CN202034798U - Portable wireless charging device - Google Patents

Portable wireless charging device Download PDF

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Publication number
CN202034798U
CN202034798U CN2011200472220U CN201120047222U CN202034798U CN 202034798 U CN202034798 U CN 202034798U CN 2011200472220 U CN2011200472220 U CN 2011200472220U CN 201120047222 U CN201120047222 U CN 201120047222U CN 202034798 U CN202034798 U CN 202034798U
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CN
China
Prior art keywords
power supply
circuit
power
microprocessor
module
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CN2011200472220U
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Chinese (zh)
Inventor
蔡明球
詹其哲
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富达通科技股份有限公司
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Priority to CN2011200472220U priority Critical patent/CN202034798U/en
Application granted granted Critical
Publication of CN202034798U publication Critical patent/CN202034798U/en

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Abstract

The present utility model relates to a portable wireless charging device which comprises a power supply module, the electromagnetic wave energy is output to an electricity-receiving module of a handheld device by the power supply module through frequency conversion and driving power adjustment, By utilizing a power supply microprocessor of the power supply module, voltage power supply with different magnitudes input by an external power supply and an electric power receiving device can be received, the high voltage electric power of commercial power and the minimal voltage supply source of solar energy storage batteries can all be converted into the electric power supply used by the electricity-receiving module. Matched with the convenience of wireless charging, the electric power supply time of the handheld device of the electricity receiving end in operation can be prolonged.

Description

The portable wireless charging device
Technical field
The utility model relates to a kind of portable wireless charging device, and outstanding confession under directions electricity module can receive different big or small voltage sources and convert to and be subjected to the employed supply of electric power of electric module.
Background technology
Electronics technology epoch, world-wide web is ubiquitous now, various digital products are full of in life, for example digital camera, mobile phone, multimedia video player various images or sound portable electric devices such as (MP3 or MP4, MP5 players), and portable electric device is all towards light, thin, short, little, intelligent and multi-functional theory design.
Yet, portable electric device (as mobile phone) will reach to carry to be manipulated, at first to solve the problem that electric weight exhausts, generally come for the sustainable use of mobile phone in the mode that more renews battery, but the mobile phone specification of each label is not quite similar, the mobile phone that has is built-in with battery, can't change, must charge in the mode of the outside city of wired grafting electric jack by cradle when charging, perhaps utilize power line directly to connect the computer charging, also there are the externally hanging battery device of purchase or energy collecting device to connect charging in addition, yet be connected cradle or when charging with power line with USB with mobile phone, must be confined to indoor place uses, if can connect because of the computer of no city electric jack or USB jack out of doors, and can't utilize cradle, the problem that power line charges, when solving employed externally hanging battery device of outdoor charging or energy collecting device, then must increase to carry weight and spend cost in addition and buy, and because of its volume of externally hanging battery device bigger, the whole volume of mobile phone after combination becomes quite big, being difficult for gripping in charging mobile phone operation uses, and because of the volume of general energy collecting device bigger, can't connect to one with mobile phone, must utilize connecting line to connect, when making that carrying mobile phone goes out, must supply the externally hanging battery device with the bigger totes such as knapsack of spatial accommodation, energy collecting device and connecting line are deposited, and cause the convenience in the use comparatively not enough.
Moreover, just the favourable wireless power supply that sends electric power with electromagnetic wave induction, charge with wireless mode for portable electric device, yet in view of general wireless induction type power supply unit has partly problem, emission need precisely be alignd with induction receiving coil as wireless power, the power supply energy is fixing can't be along with coil respective distances and load state are adjusted to some extent, whole wireless power efficiency of transmission is relatively poor, in the big magnitude of voltage of the coil-induced reception of receiving end, and voltage is dropped to the magnitude of voltage of target requirement with DC decompression integrated circuit component (DC-DC Step-Down IC), because step-down action also is to switch by switch to finish, just can the produce power loss in its handoff procedure, disturb assorted letter and heat energy to produce.
Make this existing wireless power supply can't receive on the different input voltages and use (originating) as receiving big supplies of electric power such as natural energy, civil power such as small solar energy, can only limit to and receive single voltage source, applicability is slightly inadequate, therefore, how to solve the problems of present existence, be the utility model designer and the direction place of being engaged in this journey improvement that the dealer desires most ardently.
Summary of the invention
According to considering of above-mentioned many shortcomings, the designer analyses in depth and inquires at doing one on the characteristic of wireless charging device, and via assessing in many ways and considering, and by doing painstaking research and researching and developing, and then studying and revising with what work with perseverance, the beginning is designed the utility model patent of this kind portable wireless charging device.
Main purpose of the present utility model is that the supply module that is wireless charging device is exported electromagnetic wave energy to being subjected to electric module by frequency conversion and driving power adjustment, utilize the power supply microprocessor of supply module can receive the external power supply unit or power receiving system is imported different big or small voltage sources, all can reach to convert to and be subjected to the employed supply of electric power of electric module, the convenience of collocation wireless charging, intercropping prolongs in the time of can allowing the supply of electric power in action time of the hand-held device of receiving end.
