CN104052108A - Circuit and method for power supply of electronic device and electronic device - Google Patents

Circuit and method for power supply of electronic device and electronic device Download PDF

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Publication number
CN104052108A
CN104052108A CN201410221552.5A CN201410221552A CN104052108A CN 104052108 A CN104052108 A CN 104052108A CN 201410221552 A CN201410221552 A CN 201410221552A CN 104052108 A CN104052108 A CN 104052108A
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circuit
electronic equipment
energy
power supply
power circuit
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CN201410221552.5A
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CN104052108B (en
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王芬清
郄勇
叶鑫
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Qingdao Goertek Co Ltd
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Qingdao Goertek Co Ltd
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Abstract

The invention discloses a circuit and method for power supply of an electronic device and the electronic device. The circuit comprises a voltage monitoring circuit, a control circuit, an auxiliary power supply circuit and a main power supply circuit comprising a battery. The auxiliary power supply circuit is used for collecting energy and converting the energy into electric energy and storing the electric energy; the voltage monitoring circuit is used for monitoring voltage of the auxiliary power supply circuit, sending first notification signals to the control circuit when voltage of the auxiliary power supply circuit reaches a first preset value, and sending second notification signals to the control circuit when voltage of the auxiliary power supply circuit is lower than a second preset value, wherein the first preset value is larger than the second preset value; and the control circuit is used for converting a working power supply circuit of the electronic device into the auxiliary power supply circuit when receiving the first notification signals, and switching the working power supply circuit of the electronic device into the main power supply circuit when receiving the second notification signals. According to the technical scheme, endurance working time of the electronic device can be prolonged to the largest extent, and accordingly user experience is improved.

Description

Power supply circuits, method of supplying power to and a kind of electronic equipment of electronic equipment
Technical field
The present invention relates to electronic equipment for electrical domain, the particularly power supply circuits of electronic equipment, method of supplying power to and a kind of electronic equipment.
Background technology
At present, intelligent electronic device, as intelligent bracelet, intelligent watch, intelligent glasses, intelligent button etc., is all to adopt button cell or chargeable lithium cell to power mostly, and due to the finite capacity of button cell, user needs frequently to change battery in use; And chargeable lithium cell is limited to the restriction of the little limited space of electronic equipment volume, the battery capacity of lithium battery is generally also no more than 100mAh.Therefore, existing electronic equipment supplying cell capacity is little, electronic equipment is short cruising time, and this defect has reduced user's experience.
Summary of the invention
The invention provides a kind of power supply circuits, method of supplying power to and a kind of electronic equipment of electronic equipment, experience the problem of reduction to solve the electronic equipment short user of causing in cruising time.
For achieving the above object, technical scheme of the present invention is achieved in that
According to an aspect of the present invention, provide a kind of power supply circuits of electronic equipment, this circuit comprises: electric voltage observation circuit, control circuit, auxiliary power circuit and comprise the main power circuit of battery;
Auxiliary power circuit, stores for harvest energy and after converting electric energy to;
Electric voltage observation circuit, for monitoring the voltage of auxiliary power circuit storage, in the time that reaching the first preset value, the voltage of auxiliary power circuit sends the first notification signal to control circuit, when the voltage of auxiliary power circuit storage sends the second notification signal to control circuit during lower than the second preset value; Wherein, the first preset value is greater than the second preset value;
Control circuit, in the time receiving the first notification signal, switches to auxiliary power circuit by the working power circuit of electronic equipment, in the time receiving the second notification signal, the working power circuit of electronic equipment is switched to main power circuit.
Wherein, auxiliary power circuit comprises: power conversion circuits and electrical energy storage circuit;
Power conversion circuits, stores electrical energy storage circuit into for harvest energy and after converting electric energy to;
Electrical energy storage circuit, for storage of electrical energy;
Power conversion circuits comprises: solar energy change-over circuit and/or kinetic energy change-over circuit.
Wherein, solar energy change-over circuit comprises: thin-film solar cells and MPPT maximum power point tracking MPPT controller; Kinetic energy change-over circuit comprises: piezoelectic oscillatory sheet and rectifier circuit.
