrically conductive flat board are 2mm with the planar perpendicular interval in cross axle power transmitting coil center place to guarantee when not causing the influence to transmitting coil front magnetic field, shield coil back magnetic field by a wide margin, thereby guarantee the high-power operation of high efficiency of wireless power transmission system.
The utility model discloses an among the concrete implementation mode, there are 9 receiving terminals, arranges into 3X 3's matrix form, but the distribution is in the positive meter level three-dimensional space scope that corresponds of transmitting coil, and receiving coil structural parameter is the same with transmitting coil completely.
In the specific implementation mode of the utility model, the power transmitting coil is positioned between the conductive flat plate and the power receiving coil, the power transmitting coil and the power receiving coil are both formed by winding copper wires, and the wire diameter is 1.8 mm; the vertical distance between the planes of the centers of the transmitting coil and the receiving coil is within 70 cm.
The following description of the embodiments with reference to fig. 1 to 4 includes: firstly, the cross-shaft direct-current power supply module provides electric energy support, the electric energy is subjected to inversion processing through the cross-shaft electric energy processing module, and the cross-shaft power transmitting coil is excited by high-frequency alternating current with controllable frequency; similarly, the longitudinal axis direct current power supply module provides electric energy support, the electric energy is subjected to inversion processing through the longitudinal axis electric energy processing module, and the longitudinal axis power transmitting coil is excited by high-frequency alternating current with controllable frequency. The ith transverse-axis power transmitting coil and the ith longitudinal-axis power transmitting coil are wound on the ith ferrite core together. The transverse axis power transmitting coil and the longitudinal axis power transmitting coil transmit energy in the form of a high-frequency alternating magnetic field; the receiving coil magnetic coupling resonance type wireless power transmission technology picks up electric energy from a surrounding magnetic field, and the electric energy is subjected to rectification and voltage stabilization processing by the receiving end electric energy processing module and then is supplied to a load of the wireless sensor by direct current.
The utility model has the advantages that: the construction of the modularized wireless power transmission system can create ubiquitous wireless charging areas in a three-dimensional space of 1m multiplied by 0.7m, and can provide efficient, rapid and stable wireless power support for multiple groups of loads at the same time.
Although the present specification makes more use of a transmitting terminal, a conductive plate, a plurality of receiving terminals, a cross-axis dc power supply module, a cross-axis power processing module, a cross-axis transmitting terminal series resonant capacitor, a cross-axis power transmitting coil, a longitudinal-axis dc power supply module, a longitudinal-axis power processing module, a longitudinal-axis transmitting terminal series resonant capacitor, a longitudinal-axis power transmitting coil, a power receiving coil, a receiving terminal series resonant capacitor, a rectifying and voltage-stabilizing module; the terms such as the power receiving coil, the receiving end series resonance capacitor, the rectifying and voltage stabilizing module and the like are used, but the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe the nature of the invention and should not be construed as imposing any additional limitations thereon which would depart from the spirit of the invention.
It should be understood that parts of the specification not set forth in detail are well within the prior art.
It should be understood that the above description of the preferred embodiments is given in some detail, and not as a limitation to the scope of the invention, and that various alternatives and modifications can be devised by those skilled in the art without departing from the scope of the invention as defined by the appended claims.
