CN107508386A - A kind of onboard wireless charging circuit of low interference - Google Patents
A kind of onboard wireless charging circuit of low interference Download PDFInfo
- Publication number
- CN107508386A CN107508386A CN201710638697.9A CN201710638697A CN107508386A CN 107508386 A CN107508386 A CN 107508386A CN 201710638697 A CN201710638697 A CN 201710638697A CN 107508386 A CN107508386 A CN 107508386A
- Authority
- CN
- China
- Prior art keywords
- unit
- wireless charging
- onboard wireless
- charging circuit
- end connection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000033228 biological regulation Effects 0.000 claims abstract description 16
- 230000001629 suppression Effects 0.000 claims 1
- 230000005855 radiation Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/02—Arrangements for reducing harmonics or ripples
-
- 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
- H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
-
- H02J7/025—
Abstract
The present invention relates to onboard wireless charging technique field, specifically disclose a kind of onboard wireless charging circuit of low interference, including input power unit, common-mode signal suppresses unit and DC DC pressure regulation units, the input power unit connection common mode signal suppresses unit, the common-mode signal suppresses unit connection DC DC pressure regulation units, also include full-bridge driver element, coil selecting unit and LC resonant elements, the input of the output end connection full-bridge driver element of the DC DC pressure regulation units, output one end connection coil selecting unit of the full-bridge driver element, the other end connects LC resonant elements.The π types filter unit and RC absorptive units of the present invention can absorb secondary above harmonic wave, effectively reduce power supply radiation, and it can be very good to absorb peak voltage and electric current by π type filter units, electromagnetic signal and noise signal caused by input power unit and full-bridge driver element switch are suppressed, secondary above harmonic wave is filtered out, does not interfere with the normal operation of other vehicle-mounted electronic equipments.
Description
Technical field
The present invention relates to onboard wireless charging technique field, more particularly to a kind of onboard wireless charging circuit of low interference.
Background technology
With the continuous improvement of science and technology and living standard, wireless charging technology also reaches its maturity, when wireless charging skill
When art enters automotive field, EMC Electro Magnetic Compatibilities are just particularly important.
EMC（Electro Magnetic Compatibility）, refer to that equipment or system meet in its electromagnetic environment
It is required that operation does not produce the ability of intolerable electromagnetic interference to any equipment in its environment.Therefore, EMC includes two
The requirement of aspect：On the one hand refer to equipment in normal course of operation to electromagnetic interference caused by the environment of place no more than certain
Limit value；On the other hand refer to that utensil has a certain degree of immunity to interference, i.e. electromagnetism to electromagnetic interference present in the environment of place
Sensitiveness.
Common interference of the onboard wireless charging technique to electronic device in automobile and circuit is wiring board in radio-circuit device
On the transmitting such as circuit, coil electromagnetic wave signal, the interference of these electromagnetic wave signals can destroy the normal operation of miscellaneous part,
Entail dangers to traffic safety when serious.
The content of the invention
For above-mentioned technical problem, the invention provides one kind can effectively absorb secondary above harmonic wave, to power supply
Electromagnetic signal and noise signal suppressed, effectively reduce radiation, will not to other vehicle-mounted electronic equipments formed interference it is low
The onboard wireless charging circuit of interference.
In order to solve the above-mentioned technical problem, concrete scheme provided by the invention is as follows：A kind of onboard wireless of low interference fills
Circuit, including input power unit, common-mode signal suppress unit and DC-DC pressure regulation units, the input power unit connection
Common-mode signal suppresses unit, and the common-mode signal suppresses unit connection DC-DC pressure regulation units, it is characterised in that：Also include full-bridge
Driver element, coil selecting unit and LC resonant elements, the output end connection full-bridge driver element of the DC-DC pressure regulation unit
Input, output one end connection coil selecting unit of the full-bridge driver element, other end connection LC resonant elements.
Preferably, the full-bridge driver element includes MOS switch pipe Q1, Q2, Q6 and Q7, and the input of the Q1 and Q2 connect
The output end of DC-DC pressure regulation units is connect, the output end connection Q6 of Q1 input, the output end connection Q7's of the Q2 is defeated
Enter end, the output head grounding of the Q6 and Q7.
Preferably, described MOS switch pipe Q1, Q2, Q6 and Q7 are parallel with RC absorptive units, absorb second harmonic, effectively
Reduce radiation.
