CN202872455U - Solar smart home supply power system - Google Patents

Solar smart home supply power system Download PDF

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Publication number
CN202872455U
CN202872455U CN2012204991014U CN201220499101U CN202872455U CN 202872455 U CN202872455 U CN 202872455U CN 2012204991014 U CN2012204991014 U CN 2012204991014U CN 201220499101 U CN201220499101 U CN 201220499101U CN 202872455 U CN202872455 U CN 202872455U
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CN
China
Prior art keywords
circuit
storage battery
power system
inverter
electric power
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Expired - Fee Related
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CN2012204991014U
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Chinese (zh)
Inventor
李斌
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Chongqing Beicang Optoelectronics Technology Co Ltd
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Chongqing Beicang Optoelectronics Technology Co Ltd
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Priority to CN2012204991014U priority Critical patent/CN202872455U/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/10—Photovoltaic [PV]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The utility model relates to a solar smart home supply power system. An MCU controller automatically controls a solar panel of the solar smart home supply power system and enables the solar panel to charge a storage battery. When electric utilization power of a user is smaller than 180W, after the current in the storage battery is inverted to 220V alternating current through an inverter, the storage battery supplies power for the user; when the electricity in the storage battery is insufficient or the electric utilization power of the user is larger than 180W, a switcher automatically switches on a 220V-alternating current mains electricity supply so as to supply power until the voltage of the storage battery returns to a normal state or the electric utilization power is smaller than 180W; and then, the storage battery is switched on again to supply power. The solar smart home supply power system of the utility model has the advantages of intelligent automatic control, perfect protection function and the like.

