CN102457091A - Anti-interference inductive wireless charger and anti-interference method - Google Patents
Anti-interference inductive wireless charger and anti-interference method Download PDFInfo
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- CN102457091A CN102457091A CN2010105247163A CN201010524716A CN102457091A CN 102457091 A CN102457091 A CN 102457091A CN 2010105247163 A CN2010105247163 A CN 2010105247163A CN 201010524716 A CN201010524716 A CN 201010524716A CN 102457091 A CN102457091 A CN 102457091A
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- wireless charger
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Abstract
The invention relates to an anti-interference inductive wireless charger and an anti-interference method. The anti-interference method is as follows: a switching circuit or an overcurrent detection and protection device is arranged in the inductive wireless charger to control the working condition of the inductive wireless charger, and when the inductive wireless charger is interfered by an external magnetic field and the internal current increases unusually, the switching circuit or overcurrent detection and protection device automatically cuts off the current in the circuit of the wireless charger and stop the wireless charger. The anti-interference inductive wireless charger comprises a power input end, a transmission module and a receiving module, wherein the power input end is in wired connection with the transmission module, energy and information are transmitted between the transmission module and the receiving module through coils of the two modules, and the transmission module is in wireless connection with the receiving module; and the wireless charger also comprises the switching circuit which is used to control the working condition of the inductive wireless charger. The anti-interference method can be adopted to effectively avoid the failure of the inductive wireless charger.
Description
Technical field
The invention belongs to the power delivery and the signal of telecommunication and handle the technical field of integrating; Be that a kind of induction type wireless charger of avoiding receives external magnetic field to disturb the forfeiture charge function or the technical method that electronic building brick damages takes place when work, be specifically related to a kind of jamproof induction type wireless charger and anti-interference method.
Background technology
The induction type wireless charger is the loop circuit back coupling control control device of wireless of a new generation, and its cardinal principle charges for the battery of various mobile devices for using induction type radio source and signal transmission technology, and the application transformer principle carries out power transfer.
The induction type wireless charger mainly is made up of power input, transport module and receiver module; Wired connection between power input and the transport module; The energy radiating portion of forming the induction type wireless charger, receiver module are installed in the mobile device that needs charging, are energy receptor portions; Coil through separately between transport module and the receiver module carries out the transmission of energy and the transmission of information, is wireless connections.
The battery that the induction type wireless charger can be various mobile devices charges, for example mobile phone, digital camera, MP3 player etc.
Because the induction type wireless charger is to use transformer principle to carry out power transfer and information transmission; So its inner coil class component be subject in working order extraneous magnetic force thing or magnetic field interference and can't operate as normal; Even the damage of intraware can take place, thereby cause the inefficacy of induction type wireless charger.The induction type wireless charger of taking coil can bear maximum current 3.3A comes for example; Current peak during its operate as normal is 1.52A; The cycle effective value is 0.558A, and when the magnetic force thing with 5100 Gauss's magnetic force near the time, its current peak can reach 3.52A; The cycle effective value is 2.37A, and the interior coil of charger this moment just has the risk of damage; When the magnetic force thing with 5750 Gauss's magnetic force near the time, its current peak can reach 5.3A, the cycle effective value is 3.36A, thereby coil can't bear excessive electric current and damage this moment.For avoiding the generation of this type of fault, must use the inefficacy that the induction type wireless charger is avoided in a kind of guard method.
Summary of the invention
The purpose of this invention is to provide a kind of jamproof induction type wireless charger and anti-interference method, can effectively avoid the induction type wireless charger when work, to receive external magnetic field to disturb the damage of forfeiture charge function or generation electronic building brick.
The object of the invention is realized through following technical scheme:
A kind of anti-interference induction type wireless charger; Comprise power input, transport module and receiver module; Wired connection between power input and the transport module, the coil through separately between transport module and the receiver module carries out the transmission of energy and the transmission of information, is wireless connections; Also be provided with the operating state that switching circuit is used to control the induction type wireless charger in the charger; When the induction type wireless charger is increased by external magnetic field interfere with internal current anomaly; Switching circuit cuts off the electric current of induction type wireless charger circuit automatically, and it is quit work.
