Wind-solar complementary power supply system and landscape type street lamp

Abstract

The invention relates to the technical field of new energy, in particular to a wind-solar complementary power supply system and a landscape type street lamp, and the system comprises a voltage detection unit, an electric energy controller and a power detection unit. The voltage detection unit is connected with the energy storage power supply and the electric energy controller and used for detecting the port voltage of the energy storage power supply, and when the voltage is lower than a preset threshold value, a first conduction signal is output to the electric energy controller, and the power supply connection between the photovoltaic assembly and the street lamp illumination assembly is conducted. The power detection unit detects the discharge power of the photovoltaic module and the target power utilization power of the street lamp lighting module, calculates a power difference value and outputs an electric signal to the electric energy controller. If the power difference value is negative, the electric energy controller conducts power supply connection between the wind power generation assembly and the street lamp illumination assembly, and insufficient electric energy of photovoltaic power generation is supplemented. According to the system, photovoltaic power generation and wind power generation are complementary, an energy storage power supply and intelligent control are combined, and the power supply stability of the landscape type street lamp is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of new energy technology, and in particular to a wind-solar hybrid power system and a landscape street light. Background Technology

[0002] With the acceleration of urbanization and the popularization of green energy concepts, landscape streetlights, as an important component of urban lighting, are increasingly adopting photovoltaic (PV) power generation technology to power lighting components, especially colored LED light sources. PV power generation technology converts solar energy into electricity, offering advantages such as cleanliness and renewability, effectively reducing the consumption of traditional energy sources and environmental pollution. However, the power supply stability of PV power generation is relatively poor, mainly affected by weather conditions, diurnal variations, and seasonal changes. Summary of the Invention

[0003] The main objective of this invention is to provide a wind-solar hybrid power system and a landscape street light, aiming to solve the technical problem that existing landscape street lights typically use photovoltaic power generation to power the street light lighting components, but relying solely on photovoltaic power generation results in poor power supply stability.

[0004] To achieve the above objectives, the present invention provides a wind-solar hybrid power system, the system comprising: a voltage detection unit, a power controller, and a power detection unit; The voltage detection unit is connected to the energy storage power supply and the power controller, and the power controller is connected to the power detection unit, the energy storage power supply, the street lighting component, the photovoltaic component and the wind power generation component. The voltage detection unit is used to detect the port voltage of the energy storage power supply, and when the voltage value of the port voltage is lower than a preset voltage threshold, it outputs a first conduction signal to the power controller. The power controller is used to connect the power supply between the photovoltaic module and the street lighting module when the first conduction signal is received; The power detection unit is used to detect the discharge power of the photovoltaic module and obtain the target power consumption of the street lighting module, calculate the power difference between the discharge power and the target power consumption, and output the electrical signal corresponding to the power difference to the power controller. The power controller is also used to connect the power supply between the wind power generation component and the street lighting component when the power difference is negative, so that the wind power generation component outputs electrical energy with a discharge power lower than the target power consumption for power supply.

[0005] Optionally, the system further includes: a light intensity detection unit; The light intensity detection unit is connected to the power detection unit; The light intensity detection unit is used to detect the light intensity of the street light environment, and when the light intensity is lower than a preset light intensity threshold, it outputs a light intensity electrical signal corresponding to the light intensity to the power detection unit. The power detection unit is used to determine the target power consumption of the street light lighting component based on the voltage value of the light intensity electrical signal. The lower the voltage value of the light intensity electrical signal, the higher the target power consumption of the street light lighting component.

[0006] Optionally, it is also used to connect the power supply connection between the photovoltaic module and the street lighting module and the power supply connection between the wind power generation module and the street lighting module when the power difference is positive, so that the photovoltaic module outputs electrical energy with a discharge power exceeding the target power consumption and the wind power generation module outputs electrical energy to the energy storage power source for storage.

[0007] Optionally, the power controller is further configured to, when the power difference is positive, adjust the sum of the power difference and the power output of the wind power generation component to the preset maximum charging power of the energy storage power source if the sum of the power difference and the power output of the wind power generation component is greater than the preset maximum charging power of the energy storage power source.

[0008] Optionally, the power detection unit is further configured to detect the discharge power of the wind power generation module, determine the total discharge power of the wind power generation module and the photovoltaic module in combination with the discharge power of the photovoltaic module, and output a second conduction signal to the power controller when the power difference between the total discharge power and the target power consumption of the street lighting module is negative. The power controller is also connected to the power grid. When it receives the second conduction signal, it conducts the power supply connection between the power grid and the street light lighting component so that the power grid supplies power to the street light lighting component.