Secondary objective of the present utility model is to be that the power supply microprocessor of supply module can be by software program running safety, the efficient wireless power that carries out, and the exportable pulse-width modulation of power supply microprocessor signal to the first drive circuit, second drive circuit, and the state of exporting by software program inspection power supply resonant circuit power carries out the frequency conversion type adjustment, power output also precisely can be controlled in the scope of system requirements fast, also can carry out multipoint voltage and monitoring temperature simultaneously.
For achieving the above object, portable wireless charging device of the present utility model, include supply module, have software program and memory in the set power supply microprocessor of supply module, and the power supply microprocessor is electrically connected with the power circuit that can receive external power source, the power supply microprocessor is parallel with can be by first drive circuit and second drive circuit of power circuit power supply, and in first drive circuit, second drive circuit is respectively equipped with two groups of above MOSFET arrays in parallel, first drive circuit is electrically connected with the power supply resonant circuit with capacitor array, the power supply resonant circuit is electrically connected with can be by the second drive circuit power supply VTIC energy to the supply lines coil array that is subjected to electric module, and the supply lines coil array is electrically connected with signal sampling circuit, this signal sampling circuit is parallel with data parsing circuit and the voltage detecting circuit that is connected in the power supply microprocessor, wherein:
The power circuit of this supply module has the external power supply unit and the power receiving system of the different big small voltages of input, and power receiving system is connected with collecting circuit, the charging control circuit that collecting circuit passes through to be connected is stored to power supply in the storage battery, the power supply microprocessor is by the external power supply unit and the storage battery of connected voltage detecting circuit detection system source voltage, and the power supply microprocessor is parallel with first power switch circuit that switches in order to electrical arrangement, second source switching circuit and the 3rd power switch circuit, wherein, first power switch circuit is in order to the power supply that receives the external power supply unit and reach charging control circuit, the second source switching circuit is in order to the power supply that receives the external power supply unit and reach supply module, and the 3rd power switch circuit is in order to the power supply that receives storage battery and reach supply module.
Preferably, the external power supply unit of this supply module changes direct-current transformer or city's plug connection input power supply with USB (USB, Universal Serial BUS), alternating current.
Preferably, the power receiving system of this supply module receive the outside small energy source of solar energy, kinetic energy or thermal energy collecting device and continual storage DC power supply to storage battery.
Preferably, the power supply microprocessor of this supply module is electrically connected with the temperature detecting module that can check first drive circuit, second drive circuit and supply lines coil array operational temperature.
Utilize the power supply microprocessor of supply module of the present utility model can receive the external power supply unit, power receiving system is imported different big or small voltage sources, as the high-voltage power of civil power during to the small voltage source of supply of solar storage battery, all can reach to convert to and be subjected to the employed supply of electric power of electric module, the convenience of collocation wireless charging, intercropping prolongs in the time of can allowing the supply of electric power in action time of the hand-held device of receiving end.
Description of drawings
Fig. 1 is the calcspar of the utility model supply module;
Fig. 2 is subjected to the calcspar of electric module for the utility model;
Fig. 3 is the power circuit calcspar of the utility model supply module;
Fig. 4 is resonance frequency of the present utility model and amplitude variations schematic diagram.
Description of reference numerals: 1-supply module; The 11-microprocessor of powering; The 12-power circuit; 121-external power supply unit; The 122-power receiving system; The 123-collecting circuit; The 124-charging control circuit; The 125-storage battery; The 126-voltage detecting circuit; 127-first power switch circuit; 128-second source switching circuit; 129-the 3rd power switch circuit; 13-first drive circuit; The 131-MOSFET array; The 132-MOSFET array; The 133-MOSFET array; 14-second drive circuit; The 141-MOSFET array; The 142-MOSFET array; The 143-MOSFET array; The 15-resonant circuit of powering; The 151-capacitor array; 152-supply lines coil array; The 16-signal sampling circuit; 161-data parsing circuit; The 17-voltage detecting circuit; The 18-temperature detecting module; 2-is subjected to electric module; 21-is subjected to electric microprocessor; 22-is subjected to electric resonant circuit; 221-is subjected to the electric coil array; 222-main resonance electric capacity; 223-resonant capacitance; 224-low power stabilized device; The 23-synchronous rectifier; The 24-filter circuit; The 241-high-frequency filter capacitor; 242-first mains switch; 243-low frequency filtering electric capacity; 244-second source switch; 25-receiving end efferent; The 26-voltage detecting circuit; The 27-signal modulation circuit; The 28-temperature detecting module.
Embodiment
For reaching above-mentioned purpose and effect, technological means that the utility model adopted and structure thereof are painted accompanying drawing now and are illustrated in detail that with regard to preferred embodiment of the present utility model its feature and function are as follows, in order to understanding fully.
