CN108448692A - A kind of electric vehicle wireless charging topological structure with offset adaptivity - Google Patents
A kind of electric vehicle wireless charging topological structure with offset adaptivity Download PDFInfo
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- CN108448692A CN108448692A CN201810133099.0A CN201810133099A CN108448692A CN 108448692 A CN108448692 A CN 108448692A CN 201810133099 A CN201810133099 A CN 201810133099A CN 108448692 A CN108448692 A CN 108448692A
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- 239000003990 capacitor Substances 0.000 claims description 9
- 239000000696 magnetic material Substances 0.000 claims description 2
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- 230000000295 complement effect Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 230000003044 adaptive effect Effects 0.000 description 3
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- 238000005299 abrasion Methods 0.000 description 1
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Classifications
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- H02J7/025—
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- H02J5/005—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of electric vehicle wireless charging topological structures with offset adaptivity, including DC power supply, inverter circuit, primary side series compensation capacitance, primary side transmitting coil and two groups of pair side receiving circuits；Wherein secondary side receiving portion is by the way of two individual reception coils, and coil output independently connects compensation circuit and rectification circuit, is carried out in the DC side of rectification output in parallel so that two individual reception coils neither influence each other, and can be with complementary duty；When shifting, the coupling of a coil declines present system, and the coupling of another coil rises, and since the two exports respectively independently, is only overlapped in DC side, therefore it is complete complementary to transmit；In conjunction with secondary side shunt capacitance and the compensation topology of series inductance so that present system can maintain stable power transmission in larger deviation range.
Description
Technical field
The invention belongs to electric vehicle wireless charging technical fields, and in particular to a kind of to have the electronic of offset adaptivity
Automobile wireless charging topological structure.
Background technology
Along with energy problem and the getting worse of environmental problem, hybrid vehicle and pure electric automobile with its ring
The advantages such as guarantor, convenient cause people more and more to pay close attention to, and non-contact type electric energy transmission technology utilizes non-contact transformer to realize
The wireless transmission of energy has many advantages, such as safety, easy to operate simple, contactless abrasion, without directly electrical connection.Therefore, this
The new electric energy transmission form of one industry extensive concern is of great significance for following development, and extremely competitive
Hot spot.
Non-contact transformer is the core of non-contact electric energy transmission system, and the topology knot of its compensation way and system
Structure is exactly the critical issue of non-contact electric energy transmission system research all the time.In order to realize the good parameter adaptation energy of system
Power, transmission characteristic and its stability, it is desirable to when corresponding compensation way and system topological can realize system parameter variations
Adaptability, such as offset system and load variation.
The compensation way of current common non-contact converter be primary side series connection/pair while connect, primary side series connection/pair while simultaneously
Join, the primary side parallel connection/secondary parallel connection in series connection, primary side parallel connection/pair, corresponding topological structure is that single-shot is penetrated to single reception or multi-emitting
To receiving more.These compensation ways and topological structure have some limitations, and compensation way is more quick to circuit parameter variations
Sense, such as the gain characteristic of system can accordingly change when load variation；It is unable to maintain that when transmitting shifts with reception preferably
Energy transmission, or even there is the case where system can not carry out energy transmission.
The loop construction and compensation topology of existing wireless charging system are when former secondary side position shifts, former secondary coil
Coupling effect and the transmittability of system can decline rapidly, or even will appear zero Coupling point that power transmission is zero, to lead
Cause the anti-offset behavior of whole system poor, when being applied to electric vehicle wireless charging, the vehicle parking position offset the case where
Under can largely effect on charging effect, cause system inconvenient to use.
Invention content
In view of above-mentioned, the present invention provides a kind of electric vehicle wireless charging topological structure with offset adaptivity,
The structure can exist with receiving coil position there are power transmission, system transmission characteristics are steadily carried out when larger offset in transmitting
It generates unaffected in the deviation range of a half-size scale.
