CN209088635U - A kind of double-direction radio charge coil - Google Patents
A kind of double-direction radio charge coil Download PDFInfo
- Publication number
- CN209088635U CN209088635U CN201822169866.1U CN201822169866U CN209088635U CN 209088635 U CN209088635 U CN 209088635U CN 201822169866 U CN201822169866 U CN 201822169866U CN 209088635 U CN209088635 U CN 209088635U
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- coil
- tap
- circuit
- double
- direction radio
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of double-direction radio charge coil, it is made referring to Qi standard, the coil connection switch circuit, the switching circuit connection rectification circuit or inverter circuit, the rectification circuit or inverter circuit connection control circuit and load, it is characterized in that, the charge coil includes the first tap, the second tap and third tap；First tap connects internal coil diameter, and second tap is connected on the coil between internal diameter and outer diameter；Coil turn between first tap and the second tap is 8-11 circle, and the coil turn between first tap and third tap is 10-14 circle.The utility model is by changing three-core tap inductor structure, to change the magnetizing inductance and electric leakage parameter of double-direction radio charging unit transmitting terminal, to change the dividing ratios being supported in double-direction radio charging unit, to improve the output power of double-direction radio charging unit.
Description
Technical field
The utility model relates to wireless charging technical field more particularly to a kind of double-direction radio charge coils.
Background technique
Wireless power transmission technology is widely used in multiple fields at present, and wireless charging device generally uses induction coil
The mode incuded mutually realizes wireless charging, including wireless charging circuit transmitting terminal and wireless charging circuit receiving end.Radio
Energy transmission standard has also formulated three kinds, is Qi standard, PMA standard and A4WP standard respectively.Wherein, Qi standard and PMA standard institute
It is required that wireless power transmission resonant frequency in 100kHz to 350kHz range, wireless power transmission required by A4WP standard
Resonant frequency is 6.78MHz.
Common wireless induction coil generally works in the resonance frequency range of 110K~148Khz, and Qi standard is full
Sufficient said frequencies range.Under Qi standard, the lc circuit parameter of common wireless charging circuit transmitting terminal is 6.3uH/400nF,
The lc circuit parameter of common wireless charging circuit receiving end is 8uH/400nF, i.e. wireless charging circuit Plays receiving coil
Sensibility reciprocal when needing to be designed as 8uH or so, can obtain preferable user experience and biggish transimission power, but transmitting coil
Sensibility reciprocal when needing to be designed as 6.3uH or so, can just obtain preferable user experience and bigger transimission power.Current list
One sensibility reciprocal Wireless charging coil can only make one of them obtain preferable experience.
Since existing double-direction radio charging unit mainly looks after the function of charging receiving end, so that the function of charging transmitting terminal
Can be limited, user charged area is confined to 2mm2Interior, charge power is confined in 2.5W substantially, and charge efficiency is low, user's body
It is poor to test sense.
Therefore, the prior art is defective, needs to improve.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of double-direction radio charge coil.
The technical solution of the utility model is as follows: a kind of double-direction radio charge coil, makes referring to Qi standard, the coil
Connection switch circuit, the switching circuit connection rectification circuit or inverter circuit, the rectification circuit or inverter circuit connection control
Circuit processed and load；The control circuit is charging circuit or discharge circuit, the coil for switching entire charge-discharge system
Including the first tap, the second tap and third tap；One end of first tap connects internal coil diameter, described in other end connection
Switching circuit；One end of second tap is connected on the coil between internal diameter and outer diameter, and the other end connects the switch electricity
Road；One end of the third tap connects the outer end of the coil, and the other end connects the switching circuit；First tap with
Coil between second tap constitutes receiving coil or transmitting coil, and the coil between first tap and third tap is constituted
Transmitting coil or receiving coil；The coil switches receiving coil or transmitting coil by switching circuit, the receiving coil
Inductance close to discharge circuit receiving end resonance circuit inductance, the inductance of the discharge coil sends out close to charging circuit
Penetrate the inductance of the resonance circuit at end.
Further, the coil switches receiving coil or transmitting coil by switching circuit, first tap and the
Coil between two taps constitutes receiving coil, and the coil between first tap and third tap constitutes transmitting coil.
Further, the coil turn between first tap and the second tap be 8-11 circle, first tap and
Coil turn between third tap is 10-14 circle.
More preferably, the coil turn between first tap and third tap is 11 circles.
More preferably, the coil turn between first tap and the second tap is 9 circles.
