CN219304486U - Novel solar energy controller - Google Patents
Novel solar energy controller Download PDFInfo
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- CN219304486U CN219304486U CN202222387026.9U CN202222387026U CN219304486U CN 219304486 U CN219304486 U CN 219304486U CN 202222387026 U CN202222387026 U CN 202222387026U CN 219304486 U CN219304486 U CN 219304486U
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model belongs to the technical field of solar power generation control equipment, in particular to a novel solar controller, which comprises a photovoltaic panel terminal, a battery terminal, a photovoltaic panel voltage acquisition circuit, a battery voltage acquisition circuit and a first comparator, wherein a first voltage dividing resistor is arranged at the output end of the photovoltaic panel voltage acquisition circuit, and a first switch is connected in parallel with the first voltage dividing resistor; the battery voltage acquisition circuit comprises a second voltage dividing resistor which is connected with a second switch in parallel; the novel solar controller has the advantages that the voltage collecting circuit is further provided with the adjustable divider resistor, so that the voltage signal collected by the photovoltaic panel voltage collecting circuit and the battery voltage collecting circuit can be adjusted within a certain range, the charging voltage can be adjusted within a certain range, the novel solar controller has a very wide voltage charging range, batteries with different capacities can be adapted, and the novel solar controller is very convenient and beneficial to photovoltaic panel construction networking.
Description
Technical Field
The utility model belongs to the technical field of solar power generation control equipment, and particularly relates to a novel solar controller.
Background
The solar energy controller is control equipment used in a solar power generation system, is a core control part of the whole photovoltaic power supply system, and has the following functions: the photovoltaic panel is used for controlling the photovoltaic panel to charge the storage battery; and secondly, controlling the discharge of the storage battery to supply power to the load. Some solar controllers also have the function of performing overcharge protection and overdischarge protection on the storage battery, and can display parameters such as the voltage of the storage battery, the load voltage, the solar photovoltaic panel matrix voltage, the charging current, the load current and the like.
For example, in the prior art, chinese patent document with publication number CN204167863U describes a solar controller with load overcurrent protection, which includes a solar cell, a controller and a storage battery, wherein the storage battery supplies power to a load, the solar cell is connected with an input end of the controller through a first a/D sampling unit, and an output end of the controller is connected with the solar cell; the load is connected with the input end of the controller through the load overcurrent protection unit, the output end of the controller is connected with the storage battery through the charge-discharge control unit, the storage battery is connected with the input end of the controller through the second A/D sampling unit, and if the load is overcurrent, the load is cut off through the controller, so that the protection purpose is achieved. The Chinese patent document with the publication number of CN207382040U describes an integrated solar controller, which comprises a main control module, an overvoltage detection module and a lithium battery protection module, wherein the main control module controls the lithium battery protection module to detect single-section voltage of a lithium battery pack, and if the single-section voltage exceeds the protection voltage, the lithium battery protection module controls the lithium battery pack to stop working; the main control module also controls the overvoltage detection module to continuously detect the working state of the lithium battery protection module, and if the overvoltage detection module detects that the lithium battery protection module controls the lithium battery pack to stop working, the lithium battery and the solar controller are protected.
The existing solar controller can only be used for one type of photovoltaic panel and battery, and for batteries with different capacities and photovoltaic panels with different power generation powers, the corresponding controller needs to be replaced; in addition, the existing solar controller cannot change the charging control strategy, and is unfavorable for correcting the charging process of the photovoltaic panel according to actual conditions.
