Intelligent road lighting energy-saving control circuit

Abstract

The invention discloses an intelligent road lighting energy-saving control circuit, which relates to the technical field of lighting energy-saving control, and comprises a micro-control module for controlling a photovoltaic control module to carry out photovoltaic conversion, power regulation, isolation transformation and electric energy superposition according to the voltage of photovoltaic conversion. When the electric energy of the energy storage control module is lower than a second low-voltage threshold value, the energy storage control module is matched with the auxiliary adjusting module to independently supply power to the second lighting module, and the mains supply module is matched with the photovoltaic control module to supply power to the first lighting module. When the electric energy of the energy storage control module is lower than an underpower threshold value, the commercial power module cooperates with the photovoltaic control module to carry out constant-current and voltage-stabilizing driving on the first lighting module and the second lighting module. The intelligent road lighting energy-saving control circuit can improve the voltage gain, improve the energy-saving effect, improve the electric energy utilization rate and reasonably and efficiently distribute electric energy.

Description

Technical Field

[0001] The present invention relates to the technical field of lighting energy-saving control, and specifically to a smart road lighting energy-saving control circuit. Background Art

[0002] Currently, in the process of urbanization, street lights, as a part of the infrastructure of urban construction, consume a huge amount of energy. To achieve energy-saving control for existing road lighting lamps, generally a hybrid power supply method of commercial power and energy storage devices is adopted. During the lighting operation of road lighting lamps, the energy storage device supplies power to the road lighting lamps. When the energy storage device has low power, it switches to commercial power supply, and the energy storage device is supplied with electrical energy through a photovoltaic power supply method. However, when the photovoltaic power supply is at a low level, power supply cannot continue, resulting in a low utilization rate of photovoltaic electrical energy and a low energy-saving benefit of the circuit. Moreover, when commercial power and the energy storage device are used for hybrid power supply, the driving state of the road lighting lamps cannot be controlled according to the power state of the energy storage device, leading to a low utilization rate of the electrical energy of the energy storage device. Therefore, improvement is needed. Summary of the Invention

[0003] An embodiment of the present invention provides a smart road lighting energy-saving control circuit to solve the problems raised in the above background art.

[0004] According to an embodiment of the present invention, a smart road lighting energy-saving control circuit is provided, including: a commercial power module, a photovoltaic control module, an energy storage control module, a micro-control module, a power regulation module, an auxiliary regulation module, a first lighting module, and a second lighting module;

[0005] The commercial power module is connected to the micro-control module and the power regulation module, and is used for stepping down, rectifying, and filtering the accessed commercial power and outputting first electrical energy. When receiving the first power supply signal output by the micro-control module, it transmits the first electrical energy to the power regulation module;

[0006] The photovoltaic control module is connected to the micro-control module, and is used for photovoltaic conversion. When receiving the first regulation signal output by the micro-control module, it regulates the power of the converted electrical energy and outputs second electrical energy. When receiving the first compensation signal output by the micro-control module, it performs isolation voltage transformation on the converted electrical energy and superimposes it with the second electrical energy, and outputs third electrical energy;

[0007] The energy storage control module is connected to the micro-control module, the power regulation module, and the auxiliary regulation module, and is used for storing the second electrical energy when receiving the first energy storage signal output by the micro-control module, storing the third electrical energy when receiving the second energy storage signal output by the micro-control module, providing fourth electrical energy, and transmitting the fourth electrical energy to the power regulation module when receiving the first discharge signal output by the micro-control module, and transmitting the fourth electrical energy to the auxiliary regulation module when receiving the second discharge signal output by the micro-control module;

[0008] A micro - control module, which is used to output a first adjustment signal during photoelectric conversion, output a first energy - storage signal when the electric energy generated by photoelectric conversion is greater than a set first low - voltage threshold, output a first compensation signal and a second energy - storage signal when the electric energy generated by photoelectric conversion is lower than the first low - voltage threshold, output a second adjustment signal and a drive signal when lighting work needs to be carried out, output a first discharge signal when the electric energy stored in the energy - storage control module is higher than the second low - voltage threshold, output a first power - supply signal, a second discharge signal and a third adjustment signal when the electric energy stored in the energy - storage control module is lower than the second low - voltage threshold, and stop controlling the energy - storage control module when the electric energy stored in the energy - storage control module is lower than the under - voltage threshold;

[0009] A power - regulation module, which is connected to the micro - control module, the photovoltaic control module and the energy - storage control module, and is used to perform power regulation on the first electric energy or the fourth electric energy when receiving the second adjustment signal, superimpose the regulated electric energy with the third electric energy, and output the fifth electric energy;

[0010] An auxiliary - regulation module, which is connected to the energy - storage control module and the micro - control module, and is used to perform power regulation on the fourth electric energy and output the sixth electric energy when receiving the third adjustment signal;

[0011] A first lighting module, which is connected to the power - regulation module, and is used to receive the fifth electric energy and carry out lighting work;

[0012] A second lighting module, which is connected to the micro - control module, the power - regulation module, the first lighting module and the auxiliary - regulation module, and is used to be connected in series with the first lighting module and perform constant - current and constant - voltage lighting work with the first lighting module when receiving the drive signal, and receive the sixth electric energy and carry out lighting work alone when receiving the third adjustment signal.