Wherein, the shape of thin-film solar cells is consistent with the appearance and modeling of electronic equipment, and thin-film solar cells is attached on the outer surface of electronic equipment.
Wherein, the battery in piezoelectic oscillatory sheet and main power circuit is separately positioned on the two ends of electronic equipment, and wherein, the one end that is provided with piezoelectic oscillatory sheet is can be flexibly bending, the one end that is provided with main power circuit battery bending of can shaping.
Wherein, electrical energy storage circuit comprises capacitor.
According to another aspect of the present invention, provide a kind of electronic equipment, this electronic equipment comprises the power supply circuits as one aspect of the invention.
According to a further aspect of the invention, provide a kind of method of supplying power to of electronic equipment, the method comprises: harvest energy and convert electric energy to after store in auxiliary power circuit;
Monitor the voltage of auxiliary power circuit;
In the time that the voltage of auxiliary power circuit reaches the first preset value, the working power circuit of electronic equipment is switched to auxiliary power circuit; When the voltage of auxiliary power circuit is during lower than the second preset value, the working power circuit of electronic equipment is switched to main power circuit; Wherein, the first preset value is greater than the second preset value.
Wherein, harvest energy and convert electric energy to after store auxiliary power circuit into and comprise: after collecting solar energy and convert solar energy to electric energy by solar energy change-over circuit, store in auxiliary power circuit; And/or, after collecting kinetic energy and convert kinetic energy to electric energy by kinetic energy change-over circuit, store in auxiliary power circuit.
Wherein, described solar energy change-over circuit comprises: thin-film solar cells and MPPT maximum power point tracking MPPT controller; Described kinetic energy change-over circuit comprises: piezoelectic oscillatory sheet and rectifier circuit;
The shape of thin-film solar cells is arranged to the shape consistent with the appearance and modeling of electronic equipment, and thin-film solar cells is attached on the outer surface of electronic equipment, after collecting solar energy and converting solar energy to electric energy, store in auxiliary power circuit; The battery of piezoelectic oscillatory sheet and main power circuit is separately positioned on to the two ends of electronic equipment, wherein, the one end that is provided with piezoelectic oscillatory sheet can be bending flexibly, the one end that is provided with main power circuit battery bending of can shaping is stored in auxiliary power circuit after collecting kinetic energy and converting kinetic energy to electric energy.
The invention provides a kind of multi-source power supply technique scheme that is applied to electronic equipment, there is multiple feed circuit solar powered and/or piezoelectric vibration power supply and traditional lithium battery power supply, this power supply circuits of the present invention and method of supplying power to can at utmost extend the continuation of the journey operating time of electronic equipment, promote user and experience.And, adopt solar energy and/or piezoelectric vibration as supplementary energy, also there is energy clean environment firendly, long-lived advantage.Meanwhile, the present invention also provides a kind of electronic equipment that comprises one aspect of the invention power supply circuits, and this electronic equipment is owing to having comprised power supply circuits of the present invention, thereby it is long also to possess cruising time, can bring the advantages such as the good experience of user.
Brief description of the drawings
Fig. 1 is the schematic diagram of the electronic device power supply circuit that provides of one embodiment of the invention;
The structure chart of the electronic device power supply circuit that Fig. 2 one embodiment of the invention provides;
Fig. 3 is logic switching flow figure between the one embodiment of the invention solar energy, kinetic energy and the lithium battery that provide;
Fig. 4 is the structured flowchart of the electronic device power supply circuit that provides of another embodiment of the present invention;
Fig. 5 is the block diagram of the wearable electronic equipment that provides of one embodiment of the invention;
Fig. 6 is the flow chart of the electronic equipment method of supplying power to that provides of one embodiment of the invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Core concept of the present invention is to adopt solar energy and/or piezoelectric vibration can serve as supplementary energy, energy to microwatt and milliwatt level is collected, to after the power conversion of collection, be stored in the auxiliary power supplys such as farad capacitor, utilize auxiliary power supply to power to electronic equipment, reach the electric weight of saving main power source (being generally lithium battery), avoid main power source (being generally lithium battery) frequent charge, the object of larger peak current is provided for load again simultaneously.Monitor the voltage that is collected in auxiliary power supply by electric voltage observation circuit, and in the time that voltage arrives programmable threshold, the main control chip of electronic device, thereby main control chip switches power supply circuits according to notification signal, use auxiliary power supply to power, as long as auxiliary power supply meets and preferentially in the situation of certain time length power supply capacity uses auxiliary Power supply, reduce the use of main power source, farthest extend standby and continuation of the journey operating time of complete machine with this.Wherein auxiliary power supply is also a kind of chargeable device, and its charging times exceeds much compared to lithium battery, is preferably capacitor, and for example farad capacitor can regard unlimited as compared to the charging times of lithium battery.
