CN2528144Y - High efficient solar and electric energy converter - Google Patents

Abstract

The utility model belongs to the device in which the low-voltage DC power of solar panels and or batteries can be converted to the AC power, which comprises a solar panel, a battery, at least one front pole in which the low-voltage DC power of a solar panel and or a battery can be converted to the high-voltage of 264V, and a rear pole in which the high voltage of the front pole can be converted to the AC voltage of 220V 50HZ. The components applied in the front and rear poles are the conventional components, and the interfaces are provided between the front and rear poles for the connection. A plurality of front poles can be connected to a rear pole through an interface. Therefore, the solar power converter with different power output can be easily obtained.

Description

The high-efficiency solar device for converting electric energy

The utility model relate to a kind of can be with solar panel or/and the dc low-voltage electricity of storage battery be transformed into the device of alternating current.

Traditional device for converting solar energy uses common silicon steel sheet to make, and not only consumptive material, but also heavy and efficient is low slatterned the electric energy of limited solar panel and storage battery meaninglessly.Development along with high-frequency element, people begin to make the high frequency solar converter with new unit, storage battery, one that this converter has solar panel usually, store the electric energy that solar panel generates with solar panel or/and the dc low-voltage of storage battery is transformed into the prime of 264V high pressure becomes the 220V50HZ alternating voltage with a voltage transition with prime back level, prime will be used special-purpose pulsewidth integrated manipulator ST3845, and the back level will be used special-purpose copped wave integrated manipulator BD2001N.Yet in the ordinary course of things, these dedicated devices all are difficult for obtaining, and are direct-connected between the prime of above-mentioned high frequency solar converter and the back level, can't form the solar converter of multiple power output with the need quickly and easily.

Task of the present utility model provides the conversion equipment of solar energy-electric energy efficiently that multiple power output was made, can be formed easily to a kind of conventional element.

Task of the present utility model is finished like this: the utility model also has solar panel, be used to store the electric energy that solar panel generates storage battery, at least one with solar panel or/and the dc low-voltage of storage battery is transformed into the prime of 264V high pressure and the back level that high pressure with prime is transformed into the 220V50HZ alternating voltage by high frequency conversion, the element that uses in prime and the back level is conventional elements such as NE555 integrated circuit, field effect transistor, controllable silicon, triode, resistor, capacitor, prime with after grade between have interface to be connected; Prime comprises that a dc low-voltage with storage battery is transformed into the high-frequency impulse generation drive circuit of high-frequency pulse voltage; one is connected to the power amplification booster circuit that high-frequency impulse generation drive circuit carries out its low pressure high-frequency pulse current of sending here power amplification and boosts afterwards; one is connected to rectification buffering output circuit and under-voltage overcurrent and overheating protection circuit that high-frequency impulse generation drive circuit cuts out from power amplification booster circuit reception short-circuit signal that the power amplification booster circuit is rectified into its high-frequency and high-voltage of sending 264V50HZ voltage afterwards; the power amplification booster circuit is connected between high-frequency impulse generation drive circuit and the rectification buffering output circuit; the back level comprises a copped wave drive circuit that promotes chopper circuit work from high-frequency impulse generation drive circuit input signal; 264V high pressure that rectification is cushioned output circuit output is transformed into the bridge-type chopper circuit of 220V50HZ alternating voltage and one and adjusts the serial regulating circuit that pulse duration after the copped wave makes output voltage stabilization, and the bridge-type chopper circuit is connected between copped wave drive circuit and the serial regulating circuit.

Because the utility model utilizes the NE555 integrated circuit, field effect transistor, controllable silicon, triode, resistor, conventional element such as capacitor is formed each circuit, there is interface to be connected between prime and the back level, thereby it is simple to have a circuit, low in energy consumption, the advantage that efficient is high, the voltage stabilizing circuit of back level can be exported the stable alternating voltage of peak value 264V effective value 220V, and the volume of device is little, in light weight, can utilize simple power expansion method to be connected with the back level again after with a plurality of prime parallel connections, thereby generate the series of high efficiency solar converter of multiple power outputs such as ten watts to tens of kilowatts by the interface between the level of front and back.

Below in conjunction with drawings and Examples the utility model is described in further detail.