[0013] As a further solution of the present invention: The mains - power module includes a mains - power interface, an electric - energy exchange device and an eleventh power transistor; The micro - control module includes a first controller;

[0014] Preferably, the first end and the second end of the mains - power interface are respectively connected to the first end and the second end of the electric - energy exchange device, the third end of the electric - energy exchange device is connected to the drain of the eleventh power transistor, the source of the first power transistor is connected to the power - regulation module, the fourth end of the electric - energy conversion device is grounded, and the gate of the eleventh power transistor is connected to the IO6 terminal of the first controller.

[0015] As a further solution of the present invention: The power - regulation module includes a third inductor, a first diode, a third capacitor, a fourth inductor and a second power transistor;

[0016] Preferably, the first end of the third inductor is connected to the source of the eleventh power transistor and the energy storage control module, the second end of the third inductor is connected to the anode of the first diode and the drain of the second power transistor, the cathode of the first diode is connected to the first end of the third capacitor and the first end of the fourth inductor, the second end of the fourth inductor is connected to the first lighting module and the second lighting module, the second end of the third capacitor is connected to the photovoltaic control module, the source of the second power transistor is connected to the fourth end of the power conversion device, and the gate of the second power transistor is connected to the IO2 terminal of the first controller.

[0017] As a further aspect of the present invention: The photovoltaic control module includes a photovoltaic power source, a first inductor, a first transformer, a second inductor, a first thyristor, a third diode, a first power transistor, a second diode, a second capacitor, and a first capacitor;

[0018] Preferably, the first end of the photovoltaic power source is connected to the first end of the primary side of the first transformer and is connected to one end of the first thyristor and one end of the second inductor through the first inductor, the other end of the first thyristor is connected to the second end of the primary side of the first transformer, the second end of the second inductor is connected to the anode of the third diode and the drain of the first power transistor, the cathode of the third diode is connected to one end of the second capacitor, the first end of the secondary side of the first transformer, and is connected to the source of the first power transistor, the second end of the photovoltaic power source, and the fourth end of the power conversion device through the first capacitor, the second end of the secondary side of the first transformer is connected to the anode of the second diode, the cathode of the second diode is connected to the other end of the second capacitor and the second end of the third capacitor, and the gate of the first power transistor and the control terminal of the first thyristor are respectively connected to the IO1 terminal and the IO7 terminal of the first controller.

[0019] As a further aspect of the present invention: The first lighting module includes a fourth diode, a fourth capacitor, and a first LED group;

[0020] Preferably, the anode of the fourth diode is connected to the second end of the fourth inductor, and the cathode of the fourth diode is connected to the first end of the first LED group and is connected to the second lighting module and the second end of the first LED group through the fourth capacitor.

[0021] As a further aspect of the present invention: The second lighting module includes a fourth power transistor, a fifth power transistor, a fifth diode, a third power transistor, a fifth capacitor, and a second LED group;

[0022] Preferably, the drain of the fourth power transistor is connected to the anode of the fourth diode, the source of the fourth power transistor is connected to the second end of the first LED group, the drain of the fifth power transistor, the anode of the fifth diode, and the drain of the third power transistor, the cathode of the fifth diode is connected to the first end of the second LED group and is connected to the second end of the second LED group, the source of the third power transistor, and the ground terminal through the fifth capacitor, and the gates of the third power transistor, the fourth power transistor, and the fifth power transistor are respectively connected to the IO3 terminal, the IO4 terminal, and the IO5 terminal of the first controller.

[0023] As a further aspect of the present invention: the energy storage control module includes an energy storage device, an eighth power transistor, a ninth power transistor, a sixth power transistor, a seventh power transistor, a sixth diode and a seventh diode;

[0024] Preferably, the first end of the energy storage device is connected to the source of the ninth power transistor, the source of the eighth power transistor, the drain of the sixth power transistor and the drain of the seventh power transistor. The drain of the ninth power transistor and the drain of the eighth power transistor are respectively connected to the cathode of the second diode and the cathode of the third diode. The source of the sixth power transistor and the source of the seventh power transistor are respectively connected to the anode of the sixth diode and the anode of the seventh diode. The cathode of the sixth diode is connected to the first end of the third inductor. The cathode of the seventh diode is connected to the auxiliary regulation module. The gates of the sixth power transistor, the seventh power transistor, the eighth power transistor and the ninth power transistor are respectively connected to the IO10 terminal, the IO5 terminal, the IO8 terminal and the IO9 terminal of the first controller. The second end of the energy storage device is grounded.

