CN102983613A - Wireless charging device - Google Patents
Wireless charging device Download PDFInfo
- Publication number
- CN102983613A CN102983613A CN2012105030485A CN201210503048A CN102983613A CN 102983613 A CN102983613 A CN 102983613A CN 2012105030485 A CN2012105030485 A CN 2012105030485A CN 201210503048 A CN201210503048 A CN 201210503048A CN 102983613 A CN102983613 A CN 102983613A
- Authority
- CN
- China
- Prior art keywords
- winding
- wireless charging
- charging device
- secondary winding
- armature winding
- 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
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to the technical field of chargers, and discloses a wireless charging device. The wireless charging device specifically comprises a first rectifier circuit, an inverter circuit and a primary winding arranged on a wireless charger, as well as a primary winding, a second rectifier circuit and a rechargeable battery which are arranged on an electronic product, wherein an output terminal of the first rectifier circuit is connected with an input terminal of the inverter circuit; an output terminal of the inverter circuit is connected with the primary winding; the primary winding is coupled with the secondary winding; the primary winding adopts a spiral winding structure and the secondary winding adopts a circular spiral winding structure; and an output terminal of the secondary winding is connected with the second rectifier circuit which is connected with the rechargeable battery. The wireless charging device disclosed by the invention has the advantages that through arranging the secondary winding as the circular spiral structure, a very good charging effect can be achieved without regulating a placed angle of the electronic product.
Description
Technical field
The present invention relates to the charger technical field, relate in particular to a kind of wireless charging device.
Background technology
Along with socioeconomic development, the electronic product that people carry is more and more, and these Portable movable electronic products such as mobile phone, digital camera etc. also increase along with function increases its power consumption thereupon greatly, a lot of smart mobile phones have not just had electricity less than one day time, in the prior art, the general electric wire that adopts connects power supply and electronic product, is used for carrying out wired charging to electronic product.
Wireless charging is generally used for charging to electronic products such as smart mobile phone or digital cameras because its convenience is then more very popular.The wireless charging technology is fully not by electric wire, utilizes magnet to be the technology of equipment charge.The wireless charging technology comes from the wireless power conveying technology, utilizes magnetic field to adopt air to carry out the electric charge transmission between charger and electronic product, realizes wireless power transmission.Although the technical spirit of wireless charging is come electric energy transmitting by magnetic field exactly, this just can realize that before for a long time the efficient of wireless charging is the bottleneck of restriction wireless charging technical development always.
Wireless charging device of the prior art, the general placed angle that all needs to adjust electronic equipment so that the armature winding of charger can align in the secondary winding on the electronic equipment and the wireless charging device, thereby improves the efficient of charging.Yet, when each electronic equipment to same model or different model charges, if make charge efficiency reach maximum, the user must pay the placed angle that electronic equipment is adjusted in larger patience, thereby cause the user to waste the more time, on the contrary so that the user be inconvenient to use.An elastic component and a plurality of maintenance winding perhaps are set, by adjusting the size that respectively keeps winding current, adjust the attraction that keeps winding and electronic equipment, thereby automatically adjust the charging angle of electronic equipment.That is to say, manually adjust or automatically adjust no matter be, prior art is all thought needs to adjust the placed angle of armature winding and secondary winding, so that the secondary winding on the electronic equipment and the armature winding on the wireless charging can align, manual mode is beyond doubt so that the user is very inconvenient, but above-mentioned automatic mode need to increase elastic component equally, keep winding, induction module, judge module, memory module etc. could realize automatic aligning, and such mode has also increased production cost undoubtedly obviously.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind of low cost, high efficiency wireless charging device.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of wireless charging device, specifically comprise the first rectification circuit that is arranged on the wireless charger, inverter circuit, one armature winding, and be arranged on a level winding on the electronic product, the second rectification circuit, rechargeable battery, the output of described the first rectification circuit connects the input of inverter circuit, the output of described inverter circuit connects armature winding, described armature winding and the coupling of described secondary winding, described armature winding adopts the spiral winding construction, described secondary winding adopts the round screw thread winding construction, the output of described secondary winding connects the second rectification circuit, and described the second rectification circuit connects rechargeable battery.
Further, above-mentioned armature winding and secondary winding are respectively two-layer pcb board, and two pcb boards are respectively as armature winding and the secondary winding of transformer, and the upper strata of each pcb board arranges the round screw thread winding, realize two round screw thread winding coupled, lower floor is as layer line.
