CN108539820A - A kind of charging system based on wireless charging - Google Patents
A kind of charging system based on wireless charging Download PDFInfo
- Publication number
- CN108539820A CN108539820A CN201810384798.2A CN201810384798A CN108539820A CN 108539820 A CN108539820 A CN 108539820A CN 201810384798 A CN201810384798 A CN 201810384798A CN 108539820 A CN108539820 A CN 108539820A
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- inductance
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- charging
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- 238000004891 communication Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 abstract description 10
- 238000010168 coupling process Methods 0.000 abstract description 10
- 238000005859 coupling reaction Methods 0.000 abstract description 10
- 230000009467 reduction Effects 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- H02J7/025—
-
- H02J5/005—
-
- 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
- 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
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a kind of charging systems based on wireless charging, including radiating circuit, N grades of termination powers and receiving circuit, the electric current and voltage stress on power device can not only be reduced by using multistage resonant termination power, extend the service life of device, idle work that can also be in reduction system, to improve whole system efficiency, increase the moving range of receiving terminal, use multiple resonant coupling circuit, 25% 30% will be reduced by realizing specific energy loss, for improving vehicle-mounted energy consumption, the service life for extending battery plays good result.
Description
Technical field
The present invention relates to field of circuit technology more particularly to a kind of charging systems based on wireless charging.
Background technology
Wireless charging technology is to compare one of the new technology of mainstream in recent years, this is a kind of completely new charging modes, is broken through
The mode of traditional wire charging, can make charging more flexibly, convenient and safety.This new charging modes have wide
Development and application prospect, received the highest attention of related research institutes and enterprise at present.It is vehicle-mounted compared to traditional
Charging, onboard wireless charging is even better on convenience, the step of getting on the bus plug the end of a thread is eliminated, in conjunction with handset bracket work(
It can so that driver charges the phone, checks mobile phone halfway etc. more convenient.But since wireless charger is that have energy loss
, that is to say, that the input voltage and input current of wireless charger can be larger, and output voltage electric current can be less than input voltage electricity
Stream.In addition, wireless charger fever seriously also reduces the desire that user uses with the slow disadvantage that charges.
Invention content
An embodiment of the present invention provides a kind of charging systems based on wireless charging, to solve existing wireless charger energy
The problem of generating heat when amount loss is high, conversion ratio is low, charging is slow and charging.
An embodiment of the present invention provides a kind of charging system based on wireless charging, the system comprises radiating circuit, N grades
Termination power and receiving circuit；
The radiating circuit establishes wireless communication connection, the N grades of termination power with N grades of termination powers in certain distance
Wireless communication connection is established in certain distance with the receiving circuit；
N grades of termination powers are by the energy transmission of radiating circuit to receiving circuit, wherein N is the positive integer more than or equal to 1.
Further, as an executable scheme, the radiating circuit includes power supply U, capacitance C1 and inductance L1, described
It connects between power supply U, capacitance C1 and inductance L1.
Further, as an executable scheme, as N=2, the N grades of termination power includes first order coupling electricity
Road and second level termination power, the first order termination power and second level termination power establish wireless communication in certain distance
Connection.
Further, as an executable scheme, the first order termination power includes inductance L2, inductance L3, inductance
L4 and capacitance C2 is series connection between the inductance L2, inductance L3, inductance L4 and capacitance C2, and inductance L2 is coupled with inductance L1；
The second level termination power include inductance L5, inductance L6, inductance L7 and capacitance C3, the inductance L5, inductance L6,
It is series connection between inductance L7 and capacitance C3, and inductance L5 and inductance L6 are coupled with inductance L3 and inductance L4 respectively.
Further, as an executable scheme, the receiving circuit include inductance L8, capacitance C4 and load battery,
It is series connection between the inductance L8, capacitance C4 and load battery, the inductance L8 is coupled with inductance L7.
Further, as an executable scheme, the circuit transmission power bracket is 112KHZ~205KHZ.
