CN105071469A - Solar charging circuit - Google Patents
Solar charging circuit Download PDFInfo
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- CN105071469A CN105071469A CN201510483874.1A CN201510483874A CN105071469A CN 105071469 A CN105071469 A CN 105071469A CN 201510483874 A CN201510483874 A CN 201510483874A CN 105071469 A CN105071469 A CN 105071469A
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Abstract
The invention discloses a solar charging circuit, wherein a charging switch K9 comprises an N-channel metal oxide semiconductor (NMOS) tube Q9 and a diode D9, wherein an anode of the diode D9 is connected with a source of the NMOS tube Q9; a cathode of the diode D9 is connected with a drain of the NMOS tube Q9; a reverse connection protection switch K8 comprises an NMOS tube Q8 and a diode D8; the anode of the diode D8 is connected with the source of the NMOS tube Q8; the cathode of the diode D8 is connected with the drain of the NMOS tube Q8; the anode of a solar panel is connected with the anode of a storage battery; the cathode of the storage battery is connected with the drain of the NMOS tube Q9; grids of the NMOS tube Q9 and the NMOS tube Q8 are connected with a first output end of a drive circuit; the sources of the NMOS tube Q9 and the NMOS tube Q8 are connected with a second output end of the drive circuit; the drain of the NMOS tube Q8 is connected with the cathode of the solar panel; and a signal output end of a microprogrammed control unit (MCU) is connected with an input end of the drive circuit. According to the solar charging circuit, the design of the drive circuit of a solar controller is simplified; and the cost of the solar charging circuit is reduced.
Description
Technical field
The present invention relates to solar cell application field, be specifically related to a kind of solar charging circuit.
Background technology
Solar energy is a kind of novel energy of energy-saving and emission-reduction, and solar power system is widely used in remote rural area and electricity consumption inconvenient area.Controller for solar full name is solar charging/discharging controller, is for controlling multichannel solar cell array to charge in batteries and storage battery to the automatic control equipment of solar inverter load supplying in solar power system.Present stage, controller for solar was generally divided into three kinds, i.e. regular solar controller, PWM charge controller and MPPT charge controller.Wherein, PWM controller for solar use amount is maximum, is mainly used in small-power product.
At present, the metal-oxide-semiconductor of the anti-reverse protection switch of common PWM charge controller near battery positive voltage Wiring port needs the metal-oxide-semiconductor selecting electric current larger usually, cost is higher, and be that common drain is connected near the metal-oxide-semiconductor of charge switch of solar charging panel negative terminal port with the metal-oxide-semiconductor of anti-reverse protection switch, the source ground of the metal-oxide-semiconductor of charge switch, the source electrode of the metal-oxide-semiconductor of anti-reverse protection switch connects the negative pole of solar charging panel, two drive circuits are needed to control the conducting of the metal-oxide-semiconductor of charge switch and the metal-oxide-semiconductor of anti-reverse protection switch respectively and end to control charge in batteries, drive circuit is comparatively complicated.
Summary of the invention
For above-mentioned defect, embodiments providing a kind of solar charging circuit, to simplifying the design of controller for solar drive circuit, reducing the cost of solar charging circuit.
First aspect present invention discloses a kind of solar charging circuit, comprising: solar panel, storage battery, charge switch K9, anti-reverse protection switch K8, MCU, drive circuit, wherein:
Described charge switch K9 comprises NMOS tube Q9 and diode D9, and the positive pole of described diode D9 connects the source electrode of described NMOS tube Q9, and the negative pole of described diode D9 connects the drain electrode of described NMOS tube Q9; Described anti-reverse protection switch K8 comprises NMOS tube Q8 and diode D8, and the positive pole of described diode D8 connects the source electrode of described NMOS tube Q8, and the negative pole of described diode D8 connects the drain electrode of described NMOS tube Q8;
The positive pole of described solar panel connects the positive pole of described storage battery, the negative pole of described storage battery connects the drain electrode of described NMOS tube Q9, the grid of described NMOS tube Q9 is connected the first output of described drive circuit with the grid of described NMOS tube Q8, the source electrode of described NMOS tube Q9 is connected the second output of described drive circuit with the source electrode of described NMOS tube Q8, the drain electrode of described NMOS tube Q8 connects the negative pole of described solar panel; The signal output part of described MCU connects the input of described drive circuit;
Described drive circuit is for receiving the high level signal of described MCU transmission to control described NMOS tube Q9 and described NMOS tube Q8 conducting, and the low level signal receiving described MCU transmission ends to control described NMOS tube Q9 and described NMOS tube Q8.
