CN108808883A - A kind of novel reception device in wireless charging system - Google Patents
A kind of novel reception device in wireless charging system Download PDFInfo
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Abstract
The invention discloses the novel reception devices in a kind of wireless charging system, including common frequency power network, primary side rectification circuit, high-frequency inverter circuit, transmitting coil circuit, receiving coil circuit, secondary side rectification circuit, buck circuits, load control signal, the AC conversion of power grid is direct current by the primary side rectification circuit, direct current forms the alternating current of high frequency using high-frequency inverter circuit, high-frequency alternating current carries out the transmission of energy by forming the unlimited electric energy transmission circuit of electromagnetic resonance between transmitting coil circuit and receiving coil circuit, the high-frequency alternating current for being transferred to secondary side obtains DC voltage by secondary side rectification circuit, buck is carried out using buck circuits to convert to obtain load control signal.The present invention is not necessarily to overhead line, meets the development trend of modern city rail traffic.
Description
Technical field
The present invention relates to electronics and RF application, the novel reception device in especially a kind of wireless charging system.
Background technology
Modern tram is as a kind of novel public transport, with travel speed is fast, construction cost is low, the period
Many advantages, such as short, energy conservation and environmental protection, meets the demand of Modern City Traffic development, can also effectively improve the effect of people's trip
Rate, and solve the pollution problem that vehicle exhaust is brought.Modern tram has the advantage that as public transport：
First, convenient quickly.Tramcar has apparent advantage compared to present public transit vehicle, not only in speed,
And the comfort of passenger can be improved, it is more efficient and convenient compared to present public transit system.
Second, at low cost.Investment needed for one kilometer of streetcar line is that the one third of one kilometer of subterranean railway arrives
1/20th.For subway, without in mine working tunnel, escapable cost.
Third, energy conservation and environmental protection.For tramcar due to being pushed by electric power, vehicle will not discharge exhaust gas, be a kind of pollution-free
The environmentally friendly vehicles.
Based on above advantage, in public traffic in metropolis system, it is very advantageous to greatly develop tramcar.
However, the power supply mode of modern tram and imperfect, mainly there is following three kinds of power supply modes：
A, overhead line power supply mode.The Technical comparing of current this power supply mode is ripe, but due to the presence of overhead line,
The beauty in entire city is seriously affected, and due to the presence of high-tension bus-bar bare exposed conductor, one is also constituted to the safety of pedestrian
Fixed threat.
B, third-rail feeding mode.The cost of this power supply mode is low, but completely buried equipment is protected from environmental very
Greatly, and safeguard that inconvenience, maintenance cost are accordingly higher.
C, vehicle-mounted energy storage device power supply mode.This power supply mode is simple and reliable, but since energy storage fills the addition of Tatami, meeting
Make that train volume is big, high energy consumption, it is difficult to the operation of long range.
It can be seen that the power supply technique of tramcar is one of its key technology, it is promoted and is of great significance.And nothing
Line electric energy transmission technology can not only charge in no cable connection directly to tramcar, but also without connecing when frequently using
Abrasion is touched, is more suitable for using in a humid environment, and easily vehicle-mounted energy storage can be given to fill in tramcar bus stop
It sets and charges so as to reduce the volume and weight of vehicle-mounted energy storage device, therefore would be possible to as the first of its charging modes
Selection.
Traditional electric energy transmission mode is connected progress electric energy transmission by conductor between power supply and load, but with society
The drawbacks of meeting electrical equipment is more and more also higher and higher with electric frequency, and this tradition power supply mode is brought is more and more obvious, such as
Easy to produce plug-in spark, electric wire abrasion, safeguard inconvenience, expenditure of construction height etc..Just because of the presence of these drawbacks, push
The generation and development of new electric energy transmission mode, that is, wireless power transmission technology.Wireless power transmission technology is not electrical straight
It connects in succession in the case of being in direct contact with physics, realizes that electric energy is transmitted to the stability of load, make between power supply and electrical equipment
Realize complete electrical isolation, have the advantages that safety, flexibly, traditional electric energy transmission mode such as reliable it is incomparable, at present oneself
Through having obtained basic promotion and application in household electrical appliances and industrial circle.
