CN109660008A - A kind of wireless power supply and electronic equipment - Google Patents
A kind of wireless power supply and electronic equipment Download PDFInfo
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- CN109660008A CN109660008A CN201910130771.5A CN201910130771A CN109660008A CN 109660008 A CN109660008 A CN 109660008A CN 201910130771 A CN201910130771 A CN 201910130771A CN 109660008 A CN109660008 A CN 109660008A
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- 239000003990 capacitor Substances 0.000 claims description 164
- 230000006837 decompression Effects 0.000 claims description 38
- 230000005669 field effect Effects 0.000 claims description 36
- 238000006243 chemical reaction Methods 0.000 claims description 33
- 230000005611 electricity Effects 0.000 claims description 15
- 230000001052 transient effect Effects 0.000 claims description 9
- 230000001629 suppression Effects 0.000 claims description 8
- 239000011358 absorbing material Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 11
- 230000008878 coupling Effects 0.000 description 12
- 238000010168 coupling process Methods 0.000 description 12
- 238000005859 coupling reaction Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000002688 persistence Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 206010021403 Illusion Diseases 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- H02J7/025—
-
- 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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- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention discloses a kind of wireless power supply and electronic equipments, wireless power supply includes power supply circuit, first coil and the second coil, the power supply circuit includes that wireless power exciting circuit and wireless power receive circuit, the wireless power exciting circuit is connect with direct-current input power supplying and the first coil, second coil is coupled with the first coil, the wireless power receives circuit and connect with second coil and power to the first component of electronic equipment, the motor of the electronic equipment transmits driving force to the first component, the first coil and second coil are set in the periphery of the motor.The present invention reduces the thickness of equipment, and improve the coefficient of coup between coil, the efficiency of transmission of wireless power increases by the way that first coil and the second coil to be arranged in the periphery of equipment motor.
Description
Technical field
The present invention relates to equipment power technique fields, in particular to a kind of wireless power supply and electronic equipment.
Background technique
For the electronic equipment with fixed part and rotating part, such as POV rotating display device, come usually using motor
Rotating part is driven, needs to guarantee that rotating part has stable power supply, but the component of high-speed rotation can not use adapter
Power supply can only be powered by fixed part to driven rotating part using particular form.The mode usually powered is two
Kind: brush power supply, wireless power, and the wireless power supply that this kind of electronic equipment uses, the coil used is mostly flatwise coil,
And it is separately mounted to the fixed part and rotating part of equipment, needing to reserve enough spaces between coil prevents from rubbing, therefore makes
Equipment integrally thickens.
Summary of the invention
The purpose of the present invention is to provide a kind of wireless power supply and electronic equipments, pass through the wireless power supply, energy
Wireless transmission effect is improved, in practical application, the thickness of equipment can be improved.
In a first aspect, the present invention provides a kind of wireless power supply, including power supply circuit, first coil and the second line
Circle, the power supply circuit include that wireless power exciting circuit and wireless power receive circuit, the wireless power exciting circuit
It is connect with direct-current input power supplying and the first coil, second coil is coupled with the first coil, the wireless confession
Electricity receives circuit and connect with second coil and to the power supply of the first component of electronic equipment, and the motor of the electronic equipment is to institute
First component transmission driving force is stated, the first coil and second coil are set in the periphery of the motor, and described
One of them in first coil and second coil is set in another outside.
In a kind of possible design of first aspect, external line is located in the first coil and second coil
Circle outside and the outer surface of motor are provided with patch made of absorbing material.
In a kind of possible design of first aspect, the wireless power exciting circuit includes that half-bridge driver integrates core
Piece, first resistor, second resistance, 3rd resistor, the 4th resistance, first diode, first capacitor, the second capacitor, third capacitor,
4th capacitor, the 5th capacitor, the 6th capacitor, the first field-effect tube and the second field-effect tube, the half-bridge driver integrate core
The first end of piece connects one end of the first resistor, and the other end of the first resistor connects the direct-current input power supplying, institute
The second end for stating half-bridge driver integrated chip connects one end of the second resistance, and the other end of the second resistance connects institute
State one end of first capacitor and the third end of the half-bridge driver integrated chip, the of the half-bridge driver integrated chip
One end connects one end of second capacitor, the other end of the first capacitor, the other end of second capacitor and described
4th end of half-bridge driver integrated chip is grounded, the 5th end of the half-bridge driver integrated chip and the 3rd resistor
One end connection, the other end of the 3rd resistor connect with the grid of first field-effect tube, the half-bridge driver collection
Connect at the 6th end of chip with the first end of the third capacitor, the 7th end of the half-bridge driver integrated chip with it is described
One end of 4th resistance connects, and the other end of the 4th resistance is connect with the grid of second field-effect tube, the half-bridge
8th end of driver integrated chip is connect with one end of the 4th capacitor, the other end of the 4th capacitor and the third
The first end of capacitor connects, and the first end of the half-bridge driver integrated chip is connect with the anode of the first diode, institute
The cathode for stating first diode is connect with the 8th end of the half-bridge driver integrated chip, the source electrode of second field-effect tube
It is connected and is connect with the first end of the third capacitor, the leakage of second field-effect tube with the drain electrode of first field-effect tube
Pole connect with the direct-current input power supplying and connect with one end of the 5th capacitor, the other end of the 5th capacitor and described the
The first end of three capacitors connects, and the first end of the third capacitor is connect with one end of the 6th capacitor, the 6th capacitor
The other end connect with one end of the first coil, the other end of the first coil, the third capacitor second end with
And the source grounding of first field-effect tube.