[0009] Optionally, the power controller includes: a control chip, first to third power regulation circuits, first to fourth switching transistors, and first to fourth resistors; The control chip has the following configuration: a first input terminal connected to the power detection unit; a second input terminal connected to the voltage detection unit; a first output terminal connected to the control terminal of the first switching transistor; a second output terminal connected to the control terminal of the second switching transistor; a third output terminal connected to the control terminal of the third switching transistor; a fourth output terminal connected to the control terminal of the fourth switching transistor; an input terminal of the first switching transistor connected to the first power adjustment circuit; an output terminal of the first switching transistor connected to the first terminal of the first resistor; a second terminal of the first resistor connected to the street light lighting assembly; and an input terminal of the second switching transistor connected to the second power adjustment circuit. The output terminal of the third switching transistor is connected to the first terminal of the second resistor, the second terminal of the second resistor is connected to the street lighting assembly, the input terminal of the third switching transistor is connected to the first power regulation circuit and the second power regulation circuit, the output terminal of the third switching transistor is connected to the first terminal of the third resistor, the second terminal of the third resistor is connected to the energy storage power supply, the input terminal of the fourth switching transistor is connected to the third power regulation circuit, the output terminal of the fourth switching transistor is connected to the first terminal of the fourth resistor, the second terminal of the fourth resistor is connected to the street lighting assembly, the first power regulation circuit is connected to the photovoltaic assembly, the second power regulation circuit is connected to the wind power generation assembly, and the third power regulation circuit is connected to the power grid. The first power regulation circuit is used to regulate the output power of the photovoltaic module, the second power regulation circuit is used to regulate the output power of the wind power generation module, and the third power regulation circuit is used to regulate the output power of the power grid.

[0010] Optionally, the voltage detection unit includes: a fifth to a sixth resistor and a first comparator; The first end of the fifth resistor is connected to the power port of the energy storage power supply, the second end of the fifth resistor is connected to the positive input terminal of the first comparator, the negative input terminal of the first comparator is connected to the first reference power supply, the output terminal of the first comparator is connected to the first end of the sixth resistor, and the second end of the sixth resistor is connected to the second input terminal of the control chip.

[0011] Optionally, the light intensity detection unit includes: a seventh resistor and a second comparator, wherein the seventh resistor is a photoresistor; The first end of the seventh resistor is connected to the power supply, the second end of the seventh resistor is connected to the positive input of the second comparator, the inverted input of the second comparator is connected to the second reference power supply, and the output of the second comparator is connected to the power detection unit.

[0012] Optionally, the light intensity detection unit further includes: an eighth resistor, a ninth resistor, and a first capacitor; The first end of the eighth resistor is connected to the power supply, the second end of the eighth resistor is connected to the first end of the ninth resistor, the first end of the seventh resistor and the first end of the first capacitor, and the second end of the ninth resistor and the second end of the first capacitor are grounded.

[0013] In addition, to achieve the above objectives, the present invention also proposes a landscape street light, which includes the wind-solar hybrid power system described in any of the above claims.

[0014] This invention discloses a wind-solar hybrid power system, comprising: a voltage detection unit, a power controller, and a power detection unit; wherein the voltage detection unit is connected to an energy storage power source and the power controller, and the power controller is connected to the power detection unit, the energy storage power source, a street lighting component, a photovoltaic component, and a wind power generation component; the voltage detection unit is used to detect the port voltage of the energy storage power source, and when the port voltage value is lower than a preset voltage threshold, outputs a first conduction signal to the power controller; the power controller is used to conduct the power supply connection between the photovoltaic component and the street lighting component when receiving the first conduction signal; the power detection unit is used to detect the discharge power of the photovoltaic component and obtain the target power consumption of the street lighting component, calculate the power difference between the discharge power and the target power consumption, and output an electrical signal corresponding to the power difference to the power controller; The power controller is further configured to, when the power difference is negative, connect the power supply between the wind turbine and the streetlight lighting assembly, so that the wind turbine outputs power with a discharge power lower than the target power consumption. This system, through the complementarity of photovoltaic and wind power generation, combined with energy storage and intelligent control, effectively improves the power supply stability of landscape streetlights, overcomes the limitations of single photovoltaic power generation, and achieves efficient utilization of green energy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the first embodiment of the wind-solar hybrid power system of the present invention; Figure 2 This is a schematic diagram of the second embodiment of the wind-solar hybrid power system of the present invention.