Wireless power transmission technology is combined with tramcar, meets the development trend of modern city rail traffic, is had
There is important realistic meaning, and has its unique advantage compared with other power supply modes：
(1) not exposed conductor exists, and the energy transmission of inductive coupling system is not by substances such as dust, dirt, water
It influences；
(2) energy transmitting and receiving portion are without being in direct contact, it is ensured that electric insulation；
(3) wireless power transmission can be carried out in stopping or travelling, charging modes are versatile and flexible；
(4) it is not necessarily to overhead line, it is small to the negative effect of urban landscape.
Therefore the reception device of research and development modern tram radio energy transmission system has important research valence
Value and meaning.But a kind of novel reception device in there is no wireless charging system in the prior art.
Invention content
Technical problem solved by the invention is to provide the novel reception device in a kind of wireless charging system.
Realize that the technical solution of the object of the invention is：A kind of novel reception device in wireless charging system, including
The common frequency power network that is sequentially connected, primary side rectification circuit, high-frequency inverter circuit, transmitting coil circuit, receiving coil circuit, secondary side are whole
The AC conversion of common frequency power network is direct current, direct current by current circuit, buck circuits and load control device, primary side rectification circuit
Electricity forms the alternating current of high frequency by high-frequency inverter circuit, and the alternating current of high frequency enters transmitting coil circuit, transmitting coil circuit
The transmission that the unlimited electric energy transmission circuit of electromagnetic resonance carries out energy is formed between receiving coil circuit, is transferred to the height on secondary side
Frequency alternating current obtains DC voltage after secondary side rectification circuit, and buck circuits carry out lifting buckling to the DC voltage received
Get load control signal in return.
Compared with prior art, the present invention its remarkable advantage is：1) present invention using SS compensation topologies compared to other three
Maximum feature is exactly its primary compensation capacitor for kind compensation topology is not influenced by mutual inductance M, changed in mutual inductance value
When, this compensation topology also can still make system worked well at resonance point, can keep the high efficiency of transmission of system.2) this hair
Mutual inductance value between bright working frequency and coupling coil can be taking human as change, and both parameters are also influence system
An important factor for working condition and stability.3) when transmission range changes, the mutual inductance value variation of coupling coil should use up the present invention
Amount is big, is more advantageous to the mutual inductance value of system adjustment, system is made to be operated in perfect condition.4) premise of present invention output rated power
Under, coupling coil efficiency of transmission can be promoted, ensures the Effec-tive Function of system.5) present invention can be effective when reducing mutual inductance value
Realize system output rated power.6) present invention can adjust the size of output signal, be preferably worth.Just due to this kind of nothing
Novel reception device in micro USB electric system put have the advantages that it is as above, be applied to magnet coupled resonant type wireless electric energy transmission system
The utilization rate of front end energy can not only be improved in system to solve system due to frequency splitting phenomenon by adjusting frequency
The problem of causing output power drastically to decline.Novel reception device in the wireless charging system that the present invention designs is according to transmission side
Formula is the unlimited electric energy transmission of magnetic resonance, using resonance, meets the requirement of transmission range, the controllable output of buck circuits thereafter
The size of signal.
Description of the drawings
Fig. 1 is the novel reception device composition frame chart in wireless charging system.
Fig. 2 is the novel reception device schematic diagram in wireless charging system.
Fig. 3 is the equivalent circuit of double-metal layer inductance.
Fig. 4 is hexagon inductance.
Fig. 5 is eight side row inductance.
Fig. 6 is rectangular inductance.
Representative meaning is numbered in figure is：1 is common frequency power network, and 2 be primary side rectification circuit, and 3 be high-frequency inverter circuit, 4
It is receiving coil circuit for transmitting coil circuit, 5,6 be secondary side rectification circuit, and 7 be buck circuits, and 8 be load control signal.
