CN201839043U - Photovoltaic charge-discharge control device with storage battery vulcanization recognizing and treating functions - Google Patents
Photovoltaic charge-discharge control device with storage battery vulcanization recognizing and treating functions Download PDFInfo
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- CN201839043U CN201839043U CN2010205960391U CN201020596039U CN201839043U CN 201839043 U CN201839043 U CN 201839043U CN 2010205960391 U CN2010205960391 U CN 2010205960391U CN 201020596039 U CN201020596039 U CN 201020596039U CN 201839043 U CN201839043 U CN 201839043U
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Abstract
The utility model discloses a photovoltaic charge-discharge control device with storage battery vulcanization recognizing and treating functions. The photovoltaic charge-discharge control device comprises a solar battery component, a storage battery, an overcharge protection circuit, a comparing control circuit and a vulcanization logical judgment circuit, wherein the solar battery component is connected with the storage battery through the overcharge protection circuit, the input of the comparing control circuit is respectively connected with the solar battery component and the storage battery, the output of the comparing control circuit is respectively connected with the input of the overcharge protection circuit and the input of the vulcanization logical judgment circuit, and the output of the vulcanization logical judgment circuit is connected with the input of the overcharge protection circuit. The photovoltaic charge-discharge control device is used for judging whether the phenomenon of vulcanization occurs on the storage battery or not by detecting the conditions of limit discharging and internal resistance increase of the storage battery in time, and a high-voltage and low-current charging mode is adopted for repairing the storage battery which is vulcanized. Therefore, the service life of the storage battery is greatly prolonged.
Description
Technical field
The utility model relates to a kind of photovoltaic charge-discharge controller, particularly relates to a kind of photovoltaic charge-discharge controller that has storage battery vulcanization identification and handle.
Background technology
The price advantage that lead acid accumulator is exclusive makes lead acid accumulator be widely used in photovoltaic system.Yet in actual use, the useful life of lead acid accumulator is general short partially, but 90% lead acid accumulator that damages caused by vulcanizing, and relevant with the particularity of photovoltaic system, and is not all to be due to the quality problems of storage battery.The effective property of solar recharging, have only when have sunlight daytime and could charge storage battery, when continuous many days rainy weather occurring, storage battery will can not get the charging of solar module, and load every day is all in electricity consumption, thereby the internal resistance of storage battery will increase, and causes storage battery to be in the power shortage state in the course of time.In addition, storage battery is through repeatedly charge and discharge process, and particularly each limit discharge also can cause storage battery sulfation slowly to occur, thereby its internal resistance is increased gradually.If the sulfation of storage battery is not in time repaired, discharging and recharging of accumulators caused difficulty, just rise very highly as storage battery one charging voltage, a discharge voltage just falls very soon, storage battery finally occurs and can not charge substantially, can not be with phenomenons such as putting electricity.
At present, one control mode that adopts floating charge, all fills of the photovoltaic charged control device of prior art, also there are not the operating voltage of utilizing solar module itself and the characteristic of open circuit voltage whether to differentiate storage battery vulcanization, and the control device that the storage battery of sulfuration is repaired.
The utility model content
The purpose of this utility model is to overcome the deficiency of prior art, a kind of photovoltaic charge-discharge controller that has storage battery vulcanization identification and handle is provided, limit discharge and internal resistance by timely detection storage battery increase situation, judge whether storage battery sulfation occurs, and adopt the charging modes of high voltage, low current that the sulfation of storage battery is repaired, thereby overcome the insoluble weak point of existing in prior technology storage battery vulcanization phenomenon.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of photovoltaic charge-discharge controller that has storage battery vulcanization identification and handle, comprise solar module, storage battery, overcharge protection circuit, solar module is connected with storage battery by overcharge protection circuit; Also comprise a comparison control circuit and a sulfuration logic judging circuit; The input of this comparison control circuit is connected with storage battery with solar module respectively, and the output of this comparison control circuit is connected with the input of overcharge protection circuit and the input of sulfuration logic judging circuit respectively; The output of sulfuration logic judging circuit is connected with the input of overcharge protection circuit.