Disclosure of Invention
The utility model aims to provide a novel solar controller and solve the technical problem that the solar controller in the prior art is poor in universality.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the novel solar controller comprises a photovoltaic panel terminal, a battery terminal, a photovoltaic panel voltage acquisition circuit, a battery voltage acquisition circuit and a first comparator, wherein the input end of the photovoltaic panel voltage acquisition circuit is electrically connected to the photovoltaic panel terminal, and the output end of the photovoltaic panel voltage acquisition circuit is electrically connected to the non-inverting input end of the first comparator; the input end of the battery voltage acquisition circuit is electrically connected to the battery terminal, and the output end of the battery voltage acquisition circuit is electrically connected to the inverting input end of the first comparator; a first control switch is arranged between the photovoltaic panel terminal and the battery terminal, the output end of the first comparator is electrically connected to the control end of the first control switch, a first voltage dividing resistor is arranged at the output end of the photovoltaic panel voltage acquisition circuit, and the first voltage dividing resistor is connected with a first switch in parallel; the battery voltage acquisition circuit comprises a second voltage dividing resistor which is connected with a second switch in parallel; and an adjustable voltage dividing resistor is further arranged on the battery voltage acquisition circuit.
Preferably, the photovoltaic panel voltage acquisition circuit comprises a second control switch and a voltage acquisition chip, and the voltage acquisition chip is electrically connected to the photovoltaic panel terminal through the second control switch.
Preferably, the battery voltage acquisition circuit further comprises a third voltage dividing resistor, and the second switch is connected in series with the third voltage dividing resistor and then connected in parallel with the second voltage dividing resistor.
Preferably, the circuit further comprises a third control switch, wherein the control end of the first control switch is electrically connected to the main circuit of the third control switch, and the output end of the first comparator is electrically connected to the control end of the third control switch.
Preferably, the third control switch is an NPN triode; the first control switch is a field effect transistor.
Preferably, the battery voltage acquisition circuit further comprises a second comparator and an indicator lamp group, wherein the output end of the first comparator is electrically connected to the inverting input end of the second comparator, and the output end of the battery voltage acquisition circuit is electrically connected to the non-inverting input end of the second comparator; the indicating lamp group comprises a first light emitting diode and a second light emitting diode which are connected in parallel and are opposite in energizing direction, one end of the indicating lamp group is electrically connected to the output end of the first comparator, and the other end of the indicating lamp group is electrically connected to the output end of the second comparator.
Preferably, the first light emitting diode is a green light bulb, and the second light emitting diode is a red light bulb.
Preferably, the battery voltage acquisition circuit further comprises a battery temperature sensor, wherein the battery temperature sensor is electrically connected to an output end of the battery voltage acquisition circuit.
Compared with the prior art, the utility model has the beneficial effects that:
1. the novel solar controller comprises a photovoltaic panel voltage acquisition circuit, a battery voltage acquisition circuit and a first comparator, wherein a first voltage dividing resistor is arranged at the output end of the photovoltaic panel voltage acquisition circuit, and a first switch is connected in parallel with the first voltage dividing resistor; the battery voltage acquisition circuit comprises a second voltage dividing resistor which is connected with a second switch in parallel; the novel solar controller has the advantages that the voltage collecting circuit is further provided with the adjustable voltage dividing resistor, so that the voltage signal collected by the photovoltaic panel voltage collecting circuit and the battery voltage collecting circuit can be adjusted within a certain range, the charging voltage can be adjusted within a certain range, the novel solar controller has a very wide voltage charging range, the novel solar controller has good universality, the novel solar controller can adapt to batteries with different capacities, and the novel solar controller is very convenient and beneficial to photovoltaic panel construction networking.
2. The novel solar controller is adopted to adjust the charging strategy according to the charging condition when the battery is charged, and the controller can adjust the charging voltage, so that the battery can be charged in a floating mode, namely, low-voltage charging is adopted when the battery voltage is lower, high-voltage charging is adopted when the battery voltage is higher, the charging effect is improved, and the service life of the battery is prolonged.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
fig. 1 is a schematic diagram of a novel solar controller according to an embodiment of the present utility model in a photovoltaic power generation system.
Fig. 2 is a schematic circuit diagram of an embodiment of the novel solar controller of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 and 2, a novel solar controller is shown.