Claims (2)
1. A wide power range modular wireless power transfer system, comprising: the device comprises a transmitting end, a conductive flat plate and a plurality of receiving ends;
the transmitting end provides electric energy support for the receiving end in a magnetic coupling resonant wireless electric energy transmission mode; the plurality of power transmitting coils are arranged above the conductive flat plate in a rectangular array form;
the transmitting end includes: the device comprises a transverse shaft direct-current power supply module, a transverse shaft electric energy processing module, N transverse shaft transmitting end series resonance capacitors, N transverse shaft power transmitting coils, a longitudinal shaft direct-current power supply module, a longitudinal shaft electric energy processing module, N longitudinal shaft transmitting end series resonance capacitors and N longitudinal shaft power transmitting coils; n is not less than 1 and is an integer;
the N transverse-axis power transmitting coils are arranged above the conductive flat plate in a transverse-axis matrix form of W rows and H columns to form a transverse-axis power transmitting coil matrix, and N is W x H; any two transverse-axis power transmitting coils in each row of the transverse-axis matrix are connected through the transverse-axis transmitting end series resonance capacitor; in the mth (m belongs to [1, W-1]) row of the transverse-axis matrix, if m is an odd number, the transverse-axis power transmitting coil of the mth row and the H column of the transverse-axis matrix are connected with the transverse-axis power transmitting coil of the (m +1) th row and the H column of the transverse-axis matrix through the transverse-axis transmitting end serial resonance capacitor; if m is an even number, the cross-axis power transmitting coil of the mth row and the 1 st column of the cross-axis matrix is connected with the cross-axis power transmitting coil of the (m +1) th row and the 1 st column of the cross-axis matrix through the cross-axis transmitting end serial resonance capacitor;
the cross shaft direct current power supply module is connected with the cross shaft electric energy processing module; the transverse-axis electric energy processing module is connected with a transverse-axis power transmitting coil of the 1 st row and the 1 st column of the transverse-axis matrix through a transverse-axis transmitting end series resonance capacitor;
the N longitudinal axis power transmitting coils are arranged above the conductive flat plate in a longitudinal axis matrix form of W rows and H columns to form a longitudinal axis power transmitting coil matrix, and N is W H; any two longitudinal axis power transmitting coils in each row of the longitudinal axis matrix are connected with the longitudinal axis transmitting end in series through the resonant capacitor; in the mth (m belongs to [1, W-1]) row of the longitudinal axis matrix, if m is an odd number, the longitudinal axis power transmitting coil in the mth row and the H column of the longitudinal axis matrix is connected with the longitudinal axis power transmitting coil in the (m +1) th row and the H column of the longitudinal axis matrix through the longitudinal axis transmitting end serial resonance capacitor; if m is an even number, the longitudinal axis power transmitting coil in the mth row and the 1 st column of the longitudinal axis matrix is connected with the longitudinal axis power transmitting coil in the (m +1) th row and the 1 st column of the longitudinal axis matrix through the longitudinal axis transmitting end serial resonance capacitor;
the longitudinal axis direct current power supply module is connected with the longitudinal axis electric energy processing module; the longitudinal axis electric energy processing module is connected with a longitudinal axis power transmitting coil of the 1 st row and the 1 st column of the longitudinal axis matrix through a longitudinal axis transmitting end series resonance capacitor;
the power transmitting coil of the transmitting end is formed by the power transmitting coil of the transverse axis in the Wth row and the H th column of the transverse axis matrix and the power transmitting coil of the longitudinal axis in the Wth row and the H th column of the longitudinal axis matrix;
the conductive flat plate can be made of aluminum plate metal conductive materials and iron plate metal conductive materials, the space occupied by the conductive flat plate is slightly larger than the space occupied by the transverse axis power transmitting coil matrix and the longitudinal axis power transmitting coil matrix, the matrix type modular transmitting coil is arranged on the back surface of the conductive flat plate, and the geometric center of the transverse axis power transmitting coil matrix are completely superposed and positioned at a certain distance from the back surface of the conductive flat plate, so that the back surface magnetic field of the power transmitting coil is greatly shielded while the front surface magnetic field of the power transmitting coil is not influenced, and the high-efficiency high-power operation of a wireless electric energy transmission;
the receiving end includes: the power receiving coil, the receiving end are connected with a resonance capacitor and a rectification voltage stabilizing module in series; the power receiving coil, the receiving end series resonance capacitor and the rectification voltage stabilizing module are sequentially connected;
the power receiving coil receives the magnetic field transmitted by the power transmitting coil;
the plurality of receiving ends can be distributed in a meter-level three-dimensional space range corresponding to the front surface of the conductive flat plate, and the structural parameters of the power receiving coil are completely the same as those of the power transmitting coil; the transverse axis power transmitting coil matrix and the longitudinal axis power transmitting coil matrix are both positioned between the conductive flat plate and the power receiving coil, and the transverse axis power transmitting coil, the longitudinal axis power transmitting coil and the power receiving coil are wound by copper wires; the vertical distance between the plane of the geometric center of the transverse-axis power transmitting coil and the center of the receiving coil is within 70 cm;
the series resonance capacitor is connected in series with the matched power transmitting coil, and the series resonance capacitor and the matched power transmitting coil are in a resonance state, so that the wireless power transmission system can obtain the optimal receiving power and transmission efficiency;
the rectifying and voltage-stabilizing module is used for rectifying and stabilizing the received energy into constant direct current to supply power to a load;
the load is used for storing the electric energy output by the rectifying and voltage stabilizing module.
