A kind of solar DC electric power system
Technical field
The utility model relates to a kind of DC power-supply system that supplies the solar energy user to use, and particularly a kind ofly mains lighting supply is provided and/or is the DC power-supply system of portable sets such as mobile phone charging.
Background technology
Existing DC power supply apparatus is with the source of civil power as electric energy, not energy-conserving and environment-protective.In addition, existing DC power supply apparatus does not generally have intelligent lighting and management of charging and discharging, causes storage battery to can not get corresponding protection, influences its useful life.
The utility model content
The purpose of the utility model provide a kind of can solar energy as the DC power-supply system of energy source.
The technical scheme that the utility model adopts is: a kind of solar DC electric power system; Comprise solar panels and DC power supply apparatus; Said DC power supply apparatus comprises controller, battery charger, illumination driving circuit and power control switch; The input of said battery charger and the charging terminal electrical connection that is used to be connected solar panels or AC charging adapter; The output of said battery charger is connected with the positive electrical of battery; The negative pole of said battery is through electric weight testing circuit ground connection, and the output of said electric weight testing circuit is gathered port with the battery electric quantity of controller and is electrically connected, and the battery charge enable port of said controller is electrically connected with the Enable Pin of battery charger;
The positive pole of said battery is through illumination driving circuit and the light source splicing ear electrical connection that is used to be connected lighting source, and the illumination enable port of said controller is electrically connected with the Enable Pin of illumination driving circuit; And,
The switching signal input port of said controller is through power control switch ground connection.
Preferably; Said DC power supply apparatus also comprises double-colored relay indicating light; An indicator light in the double-colored relay indicating light is electrically connected between the first relay indicating light control port and ground of controller, and another indicator light is electrically connected between the second relay indicating light control port and the ground.
Preferably; The positive pole of said battery is electrically connected with one of them terminal of all light source splicing ears that are used to be connected lighting source through illumination driving circuit, and another terminal of all light source splicing ears all is electrically connected with the lighting current detection port of controller through current detection circuit.
Preferably, said DC power supply apparatus also is provided with the charging indicator light control port that is electrically connected on controller and the charging indicator light between the ground, and the indicator light that is full of between indicator light control port and the ground that is full of that is electrically connected on controller.
Preferably, said DC power supply apparatus is provided with battery-powered USB drive circuit, and the output of said USB drive circuit is electrically connected with USB interface, and the Enable Pin of said USB drive circuit is electrically connected with the USB of controller charging enable port.
Preferably, said USB interface is electrically connected with the USB current detecting port of controller through the USB current detection circuit.
The beneficial effect of the utility model is: the solar DC electric power system of the utility model as the circuit master control, has realized intelligent lighting and management of charging and discharging with controller (like single-chip microcomputer).This solar DC electric power system has charging, discharge is independent, the charge and discharge indication, and cross the function of putting protection.
Description of drawings
Fig. 1 is the internal circuit configuration sketch map of the DC power supply apparatus of the said solar DC electric power system of the utility model.
Embodiment
The solar DC electric power system of the utility model comprises solar panels and DC power supply apparatus; As shown in Figure 1; This DC power supply apparatus comprises controller U1, battery charger 1, illumination driving circuit 2 and power control switch K1; The input of this battery charger and charging terminal 4 electrical connections that are used to be connected solar panels or AC charging adapter; The output of this battery charger is connected with the positive electrical of battery BAT; The negative pole of this battery is through electric weight testing circuit ground connection, and the output of this electric weight testing circuit is gathered port P7 with the battery electric quantity of controller U1 and is electrically connected, and the battery charge enable port P6 of this controller U1 is electrically connected with the Enable Pin of battery charger 1; The positive pole of this battery BAT is through illumination driving circuit 2 and light source splicing ear 3 electrical connections that are used to be connected lighting source, and the illumination enable port P8 of this controller U1 is electrically connected with the Enable Pin of illumination driving circuit 2; The switching signal input port P1 of this controller U1 is through power control switch K1 ground connection.Solar DC electric power system for said structure; After the user triggers power control switch K1; Controller U1 is that may command illumination driving circuit 2 provides the dc lighting power supply for the light source that is connected on the light source splicing ear 3, in addition, the solar DC electric power system of this kind structure have battery charger and illumination driving circuit separate; Charging, the non-interfering characteristics of discharging; Detect cell voltage at controller U1 through the electric weight testing circuit and be lower than and put when point protection, will close illumination driving circuit 2, detect cell voltage at controller U1 through the electric weight testing circuit and be higher than when putting the protection point through its enable port P8 that throws light on; If the user triggers power control switch K1 again twice, controller U1 will start illumination driving circuit 2 once more through its enable port P8 that throws light on.
Electric weight testing circuit in the present embodiment comprises first resistance R 1, second resistance R 2 and first capacitor C 1; The series circuit of first resistance R 1 and first capacitor C 1 and the parallel circuits of second resistance R 2 are electrically connected between the negative pole and ground of battery BAT, and battery electric quantity is gathered port P7 and is electrically connected with potential point between first resistance R 1 and first capacitor C 1.
The DC power supply apparatus of the utility model also can comprise double-colored relay indicating light LED3; Adopt green relay indicating light and red relay indicating light in the present embodiment; Two indicator lights of double-colored relay indicating light LED3 are electrically connected on respectively between the first relay indicating light control port P3 and ground of controller U1; And second between relay indicating light control port P4 and the ground; Like this, after the user triggered power control switch, controller U1 just can control green relay indicating light when starting illumination driving circuit 2 bright; Accordingly, be lower than and put the protection point if controller U1 detects cell voltage, then controller U1 can control green relay indicating light and go out when close illumination driving circuit 2, and red relay indicating light is bright.
The positive pole of this battery BAT is electrically connected with one of them terminal of all light source splicing ears 3 that are used to be connected lighting source through illumination driving circuit 2, and another terminal of all light source splicing ears 3 all is electrically connected with the lighting current detection port P10 of controller U1 through current detection circuit, wherein; This current detection circuit is that voltage offers controller U1 with current conversion; Like this, controller U1 just can detect the total current of illumination, when the illumination total current surpasses set point; The solar DC electric power system will get into guard mode automatically; Close illumination driving circuit 2, and control above-mentioned green relay indicating light Chang Liang, red relay indicating light flicker.
The DC power supply apparatus of the utility model also can be provided with the charging indicator light control port P2 that is electrically connected on controller U1 and the charging indicator light LED1 between the ground; And be electrically connected on being full of of controller U1 and be full of indicator light LED2 between indicator light control port P5 and the ground; When it starts battery charger 1, together with the time control charging indicator light flicker indication, when controller U1 detects when being full of electricity through the electric weight testing circuit; It is bright to be full of indicator light together with time control, with the prompting user.
In addition; The DC power supply apparatus of the utility model also can be the portable set charging with USB interface; For this reason; This DC power supply apparatus is provided with the USB drive circuit 5 by battery BAT power supply, and the output of this USB drive circuit 5 is electrically connected with USB interface 6, and the Enable Pin of this USB drive circuit 5 is electrically connected with the USB charging enable port P9 of controller U1.This USB interface 6 also can be electrically connected with the USB current detecting port P11 of controller U1 through the USB current detection circuit, judging whether overrate of load circuit, surpassing when judging the load current overrate, will close USB drive circuit 5.
The solar panels of the utility model will be positioned over the place of not sheltering from sunshine in use, and make the one side of the photosurface of solar panels towards the solar radiation energy maximum as far as possible.