CN202931006U - Small solar power system - Google Patents
Small solar power system Download PDFInfo
- Publication number
- CN202931006U CN202931006U CN 201220678070 CN201220678070U CN202931006U CN 202931006 U CN202931006 U CN 202931006U CN 201220678070 CN201220678070 CN 201220678070 CN 201220678070 U CN201220678070 U CN 201220678070U CN 202931006 U CN202931006 U CN 202931006U
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- storage battery
- output
- converting unit
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Abstract
The utility model relates to a power system, specifically to a small solar power system. The small solar power system comprises solar photovoltaic cells, a storage battery and a control circuit. The control circuit comprises a charging circuit and a switching control unit. The charging circuit comprises a rectifying unit and a direct-current converting unit. The rectifying unit is provided with an external alternating current power input end. Output of the direct-current converting unit is connected with the storage battery. Output of the rectifying unit is connected with an input end of the direct-current converting unit. Without the sun, or during power generation by an oil engine at night, redundant electric energy generated after alternating current from the oil engine undergoes rectification and DC-DC conversion through the charging circuit composed of the rectifying unit and the direct-current converting unit is used to charge the cells, thus fully utilizing energy sources.
Description
Technical field
The utility model relates to a kind of power-supply system, specifically a kind of small-sized solar power-supply system.
Background technology
Imbalance because electric power system is built often unsettled situation can occur at some electric power from far-off regions, and is as fluctuated in power failure or voltage; can not regular supply; indivedual areas even do not have supply of electric power, and have adopted hydro power generation, fail to enriching solar energy utilization.The electricity that oil machine is sent exceeds required power consumption sometimes, even part is furnished with solar power supply apparatus, the oil machine charge function is not set yet, and the waste that has caused the energy is arranged.
Summary of the invention
The purpose of this utility model is to provide in order to overcome the deficiencies in the prior art a kind of small-sized solar power-supply system, this system utilizes solar energy to charge to small battery when fine day, in the situation that unnecessary electric energy charges the battery also can utilize hydro power generation without the sun time, illumination was provided at night, perhaps charges to small hand held devices.
To achieve these goals, the utility model discloses a kind of small-sized solar power-supply system, comprise solar-energy photo-voltaic cell, storage battery and control circuit, it is characterized in that: described control circuit comprises charging circuit and switch control unit, described charging circuit comprises rectification unit and DC converting unit, described rectification unit is provided with the external ac power source input, and the output of described DC converting unit is connected with storage battery, and described rectification unit is exported with DC converting unit input and is connected.
This small-sized solar power-supply system is in the situation that without the sun, or when using hydro power generation at night, unnecessary electric energy charges the battery after over commutation and dc-dc conversion by the alternating current that the described charging circuit that comprises that rectification unit and DC converting unit form sends oil machine, takes full advantage of the energy.
As further setting of the present utility model, described control circuit also comprises inverter circuit, described inverter circuit comprises boosting unit and 50Hz inverter bridge circuit, and described boosting unit output is connected with the input of 50Hz inverter bridge circuit, and described 50Hz inverter bridge circuit output end is ac power output; After being provided with inverter circuit, this solar power supply system can also provide AC power except providing DC power supply.
Further arrange again as of the present utility model, described DC converting unit consists of for the Switching Power Supply that forms take UC3845 as core, described switch control unit is that the comparator circuit that forms of core and the relay controlled by comparator circuit output consist of by operational amplifier, whether described comparator circuit compares storage battery and a setting voltage, and control according to comparative result and by photovoltaic cell, storage battery is charged.Select UC3845 be core consist of Switching Power Supply can be so that structure be simpler, reliable operation can guarantee in time storage battery to be charged after comparator is set.
The utility model is described in further detail below in conjunction with drawings and the specific embodiments.
