CN109256868B - Double-receiving-end power configurable non-contact power supply system and power configuration method - Google Patents
Double-receiving-end power configurable non-contact power supply system and power configuration method Download PDFInfo
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- CN109256868B CN109256868B CN201811143820.0A CN201811143820A CN109256868B CN 109256868 B CN109256868 B CN 109256868B CN 201811143820 A CN201811143820 A CN 201811143820A CN 109256868 B CN109256868 B CN 109256868B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
Abstract
The invention provides a double-receiving-end power configurable non-contact power supply system and a power configuration method, wherein the system comprises a transmitting end, a main receiving end and an auxiliary receiving end, the transmitting end comprises a transmitting coil, an inverter module, a signal generator and a power module, the input end of the power module is connected with a power supply, the output end of the power module is connected with the inverter module, the output end of the signal generator is connected with the inverter module, the output end of the inverter module is connected with the transmitting coil, and one side of the transmitting coil is provided with a hierarchical metal foil with an adjustable inclination angle; the main receiving end and the auxiliary receiving end are respectively arranged on two sides of the transmitting coil, the auxiliary receiving end and the hierarchical metal foil are located on the same side of the transmitting coil, the main receiving end and the auxiliary receiving end respectively comprise a receiving coil, a rectifying module and an output interface, the receiving coil is coupled with the transmitting coil, the receiving coil is connected with the input end of the rectifying module, and the output end of the rectifying module is connected with the output interface. The invention solves the problem that the charging priority of a plurality of receiving ends cannot be flexibly configured.
Description
Technical Field
The invention relates to a wireless power supply system, in particular to a double-receiving-end power configurable non-contact power supply system and a power configuration method.
Background
The existing wired charging has the defects that the metal wire is connected between the mobile equipment and the power supply, inconvenience is brought when the mobile equipment is used, most of the existing wireless chargers are contact chargers, and the equipment needs to be placed on a charging plate when charging is carried out, so that the using mode is limited. The strong dependence of today on mobile devices, especially mobile phones, determines the need for contactless charging devices.
The patent publication No. CN 104638776 a discloses a non-contact mobile power supply system, which adopts a magnetic resonance technology to realize one-to-many simultaneous charging that increases the power conversion efficiency by increasing the transmission power, but has limitations in receiving-end power allocation, and when the number of receiving ends increases, the output result cannot be controlled, which inevitably brings about the situations of increased loss and simultaneously and greatly decreased power of each receiving end.
Patent publication No. CN 107425612 a discloses a magnetic resonance type wireless power transmission device with multiple receiving ends, which enables multiple receiving ends to uniformly receive the energy of a transmitting end. However, the system needs to fix the distance between the received end and the receiving end, belongs to contact type wireless power transmission, and is difficult to realize non-contact type charging behavior.
Disclosure of Invention
The invention aims to provide a double-receiving-end power configurable non-contact power supply system and a power configuration method, and aims to solve the problems that the existing non-contact power supply product is low in charging efficiency, cannot charge a plurality of wireless products and is difficult to configure the charging priority.
The invention is realized by the following steps:
on one hand, the invention provides a double-receiving-end power configurable non-contact power supply system which comprises a transmitting end and a receiving end, wherein the receiving end comprises a main receiving end and an auxiliary receiving end, the transmitting end comprises a transmitting coil, an inverter module, a signal generator and a power module, the input end of the power module is connected with a power supply, the output end of the power module is connected with the inverter module, the output end of the signal generator is connected with the inverter module, the output end of the inverter module is connected with the transmitting coil, and one side of the transmitting coil is provided with a hierarchical metal foil with an adjustable inclination angle; the transmitting coil comprises a transmitting coil, a primary receiving end, a secondary receiving end, a receiving coil, a rectifying module and an output interface, wherein the primary receiving end and the secondary receiving end are arranged on two sides of the transmitting coil respectively, the secondary receiving end and the hierarchical metal foil are located on the same side of the transmitting coil, the primary receiving end and the secondary receiving end respectively comprise the receiving coil, the rectifying module and the output interface, the receiving coil is coupled with the transmitting coil, the receiving coil is connected with the input end of the rectifying module, and the output end of the rectifying.
Further, the hierarchical metal foil is specifically a hierarchical aluminum foil.