Using the above scheme, the utility model provides a kind of double-direction radio charge coil referring to the production of Qi standard, can lead to
Change three-core tap inductor structure is crossed, thus change the magnetizing inductance and electric leakage parameter of double-direction radio charging unit transmitting terminal, from
And change the dividing ratios being supported in double-direction radio charging unit, to improve the output power of double-direction radio charging unit.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is artificial circuit figure when coil connects the first tap and third tap；
Fig. 3 is the simulation result of artificial circuit when coil connects the first tap and third tap；
Fig. 4 is artificial circuit figure when coil connects the first tap and the second tap；
Fig. 5 is the simulation result of artificial circuit when coil connects the first tap and the second tap.
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Qi standard is one of the production standard of coil, and referring to Qi standard, the outer diameter of coil is between 42.5~45.5mm, line
The internal diameter of circle is between 20.0~21.0mm, and for the thickness of coil between 2.1~2.5mm, the number of plies of coil is 1~2 layer, every layer
Coil turn be 10 circle.
Shown in referring to Fig.1, the utility model provides a kind of double-direction radio charge coil referring to the production of Qi standard.The line
11 connection switch circuits 12 are enclosed, the switching circuit 12 connects rectification circuit or inverter circuit 13, the rectification circuit or inversion
Circuit 13 connects control circuit and load 14, and the control circuit is charging circuit or electric discharge for switching entire charge-discharge system
Circuit.The control circuit includes controller as one embodiment.
The coil includes the first tap 111, the second tap 112 and third tap 113；The one of first tap 111
End connection internal coil diameter, the other end connect the switching circuit；One end of second tap 112 be connected to internal diameter and outer diameter it
Between coil on, the other end connects the switching circuit；One end of the third tap 113 connects the outer end of the coil, separately
One end connects the switching circuit；Coil between first tap 111 and the second tap 112 constitutes receiving coil or transmitting
Coil, the coil between first tap 111 and third tap 113 constitute transmitting coil or receiving coil；The coil is logical
It crosses switching circuit 12 and switches receiving coil or transmitting coil, the inductance of the receiving coil is close to the humorous of discharge circuit receiving end
Shake the inductance of circuit, the inductance of the discharge coil close to charging circuit transmitting terminal resonance circuit inductance.
When the loaded work piece operation that rectification circuit or inverter circuit connect, coil is receiving coil, receives electric energy；When whole
Current circuit or the control circuit of inverter circuit connection are charging control circuit, and are worked when running, and the coil is transmitting coil,
Emit electric energy.
Under Qi standard, the lc circuit parameter of common wireless charging circuit transmitting terminal is 6.3uH/400nF, common nothing
The lc circuit parameter of line charging circuit receiving end is 8uH/400nF, i.e. the sensibility reciprocal of wireless charging circuit Plays receiving coil needs
When being designed as 8uH or so, preferable user experience and biggish transimission power can be obtained, but the sensibility reciprocal of transmitting coil needs
When being designed as 6.3uH or so.Therefore, the coil between first tap 111 and the second tap 112 constitutes receiving coil,
Coil between first tap 111 and third tap 113 constitutes transmitting coil.First tap 111 and the second tap
Coil turn between 112 is 8-11 circle, and the coil turn between first tap 111 and third tap is preferably
10-14 circle.In above range, the lc circuit of the inductance of the transmitting coil of the coil turn close to wireless charging circuit transmitting terminal
Parameter 6.3uH/400nF；The lc circuit parameter of the inductance of receiving coil close to wireless charging circuit receiving end is 8uH/
Therefore 400nF, user can obtain preferable charge and discharge experience.
To obtain larger output power, the coil turn between first tap 111 and third tap 113 is 11 circles,
And the sensibility reciprocal 8uH or so for making receiving coil, similarly, the coil turn between first tap 111 and the second tap 112 is
9 circles, and the sensibility reciprocal 6.3uH or so for making transmitting coil.Shown in referring to Fig.1, in the present embodiment, switch S1 is detained in switching circuit
It closes, when switch S2 is disconnected, the coil between the first tap 111 and third tap 113 constitutes transmitting coil.It is switched in switching circuit
S2 is fastened, and when switch S1 is disconnected, the coil between the first tap 111 and the second tap 112 constitutes receiving coil.
Since existing double-direction radio charging unit mainly looks after the function of charging receiving end, so that the function of charging transmitting terminal
It can be limited.The process that the present embodiment carries out coupled discharge to the coil of double-direction radio charging unit carries out software emulation, is emulating
In circuit, double-direction radio charging unit can be reduced to power supply 15 and coil transmissions terminal circuit 11, and coupling charging unit can be reduced to
Coil receiving terminal circuit 21, rectification circuit 22 and load 23.When the three tapped inductance structure of change, i.e. 11 structure of coil
When change, coil transmissions terminal circuit 11 is changed correspondingly.