Above-mentioned said switching circuit is installed between power input and the transport module, or is installed in the internal circuit of transport module, or is installed in the internal circuit of receiver module.
Above-mentioned said switching circuit is the mechanical switch circuit, or the magnetic-type switching circuit, or the photoelectric switch circuit, or other forms of switching circuit.
After the induction type wireless charger quit work, switching circuit can recover the work of induction type wireless charger automatically, perhaps recovered the work of induction type wireless charger manually.
The invention also discloses a kind of anti-interference induction type wireless charger, is with an overcurrent detecting and protective device place of switches circuit.Likewise, overcurrent detecting and protective device are installed between power input and the transport module, or are installed in the internal circuit of transport module, or are installed in the internal circuit that receives module.。
The invention also discloses a kind of anti-interference method of induction type wireless charger; Be that switching circuit or overcurrent detecting and protective device are set in the induction type wireless charger; Be used to control the operating state of induction type wireless charger; When the induction type wireless charger was increased by external magnetic field interfere with internal current anomaly, switching circuit or overcurrent detecting and protective device cut off the electric current of induction type wireless charger circuit automatically, and it is quit work.
Principle of the present invention is following;
1, uses the operating state of a cover switching circuit control induction type wireless charger
The induction type wireless charger mainly is made up of power input, transport module and receiver module; Wired connection between power input and the transport module; Coil through separately between transport module and the receiver module carries out the transmission of energy and the transmission of information, is wireless connections.Switching circuit can be installed between power input and the transport module; Also can be installed in the internal circuit of transport module; Can be installed in the internal circuit of receiver module equally; No matter be installed in which position, it realizes that it is the same that sense of control is answered the principle of formula wireless charger operating state.
The induction type wireless charger is when work; If have the magnetic force thing near or have external magnetic field to disturb; Then the electric current through the coil in transport module and the receiver module can increase fast; The electric current of whole induction type wireless charger internal circuit also can increase thereupon, and this moment, switching circuit just can cut off the operating circuit of induction type wireless charger, thereby avoids excessive electric current to damage its inner electronic building brick.
When the function of this cover switching circuit of design; Can be set to automatically recovering or manually recovering, be automatic recovery if be set, then when the magnetic force thing away from or external magnetic field when disturbing disappearance; Switching circuit will recover the operating current of induction type wireless charger automatically, make it restart work; Be manual recovery if be set, then need artificial close switch circuit, the induction type wireless charger just can restart work.
Can use multiple switching circuit and realize above technical scheme, include but not limited to mechanical switch circuit, magnetic-type switching circuit, photoelectric switch circuit etc.
2, use the operating state of overcurrent detecting and protective device control induction type wireless charger
The function that overcurrent detecting and protective device possess detecting current intensity and protective circuit; It can be installed between power input and the transport module; Also can be installed in the internal circuit of transport module; Can be installed in equally in the internal circuit of receiver module, no matter be installed in which position, it realizes that it is the same that sense of control is answered the principle of formula wireless charger operating state.
The induction type wireless charger is when work; If have the magnetic force thing near or external magnetic field disturb; Then the electric current through the coil in transport module and the receiver module increases fast; The electric current of whole induction type wireless charger internal circuit also increases thereupon; When electric current reaches going up in limited time that overcurrent detecting and protective device set, the function of the protective circuit in overcurrent detecting and the protective device just can play a role, thereby the operating circuit that cuts off the induction type wireless charger avoids excessive electric current to damage the electronic building brick of induction type wireless charger inside.The upper current limit value of setting in overcurrent detecting and the protective device is transport module or accept the maximum that coil can bear electric current in the module normally.
When the function of design overcurrent detecting and protective device; Can be set to automatically recovering or manually recovering, be automatic recovery if be set, then when the magnetic force thing away from or external magnetic field when disturbing disappearance; The electric current that overcurrent detecting and protective device detect in the circuit has returned to normal value; When promptly being lower than the higher limit of the setting that preceding text mention, the function of protective circuit just can stop, and the induction type wireless charger will restart work; Be manual recovery if be set, then need artificial intervention overcurrent detecting and protective device just can connect circuit, the induction type wireless charger just can restart work.