Further, the hierarchical metal foil is sized to cover the entire transmit coil.
Further, a ferrite core is arranged between the transmitting coil and the receiving coil.
Furthermore, the transmitting end further comprises a base, a columnar support frame, an inverted L-shaped support frame and two side rails, wherein the columnar support frame, the inverted L-shaped support frame and the two side rails are fixed on the base, the transmitting coil is fixed at the top of the columnar support frame, the ferrite core is fixed at the tail end of the inverted L-shaped support frame and located in the center of the transmitting coil, the hierarchical metal foil is located between the two side rails, fixing rods are fixed on the inner sides of the two side rails, the middle parts of two opposite side edges of each layer of metal foil of the hierarchical metal foil are respectively connected with the two fixing rods, a transmission rod is attached to the inner side of one of the side rails, and the transmission rod is connected with the side edges of each.
Furthermore, the top of the transmission rod is wrapped with an iron sheet, and the top of the side rail attached with the transmission rod is provided with a magnet.
Furthermore, the input end of the power supply module is provided with a 220V power frequency alternating current input interface and a USB 6V input interface.
Further, the output interface comprises at least one of a Micro-B interface and a Type-C interface.
In another aspect, the present invention further provides a power configuration method for the dual-receiving-end power configurable contactless power supply system, including:
adjusting the transmission rod to enable each layer of metal foil of the hierarchical metal to be in a horizontal state, and uniformly allocating the charging power of the main receiving end and the auxiliary receiving end;
and adjusting the transmission rod to enable each layer of metal foil of the hierarchical metal foil to incline for a certain angle, so that the charging power of the main receiving end is greater than that of the auxiliary receiving end, and the main receiving end is in a preferential charging state.
Further, still include:
and adjusting a transmission rod, and adjusting the configuration proportion of the charging power of the main receiving end and the auxiliary receiving end by changing the size of the inclination angle of each layer of metal foil of the hierarchical metal foil.
Compared with the prior art, the invention has the following beneficial effects:
according to the double-receiving-end power configurable non-contact power supply system and the power configuration method, the output interface of the receiving end is connected with the corresponding terminal equipment, charging can be carried out, the distance limit of contact type wireless power transmission is overcome, and energy transmission can be realized within a certain range; through setting up inclination adjustable level metal forming, the problem that its priority of charging of many receiving terminals can't dispose in a flexible way is solved, when the level metal forming that is located transmitting coil one side is in the horizontality promptly, two receiving terminal energy uniform configuration, when level metal forming slope certain angle, main receiving terminal power reinforcing, vice receiving terminal power reduces, the preferential configuration to main receiving terminal power has been realized, and can be through the inclination size of regulation level metal forming, carry out the sliding configuration to the received energy size of main receiving terminal and vice receiving terminal, realize the regulation of main receiving terminal and vice receiving terminal charging power's configuration proportion. The device is simple, high in transmission efficiency, strong in scene adaptability and wide in application value.
Drawings
Fig. 1 is a schematic structural diagram of a dual-receiving-end power configurable contactless power supply system according to an embodiment of the present invention;
fig. 2 is a schematic circuit model diagram of a contactless power supply system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a fixing device for a transmitting coil according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a connection mode of the contactless power supply system according to the embodiment of the present invention in a specific use.