Described comparison control circuit comprises current sampling circuit and voltage comparator circuit; Current sampling circuit is connected in the charge circuit of described solar module and storage battery, and the output of current sampling circuit connects an input of voltage comparator circuit; Another input of voltage comparator circuit is connected with described storage battery, and the output of voltage comparator circuit connects the input of described sulfuration logic judging circuit and the input of overcharge protection circuit respectively.
Described voltage comparator circuit comprises first control chip, first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, voltage stabilizing didoe, first diode, first electric capacity, second electric capacity and adjustable rheostat; The positive pole of storage battery connects the positive pole of first diode, the negative pole of first diode connects an end of first resistance and second resistance respectively, the other end of first resistance connects the 3rd pin of first control chip and the 1st pin of first control chip by the 3rd resistance and the 6th resistance respectively, another termination of second resistance is an adjustable rheostatic end, the 2nd pin of adjustable rheostatic adjusting termination first control chip; The 5th resistance is connected between the 1st pin and the 2nd pin of first control chip; The 4th resistance is connected between the 3rd pin and the 5th pin of first control chip; First electric capacity is connected between the negative pole of the negative pole of storage battery and first diode; Second electric capacity is connected between the 2nd pin and the 5th pin of first control chip, and the 4th pin of first control chip, the 5th pin and the adjustable rheostatic other end be ground connection respectively; The positive pole of voltage stabilizing didoe connects the negative pole of storage battery, and the negative pole of voltage stabilizing didoe connects the other end of first resistance; The minus earth of storage battery; The 1st pin of first control chip connects the input of described sulfuration logic judging circuit and described overcharge protection circuit respectively.
Described current sampling circuit is a current sampling resistor, the negative pole of a termination solar module of this current sampling resistor, the negative pole of another termination storage battery of current sampling resistor; Also comprise the 7th resistance and the 8th resistance; The negative pole of one termination solar module of the 8th resistance, the 6th pin of described first control chip of another termination of the 8th resistance; The other end of one termination the 8th resistance of the 7th resistance, the other end of the 7th resistance connects the 8th pin of described first control chip and the other end of described first resistance respectively.
Described sulfuration logic judging circuit comprises that second control chip, light-emitting diode, the 9th resistance, the tenth resistance, second diode, storage battery cross discharge signal, battery discharging time signal; The 1st pin of second control chip connects the other end of described first resistance; The 1st pin of described first control chip connects the positive pole of second diode, and the negative pole of second diode connects the 5th pin of second control chip; Also by the positive pole of the 9th resistance sending and receiving optical diode, the negative pole of light-emitting diode connects the 1st pin of second control chip to the 5th pin of this second control chip; The 8th pin ground connection of second control chip; The 7th pin of second control chip connects storage battery and crosses discharge signal; The 6th pin of second control chip connects the battery discharging time signal by the tenth resistance.
Described overcharge protection circuit comprises first triode, second triode, the 3rd electric capacity and relay; The 1st pin of described first control chip connects the base stage of first triode, and the emitter of first triode connects the base stage of second triode, and the collector electrode of first triode connects the collector electrode of second triode; The grounded emitter of second triode, an end of the coil input of the collector connecting relay of second triode; The positive pole of another termination storage battery of the coil input of relay, the moving contact of relay connects the positive pole of solar module, and a wherein fixed contact of relay connects the positive pole of storage battery; The 3rd electric capacity is connected between the coil input end of relay.
A kind of photovoltaic charge-discharge controller that has storage battery vulcanization identification and handle of the present utility model; adopt comparison control circuit and sulfuration logic judging circuit; in time detect the phenomenon whether storage battery limit discharge and internal resistance increase occur; thereby judge whether storage battery sulfation occurs; and occur at storage battery under the situation of sulfation; with original high voltage protective point cancellation; adopt and improve charging voltage; reduce the mode of charging current; to the charging of storage battery reparation property; make the storage battery of sulfuration obtain low current charge timely; slowly reduce its internal resistance, thereby slowly return to the state before the sulfuration.After storage battery vulcanization disappears, just recover original high voltage protective point again, thereby avoid accumulator liquid to be evaporated and cause the phenomenon of storage battery lean solution.