Specific implementation mode
The present invention a kind of wireless charging system in novel reception device, including be sequentially connected common frequency power network 1, primary side
Rectification circuit 2, high-frequency inverter circuit 3, transmitting coil circuit 4, receiving coil circuit 5, secondary side rectification circuit 6,7 and of buck circuits
The AC conversion of common frequency power network 1 is direct current by load control device 8, primary side rectification circuit 2, and direct current passes through high-frequency inversion
Circuit 3 forms the alternating current of high frequency, and the alternating current of high frequency enters transmitting coil circuit 4, transmitting coil circuit 4 and receiving coil electricity
The transmission that the unlimited electric energy transmission circuit of electromagnetic resonance carries out energy is formed between road 5, is transferred to the high-frequency alternating current warp on secondary side
DC voltage is obtained after crossing secondary side rectification circuit 6, buck circuits 7 convert the DC voltage progress buck received and born
Carry control signal 8.
First diode D1, the second diode D2, third diode D3, the four or two pole in the primary side rectification circuit 2
Pipe D4 forms full-bridge circuit, and the first capacitance C1 is connected in parallel on full-bridge circuit side, and Mos pipes are connected in parallel on delivery outlet, the first inductance L1 series connection
Between the first capacitance C1 and Mos pipe, capacitance C0 is connected in parallel on output end, and the 5th diode D5 makees between capacitance C0 and Mos pipe
Afterflow.
First triode Q1 and the 6th diode D6, the second triode Q2 and the seven or two in the high-frequency inverter circuit 3
Both pole pipe D7, third transistor Q3 and the 8th diode D8, the 4th triode Q4 and the 9th diode D9 are in parallel, re-form complete
Bridge circuit.
The transmitting coil circuit 4 is in series by the 4th capacitance C4, the second inductance L2, the 5th inductance L5.
The receiving coil circuit 5 is in series by first resistor R1, the second capacitance C2, third inductance L3.
The secondary side rectification circuit 6 by diode forms bridge circuit, and parallel connection C3 is constituted again.
The buck circuits 7 in circuit, connect the by M1 and the 4th inductance L4 series connection between M1 and the 4th inductance L4
The negative terminal of ten diode D10.
The present invention is exactly that its primary side is mended compared to feature maximum for other three kinds of compensation topologies using SS compensation topologies
Repay capacitance is not influenced by mutual inductance M, and when mutual inductance value is changed, this compensation topology also can still make the normal work of system
Make at resonance point, the high efficiency of transmission of system can be kept.
Present invention is further described in detail below in conjunction with the accompanying drawings.
1. the novel reception device in wireless charging system
Novel reception device in wireless charging system is there are many different transmission structures, main difference is that transmission principle
Difference, the present invention is using using magnetic resonance transmission mode, circuit diagram as shown in Figure 2.
Common frequency power network 1, primary side rectification circuit 2 (full-bridge circuit is formed by D1, D2, D3, D4, C1 is connected in parallel on full-bridge circuit side,
Mos is connected in parallel on delivery outlet, and L1 is connected between C1 and Mos, and C0 is connected in parallel on output end, and D5 makees afterflow between C0 and Mos), it is high
Frequency inverter circuit 3 (in parallel by both Q1 and D6, Q2 and D7, Q3 and D8, Q4 and D9, to re-form full-bridge circuit), transmitting coil electricity
Road 4 (in series by C4, L2, L5), receiving coil circuit 5 (in series by R1, C2, L3), secondary side rectification circuit 6 is (by two
Pole pipe forms bridge circuit parallel connection C3 again), buck circuits 7 (in circuit by M1 and L4 series connection, connect D10's between M1 and L4
Negative terminal is constituted), load control signal 8.
Main components：Rectification circuit diode capacitance inductance and metal-oxide-semiconductor, high-frequency inverter circuit IGBT and diode, hair
Ray circle circuit inductance capacitance, receiving coil circuitous resistance inductance capacitance, buck circuit metal-oxide-semiconductor inductance and diode.