See also Fig. 1, shown in Figure 2, for the calcspar of the utility model supply module and be subjected to the calcspar of electric module, can find out that the utility model includes supply module 1 and is subjected to electric module 2 by clear among the figure, wherein:
This supply module 1 is provided with power supply microprocessor 11, and have operation sequence in power supply microprocessor 11, relevant software programs and memories such as control program, and power supply microprocessor 11 is electrically connected with the power circuit 12 of power supply, and power supply microprocessor 11 be parallel with can be by first drive circuit 13 and second drive circuit 14 of power circuit 12 power supplies, its first drive circuit 13 is provided with two groups or more MOSFET array 131 in parallel, 132,133, second drive circuit 14 also is provided with two groups or more MOSFET array 141 in parallel, 142,143, be electrically connected with power supply resonant circuit 15 by first drive circuit 13 again with capacitor array 151; In addition, power supply resonant circuit 15 is electrically connected with can be by the supply lines coil array 152 of second drive circuit, 14 power supply VTIC energy, and supply lines coil array 152 is electrically connected with signal sampling circuit 16, and signal sampling circuit 16 is parallel with data parsing circuit 161 and the voltage detecting circuit 17 that is connected in power supply microprocessor 11; In addition, power supply microprocessor 11 is electrically connected with the temperature detecting module 18 that can check first drive circuit 13, second drive circuit 14 and supply lines coil array 152 operational temperature.
This is provided with by electric module 2 and is subjected to electric microprocessor 21, and have operation sequence in being subjected to electric microprocessor 21, relevant software programs and memories such as control program, and be electrically connected with by electric microprocessor 21 and can be subjected to electric resonant circuit 22 by what be subjected to that electric coil array 221 receives the power supply energy, wherein be subjected to electric coil array 221 to be parallel with main resonance electric capacity 222 and time resonant capacitance 223, and main resonance electric capacity 222 is electrically connected with synchronous rectifier 23, and is electrically connected with by 223 of inferior resonant capacitances and can supplies the low power stabilized device 224 that is subjected to electric microprocessor 21 and synchronous rectifier 23 low-tension supplies; In addition, synchronous rectifier 23 is electrically connected with filter circuit 24, and filter circuit 24 is provided with high-frequency filter capacitor 241 in regular turn, first mains switch 242, low frequency filtering electric capacity 243 and externally the output DC source to the second source switch 244 of receiving end efferent 25, and high-frequency filter capacitor 241, low frequency filtering electric capacity 243 is electrically connected with can be checked voltage signal and transfer to the voltage detecting circuit 26 that is subjected to electric microprocessor 21, and drives first mains switch 242 again after being subjected to electric microprocessor 21 to check out voltage detecting circuit 26 voltage condition, second source switch 244 turn-on powers carry out the output DC source through high-frequency filter capacitor 241 or low frequency filtering electric capacity 243; Again, be electrically connected with by electric microprocessor 21 can to receive its code signal and by being subjected to electric coil array 221 transmitted data signal to supply module 1 to judge the signal modulation circuit 27 of power output size, and be subjected to electric microprocessor 21 to be electrically connected with the temperature detecting module 28 that to check filter circuit 24 and be subjected to electric coil array 221 operational temperature.
See also shown in Figure 3, power circuit calcspar for the utility model supply module, can find out by clear among the figure, the power circuit 12 of the utility model supply module 1 is connected with the external power supply unit 121 for the different big small voltages of input, and has the power receiving system 122 that receives external power source in addition, and power receiving system 122 is connected with collecting circuit 123, because energy is small can't directly to drive wireless charging device, so the charging control circuit 124 that the energy that collecting circuit 123 is collected passes through to be connected is stored in the storage battery 125, and prevent to overcharge, cross and put and the contrary damage power receiving system 122 that dashes, and power supply microprocessor 11 is by the situation of external power supply unit 121 with the storage battery 125 of the voltage detecting circuit 126 detection systems source voltage of connection, be used for the decision operation pattern, and power supply microprocessor 11 is parallel with first power switch circuit 127, second source switching circuit 128 and the 3rd power switch circuit 129, and first power switch circuit 127 receives the power supply of external power supply unit 121 and reaches charging control circuit 124, and second source switching circuit 128 receives the power supply of external power supply unit 121 and reaches supply module 1, and the 3rd power switch circuit 129 receives the power supply of storage battery 125 and reaches supply module 1, and power supply microprocessor 11 is to switch first, second and third power switch circuit 127,128,129 reach electrical arrangement.