Preferably, the output end of the full-bridge driver element is also associated with π type filter units, and it is dry to filter out second harmonic reduction
Disturb,.
Preferably, the output end of the π types filter unit is also parallel with RC absorptive units, filters out and absorbs second harmonic,
Interference is reduced, effectively reduces radiation.
Preferably, output one end connection coil selecting unit of the π types filter unit, other end connection LC resonance lists
Member.
Preferably, the LC resonant elements include electric capacity C10 and transmitting coil, the output end connection hair of the electric capacity C10
A ﹢, the B ﹢ of ray circle and C ﹢ ports.
Preferably, the coil selecting unit includes MOS switch pipe Q3, Q4 and Q5, described Q3, Q4 and Q5 output end point
Not Lian Jie transmitting coil A ﹣, B ﹣ and C ﹣ ports, the port connection of coil selecting unit and transmitting coil must correspond, carry
High filtration result.
Preferably, RC is parallel between A ﹢ and the A ﹣ of the transmitting coil, between B ﹢ and B ﹣, between C ﹢ and C ﹣ and absorbs list
Member, RC absorptive unit absorbing coil resonance.
Compared with prior art, the beneficial effects of the present invention are：The port of coil selecting unit and transmitting coil connects
Correspond, improve filtration result, electric capacity C10 produces the resonance required for transmitting coil work, and π type filter units filter out secondary
Above harmonic wave, RC absorptive units absorb secondary above harmonic wave, the electromagnetic signal and noise signal of input power unit are pressed down
System, radiation is effectively reduced, other vehicle-mounted electronic equipments will not be formed and disturbed.
Brief description of the drawings
Fig. 1 is the integrated circuit figure of the present invention；
Fig. 2 is the structure chart of transmitting coil in the present invention；
Fig. 3 and Fig. 4 is the partial circuit diagram of the present invention；
Wherein, 1 is full-bridge driver element；2 be coil selecting unit；3 be π type filter units；4 be transmitting coil；5 be input electricity
Source unit；6 be that common-mode signal suppresses unit；7 be DC-DC pressure regulation units.
Embodiment
In order that those skilled in the art is better understood from technical scheme, below in conjunction with the accompanying drawings to the present invention
Technical scheme be further elaborated.
Embodiment one：As shown in Fig. 1 ~ 4, a kind of onboard wireless charging circuit of low interference, input power unit, common mode letter
Number suppress unit, DC-DC pressure regulation unit, full-bridge driver element, coil selecting unit and LC resonant elements, input power unit
Output end connection common mode signal suppresses the input of unit, and common-mode signal suppresses the output end connection DC-DC pressure regulation units of unit
Input, pressure regulation unit output end connection full-bridge driver element input, full-bridge driver element output one end connection
Coil selecting unit, other end connection LC resonant elements.
Full-bridge driver element includes MOS switch pipe Q1, Q2, Q6 and Q7, and Q1 connects DC-DC pressure regulation units with Q2 input
Output end, Q1 output end connection Q6 input, Q2 output end connection Q7 input, Q6 and Q7 output termination
Ground；LC resonant elements include electric capacity C10 and transmitting coil, A ﹢, the B ﹢ of electric capacity C10 output end connection transmitting coil and C ﹢ ends
Mouthful；Coil selecting unit includes MOS switch pipe Q3, Q4 and Q5, Q3, Q4 and Q5 output end connect respectively A ﹣ of transmitting coil,
B ﹣ and C ﹣ ports；Q1 output end connection electric capacity C10 input, Q2 output end connection Q3, Q4 and Q5 input.Electric capacity
C10 produces resonance and worked for transmitting coil, and the port connection of coil selecting unit and transmitting coil must correspond, and improve filter
Except effect.
Embodiment two：On the basis of embodiment one, MOS switch pipe Q1, Q2, Q6 and Q7 are parallel with RC absorptive units,
Second harmonic is absorbed, effectively reduces radiation.
Embodiment three：On the basis of embodiment one, the output end of full-bridge driver element is also associated with π type filter units, π
Type filter unit includes inductance L1, L2 and electric capacity C4, Q2 output end connection inductance L1 input, Q1 output end connection electricity
Feel L2 input, the input of inductance L1 output end connection coil selecting unit, inductance L2 output end connection electric capacity C10
Input.
