CN104124733A - Control device and control method for charge and discharge of solar cell - Google Patents
Control device and control method for charge and discharge of solar cell Download PDFInfo
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- CN104124733A CN104124733A CN201410307379.0A CN201410307379A CN104124733A CN 104124733 A CN104124733 A CN 104124733A CN 201410307379 A CN201410307379 A CN 201410307379A CN 104124733 A CN104124733 A CN 104124733A
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Abstract
The invention belongs to the field of cell charge, and particularly relates to a control device and a control method for the charge and discharge of a solar cell. The control device is characterized by comprising a solar panel, a charge control circuit, an automatic lock switch K1, a cell pack, an automatic lock switch K2 and an inverter which are sequentially connected. The control method comprises the following steps of: step 1, displaying a sunlight intensity signal, and displaying the charge and discharge voltage values of the cell pack on a display circuit; step 2, judging whether the discharge voltage value turns on or turns off the automatic lock switch K2 to discharge the cell pack by a central processor, and whether a standby cell pack is enabled; step 3, judging whether the charge voltage value turns on or turns off the automatic lock switch K1 to enable the cell pack to be in a charged state by the central processor; step 4, judging whether to charge the standby cell pack or turns off a self-locking switch device. Because power-off control can be completely realized to avoid the phenomena of trickles and backflow in a loop, thus ensuring the longer service life of the cell.
Description
Technical field
The present invention relates to a kind of battery charging and discharging control field, be specifically related to a kind of solar cell charge-discharge controller and control method thereof.
Background technology
Solar energy is a kind of emerging regenerative resource, is the process of electric energy that the emittance of sunlight is changed into.In recent years, solar photovoltaic technology has become the focus of developmental research, as a kind of comparatively desirable electric energy generating source, and has obtained significant effect; Solar power system is generally comprised of solar battery group, controller for solar, storage battery (group), if out-put supply is 220V or 110V, also need to configure inverter dispatch control system, due to the unsteadiness of photovoltaic generation, the electric energy that need to be transformed to solar energy carries out energy storage recycling.
Realize the energy storage utilization to solar energy power generating, must control the charging and discharging of battery, at solar recharging control field, general is all that a Battery pack adds the system configuration that a charging control is put, but in most situation, be all in parallel by many Battery packs or be in series, as the market large-scale, office building, dormitory building, hotel, the commercial locations such as hotel, no matter using solar energy as photovoltaic generation or solar water heater, battery is in charging and discharging process, often cause fallback in low year of battery charge controller, as battery, charging overcharges or undercharge often, when whole solar control system is not worked, or when reserve battery is not used, form loop with charge or discharge control circuit, continuation is with form charge or discharge in loop of trickle, affected the electric power storage ability of battery, also can affect the useful life of battery simultaneously, meanwhile, the battery between does not on the same group produce crossfire phenomenon yet, also affected whole solar control system fail safe.
Summary of the invention
Object of the present invention is for solving the problems referred to above of prior art, provide a kind of battery of solar energy in the process of filling, detect in real time the voltage of storage battery, when battery overcharging, cross put and obsolete situation under, make between battery and circuit, be off-state between battery and battery, can not form loop logical, thereby avoid producing in loop the phenomenon of trickle.
In order to solve the problems of the technologies described above, the invention provides a kind of solar cell charge-discharge controller and control method thereof, it comprises solar panels, charging control circuit, automatic locking K switch 1, battery pack, automatic locking K switch 2, the inverter connecting successively;
In described automatic locking K switch 1, K2, be provided with K switch 1-1, K1-2, K2-1, K1-2, and with relay J 1, the J2 of coil.
