CN205283230U - Solar charge controller - Google Patents

Abstract

The utility model discloses a solar charge controller, including electric capacity C1, resistance R1, triode VT1, transformer T1, diode VT1 and electric capacity C2, electric capacity C1 one end is connecting resistance R1 respectively, resistance R2, electric capacity C1, transformer T1 coil L1 and solar cell panel, triode VT1 base is connected respectively to the resistance R1 other end, resistance R3 and triode VT2 collecting electrode, triode VT1 collecting electrode is the connecting resistance R2 and the transformer T1 coil L1 other end respectively, electric capacity C2 is connected to the resistance R3 other end, transformer T1 coil L2 is connected to the electric capacity C2 other end, triode VT1 projecting pole is connected respectively to the transformer T1 coil L2 other end, resistance R4, triode VT2 projecting pole, the electric capacity C1 other end and the solar cell panel other end. The utility model discloses solar charge controller can charge for stable voltage the voltage conversion of solar cell panel output for the group battery to have the overcharge protection function, circuit structure is very simple, and is small, easily carries, with low costs.

Description

A kind of solar charging controller

Technical field

This utility model relates to a kind of charge controller, specifically a kind of solar charging controller.

Background technology

Lithium battery is because having the advantage that long service life, stable performance and volume are little, it is widely used in the mobile equipment such as mobile phone, panel computer as energy-storage travelling wave tube, but the most function singleness of its charger, can only use commercial power charged, travelling in the wild, long-distance bus, train cannot obtain electric energy timely supplement, this kind of charger baby many uses chip is as controlling element simultaneously, thus increasing cost of manufacture and quiescent dissipation.

Development along with new forms of energy, solar recharging enters the sight line of people, but solaode is changing greatly due to sunlight in use, its internal resistance is higher again, therefore output voltage is unstable, output electric current is also little, and this is accomplished by charging for set of cells E with after a DC transfer circuit voltage of transformation.

Utility model content

The purpose of this utility model is in that to provide a kind of solar charging controller, with the problem solving to propose in above-mentioned background technology.

For achieving the above object, this utility model provides following technical scheme:

A kind of solar charging controller, including electric capacity C1, resistance R1, audion VT1, transformator T1, diode VT1 and electric capacity C2, described electric capacity C1 one end connects resistance R1 respectively, resistance R2, electric capacity C1, transformator T1 coil L1 and solar panel, the resistance R1 other end is connecting triode VT1 base stage respectively, resistance R3 and audion VT2 colelctor electrode, audion VT1 colelctor electrode connects resistance R2 and the transformator T1 coil L1 other end respectively, the resistance R3 other end connects electric capacity C2, electric capacity C2 other end connection transformer T1 coil L2, and the transformator T1 coil L2 other end is connecting triode VT1 emitter stage respectively, resistance R4, audion VT2 emitter stage, the electric capacity C1 other end and the solar panel other end, the resistance R4 other end is connecting triode VT2 base stage and diode VD2 positive pole respectively, and diode VD2 negative pole connects resistance R5 and resistance R6 respectively, and the resistance R5 other end connects diode VD1 negative pole respectively, electric capacity C3 and set of cells E positive pole, set of cells E negative pole connects the resistance R6 other end respectively, the electric capacity C3 other end and transformator T coil L3 ground connection, the transformator T coil L3 other end connects diode VD1 positive pole.

As this utility model further scheme: described diode VD2 is Zener diode.

Compared with prior art; the beneficial effects of the utility model are: the voltage that solar panel exports can be converted to stable voltage and charge to set of cells by this utility model solar charging controller; and there is charging protection function; circuit structure is very simple; volume is little; being easy to carry about with one, cost is low.

Accompanying drawing explanation

Fig. 1 is the circuit diagram of solar charging controller.

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments. Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.

Referring to Fig. 1, in this utility model embodiment, a kind of solar charging controller, including electric capacity C1, resistance R1, audion VT1, transformator T1, diode VT1 and electric capacity C2, described electric capacity C1 one end connects resistance R1 respectively, resistance R2, electric capacity C1, transformator T1 coil L1 and solar panel, the resistance R1 other end is connecting triode VT1 base stage respectively, resistance R3 and audion VT2 colelctor electrode, audion VT1 colelctor electrode connects resistance R2 and the transformator T1 coil L1 other end respectively, the resistance R3 other end connects electric capacity C2, electric capacity C2 other end connection transformer T1 coil L2, and the transformator T1 coil L2 other end is connecting triode VT1 emitter stage respectively, resistance R4, audion VT2 emitter stage, the electric capacity C1 other end and the solar panel other end, the resistance R4 other end is connecting triode VT2 base stage and diode VD2 positive pole respectively, and diode VD2 negative pole connects resistance R5 and resistance R6 respectively, and the resistance R5 other end connects diode VD1 negative pole respectively, electric capacity C3 and set of cells E positive pole, set of cells E negative pole connects the resistance R6 other end respectively, the electric capacity C3 other end and transformator T coil L3 ground connection, the transformator T coil L3 other end connects diode VD1 positive pole, described diode VD2 is Zener diode.