The output end of π type filter units is also parallel with RC absorptive units, absorbs secondary above harmonic wave, reduces radiation.
Example IV：On the basis of embodiment two, between A ﹢ and the A ﹣ of transmitting coil, between B ﹢ and B ﹣, C ﹢ and C ﹣ it
Between be parallel with RC absorptive units, RC absorptive unit absorbing coil resonance, reduce radiation.
The present invention filters out by increasing π types filter unit and RC absorptive units and absorbs secondary above harmonic wave, realize to electricity
Electromagnetic signal and noise signal in road are suppressed, effectively reduce radiation, other vehicle-mounted electronic equipments will not be formed and disturbed
Effect.
Embodiments of the present invention are explained in detail above in conjunction with accompanying drawing, but the present invention is not limited to above-mentioned implementation
Mode, can also be on the premise of present inventive concept not be departed from those of ordinary skill in the art's possessed knowledge
Various changes can be made.
Claims (9)
1. a kind of onboard wireless charging circuit of low interference, including input power unit（5）, common-mode signal suppress unit（6）With
DC-DC pressure regulation units（7）, the input power unit（5）Connection common mode signal suppresses unit（6）, the common-mode signal suppression
Unit（6）Connect DC-DC pressure regulation units（7）, it is characterised in that：Also include full-bridge driver element（1）, coil selecting unit（2）
With LC resonant elements, the DC-DC pressure regulation unit（7）Output end connection full-bridge driver element（1）Input, the full-bridge
Driver element（1）Output one end connection coil selecting unit（2）, other end connection LC resonant elements.
2. the onboard wireless charging circuit of low interference according to claim 1, it is characterised in that：The full-bridge driver element
（1）Including MOS switch pipe Q1, Q2, Q6 and Q7, the Q1 connects the output end of DC-DC pressure regulation units with Q2 input, described
Q1 output end connection Q6 input, the output end connection Q7 of Q2 input, the output head grounding of the Q6 and Q7.
3. the onboard wireless charging circuit of low interference according to claim 2, it is characterised in that：The MOS switch pipe Q1,
Q2, Q6 and Q7 are parallel with RC absorptive units.
4. the onboard wireless charging circuit of low interference according to claim 2, it is characterised in that：The full-bridge driver element
（1）Output end be also associated with π type filter units（3）.
5. the onboard wireless charging circuit of low interference according to claim 4, it is characterised in that：The π types filter unit
（3）Output end be also parallel with RC absorptive units.
6. the onboard wireless charging circuit of low interference according to claim 4, it is characterised in that：The π types filter unit
（3）Output one end connection coil selecting unit（2）, other end connection LC resonant elements.
7. the onboard wireless charging circuit of the low interference according to any one of claim 1 ~ 6, it is characterised in that：The LC is humorous
The unit that shakes includes electric capacity C10 and transmitting coil（4）, the output end connection transmitting coil of the electric capacity C10（4）A ﹢, B ﹢ and C ﹢
Port.
8. the onboard wireless charging circuit of low interference according to claim 7, it is characterised in that：The coil selecting unit
（2）Including MOS switch pipe Q3, Q4 and Q5, described Q3, Q4 and Q5 output end connect transmitting coil respectively（4）A ﹣, B ﹣ and C ﹣
Port.