In the first possible implementation of first aspect present invention, described drive circuit comprises+12V driving voltage, resistance R4, resistance R1, resistance R13 and resistance R24, triode Q11, triode Q1, diode D2, voltage stabilizing didoe ZD5, wherein:
The signal output part of described MCU connects the first end of the described resistance R4 in described drive circuit, and second end of described resistance R4 connects the first end of described resistance R14 and the base stage of described triode Q11, the grounded emitter of described triode Q11;
The collector electrode of described triode Q11 connects the base stage of described triode Q1, the emitter of described triode Q1 connects described+12V driving voltage, the collector electrode of described triode Q1 connects the first end of described resistance R1, second end of described resistance R1 connects the positive pole of described diode D2, the negative pole of described diode D2 connects the grid of described NMOS tube Q8, the grid of described NMOS tube Q9, the negative pole of described voltage stabilizing didoe ZD5 and the first end of described resistance R13, the positive pole of described voltage stabilizing didoe ZD5 is connected the source electrode of described NMOS tube Q8 and the source electrode of described NMOS tube Q9 with second end of described resistance R13.
In conjunction with the first possible implementation of first aspect present invention, in the implementation that first aspect present invention the second is possible, described drive circuit also comprises resistance R12, wherein:
The emitter of described triode Q11 connects the first end of described resistance R12, the second end ground connection of described resistance R12.
In conjunction with the implementation that first aspect present invention the second is possible, in the third possible implementation of first aspect present invention, described drive circuit also comprises resistance R3 and resistance R2, wherein:
The collector electrode of described triode Q11 connects the first end of described resistance R3, second end of described resistance R3 connects the first end of described resistance R2 and the base stage of described triode Q1, and second end of described resistance R2 is connected described+12V driving voltage with the emitter of described triode Q1.
In conjunction with the third possible implementation of first aspect present invention, in first aspect present invention the 4th kind of possible implementation, described drive circuit also comprises triode Q2 and resistance R11, wherein:
The base stage of described triode Q2 is connected second end of described resistance R1 with the first end of described resistance R11, the emitter of described triode Q2 connects the negative pole of described diode D2, and the collector electrode of described triode Q2 is connected second end of described resistance R13 with second end of described resistance R11;
Described triode Q2 and described resistance R11 forms discharge loop, under sending low level situation at described MCU to described drive circuit, consumes the electricity of the junction capacitance of described NMOS tube Q8 and the junction capacitance storage of NMOS tube Q9.
In conjunction with first aspect present invention the 4th kind of possible implementation, in first aspect present invention the 5th kind of possible implementation, described drive circuit also comprises electric capacity C6 and resistance R14, wherein:
The first end of described electric capacity C6 is connected the emitter of described triode Q11 with the first end of described resistance R14, second end of described electric capacity C6 is connected the first end of described resistance R12 with second end of described resistance R14;
Described electric capacity C6 and described resistance R14 forms filter circuit, for absorbing the interference that voltage fluctuation causes.
In conjunction with first aspect present invention to first aspect present invention the 5th kind of possible implementation; in first aspect present invention the 6th kind of possible implementation; described solar charging circuit also comprises resistance R5, resistance R15, voltage stabilizing didoe ZD2 and anti-reverse protection switch K10, wherein:
Described anti-reverse protection switch K10 comprises NMOS tube Q10 and diode D10, and the positive pole of described diode D10 connects the source electrode of described NMOS tube Q10, and the negative pole of described diode D10 connects the drain electrode of described NMOS tube Q10; The negative pole of described storage battery connects the drain electrode of described NMOS tube Q10, the positive pole of described solar panel is connected the first end of described resistance R5 with the positive pole of described storage battery, the grid of described NMOS tube Q10 connects the first end of second end of described resistance R5, the negative pole of described voltage stabilizing didoe and described resistance R15, the equal ground connection of the second end of the source electrode of described NMOS tube Q10, the positive pole of described voltage stabilizing didoe and described resistance R15.
In conjunction with first aspect present invention the 6th kind of possible implementation, in first aspect present invention the 7th kind of possible implementation, described solar charging circuit also comprises bi-directional voltage stabilizing diode ZD3, wherein:
The positive pole of described solar panel connects the first end of described bi-directional voltage stabilizing diode ZD3, and the second end of described bi-directional voltage stabilizing diode connects the negative pole of described solar panel.
In conjunction with first aspect present invention the 7th kind of possible implementation, in first aspect present invention the 8th kind of possible implementation, described solar charging circuit also comprises fuse F1, wherein:
The positive pole of described solar panel connects the first end of described fuse F1, and second end of described fuse F1 connects the positive pole of described storage battery.
In conjunction with first aspect present invention the 8th kind of possible implementation, in first aspect present invention the 9th kind of possible implementation, described triode Q1 and described triode Q2 is PNP type triode, and described triode Q11 is NPN type triode.
