CN201336579Y - Photovoltaic accumulator charging controller with weak-light charging function - Google Patents
Photovoltaic accumulator charging controller with weak-light charging function Download PDFInfo
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- CN201336579Y CN201336579Y CNU200820205636XU CN200820205636U CN201336579Y CN 201336579 Y CN201336579 Y CN 201336579Y CN U200820205636X U CNU200820205636X U CN U200820205636XU CN 200820205636 U CN200820205636 U CN 200820205636U CN 201336579 Y CN201336579 Y CN 201336579Y
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- photovoltaic cell
- accumulator
- photovoltaic
- storage battery
- triode
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Abstract
The utility model relates to a photovoltaic accumulator charging controller with weak-light charging function, which comprises a photovoltaic cell voltage detecting unit used for detecting the voltage of a photovoltaic cell, an accumulator terminal voltage and current detecting unit used for detecting the terminal voltage and current of an accumulator, capacitors C used for charging the accumulator, a power switching tube K<0>, a hysteresis circuit of control power switching tube K<0>, a triode T<1> connected with the hysteresis circuit and a single chip microcomputer control system, wherein the output terminals of the photovoltaic cell voltage detecting unit and the accumulator terminal voltage and current detecting unit are connected with the input terminal of the single chip microcomputer control system, the output terminal of the single chip microcomputer control system is connected with the input terminal of the hysteresis circuit, the capacitors C are connected in parallel at the two ends of the photovoltaic cell in a way that one end of each capacitor C is connected with one end of the accumulator through the power switching tube K<0> and the other end thereof is connected with the other end of the accumulator, the base electrode of the power switching tube K<0> is connected with the collector electrode of the triode T<1>, the base electrode of the triode T<1> is connected with the output terminal of the hysteresis circuit, and the emitter electrode of the triode T<1> is grounded. The photovoltaic accumulator charging controller achieves the effect of both charging the accumulator under the condition of strong sunlight and effectively charging the lead-acid accumulator by use of the photovoltaic cell under the condition of weak sunlight, can increase the effective charging time of the photovoltaic cell, thereby increasing the generating capacity of the photovoltaic cell and reducing the recovery cycle of the system cost.
Description
Technical field
The present invention relates to generation of electricity by new energy control technology field, particularly a kind of under low light condition, photovoltaic cell belongs to the renovation technique of the photovoltaic storage battery charge controller with low light level charge function to the controller that storage battery charges.
Background technology
Existing photovoltaic charged method is various, mainly contains constant voltage charge, constant current charge, current limliting constant-voltage charge, quick charge etc.These mise-a-la-masse methods under the situation of solar irradiation intensity weak (low light level), all can not fine solution photovoltaic module to the effective problem of charging of storage battery.The power output of (generally in the morning before 9, after at 16 in afternoon or overcast and rainy) photovoltaic module is little under the low light level, and corresponding output current is also very little.During charge in batteries, effectively charging current is generally had relatively high expectations, so under the low light level, photovoltaic module can not effectively charge to storage battery basically.
The utility model content
The purpose of this utility model is to consider the problems referred to above and provides a kind of under low light condition, the photovoltaic storage battery charge controller with low light level charge function that photovoltaic cell charges to storage battery.The utility model is implemented under the low light level state the effective charging to storage battery, prolongs the effective charging interval of photovoltaic cell to storage battery, improves the energy output of photovoltaic cell, guarantees to provide effective charging current of storage battery, prolongs the effective run time of photovoltaic cell.
The technical solution of the utility model is: include the accumulator voltage of photovoltaic cell voltage detection unit, the terminal voltage that detects storage battery and electric current of the voltage height that detects photovoltaic cell and current detecting unit, the capacitor C that charges a battery, power switch pipe K
0, power controlling switching tube K
0Stagnant loop circuit, the triode T that is connected with stagnant loop circuit
1And single-chip computer control system, wherein the output of photovoltaic cell voltage detection unit and accumulator voltage and current detecting unit is connected with the input of single-chip computer control system, the output of single-chip computer control system is connected with the input of stagnant loop circuit, capacitor C is connected in parallel on the two ends of photovoltaic cell, and an end of capacitor C is by power switch pipe K
0Be connected with an end of storage battery, the other end of capacitor C is connected with the other end of storage battery, power switch pipe K
0Base stage by resistance and triode T
1Collector electrode connect triode T
1Base stage be connected triode T with the output of stagnant loop circuit
1Grounded emitter.
Above-mentioned stagnant loop circuit is made of operational amplifier.
Above-mentioned power switch pipe K
0Be PNP switching power tube or NPN switching power tube or field effect transistor.