Description of reference numerals: the device comprises a 1-transmitting coil, a 2-ferrite core, a 3-level metal foil, a 4-receiving coil, a 5-base, a 6-columnar support frame, a 7-connecting wire, an 8-inverted L-shaped support frame, a 9-side rail, a 10-fixing rod, an 11-transmission rod, a 12-iron sheet and a 13-magnet.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a dual-receiving-end power configurable non-contact power supply system, which includes a transmitting end, a main receiving end and an auxiliary receiving end, where the transmitting end includes a transmitting coil 1, an inverter module, a signal generator and a power module, an input end of the power module is connected to a power supply, an output end of the power module is connected to the inverter module, the power module can selectively connect a 220V power frequency ac power supply or a USB 6V power supply, and convert the power frequency ac power supply or the USB 6V power supply into a dc voltage required by the inverter module to provide power for the inverter module, an output end of the signal generator is connected to the inverter module, the signal generator can be a single chip microcomputer, the single chip microcomputer outputs a control signal to the inverter module so as to change a frequency and a duty ratio of a voltage source, an output end, the inverter module converts the received direct-current voltage into alternating-current voltage, the electric energy is transmitted to the transmitting coil 1 through the LC oscillating circuit, and the transmitting coil 1 converts the electric energy into a magnetic field and transmits the magnetic field to the surrounding space. The hierarchical metal foil 3 of inclination adjustable is installed to one side of transmitting coil 1, when each layer metal foil of hierarchical metal foil 3 all inclines certain angle towards transmitting coil 1, can carry out certain blockking to the magnetic field that transmitting coil 1 produced, the magnetic field of restriction transmitting coil 1 this side, the magnetic field of corresponding other one side will strengthen, and the inclination of hierarchical metal foil 3 is big more, the restriction effect to the magnetic field is big more, the realization slides and adjusts the magnetic field at transmitting coil 1 both ends, and when each layer metal foil of hierarchical metal foil 3 all levels and sets up, there is no restriction effect to the magnetic field almost, the magnetic field uniform configuration at transmitting coil 1 both ends this moment. The structure of the layered metal foil limits the magnetic field and has little influence on the total transmission efficiency. The hierarchical metal foil 3 is preferably a hierarchical aluminum foil, which is light in weight and easy to implement. The hierarchical metal foil 3 is preferably sized to cover the entire transmitting coil 1, in particular both in height and width being smaller than the transmitting coil 1. The main receiving end comprises receiving coils 4, a rectifying module and an output interface, the structure of the auxiliary receiving end is consistent with that of the main receiving end, the two receiving coils 4 are coupled with the transmitting coil 1, the receiving coils 4 are connected with the corresponding input ends of the rectifying module, the output end of the rectifying module is connected with the corresponding output interface, the receiving coils 4 receive magnetic energy generated by the transmitting coil 1 and convert the magnetic energy into electric energy, alternating current is converted into direct current through the rectifying module, and power is supplied to terminal equipment through the output interface. The main receiving end and the auxiliary receiving end are respectively arranged at two opposite sides of the transmitting coil 1, and the coupling effect between the two receiving coils 4 is minimum at the moment, so that the power optimized transmission is realized; and the auxiliary receiving end and the hierarchical metal foil 3 are positioned on the same side of the transmitting coil 1, so that when the hierarchical metal foil 3 inclines for a certain angle, the magnetic energy received by the receiving coil 4 of the auxiliary receiving end is smaller than the magnetic energy received by the receiving coil 4 of the main receiving end, the preferential configuration of the power of the main receiving end is realized, when the hierarchical metal foil 3 is in a horizontal state, the magnetic energy received by the main receiving end and the auxiliary receiving end is the same, the main receiving end and the auxiliary receiving end are uniformly powered, the size of the received energy of the main receiving end and the auxiliary receiving end can be configured in a sliding manner by adjusting the size of the inclination angle of the hierarchical metal foil 3, and the adjustment of the configuration proportion of the charging power of the main receiving end and the auxiliary receiving end is realized.
Fig. 2 shows a circuit model of a dual-receiving-end power configurable contactless power supply system according to an embodiment of the present invention, which illustrates a basic energy transmission principle of the system, that is, a current passes through an oscillating circuit to generate a changing magnetic field near a transmitting coil 1, and the coil on an LC circuit around the magnetic field can sense the change to resonate, so as to generate a current.
Preferably, in this embodiment, a ferrite core 2 is disposed between the transmitting coil 1 and the receiving coil 4, so that the efficiency of electric energy transmission can be improved.
Further preferably, the input end of the power supply module is provided with a 220V power frequency alternating current input interface and a USB 6V input interface, and two power supply input modes are provided for selection. The output interface includes at least one of the interfaces that charge such as Micro-B interface, Type-C interface, and two output interfaces of this embodiment all include Micro-B interface and Type-C interface, can charge to cell-phone or portable power source etc..
