CN217427704U - Photovoltaic power generation energy storage control circuit - Google Patents
Photovoltaic power generation energy storage control circuit Download PDFInfo
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- CN217427704U CN217427704U CN202220481889.XU CN202220481889U CN217427704U CN 217427704 U CN217427704 U CN 217427704U CN 202220481889 U CN202220481889 U CN 202220481889U CN 217427704 U CN217427704 U CN 217427704U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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Abstract
The utility model relates to a photovoltaic power generation energy storage control circuit, which comprises a constant current control circuit, a voltage limiting control circuit and a current limiting switch circuit; the current limiting switch circuit is connected in series between the electric energy output end of the external solar energy buck/boost circuit and the storage battery and is used for limiting the charging current of the storage battery; the constant current control circuit and the voltage limiting control circuit are both connected with the current limiting switch circuit and the storage battery; the current-limiting switch circuit is intelligently controlled by the constant-current control circuit according to the voltage of the storage battery to adjust the charging current of the storage battery; the voltage limiting control circuit controls the current limiting switch circuit to charge or stop charging the storage battery according to the voltage of the storage battery; the voltage reference circuit provides reference voltage for the constant current control circuit, the voltage limiting control circuit and the charging state display circuit; the charging state of the storage battery is also displayed through the charging state display circuit; therefore, the constant-current voltage-limiting charging of the storage battery is realized, the storage battery is protected, and the service life of the storage battery is prolonged.
Description
Technical Field
The utility model relates to an energy storage control technical field, more specifically say, relate to a photovoltaic power generation energy storage control circuit.
Background
Most of the existing photovoltaic charging circuits only carry out voltage boosting or voltage reduction to charge the storage battery, but most of the existing photovoltaic charging circuits do not carry out charging energy storage control, so that the existing photovoltaic charging circuits often have large damage to the storage battery, have overcharge and seriously affect the service life of the storage battery.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, it is simple to provide a circuit, and is with low costs, small photovoltaic power generation energy storage control circuit.
The utility model provides a technical scheme that its technical problem adopted is:
constructing a photovoltaic power generation energy storage control circuit, which comprises a constant current control circuit, a voltage limiting control circuit and a current limiting switch circuit; the current limiting switch circuit is connected in series between the electric energy output end of the external solar energy buck/boost circuit and the storage battery and is used for limiting the charging current of the storage battery;
the constant current control circuit intelligently controls the current limiting switch circuit to adjust the charging current of the storage battery according to the voltage of the storage battery;
the voltage limiting control circuit controls the current limiting switch circuit to charge or stop charging the storage battery according to the voltage of the storage battery;
the constant current control circuit and the voltage limiting control circuit are both connected with the current limiting switch circuit and the storage battery;
the charging state display circuit is used for displaying the charging state of the storage battery, and the voltage reference circuit is used for providing reference voltage for the constant current control circuit, the voltage limiting control circuit and the charging state display circuit;
the constant current control circuit, the voltage limiting control circuit and the charging state display circuit are connected with the voltage reference circuit; and the voltage reference circuit is connected with the electric energy output end of the external solar energy buck/boost circuit.
Photovoltaic power generation energy storage control circuit, voltage reference circuit include: a three-terminal voltage regulator tube and a first diode;
the positive electrode of the first diode is connected with the positive end of the electric energy output end of the external solar energy buck/boost circuit, the negative electrode of the first diode is connected with the VIN end of the three-terminal voltage stabilizer, and the VOUT end of the three-terminal voltage stabilizer is the output end of the voltage reference circuit;
the negative end of the electric energy output end of the external solar energy buck/boost circuit is grounded, and the GND end of the three-end voltage regulator tube is also grounded.
Photovoltaic power generation energy storage control circuit, current-limiting switch circuit include: the first triode, the second triode, the third triode, the second diode and the third diode;
the anode of the second diode is connected with the anode end of the electric energy output end of the external solar energy buck/boost circuit, the cathode of the second diode is connected with the emitter of the first triode, the collector of the first triode is connected with the collector of the second triode and also connected with the anode of the storage battery, and the cathode of the storage battery is grounded;
the emitter of the second triode is connected with the base of the first triode and is also connected with a first capacitor, the base of the second triode is connected with a first resistor, and the other ends of the first capacitor and the first resistor are both connected with the collector of the third triode;
the emitting electrode of the third triode is grounded, the base electrode of the third triode is connected with the negative electrode of the third diode and is also connected with a second resistor, the other end of the second resistor is grounded, the positive electrode of the third diode is the control end of the current-limiting switch circuit and is respectively connected with the constant current control circuit and the voltage-limiting control circuit and is also connected with a second capacitor, and the other end of the second capacitor is grounded.