In a kind of possible design of first aspect, the wireless power supply further includes single-chip microcontroller, the single-chip microcontroller
For to the wireless power exciting circuit output pwm signal, the wireless power exciting circuit to include the 5th resistance, the 6th electricity
Resistance, the 7th resistance, the 8th resistance, the 7th capacitor, the 8th capacitor, the 9th capacitor, the first triode, the second triode, the three or three
The output end of pole pipe, the second diode and third field-effect tube, one end of the 5th resistance and single-chip microcontroller connects, and described the
The other end of five resistance is connect with the base stage of first triode, and the 7th capacitor is connected in parallel on the 5th resistance both ends,
One end of 6th resistance is connect with the base stage of first triode, the other end and described first of the 6th resistance
The emitter of triode is grounded, the base of the collector of first triode and the 7th resistance, second triode
The connection of the base stage of pole and the third transistor, the other end of the 7th resistance, second triode collector with
Direct-current input power supplying connection, the emitter of the third transistor are connect with the emitter of second triode, the third
The grounded collector of triode, the emitter of the third transistor are connect with one end of the 8th capacitor, the 8th electricity
One end, the cathode of second diode and the grid of the third field-effect tube of the other end of appearance and the 8th resistance
Connection, the other end of the 8th resistance, the source electrode of the positive and described third field-effect tube of second diode connect
The drain electrode on ground, the third field-effect tube is connect with one end of the first coil, the other end of the first coil with it is described
Direct-current input power supplying connection, the 9th capacitor are connected in parallel on the both ends of the first coil.
In a kind of possible design of first aspect, it includes rectification circuit, transient state suppression that the wireless power, which receives circuit,
Diode and decompression converting circuit processed, the input terminal of the rectification circuit are connect with second coil, for by described the
Alternating current in two coil is converted to direct current, the first output end of the rectification circuit and the one of the Transient Suppression Diode
The connection of the input terminal of end and the decompression converting circuit, the other end ground connection of the Transient Suppression Diode, the rectified current
The second output terminal on road is grounded, and the output end of the decompression converting circuit is connect with the first component, the decompression conversion electricity
Road is for low-voltage dc power supply needed for the high-voltage DC power supply that the rectification circuit exports is converted to the first component.
In a kind of possible design of first aspect, the rectification circuit includes third diode, the 4th diode,
Five diodes, the 6th diode, the tenth capacitor and the 11st capacitor, the cathode of the third diode and the described 4th 2
The anode of pole pipe is connect with the first end of second coil, and the anode of the third diode and the 5th diode are just
Pole connection, the cathode of the 4th diode connect with the cathode of the 6th diode, the cathode of the 5th diode with
And the anode of the 6th diode is connect with the second end of second coil, the tenth capacitor is connected in parallel on the described 5th 2
Pole pipe both ends, the 11st capacitor are connected in parallel on the 6th diode both ends, and the cathode of the 4th diode is described whole
First output end of current circuit, the second output terminal of the just extremely described rectification circuit of the 5th diode.
In a kind of possible design of first aspect, the decompression converting circuit includes decompression conversion chip, the 12nd
Capacitor, the 13rd capacitor, the 14th capacitor, the 15th capacitor, the 16th capacitor, the 17th capacitor, the 18th capacitor, the 9th electricity
The first end of resistance, the tenth resistance, eleventh resistor, twelfth resistor and the first inductance, the decompression conversion chip connects institute
State the first output end of rectification circuit, the second end of the decompression conversion chip connects one end of the 12nd capacitor, and the described tenth
The other end of two capacitors connects the third end of the decompression conversion chip, the third end of the decompression conversion chip and the first inductance
First end connection, it is described decompression conversion chip the 4th end and the 9th resistance first end and the tenth resistance first end connect
It connects, the 5th end of the decompression conversion chip is connect with the first end of the first end of the 13rd capacitor and the 14th capacitor, institute
The first end of the second end and eleventh resistor of stating the 13rd capacitor connects, the 6th end and the 12nd of the decompression conversion chip
The first end of resistance connects, and the one of one end and the 16th capacitor of the first end for being depressured conversion chip and the 15th capacitor
End connection, the other end of the 15th capacitor, the other end of the 16th capacitor, the twelfth resistor second end,
Decompression the 7th end of conversion chip, the second end of the 14th capacitor, the second end of the eleventh resistor and the institute
The second end for stating the 9th resistance is grounded, and the second end of the second end of first inductance and the tenth resistance is with the tenth
The anode connection of seven capacitors, the cathode ground connection of the 17th capacitor, the 18th capacitor are connected in parallel on the 17th capacitor both ends,
The second end of first inductance is powered to the first component.
Second aspect, the present invention provide a kind of electronic equipment, including motor, the first component and such as first aspect and the
Wireless power supply described in any possible design in one side, the motor transmits driving force to the first component, described
Wireless power supply is used to power to the first component.
