Wireless electric energy transmission device under cylindrical quadripolar plate constitution water based on field couplingTechnical field
The invention belongs to wireless power transmission technical fields, are related to a kind of cylindrical quadripolar plate structure based on field couplingUnderwater wireless power transfer.
Background technique
Nowadays, underwater detection equipment using more and more extensive, power from original cable connection, development is provides for oneself graduallyPower supply power supply.But both modes require detecting devices in use for some time, return to the water surface and recharge, this processThe plenty of time can be undoubtedly wasted, and excessively frequently plug electrical connector also can cause to be lost to connector.
If powering under water directly to detecting devices using wireless power transmission technology, can be shortened the charging time, improveWorking efficiency avoids the insecurity factors such as electric leakage.For traditional magnetic field coupling mode, in an underwater environment, due to aqueous mediumIt is impure, there is certain conductivity, eddy-current loss can be caused；In addition magnetic field cannot pass through metal obstacle, and to equipment meetingElectromagnetic interference is generated, efficiency of transmission is caused to be greatly reduced.In contrast, then more using the wireless power transmission mode of field couplingTool advantage:
1) due to using field coupling principle, under water, especially advantage is significant in seawater, does not generate vortex, energy damageIt consumes smaller.
2) coupled electric field is limited between capacitor plate substantially, and electromagnetic radiation greatly reduces, and reduces the electricity to systemMagnetic disturbance.
3) transmitting energy by electric field will not be obstructed by barrier metallization.
4) field coupling system bulk is small, light-weight, and system heat generation is small.
Summary of the invention
To solve the above problems, the present invention provides radio under a kind of cylindrical quadripolar plate constitution water based on field couplingEnergy transmitting device, is allowed to work in water, powers for underwater equipment.
Technical solution of the present invention:
Wireless electric energy transmission device under a kind of cylindrical quadripolar plate constitution water based on field coupling, including emitting portion andReceiving portion；
The emitting portion is mounted in charging base station 1, including power supply, high-frequency inversion module, resonance compensation mouldBlock and electric energy transmitting terminal 4；Cylindrical charge tunnel 2 is equipped in the described charging base station 1 in the horizontal direction, in charge tunnel 2Lower part be equipped with platform 3, for placing underwater detectoscope 10；The electric energy transmitting terminal 4 totally two, it is logical to be symmetrically mounted on chargingOn the inner wall in road 2, electric energy transmitting terminal 4 is hollow cylindrical structure；Power supply, high-frequency inversion module and the resonance is mendedIt repays after module is sequentially connected, then be connected with electric energy transmitting terminal 4, electric energy is provided；
The receiving portion is mounted in underwater detectoscope 10, including electric energy receiving end 5, rectification module and undersea detectionDevice battery；The electric energy receiving end 5 is hollow cylindrical structure, totally two, is symmetrically sleeved on 10 appearance of underwater detectoscopeFace；After electric energy receiving end 5 is connected with rectification module, then it is connected with underwater detectoscope battery；The emitting portion and receiving unitAfter dividing docking, emitting portion ultimately forms the circuit of closure with receiving portion, charges for underwater detectoscope battery；
The cylindrical wall of the electric energy transmitting terminal 4 and electric energy receiving end 5 is divided into four layers, is followed successively by capacitor plate from outside to inside6, insulating protective layer 7, sealing waterproof layer 8 and buffering protective layer 9 mitigate object collision to device to adapt to underwater operation conditionCaused by be lost；The capacitor plate 6 of electric energy transmitting terminal 4 is used as emission electrode, and the capacitor plate 6 of electric energy receiving end 5 is as receptionElectrode, the interior diameter of electric energy transmitting terminal 4 are greater than the interior diameter of electric energy receiving end 5, electric energy receiving end 5 in electric energy transmitting terminal 4 fromBy rotating；
When underwater detectoscope 10 does not need charging, underwater detectoscope 10 is separated with charging base station 1；When underwater detectoscope 10When needing to charge, underwater detectoscope 10 enters in the charge tunnel 2 for being located at charging base station 1, is placed on platform 3, makes undersea detectionThe electric energy receiving end 5 of 10 outer surface of device and the electric energy transmitting terminal 4 in charging base station 1 are coaxial；Two groups of electric energy transmitting terminals 4 connect with electric energyReceiving end 5 forms cylindrical quadripolar plate field coupling mechanism；Power supply in charging base station 1 is high-frequency inversion module for power supply, highThe alternating current of frequency inverter module output is transported to electric energy transmitting terminal 4 after resonance compensation module；The electric energy of electric energy transmitting terminal 4 is logicalThe mode for crossing field coupling passes to electric energy receiving end 5；It is rectified into after the 5 rectified module of received alternating current of electric energy receiving end straightGalvanic electricity charges for underwater detectoscope battery, realizes radio energy under the cylindrical quadripolar plate constitution water based on field coupling and passesIt is defeated.
The high-frequency inversion module mainly occurs circuit, optical coupling isolation circuit, driving circuit by PWM and is based on MOSFETFull bridge inverter constitute；The resonance compensation module is LC compensation circuit.
The material of the capacitor plate 6 is copper or aluminium.
The material of the insulating protective layer 7 is electrical insulating material, such as ceramics.
The material of the buffer protection layer 9 is rubber.