Further, the resonance frequency of above-mentioned inverter circuit is 1MHz to 6Mhz.
Further, above-mentioned armature winding adopts four layers of pcb board, above three layers be hexagon spiral winding, above three layers hexagon spiral winding interlaced arrangement, the spiral winding group switching centre of top one deck just in time is arranged on one of them angle of following one deck hexagon spiral winding, and bottom one deck is as each layer line; Secondary winding is two-layer pcb board, and the upper strata is the round screw thread winding, and lower floor is as layer line.
Further, above-mentioned rechargeable battery is lithium battery.
Further, above-mentioned wireless charging device also comprises the magnetic force induction device, and described magnetic force induction device judges whether electronic product is charged according to magnetic field intensity for detection of the magnetic field intensity that armature winding produces at the electronic product place.
After adopting technique scheme, the invention has the beneficial effects as follows: be set to the round screw thread structure by the secondary winding on the electronic equipment, armature winding and secondary winding all can directly be coupled under any angle, the electric current of secondary ports output is high-frequency ac current, be transformed into direct current through rectification circuit again, charge to rechargeable battery.Wireless charging device of the present invention is set to the round screw thread structure by secondary winding.The placed angle that does not need to adjust electronic product just can reach good charging effect.
Description of drawings
Fig. 1 is the structural representation of wireless charging device of the present invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
The structural representation of wireless charging device of the present invention as shown in Figure 1.The invention discloses a kind of wireless charging device, it comprises the first rectification circuit that is arranged on the wireless charger, inverter circuit, one armature winding, and be arranged on a level winding on the electronic product, the second rectification circuit, rechargeable battery, the output of described the first rectification circuit connects the input of inverter circuit, the output of described inverter circuit connects armature winding, described armature winding and the coupling of described secondary winding, described armature winding adopts the spiral winding construction, described secondary winding adopts the round screw thread winding construction, the output of described secondary winding connects the second rectification circuit, and described the second rectification circuit connects rechargeable battery.Input is transformed into direct current with the power frequency civil power through rectification circuit, then convert high-frequency alternating current to through inverter circuit and supply with armature winding, be set to the round screw thread structure by the secondary winding on the electronic equipment, armature winding and secondary winding all can directly be coupled under any angle, the electric current of secondary ports output is high-frequency ac current, be transformed into direct current through rectification circuit again, charge to rechargeable battery.Wireless charging device of the present invention is set to the round screw thread structure by secondary winding.The placed angle that does not need to adjust electronic product just can reach good charging effect.
Further, above-mentioned armature winding and secondary winding are respectively two-layer pcb board, and two pcb boards are respectively as armature winding and the secondary winding of transformer, and the upper strata of each pcb board arranges the round screw thread winding, realize two round screw thread winding coupled, lower floor is as layer line.Armature winding in this scheme all is identical shape and structure with secondary winding, and being the upper strata is the round screw thread winding, and lower floor is layer line, two round screw thread winding direct-couplings.Therefore the magnetomotive force that produces is the highest in the center of circle, very low on every side.Such mode can reach good charging effect, but since inhomogeneous in the magnetomotive force on pcb board surface, therefore be not best coupling scheme.
Further, the resonance frequency of above-mentioned inverter circuit is 1MHz to 6Mhz.Under above-mentioned resonance frequency, can reach better charge efficiency.
Further, above-mentioned armature winding adopts four layers of pcb board, above three layers be hexagon spiral winding, above three layers hexagon spiral winding interlaced arrangement, the spiral winding group switching centre of top one deck just in time is arranged on one of them angle of following one deck hexagon spiral winding, and bottom one deck is as each layer line; Secondary winding is two-layer pcb board, and the upper strata is the round screw thread winding, and lower floor is as layer line.When high-frequency alternating current flows through hexagon spiral winding, its center magnetomotive force is the highest, and six angles are minimum, and the structure of three layers of hexagon spiral winding is all the same, just adopt interlaced arrangement, above the spiral winding group switching centre of one deck just in time be arranged on one of them angle of following one deck hexagon spiral winding.Top like this three layers of interlaced arrangement, just overlapping with a center of the hexagon spiral winding of other one deck at one of them angle of each hexagon spiral winding, therefore, the magnetomotive force that the pcb board surface produces is very even, be placed on any position above the armature winding, can both be coupled, and energy transfer efficiency is also the highest.