In the present invention, also comprise central processing unit, described central processing unit is connected with charging control circuit by input detecting circuit, and described central processing unit is also connected with inverter by output detection circuit; Described central processing unit is connected with display circuit with keyboard, also by drive circuit with J1 one end of automatic locking K switch 1, J2 one end of the negative electrode of diode D2, automatic locking K2, the negative electrode of diode D2 is connected respectively, the anode of described diode D1, D2, the other end of J1, J2 are connected with ground;
Further, also comprise left photo resistance R1 and right photo resistance R2, one end of described left photo resistance R1 is connected with the anodal S+ of solar panels, and the other end is connected with right photo resistance R2, central processing unit respectively, and the other end of described R2 is connected with solar energy negative pole S-;
Preferably, described battery pack is lead-acid battery, and rated voltage is 24V.
Preferably, described battery pack is at least 2 groups or two groups of in parallel or series connection.
The present invention also provides a kind of control method of solar cell charge-discharge controller, it is characterized in that, comprises the solar panels, charging control circuit, automatic locking K switch 1, battery pack, automatic locking K switch 2, the inverter that connect successively; The other end of described R2 is connected with solar energy negative pole S-; In described automatic locking K switch 1, K2, be provided with K switch 1-1, K1-2, K2-1, K1-2, and with relay J 1, the J2 of coil;
Further, also comprise left photo resistance R1 and right photo resistance R2, one end of described left photo resistance R1 is connected with the anodal S+ of solar panels, the other end is connected with right photo resistance R2, central processing unit respectively, the other end of described R2 is connected with solar energy negative pole S-, and described control method comprises the following steps:
The first step, the discharge voltage of the strength signal of left photo resistance R1, right photo resistance R2 real-time sampling sunlight, input detecting circuit real-time sampling charging voltage and output detection circuit real-time sampling battery, and after being transferred to central processing unit and must processing by preset value, on display circuit, show;
Second step, the magnitude of voltage that central processing unit collects according to output detection circuit, by preset processing, judge whether to open automatic locking K switch 2, make battery power discharge, powering load, otherwise turn-off automatic locking K switch 2, will not discharge, and enable battery backup;
The 3rd step, the magnitude of voltage that central processing unit collects according to input detecting circuit, by preset processing, judges whether to open automatic locking K switch 1, makes battery pack in charged state, otherwise turn-offs automatic locking K switch 1, will not charge;
The 4th step, central processing unit, according to the strength signal of left photo resistance R1, right photo resistance R2 real-time sampling sunlight, by preset processing, judges whether or to disconnect self-lock switch device to battery backup charging.
Preferably, the input detecting circuit described in described second step and between be also connected to bleeder circuit between output detection circuit in charge controller and the 3rd step and inverter.
Compared with prior art there is following beneficial effect, the present invention can adapt to different battery types, many in battery charge and discharge process, according to the voltage of battery, carry out automatic inflatable electric control, make two or more sets storage batterys, while being used alternatingly, between reserve battery and control circuit and storage battery, disconnect completely, make between charging control circuit and charge/discharge control circuit and storage battery and between storage battery and storage battery all in not charging, not electric discharge, in loop, do not produce trickle, backflow phenomenon, whole Circuits System is zero power consumption state.Owing to can realizing complete power-off, control, avoided battery to cross putting, floating charge is long and affect useful life of battery, meanwhile, circuit structure of the present invention is simple, safety easy to use, and defencive function is perfect, effective.
Accompanying drawing explanation
In order to be illustrated more clearly in example of the present invention or technical scheme of the prior art, to needed accompanying drawing in embodiment or description of the Prior Art be done simply and be introduced below, apparently, accompanying drawing in the following describes is only examples more of the present invention, to those skilled in the art, do not paying under creationary prerequisite, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 shows a kind of solar cell charge-discharge controller of the present invention structural representation;
Fig. 2 shows a kind of solar cell charge/discharge control method of the present invention structural representation;
Fig. 3 shows bleeder circuit line structure schematic diagram in a kind of solar cell charge-discharge controller of the present invention;
Embodiment
Below in conjunction with the accompanying drawing in example of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only a part of embodiment of invention, rather than whole embodiment.Embodiment based in invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Referring to Fig. 1, show the structural representation of a kind of solar cell charge-discharge controller of the present invention, in conjunction with Fig. 1, this solar cell charge-discharge controller comprises, the solar panels 1, charging control circuit 2, automatic locking K switch 1, battery pack 3, automatic locking K switch 2, the inverter 4 that connect successively.