Description

Solar energy intelligent household electric power system
Technical field
The utility model relates to solar power supply apparatus, particularly a kind of solar energy intelligent household electric power system.
Background technology
At present, solar powered product on the market mostly adopts and will charge a battery after the solar energy conversion, then after being reverse into the 220V alternating current, directly give electrical equipment independently-powered, such as the disclosed Chinese utility model patent of CN202260549U (patent name: a kind of domestic solar electric power system), namely adopt technique scheme, the following defective of this scheme:
1. switching manipulation needs manual control;
2. defencive function is perfect not, and after the protections such as overvoltage, under-voltage, overcurrent, short circuit, electric power supply disconnects, and can automatically not recover, and needs manually control;
3. the user uses the impact that is subjected to solar electric power supply system power, and the electric power that surpasses solar electric power supply system can't use.It is very inconvenient that this will cause the user to use.
The utility model content
The purpose of this utility model is to provide a kind of intellectuality, adaptable solar energy household electric power system.
The purpose of this utility model is achieved through the following channels: a kind of solar energy intelligent household electric power system, it comprises solar panel, storage battery, MCU controller and inverter, solar panel connects storage battery through charging control circuit, storage battery connects load through inverter, be provided with between described inverter and the load and exchange/the inversion commutation circuit, other has 220V alternating current input incoming transport/inversion commutation circuit, and the MCU controller connects control described interchange/inversion commutation circuit and is installed in inversion testing circuit and output current detection circuit on the electric current outlet line.
As the further optimization of scheme, described output current detection circuit is connected with current sensor in interchange/inversion commutation circuit output, and this current sensor is connected with the MCU controller.
As the further optimization of scheme, described charging control circuit is PWM pulse-width modulation charging circuit.
Further optimization as scheme is connected with inverter control circuit on the described inverter, and this circuit is to be connected in the MCU controller by triode Q14 and field effect transistor Q11, and field effect transistor Q11 output has resistance R 35 to be connected in the MCU controller.
As the further optimization of scheme, be connected with LCD display circuit, key control circuit, buzzer alarm circuit and expansion interface on the described MCU controller.
Further optimization as scheme is equipped with accumulator voltage detecting circuit on the described storage battery, and this circuit is at the battery current output resistance R 42 to be installed to be connected with resistance R and to connect the MCU controller.
As the further optimization of scheme, the loop between described solar panel and the storage battery is provided with the TVS pipe.
Further optimization as scheme is connected with photoelectric sampler between described solar panel and the storage battery.
The utility model solar energy intelligent household electric power system is comprised of solar panel, storage battery, MCU controller, inverter, transducer etc.; Solar panel is automatically controlled by the MCU controller and is charged a battery.When user power utilization power during less than 180W; after being the 220V alternating current, the inverter inversion gives customer power supply by storage battery; when storage battery quantity not sufficient or user power utilization power during greater than 180W; switch automatically switches to the power supply of 220V electric main; until battery tension recovers normal or electric power less than 180W after, again switch to storage battery power supply.
The utility model solar energy intelligent household electric power system has following features:
1. use single-chip microcomputer and control software, realized Based Intelligent Control, automatically come the switch operating state according to electric weight and the user power utilization situation of storage battery.
2. simple to operate, by MCU controller Automatic Control various actions, overwhelming majority operation does not need human intervention.
3. have overcharge of a battery, overdischarge, open a way, connect anti-protection.
4. have solar panel and connect anti-protection, load short circuits, overload protection, and above protection all do not damage any components and parts, do not burn insurance.
5. adopted tandem PWM charging main circuit, made the loss of voltage of charge circuit use the charging circuit of diode to reduce half, the high 3%--6% of the more non-PWM of charge efficiency has increased the electricity consumption time.
6. LCD display intuitively shows current operating state, allows the user is clear to understand current operating position.
Compare with existing solar powered product, the utility model solar energy intelligent household electric power system has following several advantages:
1. native system has used single-chip microcomputer and control software, has realized Based Intelligent Control, automatically comes switch operating state (inversion or civil power) according to electric weight and the user power utilization situation of storage battery by MCU.Automatically control various actions, overwhelming majority operation does not need human intervention.
2. defencive function is perfect; have the protections such as overvoltage, under-voltage, overcurrent, short circuit; and when the phenomenons such as overvoltage, under-voltage, overcurrent appear in storage battery; power supply automatically switches to the power supply of 220V electric main; do not affect the user and normally make electrical appliance; and behind Failure elimination, reach when starting the inversion condition, power supply is storage battery inversion power supply by 220V electric main power switching again automatically.
3. after user power utilization surpasses the storage battery inverter power, then automatically switch to the power supply of 220V electric main, be lower than the storage battery inverter power after, then automatically switch to again storage battery inversion power supply, this just can not cause customer power supply to interrupt.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in further detail:
Fig. 1 is the utility model circuit block diagram;
Fig. 2 is circuit diagram of the present utility model;
Among the figure, inversion testing circuit 1, power-supplying circuit 2, interchange/inversion commutation circuit 3, output current detection circuit 4, LCD display circuit 5, charging control circuit 6, inverter control circuit 7, accumulator voltage detecting circuit 8, key control circuit 9, MCU controller 10, buzzer alarm circuit 11, expansion interface 12, solar panel 21,220V alternating current input 22, load 23, inverter 24, storage battery 25, current sensor 26, TVS pipe 27, photoelectric sampler 28.