Photovoltaic power generation energy storage control circuit, still include: a voltage dividing unit; the voltage division unit comprises a third resistor and a fourth resistor;
the positive electrode of the storage battery is connected with a fifth resistor, the other end of the fifth resistor is connected with the third resistor, the other end of the third resistor is connected with the fourth resistor, and the other end of the fourth resistor is grounded;
the other end of the third resistor is a voltage division output end of the voltage division unit and is respectively connected with the constant current control circuit and the voltage limiting control circuit.
Photovoltaic power generation energy storage control circuit, constant current control circuit include: the first operational amplifier, the second operational amplifier, the fourth triode, the sixth resistor and the adjustable resistor;
a pin 1 of the adjustable resistor is connected with the output end of the voltage reference circuit, and a pin 3 of the adjustable resistor is connected with the reverse input end of the first operational amplifier and is also connected with the charging state display circuit;
the homodromous input end of the first operational amplifier is connected with the voltage division output end of the voltage division unit, the output end of the first operational amplifier is connected with the base electrode of the fourth triode, and the output end of the voltage reference circuit is also connected with a seventh resistor, an eighth resistor and the sixth resistor; the other end of the seventh resistor is connected with a collector of the fourth triode, the other end of the eighth resistor is connected with a base of the fourth triode, and the other end of the sixth resistor is connected with the same-direction input end of the second operational amplifier; an emitter of the fourth triode is also connected with the same-direction input end of the second operational amplifier and is also connected with a ninth resistor, and the other end of the ninth resistor is grounded;
the reverse input end of the second operational amplifier is connected with a tenth resistor, an eleventh resistor and a third capacitor, the other end of the tenth resistor is connected with the negative electrode of the storage battery and is also connected with a twelfth resistor, and the other end of the twelfth resistor is grounded; the other ends of the eleventh resistor and the third capacitor are both connected with the output end of the second operational amplifier, and the output end of the second operational amplifier is also connected with the control end of the current-limiting switch circuit.
Photovoltaic power generation energy storage control circuit, current-limiting switch circuit's control end still is connected with the thirteenth resistance, the other end of thirteenth resistance with the negative pole of second diode is connected.
Photovoltaic power generation energy storage control circuit, voltage limiting control circuit include: a third operational amplifier;
the inverting input end of the third operational amplifier is connected with a fourteenth resistor and a fifteenth resistor, the other end of the fourteenth resistor is connected with the voltage division output end of the voltage division unit, and the other end of the fifteenth resistor is connected with the output end of the third operational amplifier;
and the equidirectional input end of the third operational amplifier is also connected with a sixteenth resistor, and the other end of the sixteenth resistor is connected with the 2 pins of the adjustable resistor.
Photovoltaic power generation energy storage control circuit, the charged state display circuit include: the fourth operational amplifier, the first light-emitting diode, the seventeenth resistor and the eighteenth resistor;
the seventeenth resistor and the eighteenth resistor are both connected with the equidirectional input end of the fourth operational amplifier, the other end of the seventeenth resistor is connected with the 3 pin of the adjustable resistor, and the other end of the eighteenth resistor is grounded; the inverting input end of the fourth operational amplifier is also grounded;
the anode of the first light emitting diode is connected with the output end of the voltage reference circuit, the cathode of the first light emitting diode is connected with a nineteenth resistor, and the other end of the nineteenth resistor is connected with the output end of the fourth operational amplifier.
Photovoltaic power generation energy storage control circuit, the charged state display circuit still includes: a second light emitting diode and a twentieth resistor;
the anode of the second light emitting diode is connected with the cathode of the second diode, the cathode of the second light emitting diode is connected with the twentieth resistor, and the other port end of the twentieth resistor is grounded.