Fig. 1 is the utility model structured flowchart.Fig. 2 is a schematic diagram of forming high-power converter with level behind a plurality of primes of the present utility model and.Fig. 3 is the electrical schematic diagram of an embodiment of the utility model.

As seen from Figure 1, the utility model is made up of solar panel 1, storage battery 2, prime 3 and back level 4, as seen from Figure 3, prime 3 of the present utility model comprises high-frequency impulse generation drive circuit, power amplification booster circuit, rectification buffering output circuit and under-voltage overcurrent and overheating protection circuit; The back level comprises copped wave drive circuit, bridge-type chopper circuit and serial regulating circuit.Wherein, high-frequency impulse generation drive circuit mainly is made up of peripheral cells such as integrated circuit (IC) 2, triode BG1, BG2, diode D3, transformer B1 and resistor R 7, R8, R9, R10, capacitor C6, C7, C8, C9, C10, C11, C12, IC2 is NE555 time-base integrated circuit circuit commonly used, be used as the humorous multivibrator of self-excitation at this, R8, C9 determine frequency of oscillation, generally transfer to 33KC, 4 pin are preferential zero setting end, during electronegative potential, 3 pin zero setting, operate as normal during high potential, 3 pin output 33KC pulse square wave.Triode BG1, BG2 are connected into the emitter-base bandgap grading delivery outlet; BG1 conducting when 3 pin high potentials, BG2 ends, and power supply charges to C11, C12 through C, the E utmost point, the elementary of B1 of BG1; BG2 conducting when 3 pin electronegative potentials, BG1 ends, and the electricity that C11, C12 filled is elementary through B1, the discharge of the E of BG2, the C utmost point, and what the B1 primary flow was crossed is the 33KC AC square wave current.B1 transformation ratio 2.2, the ac square wave of elementary about 6V is delivered to the power amplification booster circuit driving power amplifier tube of back through the B1 two groups of opposite 13V square-wave voltages of output phase that boost.This high-frequency impulse generation drive circuit is simpler than common positive and negative two groups of direct-coupled drive circuits of direct voltage, and can not cause power tube to mislead because of fault; With the drive circuit of common change high frequency pulsewidth relatively, this drive circuit because grid is added with back-pressure, can reduces pipe greatly and consume when power tube turn-offs.

The power amplification booster circuit mainly is made up of field effect transistor VT1, VT2, diode D5, D6, transformer B2 and resistor R 11, R12, R15, peripheral cells such as R16 capacitor C14, C15, two groups of 13V ac square-wave voltages that the transformer B1 output phase of high-frequency impulse generation drive circuit is opposite drive field effect transistor VT1, VT2 respectively and make push-pull power amplifier, the grid of VT1 is the timing conducting, and the grid of VT2 ends for negative simultaneously; The grid of VT1 ends when being negative, and the grid of VT2 is positive conducting simultaneously, and the R11 in the grid G loop, R12 are used to eliminate issuable parasitic oscillation, and R13, the R14 of string in the grid G loop is used for limiting rising, the fall off rate of electric current.Because the corresponding levels work in low-voltage, current state, so select the power field effect pipe of 60V200A for use, its on state resistance is less than 0.006 Europe, and ID reaches 15 watts of 50 ampere-hour pipes consumptions, and power output is 600 watts during 12 volts of supply voltages, and efficient is more than or equal to 97% at this moment.

Rectification buffering output circuit mainly is made up of bridge rectifier D A, controllable silicon VTH1, resistor R 20, R21, R22, R23, elements such as capacitor C16, C17; low-voltage, high-current boosts to 264V after the DA bridge is whole through B2, and positive pole exports the filter capacitor positive pole to through the output of protective resistance R20 to D point.Negative pole output is delivered to the S point through R23, controllable silicon VTH1 etc.Add circuit and can reduce the influence of the overcurrent that when starting, causes because of load cold conditions or filter capacitor charging current foldback circuit.Add that device can start with 100% load behind this circuit, 150% is loaded to short circuit can both reliably protecting, no component wear.

