CN104868610A - Wireless charging system and method - Google Patents
Wireless charging system and method Download PDFInfo
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- CN104868610A CN104868610A CN201510265378.9A CN201510265378A CN104868610A CN 104868610 A CN104868610 A CN 104868610A CN 201510265378 A CN201510265378 A CN 201510265378A CN 104868610 A CN104868610 A CN 104868610A
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000005070 sampling Methods 0.000 claims abstract description 11
- 238000004891 communication Methods 0.000 claims description 12
- 238000004146 energy storage Methods 0.000 claims description 9
- 230000003750 conditioning effect Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 230000004044 response Effects 0.000 abstract description 2
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
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- H02J7/025—
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- H02J7/027—
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a wireless charging system. The system comprises a wireless charging receiving module. The wireless charging receiving module possesses a MCU and a voltage sampling component. The voltage sampling component carries out sampling on a voltage after rectification and voltage stabilization. When a dynamic load is adjusted, voltage abnormity is fed back to the MCU. The MCU controls an output voltage. The invention also discloses a wireless charging method. Two or more Ping phase frequency points are arranged to carry out work by turns. By using the system and the method, problems that a dynamic load response is abnormal and a wireless charging distance is small, which exist in a current wireless charging system, are solved; a damage of the wireless charging system to receiving end circuit component and an assembling problem of office furniture are avoided.
Description
Technical field
the present invention relates to wireless charging field, specifically a kind of wireless charging system and method.
Background technology
Along with popularizing of wireless charging technology, increasing of consumption electronic product, increasing wireless charger starts to enter office realm.Wireless charging device is combined with office furniture, while convenient charging or power supply can be brought to experience to user, keep the clean and tidy and attractive in appearance of furniture table, these can bring new differentiation point to furniture industry undoubtedly, certainly will promote the benign development of furniture industry.
Wireless charging mainly contains induction type wireless charging and resonant wireless charging, induction type wireless charging comparative maturity, and has had a lot of commercialized product, is exactly typically mobile phone wireless charger miscellaneous.Wireless charging technology office furniture industry also have start application, application model is that wireless charging transmitting terminal is embedded in office furniture, wireless charging receiving terminal combines with office electrical equipment as module, such as wireless charging mobile phone, wireless charging notebook computer, wireless charging desk lamp, wireless charging printer etc.
Existing wireless charging scheme is existing defects in dynamic load adjusts and wireless transmission distance is less, and these hamper the popularization and application of wireless charging technology at office realm.In the wireless charging scheme of the existing Qi of meeting standard, the fastest communication adjustment speed is 2KHz, the adjustment that communication signal completes one-period at least will at 50ms, thus wireless charging technology be applied in dynamic load adjustment than comparatively fast and stricter terminate load time there will be problem.The electronic product of such as notebook computer and so on, dynamic load adjusts about 10ms once, and wireless charging technology is applied on notebook and notebook will be caused not in time not stop to restart problem because of dynamic load adjustment.
In addition, the neat and artistic requirement of office realm to working top is higher, and user is more prone to the concealed mounting means of wireless charger, and namely wireless charger is arranged on below desktop, will certainly increase the operating distance between wireless charger and receiver like this.In view of the existing wireless charging product meeting Qi standard, charger and receiver spacing be general≤5mm, this just requires that the installation of wireless charger needs punching to run through desktop.Therefore, inconvenience is installed, destroys performance and products application popularization that existing desktop hampers wireless charging product advantage.
Summary of the invention
In order to solve the above-mentioned technical problem existed in prior art, the object of the invention is to provide a kind of wireless charging system being applied to office realm, its technical scheme is as follows: a kind of wireless charging system, comprise wireless charging receiver module, described wireless charging receiver module has MCU and voltage sampling element, voltage sampling element is sampled to voltage after rectifying and voltage-stabilizing, when dynamic load adjusts, electric voltage exception is fed back to MCU in time, and MCU is by controlling output voltage.
Further, set two or more Ping stage Frequency point to take turns to operate.
Further, when voltage sample value is less than limit value, MCU regulates wireless charging transmitting terminal inversion unit operating state.
Further, MCU regulates wireless charging transmitting terminal inversion unit adjustment switching frequency, and phase place or amplitude improve output voltage capability.
