CN206742975U - Inductance tuning circuit - Google Patents
Inductance tuning circuit Download PDFInfo
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- CN206742975U CN206742975U CN201621373616.4U CN201621373616U CN206742975U CN 206742975 U CN206742975 U CN 206742975U CN 201621373616 U CN201621373616 U CN 201621373616U CN 206742975 U CN206742975 U CN 206742975U
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- inductance
- tuning circuit
- transmitting terminal
- receiving terminal
- electric capacity
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Abstract
The utility model discloses a kind of inductance tuning circuit, and the inductance tuning circuit is applied to radio energy transmission system；The radio energy transmission system includes power supply, transmitting terminal and receiving terminal；The power supply is connected with transmitting terminal；The receiving terminal carries out electricity by magnetic resonance type with transmitting terminal and is wirelessly transferred；The inductance tuning circuit includes n level inductive circuits；The n is natural number；Inductive circuits at different levels are serially connected；The receiving terminal and transmitting terminal are respectively arranged with the n levels inductive circuit.Inductance tuning circuit of the present utility model can be adjusted to the transmitting terminal of radio energy transmission system and the resonant frequency of receiving terminal according to actual conditions, so as to improve the efficiency of transmission and stability of transmitting terminal and receiving terminal radio energy.
Description
Technical field
It the utility model is related to electric energy wireless transmission technical field, and in particular to a kind of electricity being wirelessly driven applied to electric energy
Feel tuning circuit.
Background technology
It is domestic with the further development of magnetic resonance type wireless power transmission technology and induction type wireless power transmission technology
Outside every practical application based on the technology have been directed to interactive " anury " smart home of the wireless discharge and recharge of electric automobile and power network,
The multiple fields such as implantable medical device is powered and the equipment of particular industry occasion is powered.Yet with the working frequency of system
The change of the parameters such as the inductance to system communications line circle is very sensitive, and system efficiency of transmission is stronger to frequency selectivity, transmission effect
Rate is easy to be influenceed by resonant frequency change.Therefore the stability of research system has turned into one in the technology application study
Hot issue.
Some transmission coils produced by related researcher to same batch form the intrinsic frequency of tuning circuit with electric capacity
Rate is counted, find reality application in, the parameter of electric capacity is typically relatively stable, but due to coil manufacturing technology,
The influence of the factor such as environmental change, the limitation of mounting condition and high-frequency circuit stray inductance and electric capacity, coil parameter skew feelings
Condition happens occasionally.The change of transmission coil parameter during system real work, often result in and launch with the intrinsic frequency of receiving coil not
It can match completely.System efficiency of transmission and coil q close relation, even therefore fixing in transmission range, receiving terminal
In the application that the electric energy of acquisition is powered to dead load, less coil parameter change, it is also possible to the obvious biography for reducing system
Defeated efficiency and stability.
Utility model content
In view of the shortcomings of the prior art, the purpose of this utility model is to provide a kind of rational in infrastructure and can effectively adjusted
The inductance tuning circuit of radio energy transmission system frequency, the inductance tuning circuit can effectively improve radio energy transmission system frequency
The efficiency of transmission of rate radio energy and transmission are stability.
To achieve the above object, the utility model adopts the following technical scheme that：
A kind of inductance tuning circuit, the inductance tuning circuit are applied to radio energy transmission system；The wireless power transmission
System includes power supply, transmitting terminal and receiving terminal；The power supply is connected with transmitting terminal；The receiving terminal passes through magnetic resonance with transmitting terminal
Formula carries out electricity and is wirelessly transferred；It is characterized in that：The inductance tuning circuit includes n level inductive circuits；The n is natural number；
Inductive circuits at different levels are serially connected；The receiving terminal and transmitting terminal are respectively arranged with the n levels inductive circuit.
Preferably, the inductive circuits at different levels include the first inductance and the first controlling switch respectively；First inductance with
First controlling switch is in parallel；First controlling switch is used to control corresponding first inductance connecting and disconnecting.