The present invention has the beneficial effect that：
An embodiment of the present invention provides a kind of charging systems based on wireless charging, including radiating circuit, N grade termination power
And receiving circuit, it can not only reduce electric current and voltage stress on power device by using multistage resonant termination power, extend
The service life of device, idle work that can also be in reduction system increase the movement of receiving terminal to improve whole system efficiency
Range, using multiple resonant coupling circuit, 25%-30% will be reduced by realizing specific energy loss, be disappeared for improving vehicle-mounted energy
Consumption, the service life for extending battery play good result.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 show the structural schematic diagram of the charging system based on wireless charging described in the embodiment of the present invention.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
It is described in detail to one step, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
All other embodiment, shall fall within the protection scope of the present invention.
An embodiment of the present invention provides a kind of charging systems based on wireless charging, as shown in Figure 1, it is implemented for the present invention
The structural schematic diagram of the charging system based on wireless charging described in example, the system road include radiating circuit 11, N grades of coupling electricity
Road 12 and receiving circuit 13；
The radiating circuit 11 establishes wireless communication connection, the N grades of coupling with N grades of termination powers 12 in certain distance
Circuit 12 establishes wireless communication connection with the receiving circuit 13 in certain distance；
N grades of termination powers 12 are by the energy transmission of radiating circuit 11 to receiving circuit 13, wherein N is just more than or equal to 1
Integer.
When the distance between transmitting terminal and receiving terminal increase, the magnetic circuit leakage inductance increase between two coils, the coefficient of coup
It is lower, the efficiency of transmission of wireless charging system is made to reduce.The multistage resonant termination power of use can reduce the electricity on power device
Stream and voltage stress, to the service life during extending, idle work that can also be in reduction system, to improve whole system
Efficiency increases the moving range of receiving terminal.In addition repeatedly coupling also has more advantage than single coupling.
Specifically, in an example, the radiating circuit includes power supply U, capacitance C1 and inductance L1, the power supply U, electricity
It connects between appearance C1 and inductance L1.
Further, in an example, as N=2, the N grades of termination power includes first order termination power and
Two level termination power, the first order termination power and second level termination power establish wireless communication connection in certain distance.
Specifically, the first order termination power include inductance L2, inductance L3, inductance L4 and capacitance C2, the inductance L2,
It is series connection between inductance L3, inductance L4 and capacitance C2, and inductance L2 is coupled with inductance L1；
The second level termination power include inductance L5, inductance L6, inductance L7 and capacitance C3, the inductance L5, inductance L6,
It is series connection between inductance L7 and capacitance C3, and inductance L5 and inductance L6 are coupled with inductance L3 and inductance L4 respectively.
It should be noted that in the embodiment of the present invention, illustrated by taking N=2 as an example as shown in Fig. 1, certain single-stage
Termination power can also realize the technical problems to be solved by the invention, and circuit structure is similar, and the embodiment of the present invention is not done superfluous herein
It states.
Further, the receiving circuit include inductance L8, capacitance C4 and load battery, the inductance L8, capacitance C4 and
It is series connection between load battery, the inductance L8 is coupled with inductance L7.
The operation principle of circuit described in the embodiment of the present invention is as follows：
After power supply U is connected with capacitance C1 and inductance L1, inductance L1 is coupled with inductance L2, and the energy of power supply U is passed through
C2 storage energies are output to inductance L2, inductance L3 and inductance L4 and are further continued for coupling with concatenated inductance L5 and inductance L6, by power supply U
Energy be output to inductance L7 by C3 storage energies, transmit energy to output after repeatedly coupling, then by capacitance C4
On end load battery.The resonant frequency of system be 100KHz, in charging process, working efficiency generally can reach 112KHz~
Between 205KHz.
Circuit structure when in an example, with above-mentioned N=2 illustrates the present invention and respectively joins in the charging system
Number setting, specifically can be as shown below：
Impedance Z=30Ohm of U；
C1=0.8pF；
L1=1nH；
C2=18pF；
L2=1nH；
L3=1nH；
L4=0.1nH；
L5=1nH；
L6=0.1nH；
C3=18pF；
L7=1nH；
L8=1nH；
C4=0.8pF；
Load battery impedance Z=20Ohm；
Between L1 and L2, between L3 and L5, between L4 and L6, the coefficient of coup is K=0.4, mutual inductance system between L7 and L8
Number is M=0.0935.
