CN106712231A - Wireless charging system for lithium battery - Google Patents
Wireless charging system for lithium battery Download PDFInfo
- Publication number
- CN106712231A CN106712231A CN201611177397.7A CN201611177397A CN106712231A CN 106712231 A CN106712231 A CN 106712231A CN 201611177397 A CN201611177397 A CN 201611177397A CN 106712231 A CN106712231 A CN 106712231A
- Authority
- CN
- China
- Prior art keywords
- circuit
- lithium battery
- wireless charging
- charging system
- coil
- 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
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 23
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000005299 abrasion Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H02J7/025—
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a wireless charging system for a lithium battery. The wireless charging system comprises a transmitting unit and a receiving unit, wherein the transmitting unit comprises electric supply, an oscillating circuit, a power amplifier circuit and a transmitting coil; the receiving unit comprises a receiving coil, a conversion circuit, a charging circuit and the lithium battery; the oscillating circuit of the transmitting unit is used for converting AC provided by the electric supply into DC; the power amplifier circuit is used for amplifying signal power; the receiving coil is used for receiving a magnetic field generated by the transmitting coil and converting a magnetic field signal into an AC signal through the conversion circuit; and an output circuit is used for providing the lithium battery with charging current. According to the wireless charging system, reliable contact between a charging device and an electronic product and abrasion caused by the reliable contact in a wired charging mode are avoided; the charging security and reliability are improved; reliable contact between the charging device and the electronic product is not needed; and the freely placed electronic product can be reliably charged within a relatively large range.
Description
Technical field
The invention belongs to technical field of lithium batteries, and in particular to a kind of lithium battery wireless charging system.
Background technology
The development of the production and application of electric energy and mankind nowadays society is closely bound up, have become people's production and living can not or
Scarce form of energy.With developing rapidly for Power Electronic Technique, the conveying of electric energy, distribution and using also there is day crescent
Different change, but in general, worldwide, the conveying of electric energy is still using this tradition of the electrical connection of wire conduction
Transmission Mode.In recent years, more next more electronic products have come into our life, with the popularization of smart mobile phone, phase
The electric energy supply of pass, i.e. charging problems all connect socket to carry out by wire and plug.Complicated electric wire both influenceed
The flexibility of electrical equipment movement, destroys the attractive in appearance of environment again.Because electronic product power consumption increases severely outside the market demand brought,
Existing electronic product generally has an one-to-one charger therewith, thus brings significant wastage and the consumption of resource；
And the charger between different electronic products general also can not can bring extra trouble to user.Based on said circumstances, spirit
The application of living, safe and convenient wireless power transmission technology more seems urgent and critical.
The content of the invention
The technical problems to be solved by the invention are to realize a kind of flexible, safe and convenient wireless charging system, and purpose exists
In a kind of lithium battery wireless charging system of offer.
The present invention is achieved through the following technical solutions：
A kind of lithium battery wireless charging system, including transmitter unit and receiving unit；The transmitter unit includes civil power, shakes
Swing circuit, power amplifier, transmitting coil；The receiving unit includes receiving coil, change-over circuit, charging circuit, lithium battery；
Wherein, it is described after the alternating current that civil power is provided is converted to DC current by the oscillating circuit of the transmitter unit
Power amplifier is amplified signal power, and the receiving coil receives the magnetic field produced by transmitting coil, will by change-over circuit
After magnetic field signal is changed into AC signal, output circuit provides charging current to lithium battery.
Further, the oscillating circuit includes transformer, rectification circuit, voltage-stablizer；
The transformer is used to be depressured the voltage of civil power；
The rectification circuit is used to be converted into direct current energy to the AC energy after step-down；
The voltage-stablizer is used to export stable voltage to power amplifier.
Further, the power amplifier is amplifying circuit, for exporting big signal power to transmitting coil.
Further, the transmitting coil and transmitting coil are SMD coupling coil.
Further, the SMD coupling coil is circular or square.
Further, the change-over circuit is rectification circuit, is used to the power rectifier received to the receiving coil.
The present invention compared with prior art, has the following advantages and advantages：
1st, present invention, avoiding in wired charging modes between charging device and electronic product necessary reliable contacts and by
This abrasion for causing, improves security, the reliability of charging；
2nd, the present invention interior in a big way between charging device and electronic product without, without reliable contacts, can arbitrarily put
Putting electronic product still can reliably charge.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is present system structural representation；
Fig. 2 is oscillating circuit structural representation of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention become more apparent, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
It is limitation of the invention.