In the solar charging circuit of the embodiment of the present invention, on the one hand, NMOS tube Q8 common source in NMOS tube Q9 in charge switch K9 and anti-reverse protection switch K8, be equivalent to NMOS tube Q9 and NMOS tube Q8 common ground, so only need the drive singal of a drive circuit can control conducting and the cut-off of NMOS tube Q9 and NMOS tube Q8, two drive circuits are no longer needed to control NMOS tube Q9 and NMOS tube Q8 respectively, be conducive to the structure and the cost that simplify drive circuit, on the other hand, no longer connect the anti-reverse protection switch near the battery terminal negative in this solar charging circuit loop, be conducive to reducing charging circuit cost and energy loss.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of solar charging circuit that first embodiment of the invention provides;
Fig. 2 is the structural representation of a kind of solar charging circuit that second embodiment of the invention provides;
Fig. 2 .1 is pwm signal schematic diagram corresponding to the charging process be made up of soaking-bulk charge-floating charge that the embodiment of the present invention provides;
Fig. 3 is the structural representation of a kind of solar charging circuit that third embodiment of the invention provides;
Fig. 4 is the structural representation of a kind of solar charging circuit that fourth embodiment of the invention provides;
Fig. 5 is the structural representation of a kind of solar charging circuit that fifth embodiment of the invention provides;
Fig. 6 is the structural representation of a kind of solar charging circuit that sixth embodiment of the invention provides;
Fig. 7 is the structural representation of a kind of solar charging circuit that seventh embodiment of the invention provides;
Fig. 8 is the structural representation of a kind of solar charging circuit that eighth embodiment of the invention provides;
Fig. 9 is the structural representation of a kind of solar charging circuit that ninth embodiment of the invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The invention discloses a kind of solar charging circuit, to reducing the cost of solar charging circuit, simplifying the design of controller for solar drive circuit, being described in detail respectively below.
Refer to Fig. 1; Fig. 1 is the structural representation of a kind of solar charging circuit disclosed in the embodiment of the present invention; as shown in Figure 1, this solar charging circuit can comprise solar panel, storage battery, charge switch K9, anti-reverse protection switch K8, MCU, drive circuit, wherein:
Above-mentioned charge switch K9 comprises NMOS tube Q9 and diode D9, and the positive pole of diode D9 connects the source electrode of NMOS tube Q9, and the negative pole of diode D9 connects the drain electrode of NMOS tube Q9;
Above-mentioned anti-reverse protection switch K8 comprises NMOS tube Q8 and diode D8, and the positive pole of diode D8 connects the source electrode of NMOS tube Q8, and the negative pole of diode D8 connects the drain electrode of NMOS tube Q8;
The positive pole of above-mentioned solar panel connects the positive pole of storage battery, the negative pole of storage battery connects the drain electrode of NMOS tube Q9, the grid of NMOS tube Q9 is connected the first output of drive circuit with the grid of NMOS tube Q8, the source electrode of NMOS tube Q9 is connected the second output of drive circuit with the source electrode of NMOS tube Q8, the drain electrode of NMOS tube Q8 connects the negative pole of solar panel; Above-mentioned NMOS tube Q8 and above-mentioned NMOS tube Q9 are that common source is connected.
The signal output part of above-mentioned MCU connects the input of drive circuit;
The operation principle of the solar charging circuit in the embodiment of the present invention is: during charging, and MCU sends high level to control NMOS tube Q9 and NMOS tube Q8 conducting to drive circuit, and MCU sends low level to control NMOS tube Q9 and NMOS tube Q8 cut-off to drive circuit.
During specific implementation, MCU can send to drive circuit pwm signal to carry out charging current control to battery charging circuit, the process that this solar charging circuit charging process can be made up of soaking-bulk charge-floating charge, when to fill by force, the duty ratio of the pwm signal that MCU (as single-chip microcomputer) exports is close to 100%, now NMOS tube Q8 and NMOS tube Q9 be all duty ratio close to 100% conducting, the charging current average of charge circuit is assumed to be I
0; When entering bulk charge process, the duty ratio of the pwm signal that MCU exports can export about 50%, and now the conducting duty ratio of NMOS tube Q8 and NMOS tube Q9 is about 50%, and the electric current average charged a battery is about (I
0/ 2); When entering floating charge, the duty ratio of the pwm signal that MCU exports can be very little, and now NMOS tube Q8 and NMOS tube Q9 obtains very little conducting duty ratio, and the electric current average charged a battery is about (I
0/ 10).
In the solar charging circuit of the embodiment of the present invention, on the one hand, NMOS tube Q8 common source in NMOS tube Q9 in charge switch K9 and anti-reverse protection switch K8, be equivalent to NMOS tube Q9 and NMOS tube Q8 common ground, so only need the drive singal of a drive circuit can control conducting and the cut-off of NMOS tube Q9 and NMOS tube Q8, two drive circuits are no longer needed to control NMOS tube Q9 and NMOS tube Q8 respectively, be conducive to the structure and the cost that simplify drive circuit, on the other hand, no longer connect the anti-reverse protection switch near the battery terminal negative in this solar charging circuit loop, be conducive to reducing charging circuit cost and energy loss.