In a kind of possible design of second aspect, the first component is that lamp bar and the control lamp bar shine
Control panel, the motor are separately connected the lamp bar and the control panel, for driving the lamp bar and the control panel
It rotates, wireless power receives circuit and connect respectively with the lamp bar and the control panel in the wireless power supply, is used for
It powers to the lamp bar and control panel.
In a kind of possible design of second aspect, the motor is brushless disk motor.
Compared with prior art, wireless power supply provided by the invention will be set in equipment electricity in two coupling coils
The periphery of machine, and mutually inside and outside between two coils be arranged, on the one hand, increase the degree of coupling between coil, carry out it is wireless
When energy transmission, the efficiency of wireless transmission is effectively improved, reduces energy loss；On the other hand, using the wireless power supply pair
The rotating part of electronic equipment is powered, it is ensured that while wireless power power, also can be reduced device thickness.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of embodiment of the present invention
Attached drawing be briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not to be seen as
It is the restriction to range, it for those of ordinary skill in the art, without creative efforts, can be with root
Other relevant attached drawings are obtained according to these attached drawings.
Fig. 1 shows the connection schematic diagram of wireless power supply provided by the present invention；
Fig. 2 shows the structural schematic diagrams of coil of the present invention and motor；
Fig. 3 shows the circuit diagram of wireless power exciting circuit provided by the present invention；
Fig. 4 shows another circuit diagram of wireless power exciting circuit provided by the present invention；
Fig. 5 shows the circuit diagram that wireless power provided by the present invention receives circuit；
Icon: rectification circuit -101；Decompression converting circuit -102.
Specific embodiment
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually exist
The component of the embodiment of the present invention described and illustrated in attached drawing can be arranged and be designed with a variety of different configurations herein.Cause
This, is not intended to limit claimed invention to the detailed description of the embodiment of the present invention provided in the accompanying drawings below
Range, but it is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that the instruction such as term " on ", "lower", "left", "right", "inner", "outside"
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings or the invention product using when usually put
Orientation or positional relationship, be merely for convenience of description of the present invention and simplification of the description, rather than the device of indication or suggestion meaning
Or element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.
In the description of the present invention, it is also necessary to explanation, herein, such as first and second or the like relationship art
Language is only used to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying this
There are any actual relationship or orders between a little entities or operation.The terms such as term "horizontal", "vertical", " pendency "
It is not offered as requiring component abswolute level or pendency, but can be slightly tilted.As "horizontal" only refers to that its direction is opposite " perpendicular
It is more horizontal for directly ", it is not to indicate that the structure is had to fully horizontally, but can be slightly tilted.Term " includes ",
"comprising" or any other variant thereof is intended to cover non-exclusive inclusion so that include a series of elements process,
Method, article or equipment not only include those elements, but also including other elements that are not explicitly listed, or are also wrapped
It includes as elements inherent to such a process, method, article, or device.In the absence of more restrictions, by sentence " including
One ... " limit element, it is not excluded that there is also another in the process, method, article or apparatus that includes the element
Outer identical element.For the ordinary skill in the art, above-mentioned term can be understood in the present invention with concrete condition
Concrete meaning.
With reference to the accompanying drawing, it elaborates to some embodiments of the present invention.In the absence of conflict, following
Feature in embodiment and embodiment can be combined with each other.
First embodiment
The present embodiment provides a kind of wireless power supply, which is used to wirelessly supply for certain rotatable parts of electronic equipment
Electricity, the electronic equipment include motor and the driven first component, and wherein fixed part of the motor as the equipment, is driven
Rotating part of the first component as the equipment, motor can directly or indirectly transmit driving force to the first component, make first
Part can be rotated or be rotated.
Fig. 1 shows the connection schematic diagram of the wireless power supply, including power supply circuit, first coil and the second line
Circle, power supply circuit include that wireless power exciting circuit and wireless power receive circuit, and wireless power exciting circuit and direct current are defeated
Enter power supply and first coil connection, intercouples between the second coil and first coil, by coupling, by wireless power
The energy transmission of exciting circuit receives in circuit to wireless power, and wireless power receives circuit and connect with the second coil and according to the
The energy that two coil coupling obtains is powered to the first component for the equipment being attached thereto, and first coil, the second coil are set in
The periphery of equipment motor.
The space structure schematic diagram of first coil, the second coil and motor in the wireless power supply is shown in Fig. 2,
In a coil be set in the outside of another coil, this kind of mode can be improved the degree of coupling between coil, reduce wireless pass
The device can be applied to the electronic equipment with fixed part and rotating part, that is to say, that by it by energy loss when defeated
It is mounted at the rotation connection of the electronic equipment and carries out wireless power for its rotatable parts, also can when improving radio transmission efficiency
Reduce device thickness.