A kind of electric vehicle wireless charging topological structure with offset adaptivity, including：DC power supply, inversion electricity
Road, primary side series compensation capacitance, primary side transmitting coil and two groups of pair side receiving circuits；The DC side of the inverter circuit with it is straight
Galvanic electricity source connects, the output direct current of DC power supply is converted into high-frequency alternating current, one end of inverter circuit exchange side with
One end of primary side series compensation capacitance is connected, and the other end of primary side series compensation capacitance is connected with one end of primary side transmitting coil,
The other end of primary side transmitting coil is connected with the other end of inverter circuit exchange side；The pair is received when receiving circuit includes secondary
Coil, secondary series compensation inductance and rectification circuit, the pair side receiving coil in Shunt compensation capacitor, pair emit with primary side
Coil passes through electromagnetic coupling, secondary one end and secondary side series compensation electricity in one end of receiving coil with Shunt compensation capacitor when pair
One end of sense is connected, and the other end of secondary side series compensation inductance is connected with one end of rectification circuit exchange side, and the pair side receives
The other end of coil is connected with the other end of the other end of secondary side Shunt compensation capacitor and rectification circuit exchange side；Two groups of pair sides
It is charging batteries of electric automobile after rectification circuit DC side parallel in receiving circuit.
When former secondary coil shifts, under the mutual cooperation of two groups of pair side receiving circuits, structure of the invention can be with
Good offset adaptive performance is presented, system can maintain stable power transmission in larger deviation range.
Further, the inverter circuit uses semi-bridge inversion structure, full-bridge inverting structure or push-pull type inverter structure.
Further, the primary side transmitting coil and secondary side receiving coil are using the magnetic core for being wound with litz wire, the magnetic
Core uses permeability magnetic material.
Further, receiving coil mutually decouples when secondary in receiving circuit of two groups of pairs.
Further, it is described it is secondary while Shunt compensation capacitor respectively with it is secondary while receiving coil and pair side series compensation inductance resonance
Matching.
Pair side receiving portion of the invention is by the way of two individual reception coils, and coil output independently connects compensation electricity
Road and rectification circuit carry out in parallel so that two individual reception coils neither influence each other, and can in the DC side of rectification output
With complementary duty；When shifting, the coupling of a coil declines present system, and the coupling of another coil rises, by
It exports respectively independently in the two, is only overlapped in DC side, therefore it is complete complementary to transmit；In conjunction with secondary side shunt capacitance
And the compensation topology of series inductance so that present system can maintain stable power transmission in larger deviation range.
Description of the drawings
Fig. 1 is the structural schematic diagram of wireless charging system of the present invention.
Fig. 2 (a) and Fig. 2 (b) is respectively the structural schematic diagram of two kinds of forms of loosely coupled transformer of the present invention.
Fig. 3 is the relation schematic diagram of wireless charging system original secondary coil offset dimensions and the coefficient of coup of the present invention.
Fig. 4 (a) is the equivalent-circuit model schematic diagram of wireless charging system of the present invention.
Fig. 4 (b) is the structural schematic diagram after two absolute coil of present system pair side and its circuit equivalent.
Fig. 5 is the voltage gain curve synoptic diagram of wireless charging system of the present invention.
Specific implementation mode
In order to more specifically describe the present invention, below in conjunction with the accompanying drawings and specific implementation mode is to technical scheme of the present invention
It is described in detail.
As shown in Figure 1, the present invention has the electric vehicle wireless charging topological structure of offset adaptive characteristic, including successively
The DC power supply 1 of connection, inverter circuit 2, primary side series compensation capacitance 3, the former secondary receiving circuit in coupling coil 4 and pair；
DC power supply 1 is connect with inverter circuit 2, provides high-frequency ac power；Primary side series compensation capacitance 3 is connected with primary side transmitting coil
In the output end of inverter circuit 2；Secondary in receiving circuit is compensation circuit and its whole when two individual reception coils connection two is independent secondary
Filter circuit 9 and 10 is flowed, is charged for batteries of electric automobile 11 after exporting DC parallel；Former pair side coupling coil 4 occurs partially
When shifting, under the mutual cooperation of two individual reception circuits, which can be presented good offset adaptive performance, and system can be with
Stable power transmission is maintained in larger deviation range.
Primary side series compensation capacitance 3, the secondary series compensation inductance 7 and 8 in Shunt compensation capacitor 5 and 6, pair and former secondary side coupling
Zygonema circle 4 constitutes resonant network；The current rectifying and wave filtering circuit 9 and 10 on secondary side is converted to the high-frequency alternating current that resonant network exports directly
Galvanic electricity simultaneously carries out Parallel opertation to batteries of electric automobile 11.