9. the onboard wireless charging circuit of low interference according to claim 8, it is characterised in that：The transmitting coil（4）
A ﹢ and A ﹣ between, between B ﹢ and B ﹣, between C ﹢ and C ﹣ be parallel with RC absorptive units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710638697.9A CN107508386A (en) | 2017-07-31 | 2017-07-31 | A kind of onboard wireless charging circuit of low interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710638697.9A CN107508386A (en) | 2017-07-31 | 2017-07-31 | A kind of onboard wireless charging circuit of low interference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107508386A true CN107508386A (en) | 2017-12-22 |
Family
ID=60689914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710638697.9A Pending CN107508386A (en) | 2017-07-31 | 2017-07-31 | A kind of onboard wireless charging circuit of low interference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107508386A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101971452A (en) * | 2008-03-13 | 2011-02-09 | 捷通国际有限公司 | Inductive power supply system with multiple coil primary |
| CN105186718A (en) * | 2015-10-22 | 2015-12-23 | 重庆大学 | Composite resonant ECPT system and parameter design method thereof |
| CN204992720U (en) * | 2015-07-07 | 2016-01-20 | 昆明理工大学 | Wireless charging device |
| CN105305651A (en) * | 2014-07-22 | 2016-02-03 | 丰田自动车株式会社 | Electric power transmission device, and electric power reception device and vehicle including the same |
| CN106374635A (en) * | 2016-10-12 | 2017-02-01 | 许继电源有限公司 | Mobile wireless charging emission transmission circuit of electric vehicle |
| CN106505858A (en) * | 2016-10-19 | 2017-03-15 | 南京航空航天大学 | A kind of tetra- phase full-bridge converters of ZVS and its phase-shifting control method |
| CN106797143A (en) * | 2014-09-02 | 2017-05-31 | 三菱电机工程技术株式会社 | Resonance coupled mode electrical power transmission system, mode of resonance electric power dispensing device and mode of resonance power receiving system |
-
2017
- 2017-07-31 CN CN201710638697.9A patent/CN107508386A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101971452A (en) * | 2008-03-13 | 2011-02-09 | 捷通国际有限公司 | Inductive power supply system with multiple coil primary |
| CN105305651A (en) * | 2014-07-22 | 2016-02-03 | 丰田自动车株式会社 | Electric power transmission device, and electric power reception device and vehicle including the same |
| CN106797143A (en) * | 2014-09-02 | 2017-05-31 | 三菱电机工程技术株式会社 | Resonance coupled mode electrical power transmission system, mode of resonance electric power dispensing device and mode of resonance power receiving system |
| CN204992720U (en) * | 2015-07-07 | 2016-01-20 | 昆明理工大学 | Wireless charging device |
| CN105186718A (en) * | 2015-10-22 | 2015-12-23 | 重庆大学 | Composite resonant ECPT system and parameter design method thereof |
| CN106374635A (en) * | 2016-10-12 | 2017-02-01 | 许继电源有限公司 | Mobile wireless charging emission transmission circuit of electric vehicle |
| CN106505858A (en) * | 2016-10-19 | 2017-03-15 | 南京航空航天大学 | A kind of tetra- phase full-bridge converters of ZVS and its phase-shifting control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10366826B2 (en) | Dual-mode choke coil and high-frequency filter using same, and on-board motor integrated electric power steering and on-board charging device | |
| WO2014115773A1 (en) | Noise-reducing shielded cable | |
| US9610847B2 (en) | Power conversion device | |
| KR20100075314A (en) | Noise filter and motor controlling apparatus with the same | |
| US9197290B2 (en) | Communication system and communication device | |
| JP2016516318A (en) | Device and method for filtering electromagnetic interference | |
| WO2016180019A1 (en) | Auxiliary converter and vehicle | |
| JP6047907B2 (en) | Communication apparatus and communication system | |
| EP2724894A1 (en) | Communication system and communication device | |
| CN107134916B (en) | Device and method for preventing electromagnetic information leakage in alternating-current power supply transmission | |
| CN106657715B (en) | Vehicle-mounted analog video signal anti-interference system | |
| KR101861374B1 (en) | High voltage connector of inverter for vehicle | |
| CN203554278U (en) | A household electrical appliance and an EMI filter circuit thereof | |
| JP6835082B2 (en) | Power converter | |
| WO2023246481A1 (en) | Driving circuit having emi suppression and vehicle motor driving system | |
| CN107508386A (en) | A kind of onboard wireless charging circuit of low interference | |
| CN212992292U (en) | Filter circuit for high-voltage direct current input | |
| CN107681884A (en) | A kind of automobile air conditioner compressor and automobile | |
| CN216721289U (en) | Motor EMC filter circuit, filter structure, motor and vehicle | |
| CN206765820U (en) | A kind of filter circuit and new energy electric motor vehicle electric-control system | |
| CN219554823U (en) | Electromagnetic interference filtering device, motor control device and automobile | |
| JP2006041652A (en) | High frequency magnetic field generator | |
| CN219322277U (en) | Electromagnetic compatibility filter and inverter for vehicle-mounted direct current bus | |
| CN210793105U (en) | High electromagnetic compatibility commercial car wiper motor | |
| CN212137624U (en) | CAN communication filter circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171222 |