Novel reception device in wireless charging system must satisfy one and divide into realize the output of maximal efficiency
Meter：
2. rectification circuit and high-frequency inverter circuit design
There are two main classes for power inverter in electric vehicle dynamic mode radio energy transmission system, and a part is to be used for
In addition the high frequency rectifying device of AC-DC is the high-frequency ac power for driving armature winding.System can high efficiency of transmission depend on
Whether system works under resonance condition, to keep power supply and the frequency transmitted between winding consistent, especially be answered high-power
It uses, enough output powers to be not only provided, also there is corresponding output frequency, thus high frequency electric source is that whole device is set
One ring of key of meter.It can realize that the major way of large power supply has oscillatory type, inverter circuit under megahertz rank at present
And power amplifier.Meanwhile some insignificant parasitic parameters at a lower frequency, the performance of circuit will be generated in high frequency
Vortex, leakage inductance, the AC impedance of conducting wire and the distribution capacity of great influence, especially electromagnetic device, in high and low frequency following table
Now all it is very different.Since the transimission power that electric vehicle dynamic mode power supply system requires is larger, while by power electronics
The limitation of device, for system operating frequency generally in tens kHz to thousands of kHz etc., frequency is higher, and powerful output is just more difficult to
It realizes, therefore is more suitable for using inverter circuit, analysis from now on is all based on inversion expansion.In order to simultaneously meet output power and
Frequency is controllable, and design at present uses full bridge inversion circuit.
3. transmitting coil and receiving coil circuit design
Common frequency power network by industrial frequency rectifying and Support Capacitor filtering after become DC power supply, after by high-frequency inversion drive coupling
Coil resonance is closed, converts electric energy to the electric field energy and magnetic field energy in primary side coupling coil, electric field energy is stored in resonant capacitance
In, magnetic field energy is stored in coupling coil, and electric field energy and magnetic field energy are equal at this time, and can be with system operating frequency week
The conversion of phase property.
The magnetic field energy that primary side coupling coil generates is acted on by the mutual inductance between coupling coil, is converted into secondary side coupling
Electric field energy in coil, and due to secondary side coupling coil under identical frequency resonance, then electric field energy coupling coil with it is humorous
It shakes and is exchanged with each other between capacitance.
Electric field energy supplies load consumption by circuit, since former secondary side coupling coil resonant frequency is identical, can incite somebody to action
Energy is continuously from power delivery to load.
Planar spiral inductor
The geometry of planar spiral inductor, plane thread inductance are most widely used RF-excited CO_2 lasers.Fig. 4,
5,6 be hexagon, octagon, square planar spiral inductance.Side of the conductor length of circular planar spiral inductance than same outer diameter D
Shape spiral inductance is short, and quality factor are high by 10% or so.Planar spiral inductor is by low resistance metal conducting wire (aluminium, copper, gold or silver), thickness
For toxSilicon dioxide layer and silicon substrate constitute.Metal layer in embedded silicon dioxide layer as wire spiral, top
Metal layer is usually most thick, and the larger reduction of the spacing to which electric conductivity is best, and between the metal layer and silicon substrate of top is parasitic
Capacitance C=∈ Am/tox, increase self-resonant frequencyWherein AmIt is the area of plain conductor.Substrate can be by
It is prepared by the thick silicon, GaAs or SiGe that thickness reaches 500~700 μm.The thin silicon dioxide layer that thickness is 0.4~3 μm is used for being isolated
Plain conductor and silicon substrate.The outer end of helix is directly connected with port.The inner terminal of spiral will by lower metal layer or " fly
Line " is attached.Entire helical structure is connected by pad and is surround by substrate.
Rectangular, rectangle, hexagon, octagon and annular are common spiral inductance structures.Usual hexagon and octagon
Inductance value and series resistance ratio rectangular spiral inductance of the spiral inductance per circle are small.The chip face that hexagon and eight-sided formation occupy
Product is larger, therefore both structures are seldom applied.
Snail integrated inductor could be prepared under conditions of two or more layers smithcraft by only having, the reason is that plane
The interior connection of spiral inductance needs one layer with the metal layer of spiral conducting line layer to connect.Rectangular shapes of inductors and IC layout tools are most
It is compatible.The physical layout tool (such as MAGIC) for being readily available Manhattan (Manhattan) framework is designed.Hexagon, eight
The quality factor q of side shape and high-order polygonal spiral inductanceloIt is bigger than rectangular inductance.