[0025] As a further aspect of the present invention: the auxiliary regulation module includes a fifth inductor, an eighth diode and a tenth power transistor;

[0026] Preferably, the anode of the eighth diode is connected to the drain of the tenth power transistor and is connected to the cathode of the seventh diode through the fifth inductor. The cathode of the eighth diode is connected to the first end of the second LED group. The source of the tenth power transistor is connected to the second end of the second LED group and the ground terminal. The gate of the tenth power transistor is connected to the IO11 terminal of the first controller.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: the intelligent road lighting energy-saving control circuit of the present invention can control the photoelectric conversion and power regulation state of the photovoltaic control module according to the voltage magnitude of the photoelectric conversion by the micro-control module, realize power regulation, isolation transformation and electric energy superposition processing, improve the voltage gain, and cope with different light intensities, so that when the road lighting lamp is in the lighting operation, the electric energy generated by the photovoltaic control module is still utilized to improve the energy-saving effect. At the same time, during the lighting operation of the road lighting lamp, the energy storage control module cooperates with the photovoltaic control module for hybrid power supply, and performs constant current and constant voltage drive control on the first lighting module and the second lighting module. When the electric energy of the energy storage control module is lower than the second low voltage threshold, it will control the energy storage control module to cooperate with the auxiliary regulation module to supply power to the second lighting module alone, and the mains power module cooperates with the photovoltaic control module to supply power to the first lighting module, improving the utilization rate of the electric energy of the energy storage control module. When the electric energy of the energy storage control module is lower than the under-voltage threshold, the mains power module will cooperate with the photovoltaic control module to perform constant current and constant voltage drive on the first lighting module and the second lighting module, and reasonably and efficiently distribute the electric energy. Description of the Drawings

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0029] Figure 1 It is a schematic block diagram of the principle of an intelligent road lighting energy-saving control circuit provided by an embodiment of the present invention.

[0030] Figure 2 It is a circuit diagram of an intelligent road lighting energy-saving control circuit provided by an embodiment of the present invention.

[0031] Figure 3 It is a circuit diagram of an energy storage control module provided by an embodiment of the present invention.

[0032] Figure 4 It is a circuit diagram of an auxiliary adjustment module provided by an embodiment of the present invention. Specific Embodiments

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0034] In one embodiment, please refer to Figure 1 , an intelligent road lighting energy-saving control circuit, including: a mains power module 1, a photovoltaic control module 2, an energy storage control module 3, a micro-control module 4, a power adjustment module 5, an auxiliary adjustment module 6, a first lighting module 7, and a second lighting module 8;

[0035] Specifically, the mains power module 1 is connected to the micro-control module 4 and the power adjustment module 5, and is used to step down, rectify, and filter the connected mains power and output the first electric energy. When receiving the first power supply signal output by the micro-control module 4, it transmits the first electric energy to the power adjustment module 5;

[0036] The photovoltaic control module 2 is connected to the micro-control module 4 and is used for photoelectric conversion. When receiving the first adjustment signal output by the micro-control module 4, it adjusts the power of the converted electric energy and outputs the second electric energy. When receiving the first compensation signal output by the micro-control module 4, it performs isolation and voltage transformation on the converted electric energy and superimposes it with the second electric energy, and outputs the third electric energy;

[0037] The energy storage control module 3, connected to the micro-control module 4, the power regulation module 5, and the auxiliary regulation module 6, is used to store the second electric energy when receiving the first energy storage signal output by the micro-control module 4, store the third electric energy when receiving the second energy storage signal output by the micro-control module 4, provide the fourth electric energy, and when receiving the first discharge signal output by the micro-control module 4, transmit the fourth electric energy to the power regulation module 5, and when receiving the second discharge signal output by the micro-control module 4, transmit the fourth electric energy to the auxiliary regulation module 6;

[0038] The micro-control module 4 is used to output the first regulation signal during the photovoltaic conversion, output the first energy storage signal when the electric energy of the photovoltaic conversion is greater than the set first low voltage threshold, output the first compensation signal and the second energy storage signal when the electric energy of the photovoltaic conversion is lower than the first low voltage threshold, output the second regulation signal and the drive signal when lighting work is required, and output the first discharge signal when the electric energy stored in the energy storage control module 3 is higher than the second low voltage threshold, output the first power supply signal, the second discharge signal, and the third regulation signal when the stored electric energy is lower than the second low voltage threshold, and stop controlling the energy storage control module 3 when the stored electric energy is lower than the under-voltage threshold;