Operation principle of the present utility model is: referring to Fig. 1, audion VT1 is Switching Power Supply pipe, and it and T1, R1, R3, C2 etc. form self-excited oscillation circuit, and after adding solar panel, electric current is activated resistance R1 and flows to the base stage of VT1, makes VT1 turn on.

After VT1 conducting, transformator T1 coil L1 is just plus input direct voltage, VT1 collector current linear increase in L1, coil L2 produces induced voltage, makes VT1 obtain base stage for just, launch extremely negative positive feedback voltage, this voltage injects base current through C2, R3 to VT1 makes the collector current of VT1 increase further, and positive feedback produces avalanche process, makes VT1 saturation conduction, during VT1 saturation conduction, T1 stores magnetic energy by coil L1.

Meanwhile, induced voltage charges to C2, along with increasing of C2 charging voltage, VT1 base potential step-down gradually, when the base current of VT1 change can not meet its continue saturated time, VT1 exits entrance amplification region, saturation region.

After VT1 enters magnifying state, its collector current is declined by the maximum before magnifying state, produces induced voltage at L2, makes VT1 base current reduce, and its collector current reduces therewith, and positive feedback occurs avalanche process again, and VT1 ends rapidly.

After VT1 cut-off, the energy that transformator T1 stores is supplied to follow-up load, and what coil L3 produced voltage, after diode VD1 rectifying and wave-filtering, obtains DC voltage on C3 and charges to set of cells E.

When VT1 ends, the voltage of direct current supply input voltage and L2 sensing again through R1, R3 to C2 reverse charging, gradually step up VT1 base potential so that it is again turn on, upset reaches capacity state again, and circuit repeats vibration like this and goes down.

R5, R6, VD2, VT2 etc. form pressure limiting circuit, and to protect set of cells E not to be overcharged, here for 3.6V battery of mobile phone, its charging restriction voltage is 4.2V. In the charging process of battery, cell voltage is gradually increasing, when charging voltage is more than 4.2V, after R5, R6 dividing potential drop, Zener diode VD2 begins to turn on, VT2 is made to turn on, the shunting action of VT2 reduces the base current of VT1, thus reducing the collector current of VT1, has reached the effect of restriction output voltage. At this moment circuit stopped the large current charge to set of cells E, with small area analysis, the voltage of set of cells E is maintained 4.2V.

It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, and when without departing substantially from spirit of the present utility model or basic feature, it is possible to realize this utility model in other specific forms. Therefore, no matter from which point, embodiment all should be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims rather than described above, it is intended that all changes in the implication of the equivalency dropping on claim and scope included in this utility model. Any accompanying drawing labelling in claim should be considered as the claim that restriction is involved.

In addition, it is to be understood that, although this specification is been described by according to embodiment, but not each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, description should be made as a whole by those skilled in the art, and the technical scheme in each embodiment through appropriately combined, can also form other embodiments that it will be appreciated by those skilled in the art that.

Claims (2)

1. a solar charging controller, including electric capacity C1, resistance R1, audion VT1, transformator T1, diode VT1 and electric capacity C2, it is characterised in that described electric capacity C1 one end connects resistance R1 respectively, resistance R2, electric capacity C1, transformator T1 coil L1 and solar panel, the resistance R1 other end is connecting triode VT1 base stage respectively, resistance R3 and audion VT2 colelctor electrode, audion VT1 colelctor electrode connects resistance R2 and the transformator T1 coil L1 other end respectively, the resistance R3 other end connects electric capacity C2, electric capacity C2 other end connection transformer T1 coil L2, and the transformator T1 coil L2 other end is connecting triode VT1 emitter stage respectively, resistance R4, audion VT2 emitter stage, the electric capacity C1 other end and the solar panel other end, the resistance R4 other end is connecting triode VT2 base stage and diode VD2 positive pole respectively, and diode VD2 negative pole connects resistance R5 and resistance R6 respectively, and the resistance R5 other end connects diode VD1 negative pole respectively, electric capacity C3 and set of cells E positive pole, set of cells E negative pole connects the resistance R6 other end respectively, the electric capacity C3 other end and transformator T coil L3 ground connection, the transformator T coil L3 other end connects diode VD1 positive pole.

2. solar charging controller according to claim 1, it is characterised in that described diode VD2 is Zener diode.