Description of drawings
Accompanying drawing 1 is the utility model specific embodiment system configuration schematic diagram;
Accompanying drawing 5 is utility model specific embodiment boosting unit electrical schematic diagram;
Accompanying drawing 6 is utility model specific embodiment 50Hz inverter bridge circuit electrical schematic diagram;
Embodiment
Specific embodiment
As shown in Figure 1, the small-sized solar power-supply system comprises solar-energy photo-voltaic cell 1, storage battery 2 and control circuit 3, described control circuit 3 comprises charging circuit and switch control unit, described charging circuit comprises rectification unit and DC converting unit, described rectification unit is provided with the external ac power source input, described DC converting unit output is connected with storage battery 2, and described rectification unit is exported with DC converting unit input and is connected.
As shown in Fig. 2-4, described DC converting unit is take UC3845 as core, and the Switching Power Supply of the peripheral cells compositions such as field effect transistor T1, transformer B1 and electric capacity, resistance, transformer B1's is secondary through being output as storage battery 2 chargings after diode D5 and electric capacity E4 rectification and filtering, also be serially connected with current sampling resistor Rx charging current in described rectification and filtering output circuit and sample, and by the feedback circuit that is consisted of by triode T2-T4, photoelectrical coupler U2A, U2B, voltage-stabiliser tube U 3 and resistance etc., charging current and voltage are limited.described switch control unit is the comparator circuit that core forms by operational amplifier U5B, comparator circuit output drives through the follower that operational amplifier U5A consists of the relay J 1B that triode T3 controls, described comparator circuit compares storage battery 2 and a setting voltage, and control according to comparative result and whether charged by 1 pair of storage battery 2 of photovoltaic cell, setting voltage inputs to the comparator circuit in-phase input end by solar-energy photo-voltaic cell 1 after three terminal regulator U4 and voltage stabilizing didoe Z3 voltage stabilizing, storage battery 2 voltages input to the comparator circuit inverting input through after dividing potential drop.
as Fig. 5, shown in 6, can also provide AC power in order to make this solar power supply system except providing DC power supply, described control circuit 3 also comprises inverter circuit, described inverter circuit comprises boosting unit and 50Hz inverter bridge circuit, described boosting unit is take pulse width modulator control integration circuit U 1(SG3525A) as core, drive high-power FET V1 and V2, and by step-up transformer B1, voltage is risen to approximately 310V, described boosting unit output is connected with the input of 50Hz inverter bridge circuit, described 50Hz inverter bridge circuit is equally take pulse width modulator control integration circuit U 2(SG3525A) as core, and consist of inverter bridge by high-power FET V3-V6 and triode V7 and V8 etc., output is ac power output.
Claims (3)
1. small-sized solar power-supply system, comprise solar-energy photo-voltaic cell, storage battery and control circuit, it is characterized in that: described control circuit comprises charging circuit and switch control unit, described charging circuit comprises rectification unit and DC converting unit, described rectification unit is provided with the external ac power source input, described DC converting unit output is connected with storage battery, and described rectification unit is exported with DC converting unit input and is connected.
2. small-sized solar power-supply system according to claim 1, it is characterized in that: described control circuit also comprises inverter circuit, described inverter circuit comprises boosting unit and 50Hz inverter bridge circuit, described boosting unit output is connected with the input of 50Hz inverter bridge circuit, and described 50Hz inverter bridge circuit output end is ac power output.
3. small-sized solar power-supply system according to claim 1, it is characterized in that: the Switching Power Supply formation of described DC converting unit for forming take UC3845 as core, described switch control unit is that the comparator circuit that forms of core and the relay controlled by comparator circuit output consist of by operational amplifier, whether described comparator circuit compares storage battery and a setting voltage, and control according to comparative result and by photovoltaic cell, storage battery is charged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220678070 CN202931006U (en) | 2012-12-06 | 2012-12-06 | Small solar power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220678070 CN202931006U (en) | 2012-12-06 | 2012-12-06 | Small solar power system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202931006U true CN202931006U (en) | 2013-05-08 |
Family
ID=48220916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220678070 Expired - Fee Related CN202931006U (en) | 2012-12-06 | 2012-12-06 | Small solar power system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202931006U (en) |
-
2012
- 2012-12-06 CN CN 201220678070 patent/CN202931006U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20181206 |