The structure of transmitting coil and receiving coil both may be used the primary side as shown in Fig. 2 (a) and individually emit in the present invention
The form of two coil, secondary side individual reception coils；The symmetric pattern as shown in Fig. 2 (b), i.e. primary side two can also be used solely
Vertical transmitting coil, the single receiving coil in secondary side；Between wherein two absolute coils both on magnetic circuit without intercoupling, also exporting
On not circuit be directly connected to.
For the feasibility of the verification present invention, experimental verification, present embodiment transmitting are carried out to transmitting coil and receiving coil
Coil and receiving coil size are 600mm*600mm, and primary coil is opposite with secondary coil and sets, the distance on spatial altitude
200mm, primary coil are all made of 0.1mm*400 bursts of litz wire coilings with secondary coil.
Fig. 3 is coupling measurement of the application example under different offsets as a result, being shown by Fig. 3 as it can be seen that in fixed former secondary side face
Under conditions of spacing 200mm, when coil shifts, primary side declines the coupling of the one of coil in secondary side, and to another
The coupling of a coil rises, and due to two coil of secondary side independence, primary side is that the two is superimposed to the whole coupling effect on secondary side.By
As can be seen that former secondary coil entirety coupling effect is insensitive to drift condition in Fig. 3, when the offset of a half-size scale occurs,
System can still keep higher coupling horizontal.
Fig. 4 (a) is the ac equivalent circuit model of wireless charging topological structure of the present invention, wherein CpFor primary side series compensation
Capacitance, LpFor transmitting coil leakage inductance, Ls1And Ls2The respectively leakage inductance of two individual reception coil of secondary side, k1、k2For primary coil point
Not with the coefficient of coup of two coil of secondary side, Cs1、Cs2For secondary side Shunt compensation capacitor, L1、L2For secondary side series compensation inductance.If setting
The secondary side parameter of meter makes Ls1=Ls2=L1=L2、Cs1=Cs2, then secondary two absolute coil of side and its circuit can be equivalent to Fig. 4 (b) institutes
Show, wherein
Fig. 5 is the voltage gain curve of wireless charging topological structure of the present invention, from the graph it can be seen that when system works
In designed resonant frequency point, transmission characteristic, that is, voltage gain will not change with the variation of load, Neng Gouwei
The voltage gain transmission characteristic for keeping steady fixed, therefore for the load that batteries of electric automobile this impedance operator changes greatly,
The system can be well adapted for this load object.
The above-mentioned description to embodiment can be understood and applied the invention for ease of those skilled in the art.
Person skilled in the art obviously easily can make various modifications to above-described embodiment, and described herein general
Principle is applied in other embodiment without having to go through creative labor.Therefore, the present invention is not limited to the above embodiments, ability
Field technique personnel announcement according to the present invention, the improvement made for the present invention and modification all should be in protection scope of the present invention
Within.
Claims (5)
1. a kind of electric vehicle wireless charging topological structure with offset adaptivity, which is characterized in that including：Direct current
Source, inverter circuit, primary side series compensation capacitance, primary side transmitting coil and two groups of pair side receiving circuits；The inverter circuit
DC side is connect with DC power supply, the output direct current of DC power supply is converted into high-frequency alternating current, inverter circuit exchange
One end of side is connected with one end of primary side series compensation capacitance, the other end and the primary side transmitting coil of primary side series compensation capacitance
One end is connected, and the other end of primary side transmitting coil is connected with the other end of inverter circuit exchange side；Pair side receiving circuit packet
Include secondary Shunt compensation capacitor, secondary side series compensation inductance and rectification circuit in receiving coil, pair, pair side receiving coil
Pass through electromagnetic coupling, secondary one end in one end of receiving coil with Shunt compensation capacitor when pair and secondary side with primary side transmitting coil
One end of series compensation inductance is connected, and the other end of secondary side series compensation inductance is connected with one end of rectification circuit exchange side, institute
State the secondary other end in receiving coil and the other end of Shunt compensation capacitor when pair and the other end phase of rectification circuit exchange side
Even；It is charging batteries of electric automobile after rectification circuit DC side parallel in two groups of pair side receiving circuits.