When the utility model in when running; the system boot initialization; carry out built-in program earlier and read the stored system default parameter of memory with the power supply microprocessor 11 of supply module 1; and scanning coil resonance point; the scanning of power supply microprocessor 11 automatic frequency-conversions detects the supply lines coil array 152 of power supply resonant circuit 15 and the maximum resonance dot frequency F0 of capacitor array 151; the minimum resonance point frequency of system definition F1; the normality running resonance frequency F2 of system; the highest resonance point frequency F4 of the highest running resonance point frequency F3 of system and 11 outputs of power supply microprocessor; in the resonance frequency stored in memory; power supply microprocessor 11 is stored to the resonance frequency numerical value of contrast in its memory; and carry out holding state; power supply microprocessor 11 is output pulse width modulation (PWM not; Pulse Width Modulation) signal to the first; second drive circuit 13; 14 make power supply resonant circuit 15 can not launch electromagnetic wave energy; and begin the time-count cycle scheduled time; time-count cycle then; power supply microprocessor 11 output of short duration pulse-width modulation (PWM) signals to the first; second drive circuit 13; 14 make power supply resonant circuit 15 launch electromagnetic wave energy send; the readout data signal state; signal sampling circuit 16 is detected by the correspondence of electric module 2 feedback data signals via supply lines coil array 152; if sometimes; promptly receive and be subjected to electric module 2 data-signals promptly to enter powering mode; power supply microprocessor 11 output continuous pulse-width modulation (PWM) signals to the first; second drive circuit 13; 14 begin to sent by electric module 2 power supply resonant circuit 15 after launching electromagnetic wave energy; if when not having; then get back to holding state; and system exception or receiving end signal off-line be interruption of power supply pattern and enter holding state then, also can get back to holding state.
Learn that by above-mentioned supply module 1 of the present utility model can utilize power input interface (as USB, alternating current changes direct-current transformer or city's plug etc.) be connected in external power supply unit 121, and make external power supply unit 121 import the different voltage sources of height, receive (as solar energy with power receiving system 122 in addition, kinetic energy or thermal energy collecting device) outside small energy source and continual storage DC power supply be to storage battery 125, continue charging for storage battery 125, detect the situation of external power supply unit 121 and storage battery 125 with voltage detecting circuit 126, carry out with four kinds of operator schemes switchings, first kind of pattern has under the situation of the high power of external power supply unit 121 inputs (changeing direct-current transformer as civil power or alternating current), 11 judgements of power supply microprocessor switch first with the operator scheme of high power supply, second source switching circuit 127,128 open, but with electric power directly radiating circuit with and transfer to storage battery 125 and charge, close the 3rd power switch circuit 129 simultaneously, and second kind of pattern has under the situation of the external power supply unit 121 general power of input (as the USB of computer), power supply microprocessor 11 judges that switching second source switching circuit 128 with the operator scheme of general power supply opens, but use with the direct radiating circuit of electric power, but electric power charges inadequately, close first simultaneously, the 3rd power switch circuit 127,129, and the third pattern does not have under the situation of external electric power, power supply microprocessor 11 judges that switching the 3rd power switch circuit 129 with storage battery 125 operation modes opens, use for radiating circuit with the electric power in the storage battery 125, close first simultaneously, second source switching circuit 127,128, and the 4th kind of pattern do not have external electric power, voltage detecting circuit 126 detects under the situation of storage battery 125 power shortages simultaneously, the electric power of system all can be cut off, up to detecting that power supply enters or storage battery 125 voltages are charged to the running value and start once again, and close first, second and third power switch circuit 127,128,129.
Then, the AC power of external power supply unit 121 converts DC power supply to through power circuit 12, use by power circuit 12 supply stabilizing low voltage power supplys to the microprocessor 11 of powering again, high voltage source then is supplied to first respectively, second drive circuit 13,14, and this is first years old, second drive circuit 13,14 are respectively equipped with two groups or two groups of above MOSFET arrays 131 in parallel, 132,133,141,142,143, and in the powering mode, can be by power supply microprocessor 11 output pulse width modulation (PWM) signals to the first, second drive circuit 13,14, and control its MOSFET array 131,132,133,141,142,143 switch motions, produce vibration in order to the capacitor array 151 that drives 15 tools of resonant circuit of powering with supply lines coil array 152 coupling resonance and launch generation resonant electromagnetic wave energy to being subjected to electric module 2 receiving ends, and can carry out analog/digital signal conversion by the data-signal that signal sampling circuit 16 is received, data parsing circuit 161 is resolved, and voltage detecting circuit 17 is checked, analyze power supply resonant circuit 15 power output size, transfer to power supply microprocessor 11 again and judge whether to send electricity to being subjected to electric module 2.
In addition, power supply microprocessor 11 also can check first by temperature detecting module 18, second drive circuit 13,14 and the operational temperature of supply lines coil array 152, when temperature takes place when unusual, can close first by power supply microprocessor 11, second drive circuit 13,14 runnings, or change its MOSFET array 131 according to power demand, 132,133,141,142,143 groups of numbers, utilizing mode in parallel to redesign solves, and cooperate the wireless power that carries out that the software program running can safe and effective rate, pass through the state of the instant detection system of software program again, and can carry out the power output adjustment according to load state immediately, also can carry out the monitoring of multipoint voltage and temperature simultaneously.