As shown in fig. 1, the novel solar controller SCC2 includes a photovoltaic panel terminal for electrically connecting to a photovoltaic panel to receive electric energy generated by the photovoltaic panel, and a battery terminal for electrically connecting to a battery for charging the battery with the electric energy generated by the photovoltaic panel, the battery being electrically connected to a load through a fuse and a switch.
As shown in fig. 2, the novel solar controller further comprises a photovoltaic panel voltage acquisition circuit, a battery voltage acquisition circuit and a first comparator IC1a, wherein a first control switch Q3 and a zener diode D1 are arranged between the photovoltaic panel terminal and the battery terminal, and specifically, the photovoltaic panel terminal and the battery terminal comprise positive and negative terminals, wherein the negative terminal in the photovoltaic panel terminal is electrically connected with the negative terminal in the battery terminal, and the positive terminal in the photovoltaic panel terminal is electrically connected to the positive terminal of the battery terminal through the first control switch Q3.
The photovoltaic panel voltage acquisition circuit and the battery voltage acquisition circuit are used for respectively converting the positive voltage of the photovoltaic panel terminal and the positive voltage of the battery terminal according to a certain proportion, so that the voltage of the output end of the photovoltaic panel voltage acquisition circuit can reflect the positive voltage of the photovoltaic panel terminal, and the voltage of the output end of the battery voltage acquisition circuit can reflect the positive voltage of the battery terminal and has comparability.
The input end of the photovoltaic panel voltage acquisition circuit is electrically connected to the positive electrode of the photovoltaic panel terminal, the output end of the photovoltaic panel voltage acquisition circuit is electrically connected to the non-inverting input end of the first comparator IC1a, the input end of the battery voltage acquisition circuit is electrically connected to the positive electrode of the battery terminal, the output end of the battery voltage acquisition circuit is electrically connected to the inverting input end of the first comparator IC1a, the output end of the first comparator IC1a is electrically connected to the control end of the first control switch Q3, and a positive feedback resistor R7 and a differential feedback capacitor C6 are arranged between the output end and the non-inverting input end of the first comparator IC1a, so that a positive feedback effect is achieved, and the working stability of the first comparator IC1a is improved.
The first comparator IC1a compares the voltage collected from the positive electrode of the photovoltaic panel terminal with the voltage collected from the positive electrode of the battery terminal, when the positive electrode voltage of the photovoltaic panel terminal is larger than the positive electrode voltage of the battery terminal, the output end of the first comparator IC1a is at a high potential, the first control switch Q3 is electrified to charge the battery, when the positive electrode voltage of the photovoltaic panel terminal is smaller than the positive electrode voltage of the battery terminal, the output end of the first comparator IC1a is at a low potential, the first control switch Q3 is not electrified, and the battery power loss is prevented.
As shown in fig. 2, the photovoltaic panel voltage acquisition circuit comprises a second control switch Q2 and a voltage acquisition chip IC2, wherein the voltage acquisition chip IC2 is electrically connected to the positive electrode of the photovoltaic panel terminal through the second control switch Q2, the second control switch Q2 is a PNP triode, and the base electrode of the second control switch Q2 is grounded through a TVS diode D2 and a current limiting resistor R2; the voltage acquisition chip IC2 is a voltage reduction chip, a first voltage dividing resistor R8 is arranged at the output end of the photovoltaic panel voltage acquisition circuit, the first voltage dividing resistor R8 is connected with a first switch S1a in parallel, and when the first switch S1a is closed, the first voltage dividing resistor R8 is short-circuited, so that the proportion of a voltage signal acquired by the output end of the photovoltaic panel voltage acquisition circuit to the actual voltage of the photovoltaic panel is adjusted.