[0039] The power regulation module 5, connected to the micro-control module 4, the photovoltaic control module 2, and the energy storage control module 3, is used to perform power regulation on the first electric energy or the fourth electric energy when receiving the second regulation signal, and perform superposition processing on the regulated electric energy and the third electric energy to output the fifth electric energy;

[0040] The auxiliary regulation module 6, connected to the energy storage control module 3 and the micro-control module 4, is used to perform power regulation on the fourth electric energy and output the sixth electric energy when receiving the third regulation signal;

[0041] The first lighting module 7, connected to the power regulation module 5, is used to receive the fifth electric energy and perform lighting work;

[0042] The second lighting module 8, connected to the micro-control module 4, the power regulation module 5, the first lighting module 7, and the auxiliary regulation module 6, is used to be connected in series with the first lighting module 7 and perform constant current and constant voltage lighting work with the first lighting module 7 when receiving the drive signal, and receive the sixth electric energy and perform lighting work alone when receiving the third regulation signal.

[0043] In a specific embodiment, the above-mentioned mains power module 1 can adopt a mains power circuit composed of a mains power interface, a power conversion device, and a field effect transistor, connect to the mains power and perform step-down, rectification filtering, and power transmission control on the mains power; the above-mentioned photovoltaic control module 2 can adopt a photovoltaic control circuit composed of a photovoltaic power source, an inductor, a transformer, a field effect transistor, etc., can perform photoelectric conversion, and perform power regulation, isolation transformation, and power superposition processing according to the voltage magnitude of the electric energy after photoelectric conversion; the above-mentioned energy storage control module 3 can adopt an energy storage control circuit composed of an energy storage device, a field effect transistor, and a diode, can perform power transmission control, energy storage, and discharge control; the above-mentioned micro-control module 4 can adopt a micro-control circuit composed of a single-chip microcomputer and a resistor. The single-chip microcomputer integrates many components such as an arithmetic unit, a controller, a memory, a comparator, and an input / output unit, and realizes functions such as signal processing, data storage, module control, timing control, and voltage comparison. The first low voltage threshold, the second low voltage threshold, and the under-voltage threshold are set by the resistor, voltage sampling is performed on the energy storage control module 3 and the photovoltaic control module 2, and the set threshold is compared with the sampled signal. The first low voltage threshold is the electric energy generated by photoelectric conversion when the first lighting module 7 and the second lighting module 8 perform lighting work, and the second low voltage threshold is the lowest working voltage when the first lighting module 7 and the second lighting module 8 are connected in series for lighting work; the above-mentioned power regulation module 5 can adopt a power regulation and power superposition processing composed of a field effect transistor, a diode, an inductor, etc.; the above-mentioned auxiliary regulation module 6 can adopt an auxiliary regulation circuit composed of a field effect transistor, an inductor, and a diode, perform power regulation and supply power to the second lighting module 8; the above-mentioned first lighting module 7 can adopt a first lighting circuit composed of a diode, an LED group, and a capacitor, and perform lighting work; the above-mentioned second lighting module 8 can adopt a second lighting circuit composed of a field effect transistor, an LED group, a capacitor, etc., and can control the connection state with the first lighting module 7, that is, the series connection and the separate connection states, and realize separate lighting and constant current and constant voltage lighting work with the first lighting module 7.

[0044] In another embodiment, please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , the mains power module 1 includes a mains power interface, a power exchange device, and an eleventh power transistor Q11; the micro-control module 4 includes a first controller U1;

[0045] Specifically, the first end and the second end of the mains power interface are respectively connected to the first end and the second end of the power exchange device. The third end of the power exchange device is connected to the drain of the eleventh power transistor Q11. The source of the first power transistor Q1 is connected to the power regulation module 5. The fourth end of the power conversion device is grounded. The gate of the eleventh power transistor Q11 is connected to the IO6 terminal of the first controller U1.

[0046] In a specific embodiment, the above-mentioned power conversion device may be composed of a transformer, a rectifier, and a filter; the above-mentioned eleventh power transistor Q11 may be an N-channel field effect transistor with a body diode; the above-mentioned first controller U1 may be composed of an STM32 single-chip microcomputer, and may cooperate with a resistor (not shown) to perform voltage sampling on the electric energy stored in the energy storage control module 3, perform voltage sampling on the electric energy generated by the photovoltaic control module 2 through photoelectric conversion, set a first low voltage threshold, a second low voltage threshold, and an under-voltage threshold, and perform voltage comparison based on the sampled signal and the set threshold.