2. electric vehicle wireless charging topological structure according to claim 1, it is characterised in that：The inverter circuit uses
Semi-bridge inversion structure, full-bridge inverting structure or push-pull type inverter structure.
3. electric vehicle wireless charging topological structure according to claim 1, it is characterised in that：The primary side transmitting coil
With secondary side receiving coil using the magnetic core for being wound with litz wire, the magnetic core uses permeability magnetic material.
4. electric vehicle wireless charging topological structure according to claim 1, it is characterised in that：Two groups of pair side receiving circuits
In secondary side receiving coil mutually decouple.
5. electric vehicle wireless charging topological structure according to claim 1, it is characterised in that：Pair side shunt compensation
Capacitance is matched with the secondary series compensation inductance resonance in receiving coil and pair respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810133099.0A CN108448692A (en) | 2018-02-09 | 2018-02-09 | A kind of electric vehicle wireless charging topological structure with offset adaptivity |
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| CN201810133099.0A CN108448692A (en) | 2018-02-09 | 2018-02-09 | A kind of electric vehicle wireless charging topological structure with offset adaptivity |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109130903A (en) * | 2018-08-29 | 2019-01-04 | 昆明理工大学 | A kind of low-pressure high-power wireless charging system of bilateral LCCL-T topology |
| CN109245231A (en) * | 2018-10-29 | 2019-01-18 | 浙江大学 | A kind of wireless charging topological structure with nature constant pressure and flow output characteristics |
| CN109274183A (en) * | 2018-11-09 | 2019-01-25 | 西南交通大学 | A kind of radio energy transmission system with highly resistance offset characteristic |
| CN109835201A (en) * | 2019-03-26 | 2019-06-04 | 中国矿业大学 | A kind of wireless charging system for electric automobile electromagnetic mechanism and preparation method thereof |
| CN110571947A (en) * | 2019-10-17 | 2019-12-13 | 上海瞳鳗智能科技有限公司 | Multifunctional mode circuit and wireless power transmission system |
| CN110729820A (en) * | 2019-07-15 | 2020-01-24 | 国网江西省电力有限公司电力科学研究院 | Unmanned aerial vehicle and machine carries wireless receiving element, for its wireless anti skew coupling coil who charges thereof |
| CN111682651A (en) * | 2020-05-25 | 2020-09-18 | 哈尔滨工业大学 | Skew enhancement mode developments wireless charging structure |
| CN112260414A (en) * | 2020-10-14 | 2021-01-22 | 浙江大学 | Wireless power transmission device using three-coil structure to improve anti-deviation capability |
| CN112491154A (en) * | 2020-11-13 | 2021-03-12 | 哈尔滨工业大学 | Multi-module SISO circuit topology and control method for receiving end of high-power dynamic wireless power supply system of electric automobile |
| CN112751428A (en) * | 2021-01-21 | 2021-05-04 | 武汉大学 | Working condition adaptive multi-channel interconnected wireless power supply system and method |
| WO2021093708A1 (en) * | 2019-11-14 | 2021-05-20 | Oppo广东移动通信有限公司 | Wireless charging apparatus, device to be charged, charging system and method, and storage medium |
| CN115246330A (en) * | 2022-07-21 | 2022-10-28 | 广西电网有限责任公司电力科学研究院 | Wireless charging primary side topology self-adaptive control method and system for electric automobile |
| CN115447409A (en) * | 2022-08-10 | 2022-12-09 | 广西电网有限责任公司电力科学研究院 | Wireless charging automobile secondary side voltage feedback system based on additional coupling channel |
| CN116231883A (en) * | 2023-03-21 | 2023-06-06 | 广东工业大学 | Multi-degree-of-freedom symmetrical dynamic circuit compensation topological structure |
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| CN106828174A (en) * | 2017-03-13 | 2017-06-13 | 西南交通大学 | A kind of enhanced wireless charging system in multi-emitting source |
| CN106887902A (en) * | 2017-03-21 | 2017-06-23 | 重庆大学 | The electromagnetic coupling mechanisms of electric motor car wireless power |