The beneficial effects of the utility model are, owing to comprise a comparison control circuit and a sulfuration logic judging circuit; And the input of comparison control circuit is connected with the negative pole of solar module and the positive pole of storage battery respectively, and the output of this comparison control circuit is connected with the input of overcharge protection circuit and the input of sulfuration logic judging circuit respectively; The output of sulfuration logic judging circuit is connected with the input of overcharge protection circuit, make comparison control circuit not only the voltage signal of storage battery can be exported to the sulfuration logic judging circuit, can also control overcharge protection circuit and before storage battery vulcanizes, storage battery not carried out over-charge protective; Vulcanizing logic judging circuit then can gather the discharge signal excessively of storage battery, cross and put time signal and voltage signal; internal resistance to storage battery is calculated; output sulfuration signal; and close overcharge protection circuit; make solar module carry out forced charge to storage battery; thereby make storage battery under the charging modes of high voltage, low current, slowly reduce its internal resistance, the purpose that reaches storage battery vulcanization identification and handle, the useful life of improving storage battery.
In sum, a kind of photovoltaic charge-discharge controller that has storage battery vulcanization identification and handle of the present utility model, have useful life that can prolong storage battery greatly, reduce system operation cost, promote the extensive use of photovoltaic system, characteristics such as stable, reliable.
Below in conjunction with drawings and Examples the utility model is described in further detail; But a kind of photovoltaic charge-discharge controller that has storage battery vulcanization identification and handle of the present utility model is not limited to embodiment.
Description of drawings
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is a circuit connection diagram of the present utility model.
Embodiment
Embodiment, see also shown in Figure 1, a kind of photovoltaic charge-discharge controller that has storage battery vulcanization identification and handle of the present utility model comprises solar module 1, storage battery 3, overcharge protection circuit 2, comparison control circuit 4 and sulfuration logic judging circuit 5; Solar module 1 is connected with storage battery 3 by overcharge protection circuit 2; The input of comparison control circuit 4 is connected with storage battery 3 with solar module 1 respectively, and the output of this comparison control circuit 4 is connected with the input of overcharge protection circuit 2 and the input of sulfuration logic judging circuit 5 respectively; The output of sulfuration logic judging circuit 5 is connected with the input of overcharge protection circuit 2.
Wherein, described comparison control circuit 4 comprises current sampling circuit 41 and voltage comparator circuit 42; Current sampling circuit 41 is connected in the charge circuit of described solar module 1 and storage battery 3, and the output of current sampling circuit 41 connects an input of voltage comparator circuit 42; Another input of voltage comparator circuit 42 also is connected with described storage battery 3, and the output of voltage comparator circuit 42 connects the input of described sulfuration logic judging circuit 5 and the input of overcharge protection circuit 2 respectively.
See also shown in Figure 2ly, described voltage comparator circuit 42 comprises the first control chip IC1, first resistance R 1, second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, voltage stabilizing didoe DZ1, the first diode D1, first capacitor C 1, second capacitor C 2 and adjustable rheostat RP; The positive pole of storage battery connects the positive pole of the first diode D1, the negative pole of the first diode D1 connects an end of first resistance R 1 and second resistance R 2 respectively, the other end of first resistance R 1 connects the 3rd pin of the first control chip IC1 and the 1st pin of the first control chip IC1 by the 3rd resistance R 3 and the 6th resistance R 6 respectively, the end of the adjustable rheostat RP of another termination of second resistance R 2, the 2nd pin of the adjusting termination first control chip IC1 of adjustable rheostat RP; The 5th resistance R 5 is connected between the 1st pin and the 2nd pin of the first control chip IC1; The 4th resistance R 4 is connected between the 3rd pin and the 5th pin of the first control chip IC1; First capacitor C 1 is connected between the negative pole of the negative pole of storage battery and the first diode D1; Second capacitor C 2 is connected between the 2nd pin and the 5th pin of the first control chip IC1, and the other end of the 4th pin of the first control chip IC1, the 5th pin and adjustable rheostat RP is ground connection respectively; The positive pole of voltage stabilizing didoe DZ1 connects the negative pole of storage battery, and the negative pole of voltage stabilizing didoe DZ1 connects the other end of first resistance R 1; The minus earth of storage battery; The 1st pin of the first control chip IC1 connects the input of described sulfuration logic judging circuit 5 and described overcharge protection circuit 2 respectively;