Under-voltage overcurrent and overheating protection circuit mainly is made up of peripheral cells such as triode BG3, integrated circuit (IC) 1, transformer B4, bridge rectifier D D, temperature detect switch (TDS) K2, diode D4 and resistor R 1, R2, R3, R4, R5, R6, R17, R18 capacitor C1, C2, C3, C4, C5, C13; IC1 adopts NE555 and is connected into bistable circuit; trigger zero setting when the current potential of 6 pin is higher than 8V, trigger when 2 pin current potentials are lower than 4V and put 1.BG3 is the supply voltage detector tube, when supply voltage 11V,, supplies with base stage and is slightly larger than emitter voltage of voltage regulation 5V and adds base stage pressure drop 0.7V altogether during the voltage of 5.7V through R1, R2, R3 dividing potential drop, and the BG3 conducting, the C pole tension is less than 8V, and D2 ends.C2, C3 are used for the bypass high-frequency interferencing signal.B4 is the inspection convertor transformer, the electric current that it will flow through L41 changes to boost 100 times and changes voltage through the direct current that the DD bridge is whole, C13 filtering becomes 0-10V, through the output of R17, R18 dividing potential drop, deliver to 6 pin of IC1 through isolating diode D4, adjust R18 make output voltage values when rated current less than 8V.K2 is a temperature detect switch (TDS) on the radiator that is installed in VT1, VT2.When closing a switch K, 2 pin of IC1 are because the effect voltage of C4 can not suddenly change, and IC1 puts 1,3 pin high potential, IC2, IC3 operate as normal.2 pin progressively rise to 4V through the C4 charging.6 pin such as Triggerless be operate as normal then.Reduce to 10.5V when generation is under-voltage as supply voltage, then the BG3 base voltage is less than 5.7V, and BG3 ends, and the C electrode potential is greater than 8V, and the D2 conducting triggers 6 pin, and IC1 puts 0,3 pin output electronegative potential, and IC2, IC3 quit work, and the complete machine power tube all ends.When generation was overheated, temperature detect switch (TDS) K2 opened, and BG3 does not have base voltage to be ended, and acts on the same; When the high pressure output overcurrent takes place when, then D4 be transported to 6 pin voltage greater than 8V, trigger IC1 and put 0, effect is with aforementioned.After the triggering, must open K switch and wait for that C4 is discharged to less than starting behind the 4V.

The copped wave drive circuit mainly is made up of peripheral peripheral cells such as integrated circuit (IC) 3, triode BG4, BG5, transformer B3 and resistor R 24, R25, capacitor C18, C19, C20, and its operation principle is identical with high-frequency impulse generation drive circuit.It is 50HZ that change C18, R25 make the pulse square wave of 3 pin output, and four groups of B3 output exchange the bridge-type chopper circuits that the 12V square-wave voltages drive VT3, VT4, four high pressure field effect transistor compositions such as VT5, VT6.During positive half cycle, L31, L34 homophase, the grid of VT3, VT6 adds the positive voltage conducting; L32, L33 antiphase, the grid of VT4, VT6 adds negative voltage and ends, the B point just, the A point is negative.During negative half period, L31, L34 homophase, the grid of VT3, VT6 adds negative voltage and ends; L32, L33 antiphase, the grid of VT4, VT5 adds the positive voltage conducting, and the B point is negative, and the A point is just.The B point directly as an end of output, export through serial regulating circuit to C point by the A point.

Serial regulating circuit mainly is made up of controllable silicon VTH2, VTH3, bridge rectifier D K, DL, diode D7, D8, D9, D10, D11, D14, D15, D16, triode BG6 and resistor R 30, R31, R32, R33, R34, R35, R36 capacitor C21, elements such as C22, C23, and it plays the pulse-width modulation voltage stabilizing.When the A point fills positive electricity by R30, R31 to C21 for timing, when this positive voltage rose to the trigger voltage of diac D11, the D11 conducting triggered the VTH3 conducting through D11, and positive current flows to load through D8, VTH3.The charge constant that changes C21, R30, R31 can change the turn on delay time of VTH3.When the A point fills negative electricity by R30, R31 to C21 when negative, when this negative voltage rose to the trigger voltage of diac D11, the D11 conducting triggered the VTH2 conducting through D11, and negative current flows to load through D7, VTH2.The charge constant that changes C21, R30, R31 can change the turn on delay time of VTH2.VTH2, VTH3 turn on delay time are long more, and the positive negative pulse stuffing of output is narrow more, and voltage effective value is low more.D14, D15 are the P521 Light Coupled Device, and BG6 is the output voltage detector tube, and R35 is used to regulate the stationary value of output voltage.