It optionally, is readily available better wireless transmission effect, in coil that can be internally positioned in two coils
Side is provided with patch made of absorbing material on the outside of external coil, these patches can absorb or substantially weaken projection
To the electromagnetic wave energy on its surface, so that magnetic field energy be effectively prevent to leak, and can further increase between two coils
The coefficient of coup since two coils are set in the outside of motor, can be located at outside when patch is arranged in a practical situation
Patch made of ferrite or alloy absorbing material is pasted in the outside of coil and the outer surface of motor, can also be at top and bottom
Identical patch is also pasted in portion, in addition to this, is prevented magnetic field energy from leaking and is certainly not limited to the mode of above-mentioned stickup patch, can also
To fire the ferrite of similar effect in the form of die sinking.
First coil and the second coil can be made of the coiling of multiply silk-covered wire, and the internal resistance of coil is reduced with this, is subtracted
Power loss on small conducting wire, in actual application, since first coil and the second coil are set in motor periphery, shape
At the structure of similar concentric circles, reduced as far as possible under the premise of can ensure actual installation precision by adjusting the position of two coils
The spacing of two coils can be further improved the degree of coupling between coil.
In the present embodiment, the input of wireless power supply is DC voltage input, is exported as direct voltage output, wireless confession
The DC voltage change of input is the AC signal of specific frequency by electric excitation circuit, and signal is exported to by first coil and electricity
In the LC resonance circuit for holding composition, the second coil is transferred energy to by magnetic field coupling, wireless power receives circuit according to the
The AC signal that two coil is coupled to receive, power supply signal needed for being converted into the first component, is powered for it.
It optionally, is a kind of circuit implementations of wireless power exciting circuit, including half-bridge driver refering to Fig. 3, Fig. 3
Integrated chip U1, first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, first diode D1, first capacitor
C1, the second capacitor C2, third capacitor C3, the 4th capacitor C4, the 5th capacitor C5, the 6th capacitor C6, the first field-effect tube M1 and
Second field-effect tube M2, the model of half-bridge driver integrated chip U1 is by taking IR2153 as an example in the present embodiment, the first end VCC of U1
One end of first resistor R1 is connected, the other end of first resistor R1 connects direct-current input power supplying, half-bridge driver integrated chip U1
Second end RT connection second resistance R2 one end, second resistance R2 the other end connection first capacitor C1 one end and connection
First end VCC the second capacitor of connection C2 of the third end CT of half-bridge driver integrated chip U1, half-bridge driver integrated chip U1
One end, the 4th end of the other end of first capacitor C1, the other end of the second capacitor C2 and half-bridge driver integrated chip U1
COM is grounded, and the 5th end LO of half-bridge driver integrated chip U1 is connect with one end of 3rd resistor R3, and 3rd resistor R3's is another
One end is connect with the grid of the first field-effect tube M1, and the of the 6th end VS and third capacitor C3 of half-bridge driver integrated chip U1
One end connection, the 7th end HO of half-bridge driver integrated chip U1 are connect with one end of the 4th resistance R4, and the 4th resistance R4's is another
One end is connect with the grid of the second field-effect tube M2, and the one of the 8th end VB and the 4th capacitor C4 of half-bridge driver integrated chip U1
End connection, the other end of the 4th capacitor C4 are connect with the first end of third capacitor C3, and the first of half-bridge driver integrated chip U1
End VCC is connect with the anode of first diode D1, the cathode of first diode D1 and the 8th of half-bridge driver integrated chip U1
VB connection is held, the source electrode of the second field-effect tube M2 is connected with the drain electrode of the first field-effect tube M1 and the first end with third capacitor C3
Connection, the drain electrode of the second field-effect tube M2 connect with direct-current input power supplying and connect with one end of the 5th capacitor C5, the 5th electricity
The other end for holding C5 is connect with the first end of third capacitor C3, and the first end of third capacitor C3 and one end of the 6th capacitor C6 connect
It connecing, the other end of the 6th capacitor C6 is connect with one end of first coil L1, and the of the other end of first coil L1, third capacitor C3
The source grounding of two ends and the first field-effect tube M1.
Transmitting coil of the first coil L1 as wireless power constitutes LC series resonant circuit with the 6th capacitor C6.Half-bridge
Driver integrated chip U1 alternately opens two metal-oxide-semiconductors of M1, M2 with fixed frequency, thus at LC resonance circuit both ends plus fixation
Frequency it is ac-excited.The output frequency of half-bridge driver integrated chip U1 is adjusted to the resonance of LC resonance circuit in circuit
Point is nearby and slightly above resonance point, it is ensured that when loading variation, driving frequency will not be equal to or less than first coil L1 and the 6th
The overall resonance frequency of capacitor C6, while also can guarantee that entire wireless power supply system can export enough power.