The beneficial effects of the utility model reside in that: the current-limiting switch circuit is intelligently controlled by the constant-current control circuit according to the voltage of the storage battery to adjust the charging current of the storage battery; the voltage limiting control circuit controls the current limiting switch circuit to charge or stop charging the storage battery according to the voltage of the storage battery; the voltage reference circuit provides reference voltage for the constant current control circuit, the voltage limiting control circuit and the charging state display circuit; the charging state of the storage battery is also displayed through the charging state display circuit; therefore, the constant-current voltage-limiting charging of the storage battery is realized, the storage battery is protected, and the service life of the storage battery is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work according to the drawings:
fig. 1 is a schematic circuit diagram of a photovoltaic power generation energy storage control circuit according to a preferred embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following description will be made clearly and completely in conjunction with the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The photovoltaic power generation energy storage control circuit of the preferred embodiment of the utility model is shown in figure 1; the circuit comprises a constant current control circuit 100, a voltage limiting control circuit 200 and a current limiting switch circuit 300; the current-limiting switch circuit 300 is connected in series between the power output end of the external solar energy buck/boost circuit and a storage battery (not shown in the figure) for limiting the charging current of the storage battery;
the constant current control circuit 100 intelligently controls the current-limiting switch circuit 300 to adjust the charging current of the storage battery according to the voltage of the storage battery;
the voltage limiting control circuit 200 controls the current limiting switch circuit 300 to charge or stop charging the storage battery according to the voltage of the storage battery;
the constant current control circuit 100 and the voltage limiting control circuit 200 are both connected with the current limiting switch circuit 300 and the storage battery;
the charging state display circuit 400 is used for displaying the charging state of the storage battery, and the voltage reference circuit 500 is used for providing reference voltage for the constant current control circuit 100, the voltage limiting control circuit 200 and the charging state display circuit 400;
the constant current control circuit 100, the voltage limiting control circuit 200 and the charging state display circuit 400 are connected with the voltage reference circuit 500; the voltage reference circuit 500 is connected with the electric energy output end of an external solar energy buck/boost circuit;
the constant current control circuit 100 intelligently controls the current-limiting switch circuit 300 to adjust the charging current of the storage battery according to the voltage of the storage battery; the voltage limiting control circuit 200 controls the current limiting switch circuit 300 to charge or stop charging the storage battery according to the voltage of the storage battery; the voltage reference circuit 500 provides reference voltages for the constant current control circuit 100, the voltage limiting control circuit 200 and the charging state display circuit 400; and also displays the state of charge of the storage battery through the charge state display circuit 400; therefore, the constant-current voltage-limiting charging of the storage battery is realized, the storage battery is protected, and the service life of the storage battery is prolonged.
As shown in fig. 1, the voltage reference circuit 500 includes: a three-terminal regulator tube U1 and a first diode D3;
the positive electrode of the first diode D3 is connected with the positive electrode end of the electric energy output end of an external solar energy buck/boost circuit, the negative electrode of the first diode D3 is connected with the VIN end of a three-terminal voltage regulator, and the VOUT end of a three-terminal voltage regulator tube U1 is the output end of the voltage reference circuit 500;
the negative end of the electric energy output end of the external solar energy buck/boost circuit is grounded, and the GND end of the three-terminal voltage regulator tube U1 is also grounded; the circuit is simple, the cost is low, and the volume is small.
As shown in fig. 1, the current limit switching circuit 300 includes: a first triode T1, a second triode T2, a third triode T3, a second diode D1 and a third diode D5;
the positive electrode of the second diode D1 is connected with the positive electrode end of the electric energy output end of the external solar energy buck/boost circuit (or directly connected with the positive electrode output end of the solar energy generation panel, wherein the generation voltage of the solar energy panel needs to be matched with the voltage of the storage battery, the negative electrode output end of the solar energy generation panel is grounded), the negative electrode of the second diode D1 is connected with the emitter of the first triode T1, the collector of the first triode T1 is connected with the collector of the second triode T2 and is also connected with the positive electrode of the storage battery, and the negative electrode of the storage battery is grounded; the negative electrode of the electric energy output end of the external solar energy buck/boost circuit is grounded;
an emitter of the second triode T2 is connected with a base of the first triode T1 and is also connected with a first capacitor C6, a base of the second triode T2 is connected with a first resistor R1, and the other ends of the first capacitor C6 and the first resistor R1 are connected with a collector of the third triode T3;
an emitter of the third triode T3 is grounded, a base of the third triode T3 is connected with a cathode of the third diode D5 and is further connected with a second resistor R11, the other end of the second resistor R11 is grounded, an anode of the third diode D5 is a control end of the current-limiting switching circuit 300 and is respectively connected with the constant-current control circuit 100 and the voltage-limiting control circuit 200, and is further connected with a second capacitor C5, and the other end of the second capacitor C5 is grounded; the circuit is simple, the cost is low, and the volume is small.