Therefore the element that uses in prime and the back level is conventional element, is connected by interfaces such as connector or binding posts between prime and the back grade.Can select components and parts, particularly select the parameter of VT1 to VT6 and B2 according to the power needs.In circuit of the present utility model, because driving part all adopts AC coupled, thereby mains switch all is located in the prime power circuit, and the current sinking of entire circuit is less than 3mA, much smaller than the self discharge electric current of storage battery behind the cut-off switch.The power output of device for converting solar energy shown in Figure 3 can be from tens watts to 500 watts; When need be, can be connected with level after with several primes as shown in Figure 2 greater than 500 watts output; When the output of 2 kilowatts to 11 kilowatts of needs, also can be by the circuit of level behind the principle appropriate change of the present utility model; When the battery voltage of series connection when reaching 264V, shouldn't prime, only need to insert under-voltage current foldback circuit in the back level, controllable silicon adds the incremental controllable silicon of one-level in the voltage stabilizing circuit, and VT3-VT6 uses the high-power IGBT device instead, and power output can reach tens of kilowatts.

Claims (2)

1; a kind of high-efficiency solar device for converting electric energy; comprise solar panel; store the storage battery of the electric energy of solar panel generation; at least one with solar panel or/and the dc low-voltage of storage battery is transformed into the prime of 264V high pressure and the back level that high pressure with prime is transformed into the 220V50HZ alternating voltage by high frequency conversion; it is characterized in that: the element that uses in prime and the back level is conventional element; there is interface to be connected between prime and the back level; prime comprises that the dc low-voltage with storage battery is transformed into the high-frequency impulse generation drive circuit of high-frequency pulse voltage; the power amplification booster circuit that the low pressure high-frequency pulse current that high-frequency impulse generation drive circuit is sent here carries out power amplification and boosts; the high-frequency and high-voltage that the power amplification booster circuit is sent is rectified into the rectification buffering output circuit of 264V50HZ voltage and can receives the under-voltage overcurrent and overheating protection circuit that short-circuit signal is closed high-frequency impulse generation drive circuit from the power amplification booster circuit; the power amplification booster circuit is connected between high-frequency impulse generation drive circuit and the rectification buffering output circuit; the back level comprises the copped wave drive circuit that promotes chopper circuit work from high-frequency impulse generation drive circuit input signal; the 264V high pressure that rectification is cushioned output circuit output is transformed into the bridge-type chopper circuit of 220V50HZ alternating voltage and the serial regulating circuit that the pulse duration after the adjustment copped wave makes output voltage stabilization, and the bridge-type chopper circuit is connected between copped wave drive circuit and the serial regulating circuit.

2; by the described high-efficiency solar device for converting electric energy of claim 1; it is characterized in that: high-frequency impulse generation drive circuit is mainly by integrated circuit (IC) 2; triode BG1; BG2; diode D3; transformer B1 and peripheral cell thereof are formed; IC2 is NE555 time-base integrated circuit commonly used; be used as the humorous multivibrator of self-excitation at this; the power amplification booster circuit is mainly by field effect transistor VT1; VT2; diode D5; D6; transformer B2 and peripheral cell thereof are formed; rectification buffering output circuit is mainly by bridge rectifier D A; controllable silicon VTH1; resistor; elements such as capacitor are formed; under-voltage overcurrent and overheating protection circuit is mainly by triode BG3; integrated circuit (IC) 1; transformer B4; bridge rectifier D D; elements such as temperature detect switch (TDS) K2 are formed; IC1 adopts NE555 and is connected into bistable circuit; the copped wave drive circuit is mainly by integrated circuit (IC) 3; triode BG4; BG5; transformer B3 and peripheral cell thereof are formed; VT3; VT4; VT5; four high pressure field effect transistor such as VT6 are formed the bridge-type chopper circuit, and serial regulating circuit is mainly by controllable silicon VTH2; VTH3; bridge rectifier D K; DL; diode D7; D8; D9; D10; D11; D14; D15; D16; triode BG6 and peripheral cell thereof are formed.

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