[0047] Further, the power adjustment module 5 includes a third inductor L3, a first diode D1, a third capacitor C3, a fourth inductor L4, and a second power transistor Q2;

[0048] Specifically, the first end of the third inductor L3 is connected to the source of the eleventh power transistor Q11 and the energy storage control module 3, the second end of the third inductor L3 is connected to the anode of the first diode D1 and the drain of the second power transistor Q2, the cathode of the first diode D1 is connected to the first end of the third capacitor C3 and the first end of the fourth inductor L4, the second end of the fourth electric energy is connected to the first lighting module 7 and the second lighting module 8, the second end of the third capacitor C3 is connected to the photovoltaic control module 2, the source of the second power transistor Q2 is connected to the fourth end of the power conversion device, and the gate of the second power transistor Q2 is connected to the IO2 terminal of the first controller U1.

[0049] In a specific embodiment, the above-mentioned second power transistor Q2 may be an N-channel field effect transistor with a body diode, and cooperate with the third inductor L3, the first diode D1, and the third capacitor C3 to perform boost adjustment processing; the above-mentioned fourth inductor L4 cooperates with the third capacitor C3 to store and supply electric energy.

[0050] Further, the photovoltaic control module 2 includes a photovoltaic power source, a first inductor L1, a first transformer B1, a second inductor L2, a first thyristor S1, a third diode D3, a first power transistor Q1, a second diode D3, a second capacitor C2, and a first capacitor C1;

[0051] Specifically, the first end of the photovoltaic power supply is connected to the first end of the primary side of the first transformer B1 and is connected to one end of the first thyristor S1 and one end of the second inductor L2 through the first inductor L1. The other end of the first thyristor S1 is connected to the second end of the primary side of the first transformer B1. The second end of the second inductor L2 is connected to the anode of the third diode D3 and the drain of the first power transistor Q1. The cathode of the third diode D3 is connected to one end of the second capacitor C2, the first end of the secondary side of the first transformer B1, and is connected to the source of the first power transistor Q1, the second end of the photovoltaic power supply, and the fourth end of the power conversion device through the first capacitor C1. The second end of the secondary side of the first transformer B1 is connected to the anode of the second diode D3. The cathode of the second diode D3 is connected to the other end of the second capacitor C2 and the second end of the third capacitor C3. The gate of the first power transistor Q1 and the control end of the first thyristor S1 are respectively connected to the IO1 end and the IO7 end of the first controller U1.

[0052] In a specific embodiment, the above-mentioned first inductor L1 and second inductor L2 are respectively the exciting inductor and the leakage inductor of the first transformer B1; the above-mentioned first power transistor Q1 can be selected as an N-channel field effect transistor with a body diode and a capacitor; the above-mentioned first thyristor S1 can be selected as a bidirectional thyristor; the above-mentioned second capacitor C2 and first capacitor C1 can perform filtering and power superposition processing.

[0053] Further, the first lighting module 7 includes a fourth diode D4, a fourth capacitor C4, and a first LED group;

[0054] Specifically, the anode of the fourth diode D4 is connected to the second end of the fourth inductor L4. The cathode of the fourth diode D4 is connected to the first end of the first LED group and is connected to the second lighting module 8 and the second end of the first LED group through the fourth capacitor C4.

[0055] In a specific embodiment, the above-mentioned first LED group can be composed of multiple single LEDs connected in series and parallel.

[0056] Further, the second lighting module 8 includes a fourth power transistor Q4, a fifth power transistor Q5, a fifth diode D5, a third power transistor Q3, a fifth capacitor C5, and a second LED group;

[0057] Specifically, the drain of the fourth power transistor Q4 is connected to the anode of the fourth diode D4. The source of the fourth power transistor Q4 is connected to the second end of the first LED group, the drain of the fifth power transistor Q5, the anode of the fifth diode D5, and the drain of the third power transistor Q3. The cathode of the fifth diode D5 is connected to the first end of the second LED group and is connected to the second end of the second LED group, the source of the third power transistor Q3, and the ground terminal through the fifth capacitor C5. The gates of the third power transistor Q3, the fourth power transistor Q4, and the fifth power transistor Q5 are respectively connected to the IO3 end, the IO4 end, and the IO5 end of the first controller U1.

[0058] In a specific embodiment, the type selection of the above-mentioned second LED group is the same as that of the first LED group; both the above-mentioned fourth power transistor Q4 and the third power transistor Q3 can be selected as N-channel field effect transistors to control the constant current and regulated voltage lighting operation of the first LED group and the second LED group; the above-mentioned fifth power transistor Q5 can be selected as an N-channel field effect transistor with a body diode to control the independent lighting operation of the first lighting module 7.