Fig. 1 is the schematic diagram of the electronic device power supply circuit that provides of one embodiment of the invention; Referring to Fig. 1, these power supply circuits 100 comprise: main power circuit 110, auxiliary power circuit 130, electric voltage observation circuit 140 and control circuit 150;
Auxiliary power circuit 130, stores for harvest energy and after converting electric energy to;
Electric voltage observation circuit 140, for monitoring the voltage of auxiliary power circuit 130, in the time that reaching the first preset value, the voltage of auxiliary power circuit 130 sends the first notification signal to control circuit 150, when the voltage of auxiliary power circuit sends the second notification signal to control circuit 150 during lower than the second preset value; Wherein, the first preset value is greater than the second preset value;
Control circuit 150, in the time receiving the first notification signal, switches to auxiliary power circuit 130 by the working power of electronic equipment, in the time receiving the second notification signal, the working power of electronic equipment is switched to main power circuit 110.
Wherein, auxiliary power circuit 130 comprises: power conversion circuits and electrical energy storage circuit; Power conversion circuits, stores electrical energy storage circuit into for harvest energy and after converting electric energy to; Electrical energy storage circuit, for storage of electrical energy; Power conversion circuits comprises: solar energy change-over circuit and/or kinetic energy change-over circuit.
Wherein, solar energy change-over circuit comprises: thin-film solar cells and MPPT maximum power point tracking MPPT controller; The shape of thin-film solar cells is consistent with the appearance and modeling of electronic equipment, and thin-film solar cells is attached on the outer surface of electronic equipment.
Wherein, kinetic energy change-over circuit comprises: piezoelectic oscillatory sheet and rectifier circuit.Battery (being generally chargeable lithium cell) in piezoelectic oscillatory sheet and main power circuit 110 is separately positioned on the two ends of electronic equipment, wherein, the one end that is provided with piezoelectic oscillatory sheet in the two ends of electronic equipment is can be flexibly bending, the one end that is provided with the battery of main power circuit bending of can shaping.
Wherein, electrical energy storage circuit comprises capacitor.
In the present embodiment, control circuit 150 can be the main control chip of electronic equipment, the notification signal that main control chip receiver voltage electrical measurement circuit sends, and carry out the switching of power supply circuits according to this notification signal.
The power supply circuits of electronic equipment in the present embodiment, are converted to solar energy and kinetic energy the auxiliary power supply technology of electric energy, make electronic equipment not need to use powered battery always, have saved the electric weight of battery.State in the case of user in sunny or motion, can also after conversion, store in capacitor by harvest energy, in the time that the magnitude of voltage in capacitor reaches the first preset value (default powered threshold values), the working power of electronic equipment is switched to auxiliary power supply (energy-storage travelling wave tube such as such as farad capacitor), thereby utilize accessory power supply to power to electronic equipment.So, both ensure the normal work of electronic equipment, promoted again the flying power of electronic equipment.