Since the coil should have a certain rigid structure as a support, as shown in fig. 3, the present embodiment also provides a structure of the transmitting coil 1 and its fixing device. Specifically, the transmitting end further comprises a base 5, a columnar support frame 6 fixed on the base 5, an inverted L-shaped support frame 8 and two side rails 9, the transmitting coil 1 is fixed on the top of the columnar support frame 6 and is provided with a connecting wire 7 to be led out, the transmitting coil 1 is used for generating a magnetic field, and the ferrite core 2 is fixed at the tail end of the transverse extension section of the inverted L-shaped support frame 8 and is located in the center of the transmitting coil 1 so as to enhance the magnetic flux. The hierarchical metal foil 3 is positioned between the two side rails 9, the inner sides of the two side rails 9 are both fixed with fixing rods 10, the middle parts of the two opposite side edges of each layer of metal foil of the hierarchical metal foil 3 are respectively connected with the two fixing rods 10, the inner side of one side rail 9 is also provided with a transmission rod 11, the transmission rod 11 is connected with the side edge of each layer of metal foil and is positioned at the same side of the hierarchical metal foil 3 with one fixing rod 10, the transmission rod 11 is shifted up and down, so that the inclination angle of each layer of metal foil can be adjusted, preferably, a certain position at the top of the transmission rod 11 is wrapped by an iron sheet 12, the top of the side rail 9 provided with the transmission rod 11 is provided with a magnet 13, the iron sheet 12 is contacted with the magnet 13 for attraction, when no force is applied to the transmission rod 11, each layer of metal foil keeps, and adjusting the transmission rod 11 to increase the inclination angle between each layer of metal foil and the base 5, so that the charging power of the main receiving end is increased, the charging power of the auxiliary receiving end is decreased, and the main receiving end is in a preferential charging state.
The embodiment of the invention also provides a method for constructing the system and configuring power, which comprises the following steps:
step 1: a wireless energy transmission hardware platform is built, and the specific implementation comprises the following substeps:
step 1.1: and a lead is selected to wind the transmitting end coil and the main and auxiliary receiving end coils, so that the consistency of the number of turns and the shape of the three coils is ensured, and the three coils are ensured to have the same frequency.
Step 1.2: a specific transmitter coil fixture was made, which can be specifically made according to fig. 3.
Step 1.3: the connection transmitting end circuit comprises a transmitting coil with a ferrite magnetic core, a hierarchical metal foil, a full-bridge inverter, a signal generator and a power supply module.
Step 1.4: two receiving end circuits are built, and the receiving end circuits mainly comprise receiving coils, rectifying circuits and output interfaces.
Step 2: the terminal equipment respectively connected with the power supply of the transmitting terminal and the output terminal comprises the following sub-steps:
step 2.1: the transmitting terminal is directly connected with 220V alternating current or is connected with a USB interface for low voltage access.
Step 2.2: the main receiving end and the auxiliary receiving end are connected with equipment with a Type-C interface or a Micro-B interface, such as a smart phone, a mobile power supply and the like. Fig. 4 is an example of a connection mode, in which a main receiving terminal is connected to a smart phone, an auxiliary receiving terminal is connected to a mobile power supply, and the main receiving terminal and the auxiliary receiving terminal are respectively disposed on two sides of a transmitting terminal.
And step 3: the power of the main receiving end and the auxiliary receiving end is configured by shifting the transmission rod to change the inclination angle of the hierarchical metal foil. The specific implementation comprises the following substeps:
step 3.1: and adjusting the transmission rod to enable each layer of metal foil to be parallel to the base, so that the power of the main receiving end and the power of the auxiliary receiving end are basically uniformly configured, and the power of the smart phone of the main receiving end and the power of the mobile power supply of the auxiliary receiving end are the same.
Step 3.2: adjusting the transmission rod, and increasing the inclination angle between each layer of metal foil and the base, so that the charging power of the smart phone at the main receiving end is increased, and the charging power of the mobile power supply at the auxiliary receiving end is decreased. At this time, the smart phone of the main receiving end is in a priority charging state.
Step 3.3: and (3) disconnecting the mobile power interface of the auxiliary receiving end when the state of the hierarchical metal foil is unchanged, slightly increasing the charging power of the smart phone of the main receiving end, and then carrying out single-side charging on the smart phone of the main receiving end.