[0059] Further, the energy storage control module 3 includes an energy storage device, an eighth power transistor Q8, a ninth power transistor Q9, a sixth power transistor Q6, a seventh power transistor Q7, a sixth diode D6, and a seventh diode D7;

[0060] Specifically, the first end of the energy storage device is connected to the source electrode of the ninth power transistor Q9, the source electrode of the eighth power transistor Q8, the drain electrode of the sixth power transistor Q6, and the drain electrode of the seventh power transistor Q7. The drain electrodes of the ninth power transistor Q9 and the eighth power transistor Q8 are respectively connected to the cathode of the second diode D3 and the cathode of the third diode D3. The source electrodes of the sixth power transistor Q6 and the seventh power transistor Q7 are respectively connected to the anode of the sixth diode D6 and the anode of the seventh diode D7. The cathode of the sixth diode D6 is connected to the first end of the third inductor L3. The cathode of the seventh diode D7 is connected to the auxiliary adjustment module 6. The gate electrodes of the sixth power transistor Q6, the seventh power transistor Q7, the eighth power transistor Q8, and the ninth power transistor Q9 are respectively connected to the IO10 terminal, the IO5 terminal, the IO8 terminal, and the IO9 terminal of the first controller U1. The second end of the energy storage device is grounded.

[0061] In a specific embodiment, the above-mentioned energy storage device can be selected as a storage battery; both the above-mentioned ninth power transistor Q9 and the eighth power transistor Q8 can be selected as N-channel field effect transistors with body diodes for charging control; both the above-mentioned sixth power transistor Q6 and the seventh power transistor Q7 can be selected as N-channel field effect transistors with body diodes for discharging control.

[0062] Further, the auxiliary adjustment module 6 includes a fifth inductor L5, an eighth diode Q8, and a tenth power transistor Q10;

[0063] Specifically, the anode of the eighth diode Q8 is connected to the drain electrode of the tenth power transistor Q10 and is connected to the cathode of the seventh diode D7 through the fifth inductor L5. The cathode of the eighth diode Q8 is connected to the first end of the second LED group. The source electrode of the tenth power transistor Q10 is connected to the second end of the second LED group and the ground terminal. The gate electrode of the tenth power transistor Q10 is connected to the IO11 terminal of the first controller U1.

[0064] In a specific embodiment, the above-mentioned tenth power transistor Q10 can be selected as an N-channel field effect transistor with a body diode to cooperate with the fifth inductor L5 and the eighth capacitor for boost regulation.

[0065] In a smart road lighting energy-saving control circuit of this embodiment, when the road lighting lamps, namely the first LED group and the second LED group, are not in the lighting working state, the photovoltaic power supply will perform photoelectric conversion. During the photoelectric conversion, the IO1 terminal of the first controller U1 outputs a first adjustment signal to control the conduction state of the first power transistor Q1, and cooperates with the first inductor L1, the second inductor L2, the third diode D3 and the first capacitor C1 to perform power adjustment processing, output the second electric energy, and the first controller U1 detects the voltage magnitude of the converted electric energy and the set first low-voltage threshold. When the electric energy of the photoelectric conversion is greater than the set first low-voltage threshold, the IO8 terminal of the first controller U1 outputs a first energy storage signal to control the eighth power transistor Q8 to conduct, so that the second electric energy is stored by the energy storage device. When the electric energy of the photoelectric conversion is lower than the first low-voltage threshold, the IO7 terminal of the first controller U1 outputs a first compensation signal to control the first thyristor S1 to conduct, so that the first transformer B1 is connected and performs isolation voltage transformation processing. The electric energy output from the secondary side of the first transformer B1 is subjected to electric energy superposition processing through the second capacitor C2 and the first capacitor C1, and the third electric energy is output. The IO9 terminal of the first controller U1 outputs a second energy storage signal to control the ninth power transistor Q9 to transmit the third electric energy to the energy storage device. During the lighting working period of the first LED group and the second LED group, since the first LED group and the second LED group are stably illuminated, the photovoltaic control module 2 also generates electric energy but the generated electric energy is lower than the first low-voltage threshold. The micro-control module 4 will control the third electric energy output by the photovoltaic control module 2, and the third electric energy is relatively stable. At the same time, when lighting work needs to be carried out, the IO2 terminal of the first controller U1 outputs a second adjustment signal to cooperate with the third inductor L3 and the first diode D1 to boost the input electric energy. At the same time, when the electric energy stored in the energy storage device is higher than the second low-voltage threshold, the IO10 terminal of the first controller U1 outputs a first discharge signal and controls the sixth power transistor Q6 to conduct. The electric energy released by the energy storage device is transmitted to the power adjustment module 5 through the sixth power transistor Q6. After being regulated by the isolation adjustment module, it supplies power to the first lighting module 7 and the second lighting module 8. At the same time, the first controller U1 outputs a driving signal to control the first lighting module 7 and the second lighting module 8 to perform constant current and constant voltage lighting work. Specifically, first control the fourth power transistor Q4 and the third power transistor Q3 to conduct. The second capacitor C2, the third capacitor C3 and the first capacitor C1 are connected in series to supply power and form a loop with the fourth inductor L4. The fourth inductor L4 stores electric energy. After sequentially disconnecting the third power transistor Q3 and the fourth power transistor Q4, then control the second LED group and the second LED group to perform constant current and constant voltage lighting work. When the electric energy stored in the energy storage device is lower than the second low-voltage threshold, the IO6 terminal of the first controller U1 outputs a first power supply signal and controls the eleventh power transistor Q11 to conduct, so that the mains interface cooperates with the photovoltaic power supply for superimposed power supply, and the IO5 terminal of the first controller U1 outputs a second discharge signal and controls the conduction of the fifth power transistor Q5 and the seventh power transistor Q7.Enable the power adjustment module 5 to drive the lighting operation of the first LED group. The IO11 terminal of the first controller U1 outputs a third adjustment signal and controls the tenth power transistor Q10 to conduct. Cooperate with the fifth inductor L5 and the eighth diode Q8 to adjust the electric energy released by the energy storage device and independently drive the lighting of the second LED group. When the electric energy stored in the energy storage device is lower than the under-voltage threshold, the energy storage device stops discharging. At this time, the micro-control module 4 controls the power supply of the mains module 1, and the power adjustment module 5 and the photovoltaic control module 2 perform superimposed power supply and drive the second LED group and the second LED group to perform constant current and constant voltage lighting operation.