Refering to Fig. 4, Fig. 4 is another circuit implementations of wireless power exciting circuit provided in this embodiment, the nothing
Line power supply unit further includes single-chip microcontroller, and single-chip microcontroller is used for wireless power exciting circuit output pwm signal, wireless power excitation electricity
Road includes the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 7th capacitor C7, the 8th capacitor C8, the 9th
Capacitor C9, the first triode Q1, the second triode Q2, third transistor Q3, the second diode D2 and third field-effect tube M3,
One end of 5th resistance R5 and the output end of single-chip microcontroller connect, and receive the pwm signal of single-chip microcontroller output, the 5th resistance R5's is another
End is connect with the base stage of the first triode Q1, and the 7th capacitor C7 is connected in parallel on the 5th both ends resistance R5, one end of the 6th resistance R6 and
The base stage of first triode Q1 connects, and the emitter of the other end of the 6th resistance R6 and the first triode Q1 are grounded, and first
The collector of triode Q1 is connect with the base stage of the 7th resistance R7, the base stage of the second triode Q2 and third transistor Q3, the
The other end of seven resistance R7, the second triode Q2 collector connect with direct-current input power supplying, the emitter of third transistor Q3
It is connect with the emitter of the second triode Q2, the grounded collector of third transistor Q3, the emitter of third transistor Q3 and
One end of eight capacitor C8 connects, one end of the other end of the 8th capacitor C8 and the 8th resistance R8, the second diode D2 cathode with
And the grid connection of third field-effect tube M3, the other end of the 8th resistance R8, the anode of the second diode D2 and third field effect
Should pipe M3 source grounding, the drain electrode of third field-effect tube M3 connect with one end of first coil L1, and first coil L1's is another
One end is connect with direct-current input power supplying, and the 9th capacitor C9 is connected in parallel on the both ends of first coil L1.
It is another scheme of wireless power exciting circuit shown in Fig. 4, the program uses the pwm signal of single-chip microcontroller output
Drive metal-oxide-semiconductor, the pwm signal of single-chip microcontroller output passes through the amplifying circuit of Q1, Q2, Q3 composition, may amplify the signal to power
The grid of NMOS tube M3 makes signal level be enough to drive the on-off of NMOS tube M3, the drain electrode of M3 be connected to by first coil L1 with
The LC resonance circuit of patch capacitor C9 composition, completes the driving to coil with this.It is identical with above scheme to be, adjustment PWM letter
Number frequency and duty ratio, make frequency close to the resonance point and slightly above resonance point of LC resonance circuit, and duty ratio keeps 50%,
Ensuring when loading variation, driving frequency will not be equal to or less than the overall resonance frequency of first coil L1 and the 9th capacitor C9,
Guarantee that entire wireless power supply system can export enough power simultaneously.
Above provide two kinds of wireless power exciting circuits, it should be noted that due to power P=UI=on coil
I2R, therefore while adjusting output power, the voltage amplitude of exchange resonance is improved, in the identical situation of power, as much as possible
The electric current flowed through in coil is reduced, the electrical loss on Coil resistance can be reduced.
It optionally, is a kind of circuit implementations that wireless power receives circuit, including rectification circuit refering to Fig. 5, Fig. 5
101, Transient Suppression Diode TVS and decompression converting circuit 102, the input of rectification circuit 101 are connect with the second coil L2, are used
In the alternating current in the second coil L2 is converted to direct current, the first output end and Transient Suppression Diode of rectification circuit 101
One end and decompression converting circuit 102 input terminal connection, Transient Suppression Diode the other end ground connection, rectification circuit 101
Second output terminal ground connection, the output end of decompression converting circuit 102 is connect with the first component, for exporting rectification circuit 101
High-voltage DC power supply be converted to the first component needed for low-voltage dc power supply, and be powered for the first component.
Specifically, rectification circuit 101 includes third diode D3, the 4th diode D4, the 5th diode D5, the six or two pole
The anode of pipe D6, the tenth capacitor C10 and the 11st capacitor C11, the cathode of third diode D3 and the 4th diode D4 with
The first end of second coil L2 connects, and the anode of third diode D3 is connect with the anode of the 5th diode D5, the 4th diode
The cathode of D4 is connect with the cathode of the 6th diode D6, the anode of the cathode of the 5th diode D5 and the 6th diode D6 and the
The second end of two coil L2 connects, and the tenth capacitor C10 is connected in parallel on the 5th both ends diode D5, and the 11st capacitor C11 is connected in parallel on the
Six both ends diode D6, the cathode of the 4th diode D4 are the first output end of rectification circuit 101, the anode of the 5th diode D5
For the second output terminal of rectification circuit 101.
Rectification circuit 101 is rectified using two capacitors of tetra- diodes of D3, D4, D5, D6 and C10, C11 in Fig. 5,
The alternating current for being transmitted to secondary side by mutual coupling coil is converted into direct current.In the present embodiment wireless power supply, in order to drop
The line loss of low coil itself need to reduce the electric current on two coils, therefore wireless power uses the scheme of high-voltage radio power supply,
Therefore, the DC voltage after 101 high-voltage rectifying of rectification circuit is also higher, needs to use for the first component after being depressured, whole
Direct current after stream is converted higher DC voltage to this by DC-DC conversion circuit, that is, decompression converting circuit 102
Low-voltage dc power supply needed for the first component.