Described current sampling circuit 41 is a current sampling resistor RX, the negative pole of the termination solar module of this current sampling resistor RX, the negative pole of another termination storage battery of current sampling resistor RX; Also comprise the 7th resistance R 7 and the 8th resistance R 8; The negative pole of one termination solar module of the 8th resistance R 8, the 6th pin of the described first control chip IC1 of another termination of the 8th resistance R 8; The other end of one termination the 8th resistance R 8 of the 7th resistance R 7, the other end of the 7th resistance R 7 connects the 8th pin of the described first control chip IC1 and the other end of described first resistance R 1 respectively;
Described sulfuration logic judging circuit 5 comprises that the second control chip IC2, LED, the 9th resistance R 9, the tenth resistance R 10, the second diode D2, storage battery cross discharge signal, battery discharging time signal; The 1st pin of the second control chip IC2 connects the other end of described first resistance R 1; The 1st pin of the described first control chip IC1 connects the positive pole of the second diode D2, and the negative pole of the second diode D2 connects the 5th pin of the second control chip IC2; Also by the positive pole of the 9th resistance R 9 sending and receiving optical diode LED, the negative pole of LED connects the 1st pin of the second control chip IC2 to the 5th pin of this second control chip IC2; The 8th pin ground connection of the second control chip IC2; The 7th pin of the second control chip IC2 connects storage battery and crosses discharge signal; The 6th pin of the second control chip IC2 connects the battery discharging time signal by the tenth resistance R 10;
Described overcharge protection circuit 2 comprises the first triode BG1, the second triode BG2, the 3rd capacitor C 3 and relay J K; The 1st pin of the described first control chip IC1 connects the base stage of the first triode BG1, and the emitter of the first triode BG1 connects the base stage of the second triode BG2, and the collector electrode of the first triode BG1 connects the collector electrode of the second triode BG2; The grounded emitter of the second triode BG2, an end of the coil input of the collector connecting relay JK of the second triode BG2; The positive pole of another termination storage battery of the coil input of relay J K, the moving contact of relay J K connects the positive pole of solar module, and the wherein fixed contact of relay J K connects the positive pole of storage battery; The 3rd capacitor C 3 is connected between the coil input end of relay J K.
A kind of photovoltaic charge-discharge controller that has storage battery vulcanization identification and handle of the present utility model, the solar recharging electric current is taken a sample through current sampling resistor RX, after the 7th resistance R 7 and 8 fine settings of the 8th resistance R, enter the first control chip IC1 inside from the 6th pin of the first control chip IC1, and at the inner voltage that produces the 0-2 volt that is proportional to the electric current variation of the first control chip IC1, the high voltage protective point voltage of this voltage and storage battery (being about 14.4 volts) stack, the variable reference voltage of generation from 14.4 volts to 16.4 volts of dynamic changes, this variable reference voltage and compare by the battery tension that the 2nd pin of the first control chip IC1 enters; If battery tension is higher than this voltage; then export high level signal from the 1st pin of the first control chip IC1; be used to drive by the first triode BG1 and the compound overcharge protection circuit of forming of the second triode BG2; the sound contact of relay J K is disconnected, and solar module does not charge to storage battery.
Battery tension is finished analog-to-digital conversion in the first control chip IC1 after, the signal that has battery tension information enters the second control chip IC2 from the 5th pin of the second control chip IC2, simultaneously, the second control chip IC2 crosses in conjunction with the storage battery of being imported by the 6th pin of the second control chip IC2 and puts time signal, internal resistance to storage battery is calculated, and obtains the relative sulfuration ratio of storage battery.When the 7th pin of the second control chip IC2 has storage battery to cross the discharge signal input; this second control chip IC2 is at once at its 5th pin output sulfuration signal; and driving overcharge protection circuit; make its sound contact of relay J K forced closed, handle so that solar module forces that storage battery is filled activation by force.