[0066] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0067] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A smart road lighting energy-saving control circuit, characterized in that: The smart road lighting energy-saving control circuit includes: a mains power module, a photovoltaic control module, an energy storage control module, a micro-control module, a power regulation module, an auxiliary regulation module, a first lighting module, and a second lighting module; The mains power module is connected to the micro-control module and the power regulation module, and is used for stepping down, rectifying, and filtering the accessed mains power and outputting the first electric energy. When receiving the first power supply signal output by the micro-control module, it transmits the first electric energy to the power regulation module; The photovoltaic control module is connected to the micro-control module and is used for photoelectric conversion. When receiving the first regulation signal output by the micro-control module, it regulates the power of the converted electric energy and outputs the second electric energy. When receiving the first compensation signal output by the micro-control module, it performs isolation and voltage transformation on the converted electric energy and superimposes it with the second electric energy, and outputs the third electric energy; The energy storage control module is connected to the micro-control module, the power regulation module, and the auxiliary regulation module, and is used for storing the second electric energy when receiving the first energy storage signal output by the micro-control module, storing the third electric energy when receiving the second energy storage signal output by the micro-control module, providing the fourth electric energy, and transmitting the fourth electric energy to the power regulation module when receiving the first discharge signal output by the micro-control module, and transmitting the fourth electric energy to the auxiliary regulation module when receiving the second discharge signal output by the micro-control module; The micro-control module is used for outputting the first regulation signal during photoelectric conversion, outputting the first energy storage signal when the electric energy of photoelectric conversion is greater than the set first low voltage threshold, outputting the first compensation signal and the second energy storage signal when the electric energy of photoelectric conversion is lower than the first low voltage threshold, outputting the second regulation signal and the drive signal when lighting work is required, outputting the first discharge signal when the electric energy stored in the energy storage control module is higher than the second low voltage threshold, outputting the first power supply signal, the second discharge signal, and the third regulation signal when the electric energy stored is lower than the second low voltage threshold, and stopping controlling the energy storage control module when the electric energy stored is lower than the under-voltage threshold; The power regulation module is connected to the micro-control module, the photovoltaic control module, and the energy storage control module, and is used for regulating the power of the first electric energy or the fourth electric energy when receiving the second regulation signal, and superimposing the regulated electric energy with the third electric energy, and outputting the fifth electric energy; The auxiliary regulation module is connected to the energy storage control module and the micro-control module, and is used for regulating the power of the fourth electric energy and outputting the sixth electric energy when receiving the third regulation signal; The first lighting module is connected to the power regulation module and is used for receiving the fifth electric energy and performing lighting work; The second lighting module is connected to the micro-control module, the power regulation module, the first lighting module, and the auxiliary regulation module, and is used for being connected in series with the first lighting module and performing constant current and constant voltage lighting work with the first lighting module when receiving the drive signal, and receiving the sixth electric energy and performing lighting work alone when receiving the third regulation signal.

2. The intelligent road lighting energy-saving control circuit according to claim 1, characterized in that, The mains power module includes a mains power interface, a power exchange device, and an eleventh power transistor; the micro-control module includes a first controller; The first end and the second end of the mains power interface are respectively connected to the first end and the second end of the power exchange device. The third end of the power exchange device is connected to the drain of the eleventh power transistor. The source of the first power transistor is connected to the power regulation module. The fourth end of the power conversion device is grounded. The gate of the eleventh power transistor is connected to the IO6 terminal of the first controller.