The important parameter of integrated inductor has inductance value Ls, quality factor qLoWith self-resonant frequency fr.Typical inductance value is 1
~20nH, quality factor are 5~20, and self-resonant frequency is 2~20GHz.Low quality factor q is main existing for planar spiral inductor
Want problem.The geometric parameter of inductance has between turn number N, plain conductor width w, plain conductor height h, coil turn and circle
The thickness t of distance s, internal diameter d, outer diameter D, silicon substrateSi, oxidated layer thickness t between plain conductor and bottom electrodeuox.Top
Metal layer is commonly used to manufacture integrated inductor, because it is most thick metal layer, resistance is minimum, and between top and substrate
Spacing is maximum, to reduce parasitic capacitance.
Low-resistance inert metal is the preferred metallic conductor of integrated inductor, other low resistive metals such as copper (such as gold)
It is larger with resistance difference of the silver in sulphur and wet environment.Price as noble metal platinum is twice of gold and resistivity is big.Gold
2 δ should be more than by belonging to conductor thickness h, and one of skin depth δ is in wire top, another skin depth δ is in conducting wire bottom.
The direction of magnetic flux is vertically and substrate.Magnetic field penetration substrate and vortex of inducting wherein, so the substrate of high conductivity often drops
The quality factor q of low inductanceLo.Optimization helical geometry and plain conductor width can reduce the Ohmic resistance and substrate of conducting wire
Parasitic capacitance.In order to reduce the power attenuation in substrate, substrate can use high-resistance silica [such as silicon-on-insulator
(SOI)], thick dielectric layer, or thickness, the making of multi-layer conductive line.
Square planar inductance
The total inductance value of spiral inductance is equal to the sum of mutual inductance between each straightway conductor self-induction and each straightway conductor.If two
Current direction in Line Segment conductor is identical, and mutual inductance is positive., whereas if the electric current side in two Line Segment conductors
To on the contrary, mutual inductance is then negative.The mutual inductance for being mutually perpendicular to conductor is zero.In square spiral inductance in adjacent, parallel straightway conductor
Current direction it is identical, therefore inductance value is larger.
Has the inductance value that several expression formulas can be used for estimating radio frequency spiral planar inductor.In general, planar spiral inductor
Inductance value increase with the increase of turn number N and inductance area A, with the reduction of distance between plain conductor and ground plane
Reduce.
Area is that the inductance value of A arbitrary shapes (such as rectangular, rectangle, hexagon, eight side rows or annular) single loop conducting wire is
Therefore, the single turn circular loop inductance inductance value that radius is r is
L≈πμ0R=4 π2×10-7R=4 × 10-6r(H) (2)
For example, r=1mm, L=4nH.
The inductance value for the N circle arbitrary plane spiral inductances often applied in integrated circuits is
L≈πμ0rN2=4 π2×10-7rN2=4 × 10-6rN2(H) (3)
Wherein, N is coil turn, and r is the radius of spin.
Bryan formula
The inductance value for the square planar spiral inductance that Bryan empirical equations provide is
Wherein, outermost layer is a diameter of
D=d+2Nw+2 (N-1) s (5)
In formula, N is coil turn, and D and d are the outermost layer and innermost layer diameter of inductance respectively, and unit is m.
Wheeler formula
The inductance value for the square planar spiral inductance that Wheeler correction formulas provide is
Wherein,
D=d+2Nw+2 (N-1) s (7)
All dimensional units are m.It is with N, w and the s inductance value indicated
Greenhouse formula
The inductance value for the square planar spiral inductance that Greenhouse formula provide is
All dimensional units are m.
Grover formula
Rectangular or matrix plane spiral inductance that wire sectional area is rectangle inductance expression formula is
Wherein conductor length is
L=2 (D+w)+2N (2N-1) (w+s) (11)
Outer diameter is
D=d+2Nw+2 (N-1) s (12)
H is the height of plain conductor.The unit of l, w, s, h are m.The expression formula of this equation and straight line conductor inductance is one
Sample.