Refer to Fig. 2, Fig. 2 is the structural representation of solar charging circuit disclosed in second embodiment of the invention.Wherein, solar charging circuit shown in Fig. 2 is optimized the solar charging circuit shown in Fig. 1 to obtain, compared with the solar charging circuit shown in Fig. 1, drive circuit in solar charging circuit shown in Fig. 2 comprises+12V driving voltage, resistance R4, resistance R1, resistance R13 and resistance R24, triode Q11, triode Q1, diode D2, voltage stabilizing didoe ZD5, wherein:
The signal output part of MCU connects the first end of the resistance R4 in drive circuit, the first end of the second end contact resistance R14 of resistance R4 and the base stage of triode Q11, the grounded emitter of triode Q11; The base stage of the collector electrode connecting triode Q1 of triode Q11, the emitter of triode Q1 connects+12V driving voltage, the first end of the collector electrode contact resistance R1 of triode Q1, second end of resistance R1 connects the positive pole of diode D2, the negative pole of diode D2 connects the first end of the grid of NMOS tube Q8, the grid of NMOS tube Q9, the negative pole of voltage stabilizing didoe ZD5 and resistance R13, and the positive pole of voltage stabilizing didoe ZD5 is connected the source electrode of NMOS tube Q8 and the source electrode of NMOS tube Q9 with second end of resistance R13.
Solar charging circuit in the embodiment of the present invention, when MCU sends high level signal to drive circuit, triode Q11 in drive circuit and triode Q1 is all in saturation conduction state, electromotive force between the grid of NMOS tube Q8 and NMOS tube Q9 and source electrode is greater than the conducting voltage threshold value of NMOS tube Q8 and NMOS tube Q9, and NMOS tube Q8 and NMOS tube Q9 is all in conducting state.
Solar charging circuit in the embodiment of the present invention, when MCU sends low level signal to drive circuit, triode Q11 in drive circuit and triode Q1 is all in cut-off state, electromotive force between the grid of NMOS tube Q8 and NMOS tube Q9 and source electrode is less than the conducting voltage threshold value of NMOS tube Q8 and NMOS tube Q9, and NMOS tube Q8 and NMOS tube Q9 is all in cut-off state.
In specific implementation, during the pwm signal that MCU replaces to drive circuit transmission low and high level, form pwm signal schematic diagram corresponding to charging process as shown in Fig. 2 .1 by soaking-bulk charge-floating charge.
In the solar charging circuit of the embodiment of the present invention, on the one hand, NMOS tube Q8 common source in NMOS tube Q9 in charge switch K9 and anti-reverse protection switch K8, be equivalent to NMOS tube Q9 and NMOS tube Q8 common ground, so only need the drive singal of a drive circuit can control conducting and the cut-off of NMOS tube Q9 and NMOS tube Q8, two drive circuits are no longer needed to control NMOS tube Q9 and NMOS tube Q8 respectively, be conducive to the structure and the cost that simplify drive circuit, on the other hand, no longer connect the anti-reverse protection switch near the battery terminal negative in this solar charging circuit loop, be conducive to reducing charging circuit cost and energy loss.
Refer to Fig. 3, Fig. 3 is the structural representation of solar charging circuit disclosed in third embodiment of the invention.Wherein, the solar charging circuit shown in Fig. 3 is optimized the solar charging circuit shown in Fig. 2 to obtain, and compared with the solar charging circuit shown in Fig. 2, also comprises resistance R12 in the drive circuit in the solar charging circuit shown in Fig. 3, wherein:
The emitter of triode Q11 connects the first end of described resistance R12, the second end ground connection of described resistance R12.
In the solar charging circuit of the embodiment of the present invention, on the one hand, NMOS tube Q8 common source in NMOS tube Q9 in charge switch K9 and anti-reverse protection switch K8, be equivalent to NMOS tube Q9 and NMOS tube Q8 common ground, so only need the drive singal of a drive circuit can control conducting and the cut-off of NMOS tube Q9 and NMOS tube Q8, two drive circuits are no longer needed to control NMOS tube Q9 and NMOS tube Q8 respectively, be conducive to the structure and the cost that simplify drive circuit, on the other hand, no longer connect the anti-reverse protection switch near the battery terminal negative in this solar charging circuit loop, be conducive to reducing charging circuit cost and energy loss.