[0016] Explanation of icon numbers:

[0017] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0019] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0020] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0021] This invention provides a wind-solar hybrid power system, referring to... Figure 1 As shown, Figure 1 This is a structural block diagram of the first embodiment of the wind-solar hybrid power system of the present invention. The wind-solar hybrid power system of the present invention includes: a voltage detection unit 10, a power controller 20, and a power detection unit 30; The voltage detection unit 10 is connected to the energy storage power supply and the power controller 20, respectively. The power controller 20 is connected to the power detection unit 30, the energy storage power supply, the street lighting component, the photovoltaic component, and the wind power generation component.

[0022] It should be understood that the street lighting component is the system load, used to provide lighting services at night or under low light conditions. It may include LED streetlights, control circuitry, and power interfaces. The street lighting component is connected to the power controller 20, receiving electrical energy from photovoltaic (PV) modules, wind turbines, the power grid, or energy storage. The power controller 20 adjusts the supply voltage and current of the street lighting component according to the system's power supply strategy to ensure stable operation. The photovoltaic (PV) module is the solar power generation component of the system, used to convert solar energy into electrical energy. It typically includes solar panels, a photovoltaic controller, and connection circuitry. The PV module is connected to the power controller 20, transmitting the converted electrical energy to the power controller 20. The power controller 20 adjusts the output power of the PV module according to light intensity and system requirements, and distributes the electrical energy to the street lighting component or energy storage. The wind turbine is the wind power generation component of the system, used to convert wind energy into electrical energy. It may include a wind turbine, a controller, and connection circuitry. The wind turbine generator is connected to the power controller 20, which transmits the electrical energy converted from wind power to the power controller 20. The power controller 20 adjusts the output power of the wind turbine generator according to wind speed and system requirements, and distributes the electrical energy to street lighting components or energy storage power sources.

[0023] It should be noted that the voltage detection unit 10 is used to monitor the port voltage of the energy storage power supply in real time and determine whether it is lower than a preset voltage threshold. When the voltage is insufficient, the power controller 20 is triggered to switch the power supply mode to ensure stable system operation. The port voltage of the energy storage power supply is collected by a voltage sensor (such as a voltage divider circuit or a dedicated voltage detection chip) and the signal is transmitted to a comparator circuit or microcontroller. When the voltage is detected to be lower than the preset threshold, a first conduction signal is output to the power controller 20, triggering the power supply connection between the photovoltaic module and the street lighting module. The voltage detection unit 10 can monitor the status of the energy storage power supply in real time, avoiding street light power outages due to insufficient voltage and improving the reliability of the system power supply.

[0024] In a wind-solar hybrid power system, the preset voltage threshold is a critical value for the port voltage of the energy storage power source (such as a battery), used to determine whether the energy storage power source has sufficient power. When the port voltage of the energy storage power source is lower than this preset value, the system considers the energy storage power source to be insufficient. When the port voltage is lower than the preset threshold, the voltage detection unit 10 outputs a signal to the power controller 20, triggering the photovoltaic modules or wind power generation modules to directly power the streetlights, reducing reliance on the energy storage power source.

[0025] The power controller 20 is the core management unit of the system. It is responsible for dynamically adjusting the power supply connection between the photovoltaic modules, wind power generation modules, and street lighting modules based on the input signals from the voltage detection unit 10 and the power detection unit 30, thereby achieving efficient power distribution and complementarity. Specifically, the power controller 20 can use a microcontroller or programmable logic controller as the main control chip. It receives signals from the voltage detection unit 10 and the power detection unit 30 and controls the on / off connection between the photovoltaic modules, wind power generation modules, and street lighting modules through relays or MOSFET switching circuits. For example, when the photovoltaic power generation is insufficient, the wind power generation modules are used to supplement the power supply. The power controller 20 can achieve intelligent complementarity between photovoltaic and wind power generation, optimize power distribution, and improve the system's power supply stability and energy utilization efficiency. In the wind-solar hybrid power system, the first turn-on signal is a control signal sent by the voltage detection unit 10 to the power controller 20 when it detects that the port voltage of the energy storage power source is lower than a preset voltage threshold. This signal triggers the power controller 20 to turn on the power supply connection between the photovoltaic modules and the street lighting modules, thereby reducing dependence on the energy storage power source and ensuring continuous power supply to the streetlights.

[0026] The power detection unit 30 is used to monitor the discharge power of the photovoltaic module and the target power consumption of the street lighting module in real time, calculate the power difference between the two, and provide a decision basis for the power controller 20. Specifically, the power detection unit 30 can collect the output current and voltage of the photovoltaic module through a current sensor (such as a Hall sensor) and a voltage sensor, respectively, and calculate its discharge power. At the same time, it obtains the target power consumption of the street lighting module (which can be preset or measured in real time). The power difference is converted into an electrical signal and transmitted to the power controller 20. The power detection unit 30 can accurately monitor the matching between photovoltaic power generation and load demand, and promptly trigger wind power generation to supplement power supply, avoiding insufficient or wasted power.