Optionally, decompression converting circuit 102 include decompression conversion chip U2, the 12nd capacitor C12, the 13rd capacitor C13,
14th capacitor C14, the 15th capacitor C15, the 16th capacitor C16, the 17th capacitor C17, the 18th capacitor C18, the 9th electricity
Hinder R9, the tenth resistance R10, eleventh resistor R11, twelfth resistor R12 and the first inductance L3, the present embodiment decompression conversion core
The model of piece is depressured the first output end of the first end Vin connection rectification circuit 101 of conversion chip U2 by taking TPS54531 as an example,
It is depressured one end of the 12nd capacitor C12 of second end BST connection of conversion chip U2, the other end of the 12nd capacitor C12 connects drop
The third end SW of conversion chip U2, the third end SW of decompression conversion chip U2 is pressed to connect, be depressured with the first end of the first inductance L3
The 4th end FB of conversion chip U2 is connect with the first end of the first end of the 9th resistance R9 and the tenth resistance R10, decompression conversion
The 5th end COMP of chip U2 is connect with the first end of the first end of the 13rd capacitor C13 and the 14th capacitor C14, and the 13rd
The second end of capacitor C13 is connect with the first end of eleventh resistor R11, is depressured the 6th end FREQ and the 12nd of conversion chip U2
The first end of resistance R12 connects, and is depressured one end and the 16th of the first end Vin and the 15th capacitor C15 of conversion chip U2
One end of capacitor C16 connects, the other end of the 15th capacitor C15, the other end of the 16th capacitor C16, twelfth resistor R12
Second end, the 7th end GND for being depressured conversion chip U2, the second end of the 14th capacitor C14, the second end of eleventh resistor R11
And the 9th the second end of resistance R9 be grounded, the second end of the second end of the first inductance L3 and the tenth resistance R10 are with
The anode connection of 17 capacitor C17, the cathode ground connection of the 17th capacitor C17, the 18th capacitor C18 are connected in parallel on the 17th capacitor
The second end at the both ends C17, the first inductance L3 is output end, can be powered to the first component.
Direct-current input power supplying is converted to exchange by wireless power exciting circuit by the wireless power supply in the present embodiment
Signal, and wireless energy transfer is carried out by two mutual coupling coils, wireless power receives what circuit obtained the coupling of the second coil
AC signal is converted to the available DC power supply of the first component, wherein two coupling coils are set in the outer of the motor of equipment
Portion, for the electronic equipment with fixed part and rotating part, this kind of loop construction can effectively reduce its equipment
Thickness, and the wireless power supply effectively improves the efficiency of wireless transmission while meeting equipment output power, reduces nothing
Energy loss when line transmits.
Second embodiment
A kind of electronic equipment is present embodiments provided, as described in the first embodiment, which includes motor, first
Wireless power supply in component and first embodiment, motor directly or indirectly transmit driving force to the first component, make first
Component can relatively rotate or rotate relative to the motor of fixed position, can be by this in the first component course of work
Wireless power supply is powered for the first component.
The wireless power supply can be used for holder power supply, mechanical arm power supply or monitoring camera power supply etc..Such as hand
Hold from steady holder, two coils in the wireless power supply be mounted at its horizontal stage electric machine, motor driven holder terminal with
And the equipment of holder terminal clamping is rotated along any direction, which can realize from portion of the handle to holder terminal
Power transmission, and can power for chucking device；And since existing machinery arm is using cable power supply, scope of activities is by certain office
Limit uses the wireless power supply at the cradle head of the mechanical arm, substitutes original cable power supply, can make the work of mechanical arm
Dynamic range increases；In addition, the wireless power supply can also be used in monitoring camera, two coils of the wireless power supply are pacified
Mounted in its motor periphery, it will originally be exposed to outer cable and hide the feelings for avoiding cable to be trimmed to power-off inside the housing
Condition.
Certainly, which includes but is not limited to above-mentioned tripod head equipment, robotic arm apparatus or monitoring camera, sheet
Embodiment also provides a kind of POV rotating display device, and the power supply that above-mentioned wireless power supply carries out rotatable parts can also be used.
POV (persistence of vision) refers to the persistence of vision, and object is in quick movement, when human eye is seen
Image disappear after, human eye remains to continue to retain its image 0.1-0.4 seconds or so images, and this phenomenon is referred to as the persistence of vision
Phenomenon；Refer to the refreshing by certain frequency based on the display of POV to realize that the variation of image then exists once frequency is sufficiently large
Visual persistence phenomenon is generated in human eye vision, human eye can not see the movement of refreshing, but in the residual of previous frame picture
Vision imaging sees the picture of a new frame in the case where not disappearing also, to produce visual illusion, form successional
Picture.Using this characteristic of human eye, LED is made into densely covered strip, lamp bar is formed, makes it fast while high speed rotation
Speed transformation display content, so that it may form a circular display picture, therefore POV rotating display device is also referred to as holographic aobvious
Show device.
The POV rotating display device includes the wireless power supply in motor, the driven first component and first embodiment,
Wherein the first component is lamp bar and controls the luminous control panel of lamp bar, and motor is separately connected control panel and lamp bar, for driving
Dynamic control panel and lamp bar rotate, and the first coil, the second coil in wireless power supply are set in the periphery of motor, wireless to supply
The output that wireless power receives circuit in electric installation is connect with control panel and lamp bar respectively, can be supplied for control panel and lamp bar
Electricity.