Fig. 2 is the structure chart of the electronic device power supply circuit that provides of one embodiment of the invention; Referring to Fig. 2, the structure of the electronic device power supply circuit in one embodiment of the invention is respectively:
The kinetic energy change-over circuit 210 being formed by piezoelectic oscillatory sheet 2101 and rectifier circuit 2102.This kinetic energy change-over circuit 210 is collected kinetic energy in the time that the body part of user's wearable electronic device is kept in motion by piezoelectic oscillatory sheet 2101, and the AC signal of collecting is sent to rectifier circuit 2102, after the AC signal rectification that rectifier circuit 2102 is exported piezoelectic oscillatory sheet 2101, carry out follow-up power conversion processing and output to again in farad capacitor 230.Being appreciated that in the present embodiment how explanation utilizes to collect kinetic energy and be converted to electric energy as an example of oscillation energy example powers.Also can adopt in other embodiments of the invention other forms of kinetic energy, be not limited to the oscillation energy in the present embodiment.Electrical energy storage circuit comprises capacitor in the present embodiment, specifically comprises farad capacitor.
The solar energy change-over circuit 220 being formed by thin-film solar cells 2201 and MPPT maximum power point tracking (Maximum Power Point Tracking is called for short MPPT) controller 2202; MPPT controller can be in the peak power output of detecting real-time solar panel under different illumination intensity, and follow the trail of ceiling voltage current value, system is charged to storage battery (farad capacitor 230 in Fig. 2) with maximum power output, thereby improve the efficiency of collection of energy.Solar energy change-over circuit 220 is collected solar energy and is converted solar energy to electric energy by thin-film solar cells 2201 and outputs to farad capacitor 230.
The main power circuit 110 being formed by adapter 1101, charging management chip 1102 and chargeable lithium cell 1103.Referring to Fig. 2, chargeable lithium cell 1103 is charged to it by power supply adaptor 1101 or USB by independent charging management chip 1102.Charging management chip 1102 belongs to CC-CV charging management chip, for regulating the charging of chargeable lithium cell 1103, need constant current (CC) charging of medium accuracy in the first stage of the charging process of chargeable lithium cell 1103, be transitioned into high accuracy constant voltage (CV) charging in second stage.
Referring to Fig. 2, in the present embodiment, control circuit 150 completes the switching between farad capacitor and lithium battery power supply by disconnection, the closure of two switches.
Fig. 3 is logic switching flow figure between the one embodiment of the invention solar energy, kinetic energy and the lithium battery that provide; Referring to Fig. 3, the logical process switching between concrete solar energy, kinetic energy and lithium battery is as follows:
Step S301, judges whether the current power supply of electronic equipment is oscillation energy, otherwise, be switched to powered battery, be to perform step S303, farad capacitor is charged.
Step S302, judges whether the current power supply of electronic equipment is solar energy, otherwise, be switched to battery feed circuit, be to perform step S303, farad capacitor is charged.
Step S304, judges whether the magnitude of voltage of farad capacitor has reached the first preset value, otherwise execution step S303, continues farad capacitor charging, is to perform step S305, and the working power of electronic equipment is switched to farad capacitor.
Step S306, judges whether the magnitude of voltage of farad capacitor is less than the second preset value, otherwise execution step S307 is, continues execution step S305, uses farad capacitor power supply.
Referring to Fig. 3, between step S301 and step S302, there is no sequencing, can first perform step S301, also can first perform step S302.Because the power supply environment of electronic equipment often can change, thereby this programme utilizes the power supply of different energy to greatest extent according to the variation of the environment power supply circuits that automatically switch.For example, initial condition, electronic equipment uses lithium battery (being main power source) to power.But when user is under outdoor high light condition (or indoor light abundance also can), when thin-film solar cells power output is enough high, can completes fast farad capacitor is charged.Now, execution step S302, judges whether the current power supply source of electronic equipment is solar energy, is that control circuit is switched to solar power supply circuit, uses farad capacitor (being auxiliary power supply) power supply.Electric voltage observation circuit also will be monitored the voltage of farad capacitor simultaneously, when solar energy obtains when dying down and causing farad capacitor voltage drop, as night, when cloudy day or electronic equipment are blocked by coat-sleeve, electronic equipment detects wrist by the acceleration transducer G-Sensor carrying or whether arm is kept in motion, now, execution step S301, judge whether the current power supply source of electronic equipment is oscillation energy, that control circuit is switched to farad capacitor power supply, the supply power voltage of the farad capacitor of electric voltage observation circuit monitoring simultaneously, die down and cause farad capacitor voltage drop when oscillation energy obtains, while remaining static as user, control circuit switches to lithium battery power supply.