As shown in fig. 1, further includes: a voltage dividing unit 600; the voltage dividing unit 600 includes a third resistor R3 and a fourth resistor R4;
the positive electrode of the storage battery is connected with a fifth resistor R2, the other end of the fifth resistor R2 is connected with a third resistor R3, the other end of the third resistor R3 is connected with a fourth resistor R4, and the other end of the fourth resistor R4 is grounded;
the other end of the third resistor R3 is a voltage division output end of the voltage division unit 600 and is respectively connected with the constant current control circuit 100 and the voltage limiting control circuit 200; the circuit is simple, the cost is low, and the volume is small.
As shown in fig. 1, the constant current control circuit 100 includes: the operational amplifier circuit comprises a first operational amplifier U1C, a second operational amplifier U1D, a fourth triode T4, a sixth resistor R17 and an adjustable resistor RV 1;
a pin 1 of the adjustable resistor RV1 is connected with the output end of the voltage reference circuit 500, and a pin 3 is connected with the reverse input end of the first operational amplifier U1C and is also connected with the charging state display circuit 400;
the same-direction input end of the first operational amplifier U1C is connected with the voltage division output end of the voltage division unit 600, and the output end is connected with the base of the fourth triode T4, and the output end of the voltage reference circuit 500 is further connected with a seventh resistor R18, an eighth resistor R19 and a sixth resistor R17; the other end of the seventh resistor R18 is connected with the collector of the fourth triode T4, the other end of the eighth resistor R19 is connected with the base of the fourth triode T4, and the other end of the sixth resistor R17 is connected with the homodromous input end of the second operational amplifier U1D; an emitter of the fourth triode T4 is also connected with the unidirectional input end of the second operational amplifier U1D and is also connected with a ninth resistor R16, and the other end of the ninth resistor R16 is grounded;
the reverse input end of the second operational amplifier U1D is connected with a tenth resistor R15, an eleventh resistor R14 and a third capacitor C4, the other end of the tenth resistor R15 is connected with the negative electrode of the storage battery and is also connected with a twelfth resistor R12, and the other end of the twelfth resistor R12 is grounded; the other ends of the eleventh resistor R14 and the third capacitor C4 are both connected to the output end of the second operational amplifier U1D, and the output end of the second operational amplifier U1D is also connected to the control end of the current-limiting switch circuit 300;
when the voltage of the storage battery is lower than 9V, the photovoltaic power generation energy storage control circuit works in a low-current maintenance charging state, the working principle is that the potential of the equidirectional input end of the first operational amplifier U1C is lower than that of the reverse input end, the output end outputs a low potential, the fourth triode T4 is cut off, the potential of the equidirectional input end of the second operational amplifier U1D is about 0.18V, and at the moment, the current limiting switch circuit 300 is controlled (controlled by the constant current control circuit 100) to control the charging current of the storage battery to be about 250 mA;
with the continuous maintenance and charging, the voltage of the storage battery gradually rises, when the voltage of the storage battery exceeds 9V, the photovoltaic power generation energy storage control circuit switches to a large-current fast charging mode, at this time, the potential of the equidirectional input end of the first operational amplifier U1C is higher than the potential of the reverse input end, the output end outputs a high potential, the fourth triode T4 is turned on, the potential of the equidirectional input end of the second operational amplifier U1D is about 0.48V, and at this time, the current limiting switch circuit 300 is controlled (controlled by the constant current control circuit 100) to constantly charge the storage battery by about 1A.
As shown in fig. 1, the control end of the current-limiting switch circuit 300 is further connected to a thirteenth resistor R10, and the other end of the thirteenth resistor R10 is connected to the negative electrode of the second diode D1; after the storage battery is fully charged, the charging current of the current-limiting switch circuit 300 to the storage battery is controlled to be only 10-30 mA so as to supplement the electric quantity lost by self-discharge of the battery.
As shown in fig. 1, the voltage limiting control circuit 200 includes: a third operational amplifier U1B;
an inverting input end of the third operational amplifier U1B is connected with a fourteenth resistor R7 and a fifteenth resistor R9, the other end of the fourteenth resistor R7 is connected with a voltage division output end of the voltage division unit 600, and the other end of the fifteenth resistor R9 is connected with an output end of the third operational amplifier U1B;
the equidirectional input end of the third operational amplifier U1B is also connected with a sixteenth resistor R8, and the other end of the sixteenth resistor R8 is connected with a pin 2 of an adjustable resistor RV 1; the adjustable resistor RV1 is used for adjusting the voltage-limiting charging voltage/floating charging voltage;
when the electric quantity of the storage battery is close to full charge, the photovoltaic power generation energy storage control circuit automatically shifts to a voltage-limiting floating charge state (the voltage-limiting floating charge voltage is set to be 13.8V), the charging current at the moment gradually drops from the rapid charging state, and the current-limiting switch circuit 300 is controlled (controlled by the voltage-limiting control circuit 200) to cut off the charging of the storage battery after the storage battery is fully charged.