Wherein, in automatic locking switch 11, be provided with K switch 1-1, K1-2, K2-1, K1-2, and with relay J 1, the J2 of coil; Whole device is when normal operating conditions, and the built-in switch K1-1 of automatic locking switch, K1-2, K2-1, K1-2 closure, convert 220VAC to through inverter, gives load 5 power supplies.
As specific embodiments of the invention, also comprise central processing unit 8, described central processing unit 8 is connected the charging voltage for detection of battery pack 3 by input detecting circuit 9 with charging control circuit 2, described central processing unit 8 is also connected with inverter 4 by output detection circuit 6, the operating voltage state during for detection of battery pack 3 electric discharge; Described central processing unit 8 is connected with display circuit 7 with keyboard, also by drive circuit 10 with J1 one end of automatic locking K switch 1, J2 one end of the negative electrode of diode D2, automatic locking K switch 2, the negative electrode of diode D2 is connected respectively, the anode of described diode D1, D2, the other end of J1, J2 are connected with ground.
As most preferred embodiment of the present invention, also comprise left photo resistance R1 and right photo resistance R2, one end of described left photo resistance R1 is connected with the anodal S+ of solar panels 1, the other end is connected with right photo resistance R2, central processing unit 8 respectively, the other end of described right photo resistance R2 is connected with solar panels 1 negative pole S-, is also connected with Transient Suppression Diode D1 between anodal S+, the negative pole S-of solar panels 1 simultaneously.
In specific embodiments of the invention, described battery pack 3 is lead acid accumulator, the rated voltage of selected battery pack 3 is 24V, using another group storage battery is in parallel, become to be used alternatingly or as standby (not shown) simultaneously, but according to actual needs, also two group storage batteries can be connected into after 48V, do standby with other two group storage battery 48V in parallel again, but the rated voltage that it should be noted that single group storage battery of the present invention is not limited to the type of 24V, can select 12V, 48V.
Referring to Fig. 2, show a kind of solar cell charge/discharge control method of the present invention structural representation, in conjunction with Fig. 2, the present invention also proposes a kind of control method of solar cell charge-discharge controller, comprises the solar panels 1, charging control circuit 2, automatic locking K switch 1, battery pack 3, automatic locking K switch 2, the inverter 4 that connect successively; In described automatic locking switch 11, be provided with K switch 1-1, K1-2, K2-1, K1-2, and with relay J 1, the J2 of coil.
In the present invention, referring to Fig. 1 and Fig. 2, also comprise left photo resistance R1 and right photo resistance R2, one end of described left photo resistance R1 is connected with the anodal S+ of solar panels 1, the other end is connected with right photo resistance R2, central processing unit 8 respectively, the other end of described right photo resistance R2 is connected with solar panels 1 negative pole S-, and described control method comprises the following steps:
The first step, the discharge voltage of the strength signal of left photo resistance R1, right photo resistance R2 real-time sampling sunlight, the charging voltage of input detecting circuit 9 real-time sampling battery pack 3 and output detection circuit 6 real-time sampling battery pack 3, and after being transferred to central processing unit 8 and must processing by preset value, on keyboard and display circuit 7, show;
Second step, the magnitude of voltage of the battery pack 3 that central processing unit 8 collects according to output detection circuit 9, by preset processing, judge whether to open automatic locking K switch 2, make battery pack 3 electric discharges, powering load, otherwise turn-off automatic locking K switch 2, will not discharge, and enable battery backup;
The 3rd step, central processing unit 8 collects the magnitude of voltage of battery pack 3 according to input detecting circuit 9, by preset processing, judge whether to open automatic locking K switch 1, makes battery pack 3 in charged state, otherwise turn-offs automatic locking K switch 1, will not charge;
The 4th step, central processing unit 8 is according to the strength signal of left photo resistance R1, right photo resistance R2 real-time sampling sunlight, by preset processing,, judge whether or to disconnect self-lock switch device to battery backup charging.