Grover formula only considered self-induction and have ignored the mutual inductance between conducting wire.
Rosa formula
The inductance value expression of square planar spiral inductance is
All dimensional units are m.
Granin formula
The inductance value empirical representation of planar spiral inductor is (inductance value error in 5~50nH<10%)
Wherein, AmIt is plain conductor area, AtotIt is total inductance area, w is conductor width, and s is wire spacing.It is all
Dimensional units are m.
Monomial formula
The inductance Value Data of square planar spiral inductance is fitted monomial empirical representation
All dimensional units are μm.
Jenei formula
Total inductance value includes self-induction Lself, positive mutual inductance M+。
The design of 4.buck circuits：
When being controlled using fixed duty cycle, the utilization rate of two-way Buck/Boost converters outlet side decoupling capacitance is：
When obviously, using the power decoupled scheme for determining Duty ratio control, there is no increase for capacitance utilization rate.It reduces energy storage
Capacitor's capacity is by increasing decoupling capacitance crest voltage perunit valueCome what is realized.In order to improve the utilization of decoupling capacitance
Rate needs the limitation for breaking away from DC bus-bar voltage ripple factor, fundamentally increases decoupling capacitance voltage fluctuation.
Since two-way Buck/Boost power decoupling circuits are usually operated at undercompensation state, pfc converter outlet side
Filter capacitor CoA small amount of ripple power is handled, most ripple power are transferred to decoupling capacitance by power decoupling circuit
On.Thus the voltage fluctuation needed for practical decoupling capacitance is consistent with the fluctuation of pfc circuit output voltage.Increase decoupling capacitance
Voltage fluctuation can fluctuate consistent modulating wave to realize by introducing with pfc converter output voltage.Its circuit structure such as Fig. 4
It is shown.
The conduction ratio for defining switch S1 is d, S1, S2 complementation conducting.It is two-way when pfc converter output voltage increases
The duty ratio of Buck/Boost power decoupling circuits also increases, and the decoupling capacitance voltage of outlet side rises, and is shifted by pfc circuit
Power on to decoupling capacitance Cs increases that (or the conduction ratio of S2 reduces, and is transferred to the power on pfc circuit by decoupling capacitance Cs and subtracts
It is small) so that pfc converter output voltage reduces.It is similar therewith when pfc converter output voltage reduces.As it can be seen that by being based on
The feedforward control of PFC output voltages fluctuation can make in two-way Buck/Boost circuit compensations pfc converter because storage capacitor holds
Output voltage ripple caused by value reduction realizes no electrolytic capacitor to realize power decoupled.
The present invention is exactly that its primary side is mended compared to feature maximum for other three kinds of compensation topologies using SS compensation topologies
Repay capacitance is not influenced by mutual inductance M, and when mutual inductance value is changed, this compensation topology also can still make the normal work of system
Make at resonance point, the high efficiency of transmission of system can be kept.
Claims (7)
1. the novel reception device in a kind of wireless charging system, which is characterized in that including be sequentially connected common frequency power network (1),
Primary side rectification circuit (2), high-frequency inverter circuit (3), transmitting coil circuit (4), receiving coil circuit (5), secondary side rectification circuit
(6), the AC conversion of common frequency power network (1) is straight by buck circuits (7) and load control device (8), primary side rectification circuit (2)
Galvanic electricity, direct current form the alternating current of high frequency by high-frequency inverter circuit (3), and the alternating current of high frequency enters transmitting coil circuit
(4), the unlimited electric energy transmission circuit of electromagnetic resonance is formed between transmitting coil circuit (4) and receiving coil circuit (5) carries out energy
The transmission of amount, the high-frequency alternating current for being transferred to secondary side obtain DC voltage, buck circuits (7) after secondary side rectification circuit (6)
Buck is carried out to the DC voltage received to convert to obtain load control signal (8).