Embodiment
Such as Fig. 1, shown in Figure 2, the utility model solar energy intelligent household electric power system, it comprises existing solar panel 21 in the prior art, storage battery 25, MCU controller 10 and inverter 24, solar panel 21 connects storage battery 25 through charging control circuit 6, storage battery 25 connects load 23 through inverter 24, in this patent, be provided with between described inverter 24 and the load 23 and exchange/inversion commutation circuit 3, other has the 220V alternating current to input 22 incoming transports/inversion commutation circuit 3, and MCU controller 10 connects control described interchange/inversion commutation circuits 3 and is installed in inversion testing circuit 1 and output current detection circuit 4 on the electric current outlet line.Described output current detection circuit 4 is connected with current sensor 26 in interchange/inversion commutation circuit 3 outputs.Be connected with photoelectric sampler 28 between described solar panel 21 and the storage battery 25.Described charging control circuit 6 is PWM pulse-width modulation charging circuit.Be connected with inverter control circuit 7 on the described inverter 24; this circuit is to be connected in MCU controller 10 by triode Q14 and field effect transistor Q11; break-make by triode Q14 and field effect transistor Q11 realizes control; field effect transistor Q11 output has resistance R 35 to be connected in MCU controller 10; with the detection of realization field effect transistor Q11 electric current, and reach the purpose of protecting inverter or its associated components.On the described storage battery 25 accumulator voltage detecting circuit 8 is installed, this circuit is at storage battery 25 current output terminals resistance R 42 to be installed to be connected with resistance R and to connect MCU controller 10.Be connected with LCD display circuit 5, key control circuit 9, buzzer alarm circuit 11 and expansion interface 12 on the described MCU controller 10.
The below describes related circuit in the utility model solar energy intelligent household electric power system in detail:
Inversion testing circuit 1, this circuit adopts the voltage step-down after the inversion, rectification, and by after the light-coupled isolation, becomes control signal, sends in the MCU controller 10, after analyzing, process for process chip U1, interlock circuit is made control.Loop between described solar panel 21 and the storage battery 25 is provided with TVS pipe 27, avoids the damage of surge voltage in order to each electronic devices and components on the protection circuit.
Inverter output voltage is through diode D1 rectification; C1 filtering; send into 1 of isolation optocoupler U4 after R67 and the R69 step-down; 2 pin; 3 of U4; 4 pin will be according to 1; the height of 2 pin input voltages and control the conducting state of triode Q16 and Q8; thereby 38 pin of the process chip U1 in the control MCU controller 10; U1 judges according to the voltage condition of its 38 pin whether inverter output voltage is normal again; if normal; then keep customer power supply to continue as the inversion power supply; if unusual; then customer power supply is switched to the power supply of 220V electric main, to keep customer power supply not interrupt and to protect consumer electronics equipment (electric equipment can not cause damage because inverter output voltage is unusual)
Power-supplying circuit 2, the power supply of whole circuit board is adopted battery tension is powered after the two-stage voltage stabilizing, to guarantee the stable of each circuit supply.
Interchange/inversion commutation circuit 3, this partial circuit are used for switching the mode (being to power after the inverter inversion by the power supply of 220V electric main or by storage battery) of customer power supply.By the operating state of U1 according to its peripheral each circuit, come by its 37 pin, process triode Q4, Q5 and Q2 come the operating state (being in inversion or city's electric position) of control relay J1 again.During circuit working, U1 in the MCU controller 10 detects the battery tension of accumulator voltage detecting circuit 8 outputs and the inverter voltage signal that 38 pin detect 1 output of inversion testing circuit by over-current signal, 2 pin that its 1 pin detects inverter control circuit 7 outputs, judge whether to reach the condition that switches to inversion power supply or switch to the electric main power supply by Internal Control Procedure and (without overcurrent and battery tension is normal and inverter voltage when normal, then switch to the inversion power supply; There are over-current phenomenon avoidance or storage battery to force down or inverter voltage when undesired, then switch to the electric main power supply.Its 37 pin is then exported corresponding control signal, and (when 37 pin of U1 were exported high level, triode Q4, Q5 ended to do corresponding the switching by triode Q4, Q5 and Q2 control relay J1, the Q2 conducting, relay J 1 adhesive, the normally opened contact of output engage relay J1 is output as inversion output; During 37 pin output low level, triode Q4, Q5 conducting, the Q2 cut-off, relay J 1 disconnects, and the normally-closed contact of output engage relay J1 is output as electric main output.
Output current detection circuit 4, this partial circuit is for detection of the customer power supply electric current.Current transformer L1 detects the user power utilization state, current transformer will be according to the user power utilization situation, the electric current that changes in output, again this current transitions is become 3 pin that are input to U1 behind the voltage, U1 judges user's electricity consumption situation (electric power) according to the voltage condition of its 3 pin, control the break-make of inversion field effect transistor Q11 and the operating state of transfer relay J1 (being in inversion or city's electric position) according to electric power again, when surpassing the inverter maximum power, user power utilization automatically switches to civil power, then automatically switch to inversion output in the time of within the inverter maximum power, when the user closes not electricity consumption of electrical equipment, then automatically transfer again civil power to, when avoiding not electricity consumption of user, the inverter zero load battery consumption electric energy that works long hours.Current transformer L1 detects output current in real time, and pass through D2, R25, C25 transfers current signal to voltage signal, pass through again R26, R3, R28, after the R36 step-down, be input to 3 pin of the process chip U1 in the MCU controller 10, U1 judges the appliance power that the user uses according to the voltage condition of 3 pin again, again according to electric power, 37 pin of U1 will be exported corresponding control signal, relay J 1 in the control circuit 3 is done corresponding the switching (if when electric power is closed all electrical equipment less than 2W or greater than 180W or user, the 37 pin output low levels of U1, control relay J1 disconnects, and switches on electric main output; If electric power is during greater than 3W and less than 180W, 37 pin of U1 output high level then, control relay J1 adhesive switches on inversion output)