In the present embodiment, the flow chart of Fig. 3 is to be converted to and to store farad capacitor or kinetic energy after electric energy into and be converted to and store these two kinds of collection of energy conversions of farad capacitor after electric energy into and select one mode to farad capacitor charging based on solar energy, be appreciated that, in actual applications, when solar energy abundance and user in the residing power supply environment of electronic equipment wear in the situation that (or use) electronic equipment is kept in motion, can after collecting solar energy and oscillation energy simultaneously and being converted to electric energy, charge to farad capacitor.
It should be noted that, the first preset value in the embodiment of the present invention is greater than the second preset value.The voltage of electric voltage observation circuit Real-Time Monitoring farad capacitor, because solar energy change-over circuit or kinetic energy change-over circuit are to have stored in farad capacitor after electric energy by the power conversion of collecting separately, the magnitude of voltage of farad capacitor can raise.In the time that the magnitude of voltage of farad capacitor reaches the first preset value, mean the electric energy of storing in farad capacitor very sufficient can use the electric energy in farad capacitor to power to electronic equipment.According to the scheme of this multi-source power supply of the present invention, in the time using farad capacitor as electronic device works power supply, lithium battery can be backstage accumulation energy (being that the electric energy of storing in lithium battery is not consumed).
Along with the consumption that electronic equipment is powered to electric energy, the magnitude of voltage of farad capacitor can decline.In the time that this magnitude of voltage is reduced to the second preset value, mean that the electric energy in farad capacitor remains little, be not suitable for electronic equipment to power.Electric voltage observation circuit monitors this variation, sends the second notification signal to control circuit, and control circuit receives this second notification signal the working power circuit of electronic equipment is switched to main power circuit, uses lithium battery to power to electronic equipment.And according to the solution of the present invention, using lithium battery when electronic equipment is powered, solar energy and kinetic energy can the backstage of electronic equipment continue accumulation energy (be harvest energy and be converted to electric energy after store in farad capacitor).
Fig. 4 is the structured flowchart of the electronic device power supply circuit that provides of another embodiment of the present invention; Referring to Fig. 4, piezoelectic oscillatory sheet 2101 is collected chip 401 with oscillation energy and is connected, and rectifier circuit 2102 is integrated in oscillation energy and collects in chip 401, and oscillation energy is collected chip 401 and exported electric energy in farad capacitor 230 by output loading 4011.Thin-film solar cells 2201 is connected with solar recharging managing chip 402, MPPT maximum power point tracking MPPT controller 2202 is arranged in solar recharging managing chip 402, and the output loading 4022 of solar recharging managing chip 402 is connected with farad capacitor 230 one end.The other end ground connection of farad capacitor 230.
Wherein, the electric voltage observation circuit 140 shown in Fig. 1 also can be arranged in solar recharging managing chip 402, is monitored the voltage of farad capacitor 230 by voltage electrical measurement circuit 140, and sends notification signal by Voltage Feedback port 4021 to control circuit 150.When the voltage in farad capacitor 230 reaches the first preset value, send the first notification signal to control circuit 150, control circuit 150 receives that to switch current power supply after this first notification signal be farad capacitor; Voltage drop in farad capacitor 230 during to the second preset value, sends the second notification signal to control circuit 150, and control circuit 150 receives that to switch current power supply circuit after this second notification signal be main power circuit.Wherein, the first preset value is greater than the second preset value.
Referring to Fig. 4, this power supply circuits of the present embodiment, electric energy in farad capacitor 230 or main power circuit 110 can also arrange Power Management Unit (PMU) 403 before outputing to control circuit 150, adjust the power supply of the system that is input to electronic equipment by Power Management Unit 403, to reach higher power supply conversion efficiency and more low-power consumption.