As shown in fig. 1, the charge state display circuit 400 includes: a fourth operational amplifier U1A, a first light emitting diode D7, a seventeenth resistor R5, and an eighteenth resistor R6;
the seventeenth resistor R5 and the eighteenth resistor R6 are both connected with the equidirectional input end of the fourth operational amplifier U1A, the other end of the seventeenth resistor R5 is connected with a pin 3 of the adjustable resistor RV1, and the other end of the eighteenth resistor R6 is grounded; the inverting input of the fourth operational amplifier U1A is also connected to ground;
the anode of the first light-emitting diode D7 is connected to the output terminal of the voltage reference circuit 500, the cathode of the first light-emitting diode D7 is connected to the nineteenth resistor R13, and the other end of the nineteenth resistor R13 is connected to the output terminal of the fourth operational amplifier U1A; during charging, the first light emitting diode D7 lights up, enters a floating state, and then goes out, indicating that charging is complete.
As shown in fig. 1, the charging state display circuit 400 further includes: a second light emitting diode (not shown) and a twentieth resistor (not shown);
the anode of the second light-emitting diode is connected with the cathode of the second diode D1, the cathode of the second light-emitting diode is connected with a twentieth resistor, and the other port end of the twentieth resistor is grounded; the device is used for displaying the electric energy input state of the upper circuit to the photovoltaic power generation energy storage control circuit.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.
Claims (9)
1. A photovoltaic power generation energy storage control circuit comprises a constant current control circuit, a voltage limiting control circuit and a current limiting switch circuit; the solar energy charging circuit is characterized in that the current limiting switch circuit is connected in series between an electric energy output end of an external solar energy down/up-conversion circuit and a storage battery and is used for limiting charging current of the storage battery;
the constant current control circuit intelligently controls the current limiting switch circuit to adjust the charging current of the storage battery according to the voltage of the storage battery;
the voltage limiting control circuit controls the current limiting switch circuit to charge or stop charging the storage battery according to the voltage of the storage battery;
the constant current control circuit and the voltage limiting control circuit are both connected with the current limiting switch circuit and the storage battery;
the charging state display circuit is used for displaying the charging state of the storage battery, and the voltage reference circuit is used for providing reference voltage for the constant current control circuit, the voltage limiting control circuit and the charging state display circuit;
the constant current control circuit, the voltage limiting control circuit and the charging state display circuit are connected with the voltage reference circuit; and the voltage reference circuit is connected with the electric energy output end of the external solar energy buck/boost circuit.
2. The photovoltaic power generation energy storage control circuit of claim 1, wherein the voltage reference circuit comprises: a three-terminal voltage regulator tube and a first diode;
the positive electrode of the first diode is connected with the positive end of the electric energy output end of the external solar energy buck/boost circuit, the negative electrode of the first diode is connected with the VIN end of the three-terminal voltage stabilizer, and the VOUT end of the three-terminal voltage stabilizer is the output end of the voltage reference circuit;
the negative end of the electric energy output end of the external solar energy buck/boost circuit is grounded, and the GND end of the three-end voltage regulator tube is also grounded.
3. The photovoltaic power generation energy storage control circuit of claim 2, wherein the current limiting switch circuit comprises: the first triode, the second triode, the third triode, the second diode and the third diode;
the anode of the second diode is connected with the anode end of the electric energy output end of the external solar energy buck/boost circuit, the cathode of the second diode is connected with the emitter of the first triode, the collector of the first triode is connected with the collector of the second triode and also connected with the anode of the storage battery, and the cathode of the storage battery is grounded;
the emitter of the second triode is connected with the base of the first triode and is also connected with a first capacitor, the base of the second triode is connected with a first resistor, and the other ends of the first capacitor and the first resistor are both connected with the collector of the third triode;
the emitting electrode of the third triode is grounded, the base electrode of the third triode is connected with the negative electrode of the third diode and is also connected with a second resistor, the other end of the second resistor is grounded, the positive electrode of the third diode is the control end of the current-limiting switch circuit and is respectively connected with the constant-current control circuit and the voltage-limiting control circuit and is also connected with a second capacitor, and the other end of the second capacitor is grounded.