To realize a kind of flexible, safe and convenient wireless charging system, the invention provides a kind of lithium battery wireless charging
System.As shown in figure 1, the system includes transmitter unit and receiving unit；The transmitter unit includes civil power, oscillating circuit, work(
Electric discharge road, transmitting coil；The receiving unit includes receiving coil, change-over circuit, charging circuit, lithium battery；
Wherein, it is described after the alternating current that civil power is provided is converted to DC current by the oscillating circuit of the transmitter unit
Power amplifier is amplified signal power, and the receiving coil receives the magnetic field produced by transmitting coil, will by change-over circuit
After magnetic field signal is changed into AC signal, output circuit provides charging current to lithium battery.Change-over circuit is rectification circuit, is used to
The power rectifier received to the receiving coil.
Lithium battery needs the work of normal table, it is necessary to the use of suitable direct current be its power supply in charging process, because
This is necessary to be converted to the civil power in transmitter unit in corresponding powered by direct current circuit.It is direct current by AC conversion,
Need through over commutation, filtering, and be contemplated that stability problem, therefore also needed to suitable transformation and mu balanced circuit.
Therefore, oscillating circuit includes transformer, rectification circuit, voltage-stablizer.Transformer is used to be depressured the voltage of civil power；Rectified current
Road is used to be converted into direct current energy to the AC energy after step-down；Voltage-stablizer is used to export stable voltage to power amplifier.Work(
Electric discharge road is amplifying circuit, for exporting big signal power to transmitting coil.
In view of the particularity of wireless charging, coupling coil will be integrated into the inside of electronic product, and this is accomplished by coupling
The size of coil is limited.Meanwhile, in order to increase the change of magnetic flux so that more energy can be coupled to receiving coil
In, the system capacity efficiency of transmission area of spread loop as far as possible again is improved, therefore transmitting coil and transmitting coil are paster
Formula coupling coil, reduces the thickness of coil, and using circular or square, area coil is ensure that as far as possible as far as possible.
Above-described specific embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, should be understood that and the foregoing is only specific embodiment of the invention, be not intended to limit the present invention
Protection domain, all any modification, equivalent substitution and improvements within the spirit and principles in the present invention, done etc. all should include
Within protection scope of the present invention.
Claims (6)
1. a kind of lithium battery wireless charging system, it is characterised in that：Including transmitter unit and receiving unit；The transmitter unit bag
Include civil power, oscillating circuit, power amplifier, transmitting coil；The receiving unit include receiving coil, change-over circuit, charging circuit,
Lithium battery；
Wherein, after the alternating current that civil power is provided is converted to DC current by the oscillating circuit of the transmitter unit, the power amplifier
Circuit is amplified signal power, and the receiving coil receives the magnetic field produced by transmitting coil, by change-over circuit by magnetic field
After signal is changed into AC signal, output circuit provides charging current to lithium battery.
2. a kind of lithium battery wireless charging system according to claim 1, it is characterised in that：The oscillating circuit includes becoming
Depressor, rectification circuit, voltage-stablizer；
The transformer is used to be depressured the voltage of civil power；
The rectification circuit is used to be converted into direct current energy to the AC energy after step-down；
The voltage-stablizer is used to export stable voltage to power amplifier.
3. a kind of lithium battery wireless charging system according to claim 1 and 2, it is characterised in that：The power amplifier is
Amplifying circuit, for exporting big signal power to transmitting coil.
4. a kind of lithium battery wireless charging system according to claim 1, it is characterised in that：The transmitting coil and transmitting
Coil is SMD coupling coil.
5. a kind of lithium battery wireless charging system according to claim 4, it is characterised in that：The SMD coupling coil
For circular or square.
6. a kind of lithium battery wireless charging system according to claim 1, it is characterised in that：The change-over circuit is rectification
Circuit, is used to the power rectifier received to the receiving coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611177397.7A CN106712231A (en) | 2016-12-19 | 2016-12-19 | Wireless charging system for lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611177397.7A CN106712231A (en) | 2016-12-19 | 2016-12-19 | Wireless charging system for lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106712231A true CN106712231A (en) | 2017-05-24 |
Family
ID=58939142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611177397.7A Pending CN106712231A (en) | 2016-12-19 | 2016-12-19 | Wireless charging system for lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106712231A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108058947A (en) * | 2018-01-09 | 2018-05-22 | 惠科股份有限公司 | A kind of storage facilities and warehousing system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471056A (en) * | 2016-01-04 | 2016-04-06 | 南京铁道职业技术学院 | Wireless charging apparatus and method for wireless microphone |
-
2016
- 2016-12-19 CN CN201611177397.7A patent/CN106712231A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471056A (en) * | 2016-01-04 | 2016-04-06 | 南京铁道职业技术学院 | Wireless charging apparatus and method for wireless microphone |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108058947A (en) * | 2018-01-09 | 2018-05-22 | 惠科股份有限公司 | A kind of storage facilities and warehousing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |
|
| RJ01 | Rejection of invention patent application after publication |