Above-mentioned supply module 1 is when carrying out the scanning coil resonance point, read the highest resonance frequency that the stored system parameters of memory is set with power supply microprocessor 11 earlier, output pulse width modulation (PWM) signal to the first again, second drive circuit 13,14 drive power supply resonant circuit 15, and power supply microprocessor 11 can automatic frequency-conversion scanning detect the supply lines coil array 152 of power supply resonant circuit 15 and the coil signal amplitude of capacitor array 151, with the coil signal amplitude that detected and system default parameter comparison whether in scope, when if coil signal amplitude ratio system default parameter is high, promptly improve resonance frequency, and the coil signal amplitude is moved toward the highest running resonance point frequency F3 of system, repeat output pulse width modulation (PWM) signal to the first again, second drive circuit 13,14 drive power supply resonant circuit 15, when if coil signal amplitude ratio system default parameter is low, promptly reduce resonance frequency, and the coil signal amplitude is moved toward the minimum resonance point frequency of system definition F1, repeat output pulse width modulation (PWM) signal to the first again, second drive circuit 13,14 drive power supply resonant circuit 15, microprocessor 11 is stored to resonance frequency numerical value in its memory and uses as the normality running resonance frequency F2 of system if the coil signal amplitude in the system default parameter scope time, is then powered.
And supply module 1 in time-count cycle then, power supply microprocessor 11 output of short duration pulse-width modulation (PWM) signals to the first, second drive circuit 13,14 make power supply resonant circuit 15 launch electromagnetic wave energy, read the resonance frequency numerical value that stores in the memory again, and output pulse width modulation (PWM) signal to the first, second drive circuit 13,14 make power supply resonant circuit 15 launch the highest resonance point frequency F4 that system parameters is set, revising the decline resonance frequency to the memory till the stored resonance frequency numerical value, continuously begin being subjected to electric module 2 to send electricity or detection signal feedback data-signal to use with the resonance frequency that stores in the output storage.
In addition, when receiving the data-signal that is subjected to electric module 2 receiving ends with supply module 1, system enters powering mode, and power supply microprocessor 11 is resolved the supply lines coil array 152 received identification codes that are subjected to electric module 2 data-signals by signal sampling circuit 16, power supply microprocessor 11 is judged, if during the identification code of non-correct correspondence, promptly be judged as and do not have the corresponding electric module 2 that is subjected to, and the interruption of power supply pattern enters holding state, if during the identification code of correct correspondence, then read the power dateout of the stored system default parameter of memory, and judge the power demand that is subjected to electric module 2 and revise its power output size, if when reducing power output, promptly improve output pulse width modulation (PWM) signal frequency, make first, second drive circuit 13,14 reduce power supply resonant circuit 15 power output size, if when improving power output, then reduce output pulse width modulation (PWM) signal frequency, make first, second drive circuit 13,14 improve power supply resonant circuit 15 power output size, reexamine system power supply power output state, and power supply microprocessor 11 is checked by voltage detecting circuit 17 again, judge the power output size of power supply resonant circuit 15, if being output as, power surpasses present first, second drive circuit 13, during 14 export-restrictions, promptly increase by first, second drive circuit 13, the 14 MOSFET arrays 131 that drive, 132,133,141,142,143 group number, if power is output as and is lower than present first, second drive circuit 13, during 14 export-restrictions, promptly reduce first, second drive circuit 13, the 14 MOSFET arrays 131 that drive, 132,133,141,142,143 group number, if power output is present first, second drive circuit 13, in the time of in the scope of 14 export-restrictions, then do not change first, second drive circuit 13, the 14 MOSFET arrays 131 that drive, 132,133,141,142,143 group number, check first by temperature detecting module 18 again, second drive circuit 13,14 and supply lines coil array 152 operational temperature, power supply microprocessor 11 is judged operational temperature more whether in the preset temperature limited field, in the time of if yes, be that temperature is normal, prepare inspection next time, repeat aforementioned power supply microprocessor 11 again and resolve the supply lines coil array 152 received orders that are subjected to the identification code of electric module 2 data-signals by signal sampling circuit 16, if in the time of not, then the interruption of power supply pattern enters holding state.
In addition, when the electric resonant circuit 22 that is subjected to that is subjected to electric module 2 receives the supply module 1 of short duration pulse-width modulation of output (PWM) when signal is launched electromagnetic wave energy, be subjected to electric module 2 systems to enter boot program, be subjected to electric microprocessor 21 to close first mains switch 242 of synchronous rectifier 23 and filter circuit 24, second source switch 244, supply module 1 detects when receiving the identification code that is subjected to 2 feedback data-signals of electric module, promptly to sent by electric module 2, and be subjected to electric microprocessor 21 to open synchronous rectifier 23, and check the voltage condition of the high-frequency filter capacitor 241 of filter circuits 24 by voltage detecting circuit 26, when if voltage is lower than limit, promptly be subjected to electric microprocessor 21 outputs raising code signal of power demand to signal modulation circuit 27, and by exported by electric coil array 221 transmitted data signal to supply module 1 corrected output, when if voltage is higher than limit, then be subjected to electric microprocessor 21 outputs reduction code signal of power demand to signal modulation circuit 27, and by exported by electric coil array 221 transmitted data signal to supply module 1 corrected output, check that by voltage detecting circuit 26 high-frequency filter capacitors 241 voltages are whether in limit again, when having in limit, be subjected to electric microprocessor 21 to open first mains switch 242, in the time of not in limit, promptly be subjected to electric microprocessor 21 to judge whether high-frequency filter capacitor 241 continuous voltages are too high, if in the time of not, promptly be subjected to electric microprocessor 21 to check the voltage condition of the high-frequency filter capacitor 241 of filter circuit 24 again by voltage detecting circuit 26, if when too high is error condition, be subjected to electric microprocessor 21 to close first mains switch 242 of synchronous rectifier 23 and filter circuit 24, second source switch 244, again to be subjected to electric microprocessor 21 to export the code signal of interrupt power demands to signal modulation circuit 27, and by being subjected to electric coil array 221 transmitted data signal to supply module 1 to stop to send electricity, again in holding state.