The invention uses the magnetic resonance type wireless energy transmission principle, energy is transmitted to a receiving coil through a transmitting coil, a ferrite magnetic core is adopted to strengthen electromagnetic signals, the optimal transmission efficiency is realized by adopting a method of bilaterally symmetrically distributing the receiving ends, the primary side and the secondary side are distinguished by adopting a method of spacing hierarchical metal foils, thereby realizing the function of distinguishing the charging priority, and the charging speed of the primary side and the secondary side can be configured in a sliding way by adjusting the inclination angle of the hierarchical metal foils. The adaptive capacity of the power supply system in an actual scene is enhanced while the higher charging efficiency is kept, and the power supply system has wide application value.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A double-receiving-end power configurable non-contact power supply system comprises a transmitting end and a receiving end, and is characterized in that: the receiving end comprises a main receiving end and an auxiliary receiving end, the transmitting end comprises a transmitting coil, an inverter module, a signal generator and a power module, the input end of the power module is connected with a power supply, the output end of the power module is connected with the inverter module, the output end of the signal generator is connected with the inverter module, the output end of the inverter module is connected with the transmitting coil, and a hierarchical metal foil with an adjustable inclination angle is arranged on one side of the transmitting coil; the main receiving end and the auxiliary receiving end are respectively arranged on two sides of the transmitting coil and are positioned on the same side of the transmitting coil with the hierarchical metal foil, the main receiving end and the auxiliary receiving end respectively comprise a receiving coil, a rectifying module and an output interface, the receiving coil is coupled with the transmitting coil, the receiving coil is connected with the input end of the rectifying module, and the output end of the rectifying module is connected with the output interface; the transmitting coil with the centre of receiving coil all disposes the ferrite core, the transmitting terminal still includes the base and is fixed in column support frame, "L" type support frame and two siding rails on the base, the transmitting coil is fixed in the top of column support frame, the ferrite core is fixed in the end of "L" type support frame just is located transmitting coil's center, level metal forming is located two between the siding rail, two the siding rail inboard all is fixed with the dead lever, the middle part on each layer metal forming's of level metal forming's relative both sides limit respectively with two the dead lever links to each other, one of them the inboard of siding rail still has the transfer line, the transfer line with each layer metal forming's of level metal forming side links to each other.
2. The dual-receive power configurable contactless power supply system of claim 1 wherein: the hierarchical metal foil is specifically a hierarchical aluminum foil.
3. The dual-receive power configurable contactless power supply system of claim 1 wherein: the hierarchical metal foil is sized to cover the entire transmit coil.
4. The dual-receive power configurable contactless power supply system of claim 1 wherein: the top of the transmission rod is wrapped with an iron sheet, and the top of the side rail attached with the transmission rod is provided with a magnet.
5. The dual-receive power configurable contactless power supply system of claim 1 wherein: the input end of the power supply module is provided with a 220V power frequency alternating current input interface and a USB 6V input interface.
6. The dual-receive power configurable contactless power supply system of claim 1 wherein: the output interface comprises at least one of a Micro-B interface and a Type-C interface.
7. A power configuration method for the dual-receiver power configurable contactless power supply system according to claim 1, comprising:
adjusting the transmission rod to enable each layer of metal foil of the hierarchical metal to be in a horizontal state, and uniformly allocating the charging power of the main receiving end and the auxiliary receiving end;
and adjusting the transmission rod to enable each layer of metal foil of the hierarchical metal foil to incline for a certain angle, so that the charging power of the main receiving end is greater than that of the auxiliary receiving end, and the main receiving end is in a preferential charging state.
8. The power configuration method of claim 7, further comprising:
and adjusting a transmission rod, and adjusting the configuration proportion of the charging power of the main receiving end and the auxiliary receiving end by changing the size of the inclination angle of each layer of metal foil of the hierarchical metal foil.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811143820.0A CN109256868B (en) | 2018-09-29 | 2018-09-29 | Double-receiving-end power configurable non-contact power supply system and power configuration method |
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| CN201811143820.0A CN109256868B (en) | 2018-09-29 | 2018-09-29 | Double-receiving-end power configurable non-contact power supply system and power configuration method |
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| US9444270B2 (en) * | 2012-08-02 | 2016-09-13 | Sandisk Technologies Llc | Wireless power transfer |
| WO2017053861A1 (en) * | 2015-09-24 | 2017-03-30 | Apple Inc. | Configurable wireless transmitter device |
| US20180123392A1 (en) * | 2016-10-31 | 2018-05-03 | Apple Inc. | Wireless Charging System With Solenoids |
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