Further, when voltage sample value is greater than limit value, MCU controls to make system turn-off protection, makes system re-start communication detection, re-starts and identifies configuration.
Further, also comprise current sample element, current sample element is sampled to output current, feeds back to MCU when quick dynamic conditioning appears in electric current, and MCU controls energy-storage travelling wave tube electric discharge, to remove or to reduce the impact of load dynamic fluctuation on wireless charging system.
Present invention also offers a kind of wireless charging method, two or more Ping stage Frequency point is set and takes turns to operate.
Further, sample to voltage after rectifying and voltage-stabilizing, when dynamic load adjusts, electric voltage exception is fed back to MCU in time, MCU is by controlling output voltage.
Further, when voltage sample value is less than limit value, MCU regulates wireless charging transmitting terminal inversion unit operating state, and comprise adjustment switching frequency, phase place or amplitude improve output voltage capability; When voltage sample value is greater than limit value, MCU controls to make system turn-off protection, makes system re-start communication detection, re-starts and identifies configuration.
Further, to output current sampling, feed back to MCU when quick dynamic conditioning appears in electric current, MCU controls energy-storage travelling wave tube electric discharge, to remove or to reduce the impact of load dynamic fluctuation on wireless charging system.
The invention solves the problem that the ubiquitous dynamic load response of current wireless charging system is abnormal and wireless charging distance is less, avoid the infringement of wireless charging system to receiving terminal circuit element and the assembly problem of office furniture.
Accompanying drawing explanation
Fig. 1 is the receiver module theory diagram of wireless charging system of the present invention;
Fig. 2 is wireless charging system workflow diagram.
Embodiment
below in conjunction with accompanying drawing, the invention will be further described.
According to the corresponding relation of wireless charging system receiving terminal resonance potential and resonance frequency in Qi standard, when wireless charging distance increases, in order to ensure that Ping stage wireless charging receiving terminal obtains enough energy and communicates to make wireless charging transmitting terminal to set up with receiving terminal, the frequency in Ping stage can be reduced.Simultaneously in order to avoid setting up the problem of communication failure because wireless charging causes protection apart from the little Ping stage wireless charging receiving terminal caused; can set two or more Ping stage Frequency point to take turns to operate, guarantee system all normally can set up communication at certain wireless charging apart from interior.
For wireless charging system receiver module theory diagram as shown in Figure 1,
Wireless charging receiver module comprises energy acceptance coil, rectification circuit, switching tube, energy-storage travelling wave tube, DC-DC, voltage sampling element, current sample element and communication control unit MCU.
In wireless charging receiver module, receiving coil and electric energy transmitting terminal coil coupling carry out Energy Transfer.
In wireless charging receiver module, the AC energy that coil passes over by rectification circuit is rectified into direct current.
In wireless charging receiver module, switching tube mainly utilizes switch time delay to carry out voltage stabilizing, and the temporary impact of the load when starting shooting also can be avoided the impact of system.
In wireless charging receiver module, energy-storage travelling wave tube is that electric capacity, battery etc. can energy storage means.
In wireless charging receiver module, DC-DC is DC voltage-stabilizing change-over circuit.
In wireless charging receiver module, voltage sampling element is used to sample to voltage after rectifying and voltage-stabilizing, when dynamic load adjusts, electric voltage exception is fed back to MCU in time, and MCU by controlling output voltage, thus ensures that wireless charging system normally works.
In wireless charging receiver module, current sample element is used to sample to output current, MCU is fed back in time when quick dynamic conditioning appears in electric current, MCU controls energy-storage travelling wave tube electric discharge, to remove or to reduce load dynamic fluctuation to the impact of wireless charging system, thus ensure that wireless charging system normally works.
In wireless charging receiver module, communication control unit MCU primary responsibility communication signal controls power-supply system, carries out a series of security control such as over-voltage over-current protection, foreign matter identification with software to system.
As shown in Figure 2, when voltage sample value is less than limit value, MCU regulates wireless charging transmitting terminal inversion unit operating state to wireless charging system workflow, and such as adjust switching frequency, phase place or amplitude improve output voltage capability; When voltage sample value is greater than limit value, MCU controls to make system turn-off protection, makes system re-start communication detection, re-starts and identifies configuration.