The utility model is owing to adopt the structure that is used for the buffer memory electric capacity of accumulation of energy under the low light condition in the parallel connection of photovoltaic cell output, under the more weak situation of sunlight, the electric energy of photovoltaic cell is stored earlier, when the buffer capacitor energy stored, be that the terminal voltage of buffer capacitor is when reaching certain value, couple together by device for power switching and charge in batteries control section, realize storage battery is effectively charged; And under low light level mode of operation, the buffer capacitor energy stored, promptly the terminal voltage of buffer capacitor can be set; Compared with prior art, the utlity model has following characteristics:
The sampled value of voltage, electric current was exported the power controlling switching device when 1) the utility model was charged according to photovoltaic array output open circuit voltage and photovoltaic array by single-chip computer control system, realization is to the tracking of photovoltaic cell Maximum Power Output, realizes under the strong operating state of sunlight the effective control to charge in batteries;
2) the utility model is realized the single-chip computer control system dormancy under low light level state, can reduce the energy loss of system, by low light level control circuit, realizes the effective charging control to storage battery under the situation of finite energy.
When the utility model can be realized charge in batteries under the strong situation of sun light intensity, also can be implemented under the more weak situation of sunlight, make full use of the effective charging of photovoltaic cell realization to lead acid accumulator, improve effective charging operating time of photovoltaic cell, further improve the energy output of photovoltaic cell, the return period of reducing system cost.The utility model is that a kind of design is ingenious, function admirable, the convenient and practical photovoltaic storage battery charge controller with low light level charge function.
Description of drawings
Fig. 1 is a schematic diagram of the present utility model.
Embodiment
Embodiment:
Schematic diagram of the present utility model includes the photovoltaic cell voltage detection unit 1 of the voltage height that detects photovoltaic cell 3, terminal voltage and the accumulator voltage of electric current and capacitor C, the power switch pipe K that current detecting unit 2, accumulators 4 charge of detection storage battery 4 as shown in Figure 1
0, power controlling switching tube K
0Stagnant loop circuit 5, the triode T that is connected with stagnant loop circuit 5
1And single-chip computer control system 6, wherein the output of photovoltaic cell voltage detection unit 1 and accumulator voltage and current detecting unit 2 is connected with the input of single-chip computer control system 6, the output of single-chip computer control system 6 is connected with the input of stagnant loop circuit 5, capacitor C is connected in parallel on the two ends of photovoltaic cell 3, and an end of capacitor C is by power switch pipe K
0Be connected with an end of storage battery 4, the other end of capacitor C is connected with the other end of storage battery 4, power switch pipe K
0Base stage by resistance and triode T
1Collector electrode connect triode T
1Base stage be connected triode T with the output of stagnant loop circuit 5
1Grounded emitter.In addition, power switch pipe K
0And also be connected with inductance L between the storage battery 4, storage battery 4 two ends also are connected with diode D
0
In the present embodiment, above-mentioned stagnant loop circuit 5 is formed by some operational amplifier serial connections.In the present embodiment, the loop circuit 5 that stagnates is formed by 2 operational amplifier serial connections.
Above-mentioned power switch pipe K
0Be PNP switching power tube or NPN switching power tube or field effect transistor.In the present embodiment, power switch pipe K
0Be the PNP switching power tube.
Operation principle of the present utility model is as follows: detect the voltage photovoltaic cell voltage detection unit 1 just and terminal voltage and the accumulator voltage of electric current and the output access single-chip computer control system 6 of current detecting unit 2 of detection storage battery 4 of photovoltaic cell 3, single-chip computer control system 6 is differentiated photovoltaic cells 3 and whether is worked in low light level operating state.When photovoltaic cell 3 is in low light level operating state, single-chip computer control system 6 is in resting state, its output control terminal u
cBe high-impedance state, at this moment power switch pipe K
0Control by the stagnant loop circuit 5 that operational amplifier constitutes.When the terminal voltage of capacitor C was hanged down, the loop circuit 5 that stagnates exported T to
1The voltage of base stage is low level, power switch pipe K
0Turn-off, charge to capacitor C by photovoltaic cell 3; When the terminal voltage of capacitor C and photovoltaic cell 3 surpassed set point, the loop circuit 5 that stagnates exported T to
1The voltage of base stage is high level, makes power switch pipe K
0Conducting is sent to storage battery 4 to the capacitor C energy stored.At switching tube K
0Conduction period, guaranteeing provides effective charging current of storage battery 4, thereby is implemented under the low light level state effective charging of storage battery 4, prolongs effective charging interval of 3 pairs of storage batterys 4 of photovoltaic cell, improves the energy output of photovoltaic cell.