In addition, open first mains switch 242 when being subjected to electric microprocessor 21, can check the voltage condition of the low frequency filtering electric capacity 243 of filter circuit 24 by voltage detecting circuit 26, when if voltage is lower than limit, promptly be subjected to electric microprocessor 21 outputs raising code signal of power demand to signal modulation circuit 27, and by exported by electric coil array 221 transmitted data signal to supply module 1 corrected output, and voltage is when being higher than limit, then be subjected to electric microprocessor 21 outputs reduction code signal of power demand to signal modulation circuit 27, and by exported by electric coil array 221 transmitted data signal to supply module 1 corrected output, and be subjected to electric microprocessor 21 to reexamine low frequency filtering electric capacity 243 voltages whether in limit by voltage detecting circuit 26, if in the time of not in limit, promptly be subjected to electric microprocessor 21 to judge whether low frequency filtering electric capacity 243 continuous voltages are too high, if in the time of not, even be subjected to electric microprocessor 21 to return the voltage condition of checking the low frequency filtering electric capacity 243 of filter circuit 24 by voltage detecting circuit 26, in the time of if yes, it then is error condition, be subjected to electric microprocessor 21 to close first mains switch 242 of synchronous rectifier 23 and filter circuit 24 again, second source switch 244, again when low frequency filtering electric capacity 243 voltages are in limit, then be subjected to electric microprocessor 21 to open second source switch 244, and second source switch 244 begins the receiving end efferent 25 output DC source that powers, and check filter circuit 24 and be subjected to electric coil array 221 operational temperature whether to be higher than limit by temperature detecting module 28, when temperature is too high, it then is error condition, repeat to be subjected to electric microprocessor 21 to close first mains switch 242 of synchronous rectifier 23 and filter circuit 24, second source switch 244, temperature normally then continues power supply, prepare voltage inspection next time, return the action that is subjected to electric microprocessor 21 to open synchronous rectifier 23.
Can know by above-mentioned implementation step and to learn, first, second drive circuit 13,14 of the utility model supply module 1 utilizes two groups or more MOSFET array in parallel 131,132,133,141,142,143 to disperse the electric current that passes through, and can reduce resistance value, the heating phenomenon of its electronic component in this kind equivalent resistance effect in parallel.
In addition, the design people is because prior art utilizes two groups of MOSFET arrays in order to drive resonant circuit, its function mode can be the full-bridge running can pass through the energy drives resonant circuit of the signals reverse driving of two groups of MOSFET arrays as the twice supply voltage, or can be half-bridge driven promptly one group be drive signal, another organizes the energy drives resonant circuit of then bringing in to energized as one times of supply voltage, but the MOSFET electronic component can exist the conducting resistance of RDS (ON) when conducting, its big electric current by the time just can cause temperature to rise so that burn, so at the utility model MOSFET array 131,132,133,141,142,143 burn the preceding temperature anomaly that produces rises, during overheating conditions, can monitor each group MOSFET array 131 by temperature detecting module 18 by power supply microprocessor 11,132,133,141,142,143, when temperature takes place when unusual, power supply microprocessor 11 can cut out its running, also can change MOSFET array 131 according to power demand, 132,133,141,142,143 group number, increase the driving amount when cooperating its high-power output, reduce impedance and temperature, or when small-power is exported reduction group number and reduce the power loss of switch element.
Please continue to consult shown in Figure 4, be resonance frequency of the present utility model and amplitude variations schematic diagram, find out that the resonance frequency of above-mentioned power supply resonant circuit 15 operates for the mode by automatic frequency-conversion scanning by knowing among the figure, each resonance point frequency is defined as follows, wherein:
F0 is the maximum resonance dot frequency of supply lines coil array 152 and capacitor array 151, its resonance frequency can change along with the change of capacitor array 151 sense values and environment, if supply module 1 can very greatly and cause system overload at this its amplitude of some running, so the software architecture of power supply microprocessor 11 can be avoided frequency of operation is outputed to this resonance point frequency in the utility model.
F1 is supply lines coil array 152 and the minimum resonance point frequency of the system definition of capacitor array 151, owing to resonance frequency can along with electric capacity sense value and environment change changes, can't be at predefined, so this resonance point frequency is defined out by systemic presupposition maximum functional amplitude V1.
F2 is system's normality running resonance frequency, and this resonance point frequency is defined out by systemic presupposition maximum functional amplitude V2.