Description of drawings
Fig. 1 is the schematic diagram of induction type wireless charger.
Fig. 2 is the schematic diagram that adds the induction type wireless charger of switching circuit between power input and the transport module.
Fig. 3 is the schematic diagram that adds the induction type wireless charger of switching circuit in the transport module.
Fig. 4 is the schematic diagram that adds the induction type wireless charger of switching circuit in the receiver module.
Fig. 5 is the schematic diagram that adds the induction type wireless charger of overcurrent detecting and protective device between power input and the transport module.
Fig. 6 is the schematic diagram that adds the induction type wireless charger of overcurrent detecting and protective device in the transport module.
Fig. 7 is the schematic diagram that adds the induction type wireless charger of overcurrent detecting and protective device in the receiver module.
Fig. 8 is for adding the circuit diagram of the mechanical switch circuit between power input and the transport module;
Wherein, 3-the one P type field-effect transistor, 7-the 2nd P type field-effect transistor, 9-capacitor, 15-the 2nd N type field-effect transistor, 16-the one N type field-effect transistor, 55-mechanical switch.
Fig. 9 is for adding the circuit diagram of the magnetic-type switching circuit between power input and the transport module;
Wherein, the 19-Hall amasss body circuit (HALL IC), 22-the one P type field-effect transistor, 26-the 2nd P type field-effect transistor, 32-the 2nd N type field-effect transistor, 33-the one N type field-effect transistor.
Figure 10 is the overcurrent detecting between adding power input and the transport module and the circuit diagram of protective device;
Wherein, 45-resistor, 52-comparator, 42-P type field-effect transistor, 50-N type field-effect transistor.
Figure 11 is the overcurrent detecting in the adding transport module and the circuit diagram of protective device;
Wherein, 41-resistor, 37-comparator, 40-N type field-effect transistor.
Embodiment
Core concept of the present invention is: the induction type wireless charger time is subject to external magnetic field in work and disturbs and lost efficacy, and for it installs a cover switching circuit or overcurrent detecting and protective device additional, thereby ensures that its internal electrical components can not damaged by excessive electric current.
Below in conjunction with accompanying drawing and specific embodiment method provided by the invention is further specified:
As shown in Figure 1; The induction type wireless charger mainly is made up of power input, transport module and receiver module; Wired connection between power input and the transport module, the coil through separately between transport module and the receiver module carries out the transmission of energy and the transmission of information, is wireless connections.
As shown in Figure 2, switching circuit can be installed between power input and the transport module.
As shown in Figure 3, switching circuit can be installed in the internal circuit of transport module.
As shown in Figure 4, switching circuit can be installed in the internal circuit of receiver module.
As shown in Figure 8; Between power input and transport module, add a cover mechanical switch circuit; During induction type wireless charger operate as normal, a N type field-effect transistor 16 is in on-state, and a P type field-effect transistor 3 and the 2nd P type field-effect transistor 7 also order are in on-state; This moment, the voltage at capacitor 9 two ends approached the voltage that power supply is imported; As the magnetic force thing near or when having external magnetic field to disturb, mechanical switch 55 is opened, the SW_OFF signal was changed into high potential and was made the 2nd N type field-effect transistor 15 transfer on-state to by electronegative potential this moment; The one N type field-effect transistor 16 states transfer closed condition to this variation; And a P type field-effect transistor 3 and the 2nd P type field-effect transistor 7 also convert closed condition in proper order, and the operating circuit of induction type wireless charger just is cut off, and avoid excessive electric current to damage other electronic building brick.
As shown in Figure 9; Between power input and transport module, add a cover magnetic-type switching circuit, during induction type wireless charger operate as normal, a N type field-effect transistor 33 is in on-state; The one P type field-effect transistor 22 and the 2nd P type field-effect transistor 26 also order are in on-state; The voltage at long-pending body circuit (HALL IC) 19 two ends of Hall this moment approaches the voltage of power supply input, as the magnetic force thing near or when having external magnetic field to disturb, Hall amass body circuit (HALL IC) 19 owing to its part characteristic; Make output signal (SW_OFF signal) change high potential into by electronegative potential; This makes the 2nd N type field-effect transistor 32 transfer on-state to, and a N type field-effect transistor 33 states transfer closed condition to this variation, and a P type field-effect transistor 22 and the 2nd P type field-effect transistor 26 also order convert closed condition into; The operating circuit of induction type wireless charger just is cut off, and avoids excessive electric current to damage other electronic building brick.