Claims (3)
1, a kind of photovoltaic storage battery charge controller with low light level charge function is characterized in that including the photovoltaic cell voltage detection unit (1) of the voltage height that detects photovoltaic cell (3), terminal voltage and the accumulator voltage of electric current and capacitor C, the power switch pipe K that current detecting unit (2), accumulators (4) charge of detection storage battery (4)
0, power controlling switching tube K
0Stagnant loop circuit (5), the triode T that is connected with stagnant loop circuit (5)
1And single-chip computer control system (6), wherein the output of photovoltaic cell voltage detection unit (1) and accumulator voltage and current detecting unit (2) is connected with the input of single-chip computer control system (6), the output of single-chip computer control system (6) is connected with the input of stagnant loop circuit (5), capacitor C is connected in parallel on the two ends of photovoltaic cell (3), and an end of capacitor C is by power switch pipe K
0Be connected with an end of storage battery (4), the other end of capacitor C is connected with the other end of storage battery (4), power switch pipe K
0Base stage by resistance and triode T
1Collector electrode connect triode T
1Base stage be connected triode T with the output of stagnant loop circuit (5)
1Grounded emitter.
2, the photovoltaic storage battery charge controller with low light level charge function according to claim 1 is characterized in that above-mentioned stagnant loop circuit (5) is formed by some operational amplifier serial connections.
3, the photovoltaic storage battery charge controller with low light level charge function according to claim 1 is characterized in that above-mentioned power switch pipe K
0Be PNP switching power tube or NPN switching power tube or field effect transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820205636XU CN201336579Y (en) | 2008-12-19 | 2008-12-19 | Photovoltaic accumulator charging controller with weak-light charging function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820205636XU CN201336579Y (en) | 2008-12-19 | 2008-12-19 | Photovoltaic accumulator charging controller with weak-light charging function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201336579Y true CN201336579Y (en) | 2009-10-28 |
Family
ID=41288241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820205636XU Expired - Fee Related CN201336579Y (en) | 2008-12-19 | 2008-12-19 | Photovoltaic accumulator charging controller with weak-light charging function |
Country Status (1)
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2489498A (en) * | 2011-03-31 | 2012-10-03 | Nexus Alpha Low Power Systems Ltd | A battery charger and method using an irregular power source such as a solar panel and which comprises super-capacitors. |
| CN102723744A (en) * | 2011-03-29 | 2012-10-10 | 力博特公司 | UPS module and UPS system |
| CN101834458B (en) * | 2010-05-10 | 2012-10-17 | 重庆大学 | Photovoltaic maximum energy collection device based on dynamic topological structure and method thereof |
| CN103001262A (en) * | 2011-09-08 | 2013-03-27 | 常州信息职业技术学院 | Solar-energy and wind-energy charger |
| CN101728861B (en) * | 2010-01-25 | 2015-03-11 | 李培芳 | Deep discharge zero-power solar photovoltaic controller |
| CN102723744B (en) * | 2011-03-29 | 2016-12-14 | 力博特公司 | A kind of UPS module and ups system |
| CN107887957A (en) * | 2017-12-26 | 2018-04-06 | 四川璧虹众杰科技有限公司 | Charging circuit and charging equipment |
| CN109138624A (en) * | 2018-09-21 | 2019-01-04 | 成都凡米科技有限公司 | A kind of novel self-powered intelligent door lock |
-
2008
- 2008-12-19 CN CNU200820205636XU patent/CN201336579Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101728861B (en) * | 2010-01-25 | 2015-03-11 | 李培芳 | Deep discharge zero-power solar photovoltaic controller |
| CN101834458B (en) * | 2010-05-10 | 2012-10-17 | 重庆大学 | Photovoltaic maximum energy collection device based on dynamic topological structure and method thereof |
| CN102723744A (en) * | 2011-03-29 | 2012-10-10 | 力博特公司 | UPS module and UPS system |
| CN102723744B (en) * | 2011-03-29 | 2016-12-14 | 力博特公司 | A kind of UPS module and ups system |
| GB2489498A (en) * | 2011-03-31 | 2012-10-03 | Nexus Alpha Low Power Systems Ltd | A battery charger and method using an irregular power source such as a solar panel and which comprises super-capacitors. |
| CN103001262A (en) * | 2011-09-08 | 2013-03-27 | 常州信息职业技术学院 | Solar-energy and wind-energy charger |
| CN107887957A (en) * | 2017-12-26 | 2018-04-06 | 四川璧虹众杰科技有限公司 | Charging circuit and charging equipment |
| CN109138624A (en) * | 2018-09-21 | 2019-01-04 | 成都凡米科技有限公司 | A kind of novel self-powered intelligent door lock |
| CN109138624B (en) * | 2018-09-21 | 2024-02-09 | 成都凡米科技有限公司 | Novel self-powered intelligent door lock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091028 Termination date: 20101219 |