Preferably, first controlling switch includes the first two-way single-pole double-throw relay, the first triode and the first control
Device processed；The first two-way single-pole double-throw relay, the first triode, the first controller and the series connection of corresponding first inductance；Institute
The first controller is stated by controlling the low and high level of the first triode to control whether the first triode turns on；First triode
The gear of the first two-way single-pole double-throw relay connection is controlled according to the conducting state of its own.
Preferably, the inductance tuning circuit also includes one-level condenser network；The condenser network is connected with inductive circuit.
Preferably, the condenser network includes the first electric capacity and the second controlling switch；First electric capacity and the second control
Switch in parallel；Second controlling switch is used for the connecting and disconnecting for controlling the first electric capacity.
Preferably, second controlling switch includes the second two-way single-pole double-throw relay, the second triode and the first control
Device processed；The second two-way single-pole double-throw relay, the second triode, second controller and the series connection of corresponding first electric capacity；Institute
Second controller is stated by controlling the low and high level of the second triode to control whether the second triode turns on；Second triode
The gear of the second two-way single-pole double-throw relay connection is controlled according to the conducting state of its own.
Preferably, the condenser network connects to form the inductance tuning circuit with inductive circuit；The transmitting terminal and connect
Receiving end is connected the inductance tuning circuit respectively.
Preferably, the transmitting terminal includes first resistor, the 3rd inductance and the second electric capacity, the first resistor, the 3rd electricity
Sense, the second electric capacity and power supply are serially connected to form transmitting end loop.
Preferably, the receiving terminal includes second resistance, the 4th inductance and the 3rd electric capacity；The second resistance, the 4th electricity
Sense and the 3rd electric capacity are serially connected to form reception end loop.
Preferably, the receiving terminal includes also including purely resistive load, and the purely resistive load is series at second resistance and the
Between four inductance.
The beneficial effects of the utility model：
Inductance tuning circuit described in the utility model, by setting n level inductive circuits, it can be needed according to regulation by 0-
N inductive circuit is switched in or out, you can meets the resonant frequency of adjustment transmitting terminal and receiving terminal.And inductive circuits at different levels
The prosperous value of inductance is what is determined, so stability is higher during resonant frequency is adjusted, and then improves high wireless electric quantity transmission
The charge transport stability of system.Because the resonant frequency that can adjust transmitting terminal and receiving terminal is wireless so as to effectively improve
The charge transport efficiency of charge transport system.
In addition, in order to preferably improve the charge transport efficiency of wireless electric quantity Transmission system and stability, the utility model
Inductance tuning circuit can also connect one-level condenser network.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of wireless electric quantity Transmission system in embodiment of the present utility model；
Fig. 2 is a kind of schematic diagram of inductance tuning circuit in embodiment of the present utility model；
Fig. 3 is a kind of circuit diagram figure of inductance tuning circuit in embodiment of the present utility model.
Embodiment
Below, with reference to accompanying drawing and embodiment, the utility model is described further：
Reference picture 1 and Fig. 2, a kind of inductance tuning circuit described in the present embodiment, including including n levels inductive circuit 1.Institute
It is natural number to state n.Inductive circuits at different levels are serially connected.The inductance tuning circuit is applied to wireless electric quantity Transmission system, and this is wireless
Charge transport system includes power supply Us, transmitting terminal 101 and receiving terminal 102.The power supply Us is connected with transmitting terminal 101.It is described to connect
Receiving end 101 carries out electricity by magnetic resonance type with transmitting terminal 102 and is wirelessly transferred.The receiving terminal 102 and transmitting terminal 101 are set respectively
It is equipped with the inductance tuning circuit.
The inductive circuits 1 at different levels include the first inductance 11 and the first controlling switch 12 respectively.First inductance and
One controlling switch is in parallel.First controlling switch 12 is used to control the corresponding connecting and disconnecting of first inductance 11.First control
The quantity of switch 12 is n, i.e., inductive circuit 1 described in per one-level can be controlled by first controlling switch 12 respectively.It is described
First controlling switch 12 includes the first two-way single-pole double-throw relay 121, the first triode 122 and the first controller 123.Institute
The first two-way single-pole double-throw relay 121, the first triode 122, the first controller 123 and corresponding first inductance 11 is stated to go here and there
Connection.First controller 123 is by controlling the low and high level of the first triode 122 to control whether the first triode 122 leads
It is logical.First triode 122 controls the gear of the first two-way single-pole double-throw relay 121 connection according to the conducting state of its own
Position.