Further, above-mentioned rechargeable battery is lithium battery.
The below is from the technique effect of result of the test explanation technique scheme.Two windings are respectively four layers of pcb board and two-layer pcb board, its plan of establishment such as above-mentioned description.Test parameters is: 220V AC power frequency civil power, and the inverter circuit resonant frequency range is controlled at 100Hz-9MHz, and rechargeable battery is lithium battery, and rated power is 3.6W, and rated voltage is 4.2V.Result of the test represents, when inverter circuit resonance frequency during less than 1MHz, efficient rises gradually, and its slope is very large, when frequency during at 1MHz to 6MHz, the curve approximation level, charge efficiency is about about 80%, and therefore as long as the inverter circuit resonance frequency is controlled in the scope of 1MHz to 6Mhz, wireless charging device of the present invention does not need to adjust the angle of electronic product, just can realize higher charge efficiency, and this frequency range realizes comparatively easily also.
Further, above-mentioned wireless charging device also comprises the magnetic force induction device, and described magnetic force induction device judges whether electronic product is charged according to magnetic field intensity for detection of the magnetic field intensity that armature winding produces at the electronic product place.By this technical scheme, when reaching certain value, magnetic field intensity just charges, guaranteed the efficient of charging, the waste of energy of having avoided armature winding to produce.
Further, above-mentioned wireless charging device also comprises Power Management Unit, interface circuit, wired charhing unit, and described wired charhing unit connects Power Management Unit by interface circuit, and described Power Management Unit connects the first rectification circuit.By technique scheme, so that wireless charging device of the present invention both can be realized wireless charging, can also charge by compatible for wired simultaneously, the user can select arbitrarily as required.
Further, above-mentioned wireless charging device also comprises display unit, and described display unit connects secondary winding.Described display unit is used for the process of display radio charging, has made things convenient for user's use.
Above-mentioned explanation illustrates and has described a preferred embodiment of the present invention, but as previously mentioned, be to be understood that the present invention is not limited to the disclosed form of this paper, should not regard the eliminating to other embodiment as, and can be used for various other combinations, modification and environment, and can in invention contemplated scope described herein, change by technology or the knowledge of above-mentioned instruction or association area.And the change that those skilled in the art carry out and variation do not break away from the spirit and scope of the present invention, then all should be in the protection range of claims of the present invention.
Claims (6)
1. wireless charging device, it is characterized in that comprising the first rectification circuit that is arranged on the wireless charger, inverter circuit, one armature winding, and be arranged on a level winding on the electronic product, the second rectification circuit, rechargeable battery, the output of described the first rectification circuit connects the input of inverter circuit, the output of described inverter circuit connects armature winding, described armature winding and the coupling of described secondary winding, described armature winding adopts the spiral winding construction, described secondary winding adopts the round screw thread winding construction, the output of described secondary winding connects the second rectification circuit, and described the second rectification circuit connects rechargeable battery.
2. wireless charging device as claimed in claim 1, it is characterized in that described armature winding and secondary winding are respectively two-layer pcb board, two pcb boards are respectively as armature winding and the secondary winding of transformer, the upper strata of each pcb board arranges the round screw thread winding, realize two round screw thread winding coupled, lower floor is as layer line.
3. wireless charging device as claimed in claim 1, the resonance frequency that it is characterized in that described inverter circuit is 1MHz to 6Mhz.
4. wireless charging device as claimed in claim 1, it is characterized in that described wireless charging device also comprises Power Management Unit, interface circuit, wired charhing unit, described wired charhing unit connects Power Management Unit by interface circuit, and described Power Management Unit connects the first rectification circuit.
5. wireless charging device as claimed in claim 1 is characterized in that described rechargeable battery is lithium battery.