[0027] It should be understood that the electrical signal corresponding to the power difference refers to an electrical signal generated by the power detection unit 30 by calculating the difference between the discharge power of the photovoltaic module and the target power consumption of the street lighting module. This signal is used to notify the power controller 20 whether the current photovoltaic power generation meets the load demand, thereby triggering the corresponding control strategy. This electrical signal can be an analog signal; for example, the power difference can be linearly converted to a voltage signal (such as 0-5V), where 0V represents the minimum power difference and 5V represents the maximum power difference. The target power consumption can refer to the power value required by the street lighting module under normal operating conditions, or it can be the power value required by the street lighting module due to environmental changes.

[0028] This embodiment discloses a wind-solar hybrid power system, comprising: a voltage detection unit 10, a power controller 20, and a power detection unit 30; wherein, the voltage detection unit 10 is connected to an energy storage power source and the power controller 20, and the power controller 20 is connected to the power detection unit 30, the energy storage power source, a street lighting component, a photovoltaic component, and a wind power generation component; the voltage detection unit 10 is used to detect the port voltage of the energy storage power source, and when the port voltage value is lower than a preset voltage threshold, outputs a first conduction signal to the power controller 20; the power controller 20 is used to conduct the power supply connection between the photovoltaic component and the street lighting component when receiving the first conduction signal; the power detection unit 30 is used to detect the discharge power of the photovoltaic component and obtain the target power consumption of the street lighting component, calculate the power difference between the discharge power and the target power consumption, and output an electrical signal corresponding to the power difference to the power controller 20; The power controller 20 is further configured to, when the power difference is negative, connect the power supply between the wind power generation component and the street lighting component, so that the wind power generation component outputs electrical energy with a discharge power lower than the target power consumption for power supply. This system, through the complementarity of photovoltaic and wind power generation, combined with energy storage and intelligent control, effectively improves the power supply stability of landscape streetlights, overcomes the limitations of single photovoltaic power generation, and achieves efficient utilization of green energy.

[0029] Furthermore, the system also includes: a light intensity detection unit 40; The light intensity detection unit 40 is connected to the power detection unit 30; The light intensity detection unit 40 is used to detect the light intensity of the street light environment, and when the light intensity is lower than the preset light intensity threshold, it outputs the light intensity electrical signal corresponding to the light intensity to the power detection unit 30. The power detection unit 30 is used to determine the target power consumption of the street light lighting component based on the voltage value of the light intensity electrical signal. The lower the voltage value of the light intensity electrical signal, the higher the target power consumption of the street light lighting component.

[0030] It should be noted that, in this embodiment, the collaborative operation of the light intensity detection unit 40 and the power detection unit 30 further optimizes the system's power supply strategy. By detecting the illuminance of the streetlight environment, the system can dynamically adjust the target power consumption of the streetlight lighting components according to the actual lighting conditions, thereby achieving more intelligent energy management and energy-saving control. Specifically, the light intensity detection unit 40 is used to detect the illuminance of the streetlight environment in real time (such as during the day, dusk, or night). When the illuminance is lower than a preset light intensity threshold, the light intensity detection unit 40 outputs a light intensity electrical signal corresponding to the illuminance to the power detection unit 30.

[0031] The preset light intensity threshold is a critical value used to determine whether street lighting needs to be turned on. For example, the preset light intensity threshold can be set to 100 lux. When the ambient light intensity is below 100 lux, the system considers that street lighting needs to be turned on. The light intensity electrical signal refers to the conversion of the detected light intensity into an electrical signal (such as a voltage value) by the light intensity detection unit 40. Generally, the lower the light intensity, the lower the voltage value of the light intensity electrical signal.

[0032] The power detection unit 30 dynamically determines the target power consumption of the street light lighting components based on the voltage value of the received light intensity signal. A lower voltage value indicates lower ambient light intensity, and a higher target power consumption for the street light lighting components. For example, in complete darkness, the voltage value of the light intensity signal may be 0V, at which point the target power consumption is at its maximum (e.g., the rated power of the street light); at dusk, the voltage value may be 2V, at which point the target power consumption can be 50% of the rated power. Based on the target power consumption, the power detection unit 30 works in conjunction with the power controller 20 to dynamically adjust the power supply ratio of the photovoltaic modules, wind power generation modules, and energy storage power source, ensuring a stable power supply to the street light while conserving energy. When ambient light is relatively abundant, the power consumption of the street light lighting components can be appropriately reduced.