When coil connects the first tap 111 and third tap 113, the magnetizing inductance of coil transmissions terminal circuit 11 is
10.788uH, leakage inductance 6.2uH, copper loss resistance are 274.6 Ω.The present embodiment carries out coupling to the coil of double-direction radio charging unit
The process for closing electric discharge carries out software emulation, and artificial circuit is as shown in Fig. 2, power supply is 5V, 110Khz square wave in artificial circuit.Emulation
As a result as shown in figure 3, it is found that the maximum power of coil coupled discharge can only achieve 2.77 power.
When coil connects the first tap 111 and the second tap 112, the magnetizing inductance of coil transmissions terminal circuit 11 is
7.840uH, leakage inductance 4.5605uH, copper loss resistance are 253.8 Ω, and the present embodiment carries out the coil of double-direction radio charging unit
The process of coupled discharge carries out software emulation, and artificial circuit is as shown in figure 4, power supply is 5V in artificial circuit, 110Khz square wave, only
Change coil transmissions terminal circuit.Simulation result is as shown in figure 5, it is found that the maximum power of coil coupled discharge can reach 4.58
Power, discharging efficiency promote 65.3%.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle
Within the scope of shield.
Claims (5)
1. a kind of double-direction radio charge coil makes, the coil connection switch circuit referring to Qi standard, the switching circuit connects
Rectification circuit or inverter circuit are connect, the rectification circuit or inverter circuit connect control circuit and load；The control circuit is used
It is charging circuit or discharge circuit in switching entire charge-discharge system, which is characterized in that the coil includes the first tap, second
Tap and third tap；One end of first tap connects internal coil diameter, and the other end connects the switching circuit；Described second
One end of tap is connected on the coil between internal diameter and outer diameter, and the other end connects the switching circuit；The third tap
One end connects the outer end of the coil, and the other end connects the switching circuit；Line between first tap and the second tap
Circle constitutes receiving coil or transmitting coil, and the coil between first tap and third tap constitutes transmitting coil or receives line
Circle；The coil switches receiving coil or transmitting coil by switching circuit, and the inductance of the receiving coil is electric close to electric discharge
The inductance of the resonance circuit of road receiving end, the resonance circuit of the inductance of the discharge coil close to charging circuit transmitting terminal
Inductance.
2. double-direction radio charge coil according to claim 1, which is characterized in that first tap and the second tap it
Between coil constitute receiving coil, coil between first tap and third tap constitutes transmitting coil.
3. double-direction radio charge coil according to claim 1, which is characterized in that first tap and the second tap it
Between coil turn be 8-11 circle, coil turn between first tap and third tap is that 10-14 is enclosed.
4. double-direction radio charge coil according to claim 1, which is characterized in that first tap and third tap it
Between coil turn be 11 circle.
5. double-direction radio charge coil according to claim 1, which is characterized in that first tap and the second tap it
Between coil turn be 9 circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822169866.1U CN209088635U (en) | 2018-12-21 | 2018-12-21 | A kind of double-direction radio charge coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822169866.1U CN209088635U (en) | 2018-12-21 | 2018-12-21 | A kind of double-direction radio charge coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209088635U true CN209088635U (en) | 2019-07-09 |
Family
ID=67127302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822169866.1U Expired - Fee Related CN209088635U (en) | 2018-12-21 | 2018-12-21 | A kind of double-direction radio charge coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209088635U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021093704A1 (en) * | 2019-11-14 | 2021-05-20 | Oppo广东移动通信有限公司 | Apparatus and system to be charged, wireless charging method, and storage medium |
| WO2022022586A1 (en) * | 2020-07-30 | 2022-02-03 | 深圳市中孚能电气设备有限公司 | Bidirectional wireless charging apparatus, bidirectional wireless charging control method, and bidirectional charging headlight |
-
2018
- 2018-12-21 CN CN201822169866.1U patent/CN209088635U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021093704A1 (en) * | 2019-11-14 | 2021-05-20 | Oppo广东移动通信有限公司 | Apparatus and system to be charged, wireless charging method, and storage medium |
| WO2022022586A1 (en) * | 2020-07-30 | 2022-02-03 | 深圳市中孚能电气设备有限公司 | Bidirectional wireless charging apparatus, bidirectional wireless charging control method, and bidirectional charging headlight |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190709 Termination date: 20211221 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |