CN100337081C - Photovoltaic driving refrigerating unit and control method thereof - Google Patents
Photovoltaic driving refrigerating unit and control method thereof Download PDFInfo
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- CN100337081C CN100337081C CNB2003101176188A CN200310117618A CN100337081C CN 100337081 C CN100337081 C CN 100337081C CN B2003101176188 A CNB2003101176188 A CN B2003101176188A CN 200310117618 A CN200310117618 A CN 200310117618A CN 100337081 C CN100337081 C CN 100337081C
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- power supply
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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Abstract
The present invention discloses a photovoltaic driving refrigeration device which comprises a refrigerator provided with a direct current compressor, and a solar battery for providing direct current power supply for the refrigerator. The photovoltaic driving refrigeration device is characterized in that the photovoltaic driving refrigeration device also comprises a storage battery and a controller connected in parallel with the refrigerator, the solar battery and the storage battery. A storage battery charging circuit, a compressor power supply circuit and a first switcher selectively switched on one of the two circuits are arranged in the controller, and a microprocessor of the controller controls the operation of the first switcher according to input signals. The control method of the device comprises the steps that the microprocessor of the controller determines whether a compressor operates or not according to the set temperature and an actually measured temperature of the refrigeration device and outputs signals for control. If the microprocessor determines that the compressor needs to operate, the step of power supply by the compressor is carried out; otherwise, the step of battery charging is carried out. The photovoltaic driving refrigeration device which has the advantages of energy saving, environmental protection and all-weather continuous operation can be widely applied to cities, or mountain villages without suffiecient electricity supply, etc.
Description
Technical field
The present invention relates to solar energy switch technology field and control technology field, more particularly, relate to a kind of photovoltaic and drive refrigerating plant and control method thereof.
Background technology
The enhancing of and environmental consciousness energy-conservation along with people, solar energy more and more is widely used, and the utilization of solar energy has become various countries scientific and technical personnel's a striving direction.In solar energy utilized, solar refrigeration refrigerator, refrigerator were fields that has development prospect, also are the focuses in the current refrigeration research.The realization approach that solar energy is used for refrigerator and refrigerator technology has three: absorption type, and absorption, three kinds of photovoltaic cell change types.Preceding two kinds of forms are because of system complex, and refrigeration also has more remote than compression-type refrigeration difference from popularization and application.September 5 calendar year 2001, disclosed notification number was 2446465 Chinese utility model patent, a kind of employing solar photovoltaic driving technology is disclosed, utilize the refrigerator of solar cell for supplying power, this refrigerator will be input to freezer compressor by the direct current that solar cell produces after exchanging conversion.This refrigerator is owing to used AC conversion apparatus to make that Circuits System is loaded down with trivial details, implementation is complicated, and it does not consider continuous wet weather, the objective circumstances of sunlight deficiency.
Summary of the invention
The technical problem to be solved in the present invention provides that a kind of circuit is simple, the photovoltaic of environmental protection and energy saving drives refrigerating plant, this device can be under different weather round-the-clock operate as normal, to solve the deficiencies in the prior art.Another technical problem that the present invention will solve provides the control method that a kind of photovoltaic drives refrigerating plant, and this method makes system operate in good working order by to the distributing rationally of solar energy.
The scheme that solves the problems of the technologies described above is such: a kind of photovoltaic drives refrigerating plant, comprise refrigerator that direct current compressor is housed, the solar cell of dc source is provided to the direct current compressor of described refrigerator, it is characterized in that: also comprise battery, and connect the controller of described refrigerator, solar cell and battery, be provided with first switch of one of battery charging circuit and compressor power supply circuits and optionally connected logical two circuit in the described controller, the microprocessor of described controller is controlled the action of first switch according to input signal.
Above-mentioned photovoltaic drives refrigerating plant, it is characterized in that: described battery charging circuit also is connected to solar cell self discharge circuit and second switch of one of optionally connected logical described battery charging circuit and solar cell self discharge both circuits.Above-mentioned photovoltaic drives refrigerating plant and also comprises in order to cut off three switch of described battery to the direct current compressor power supply of described refrigerator.
Drive the control method of refrigerating plant according to photovoltaic of the present invention, the microprocessor of controller determines according to the design temperature and the observed temperature of refrigerating plant whether described direct current compressor works and output signal is controlled, it is characterized in that: need work if microprocessor is determined described direct current compressor, then carry out compressor power supply step; Otherwise, carry out charge battery step.
The power supply of compressor described in above-mentioned control method step may further comprise the steps: microprocessor is controlled first switch and is connected the compressor power supply circuits, and judgement battery-operated state and electrical energy parameter, when the battery electrical energy parameter is in the absence of discharge state less than first parameter value greater than second parameter value and battery, perhaps when the battery electrical energy parameter less than second parameter value, control the 3rd switch and disconnect being connected of battery and described direct current compressor.The number range of second parameter value is 30%～35%, and the number range of first parameter value is 50%～55%.Described battery charging and discharging step may further comprise the steps: microprocessor is controlled first switch and is disconnected the compressor power supply circuits and judge the battery electrical energy parameter, if the battery electrical energy parameter less than third value, is then connected battery charging circuit; If the battery electrical energy parameter greater than third value, is then connected solar cell self discharge circuit.Described third value is 100%.
Implement apparatus and method of the present invention, by being equipped with external battery and to distributing rationally by the power supply between solar cell, battery and refrigerating plant, make system operate in best duty, solve the shortcoming that present solar energy refrigerator implementation complexity, control are too simple, can't use all the year round, had the advantage of energy-saving and environmental protection, round-the-clock continuous operation.
Description of drawings
Fig. 1 drives the structural representation of refrigerating plant for photovoltaic of the present invention;
Fig. 2 drives control system logic block-diagram among the refrigerating plant embodiment for photovoltaic of the present invention;
Fig. 3 is a circuit diagram of the present invention;
Fig. 4 is the flow chart of control method embodiment of the present invention.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
Referring to Fig. 1, solar cell 1 in the present invention, solar cell 1 comprises a device that is used to collect the light collecting plate of solar energy and luminous energy is converted into electric energy, battery 4 is connected with refrigerator or refrigerator 2 by intelligent controller 3, and solar cell 1, battery 4 parallel connections are to refrigerator or refrigerator 2 power supplies.
Referring to Fig. 2, microprocessor 40 has voltage signal input module 1O at input port, charge characteristic signaling module 20, and temperature signal input module 30 is connected with control output module 50 at output port, shows output module 60.Importantly at charge characteristic signaling module 20 and temperature signal input module, temperature signal comprises the set temperature value of refrigerator or refrigerator, by the temperature data of temperature-sensitive head actual measurement, CPU determines whether needs work and export control signal and make direct current compressor get electric operation or cut off the power supply out of service of direct current compressor in this refrigerator or the refrigerator according to temperature signal.In charge characteristic signaling module 20, by fuzzy logic ordination study battery characteristics curve, obtain representing the percentage parameter (SOC) of battery state of charge, according to the SOC of battery and in conjunction with the need of work of direct current compressor, CPU exports control, comprise battery charge and discharge control, solar cell self discharge control, solar cell is to direct current compressor power supply control.
In Fig. 2, voltage signal input module 10 is with the signal of solar array voltage, battery tension input CPU and show in showing output module 50, and the current value that described demonstration output module can also output loading (refrigerator or refrigerator) shows, battery fills state show, make mistakes demonstration or alarm function.
Referring to Fig. 3, controller is provided with M+, M-, A+, A-and L+, L-interface, interface respectively with the solar cell both positive and negative polarity, accumulator anode and cathode and refrigerator direct current compressor both positive and negative polarity connect, dotted portion is the intelligent controller part among the figure, and T1, T2, T3 are respectively the switches of first, second, third switch.First switch can be connected the compressor power supply circuits or disconnect the compressor power supply circuits and connect battery charging circuit and the branch road of solar cell self discharge circuit parallel connection.Select to connect battery charging circuit or solar cell self discharge circuit by second switch again.
When first switch is connected the compressor power supply circuits, solar cell refrigerator or the refrigerator 2 given simultaneously in parallel with battery powered, when the electrical energy parameter of battery was lower than certain value, the switch of the 3rd switch disconnected, and battery stops the direct current compressor power supply to refrigerator or refrigerator.
Referring to Fig. 4, controller CPU is determined whether needs work of direct current compressor according to temperature signal, if microprocessor is controlled first switch and connected the compressor power supply circuits; Otherwise disconnect the compressor power supply circuits.After connecting the compressor power supply circuits, the battery direct current compressor power supply to refrigerator or refrigerator in parallel with solar cell, battery is in power supply process, by a kind of specific fuzzy logic ordination study battery characteristics curve, battery state of charge (SOC) error of study gained is controlled at about 10%, when the SOC value is cut off battery and refrigerator or refrigerator circuit loop less than 30%, the three switch, battery stops refrigerator or refrigerator are powered; Be higher than 50%, the three switch again and reclose the battery circuit loop when learning charged state (SOC), battery recovers refrigerator or refrigerator power supply.
When direct current compressor does not need work, the first switch work, cut-out is to the power supply of refrigerator or refrigerator, CPU judges the electrical energy parameter of battery, if battery is less than dashing, then control second switch and connect battery charging circuit, system is according to the SOC value and utilize the temperature following feedback of charging voltage, the hybrid circuit that application has pulse width modulation function provides the constant charge electric current and prevents overcharge, guarantees that maximum charging voltage is no more than 15 volts.When the battery electricity completely dashes, and direct current compressor not be need move the time, and second switch is connected solar cell self discharge circuit, and control system is regulated built-in resistor automatically, realizes the automatic discharging function of solar energy, effectively protection system.
When control system is carried out the course of work, system state of charge (SOC), charging current and load (refrigerator or refrigerator) size of current etc. show by LCD (LCD) that this shows output mode 60, and mode of operation, make mistakes promptings, load conducting sign and alarm etc. are by electronic display (LED) demonstration.Therefore can to this control system duty individual being directly acquainted be arranged by vision, be convenient to operation and control system, guarantee system's operational excellence.
Battery of the present invention can be selected the product of the PVX-12100 model of the product of E24SLDG model of (Battery Specialists) company or Concorde Battery company for use, and solar cell can be selected the CAN#US-64 of Canon Unisolar company or the SX75TU type product of Bp company for use.The direct current compressor parameter is chosen as rated voltage 12V, rated current 8A.
Claims (8)
1. a photovoltaic drives refrigerating plant, comprise refrigerator that direct current compressor is housed, the solar cell of dc source is provided to the direct current compressor of described refrigerator, it is characterized in that: also comprise battery, and connect the controller of described refrigerator, solar cell and battery, be provided with first switch of one of battery charging circuit and compressor power supply circuits and optionally connected logical two circuit in the described controller, the microprocessor of described controller is controlled the action of first switch according to the temperature signal of described refrigerator;
In described controller, described battery charging circuit also is connected to solar cell self discharge circuit and second switch of one of optionally connected logical described battery charging circuit and solar cell self discharge both circuits.
2. photovoltaic according to claim 1 drives refrigerating plant, it is characterized in that: in the described solar cell self discharge circuit adjustable resistance is set.
3. photovoltaic according to claim 1 drives refrigerating plant, it is characterized in that: also comprise in the described controller in order to cut off three switch of described battery to described direct current compressor power supply.
4. one kind drives the control method of refrigerating plant according to the described photovoltaic of claim 1, determines that according to the design temperature and the observed temperature of refrigerator the described direct current compressor output signal of whether working also controls, and it is characterized in that:
Need work if microprocessor is determined described direct current compressor, then carry out compressor power supply step, control first switch by described microprocessor and connect the compressor power supply circuits;
Otherwise, carry out the battery charging and discharging step, connect described battery charging circuit or solar cell self discharge circuit by second switch.
5. according to the described method of claim 4, it is characterized in that: also comprise in the described controller in order to cut off the 3rd switch of described battery to described direct current compressor power supply, described compressor power supply step further may further comprise the steps: judge battery-operated state and electrical energy parameter, when the battery electrical energy parameter is in the absence of discharge state less than first parameter value greater than second parameter value and battery, perhaps when the battery electrical energy parameter less than second parameter value, control the 3rd switch and disconnect being connected of battery and described direct current compressor.
6. according to the described method of claim 5, it is characterized in that: the number range of described second parameter value is 30%～35%, and the number range of first parameter value is 50%～55%.
7. according to the described method of claim 5, it is characterized in that: described battery charging and discharging step may further comprise the steps: microprocessor is controlled first switch and is disconnected the compressor power supply circuits and judge the battery electrical energy parameter, if the battery electrical energy parameter less than third value, is then connected battery charging circuit; If the battery electrical energy parameter greater than third value, is then connected solar cell self discharge circuit.
8. according to the described method of claim 7, it is characterized in that: described third value is 100%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101176188A CN100337081C (en) | 2003-12-26 | 2003-12-26 | Photovoltaic driving refrigerating unit and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101176188A CN100337081C (en) | 2003-12-26 | 2003-12-26 | Photovoltaic driving refrigerating unit and control method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN1635320A CN1635320A (en) | 2005-07-06 |
| CN100337081C true CN100337081C (en) | 2007-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2003101176188A Expired - Fee Related CN100337081C (en) | 2003-12-26 | 2003-12-26 | Photovoltaic driving refrigerating unit and control method thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100414218C (en) * | 2005-11-10 | 2008-08-27 | 上海交通大学 | Outdoor solar uniflow cold-accumulating refrigerating apparatus |
| CN105241152A (en) * | 2015-11-22 | 2016-01-13 | 镇江市双利光电科技有限公司 | Solar refrigerator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5935741A (en) * | 1982-08-20 | 1984-02-27 | Sanyo Electric Co Ltd | Solar cooling/heating system |
| CN2225639Y (en) * | 1995-01-24 | 1996-04-24 | 胡廷欣 | Solar refrigerator and air conditioner |
| CN2226258Y (en) * | 1994-03-11 | 1996-05-01 | 深圳市永华电子专利精品开发有限公司 | Solar refrigerator |
| CN2446465Y (en) * | 2000-08-11 | 2001-09-05 | 海尔集团公司 | Refrigerator using solar battery for supply power |
| CN2505782Y (en) * | 2001-04-30 | 2002-08-14 | 上海交通大学 | Solar semiconductor refrigerator |
| CN2669100Y (en) * | 2003-12-26 | 2005-01-05 | 广东科龙电器股份有限公司 | Photovoltaic driving refrigeration device |
-
2003
- 2003-12-26 CN CNB2003101176188A patent/CN100337081C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5935741A (en) * | 1982-08-20 | 1984-02-27 | Sanyo Electric Co Ltd | Solar cooling/heating system |
| CN2226258Y (en) * | 1994-03-11 | 1996-05-01 | 深圳市永华电子专利精品开发有限公司 | Solar refrigerator |
| CN2225639Y (en) * | 1995-01-24 | 1996-04-24 | 胡廷欣 | Solar refrigerator and air conditioner |
| CN2446465Y (en) * | 2000-08-11 | 2001-09-05 | 海尔集团公司 | Refrigerator using solar battery for supply power |
| CN2505782Y (en) * | 2001-04-30 | 2002-08-14 | 上海交通大学 | Solar semiconductor refrigerator |
| CN2669100Y (en) * | 2003-12-26 | 2005-01-05 | 广东科龙电器股份有限公司 | Photovoltaic driving refrigeration device |
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| CN1635320A (en) | 2005-07-06 |
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Granted publication date: 20070912 Termination date: 20131226 |