F3 system the highest running resonance point frequency.
The highest resonance point frequency of F4 power supply microprocessor 11 outputs.
Owing to need the defining operation frequency range in the System Operation, to avoid the not enough or overload of power output, so need by continuous automatic frequency-conversion scanning, revise power controlling output size, the mode of its scanning is served as reasons earlier, and the highest resonance point frequency F4 of output begins toward descending, and the coil signal amplitude is also increasing, and this coil signal amplitude also will pass through V2 in regular turn, V1, power supply microprocessor 11 promptly stops power output after reaching V1, the resonance frequency numerical value of contrast can be stored in its memory and use for running, and beginning is detected by the correspondence of electric module 2 with the V2 resonance frequency, and in system F1, F2, F3, F4 is an on-fixed numerical value, and it can reach automatic adjustment along with being subjected to electric module 2 power demands constantly to revise resonance frequency, the effect of power controlling output.
At the corresponding various different driving voltages of the utility model frequency conversion type system, as high voltage (civil power, exchanging changes commutator transformer), general voltage (the USB output of computer apparatus) or low-voltage (cell voltage) input source, as shown in Figure 4, article three, curve is in the combination of same group of coil and electric capacity, its resonance curve is neither together under different voltage sources, and under high-output power V1 or the same frequency of low power output V2, high more driving voltage has high more output amplitude, when the output demand is high-output power V1, and when adopting the high voltage input source, system adjusts the coil signal amplitude automatically and moves and promptly be output to target power toward the highest running resonance point frequency F3, and when adopting general voltage input source, system adjusts the coil signal amplitude automatically and moves toward system normality running resonance frequency F2 and promptly be output to target power, and when adopting the low-voltage input source, system adjusts the coil signal amplitude automatically and promptly is output to target power toward moving with the minimum resonance point frequency of system definition F1, in addition, when the output demand is when hanging down power output V2, and when adopting the high voltage input source, system adjusts the coil signal amplitude automatically and moves and promptly be output to target power toward the highest resonance point frequency F4, and when adopting general voltage input source, system adjusts the coil signal amplitude automatically and moves and promptly be output to target power toward the highest running resonance point frequency F3 of system, and when adopting the low-voltage source input source, system adjusts the coil signal amplitude automatically and moves toward system normality running resonance frequency F2 and promptly be output to target power, to change operating frequency in order to adjust to the set value of the power of aims of systems, and variable quantity is slight change during practical operation, system can analyze automatically by software running output is set near desired value, so that the utility model is when adopting low-voltage input source (as cell apparatus etc.), because of the voltage of exporting can change along with the electric weight in the cell apparatus, reach in above-mentioned change operating frequency mode and can use revocable supply voltage, and needn't be earlier with voltage by booster circuit after definite value, just can offer wireless charging system transmitting terminal circuit and use.
In addition, the above only is preferred embodiment of the present utility model, non-so limit to claim of the present utility model, when frequency conversion output is used in from system's no-output to startup output in the utility model, also be to begin output and mix down to systemic presupposition F2 resonance frequency fast from the F4 frequency, if not when utilizing this kind mode, system just can directly export the F2 resonance frequency by the state of standby, slow down again after the excessive vibration of generation earlier in the characteristic of its resonant circuit and enter stable status, and because of repeatedly standby in the system design, enter holding state again after starting the transmission detection signal, also can constantly produce the excessive oscillatory occurences that just begins input signal, cause the rush of current and the Electromagnetic Interference (EMI of electronic component, Electro Magnetic Interference) problem such as, former its coil signal amplitude of the utility model automatic frequency-conversion technology that utilizes can be by small to the stable state of amplifying, the situation that can not produce the signal surging takes place, also the variable ratio frequency changer power controlling exports optimization to reach the effect of power saving, such as the product that can reach aforementioned effect is contained by the utility model all should, simple and easy modification of this kind and equivalent structure change, all should in like manner be contained in the claim of the present utility model, close and give Chen Ming.
In sum, portable wireless charging device of the present utility model is in use for reaching its effect and purpose really, so the utility model really is the utility model of a practicality excellence, for meeting the application important document of utility model patent, file an application in the whence in accordance with the law, expect that examining committee grants accurate the utility model early, ensureing designer's arduous design, if an ancient unit of weight office examine committee have any check doubtful, the indication of please writing to us without sparing, settled the doing one's utmost of designer cooperates, and the true feeling public affairs just.