Refer to Fig. 4, Fig. 4 is the structural representation of solar charging circuit disclosed in fourth embodiment of the invention.Wherein, solar charging circuit shown in Fig. 4 is optimized the solar charging circuit shown in Fig. 3 to obtain, compared with the solar charging circuit shown in Fig. 3, the drive circuit in the solar charging circuit shown in Fig. 4 comprises goes back resistance R3 and resistance R2, wherein:
The first end of the collector electrode contact resistance R3 of triode Q11, the first end of the second end contact resistance R2 of resistance R3 and the base stage of triode Q1, second end of resistance R2 is connected+12V driving voltage with the emitter of triode Q1.
In the solar charging circuit of the embodiment of the present invention, on the one hand, NMOS tube Q8 common source in NMOS tube Q9 in charge switch K9 and anti-reverse protection switch K8, be equivalent to NMOS tube Q9 and NMOS tube Q8 common ground, so only need the drive singal of a drive circuit can control conducting and the cut-off of NMOS tube Q9 and NMOS tube Q8, two drive circuits are no longer needed to control NMOS tube Q9 and NMOS tube Q8 respectively, be conducive to the structure and the cost that simplify drive circuit, on the other hand, no longer connect the anti-reverse protection switch near the battery terminal negative in this solar charging circuit loop, be conducive to reducing charging circuit cost and energy loss.
Refer to Fig. 5, Fig. 5 is the structural representation of solar charging circuit disclosed in fifth embodiment of the invention.Wherein, solar charging circuit shown in Fig. 5 is optimized the solar charging circuit shown in Fig. 3 to obtain, compared with the solar charging circuit shown in Fig. 4, the drive circuit in the solar charging circuit shown in Fig. 5 also comprises triode Q2 and resistance R11, wherein:
Second end of the base stage of triode Q2 and the first end contact resistance R1 of resistance R11, the emitter of triode Q2 connects the negative pole of diode D2, second end of the collector electrode of triode Q2 and the second end contact resistance R13 of resistance R11;
Above-mentioned triode Q2 and above-mentioned resistance R11 forms discharge loop, under sending low level situation at MCU to drive circuit, consumes the electricity of the junction capacitance of NMOS tube Q8 and the junction capacitance storage of NMOS tube Q9.
In the solar charging circuit of the embodiment of the present invention, on the one hand, NMOS tube Q8 common source in NMOS tube Q9 in charge switch K9 and anti-reverse protection switch K8, be equivalent to NMOS tube Q9 and NMOS tube Q8 common ground, so only need the drive singal of a drive circuit can control conducting and the cut-off of NMOS tube Q9 and NMOS tube Q8, two drive circuits are no longer needed to control NMOS tube Q9 and NMOS tube Q8 respectively, be conducive to the structure and the cost that simplify drive circuit, on the other hand, no longer connect the anti-reverse protection switch near the battery terminal negative in this solar charging circuit loop, be conducive to reducing charging circuit cost and energy loss.
Refer to Fig. 6, Fig. 6 is the structural representation of solar charging circuit disclosed in sixth embodiment of the invention.Wherein, solar charging circuit shown in Fig. 6 is optimized the solar charging circuit shown in Fig. 5 to obtain, compared with the solar charging circuit shown in Fig. 5, the drive circuit in the solar charging circuit shown in Fig. 6 also comprises electric capacity C6 and resistance R14, wherein:
The emitter of the first end of electric capacity C6 and the first end connecting triode Q11 of resistance R14, the first end of second end of electric capacity C6 and the second end contact resistance R12 of resistance R14;
Electric capacity C6 and resistance R14 forms filter circuit, for absorbing the interference that voltage fluctuation causes.
In the solar charging circuit of the embodiment of the present invention, on the one hand, NMOS tube Q8 common source in NMOS tube Q9 in charge switch K9 and anti-reverse protection switch K8, be equivalent to NMOS tube Q9 and NMOS tube Q8 common ground, so only need the drive singal of a drive circuit can control conducting and the cut-off of NMOS tube Q9 and NMOS tube Q8, two drive circuits are no longer needed to control NMOS tube Q9 and NMOS tube Q8 respectively, be conducive to the structure and the cost that simplify drive circuit, on the other hand, no longer connect the anti-reverse protection switch near the battery terminal negative in this solar charging circuit loop, be conducive to reducing charging circuit cost and energy loss.
Refer to Fig. 7, Fig. 7 is the structural representation of solar charging circuit disclosed in seventh embodiment of the invention.Wherein, solar charging circuit shown in Fig. 7 is optimized the solar charging circuit shown in Fig. 6 to obtain; compared with the solar charging circuit shown in Fig. 6; solar charging circuit shown in Fig. 7 comprises resistance R5, resistance R15, voltage stabilizing didoe ZD2 and anti-reverse protection switch K10, wherein:
Anti-reverse protection switch K10 comprises NMOS tube Q10 and diode D10, and the positive pole of diode D10 connects the source electrode of NMOS tube Q10, and the negative pole of diode D10 connects the drain electrode of NMOS tube Q10; The negative pole of storage battery connects the drain electrode of NMOS tube Q10, the first end of the positive pole of solar panel and the positive pole contact resistance R5 of storage battery, the first end of second end of grid contact resistance R5 of NMOS tube Q10, the negative pole of voltage stabilizing didoe and resistance R15, the equal ground connection of the second end of the source electrode of NMOS tube Q10, the positive pole of voltage stabilizing didoe and resistance R15.
Described anti-reverse protection switch K10 is used for: when avoiding the positive pole of storage battery and negative pole to connect anti-, solar charging panel is to the infringement of controller, and now the controller part of whole controller does not have voltage, and MCU also quits work; After correctly connecting, controller can normally work again
In the solar charging circuit of the embodiment of the present invention, on the one hand, NMOS tube Q8 common source in NMOS tube Q9 in charge switch K9 and anti-reverse protection switch K8, be equivalent to NMOS tube Q9 and NMOS tube Q8 common ground, so only need the drive singal of a drive circuit can control conducting and the cut-off of NMOS tube Q9 and NMOS tube Q8, two drive circuits are no longer needed to control NMOS tube Q9 and NMOS tube Q8 respectively, be conducive to the structure and the cost that simplify drive circuit, on the other hand, no longer connect the anti-reverse protection switch near the battery terminal negative in this solar charging circuit loop, be conducive to reducing charging circuit cost and energy loss.
Refer to Fig. 8, Fig. 8 is the structural representation of solar charging circuit disclosed in eighth embodiment of the invention.Wherein, the solar charging circuit shown in Fig. 8 is optimized the solar charging circuit shown in Fig. 7 to obtain, and compared with the solar charging circuit shown in Fig. 7, the solar charging circuit shown in Fig. 8 also comprises bi-directional voltage stabilizing diode ZD3, wherein:
The positive pole of described solar panel connects the first end of described bi-directional voltage stabilizing diode ZD3, and the second end of described bi-directional voltage stabilizing diode connects the negative pole of described solar panel.
The electric current that described bi-directional voltage stabilizing diode ZD3 is used for flowing through between the drain electrode and grid of described NMOS tube Q8 and described NMOS tube Q9 is greater than predetermined threshold value; short circuit comprises the charge circuit of described NMOS tube Q8 and described NMOS tube Q9, thus protects described NMOS tube Q8 and described NMOS tube Q9.
In the solar charging circuit of the embodiment of the present invention, on the one hand, NMOS tube Q8 common source in NMOS tube Q9 in charge switch K9 and anti-reverse protection switch K8, be equivalent to NMOS tube Q9 and NMOS tube Q8 common ground, so only need the drive singal of a drive circuit can control conducting and the cut-off of NMOS tube Q9 and NMOS tube Q8, two drive circuits are no longer needed to control NMOS tube Q9 and NMOS tube Q8 respectively, be conducive to the structure and the cost that simplify drive circuit, on the other hand, no longer connect the anti-reverse protection switch near the battery terminal negative in this solar charging circuit loop, be conducive to reducing charging circuit cost and energy loss.
Refer to Fig. 9, Fig. 9 is the structural representation of solar charging circuit disclosed in ninth embodiment of the invention.Wherein, the solar charging circuit shown in Fig. 9 is optimized the solar charging circuit shown in Fig. 8 to obtain, and compared with the solar charging circuit shown in Fig. 8, the solar charging circuit shown in Fig. 9 also comprises fuse F1, wherein:
The positive pole of described solar panel connects the first end of described fuse F1, and second end of described fuse F1 connects the positive pole of described storage battery.
In the solar charging circuit of the embodiment of the present invention, on the one hand, NMOS tube Q8 common source in NMOS tube Q9 in charge switch K9 and anti-reverse protection switch K8, be equivalent to NMOS tube Q9 and NMOS tube Q8 common ground, so only need the drive singal of a drive circuit can control conducting and the cut-off of NMOS tube Q9 and NMOS tube Q8, two drive circuits are no longer needed to control NMOS tube Q9 and NMOS tube Q8 respectively, be conducive to the structure and the cost that simplify drive circuit, on the other hand, no longer connect the anti-reverse protection switch near the battery terminal negative in this solar charging circuit loop, be conducive to reducing charging circuit cost and energy loss.
Above a kind of solar charging circuit that the embodiment of the present invention provides is described in detail, apply specific case herein to principle of the present invention and be that execution mode is set forth, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, to sum up, this description should not be construed as limitation of the present invention.
Claims (10)
1. a solar charging circuit, is characterized in that, comprising: solar panel, storage battery, charge switch K9, anti-reverse protection switch K8, MCU, drive circuit, wherein:
Described charge switch K9 comprises NMOS tube Q9 and diode D9, and the positive pole of described diode D9 connects the source electrode of described NMOS tube Q9, and the negative pole of described diode D9 connects the drain electrode of described NMOS tube Q9; Described anti-reverse protection switch K8 comprises NMOS tube Q8 and diode D8, and the positive pole of described diode D8 connects the source electrode of described NMOS tube Q8, and the negative pole of described diode D8 connects the drain electrode of described NMOS tube Q8;
The positive pole of described solar panel connects the positive pole of described storage battery, the negative pole of described storage battery connects the drain electrode of described NMOS tube Q9, the grid of described NMOS tube Q9 is connected the first output of described drive circuit with the grid of described NMOS tube Q8, the source electrode of described NMOS tube Q9 is connected the second output of described drive circuit with the source electrode of described NMOS tube Q8, the drain electrode of described NMOS tube Q8 connects the negative pole of described solar panel; The signal output part of described MCU connects the input of described drive circuit;
Described drive circuit is for receiving the high level signal of described MCU transmission to control described NMOS tube Q9 and described NMOS tube Q8 conducting, and the low level signal receiving described MCU transmission ends to control described NMOS tube Q9 and described NMOS tube Q8.
2. solar charging circuit according to claim 1, it is characterized in that, described drive circuit comprises+12V driving voltage, resistance R4, resistance R1, resistance R13 and resistance R24, triode Q11, triode Q1, diode D2, voltage stabilizing didoe ZD5, wherein:
The signal output part of described MCU connects the first end of the described resistance R4 in described drive circuit, and second end of described resistance R4 connects the first end of described resistance R14 and the base stage of described triode Q11, the grounded emitter of described triode Q11;
The collector electrode of described triode Q11 connects the base stage of described triode Q1, the emitter of described triode Q1 connects described+12V driving voltage, the collector electrode of described triode Q1 connects the first end of described resistance R1, second end of described resistance R1 connects the positive pole of described diode D2, the negative pole of described diode D2 connects the grid of described NMOS tube Q8, the grid of described NMOS tube Q9, the negative pole of described voltage stabilizing didoe ZD5 and the first end of described resistance R13, the positive pole of described voltage stabilizing didoe ZD5 is connected the source electrode of described NMOS tube Q8 and the source electrode of described NMOS tube Q9 with second end of described resistance R13.
3. solar charging circuit according to claim 2, is characterized in that, described drive circuit also comprises resistance R12, wherein:
The emitter of described triode Q11 connects the first end of described resistance R12, the second end ground connection of described resistance R12.
4. solar charging circuit according to claim 3, is characterized in that, described drive circuit also comprises resistance R3 and resistance R2, wherein:
The collector electrode of described triode Q11 connects the first end of described resistance R3, second end of described resistance R3 connects the first end of described resistance R2 and the base stage of described triode Q1, and second end of described resistance R2 is connected described+12V driving voltage with the emitter of described triode Q1.
5. solar charging circuit according to claim 4, is characterized in that, described drive circuit also comprises triode Q2 and resistance R11, wherein:
The base stage of described triode Q2 is connected second end of described resistance R1 with the first end of described resistance R11, the emitter of described triode Q2 connects the negative pole of described diode D2, and the collector electrode of described triode Q2 is connected second end of described resistance R13 with second end of described resistance R11;
Described triode Q2 and described resistance R11 forms discharge loop, under sending low level situation at described MCU to described drive circuit, consumes the electricity of the junction capacitance of described NMOS tube Q8 and the junction capacitance storage of NMOS tube Q9.
6. solar charging circuit according to claim 5, is characterized in that, described drive circuit also comprises electric capacity C6 and resistance R14, wherein:
The first end of described electric capacity C6 is connected the emitter of described triode Q11 with the first end of described resistance R14, second end of described electric capacity C6 is connected the first end of described resistance R12 with second end of described resistance R14;
Described electric capacity C6 and described resistance R14 forms filter circuit, for absorbing the interference that voltage fluctuation causes.
7. the solar charging circuit according to any one of claim 1-6, is characterized in that, described solar charging circuit also comprises resistance R5, resistance R15, voltage stabilizing didoe ZD2 and anti-reverse protection switch K10, wherein:
Described anti-reverse protection switch K10 comprises NMOS tube Q10 and diode D10, and the positive pole of described diode D10 connects the source electrode of described NMOS tube Q10, and the negative pole of described diode D10 connects the drain electrode of described NMOS tube Q10; The negative pole of described storage battery connects the drain electrode of described NMOS tube Q10, the positive pole of described solar panel is connected the first end of described resistance R5 with the positive pole of described storage battery, the grid of described NMOS tube Q10 connects the first end of second end of described resistance R5, the negative pole of described voltage stabilizing didoe and described resistance R15, the equal ground connection of the second end of the source electrode of described NMOS tube Q10, the positive pole of described voltage stabilizing didoe and described resistance R15.
8. solar charging circuit according to claim 7, is characterized in that, described solar charging circuit also comprises bi-directional voltage stabilizing diode ZD3, wherein:
The positive pole of described solar panel connects the first end of described bi-directional voltage stabilizing diode ZD3, and the second end of described bi-directional voltage stabilizing diode connects the negative pole of described solar panel.
9. solar charging circuit according to claim 8, is characterized in that, described solar charging circuit also comprises fuse F1, wherein:
The positive pole of described solar panel connects the first end of described fuse F1, and second end of described fuse F1 connects the positive pole of described storage battery.
10. solar charging circuit according to claim 9, is characterized in that,
Described triode Q1 and described triode Q2 is PNP type triode, and described triode Q11 is NPN type triode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510483874.1A CN105071469B (en) | 2015-08-10 | 2015-08-10 | A kind of solar charging circuit |
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| CN201510483874.1A CN105071469B (en) | 2015-08-10 | 2015-08-10 | A kind of solar charging circuit |
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| CN105071469A true CN105071469A (en) | 2015-11-18 |
| CN105071469B CN105071469B (en) | 2018-03-13 |
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| CN201510483874.1A Expired - Fee Related CN105071469B (en) | 2015-08-10 | 2015-08-10 | A kind of solar charging circuit |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947258A (en) * | 2017-11-13 | 2018-04-20 | 江苏罗特能源科技有限公司 | A kind of protection circuit to controller for solar |
| CN108400792A (en) * | 2018-03-23 | 2018-08-14 | 辅易航智能科技(苏州)有限公司 | A kind of signal sending circuit |
| CN109391021A (en) * | 2018-11-27 | 2019-02-26 | 每天蓝(深圳)科技有限公司 | Cell anti-reverse fills the control device and solar energy MPPT control system of switch |
| CN112803522A (en) * | 2020-12-31 | 2021-05-14 | 深圳市乐迪电子有限公司 | Charging circuit, charging device, charging control method and charging control system |
| CN113067468A (en) * | 2021-04-15 | 2021-07-02 | 常州易控汽车电子股份有限公司 | Integrated reverse connection prevention and high-side switch circuit and controller |
| WO2022062532A1 (en) * | 2020-09-24 | 2022-03-31 | 苏州赛芯电子科技股份有限公司 | Battery protection circuit and lithium battery system |
| CN117154959A (en) * | 2023-02-14 | 2023-12-01 | 荣耀终端有限公司 | Charging system and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4634953A (en) * | 1984-04-27 | 1987-01-06 | Casio Computer Co., Ltd. | Electronic equipment with solar cell |
| CN202076807U (en) * | 2010-11-25 | 2011-12-14 | 江苏银佳企业集团有限公司 | Solar charging circuit |
-
2015
- 2015-08-10 CN CN201510483874.1A patent/CN105071469B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4634953A (en) * | 1984-04-27 | 1987-01-06 | Casio Computer Co., Ltd. | Electronic equipment with solar cell |
| CN202076807U (en) * | 2010-11-25 | 2011-12-14 | 江苏银佳企业集团有限公司 | Solar charging circuit |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947258A (en) * | 2017-11-13 | 2018-04-20 | 江苏罗特能源科技有限公司 | A kind of protection circuit to controller for solar |
| CN108400792A (en) * | 2018-03-23 | 2018-08-14 | 辅易航智能科技(苏州)有限公司 | A kind of signal sending circuit |
| CN108400792B (en) * | 2018-03-23 | 2020-09-08 | 辅易航智能科技(苏州)有限公司 | Signal transmitting circuit |
| CN109391021A (en) * | 2018-11-27 | 2019-02-26 | 每天蓝(深圳)科技有限公司 | Cell anti-reverse fills the control device and solar energy MPPT control system of switch |
| WO2022062532A1 (en) * | 2020-09-24 | 2022-03-31 | 苏州赛芯电子科技股份有限公司 | Battery protection circuit and lithium battery system |
| US11967843B2 (en) | 2020-09-24 | 2024-04-23 | Suzhou Xysemi Electronic Technology Co., Limited | Battery protection circuit and lithium battery system |
| CN112803522A (en) * | 2020-12-31 | 2021-05-14 | 深圳市乐迪电子有限公司 | Charging circuit, charging device, charging control method and charging control system |
| CN113067468A (en) * | 2021-04-15 | 2021-07-02 | 常州易控汽车电子股份有限公司 | Integrated reverse connection prevention and high-side switch circuit and controller |
| CN117154959A (en) * | 2023-02-14 | 2023-12-01 | 荣耀终端有限公司 | Charging system and method |
| CN117154959B (en) * | 2023-02-14 | 2024-09-17 | 荣耀终端有限公司 | Charging system and method |
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| Publication number | Publication date |
|---|---|
| CN105071469B (en) | 2018-03-13 |
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