As preferred embodiment, the inductance tuning circuit can also include one-level condenser network 2.The electric capacity electricity
Connected with inductive circuit 1 on road 2.The condenser network 2 connects to form the inductance tuning circuit with inductive circuit 1.The transmitting
End 101 and receiving terminal 102 are connected the inductance tuning circuit respectively.In the present embodiment in radio energy transmission system, transmitting
The inductance tuning circuit that end 101 and receiving terminal 102 form comprising one-level condenser network 2 and n levels inductive circuit 1, inductance tuning
The resonant frequency of circuit calculates formula：
Wherein described f is resonant frequency, and L is the equivalent prosperous value of inductive circuit 1, and C is the equivalent capacitance value of condenser network 2.
The condenser network 2 includes the first electric capacity 21 and the second controlling switch 22.First electric capacity 21 and second controls
Switch 22 is in parallel.The quantity of second controlling switch 22 is one, i.e., the condenser network 2 can pass through second control
Switch 22 is controlled.Second controlling switch 22 is used for the connecting and disconnecting for controlling the first electric capacity 21.Second control
Switch 22 includes the second two-way single-pole double-throw relay 221, the second triode 222 and the first controller 223.Second two-way
Single-pole double-throw relay 221, the second triode 222 and the first controller 223 and corresponding first electric capacity 21 are connected；Described
Two controllers 223 are by controlling the low and high level of the second triode 222 to control whether the second triode 222 turns on；Described second
Triode 222 controls the gear of the second two-way single-pole double-throw relay 221 connection according to the conducting state of its own.
Reference picture 2, n levels inductive circuit 1 collectively constitutes n+1 levels inductance tuning electricity with one-level condenser network 2 in the present embodiment
Road, the gear of linear adjustable is 2n+1-1, is by the state for adjusting the first controlling switch 12 and the second controlling switch 22
The first electric capacity 21 in the first inductance 11 and one-level condenser network 2 in controllable n levels inductive circuit 1 whether become owner of by series connection
In circuit.
Electric capacity series connection calculation formula be：
Wherein, C1 and C2 is the capacitance for two electric capacity being serially connected, and C is the capacitance after series connection, and C is than C1 and C2
Value it is all small.
The series connection calculation formula of inductance is：
L=L1+L2 (3)
Wherein L1 and L2 is the prosperous value for two inductance being serially connected, and L is the capacitance after series connection, and L is than L1's and L2
Value is all big.
By formula (1), (2), (3), when the second controlling switch 22 disconnects, electric capacity 11 accesses, whole inductance tuning circuit
Capacitance can reduce, so as to improve the resonant frequency of whole inductance tuning circuit.Have first when the first controlling switch 12 disconnects
When inductance 11 accesses, the prosperous value of whole inductance tuning circuit can raise, so as to reduce the resonant frequency of whole inductance tuning circuit.