3. The intelligent road lighting energy-saving control circuit according to claim 2, wherein, The power regulation module includes a third inductor, a first diode, a third capacitor, a fourth inductor, and a second power transistor; The first end of the third inductor is connected to the source of the eleventh power transistor and the energy storage control module. The second end of the third inductor is connected to the anode of the first diode and the drain of the second power transistor. The cathode of the first diode is connected to the first end of the third capacitor and the first end of the fourth inductor. The second end of the fourth inductor is connected to the first lighting module and the second lighting module. The second end of the third capacitor is connected to the photovoltaic control module. The source of the second power transistor is connected to the fourth end of the power conversion device. The gate of the second power transistor is connected to the IO2 terminal of the first controller.

4. The intelligent road lighting energy-saving control circuit according to claim 3, wherein The photovoltaic control module includes a photovoltaic power source, a first inductor, a first transformer, a second inductor, a first thyristor, a third diode, a first power transistor, a second diode, a second capacitor, and a first capacitor; The first end of the photovoltaic power source is connected to the first end of the primary side of the first transformer and is connected to one end of the first thyristor and one end of the second inductor through the first inductor. The other end of the first thyristor is connected to the second end of the primary side of the first transformer. The second end of the second inductor is connected to the anode of the third diode and the drain of the first power transistor. The cathode of the third diode is connected to one end of the second capacitor, the first end of the secondary side of the first transformer, and is connected to the source of the first power transistor, the second end of the photovoltaic power source, and the fourth end of the power conversion device through the first capacitor. The second end of the secondary side of the first transformer is connected to the anode of the second diode. The cathode of the second diode is connected to the other end of the second capacitor and the second end of the third capacitor. The gate of the first power transistor and the control terminal of the first thyristor are respectively connected to the IO1 terminal and the IO7 terminal of the first controller.

5. The intelligent road lighting energy-saving control circuit according to claim 4, characterized in that, The first lighting module includes a fourth diode, a fourth capacitor, and a first LED group; The anode of the fourth diode is connected to the second end of the fourth inductor. The cathode of the fourth diode is connected to the first end of the first LED group and is connected to the second lighting module and the second end of the first LED group through the fourth capacitor.

6. The intelligent road lighting energy-saving control circuit according to claim 5, characterized in that, The second lighting module includes a fourth power transistor, a fifth power transistor, a fifth diode, a third power transistor, a fifth capacitor, and a second LED group; The drain of the fourth power transistor is connected to the anode of the fourth diode. The source of the fourth power transistor is connected to the second end of the first LED group, the drain of the fifth power transistor, the anode of the fifth diode, and the drain of the third power transistor. The cathode of the fifth diode is connected to the first end of the second LED group and is connected to the second end of the second LED group, the source of the third power transistor, and the ground terminal through the fifth capacitor. The gates of the third power transistor, the fourth power transistor, and the fifth power transistor are respectively connected to the IO3 terminal, the IO4 terminal, and the IO5 terminal of the first controller.

7. The intelligent road lighting energy-saving control circuit according to claim 6, characterized in that, The energy storage control module includes an energy storage device, an eighth power transistor, a ninth power transistor, a sixth power transistor, a seventh power transistor, a sixth diode, and a seventh diode; The first end of the energy storage device is connected to the source of the ninth power transistor, the source of the eighth power transistor, the drain of the sixth power transistor, and the drain of the seventh power transistor. The drain of the ninth power transistor and the drain of the eighth power transistor are respectively connected to the cathode of the second diode and the cathode of the third diode. The source of the sixth power transistor and the source of the seventh power transistor are respectively connected to the anode of the sixth diode and the anode of the seventh diode. The cathode of the sixth diode is connected to the first end of the third inductor. The cathode of the seventh diode is connected to the auxiliary adjustment module. The gates of the sixth power transistor, the seventh power transistor, the eighth power transistor, and the ninth power transistor are respectively connected to the IO10 terminal, the IO5 terminal, the IO8 terminal, and the IO9 terminal of the first controller. The second end of the energy storage device is grounded.

8. The intelligent road lighting energy-saving control circuit according to claim 7, wherein The auxiliary adjustment module includes a fifth inductor, an eighth diode, and a tenth power transistor; The anode of the eighth diode is connected to the drain of the tenth power transistor and is connected to the cathode of the seventh diode through the fifth inductor. The cathode of the eighth diode is connected to the first end of the second LED group. The source of the tenth power transistor is connected to the second end of the second LED group and the ground terminal. The gate of the tenth power transistor is connected to the IO11 terminal of the first controller.

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