As shown in fig. 2, the battery voltage acquisition circuit includes a voltage dividing resistor R9 and a filter capacitor C7, and further includes a second voltage dividing resistor R12, where the second voltage dividing resistor R12 is connected in parallel with a second switch S1b and a third voltage dividing resistor R1, that is, the second switch S1b is connected in series with the third voltage dividing resistor R1 and then connected in parallel with the second voltage dividing resistor R12, and an adjustable voltage dividing resistor VR1 is further provided on the battery voltage acquisition circuit. When the second switch S1b is closed, the second voltage dividing resistor R12 and the third voltage dividing resistor R1 are in a parallel state, and the proportion of the voltage signal acquired by the output end of the battery voltage acquisition circuit and the actual voltage of the battery can be adjusted; by adjusting the resistance of the adjustable voltage dividing resistor VR1, the ratio of the voltage signal acquired by the output end of the battery voltage acquisition circuit to the actual voltage of the battery can be linearly adjusted within a certain range.
Since both the voltage signal of the photovoltaic panel collected by the photovoltaic panel voltage collection circuit and the voltage signal of the battery terminal collected by the battery voltage collection circuit can be changed, the signal magnitudes of the non-inverting input terminal and the inverting input terminal of the first comparator IC1a can be changed, so that the charging strategy can be changed, that is, when the voltage of the photovoltaic panel is higher than the voltage of the battery by a certain amount, the first control switch is turned on to charge the battery.
As shown in fig. 2, the novel solar controller further comprises a third control switch Q1, the first control switch is a field effect transistor, the third control switch is an NPN triode, the power of the first control switch is larger, and the on-off of the field effect transistor is difficult to be directly controlled by the first comparator, so that the third control switch is added to control the high-power field effect transistor through the low-power NPN triode.
The collector of the third control switch Q1 is electrically connected to the positive electrode of the photovoltaic panel terminal through a resistor R4 to provide working voltage for the third control switch Q1, the base of the third control switch Q1 is electrically connected to the output end of the first comparator IC1a through a resistor R5, the control end of the first control switch Q3 is electrically connected to the main circuit of the third control switch Q1, when the voltage of the same direction output end of the first comparator IC1a is larger than the voltage of the opposite direction output end, namely the voltage of the photovoltaic panel is higher than the voltage of the battery to a certain extent, the output end of the first comparator IC1a is in a high level, the third control switch Q1 is conducted, and therefore the first control switch Q3 is conducted to charge the battery; in contrast, if the output terminal of the first comparator IC1a is at a low level, the third control switch Q1 cannot be turned on, so that the third control switch Q1 is in an off state, and the battery and the photovoltaic panel are disconnected.
As shown in fig. 2, the novel solar controller further comprises a second comparator IC1b and an indicator lamp group LED1, wherein the indicator lamp group LED1 comprises a first light emitting diode G and a second light emitting diode R which are connected in parallel and have opposite power-on directions, the first light emitting diode G is a green lamp bead, and the second light emitting diode R is a red lamp bead.
The output end of the first comparator IC1a is electrically connected to the inverting input end of the second comparator IC1b, the output end of the battery voltage acquisition circuit is electrically connected to the non-inverting input end of the second comparator IC1b, one end of the indicating lamp group LED1 is electrically connected to the output end of the first comparator IC1a through a resistor R6, and the other end is electrically connected to the output end of the second comparator IC1 b. When the battery is charged, the output end of the first comparator IC1a is at a high level, the voltage of the non-inverting input end of the second comparator IC1b is lower than the voltage of the inverting input end, the output end of the second comparator IC1b is at a low level, and the second light emitting diode R is lightened; when the battery is full, the output terminal of the first comparator IC1a is at a low level, the voltage at the non-inverting input terminal of the second comparator IC1b is higher than the voltage at the inverting input terminal, the output terminal of the second comparator IC1b is at a high level, and the first light emitting diode G is turned on. And when the magnitudes of signals collected by the photovoltaic panel voltage collecting circuit and the battery voltage collecting circuit are adjusted, namely, the floating charge voltage of the photovoltaic panel to the battery is adjusted, the first light emitting diode G and the second light emitting diode R are alternately lightened.