4. The photovoltaic power generation energy storage control circuit of claim 3, further comprising: a voltage dividing unit; the voltage division unit comprises a third resistor and a fourth resistor;
the positive electrode of the storage battery is connected with a fifth resistor, the other end of the fifth resistor is connected with the third resistor, the other end of the third resistor is connected with the fourth resistor, and the other end of the fourth resistor is grounded;
the other end of the third resistor is a voltage division output end of the voltage division unit and is respectively connected with the constant current control circuit and the voltage limiting control circuit.
5. The photovoltaic power generation energy storage control circuit according to claim 4, wherein the constant current control circuit comprises: the first operational amplifier, the second operational amplifier, the fourth triode, the sixth resistor and the adjustable resistor;
a pin 1 of the adjustable resistor is connected with the output end of the voltage reference circuit, and a pin 3 of the adjustable resistor is connected with the reverse input end of the first operational amplifier and is also connected with the charging state display circuit;
the homodromous input end of the first operational amplifier is connected with the voltage division output end of the voltage division unit, the output end of the first operational amplifier is connected with the base electrode of the fourth triode, and the output end of the voltage reference circuit is also connected with a seventh resistor, an eighth resistor and the sixth resistor; the other end of the seventh resistor is connected with a collector of the fourth triode, the other end of the eighth resistor is connected with a base of the fourth triode, and the other end of the sixth resistor is connected with the same-direction input end of the second operational amplifier; an emitter of the fourth triode is also connected with the same-direction input end of the second operational amplifier and is also connected with a ninth resistor, and the other end of the ninth resistor is grounded;
the reverse input end of the second operational amplifier is connected with a tenth resistor, an eleventh resistor and a third capacitor, the other end of the tenth resistor is connected with the negative electrode of the storage battery and is also connected with a twelfth resistor, and the other end of the twelfth resistor is grounded; the other ends of the eleventh resistor and the third capacitor are both connected with the output end of the second operational amplifier, and the output end of the second operational amplifier is also connected with the control end of the current-limiting switch circuit.
6. The photovoltaic power generation energy storage control circuit according to claim 5, wherein a thirteenth resistor is further connected to the control end of the current-limiting switch circuit, and the other end of the thirteenth resistor is connected to the cathode of the second diode.
7. The photovoltaic power generation energy storage control circuit of claim 5, wherein the voltage limiting control circuit comprises: a third operational amplifier;
the inverting input end of the third operational amplifier is connected with a fourteenth resistor and a fifteenth resistor, the other end of the fourteenth resistor is connected with the voltage division output end of the voltage division unit, and the other end of the fifteenth resistor is connected with the output end of the third operational amplifier;
and the equidirectional input end of the third operational amplifier is also connected with a sixteenth resistor, and the other end of the sixteenth resistor is connected with the 2 pins of the adjustable resistor.
8. The photovoltaic power generation and energy storage control circuit of claim 5, wherein the charging state display circuit comprises: the fourth operational amplifier, the first light emitting diode, the seventeenth resistor and the eighteenth resistor;
the seventeenth resistor and the eighteenth resistor are both connected with the equidirectional input end of the fourth operational amplifier, the other end of the seventeenth resistor is connected with the 3 pin of the adjustable resistor, and the other end of the eighteenth resistor is grounded; the inverting input end of the fourth operational amplifier is also grounded;
the anode of the first light emitting diode is connected with the output end of the voltage reference circuit, the cathode of the first light emitting diode is connected with a nineteenth resistor, and the other end of the nineteenth resistor is connected with the output end of the fourth operational amplifier.
9. The photovoltaic power generation energy storage control circuit of claim 3, wherein the charging state display circuit further comprises: a second light emitting diode and a twentieth resistor;
the anode of the second light emitting diode is connected with the cathode of the second diode, the cathode of the second light emitting diode is connected with the twentieth resistor, and the other port end of the twentieth resistor is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220481889.XU CN217427704U (en) | 2022-03-07 | 2022-03-07 | Photovoltaic power generation energy storage control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220481889.XU CN217427704U (en) | 2022-03-07 | 2022-03-07 | Photovoltaic power generation energy storage control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN217427704U true CN217427704U (en) | 2022-09-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220481889.XU Active CN217427704U (en) | 2022-03-07 | 2022-03-07 | Photovoltaic power generation energy storage control circuit |
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| Country | Link |
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| CN (1) | CN217427704U (en) |
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- 2022-03-07 CN CN202220481889.XU patent/CN217427704U/en active Active
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