Working principle: may be influenced when underwater detectoscope 10 charges under water by water flow and relative rotation fortune occursDynamic, more advantageous using apparatus of the present invention at this time, apparatus of the present invention can carry out for the underwater detectoscope 10 under various statesWireless power transmission.In the apparatus, two biggish exterior circular columns in charging base station 1 are as electric energy transmitting terminal 4, positionElectric energy receiving end 5 inside underwater detectoscope 10 is lesser inner cylinder, and electric energy receiving end 5 can rotate freely.It is each pair ofCoupling electrode is made of the capacitor plate 6 of electric energy transmitting terminal 4 and the capacitor plate 6 of outer electric energy receiving end 5, electric energy transmitting terminal 4Capacitor plate 6 is that field coupling mechanism is equivalent to electricity when the capacitor plate 6 of electric energy receiving end 5 is receiving electrode by emission electrodeHold, equivalent capacity may be expressed as:Wherein ε0、εr、h、ln、rout、rinRespectively indicate permittivity of vacuum, phaseTo the height of dielectric constant, cylindrical body, natural logrithm, the radius of exterior circular column and inner cylinder radius.Meanwhile it can be usedLesser inner cylinder increases total coupling area, to adapt to underwater operation environment.
The present invention is suitable for carrying out wireless power transmission for the detector of long-time underwater operation.
Beneficial effects of the present invention:
(1) building block is mature industrial products, is easy to implement.
(2) wireless power transmission technology is used, avoids excessively frequently plugging electrical connector and connector is caused to be lost.
(3) it powers under water for equipment, avoids detector from returning to the water surface and recharge and waste time.
(4) transmitting energy by electric field will not be obstructed by barrier metallization.
(5) use field coupling principle, under water, especially advantage is significant in seawater, do not generate vortex, energy loss compared withIt is small.
(6) coupled electric field is limited between capacitor plate substantially, and electromagnetic radiation greatly reduces, and reduces the electricity to systemMagnetic disturbance.
Detailed description of the invention
Fig. 1 (a) is the xz floor map of the receiving end of apparatus of the present invention.
Fig. 1 (b) is the xz floor map of the transmitting terminal of apparatus of the present invention.
Fig. 2 be underwater detectoscope be parked in inside charge tunnel platform when zy plan view.
Fig. 3 is the main composition schematic diagram of wireless electric energy transmission device.
Fig. 4 (a) is field coupling structural scheme of mechanism.
Fig. 4 (b) is the sectional view of electric energy transmitting terminal and electric energy receiving end.
Fig. 5 is high-frequency inversion module diagram.
In figure: 1 charging base station；2 charge tunnels；3 platforms；4 electric energy transmitting terminals；5 electric energy receiving ends；6 capacitor plates；7 absolutelyEdge protective layer；8 sealing waterproof layers；9 buffer protection layers；10 underwater detectoscopes.
Specific embodiment
Below in conjunction with attached drawing and technical solution, a specific embodiment of the invention is further illustrated.
The implementation steps of wireless electric energy transmission device are as follows under a kind of cylindrical quadripolar plate constitution water based on field coupling:
Fig. 1 (a), Fig. 1 (b), shown in Fig. 2 be apparatus of the present invention xz plane, zy plan view.The charging base station installed1 is located at 30 meters of deep-seas domain, maximum transmission power 200W.It charges inside base station 1 there are a charge tunnel 2, when charging, under waterOn the parked platform 3 inside charge tunnel of detector 10, make the electric energy receiving end 5 and charging base station inside underwater detectoscope 10The axis of electric energy transmitting terminal 4 in 1 is located in same level.The two of electric energy receiving end 5 cylindrical capacitor plate 6 and electric energyThe cylindrical capacitor plate 6 of the two of transmitting terminal 4 constitutes cylindrical quadripolar plate field coupling mechanism, passes through this cylindrical quadripolar plate electricityField coupling mechanism realizes wireless power transmission.
It is the main composition schematic diagram of wireless electric energy transmission device shown in Fig. 3.Wherein high-frequency inversion module can provide frequency heightUp to the alternating current of 1MHz, reduce system reactive power through resonance compensation module, passes through cylindrical quadripolar plate field coupling mechanism realityExisting wireless power transmission.
It is field coupling structural scheme of mechanism shown in Fig. 4.Environment under water is influenced by water flow, and underwater detectoscope 10 mayIt can move, collide with charge tunnel 2, buffer protection layer 9 can reduce collision bring loss.Underwater detectoscope 10 simultaneouslyIt may be influenced by water flow and relative rotary motion occurs, the cylindrical quadripolar plate field coupling mechanism used is suitable for electric energyThere are the application of relative rotary motion in transmitting terminal 4 and electric energy receiving end 5, guarantee the stabilization of electric energy transmission in the case.
It is high-frequency inversion module diagram shown in Fig. 5.The circuit can provide stable exchange under the working frequency of 1MHzSignal.Inductance needed for the setting of higher working frequency is arranged can making resonance compensation module is relatively small, saves space, reduces electricityMagnetic disturbance improves the stability of system work.
The present invention invents a kind of novel coupling by the analysis of the coupling mechanism advantage and disadvantage to typical single capacitor, two-plateMechanism is closed, increases a pair of of pole plate, and pole plate shape is selected as cylinder.Compared with classical magnetic field coupling, using field couplingWireless power transmission mode then have more advantage.Under water, advantage is significant especially in seawater, does not generate vortex, energy lossIt is smaller.Coupled electric field is limited between capacitor plate substantially, and electromagnetic radiation greatly reduces, and reduces dry to the electromagnetism of systemIt disturbs, and transmit energy by electric field to be obstructed by barrier metallization.Traditional detecting devices in use for some time, returnsIt is recharged to the water surface, this process can undoubtedly waste the plenty of time, and excessively frequently plug electrical connector also can be to connectionDevice causes to be lost.The present invention powers directly to detecting devices under water, can be shortened the charging time, improves working efficiency, avoids leakingThe insecurity factors such as electricity.