As shown in fig. 2, the novel solar controller further comprises a battery temperature sensor TM1, the battery temperature sensor TM1 is electrically connected to the output end of the battery voltage acquisition circuit through a resistor R10, the battery temperature sensor TM1 is used for acquiring temperature information of a battery, and the battery temperature sensor TM1 is connected with a filter capacitor C8 in parallel.
As shown in fig. 2, the photovoltaic panel terminal is also electrically connected with a gas discharge tube TZ1 and a filter capacitor C9, so as to play roles in lightning protection and filter protection; the input end and the output end of the voltage acquisition chip IC2 are respectively connected with a filter capacitor C3 and a filter capacitor C4, so that the filter protection function is realized; the battery terminal is electrically connected with a filter capacitor C1 and a filter capacitor C2 which play a role in protection.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The novel solar controller comprises a photovoltaic panel terminal, a battery terminal, a photovoltaic panel voltage acquisition circuit, a battery voltage acquisition circuit and a first comparator, wherein the input end of the photovoltaic panel voltage acquisition circuit is electrically connected to the photovoltaic panel terminal, and the output end of the photovoltaic panel voltage acquisition circuit is electrically connected to the non-inverting input end of the first comparator; the input end of the battery voltage acquisition circuit is electrically connected to the battery terminal, and the output end of the battery voltage acquisition circuit is electrically connected to the inverting input end of the first comparator; be provided with a control switch between photovoltaic board terminal and the battery terminal, the output electricity of first comparator is connected to a control end of control switch, its characterized in that: the output end of the photovoltaic panel voltage acquisition circuit is provided with a first voltage dividing resistor which is connected with a first switch in parallel; the battery voltage acquisition circuit comprises a second voltage dividing resistor which is connected with a second switch in parallel; and an adjustable voltage dividing resistor is further arranged on the battery voltage acquisition circuit.
2. The novel solar controller of claim 1, wherein: the photovoltaic panel voltage acquisition circuit comprises a second control switch and a voltage acquisition chip, and the voltage acquisition chip is electrically connected to the photovoltaic panel terminal through the second control switch.
3. The novel solar controller of claim 1, wherein: the battery voltage acquisition circuit further comprises a third voltage dividing resistor, and the second switch is connected with the third voltage dividing resistor in series and then connected with the second voltage dividing resistor in parallel.
4. The novel solar controller of claim 1, wherein: the control circuit further comprises a third control switch, the control end of the first control switch is electrically connected to the main circuit of the third control switch, and the output end of the first comparator is electrically connected to the control end of the third control switch.
5. The novel solar controller of claim 4, wherein: the third control switch is an NPN triode; the first control switch is a field effect transistor.
6. The novel solar controller of claim 1, wherein: the battery voltage acquisition circuit is characterized by further comprising a second comparator and an indicator lamp group, wherein the output end of the first comparator is electrically connected to the inverting input end of the second comparator, and the output end of the battery voltage acquisition circuit is electrically connected to the non-inverting input end of the second comparator; the indicating lamp group comprises a first light emitting diode and a second light emitting diode which are connected in parallel and are opposite in energizing direction, one end of the indicating lamp group is electrically connected to the output end of the first comparator, and the other end of the indicating lamp group is electrically connected to the output end of the second comparator.
7. The novel solar controller of claim 6, wherein: the first light emitting diode is a green lamp bead, and the second light emitting diode is a red lamp bead.
8. The novel solar controller of claim 1, wherein: the battery temperature sensor is electrically connected to the output end of the battery voltage acquisition circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222387026.9U CN219304486U (en) | 2022-09-08 | 2022-09-08 | Novel solar energy controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222387026.9U CN219304486U (en) | 2022-09-08 | 2022-09-08 | Novel solar energy controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219304486U true CN219304486U (en) | 2023-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222387026.9U Active CN219304486U (en) | 2022-09-08 | 2022-09-08 | Novel solar energy controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219304486U (en) |
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2022
- 2022-09-08 CN CN202222387026.9U patent/CN219304486U/en active Active
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