2. the novel reception device in wireless charging system according to claim 1, it is characterised in that：The primary side is whole
The first diode (D1), the second diode (D2), third diode (D3), the 4th diode (D4) are formed complete in current circuit (2)
Bridge circuit, the first capacitance (C1) are connected in parallel on full-bridge circuit side, and Mos pipes are connected in parallel on delivery outlet, and the first inductance (L1) is connected on first
Between capacitance (C1) and Mos pipes, capacitance (C0) is connected in parallel on output end, and the 5th diode (D5) is between capacitance (C0) and Mos pipes
Make afterflow.
3. the novel reception device in wireless charging system according to claim 1, it is characterised in that：The high frequency is inverse
Become the first triode (Q1) and the 6th diode (D6), the second triode (Q2) and the 7th diode (D7), third in circuit (3)
Both triode (Q3) and the 8th diode (D8), the 4th triode (Q4) and the 9th diode (D9) are in parallel, re-form full-bridge
Circuit.
4. the novel reception device in wireless charging system according to claim 1, which is characterized in that the emission lines
It is in series by the 4th capacitance (C4), the second inductance (L2), the 5th inductance (L5) to enclose circuit (4).
5. the novel reception device in wireless charging system according to claim 1, it is characterised in that：The reception line
It is in series by first resistor (R1), the second capacitance (C2), third inductance (L3) to enclose circuit (5).
6. the novel reception device in wireless charging system according to claim 1, it is characterised in that：The secondary side is whole
Current circuit (6) by diode forms bridge circuit, and in parallel (C3) is constituted again.
7. the novel reception device in wireless charging system according to claim 1, it is characterised in that：The buck electricity
Road (7) is connected in circuit by M1 and the 4th inductance (L4), connects the tenth diode (D10) between M1 and the 4th inductance (L4)
Negative terminal.
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| CN201710298097.2A CN108808883A (en) | 2017-04-30 | 2017-04-30 | A kind of novel reception device in wireless charging system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110912279A (en) * | 2019-11-19 | 2020-03-24 | 南京沃瑞新能源科技有限公司 | Wireless power supply device for electric automobile and power supply method thereof |
| CN111064359A (en) * | 2019-12-23 | 2020-04-24 | 南京航空航天大学 | Wide-range bidirectional conversion circuit and control method |
| CN111600499A (en) * | 2020-05-28 | 2020-08-28 | 深圳市瑞能实业股份有限公司 | AC/DC bidirectional conversion device and control method thereof |
| CN111987809A (en) * | 2020-07-28 | 2020-11-24 | 东北林业大学 | Secondary control type LCC-S wireless charging system based on magnetic integration technology and orthogonal decoupling method |
| CN112290696A (en) * | 2020-10-27 | 2021-01-29 | 济南大学 | Wireless power transmission system and method capable of inhibiting frequency splitting phenomenon |
| CN114243951A (en) * | 2022-02-22 | 2022-03-25 | 中国人民解放军海军工程大学 | Magnetic coupling type wireless power transmission system without parameter identification |
| CN114724801A (en) * | 2022-04-06 | 2022-07-08 | 东南大学 | Telescopic planar spiral inductor structure |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110912279A (en) * | 2019-11-19 | 2020-03-24 | 南京沃瑞新能源科技有限公司 | Wireless power supply device for electric automobile and power supply method thereof |
| CN111064359A (en) * | 2019-12-23 | 2020-04-24 | 南京航空航天大学 | Wide-range bidirectional conversion circuit and control method |
| CN111600499A (en) * | 2020-05-28 | 2020-08-28 | 深圳市瑞能实业股份有限公司 | AC/DC bidirectional conversion device and control method thereof |
| CN111987809A (en) * | 2020-07-28 | 2020-11-24 | 东北林业大学 | Secondary control type LCC-S wireless charging system based on magnetic integration technology and orthogonal decoupling method |
| CN112290696A (en) * | 2020-10-27 | 2021-01-29 | 济南大学 | Wireless power transmission system and method capable of inhibiting frequency splitting phenomenon |
| CN114243951A (en) * | 2022-02-22 | 2022-03-25 | 中国人民解放军海军工程大学 | Magnetic coupling type wireless power transmission system without parameter identification |
| CN114724801A (en) * | 2022-04-06 | 2022-07-08 | 东南大学 | Telescopic planar spiral inductor structure |
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