Referring to Fig. 4, control circuit 150 completes the power switching between farad capacitor and lithium battery by two-way load switch 404, and the Enable Pin of load switch 404 is controlled by control circuit 150.In the time that the electric energy in farad capacitor 230 is sufficient, control circuit 150 is controlled load switch 404 closures that are connected with farad capacitor 230, disconnects the load switch 404 being connected with main power circuit 110, the working power using farad capacitor 230 as system simultaneously.When the power consumption in farad capacitor 230 is when being less than the second preset value, control circuit 150 disconnects the switch being connected with farad capacitor 230, the closed load switch 404 being connected with main power circuit 110 simultaneously, the working power circuit using main power circuit 110 as electronic equipment.And, control circuit 150 is also powered by one of farad capacitor or lithium battery, therefore in the time that farad capacitor and lithium battery all can not provide energy, control circuit 150 cannot be opened load switch 404, in this case, can by with load switch 404 be connected enable load switch 404 and power and main power circuit 110 is charged to control circuit 150 with serial bus USB interface 405.
Wherein, the control circuit 150 in these power supply circuits can be the main control chip of electronic equipment.And can between control circuit 150 and the Enable Pin of switch, a diode can be set, to protect load and circuit.
From the above, the power supply circuits of the disclosed this electronic equipment of the embodiment of the present invention can be realized multi-source power supply, utilize solar energy and kinetic energy as supplementary energy, energy environment protection, and can farthest extend the operating time of electronic equipment, promote flying power.
Provide according to another aspect of the present invention a kind of electronic equipment, this electronic equipment internal is integrated power supply circuits of one aspect of the invention.Fig. 5 is the block diagram of the electronic equipment that provides of one embodiment of the invention, and referring to Fig. 5, this electronic equipment 500 of the present embodiment has comprised aforesaid power supply circuits 100.The electronic equipment 500 of the present embodiment is that the power supply circuits of aforementioned electronic equipment 100 are applied on wearable electronic equipment.In hardware designs, the shape of thin-film solar cells is designed to the shape consistent with the appearance and modeling of wearable electronic equipment, thin-film solar cells just can be attached on the outer surface of electronic equipment like this.Battery in piezoelectic oscillatory sheet and main power circuit is separately positioned on to the two ends of wearable electronic equipment simultaneously, wherein, the one end that is provided with the wearable electronic equipment of piezoelectic oscillatory sheet is can be flexibly bending, the one end that is provided with the wearable electronic equipment of battery bending of can shaping.
Particularly, solar panel is selected second generation thin film solar cell sheet, thin-film solar cells can be bending flexibly, therefore can integrate with the appearance and modeling of electronic equipment, be attached to the outer surface of whole electronic equipment, thereby farthest increase the effective area of thin-film solar cells absorption luminous energy, wherein, the outer surface of electronic equipment (can be a kind of wearable electronic equipment, such as Intelligent spire lamella, intelligent bracelet, intelligent watch etc.) refers to the opposing face of the side of electronic equipment and the laminating of user's body position; Piezoelectic oscillatory sheet and lithium battery lay respectively at the two ends of electronic equipment; wherein one end belt body part of the electronic equipment at piezoelectic oscillatory sheet place can have flexible bending; the opposite side belt body part at lithium battery place is that sizing is bending, has taken into account like this collection of li-ion cell protection and piezoelectric energy.Bending refers to that piezoelectic oscillatory sheet is agreeing with under the prerequisite of for example intelligent bracelet endless belt of wearable electronic equipment flexibly, also can, according to the attitude and the direction free setting that are conducive to most collection of energy, adjust flexibly as required.Sizing bending refers to, the part that electronic equipment is for example equipped with lithium battery on intelligent bracelet is with the same stationary curved of shape of bracelet, makes troubles can to user's wearable electronic device (as intelligent bracelet).The shape that is appreciated that this electronic equipment 500 in the present embodiment is mainly the wearable electronic equipment of ring-type or class ring-type as intelligent bracelet and intelligent watch etc.In other embodiments of the invention, can, according to the true form of wearable intelligent electronic device, carry out concrete hardware designs in conjunction with power supply circuits of the present invention, this hardware designs that is not limited to provide in the present embodiment.