[0033] For example, assuming a preset light intensity threshold of 100 lux and a street light lighting component rated power of 100W. During the day, the ambient light intensity is 500 lux, higher than the preset threshold. The light intensity detection unit 40 does not output a light intensity signal, the street light lighting component is off, and the target power consumption is 0W. At dusk, the ambient light intensity is 50 lux, lower than the preset threshold. The light intensity detection unit 40 outputs a light intensity signal (e.g., 2V), and the power detection unit 30 determines the target power consumption to be 50W based on this signal. At night, the ambient light intensity is 0 lux, the light intensity detection unit 40 outputs a light intensity signal (e.g., 0V), and the power detection unit 30 determines the target power consumption to be 100W. By introducing the light intensity detection unit 40, the system can dynamically adjust the target power consumption of the street light lighting component according to the ambient light intensity, achieving a more intelligent power supply strategy. This not only improves energy utilization efficiency but also enhances the system's adaptability and energy-saving effect.

[0034] Furthermore, the power controller 20 is also used to connect the power supply connection between the photovoltaic module and the street lighting module and the power supply connection between the wind power generation module and the street lighting module when the power difference is positive, so that the photovoltaic module outputs electrical energy with a discharge power exceeding the target power consumption and the wind power generation module outputs electrical energy to the energy storage power source for storage.

[0035] It should be noted that in the wind-solar hybrid power system, when the power difference is positive (i.e., the discharge power of the photovoltaic modules is sufficient to meet the target power consumption of the street lighting modules), the power controller 20 will simultaneously connect the power supply between the photovoltaic modules and the street lighting modules, as well as the power supply between the wind power generation modules and the street lighting modules. Furthermore, the system will store excess electrical energy output from the photovoltaic and wind power generation modules in an energy storage power source to achieve efficient energy utilization and balance.

[0036] It should be understood that a positive power difference indicates that the discharge power of the photovoltaic module is less than the target power consumption of the street lighting module, meaning that photovoltaic power generation is insufficient to meet the load demand. The power controller 20 establishes the power supply connection between the photovoltaic module and the street lighting module: ensuring that the photovoltaic module can directly supply power to the street lighting module, fully utilizing photovoltaic power generation; establishing the power supply connection between the wind power generation module and the street lighting module; and enabling the wind power generation module to supplement power supply, compensating for the insufficient photovoltaic power generation. If the total output power of the photovoltaic module and the wind power generation module exceeds the target power consumption of the street lighting module, the excess energy is stored in an energy storage power source. In specific implementations, the on / off state between the photovoltaic module, the wind power generation module, and the street lighting module is controlled by a relay or MOSFET switching circuit. The power controller 20 drives the corresponding switching action based on the power difference signal. Alternatively, in a microcontroller-based system, the power controller 20 determines the power difference through program logic and executes the corresponding on / off power connection operation. When the power difference is positive, the power controller 20 ensures a stable power supply to the load by simultaneously activating the power supply connections between the photovoltaic modules, wind power generation modules, and street lighting modules. At the same time, the system stores excess electrical energy in an energy storage power source, achieving efficient energy utilization and complementarity. This not only improves the system's power supply reliability but also enhances energy sustainability and economy.

[0037] Furthermore, the power controller 20 is also configured to, when the power difference is positive, adjust the sum of the power difference and the power output of the wind power generation component to the preset maximum charging power of the energy storage power supply if the sum of the power difference and the power output of the wind power generation component is greater than the preset maximum charging power of the energy storage power supply.

[0038] It should be noted that when the power difference is positive, it indicates that the power generation of the photovoltaic modules exceeds the power consumption of the street lighting modules. In this case, the excess power generated by the photovoltaic modules and the wind power generation need to be stored. However, if the sum of the excess power generated by the photovoltaic modules and the wind power generation exceeds the preset maximum charging power of the energy storage power supply, the energy storage power supply will be damaged if the excess power generated by the photovoltaic modules and the wind power generation are not limited or adjusted. In this case, the power controller 20 dynamically adjusts the output power of the photovoltaic modules and the wind power generation modules to ensure that the total power input to the energy storage power supply does not exceed its safe charging capacity. This not only protects the safety and lifespan of the energy storage power supply but also optimizes the energy utilization efficiency of the system, achieving efficient operation of the wind-solar hybrid power system.

[0039] Furthermore, the power detection unit 30 is also used to detect the discharge power of the wind power generation component, determine the total discharge power of the wind power generation component and the photovoltaic component in combination with the discharge power of the photovoltaic component, and output a second conduction signal to the power controller 20 when the power difference between the total discharge power and the target power consumption of the street lighting component is negative. The power controller 20 is also connected to the power grid. When it receives the second conduction signal, it conducts the power supply connection between the power grid and the street light lighting component so that the power grid supplies power to the street light lighting component.