When current sampling data is less than limit value, MCU carries out voltage stabilizing process, such as opens energy-storage travelling wave tube, ensures system worked well.
Claims (10)
1. a wireless charging system, comprise wireless charging receiver module, it is characterized in that: described wireless charging receiver module has MCU and voltage sampling element, voltage sampling element is sampled to voltage after rectifying and voltage-stabilizing, when dynamic load adjusts, electric voltage exception is fed back to MCU in time, MCU is by controlling output voltage.
2. wireless charging system as claimed in claim 1, is characterized in that: set two or more Ping stage Frequency point and take turns to operate.
3. wireless charging system as claimed in claim 1 or 2, is characterized in that: when voltage sample value is less than limit value, and MCU regulates wireless charging transmitting terminal inversion unit operating state.
4. wireless charging system as claimed in claim 3, is characterized in that: MCU regulates wireless charging transmitting terminal inversion unit adjustment switching frequency, and phase place or amplitude improve output voltage capability.
5. wireless charging system as claimed in claim 1 or 2, is characterized in that: when voltage sample value is greater than limit value, and MCU controls to make system turn-off protection, makes system re-start communication detection, re-starts and identifies configuration.
6. wireless charging system as claimed in claim 1 or 2, it is characterized in that: also comprise current sample element, current sample element is sampled to output current, MCU is fed back to when quick dynamic conditioning appears in electric current, MCU controls energy-storage travelling wave tube electric discharge, to remove or to reduce the impact of load dynamic fluctuation on wireless charging system.
7. a wireless charging method, is characterized in that: arrange two or more Ping stage Frequency point and take turns to operate.
8. wireless charging method as claimed in claim 7, it is characterized in that: sample to voltage after rectifying and voltage-stabilizing, when dynamic load adjusts, electric voltage exception is fed back to MCU in time, MCU is by controlling output voltage.
9. wireless charging method as claimed in claim 8, is characterized in that: when voltage sample value is less than limit value, and MCU regulates wireless charging transmitting terminal inversion unit operating state, and comprise adjustment switching frequency, phase place or amplitude improve output voltage capability; When voltage sample value is greater than limit value, MCU controls to make system turn-off protection, makes system re-start communication detection, re-starts and identifies configuration.
10. wireless charging method as claimed in claim 8 or 9, it is characterized in that: output current is sampled, feed back to MCU when quick dynamic conditioning appears in electric current, MCU controls energy-storage travelling wave tube electric discharge, to remove or to reduce the impact of load dynamic fluctuation on wireless charging system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510265378.9A CN104868610A (en) | 2015-05-22 | 2015-05-22 | Wireless charging system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510265378.9A CN104868610A (en) | 2015-05-22 | 2015-05-22 | Wireless charging system and method |
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| Publication Number | Publication Date |
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| CN104868610A true CN104868610A (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510265378.9A Pending CN104868610A (en) | 2015-05-22 | 2015-05-22 | Wireless charging system and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105226779A (en) * | 2015-10-19 | 2016-01-06 | 广东欧珀移动通信有限公司 | Wireless charging device and control method thereof and control device |
| CN106740167A (en) * | 2016-11-21 | 2017-05-31 | 江苏大学 | A kind of electric automobile dynamic regulation wireless charging system and its control method |
| CN108896849A (en) * | 2018-07-19 | 2018-11-27 | 北京师范大学珠海分校 | Wireless charging system fault recognition method, device and computer equipment |
-
2015
- 2015-05-22 CN CN201510265378.9A patent/CN104868610A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105226779A (en) * | 2015-10-19 | 2016-01-06 | 广东欧珀移动通信有限公司 | Wireless charging device and control method thereof and control device |
| CN106740167A (en) * | 2016-11-21 | 2017-05-31 | 江苏大学 | A kind of electric automobile dynamic regulation wireless charging system and its control method |
| CN106740167B (en) * | 2016-11-21 | 2019-04-02 | 江苏大学 | A kind of electric car dynamic regulation wireless charging system and its control method |
| CN108896849A (en) * | 2018-07-19 | 2018-11-27 | 北京师范大学珠海分校 | Wireless charging system fault recognition method, device and computer equipment |
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Application publication date: 20150826 |