A kind of photovoltaic charge-discharge controller that has storage battery vulcanization identification and handle of the present utility model, its first resistance R 1 and voltage stabilizing didoe DZ1 are formed+5 volts and are given the first control chip IC1 and second control chip IC2 power supply; The 4th resistance R 4 is benchmark of 14.4 volts, and the 5th resistance R 5 is return differences; Second resistance R 2 and adjustable rheostat RP form the voltage input of the first control chip IC1, and can change 14.4 volts storage battery high voltage protective point voltage; Current sampling resistor RX, the 7th resistance R 7 and the 8th resistance R 8 can be adjusted the size of the charging current among the input first control chip IC1, change 0 to 2 volt the numerical value that is superposeed; The 5th pin of the second control chip IC2 is the output of sulfuration signal, also is the input of battery tension, and the 5th pin is that low level is effective as sulfuration during signal output part; The battery tension digital pulse signal of the 1st pin output of the first control chip IC1 can produce the direct current signal of overcharge protection circuit and disturb, and is eliminated by the 3rd capacitor C 3.
A kind of photovoltaic charge-discharge controller that has storage battery vulcanization identification and handle of the present utility model, when storage battery is full of, resistive is big in its charging, and the discharge internal resistance diminishes, and when storage battery is in power shortage, resistive is big in its discharge, the charging internal resistance diminishes, and therefore, adopts the sulfuration logic judging circuit, can realize that daytime charging measures to storage battery, evening discharge measuring.Adopt comparison control circuit and sulfuration logic judging circuit; can in time detect the phenomenon whether storage battery limit discharge and internal resistance increase occur; thereby judge whether storage battery sulfation occurs; and occur at storage battery under the situation of sulfation; with original high voltage protective point cancellation; adopt the mode that improves charging voltage, reduces charging current; to the charging of storage battery reparation property; make the storage battery of sulfuration obtain low current charge timely; slowly reduce its internal resistance, thereby slowly return to the state before the sulfuration.After storage battery vulcanization disappears, just recover original high voltage protective point again, thereby avoid accumulator liquid to be evaporated and cause the phenomenon of storage battery lean solution.
The foregoing description only is used for further specifying a kind of photovoltaic charge-discharge controller that has storage battery vulcanization identification and handle of the present utility model; but the utility model is not limited to embodiment; every foundation technical spirit of the present utility model all falls in the protection range of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (6)
1. a photovoltaic charge-discharge controller that has storage battery vulcanization identification and handle comprises solar module, storage battery, overcharge protection circuit, and solar module is connected with storage battery by overcharge protection circuit; It is characterized in that: also comprise a comparison control circuit and a sulfuration logic judging circuit; The input of this comparison control circuit is connected with storage battery with solar module respectively, and the output of this comparison control circuit is connected with the input of overcharge protection circuit and the input of sulfuration logic judging circuit respectively; The output of sulfuration logic judging circuit is connected with the input of overcharge protection circuit.
2. the photovoltaic charge-discharge controller that has storage battery vulcanization identification and handle according to claim 1, it is characterized in that: described comparison control circuit comprises current sampling circuit and voltage comparator circuit; Current sampling circuit is connected in the charge circuit of described solar module and storage battery, and the output of current sampling circuit connects an input of voltage comparator circuit; Another input of voltage comparator circuit is connected with described storage battery, and the output of voltage comparator circuit connects the input of described sulfuration logic judging circuit and the input of overcharge protection circuit respectively.
3. the photovoltaic charge-discharge controller that has storage battery vulcanization identification and handle according to claim 2, it is characterized in that: described voltage comparator circuit comprises first control chip, first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, voltage stabilizing didoe, first diode, first electric capacity, second electric capacity and adjustable rheostat; The positive pole of storage battery connects the positive pole of first diode, the negative pole of first diode connects an end of first resistance and second resistance respectively, the other end of first resistance connects the 3rd pin of first control chip and the 1st pin of first control chip by the 3rd resistance and the 6th resistance respectively, another termination of second resistance is an adjustable rheostatic end, the 2nd pin of adjustable rheostatic adjusting termination first control chip; The 5th resistance is connected between the 1st pin and the 2nd pin of first control chip; The 4th resistance is connected between the 3rd pin and the 5th pin of first control chip; First electric capacity is connected between the negative pole of the negative pole of storage battery and first diode; Second electric capacity is connected between the 2nd pin and the 5th pin of first control chip, and the 4th pin of first control chip, the 5th pin and the adjustable rheostatic other end be ground connection respectively; The positive pole of voltage stabilizing didoe connects the negative pole of storage battery, and the negative pole of voltage stabilizing didoe connects the other end of first resistance; The minus earth of storage battery; The 1st pin of first control chip connects the input of described sulfuration logic judging circuit and described overcharge protection circuit respectively.