By power supply power supply frequency from 1MHZ~10MHZ, circuit of the present invention is tested, in charging process, work
Make efficiency generally between 112KHz to 205KHz, greatly improves the utilization rate of energy.
An embodiment of the present invention provides a kind of charging systems based on wireless charging, including radiating circuit, N grade termination power
And receiving circuit, it can not only reduce electric current and voltage stress on power device by using resonance circuit, extend making for device
With the service life, idle work that can also be in reduction system increases the moving range of receiving terminal, makes to improve whole system efficiency
With multiple resonant coupling circuit, 25%-30% will be reduced by realizing specific energy loss, for improving vehicle-mounted energy consumption, be extended
The service life of battery plays good result.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (6)
1. a kind of charging system based on wireless charging, which is characterized in that the system comprises radiating circuit, N grades of termination powers
And receiving circuit；
The radiating circuit establishes wireless communication connection, the N grades of termination power and institute with N grades of termination powers in certain distance
It states receiving circuit and establishes wireless communication connection in certain distance；
N grades of termination powers are by the energy transmission of radiating circuit to receiving circuit, wherein N is the positive integer more than or equal to 1.
2. charging system as described in claim 1, which is characterized in that the radiating circuit includes power supply U, capacitance C1 and inductance
L1 connects between the power supply U, capacitance C1 and inductance L1.
3. charging system as claimed in claim 2, which is characterized in that as N=2, the N grades of termination power includes the first order
Termination power and second level termination power, the first order termination power and second level termination power establish nothing in certain distance
Line communicates to connect.
4. charging system as claimed in claim 3, which is characterized in that
The first order termination power includes inductance L2, inductance L3, inductance L4 and capacitance C2, the inductance L2, inductance L3, inductance
It is series connection between L4 and capacitance C2, and inductance L2 is coupled with inductance L1；
The second level termination power includes inductance L5, inductance L6, inductance L7 and capacitance C3, the inductance L5, inductance L6, inductance
It is series connection between L7 and capacitance C3, and inductance L5 and inductance L6 are coupled with inductance L3 and inductance L4 respectively.
5. charging system as claimed in claim 4, which is characterized in that the receiving circuit includes inductance L8, capacitance C4 and bears
Battery is carried, is series connection between the inductance L8, capacitance C4 and load battery, the inductance L8 is coupled with inductance L7.
6. charging system as described in claim 1, which is characterized in that the circuit transmission power bracket be 112KHZ~
205KHZ。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810384798.2A CN108539820B (en) | 2018-04-26 | 2018-04-26 | Charging system based on wireless charging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810384798.2A CN108539820B (en) | 2018-04-26 | 2018-04-26 | Charging system based on wireless charging |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108539820A true CN108539820A (en) | 2018-09-14 |
| CN108539820B CN108539820B (en) | 2021-01-26 |
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| CN201810384798.2A Active CN108539820B (en) | 2018-04-26 | 2018-04-26 | Charging system based on wireless charging |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210328461A1 (en) * | 2020-04-21 | 2021-10-21 | Hyundai Motor Company | Wireless charger |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20210328461A1 (en) * | 2020-04-21 | 2021-10-21 | Hyundai Motor Company | Wireless charger |
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| Publication number | Publication date |
|---|---|
| CN108539820B (en) | 2021-01-26 |
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Effective date of registration: 20231102 Address after: 518000 101 (A1 Industrial Park), A1 workshop, No.7 Shankeng Road, Shanxia community, Pinghu street, Longgang District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Jinxiang Technology Co.,Ltd. Address before: 230000 floor 1, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee before: Dragon totem Technology (Hefei) Co.,Ltd. Effective date of registration: 20231102 Address after: 230000 floor 1, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee after: Dragon totem Technology (Hefei) Co.,Ltd. Address before: 330000 Shuanggang Road, suburb of Nanchang City, Jiangxi Province Patentee before: East China Jiaotong University |