[0040] It should be noted that in this embodiment, when the total discharge power of the photovoltaic and wind power generation modules is insufficient to meet the target power consumption of the street lighting modules, the system will supplement the insufficient power through grid power supply to ensure the stable operation of the street lighting modules. Specifically, the second activation signal refers to a control signal generated and sent to the power controller 20 when the power detection unit 30 detects that the total discharge power of the photovoltaic and wind power generation modules is insufficient to meet the target power consumption of the street lighting modules in the wind-solar hybrid power system. This signal instructs the power controller 20 to activate the power supply connection between the grid and the street lighting modules, enabling the grid to supplement the insufficient power and ensure a stable power supply to the street lighting modules.

[0041] Reference Figure 2 , Figure 2 This is a schematic diagram of the second embodiment of the wind-solar hybrid power system of the present invention; based on the first embodiment described above, a second embodiment of the wind-solar hybrid power system of the present invention is proposed.

[0042] Furthermore, in this embodiment, the power controller 20 includes: a control chip U1, first to third power regulation circuits, first to fourth switching transistors, and first to fourth resistors; In this circuit, the first input terminal IN1 of the control chip U1 is connected to the power detection unit 30; the second input terminal IN2 of the control chip U1 is connected to the voltage detection unit 10; the first output terminal OUT1 of the control chip U1 is connected to the control terminal of the first switching transistor Q1; the second output terminal OUT2 of the control chip U1 is connected to the control terminal of the second switching transistor Q2; the third output terminal OUT3 of the control chip U1 is connected to the control terminal of the third switching transistor Q3; and the fourth output terminal OUT4 of the control chip U1 is connected to the control terminal of the fourth switching transistor Q4. The input terminal of the first switching transistor Q1 is connected to the first power adjustment circuit 201; the output terminal of the first switching transistor Q1 is connected to the first terminal of the first resistor R1; the second terminal of the first resistor R1 is connected to the street light lighting assembly; and the input terminal of the second switching transistor Q2 is connected to the second power adjustment circuit 201. The circuit is configured as follows: The output terminal of the second switch Q2 is connected to the first terminal of the second resistor R2, and the second terminal of the second resistor R2 is connected to the street light lighting assembly. The input terminal of the third switch Q3 is connected to the first power regulation circuit 201 and the second power regulation circuit 202. The output terminal of the third switch Q3 is connected to the first terminal of the third resistor R3, and the second terminal of the third resistor R3 is connected to the energy storage power supply. The input terminal of the fourth switch Q4 is connected to the third power regulation circuit 203. The output terminal of the fourth switch Q4 is connected to the first terminal of the fourth resistor R4, and the second terminal of the fourth resistor R4 is connected to the street light lighting assembly. The first power regulation circuit 201 is connected to the photovoltaic module, the second power regulation circuit 202 is connected to the wind power generation assembly, and the third power regulation circuit 203 is connected to the power grid. The first power regulation circuit 201 is used to regulate the output power of the photovoltaic module, the second power regulation circuit 202 is used to regulate the output power of the wind power generation module, and the third power regulation circuit 203 is used to regulate the output power of the power grid.

[0043] It should be noted that, in this embodiment, the power controller 20, through devices such as the control chip U1, power regulation circuit, switching transistors, and resistors, realizes power regulation and distribution for photovoltaic modules, wind power generation modules, the power grid, and energy storage power supply, ensuring a stable power supply for the street lighting modules. The control chip U1 is the core of the power controller 20, responsible for receiving signals from the power detection unit 30 and the voltage detection unit 10, and controlling the on / off state of each switching transistor based on these signals, thereby regulating the output power of the photovoltaic modules, wind power generation modules, and the power grid. The first input terminal IN1 of the control chip U1 is connected to the power detection unit 30 to receive the power difference signal. The second input terminal IN2 of the control chip U1 is connected to the voltage detection unit 10 to receive the voltage status signal.