A kind of method of supplying power to of electronic equipment is also provided according to a further aspect of the invention, and Fig. 6 is the method flow diagram of the electronic equipment power supply that provides of one embodiment of the invention.Referring to Fig. 6, the method comprises:
Step 610, harvest energy and convert electric energy to after store in auxiliary power circuit;
Step 620, monitors the voltage of auxiliary power circuit;
Step 630, in the time that the voltage of auxiliary power circuit reaches the first preset value, switches to auxiliary power circuit by the working power circuit of electronic equipment;
Step 640, when the voltage of auxiliary power circuit is during lower than the second preset value, switches to main power circuit by the working power circuit of electronic equipment; Wherein, the first preset value is greater than the second preset value.
Wherein, step 610 harvest energy and convert electric energy to after store auxiliary power circuit into and comprise: after collecting solar energy and convert solar energy to electric energy by solar energy change-over circuit, store in auxiliary power circuit; And/or, after collecting kinetic energy (being the kinetic energy of the time generations such as electronic equipment is rocked) and convert kinetic energy to electric energy by kinetic energy change-over circuit, store in auxiliary power circuit.
Solar energy change-over circuit comprises: thin-film solar cells and MPPT maximum power point tracking MPPT controller; Kinetic energy change-over circuit comprises: piezoelectic oscillatory sheet and rectifier circuit;
Wherein, the shape of thin-film solar cells is arranged to the shape consistent with the appearance and modeling of electronic equipment, and thin-film solar cells is attached on the outer surface of electronic equipment, after collecting solar energy and converting solar energy to electric energy, store in auxiliary power circuit; The battery of piezoelectic oscillatory sheet and main power circuit is separately positioned on to the two ends of electronic equipment, wherein, the one end that is provided with piezoelectic oscillatory sheet can be bending flexibly, the one end that is provided with the battery of main power circuit bending of can shaping is stored in auxiliary power circuit after collecting kinetic energy and converting kinetic energy to electric energy.
Be appreciated that the realization flow of this method of supplying power to and the course of work of aforementioned electronic equipment power supply circuits that the present embodiment provides are similar, the detailed process that method of supplying power to is realized, referring to the explanation of aforementioned power supply circuits part, is not repeating herein.
Technical scheme of the present invention has realized the multi-source power supply of electronic equipment, and can accumulate the faint energy of microwatt level, thereby extends to the full extent the continuation of the journey operating time of electronic equipment.Compare with conventional art scheme, technical scheme of the present invention has following clear superiority:
1, electronic equipment (as intelligent watch etc.) causes solar energy to be collected becoming difficulty than being easier to be blocked by user's coat-sleeve, in this case, according to the solution of the present invention, the working power of electronic equipment can be switched to oscillation energy or lithium battery power supply, utilize in the place of illumination deficiency simultaneously MPPT controller can also continue to collect milliwatt level even microwatt level solar energy and store in farad capacitor.The power supply circuits that the invention provides thus multi-source power supply, promote the flying power of electronic equipment greatly.
2, collect solar energy and oscillation energy and convert power storage in the auxiliary power circuits such as farad capacitor, after farad capacitor is full of electricity (voltage reaches the first preset value), can be directly provide even peak current when bluetooth work of standby current for electronic equipment.
3, utilize the energy storage function of farad capacitor, cause solar energy or oscillation energy to change or when fluctuation, also can not cause the unexpected power down of electronic equipment when the variation of electronic apparatus application environment, the user of impact uses.
4, the farad capacitor that the embodiment of the present invention is used is again buffer Buffer electric capacity simultaneously, the peak current demand can meet intelligent wireless radio frequency RF transmitting time.
5, compare as the working power of electronic equipment with single use chargeable lithium cell or button cell in prior art, discharge and recharge frequently and cause the life-span of battery to be reduced.And technical scheme of the present invention by collect stored energy in the auxiliary power circuits such as farad capacitor, due to farad capacitor discharge and recharge number of times can think unlimited, therefore, the inconvenience that the present invention has avoided frequent replacing battery to bring to user has reduced use cost simultaneously.
These are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.All any amendments of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., be all included in protection scope of the present invention.