In POV rotating display device work, motor control lamp bar and control panel rotation, the rotation of lamp bar will form one
A Plane of rotation, that is, the display screen of display are built-in with storage unit in rotating display device, view are prestored in storage unit
Frequency or image file are provided with microprocessor and reading data device in control panel, and it is single that reading data device reads storage
File in member, and this document being parsed by microprocessor, control in the lamp bar of rotation the luminous position of each LED lamp bead and
Luminescent color, when lamp bar high speed rotation, due to human eye vision persistence effect, spectators can be appreciated that complete video or image, from
And it is formed by display plane in lamp bar rotation and plays out video or image file；In addition to this, which may be used also
With built-in network module, the personal terminal of user, such as computer, mobile phone, tablet computer or iPad can connect with the rotating display device
It connects, and through third-party application transmitting video files or image file into the memory of rotating display device, in the same manner, microprocessor
File is parsed, thus by file video or image show lamp bar rotation be formed by display plane.
In the above scheme, since first coil and the second coil form concentric barrel-like structure, and it is arranged at motor
Periphery, therefore when wireless power supply is installed, does not need the exceptional space at the top of motor between control panel, can reduce whole
Body device thickness, and plant width can't be dramatically increased.Further, motor is arranged in first coil and the second coil
All spaces of motor top surface have been liberated in periphery, therefore the motor of the rotating display device can select brushless disk motor, utilize
The screw hole of brushless disk motor top surface can more smoothly fix the circuit board of rotating part.
It is understood that two coils are sequentially sleeved at motor periphery in the present embodiment, on the one hand, can be improved coil
Between the degree of coupling, enhance the effect of wireless transmission, on the other hand, significantly reduce the thickness of equipment；And if only for reducing
The set-up mode of the integral thickness of rotating display device, another coil is that two coils are still set to the periphery of motor, but nothing
One of them need to be set in another outside, can along motor axial direction it is successively setting up and down, can also effectively reduce and set
Standby thickness.
In the present embodiment, the wireless power supply that above-mentioned POV rotating display device uses meets the wireless power function of equipment
Rate requirement, and its first coil, the second coil and motor are subjected to ingenious setting, the volume of rotating display device can be reduced, made
Whole set equipment miniaturization.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of wireless power supply, which is characterized in that including power supply circuit, first coil and the second coil, the power supply
Circuit includes wireless power exciting circuit and wireless power receives circuit, the wireless power exciting circuit and direct current input electricity
Source and first coil connection, second coil couple with the first coil, the wireless power reception circuit and
The second coil connection is simultaneously powered to the first component of electronic equipment, and the motor of the electronic equipment is passed to the first component
Defeated driving force, the first coil and second coil are set in the periphery of the motor, and the first coil and institute
State the outside that one of them in the second coil is set in another.
2. the apparatus according to claim 1, which is characterized in that be located at outside in the first coil and second coil
Coil on the outside of and the outer surface of motor be provided with patch made of absorbing material.
3. the apparatus according to claim 1, which is characterized in that the wireless power exciting circuit includes half-bridge driver collection
At chip, first resistor, second resistance, 3rd resistor, the 4th resistance, first diode, first capacitor, the second capacitor, third
Capacitor, the 4th capacitor, the 5th capacitor, the 6th capacitor, the first field-effect tube and the second field-effect tube, the half-bridge driver collection
One end of the first resistor is connected at the first end of chip, the other end of the first resistor connects the direct current input electricity
The second end in source, the half-bridge driver integrated chip connects one end of the second resistance, the other end of the second resistance
It connects one end of the first capacitor and the third end of the half-bridge driver integrated chip, the half-bridge driver integrates core
The first end of piece connects one end of second capacitor, the other end of the first capacitor, second capacitor the other end with
And the 4th end of the half-bridge driver integrated chip is grounded, the 5th end of the half-bridge driver integrated chip and described the
One end of three resistance connects, and the other end of the 3rd resistor is connect with the grid of first field-effect tube, and the half-bridge drives
6th end of dynamic device integrated chip is connect with the first end of the third capacitor, the 7th end of the half-bridge driver integrated chip
It is connect with one end of the 4th resistance, the other end of the 4th resistance is connect with the grid of second field-effect tube, institute
The 8th end for stating half-bridge driver integrated chip is connect with one end of the 4th capacitor, the other end of the 4th capacitor and institute
The first end connection of third capacitor is stated, the first end of the half-bridge driver integrated chip and the anode of the first diode connect
It connects, the cathode of the first diode is connect with the 8th end of the half-bridge driver integrated chip, second field-effect tube
The drain electrode of source electrode and first field-effect tube be connected and connect with the first end of the third capacitor, second field-effect
The drain electrode of pipe connect with the direct-current input power supplying and connect with one end of the 5th capacitor, the other end of the 5th capacitor with
The first end of the third capacitor connects, and the first end of the third capacitor is connect with one end of the 6th capacitor, and described the
The other end of six capacitors is connect with one end of the first coil, and the of the other end of the first coil, the third capacitor
The source grounding of two ends and first field-effect tube.