6. wireless charging device as claimed in claim 1, it is characterized in that described wireless charging device also comprises the magnetic force induction device, described magnetic force induction device judges whether electronic product is charged according to magnetic field intensity for detection of the magnetic field intensity that armature winding produces at the electronic product place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105030485A CN102983613A (en) | 2012-11-30 | 2012-11-30 | Wireless charging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105030485A CN102983613A (en) | 2012-11-30 | 2012-11-30 | Wireless charging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102983613A true CN102983613A (en) | 2013-03-20 |
Family
ID=47857427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105030485A Pending CN102983613A (en) | 2012-11-30 | 2012-11-30 | Wireless charging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102983613A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105226835A (en) * | 2015-10-16 | 2016-01-06 | 中国航空工业集团公司北京航空精密机械研究所 | A kind of induction electric energy transmitting device for aeroengine rotor telemetry system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101233666A (en) * | 2005-07-30 | 2008-07-30 | Ls电线有限公司 | Rechargeable power supply, battery device, contact-less charger systems and method for charging rechargeable battery cell |
| CN101707384A (en) * | 2009-11-25 | 2010-05-12 | 中兴通讯股份有限公司 | System and method compatible for wired charging and wireless charging |
| CN101828320A (en) * | 2008-12-12 | 2010-09-08 | 郑春吉 | Contactless charging station equipped with a ptps core having a planar spiral core structure, contactless power receiving apparatus, and method for controlling same |
| CN101950999A (en) * | 2010-09-21 | 2011-01-19 | 宇龙计算机通信科技(深圳)有限公司 | Wireless charging method, wireless charging receiving device and mobile terminal |
| CN101971458A (en) * | 2007-11-09 | 2011-02-09 | 香港城市大学 | Planar battery charging system |
| CN102804541A (en) * | 2009-04-08 | 2012-11-28 | 捷通国际有限公司 | Selectable coil array |
-
2012
- 2012-11-30 CN CN2012105030485A patent/CN102983613A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101233666A (en) * | 2005-07-30 | 2008-07-30 | Ls电线有限公司 | Rechargeable power supply, battery device, contact-less charger systems and method for charging rechargeable battery cell |
| CN101971458A (en) * | 2007-11-09 | 2011-02-09 | 香港城市大学 | Planar battery charging system |
| CN101828320A (en) * | 2008-12-12 | 2010-09-08 | 郑春吉 | Contactless charging station equipped with a ptps core having a planar spiral core structure, contactless power receiving apparatus, and method for controlling same |
| CN102804541A (en) * | 2009-04-08 | 2012-11-28 | 捷通国际有限公司 | Selectable coil array |
| CN101707384A (en) * | 2009-11-25 | 2010-05-12 | 中兴通讯股份有限公司 | System and method compatible for wired charging and wireless charging |
| CN101950999A (en) * | 2010-09-21 | 2011-01-19 | 宇龙计算机通信科技(深圳)有限公司 | Wireless charging method, wireless charging receiving device and mobile terminal |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105226835A (en) * | 2015-10-16 | 2016-01-06 | 中国航空工业集团公司北京航空精密机械研究所 | A kind of induction electric energy transmitting device for aeroengine rotor telemetry system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201656576U (en) | Variable-frequency wireless powering and charging device | |
| CN203660624U (en) | Wireless charging device with multiple transmitting terminals and single receiving terminal | |
| CN203119515U (en) | Portable wireless charger | |
| CN202424281U (en) | Wireless lithium battery charging device | |
| JP2012205499A (en) | Power control method in wireless power transmission assembly and wireless power transmission assembly | |
| CN201536272U (en) | solar wireless charger | |
| CN203761094U (en) | Solar-energy wireless charger | |
| CN102005784A (en) | Wireless charging system | |
| CN104011960A (en) | Electronic apparatus, and power feed system | |
| JP2014212581A (en) | Battery charger and charging stand, and battery charger | |
| CN202309145U (en) | Wireless charging device | |
| KR101251316B1 (en) | Power supply for charging a battery | |
| CN201533185U (en) | Wireless supply unit | |
| KR101712647B1 (en) | Auxiliary battery for wirelessly charging and discharging | |
| CN105119357B (en) | A kind of remote-wireless charging equipment | |
| CN202550639U (en) | Power system with wireless charging function | |
| CN108988500A (en) | Portable radiationless non-plug-in type charging equipment and charging method | |
| CN102709997A (en) | Method for wirelessly transmitting electric energy to charge a plurality of or many kinds of loads | |
| CN103545850A (en) | Electronic device | |
| CN201478413U (en) | Wireless rechargeable battery | |
| CN102983613A (en) | Wireless charging device | |
| CN102983375A (en) | Wireless chargeable lithium battery | |
| CN105024408A (en) | Tandem-type wireless charging system and charging method thereof | |
| CN205829266U (en) | Many mouthfuls of wireless chargers | |
| KR101136917B1 (en) | Wireless charger and charging method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130320 |