The operation principle of inductance tuning circuit of the present utility model is described by taking n+1 level tuning circuits as an example.The electricity
Sense tuning circuit has the first inductance of n levels 11 and the first electric capacity of one-level 12, can unidirectionally cover 2n-1 linear regulation gear, positive and negative double
To 2n+1-1 linear regulation gear of covering, the total value that the first inductance 11 and the first electric capacity 12 are all connected meets.The inductance is adjusted
Resonant frequency is identical with main circuit after the first whole inductance 11 of humorous circuit and the series connection of the first electric capacity 12, i.e., all accesses circuit
Afterwards, main circuit frequency is not influenceed.The gear of all controlling switches 22 of first controlling switch 21 and second is accessed and not accessed
When, this is the original state of the tuning circuit.When needing to increase frequency, first by the first whole inductance of inductance tuning circuit
11 and first electric capacity 12 access circuit, all controlling switches 22 of first controlling switch 21 and second are opened, that is, adjusted to 0
Gear.Then the first controlling switch 12 of first order inductance is broken as first gear, the henry value should meet that regulating frequency increases after disconnecting
Big value should be less than the degree of regulation of system requirements.First controlling switch 12 of first order inductance does not turn off, and disconnects second level inductance
The first controlling switch 12 be second gear, the henry value should meet that regulating frequency increment value after access should be less than the regulation of system requirements
Precision.The second controlling switch 22 for simultaneously switching off the first electric capacity 21 is third gear, and this is third gear.The rest may be inferred, until n levels electricity
Sense coordinates the 2n-1 gear that one-level electric capacity can cover.When needing reversely to reconcile, first by the first inductance 11 and the first electric capacity 21
It is all off, that is, adjust to 0 gear.The access of first order inductance is kept off for negative one again, first order inductance does not access, access second level electricity
Feel for minus two gear, while access electric capacity for minus three gear, by that analogy, until n levels inductance can cover-(2n-1) individual gear.
Shown in the 2n+1-1 gear regulation logic following table of n+1 level tuning circuits.The electricity of 1 this grade of condenser network of expression in figure
The perhaps inductance access circuit of inductive circuit, 0 represents not access.
The 2n+1 gear regulation logic list of n+1 level tuning circuits：
The inductance tuning circuit, which can directly connect, to be accessed in the inductance tuning circuit of radio energy transmission system, passes through electricity
The parameter adjustment of tuning circuit is felt, so as to change the resonant frequency of whole circuit.
Parameter analysis is now carried out by taking the radio energy transmission system of a reality as an example.
Because the parameter of electric capacity is typically relatively stable, it is also more accurate that frequency values must measure, and prosperous value is more difficult to accurately
Measurement, therefore the actual value Cr for the electric capacity that can be measured and actual resonant frequency value fr, then can be calculated by formula (1)
Go out actual prosperous value Lr.
It is located in the system of a reality, the scope that the resonant frequency of some resonance needs to adjust is fr-fs~fr+fs,
The requirement of frequency degree of regulation is F, then the unidirectional regulation gear N needed should have：
Then adjustment of inductance series n should meet：
2n-1≥N (5)
The tuning circuit is-(2n-1) gear after n-th grade of inductance access, then the prosperous value calculating formula of n-th grade of inductance is：
L=Ln+Lr (7)
Total prosperous value that n level inductance can be calculated by formula (3) is Lt, then capacitance obtains calculating formula and is：
The tuning circuit can design the regulation grade of response according to the actual requirements.Electricity is now tuned with 4+1 levels as shown in Figure 3
Circuit design is carried out exemplified by the topological structure of road.
Reference picture 3, J1 and J2 in Fig. 3 are expressed as the input/output terminal of inductance tuning circuit, for connecting into main circuit
In (transmitting terminal is received in the circuit at end).Wherein U1 to U4 is 1 to 4 grades of first two-way hilted broadswords for being used to control inductive circuit
Double-throw relay, for controlling whether inductance seals in circuit；U5 be for control the second two-way single-pole double throw of condenser network after
Electrical equipment, so as to control whether the first electric capacity seals in circuit.Q1 to Q5 is the nPn triodes of control relay state, and D1 to D5 is
Control terminal, whether turned on by low and high level control triode.L1 to L4 is tuning coil, and C is tuning capacitance.
The transmitting terminal includes first resistor Rs, the 3rd inductance Ls and the second electric capacity Cs, the first resistor Rs, the 3rd electricity
Sense Ls, the second electric capacity Cs and power supply are serially connected to form transmitting end loop.First resistor Rs described in Fig. 1, the 3rd inductance Ls and
Second electric capacity Cs is respectively equivalent resistance, equivalent inductance and the electric capacity of transmitting terminal.The receiving terminal includes second resistance Rd, the 4th
Inductance Ld and the 3rd electric capacity Gd.The second resistance Rd, the 4th inductance Ld and the 3rd electric capacity Gd are serially connected to form receiving terminal time
Road.The receiving terminal includes also including purely resistive load Rw, and purely resistive load Rw is series at second resistance Rd and the 4th inductance
Between Ld.Second resistance Rd described in Fig. 1, the 4th inductance Ld and the 3rd electric capacity Gd are respectively the equivalent resistance, equivalent of receiving terminal
Inductance and electric capacity.Coupling between the transmitting coil of transmitting terminal and the receiving coil of receiving terminal is carried out equivalent with mutual inductance, and mutual inductance is
M。
It will be apparent to those skilled in the art that technical scheme that can be as described above and design, make other various
Corresponding change and deformation, and all these changes and deformation should all belong to the protection of the utility model claims
Within the scope of.