As another kind of embodiment of the present invention, referring to Fig. 1, Fig. 2 and Fig. 3, in side circuit connects, in described second step and step 3, battery pack 3 and input detecting circuit 9, between output detection circuit 6, be also connected to bleeder circuit 60, bleeder circuit 90, bleeder circuit 60 carries out dividing potential drop by the discharge voltage of the battery pack of 24V 3 outputs, the voltage that the P60 separating is ordered is+12V, bleeder circuit 90 carries out dividing potential drop by the charging voltage of the battery pack of 24V 3 inputs, the voltage that the P90 separating is ordered is+12V, the voltage range that input detecting circuit 9 and output detection circuit 6 can detect is 0～+ 15V, after divider resistance, can reduce to detect voltage range, improve the accuracy detecting.
In the present invention, central processing unit 8 adopts AT89S52 single-chip microcomputer, the discharge voltage of battery pack 3 electric discharge output is lower than 6V, and the voltage that also output detection circuit 6 detected when central processing unit 8 is during lower than 12V, and the voltage that the P60 of dividing potential drop place is ordered is 6V, now, the P3.0 pin of central processing unit 8, to drive circuit 10 output low levels, through overdrive circuit 10, disconnects K2-1, the K1-2 of automatic locking K switch 2, battery pack 3 stops electric discharge, and this device can be enabled by use battery pack automatically to power supply, central processing unit 8 is according to left photo resistance R1, the strength signal of right photo resistance R2 real-time sampling sunlight, whether need immediately to battery pack 3 chargings that are disconnected, if do not needed, do not charge, the P3.0 pin of central processing unit 8 is to drive circuit 10 output low levels, through overdrive circuit 10, make the K1-1 of automatic locking K switch 1, K1-1 disconnects, if carry out battery pack 3 chargings, the P3.0 pin of central processing unit 8 is to drive circuit 10 output high level, through overdrive circuit 10, make the K1-1 of automatic locking K switch 1, K1-1 is closed, battery pack 3 is charged.When input detecting circuit 9 detection battery pack 3 are charged completely, can show and be full of piezoelectric voltage, the P3.0 pin of central processing unit 8, to drive circuit output low level, disconnects K1-1, the K1-1 of automatic locking K switch 1, and battery pack 3 completes charging operations.When standby electricity is worked with pond, for temporary transient idle battery pack 3, automatic locking switch 11, in off-state, has avoided battery to produce the phenomenon of trickle, backflow like this, has played the effect of protection battery pack.
The foregoing is only the preferred embodiment of invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. a solar cell charge-discharge controller, is characterized in that, comprises the solar panels, charging control circuit, automatic locking K switch 1, battery pack, automatic locking K switch 2, the inverter that connect successively;
In described automatic locking K switch 1, K2, be provided with K switch 1-1, K1-2, K2-1, K1-2, and with relay J 1, the J2 of coil;
Also comprise central processing unit, described central processing unit is connected with charging control circuit by input detecting circuit, and described central processing unit is also connected with inverter by output detection circuit; Described central processing unit is connected with display circuit with keyboard, also by drive circuit with J1 one end of automatic locking K switch 1, J2 one end of the negative electrode of diode D2, automatic locking K2, the negative electrode of diode D2 is connected respectively, the anode of described diode D1, D2, the other end of J1, J2 are connected with ground;
Also comprise left photo resistance R1 and right photo resistance R2, one end of described left photo resistance R1 is connected with the anodal S+ of solar panels, and the other end is connected with right photo resistance R2, central processing unit respectively, and the other end of described R2 is connected with solar energy negative pole S-.