[0044] The first to fourth output terminals OUT4 of the control chip U1 are connected to the control terminals of the first to fourth switching transistors Q4, respectively, to output control signals. The power regulation circuit is used to regulate the output power of the photovoltaic modules, wind power generation modules, and the power grid, ensuring that their output power meets system requirements and protecting the energy storage power supply and street lighting components. The first power regulation circuit 201 is connected to the photovoltaic modules to regulate their output power. The second power regulation circuit 202 is connected to the wind power generation modules to regulate their output power. The third power regulation circuit 203 is connected to the power grid to regulate its output power. When the output power of the photovoltaic modules or wind power generation modules is too high, their output power is reduced to protect the energy storage power supply. When the power grid needs supplemental power, its output power is adjusted to meet the needs of the street lighting components. The switching transistors are used to control the on / off state of the circuit, turning on or off according to the signals from the control chip U1, thereby regulating the flow of electrical energy between the photovoltaic modules, wind power generation modules, and the power grid. The first switching transistor Q1 controls the power supply connection between the photovoltaic modules and the street lighting components. The second switching transistor Q2 controls the power supply connection between the wind power generation modules and the street lighting components. The third switch Q3 controls the power supply connection between the photovoltaic and wind power generation modules and the energy storage power source. The fourth switch Q4 controls the power supply connection between the grid and the street lighting module. The input terminal is connected to the power regulation circuit to receive regulated electrical energy. The output terminal is connected to a resistor to transfer electrical energy to the street lighting module or energy storage power source. The control terminal is connected to the control chip U1 to receive control signals. The resistor is used for current limiting and voltage division to protect other components in the circuit (such as the street lighting module and energy storage power source) from damage due to excessive current or voltage. The first resistor R1 connects the first switch Q1 to the street lighting module, limiting the current supplied by the photovoltaic module. The second resistor R2 connects the second switch Q2 to the street lighting module, limiting the current supplied by the wind power generation module. The third resistor R3 connects the third switch Q3 to the energy storage power source, limiting the input current to the energy storage power source. The fourth resistor R4 connects the fourth switch Q4 to the street lighting module, limiting the current supplied by the grid. The first terminal is connected to the output terminal of the switch. The second terminal is connected to the street lighting module or energy storage power source.

[0045] Specifically, the power detection unit 30 detects the power difference between the photovoltaic module, the wind power generation module, and the street lighting module, and transmits the signal to the control chip U1. The voltage detection unit 10 detects the voltage state of the energy storage power supply and transmits the signal to the control chip U1. Based on the power difference and voltage state, the control chip U1 determines whether to adjust the output power of the photovoltaic module, the wind power generation module, or the grid, and outputs corresponding control signals to the switching transistors. The switching transistors turn on or off according to the control signals, adjusting the flow of electrical energy to the street lighting module or the energy storage power supply. The power regulation circuit adjusts the output power of the photovoltaic module, the wind power generation module, and the grid. The resistor limits the current, protecting the street lighting module and the energy storage power supply. When the photovoltaic module is supplying power, the control chip U1 outputs a signal to turn on the first switching transistor Q1, and the electrical energy of the photovoltaic module is transferred to the street lighting module through the first power regulation circuit 201 and the first resistor R1. When the wind power generation module supplies power, the control chip U1 outputs a signal to turn on the second switch Q2, and the electrical energy from the wind power generation module is transferred to the street lighting module through the second power regulation circuit 202 and the second resistor R2. When the energy storage power supply is charging, the control chip U1 outputs a signal to turn on the third switch Q3, and the excess electrical energy from the photovoltaic module and the wind power generation module is transferred to the energy storage power supply through the third power regulation circuit 203 and the third resistor R3. When the grid supplies power, the control chip U1 outputs a signal to turn on the fourth switch Q4, and the electrical energy from the grid is transferred to the street lighting module through the third power regulation circuit 203 and the fourth resistor R4. The power controller 20, through the coordinated operation of the control chip U1, the power regulation circuit, the switches, and the resistors, realizes the power regulation and distribution of the photovoltaic module, the wind power generation module, the grid, and the energy storage power supply, ensuring a stable power supply to the street lighting module while protecting the safety of the energy storage power supply and other devices.

[0046] Furthermore, the voltage detection unit 10 includes: a fifth to a sixth resistor R6 and a first comparator A1; Specifically, the first end of the fifth resistor R5 is connected to the power port of the energy storage power supply, the second end of the fifth resistor R5 is connected to the positive input terminal of the first comparator A1, the inverting input terminal of the first comparator A1 is connected to the first reference power supply Vref1, the output terminal of the first comparator A1 is connected to the first end of the sixth resistor R6, and the second end of the sixth resistor R6 is connected to the second input terminal IN2 of the control chip U1.