4. the apparatus according to claim 1, which is characterized in that the wireless power supply further includes single-chip microcontroller, the list
Piece machine is used for the wireless power exciting circuit output pwm signal, and the wireless power exciting circuit includes the 5th resistance, the
Six resistance, the 7th resistance, the 8th resistance, the 7th capacitor, the 8th capacitor, the 9th capacitor, the first triode, the second triode,
Three triodes, the second diode and third field-effect tube, one end of the 5th resistance and the output end of single-chip microcontroller connect, institute
The other end for stating the 5th resistance is connect with the base stage of first triode, and the 7th capacitor is connected in parallel on the 5th resistance two
End, one end of the 6th resistance connect with the base stage of first triode, the other end of the 6th resistance and described
The emitter of first triode is grounded, the collector of first triode and the 7th resistance, second triode
Base stage and the third transistor base stage connection, the current collection of the other end of the 7th resistance, second triode
Pole is connect with direct-current input power supplying, and the emitter of the third transistor is connect with the emitter of second triode, described
The grounded collector of third transistor, the emitter of the third transistor are connect with one end of the 8th capacitor, and described
The other end of eight capacitors and one end of the 8th resistance, the cathode of second diode and the third field-effect tube
Grid connection, the source electrode of the other end of the 8th resistance, the positive and described third field-effect tube of second diode
Be grounded, the drain electrode of the third field-effect tube is connect with one end of the first coil, the other end of the first coil with
The direct-current input power supplying connection, the 9th capacitor are connected in parallel on the both ends of the first coil.
5. device according to claim 1-4, which is characterized in that it includes rectification that the wireless power, which receives circuit,
Circuit, Transient Suppression Diode and decompression converting circuit, the input terminal of the rectification circuit are connect with second coil, are used
In the alternating current in second coil is converted to direct current, the first output end of the rectification circuit and the transient state inhibit
The connection of the input terminal of one end of diode and the decompression converting circuit, the other end ground connection of the Transient Suppression Diode,
The second output terminal of the rectification circuit is grounded, and the output end of the decompression converting circuit is connect with the first component, described
Decompression converting circuit is for low pressure needed for the high-voltage DC power supply that the rectification circuit exports is converted to the first component
DC power supply.
6. device according to claim 5, which is characterized in that the rectification circuit includes third diode, the four or two pole
Pipe, the 5th diode, the 6th diode, the tenth capacitor and the 11st capacitor, the cathode of the third diode and described
The anode of 4th diode is connect with the first end of second coil, anode and the five or two pole of the third diode
The anode connection of pipe, the cathode of the 4th diode are connect with the cathode of the 6th diode, the 5th diode
The anode of cathode and the 6th diode is connect with the second end of second coil, and the tenth capacitor is connected in parallel on described
5th diode both ends, the 11st capacitor are connected in parallel on the 6th diode both ends, and the cathode of the 4th diode is
First output end of the rectification circuit, the second output terminal of the just extremely described rectification circuit of the 5th diode.
7. device according to claim 5, which is characterized in that the decompression converting circuit includes decompression conversion chip, the
12 capacitors, the 13rd capacitor, the 14th capacitor, the 15th capacitor, the 16th capacitor, the 17th capacitor, the 18th capacitor,
The first end of nine resistance, the tenth resistance, eleventh resistor, twelfth resistor and the first inductance, the decompression conversion chip connects
The first output end of the rectification circuit is connect, the second end of the decompression conversion chip connects one end of the 12nd capacitor, described
The other end of 12nd capacitor connects the third end of the decompression conversion chip, the third end and first of the decompression conversion chip
The first end of inductance connects, and the first of the first end and the tenth resistance of the 4th end for being depressured conversion chip and the 9th resistance
End connection, the 5th end and the first end of the 13rd capacitor and the first end of the 14th capacitor of the decompression conversion chip connect
Connect, the first end of the second end of the 13rd capacitor and eleventh resistor connects, the 6th end of the decompression conversion chip with
The first end of twelfth resistor connects, first end and one end of the 15th capacitor and the 16th electricity of the decompression conversion chip
One end of appearance connects, the other end of the 15th capacitor, the other end of the 16th capacitor, the twelfth resistor the
Two ends, decompression the 7th end of conversion chip, the second end of the 14th capacitor, the second end of the eleventh resistor with
And the second end of the 9th resistance is grounded, the second end of the second end of first inductance and the tenth resistance with
The anode connection of 17th capacitor, the cathode ground connection of the 17th capacitor, the 18th capacitor are connected in parallel on the 17th capacitor
The second end at both ends, first inductance is powered to the first component.
8. a kind of electronic equipment, which is characterized in that including motor, the first component and as claim 1-7 is described in any item
Wireless power supply, the motor transmit driving force to the first component, and the wireless power supply is used for the first component
Power supply.
9. equipment according to claim 8, which is characterized in that the first component is lamp bar and the control lamp bar hair
The control panel of light, the motor are separately connected the lamp bar and the control panel, for driving the lamp bar and the control
Making sheet rotates, and wireless power receives circuit and connect respectively with the lamp bar and the control panel in the wireless power supply,
For powering to the lamp bar and control panel.
10. equipment according to claim 9, which is characterized in that the motor is brushless disk motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910130771.5A CN109660008A (en) | 2019-02-21 | 2019-02-21 | A kind of wireless power supply and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910130771.5A CN109660008A (en) | 2019-02-21 | 2019-02-21 | A kind of wireless power supply and electronic equipment |
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| CN109660008A true CN109660008A (en) | 2019-04-19 |
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| CN201910130771.5A Pending CN109660008A (en) | 2019-02-21 | 2019-02-21 | A kind of wireless power supply and electronic equipment |
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