LCD display circuit 5; the various operating states of display device and parameters (battery electric quantity, charge, be full of, the demonstration such as under-voltage, overvoltage, protection, civil power, inversion, time, date); allow the user can understand at any time the machine operation conditions, the convenient use.
Charging control circuit 6, this partial circuit are used for the control solar panel to charge in batteries.When the voltage that detects solar panel output by photoelectric sampler 28 is higher than battery tension, the 5 pin output control high voltage of U1, behind triode Q10, Q9, charging is opened in control field effect transistor Q6 and Q7 conducting.And the charging control mode is the PWM pulse-width modulation, and along with the rising of battery tension, 5 pin of U1 will be exported the square wave of different duty, to adjust the duty ratio of field effect transistor, improves charge characteristic, allows charge in batteries reach fully saturated; If the solar panel output voltage is lower than battery tension or storage battery when being full of, the 5 pin output control low-voltage of U1, behind triode Q10, Q9, control field effect transistor Q6 and Q7 cut-off, charge closing is with the protection storage battery.
Inverter control circuit 7, this partial circuit is used for the operating state of control inverter.U1 determines whether to reach when starting inversion or closing the inversion condition according to the working condition of its peripheral each circuit, then by 1 pin of U1, exports control voltage, and behind triode Q14, control field effect transistor Q11 conducting or cut-off are to start inversion or to close inversion.And 1 pin of U1 detects the DS terminal voltage of field effect transistor Q11 at any time by resistance R 35, and judges whether to exist over-current phenomenon avoidance according to its magnitude of voltage, if there is overcurrent, then controls field effect transistor Q11 cut-off, is not damaged with protection inverter or its associated components.
Accumulator voltage detecting circuit 8, this partial circuit is for detection of the cell voltage of storage battery.The storage battery output voltage is after R42 and R49 dividing potential drop; be input to 2 pin of U1; U1 detects the voltage of its 2 pin in real time; judge the electric weight situation of storage battery by the voltage condition of 2 pin; control again the working condition of its interlock circuit according to this electric weight situation; to prevent overcharge of a battery or overdischarge, with the protection storage battery.
Key control circuit 9, this partial circuit are used for the Function Extension of system is made simple control and adjustment.By button, the user can regulate or the time and date of control system, open or close timer, adjust timing, unusual inversion startup after producing restarting after the protection, 220V electric main and having a power failure etc. appears in system.
MCU controller 10, the control process chip (U1) in the outer reason of the control circuit is the core component of system, every control of whole system all thus chip finish.Store control program and every data that system needs in the chip, the data that chip produces according to its peripheral each circuit working in real time, data with its internal reservoir are compared the school, automatically control each peripheral circuit, each circuit is moved according to the mode that program sets, reach Based Intelligent Control, to be user-friendly to.
U1 the 1st pin in the MCU controller 10 both had been the inversion control pin, and also for over-current signal detects pin, the operating state that this pin is set by software decides its function.When 1 pin being set when drawing output on strong, it then is the inversion control pin.When this pin output high level, inversion is closed in triode Q14 conducting, field effect transistor Q11 cut-off; During this pin output low level, inversion is opened in triode Q14 cut-off, field effect transistor Q11 conducting.After opening inversion, software Lookup protocol 1 pin is for opening Lou input, and opens the AD measuring ability of 1 pin, 1 pin Non voltage output then, but triode Q14 is because of its base stage no-voltage, and then still cut-off, still conducting of field effect transistor Q11 continues to keep inverter mode.In inversion when work,, being on the scene effect pipe DS end will produce a faint voltage signal (less than 0.5V, on the operating state of triode Q14 without affecting), and along with the increasing of inverter electric power, this voltage will raise gradually.This voltage is input to 1 pin of U1 by the R35 current limliting, and U1 is by detecting the voltage of its 1 pin, judges whether overcurrent (field effect transistor overcurrent then represent inverter surpasses use power or inverter operation irregularity) of field effect transistor work.If during overcurrent, 37 pin of U1 output low level immediately then, the relay J 1 in the interchange/inversion commutation circuit 3 switches on the electric main power supply state, and 1 pin of U1 transfers Qiang Shangla output immediately to, the output high level, inversion is closed in control triode Q14 conducting, field effect transistor Q11 cut-off.Be not damaged thereby reach protection inverter or relevant components and parts, and make the power supply of consumer electronics unaffected.
Buzzer alarm circuit 11; this partial circuit be used for to imposing a condition of system reach (as alarm clock, timer time to etc.) or unusual condition (cell voltage is excessively low, superpressure, overcurrent protection, storage battery connect anti-etc. when system connected) occurs and make the chimes of doom prompting, with call user's attention.
During circuit working, the 17 pin output alarm control signals of U1, diode D12 and the conducting of D15 positively biased, the anti-partially cut-off of D13 and D14, buzzer sounding.When the user connects inverse time with storage battery, diode D13 and the conducting of D14 positively biased, the anti-partially cut-off of D12 and D15, the buzzer sounding, the prompting user storage battery connects instead, and storage battery connect anti-after, the anti-partially cut-off of field effect transistor Q11 in the circuit 7, battery feed can not consist of the loop, and circuit is not worked, and this just can not damage components and parts.
Expansion interface 12, this interface are used for the user and protect the exhibition systemic-function.As: by the setting to system timer, the mains switch line of the electrical equipment (such as electric light, television set, electric fan etc.) that the user need to be controlled is connected on the socket CN8, can realize the timing automatic open and close of electrical equipment, to be user-friendly to.