Claims (3)

1. portable wireless charging device, include supply module, have memory in the set power supply microprocessor of supply module, and the power supply microprocessor is electrically connected with the power circuit that can receive external power source, the power supply microprocessor is parallel with can be by first drive circuit and second drive circuit of power circuit power supply, and in first drive circuit, second drive circuit is respectively equipped with two groups of above MOSFET arrays in parallel, first drive circuit is electrically connected with the power supply resonant circuit with capacitor array, the power supply resonant circuit is electrically connected with can be by the second drive circuit power supply VTIC energy to the supply lines coil array that is subjected to electric module, and the supply lines coil array is electrically connected with signal sampling circuit, this signal sampling circuit is parallel with data parsing circuit and the voltage detecting circuit that is connected in the power supply microprocessor, it is characterized in that:
The power circuit of this supply module has the external power supply unit and the power receiving system of the different big small voltages of input, and power receiving system is connected with collecting circuit, the charging control circuit that collecting circuit passes through to be connected is stored to power supply in the storage battery, the power supply microprocessor is by the external power supply unit and the storage battery of connected voltage detecting circuit detection system source voltage, and the power supply microprocessor is parallel with first power switch circuit that switches in order to electrical arrangement, second source switching circuit and the 3rd power switch circuit, wherein, first power switch circuit is in order to the power supply that receives the external power supply unit and reach charging control circuit, the second source switching circuit is in order to the power supply that receives the external power supply unit and reach supply module, and the 3rd power switch circuit is in order to the power supply that receives storage battery and reach supply module.
2. portable wireless charging device as claimed in claim 1 is characterized in that, the external power supply unit of this supply module changes direct-current transformer with USB, alternating current or city's plug connects the input power supply.
3. portable wireless charging device as claimed in claim 1 is characterized in that, the power supply microprocessor of this supply module is electrically connected with the temperature detecting module that can check first drive circuit, second drive circuit and supply lines coil array operational temperature.
CN2011200472220U 2011-02-24 2011-02-24 Portable wireless charging device CN202034798U (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102545399A (en) * 2012-03-13 2012-07-04 崔玉龙 Kilowatt level wireless electric energy transmission method
CN103094962A (en) * 2013-01-10 2013-05-08 李鹏 Portable power source used for wireless charging and wireless charging system
CN103151812A (en) * 2013-01-29 2013-06-12 深圳市中远航科技有限公司 Wireless charging mobile power supply
CN103166279A (en) * 2011-12-12 2013-06-19 宁太通讯股份有限公司 Mobile power
CN103872788A (en) * 2012-12-10 2014-06-18 联想(北京)有限公司 Power-supplying method, charging method and electronic device
CN103944215A (en) * 2014-03-17 2014-07-23 天津工业大学 Resonance type charging control system based on current feedback and control method thereof
CN104079047A (en) * 2013-03-27 2014-10-01 深圳市海洋王照明工程有限公司 Wireless charger
CN104779659A (en) * 2014-01-03 2015-07-15 苹果公司 Unified high power and low power battery charger
CN105389995A (en) * 2015-12-09 2016-03-09 赵树龙 Buried vehicle detector with wireless charging function
CN106160074A (en) * 2016-07-01 2016-11-23 芜湖宝瓶智能化服务外包有限公司 A kind of office, domestic desktop mancarried electronic aid wireless charging system
CN106961145A (en) * 2017-05-16 2017-07-18 金勇� A kind of Table top type wireless charging panel

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103166279A (en) * 2011-12-12 2013-06-19 宁太通讯股份有限公司 Mobile power
CN102545399B (en) * 2012-03-13 2014-10-22 崔玉龙 Kilowatt level wireless electric energy transmission method
CN102545399A (en) * 2012-03-13 2012-07-04 崔玉龙 Kilowatt level wireless electric energy transmission method
CN103872788A (en) * 2012-12-10 2014-06-18 联想(北京)有限公司 Power-supplying method, charging method and electronic device
CN103872788B (en) * 2012-12-10 2016-12-21 联想(北京)有限公司 Method of supplying power to, charging method and electronic equipment
CN103094962A (en) * 2013-01-10 2013-05-08 李鹏 Portable power source used for wireless charging and wireless charging system
CN103151812A (en) * 2013-01-29 2013-06-12 深圳市中远航科技有限公司 Wireless charging mobile power supply
CN104079047B (en) * 2013-03-27 2016-08-03 深圳市海洋王照明工程有限公司 Wireless charger
CN104079047A (en) * 2013-03-27 2014-10-01 深圳市海洋王照明工程有限公司 Wireless charger
CN104779659B (en) * 2014-01-03 2018-09-28 苹果公司 Unified high electric power and low power battery charger
CN104779659A (en) * 2014-01-03 2015-07-15 苹果公司 Unified high power and low power battery charger
US10305305B2 (en) 2014-01-03 2019-05-28 Apple Inc. Unified high power and low power battery charger
CN103944215A (en) * 2014-03-17 2014-07-23 天津工业大学 Resonance type charging control system based on current feedback and control method thereof
CN105389995A (en) * 2015-12-09 2016-03-09 赵树龙 Buried vehicle detector with wireless charging function
CN106160074A (en) * 2016-07-01 2016-11-23 芜湖宝瓶智能化服务外包有限公司 A kind of office, domestic desktop mancarried electronic aid wireless charging system
CN106160074B (en) * 2016-07-01 2019-01-15 江苏晶曌半导体有限公司 It is a kind of office, household desktop mancarried electronic aid wireless charging system
CN106961145A (en) * 2017-05-16 2017-07-18 金勇� A kind of Table top type wireless charging panel

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