| US20170240055A1 (en) * | 2016-02-18 | 2017-08-24 | Denso International America, Inc. | Optimized Compensation Coils For Wireless Power Transfer System |
| CN107317401A (en) * | 2017-08-10 | 2017-11-03 | 易事特集团股份有限公司 | Anti- skew constant pressure output radio energy transmission system |
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| US20170240055A1 (en) * | 2016-02-18 | 2017-08-24 | Denso International America, Inc. | Optimized Compensation Coils For Wireless Power Transfer System |
| CN106208414A (en) * | 2016-08-05 | 2016-12-07 | 西南交通大学 | The inductive electric energy transmission system of energy many primary coils of resonance compensation automatically |
| CN106532980A (en) * | 2016-12-13 | 2017-03-22 | 西南交通大学 | Non-contact type dynamic power supply system coil for trains in rail transit |
| CN106533185A (en) * | 2016-12-29 | 2017-03-22 | 哈尔滨工业大学 | Wireless electric energy transmission system compensation topological structure |
| CN106828174A (en) * | 2017-03-13 | 2017-06-13 | 西南交通大学 | A kind of enhanced wireless charging system in multi-emitting source |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109130903A (en) * | 2018-08-29 | 2019-01-04 | 昆明理工大学 | A kind of low-pressure high-power wireless charging system of bilateral LCCL-T topology |
| CN109245231A (en) * | 2018-10-29 | 2019-01-18 | 浙江大学 | A kind of wireless charging topological structure with nature constant pressure and flow output characteristics |
| CN109274183A (en) * | 2018-11-09 | 2019-01-25 | 西南交通大学 | A kind of radio energy transmission system with highly resistance offset characteristic |
| CN109835201A (en) * | 2019-03-26 | 2019-06-04 | 中国矿业大学 | A kind of wireless charging system for electric automobile electromagnetic mechanism and preparation method thereof |
| CN110729820A (en) * | 2019-07-15 | 2020-01-24 | 国网江西省电力有限公司电力科学研究院 | Unmanned aerial vehicle and machine carries wireless receiving element, for its wireless anti skew coupling coil who charges thereof |
| CN110729820B (en) * | 2019-07-15 | 2023-12-26 | 国网江西省电力有限公司电力科学研究院 | Unmanned aerial vehicle and take wireless receiving element and take anti skew coupling coil for its wireless charging |
| CN110571947A (en) * | 2019-10-17 | 2019-12-13 | 上海瞳鳗智能科技有限公司 | Multifunctional mode circuit and wireless power transmission system |
| WO2021093708A1 (en) * | 2019-11-14 | 2021-05-20 | Oppo广东移动通信有限公司 | Wireless charging apparatus, device to be charged, charging system and method, and storage medium |
| CN111682651B (en) * | 2020-05-25 | 2023-09-08 | 哈尔滨工业大学 | Offset enhanced dynamic wireless charging structure |
| CN111682651A (en) * | 2020-05-25 | 2020-09-18 | 哈尔滨工业大学 | Skew enhancement mode developments wireless charging structure |
| CN112260414A (en) * | 2020-10-14 | 2021-01-22 | 浙江大学 | Wireless power transmission device using three-coil structure to improve anti-deviation capability |
| CN112491154A (en) * | 2020-11-13 | 2021-03-12 | 哈尔滨工业大学 | Multi-module SISO circuit topology and control method for receiving end of high-power dynamic wireless power supply system of electric automobile |
| CN112751428A (en) * | 2021-01-21 | 2021-05-04 | 武汉大学 | Working condition adaptive multi-channel interconnected wireless power supply system and method |
| CN115246330A (en) * | 2022-07-21 | 2022-10-28 | 广西电网有限责任公司电力科学研究院 | Wireless charging primary side topology self-adaptive control method and system for electric automobile |
| CN115447409A (en) * | 2022-08-10 | 2022-12-09 | 广西电网有限责任公司电力科学研究院 | Wireless charging automobile secondary side voltage feedback system based on additional coupling channel |
| CN116231883A (en) * | 2023-03-21 | 2023-06-06 | 广东工业大学 | Multi-degree-of-freedom symmetrical dynamic circuit compensation topological structure |
| CN116231883B (en) * | 2023-03-21 | 2023-09-15 | 广东工业大学 | Multi-degree-of-freedom symmetrical dynamic circuit compensation topological structure |
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Application publication date: 20180824 |