Claims (8)

1. solar energy intelligent household electric power system, it comprises solar panel (21), storage battery (25), MCU controller (10) and inverter (24), solar panel (21) connects storage battery (25) through charging control circuit (6), storage battery (25) connects load (23) through inverter (24), it is characterized in that: be provided with between described inverter (24) and the load (23) and exchange/inversion commutation circuit (3), other has 220V alternating current input (22) incoming transport/inversion commutation circuit (3), and MCU controller (10) connects control described interchange/inversion commutation circuit (3) and is installed in inversion testing circuit (1) and output current detection circuit (4) on the electric current outlet line.
2. solar energy intelligent household electric power system as claimed in claim 1, it is characterized in that: described output current detection circuit (4) is connected with current sensor (26) in interchange/inversion commutation circuit (3) output, and this current sensor (26) is connected with MCU controller (10).
3. solar energy intelligent household electric power system as claimed in claim 1, it is characterized in that: described charging control circuit (6) is PWM pulse-width modulation charging circuit.
4. solar energy intelligent household electric power system as claimed in claim 1, it is characterized in that: be connected with inverter control circuit (7) on the described inverter (24), this circuit is to be connected in MCU controller (10) by triode Q14 and field effect transistor Q11, and field effect transistor Q11 output has resistance R 35 to be connected in MCU controller (10).
5. solar energy intelligent household electric power system as claimed in claim 1 or 2 is characterized in that: be connected with LCD display circuit (5), key control circuit (9), buzzer alarm circuit (11) and expansion interface (12) on the described MCU controller (10).
6. solar energy intelligent household electric power system as claimed in claim 1, it is characterized in that: accumulator voltage detecting circuit (8) is installed on the described storage battery (25), and this circuit is at storage battery (25) current output terminal resistance R 42 to be installed to be connected with resistance R and to connect MCU controller (10).
7. solar energy intelligent household electric power system as claimed in claim 1 is characterized in that: the loop between described solar panel (21) and the storage battery (25) is provided with TVS pipe (27).
8. such as claim 1 or 7 described solar energy intelligent household electric power systems, it is characterized in that: be connected with photoelectric sampler (28) between described solar panel (21) and the storage battery (25).
CN2012204991014U 2012-09-28 2012-09-28 Solar smart home supply power system Expired - Fee Related CN202872455U (en)

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Application Number Priority Date Filing Date Title
CN2012204991014U CN202872455U (en) 2012-09-28 2012-09-28 Solar smart home supply power system

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Application Number Priority Date Filing Date Title
CN2012204991014U CN202872455U (en) 2012-09-28 2012-09-28 Solar smart home supply power system

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102832701A (en) * 2012-09-28 2012-12-19 重庆市贝仓光电科技有限公司 Solar intelligent household power supply system
CN104218627A (en) * 2013-05-31 2014-12-17 深圳市海洋王照明工程有限公司 A charge-discharge circuit based on a lifting work light
CN104454302A (en) * 2014-11-05 2015-03-25 武汉包尼喜科技有限公司 High-rise rainwater collection device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102832701A (en) * 2012-09-28 2012-12-19 重庆市贝仓光电科技有限公司 Solar intelligent household power supply system
CN104218627A (en) * 2013-05-31 2014-12-17 深圳市海洋王照明工程有限公司 A charge-discharge circuit based on a lifting work light
CN104218627B (en) * 2013-05-31 2016-05-18 深圳市海洋王照明工程有限公司 Based on the charge-discharge circuit of lifting work lamp
CN104454302A (en) * 2014-11-05 2015-03-25 武汉包尼喜科技有限公司 High-rise rainwater collection device

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C17 Cessation of patent right
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Granted publication date: 20130410

Termination date: 20130928