2. The wide supply range modular wireless power transfer system of claim 1, wherein:
the cross-shaft direct-current power supply module provides a cross-shaft charging voltage for the power oscillation module;
the transverse shaft electric energy processing module is used for carrying out inversion processing on electric energy input by the transverse shaft direct current power supply module, exciting the transverse shaft power transmitting coil by high-frequency alternating current and providing two phase differences for the transverse shaft power transmitting coil
The same-frequency alternating current of the alternating current,the high-frequency inverter circuit in the module always keeps a zero-voltage switch running state;
the transverse-shaft power transmitting coil is internally provided with a transverse-shaft ferrite core so as to improve the magnetic gathering capacity of the coil and further improve the power transmission capacity of a system, and the transverse-shaft power transmitting coil is mainly used for transmitting electric energy in a high-frequency alternating magnetic field mode;
the longitudinal axis direct current power supply module provides longitudinal axis charging voltage for the power oscillation module;
the longitudinal axis electric energy processing module carries out inversion processing on the electric energy input by the longitudinal axis direct current power supply module, excites the longitudinal axis power transmitting coil by high-frequency alternating current, and provides two phase differences for the longitudinal axis power transmitting coil
The high-frequency inverter circuit in the module always keeps the running state of a zero-voltage switch;
the longitudinal axis power transmitting coil is internally provided with a longitudinal axis ferrite core so as to improve the magnetic gathering capacity of the coil and further improve the power transmission capacity of a system, and the longitudinal axis power transmitting coil is mainly used for transmitting electric energy in a high-frequency alternating magnetic field mode;
the section of the ferrite core can be designed into a rectangle, a circle or a hexagon so as to form wireless charging areas with different shapes;
the transverse axis power transmitting coil and the longitudinal axis power transmitting coil are respectively connected into two passages through leads, both adopt two-dimensional plane structures, are tightly wound outside the same ferrite core, are mutually vertical in winding direction, and have equal current flowing through the two coils and phase difference
The emission magnetic field is ensured to be an orthogonal rotating magnetic field which is uniformly distributed and covers a three-dimensional space.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114825565A (en) * | 2022-04-19 | 2022-07-29 | 湖北工业大学 | Method for designing transmitting unit of dynamic wireless charging system of electric automobile |
| CN115441597A (en) * | 2022-09-22 | 2022-12-06 | 福州大学 | Modular stacking method of magnetic coupling structure of wireless power transmission system |
-
2019
- 2019-05-20 CN CN201920719981.3U patent/CN209913583U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114825565A (en) * | 2022-04-19 | 2022-07-29 | 湖北工业大学 | Method for designing transmitting unit of dynamic wireless charging system of electric automobile |
| CN114825565B (en) * | 2022-04-19 | 2024-04-19 | 湖北工业大学 | Method for designing transmitting unit of dynamic wireless charging system of electric automobile |
| CN115441597A (en) * | 2022-09-22 | 2022-12-06 | 福州大学 | Modular stacking method of magnetic coupling structure of wireless power transmission system |
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