As shown in Figure 5, overcurrent detecting and protective device can be installed between power input and the transport module.
As shown in Figure 6, overcurrent detecting and protective device can be installed in the internal circuit of transport module.
As shown in Figure 7, overcurrent detecting and protective device can be installed in the internal circuit of receiver module.
Shown in figure 10, seal in resistor 45 to produce transmission current detection signal V_OC in the coil and the earth terminal centre of transport module, set a reference signal in the comparator 52, what this reference signal was corresponding is exactly the upper current limit value of operating circuit.Transmission current detection signal V_OC is by the negative pole input of comparator 52; Comparator 52 compares itself and anodal reference signal; When the cathode voltage of comparator 52 was higher than cathode voltage, the output of comparator 52 was just exported high potential, made N type field-effect transistor 50 be in on-state; And P type field-effect transistor 42 also is in on-state, at this moment induction type wireless charger operate as normal; As the magnetic force thing near or when having external magnetic field to disturb, operating current reaches the higher limit of overcurrent protection, promptly transmission current detection signal V_OC is better than reference signal; Comparator 52 cathode voltages are higher than cathode voltage; Comparator 52 outputs output this moment electronegative potential, N type field-effect transistor 50 converts closed condition into, and P type field-effect transistor 42 also will convert closed condition into; The operating circuit of induction type wireless charger just is cut off, and avoids excessive electric current to damage other electronic building brick.
Shown in figure 11, in the middle of transmitting device coil and earth terminal, seal in resistor 41 to produce transmission current detection signal V_OC, set a reference signal in the comparator 37, what this reference signal was corresponding is exactly the upper current limit value of operating circuit.Transmission current detection signal V_OC is by the negative pole input of comparator 37; Comparator 37 compares itself and anodal reference signal; When the cathode voltage of comparator 37 was higher than cathode voltage, the output of comparator 37 was just exported high potential, made N type field-effect transistor 40 be in on-state; This moment V_latch_off or the IC_enable signal belongs to electronegative potential, induction type wireless charger operate as normal; As the magnetic force thing near or when having external magnetic field to disturb; Operating current reaches the higher limit of overcurrent protection; Be that transmission current detection signal V_OC is better than reference signal, the cathode voltage of comparator 37 is higher than cathode voltage, and this moment, the output of comparator 37 was exported electronegative potential; Make N type field-effect transistor 40 convert closed condition into; This moment V_latch_off or the IC_enable signal belongs to quick condition, the operating circuit of induction type wireless charger just is cut off, and avoids excessive electric current to damage other electronic building brick.
Claims (10)
1. anti-interference induction type wireless charger; Comprise power input, transport module and receiver module; Wired connection between power input and the transport module, the coil through separately between transport module and the receiver module carries out the transmission of energy and the transmission of information, is wireless connections; It is characterized in that; Also be provided with the operating state that switching circuit is used to control the induction type wireless charger; When the induction type wireless charger was increased by external magnetic field interfere with internal current anomaly, switching circuit cut off the electric current of induction type wireless charger circuit automatically, and it is quit work.
2. according to the said anti-interference induction type wireless charger of claim 1, it is characterized in that switching circuit is installed between power input and the transport module, or be installed in the internal circuit of transport module, or be installed in the internal circuit of receiver module.
3. anti-interference induction type wireless charger according to claim 1 is characterized in that described switching circuit is the mechanical switch circuit, or the magnetic-type switching circuit, or the photoelectric switch circuit, or other forms of switching circuit.
4. according to the said anti-interference induction type wireless charger of claim 1; After it is characterized in that the induction type wireless charger quits work; Switching circuit can recover the work of induction type wireless charger automatically, perhaps recovers the work of induction type wireless charger manually.
5. anti-interference induction type wireless charger according to claim 1 is characterized in that with an overcurrent detecting and protective device place of switches circuit.