Claims (10)

1. power supply circuits for electronic equipment, is characterized in that, described power supply circuits comprise: electric voltage observation circuit, control circuit, auxiliary power circuit and comprise the main power circuit of battery;
Described auxiliary power circuit, stores for harvest energy and after converting electric energy to;
Described electric voltage observation circuit, for monitoring the voltage of described auxiliary power circuit, in the time that reaching the first preset value, the voltage of described auxiliary power circuit sends the first notification signal to described control circuit, when the voltage of described auxiliary power circuit sends the second notification signal to described control circuit during lower than the second preset value; Wherein, the first preset value is greater than the second preset value;
Described control circuit, for in the time receiving described the first notification signal, the working power circuit of described electronic equipment is switched to described auxiliary power circuit, in the time receiving described the second notification signal, the working power circuit of described electronic equipment is switched to described main power circuit.
2. power supply circuits as claimed in claim 1, is characterized in that, described auxiliary power circuit comprises: power conversion circuits and electrical energy storage circuit;
Described power conversion circuits, stores electrical energy storage circuit into for harvest energy and after converting electric energy to;
Described electrical energy storage circuit, for storage of electrical energy;
Described power conversion circuits comprises: solar energy change-over circuit and/or kinetic energy change-over circuit.
3. power supply circuits as claimed in claim 2, is characterized in that,
Described solar energy change-over circuit comprises: thin-film solar cells and MPPT maximum power point tracking MPPT controller;
Described kinetic energy change-over circuit comprises: piezoelectic oscillatory sheet and rectifier circuit.
4. power supply circuits as claimed in claim 3, is characterized in that, the shape of described thin-film solar cells is consistent with the appearance and modeling of described electronic equipment, and described thin-film solar cells is attached on the outer surface of described electronic equipment.
5. power supply circuits as claimed in claim 3, it is characterized in that, battery in described piezoelectic oscillatory sheet and described main power circuit is separately positioned on the two ends of described electronic equipment, wherein, the one end that is provided with piezoelectic oscillatory sheet is can be flexibly bending, the one end that is provided with main power circuit battery bending of can shaping.
6. power supply circuits as claimed in claim 2, is characterized in that, described electrical energy storage circuit comprises capacitor.
7. an electronic equipment, is characterized in that, described electronic equipment comprises the power supply circuits as described in any one in claim 1-6.
8. a method of supplying power to for electronic equipment, is characterized in that, described method comprises:
Harvest energy and convert electric energy to after store in auxiliary power circuit;
Monitor the voltage of described auxiliary power circuit;
In the time that the voltage of auxiliary power circuit reaches the first preset value, the working power circuit of described electronic equipment is switched to described auxiliary power circuit; When the voltage of auxiliary power circuit is during lower than the second preset value, the working power circuit of described electronic equipment is switched to the battery in main power circuit; Wherein, the first preset value is greater than the second preset value.
9. method of supplying power to as claimed in claim 8, is characterized in that, described harvest energy and convert electric energy to after store auxiliary power circuit into and comprise:
After collecting solar energy and convert described solar energy to electric energy by solar energy change-over circuit, store in auxiliary power circuit;
And/or,
After collecting kinetic energy and convert described kinetic energy to electric energy by kinetic energy change-over circuit, store in auxiliary power circuit.
10. method of supplying power to as claimed in claim 9, is characterized in that,
Described solar energy change-over circuit comprises: thin-film solar cells and MPPT maximum power point tracking MPPT controller; Described kinetic energy change-over circuit comprises: piezoelectic oscillatory sheet and rectifier circuit;
Wherein, the shape of thin-film solar cells is arranged to the shape consistent with the appearance and modeling of described electronic equipment, and thin-film solar cells is attached on the outer surface of described electronic equipment, after collecting solar energy and converting described solar energy to electric energy, store in auxiliary power circuit;
The battery of piezoelectic oscillatory sheet and described main power circuit is separately positioned on to the two ends of described electronic equipment, wherein, the one end that is provided with piezoelectic oscillatory sheet can be bending flexibly, the one end that is provided with main power circuit battery bending of can shaping is stored in auxiliary power circuit after collecting kinetic energy and converting described kinetic energy to electric energy.
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