Claims (7)
1. inductance tuning circuit, the inductance tuning circuit is applied to radio energy transmission system；The radio energy transmission system bag
Include power supply, transmitting terminal and receiving terminal；The power supply is connected with transmitting terminal；The receiving terminal is carried out with transmitting terminal by magnetic resonance type
Electricity is wirelessly transferred；It is characterized in that：The inductance tuning circuit includes n level inductive circuits；The n is natural number；Electricity at different levels
Inductive circuit is serially connected；The receiving terminal and transmitting terminal are respectively arranged with the n levels inductive circuit；The inductance tuning circuit is also
Including one-level condenser network；The condenser network is connected with inductive circuit.
2. inductance tuning circuit according to claim 1, it is characterised in that：The inductive circuits at different levels include first respectively
Inductance and the first controlling switch；First inductance is in parallel with the first controlling switch；First controlling switch is used to control accordingly
First inductance connecting and disconnecting.
3. inductance tuning circuit according to claim 2, it is characterised in that：First controlling switch includes the first two-way
Single-pole double-throw relay, the first triode and the first controller；The first two-way single-pole double-throw relay, the first triode,
First controller and the series connection of corresponding first inductance；First controller is by controlling the low and high level of the first triode to control
Whether the first triode turns on；First triode controls the first two-way single-pole double throw relay according to the conducting state of its own
The gear that device is connected.
4. inductance tuning circuit according to claim 1, it is characterised in that：The condenser network is connected shape with inductive circuit
Into the inductance tuning circuit；The transmitting terminal and receiving terminal are connected the inductance tuning circuit respectively.
5. according to the inductance tuning circuit described in claim any one of 1-3, it is characterised in that：The transmitting terminal includes the first electricity
Resistance, the 3rd inductance and the second electric capacity, the first resistor, the 3rd inductance, the second electric capacity and power supply are serially connected to form transmitting terminal
Loop.
6. according to the inductance tuning circuit described in claim any one of 1-3, it is characterised in that：The receiving terminal includes the second electricity
Resistance, the 4th inductance and the 3rd electric capacity；The second resistance, the 4th inductance and the 3rd electric capacity are serially connected to form reception end loop.
7. inductance tuning circuit according to claim 6, it is characterised in that：The receiving terminal includes also bearing including purely resistive
Carry, the purely resistive load is series between second resistance and the 4th inductance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621373616.4U CN206742975U (en) | 2016-12-14 | 2016-12-14 | Inductance tuning circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621373616.4U CN206742975U (en) | 2016-12-14 | 2016-12-14 | Inductance tuning circuit |
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| Publication Number | Publication Date |
|---|---|
| CN206742975U true CN206742975U (en) | 2017-12-12 |
Family
ID=60554414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621373616.4U Active CN206742975U (en) | 2016-12-14 | 2016-12-14 | Inductance tuning circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN206742975U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111827986A (en) * | 2020-09-03 | 2020-10-27 | 北京贝威通石油科技有限公司 | Near-bit wireless short transmission system and method |
-
2016
- 2016-12-14 CN CN201621373616.4U patent/CN206742975U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111827986A (en) * | 2020-09-03 | 2020-10-27 | 北京贝威通石油科技有限公司 | Near-bit wireless short transmission system and method |
| CN111827986B (en) * | 2020-09-03 | 2023-10-10 | 北京贝威通能源科技集团有限公司 | Near-bit wireless short transmission system and method |
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