2. a kind of solar cell charge-discharge controller as claimed in claim 1, is characterized in that, described battery pack is lead-acid battery, and rated voltage is 24V.
3. a kind of solar cell charge-discharge controller as claimed in claim 1, is characterized in that, described battery pack is at least 2 groups or two groups of in parallel or series connection.
4. a control method for solar cell charge-discharge controller, is characterized in that, comprises the solar panels, charging control circuit, automatic locking K switch 1, battery pack, automatic locking K switch 2, the inverter that connect successively; The other end of described R2 is connected with solar energy negative pole S-; In described automatic locking K switch 1, K2, be provided with K switch 1-1, K1-2, K2-1, K1-2, and with relay J 1, the J2 of coil;
Also comprise left photo resistance R1 and right photo resistance R2, one end of described left photo resistance R1 is connected with the anodal S+ of solar panels, the other end is connected with right photo resistance R2, central processing unit respectively, and the other end of described R2 is connected with solar energy negative pole S-, and described control method comprises the following steps:
The first step, the discharge voltage of the strength signal of left photo resistance R1, right photo resistance R2 real-time sampling sunlight, the charging voltage of input detecting circuit real-time sampling battery pack and output detection circuit real-time sampling battery pack, and after being transferred to central processing unit and must processing by preset value, on keyboard and display circuit, show;
Second step, the magnitude of voltage of the battery pack that central processing unit collects according to output detection circuit, by preset processing, judge whether to open automatic locking K switch 2, make battery power discharge, powering load, otherwise turn-off automatic locking K switch 2, will not discharge, and enable battery backup;
The 3rd step, central processing unit collects the magnitude of voltage of battery pack according to input detecting circuit, by preset processing, judge whether to open automatic locking K switch 1, makes battery pack 3 in charged state, otherwise turn-offs automatic locking K switch 1, will not charge;
The 4th step, central processing unit 8, according to the strength signal of left photo resistance R1, right photo resistance R2 real-time sampling sunlight, by preset processing, judges whether or to disconnect self-lock switch device to battery backup charging.
5. a kind of control method of solar cell charge-discharge controller as claimed in claim 4, it is characterized in that, the input detecting circuit described in described second step and between be also connected to bleeder circuit between output detection circuit in charge controller and the 3rd step and inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410307379.0A CN104124733A (en) | 2014-06-30 | 2014-06-30 | Control device and control method for charge and discharge of solar cell |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410307379.0A CN104124733A (en) | 2014-06-30 | 2014-06-30 | Control device and control method for charge and discharge of solar cell |
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| CN201410307379.0A Pending CN104124733A (en) | 2014-06-30 | 2014-06-30 | Control device and control method for charge and discharge of solar cell |
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Cited By (3)
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| CN107112797A (en) * | 2015-01-13 | 2017-08-29 | 松下知识产权经营株式会社 | Monitoring arrangement, monitoring system and the monitoring method of solar power generation equipment |
| CN110850616A (en) * | 2019-11-29 | 2020-02-28 | 上海天马微电子有限公司 | Display device |
| CN112087045A (en) * | 2020-09-10 | 2020-12-15 | 陕西疆晨信息科技有限公司 | A power supply method for towers based on differentiated backup power equipment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107112797A (en) * | 2015-01-13 | 2017-08-29 | 松下知识产权经营株式会社 | Monitoring arrangement, monitoring system and the monitoring method of solar power generation equipment |
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| CN110850616A (en) * | 2019-11-29 | 2020-02-28 | 上海天马微电子有限公司 | Display device |
| CN112087045A (en) * | 2020-09-10 | 2020-12-15 | 陕西疆晨信息科技有限公司 | A power supply method for towers based on differentiated backup power equipment |
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Application publication date: 20141029 |