6. anti-interference induction type wireless charger according to claim 5; It is characterized in that overcurrent detecting and protective device are installed between power input and the transport module; Or be installed in the internal circuit of transport module, or be installed in the internal circuit that receives module.
7. according to the said anti-interference induction type wireless charger of claim 5; After it is characterized in that the induction type wireless charger quits work; Overcurrent detecting and protective device can recover the work of induction type wireless charger automatically, perhaps recover the work of induction type wireless charger manually.
8. the anti-interference method of an induction type wireless charger; It is characterized in that; Be that switching circuit or overcurrent detecting and protective device are set in the induction type wireless charger, be used to control the operating state of induction type wireless charger, when the induction type wireless charger is increased by external magnetic field interfere with internal current anomaly; Switching circuit or overcurrent detecting and protective device cut off the electric current of induction type wireless charger circuit automatically, and it is quit work.
9. the anti-interference method of induction type wireless charger according to claim 8; It is characterized in that; Be that switching circuit overcurrent detecting and protective device are installed between power input and the transport module; Or be installed in the internal circuit of transport module, or be installed in the internal circuit of receiver module.
10. the anti-interference method of induction type wireless charger according to claim 9 is characterized in that, after extraneous magnetic disturbance disappears, and the work that switching circuit or overcurrent detecting and protective device can perhaps recover the induction type wireless charger automatically manually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010105247163A CN102457091A (en) | 2010-10-29 | 2010-10-29 | Anti-interference inductive wireless charger and anti-interference method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105247163A CN102457091A (en) | 2010-10-29 | 2010-10-29 | Anti-interference inductive wireless charger and anti-interference method |
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| CN2010105247163A Pending CN102457091A (en) | 2010-10-29 | 2010-10-29 | Anti-interference inductive wireless charger and anti-interference method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014023147A1 (en) * | 2012-08-09 | 2014-02-13 | 深圳市汇顶科技股份有限公司 | Capacitance touch sensor, touch terminal, and anti-interference method and system thereof |
| CN104898074A (en) * | 2014-03-06 | 2015-09-09 | 美格纳半导体有限公司 | Buried magnetic sensor |
| CN106022451A (en) * | 2016-06-02 | 2016-10-12 | 恒宝股份有限公司 | Double interface safe chip card and working method therefor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080205919A1 (en) * | 2007-02-28 | 2008-08-28 | Brother Kogyo Kabushiki Kaisha | Non-contact charger and non-contact charging system |
| CN101515725A (en) * | 2008-02-20 | 2009-08-26 | 郑春吉 | Non-contact power charging system and control method thereof |
| JP2010505379A (en) * | 2006-09-29 | 2010-02-18 | アクセス ビジネス グループ インターナショナル リミテッド ライアビリティ カンパニー | System and method for inductively charging batteries |
| CN201829998U (en) * | 2010-10-29 | 2011-05-11 | 南京萨特科技发展有限公司 | Anti-interference induction type wireless charger |
-
2010
- 2010-10-29 CN CN2010105247163A patent/CN102457091A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010505379A (en) * | 2006-09-29 | 2010-02-18 | アクセス ビジネス グループ インターナショナル リミテッド ライアビリティ カンパニー | System and method for inductively charging batteries |
| US20080205919A1 (en) * | 2007-02-28 | 2008-08-28 | Brother Kogyo Kabushiki Kaisha | Non-contact charger and non-contact charging system |
| CN101515725A (en) * | 2008-02-20 | 2009-08-26 | 郑春吉 | Non-contact power charging system and control method thereof |
| CN201829998U (en) * | 2010-10-29 | 2011-05-11 | 南京萨特科技发展有限公司 | Anti-interference induction type wireless charger |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014023147A1 (en) * | 2012-08-09 | 2014-02-13 | 深圳市汇顶科技股份有限公司 | Capacitance touch sensor, touch terminal, and anti-interference method and system thereof |
| CN104898074A (en) * | 2014-03-06 | 2015-09-09 | 美格纳半导体有限公司 | Buried magnetic sensor |
| CN106022451A (en) * | 2016-06-02 | 2016-10-12 | 恒宝股份有限公司 | Double interface safe chip card and working method therefor |
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Application publication date: 20120516 |