4. the photovoltaic charge-discharge controller that has storage battery vulcanization identification and handle according to claim 3, it is characterized in that: described current sampling circuit is a current sampling resistor, the negative pole of one termination solar module of this current sampling resistor, the negative pole of another termination storage battery of current sampling resistor; Also comprise the 7th resistance and the 8th resistance; The negative pole of one termination solar module of the 8th resistance, the 6th pin of described first control chip of another termination of the 8th resistance; The other end of one termination the 8th resistance of the 7th resistance, the other end of the 7th resistance connects the 8th pin of described first control chip and the other end of described first resistance respectively.
5. will remove the 3 described photovoltaic charge-discharge controllers that have storage battery vulcanization identification and handle according to right, it is characterized in that: described sulfuration logic judging circuit comprises that second control chip, light-emitting diode, the 9th resistance, the tenth resistance, second diode, storage battery cross discharge signal, battery discharging time signal; The 1st pin of second control chip connects the other end of described first resistance; The 1st pin of described first control chip connects the positive pole of second diode, and the negative pole of second diode connects the 5th pin of second control chip; Also by the positive pole of the 9th resistance sending and receiving optical diode, the negative pole of light-emitting diode connects the 1st pin of second control chip to the 5th pin of this second control chip; The 8th pin ground connection of second control chip; The 7th pin of second control chip connects storage battery and crosses discharge signal; The 6th pin of second control chip connects the battery discharging time signal by the tenth resistance.
6. the photovoltaic charge-discharge controller that has storage battery vulcanization identification and handle according to claim 3, it is characterized in that: described overcharge protection circuit comprises first triode, second triode, the 3rd electric capacity and relay; The 1st pin of described first control chip connects the base stage of first triode, and the emitter of first triode connects the base stage of second triode, and the collector electrode of first triode connects the collector electrode of second triode; The grounded emitter of second triode, an end of the coil input of the collector connecting relay of second triode; The positive pole of another termination storage battery of the coil input of relay, the moving contact of relay connects the positive pole of solar module, and a wherein fixed contact of relay connects the positive pole of storage battery; The 3rd electric capacity is connected between the coil input end of relay.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010205960391U CN201839043U (en) | 2010-11-05 | 2010-11-05 | Photovoltaic charge-discharge control device with storage battery vulcanization recognizing and treating functions |
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| CN2010205960391U CN201839043U (en) | 2010-11-05 | 2010-11-05 | Photovoltaic charge-discharge control device with storage battery vulcanization recognizing and treating functions |
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| CN201839043U true CN201839043U (en) | 2011-05-18 |
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| CN2010205960391U Expired - Fee Related CN201839043U (en) | 2010-11-05 | 2010-11-05 | Photovoltaic charge-discharge control device with storage battery vulcanization recognizing and treating functions |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101976875A (en) * | 2010-11-05 | 2011-02-16 | 漳州国绿太阳能科技有限公司 | Photovoltaic charging and discharging control device with storage battery vulcanizing recognition and treatment |
| CN108692466A (en) * | 2018-06-13 | 2018-10-23 | 汪霜叶 | A kind of intelligence GaAs high power concentrator cogeneration of heat and power module |
-
2010
- 2010-11-05 CN CN2010205960391U patent/CN201839043U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101976875A (en) * | 2010-11-05 | 2011-02-16 | 漳州国绿太阳能科技有限公司 | Photovoltaic charging and discharging control device with storage battery vulcanizing recognition and treatment |
| CN101976875B (en) * | 2010-11-05 | 2013-12-11 | 漳州国绿太阳能科技有限公司 | Photovoltaic charging and discharging control device with storage battery vulcanizing recognition and treatment |
| CN108692466A (en) * | 2018-06-13 | 2018-10-23 | 汪霜叶 | A kind of intelligence GaAs high power concentrator cogeneration of heat and power module |
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Granted publication date: 20110518 Termination date: 20131105 |