[0047] It should be noted that the fifth resistor R5 is used for voltage division, proportionally reducing the voltage of the energy storage power supply so that the first comparator A1 can safely detect the voltage signal. The first end of the fifth resistor R5 is connected to the power port of the energy storage power supply to receive its voltage signal, and the second end is connected to the positive input of the first comparator A1 to transmit the divided voltage signal to the first comparator A1. The first comparator A1 compares the actual voltage of the energy storage power supply with a reference voltage and outputs a signal based on the comparison result. The positive input of the first comparator A1 receives the divided voltage signal (the actual voltage of the energy storage power supply) from the fifth resistor R5. The inverting input of the first comparator A1 is connected to the first reference power supply Vref1 to receive the reference voltage signal. The output of the first comparator A1 outputs the comparison result signal. If the voltage at the positive input is greater than the voltage at the inverting input, a high-level signal is output, i.e., a first conduction signal is output to the power controller 20. If the voltage at the positive input is less than the voltage at the inverting input, a low-level signal is output. The sixth resistor R6 is used for current limiting, protecting the second input terminal IN2 of the control chip U1 from damage caused by excessive current. The first end of the sixth resistor R6 is connected to the output terminal of the first comparator A1 to receive the comparison result signal. The second end of the sixth resistor R6 is connected to the second input terminal IN2 of the control chip U1, transmitting the comparison result signal to the control chip U1. The first reference power supply Vref1 provides a reference voltage as the comparison reference value and is connected to the inverting input terminal of the first comparator A1, providing a reference voltage signal to the first comparator A1.

[0048] Furthermore, the light intensity detection unit 40 includes: a seventh resistor R7 and a second comparator A2, wherein the seventh resistor R7 is a photoresistor; The first end of the seventh resistor R7 is connected to the power supply V1, the second end of the seventh resistor R7 is connected to the positive input of the second comparator A2, the inverted input of the second comparator A2 is connected to the second reference power supply Vref2, and the output of the second comparator A2 is connected to the power detection unit 30.

[0049] It should be noted that the seventh resistor, R7, is a photoresistor, and its resistance changes with the ambient light intensity. When the light intensity is high, the photoresistor's resistance is low; when the light intensity is low, the photoresistor's resistance is high. The change in the photoresistor's resistance indirectly reflects the ambient light intensity. The second comparator A2 compares the voltage divider signal from the photoresistor with the reference voltage of the second reference power supply Vref2 and outputs a signal based on the comparison result. The positive input of the second comparator A2 receives the voltage divider signal from the photoresistor (reflecting the ambient light intensity). The inverting input of the second comparator A2 is connected to the second reference power supply Vref2 and receives the reference voltage signal. The output of the second comparator A2 outputs the comparison result signal. If the voltage at the positive input is greater than the voltage at the inverting input, a high-level signal is output. If the voltage at the positive input is less than the voltage at the inverting input, a low-level signal is output. When the light intensity is high, the photoresistor's resistance is low, the voltage divider signal is high, and the second comparator A2 outputs a high-level signal. When the light intensity is low, the resistance of the photoresistor is high, the voltage divider signal is low, and the second comparator A2 outputs a low-level signal. The second reference power supply Vref2 provides a reference voltage as a comparison benchmark. When the power detection unit 30 receives the low-level signal, it determines the target power consumption of the street light lighting component based on the voltage value of the light intensity electrical signal corresponding to the light intensity, thereby realizing the dynamic adjustment of the target power consumption of the street light lighting component according to the street light environmental conditions.

[0050] Furthermore, the light intensity detection unit 40 also includes: an eighth resistor R8, a ninth resistor R9, and a first capacitor C1; The first end of the eighth resistor R8 is connected to the power supply V1, the second end of the eighth resistor R8 is connected to the first end of the ninth resistor R9, the first end of the seventh resistor R7 and the first end of the first capacitor C1, and the second end of the ninth resistor R9 and the second end of the first capacitor C1 are grounded.

[0051] It should be noted that the eighth resistor R8 is connected in series with the photoresistor (seventh resistor R7) to form a voltage divider circuit, used to divide the voltage of the power supply V1 so that the second comparator A2 can safely detect changes in the resistance of the photoresistor. The ninth resistor R9 is connected in parallel with the first capacitor C1 to form a filter circuit, used to filter out high-frequency noise in the circuit, ensuring that the signal received by the second comparator A2 is stable and reliable. The first capacitor C1 and the ninth resistor R9 are connected in parallel to form a filter circuit, used to filter out high-frequency noise in the circuit, ensuring that the signal received by the second comparator A2 is stable and reliable.

[0052] To achieve the above objectives, the present invention also proposes a landscape street light, which includes the wind-solar hybrid power system as described above. The specific structure of this landscape street light is as described in the above embodiments. Since this landscape street light adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here.

[0053] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A wind-solar hybrid power system, characterized in that, The system includes: a voltage detection unit, a power controller, and a power detection unit; The voltage detection unit is connected to the energy storage power supply and the power controller, and the power controller is connected to the power detection unit, the energy storage power supply, the street lighting component, the photovoltaic component and the wind power generation component. The voltage detection unit is used to detect the port voltage of the energy storage power supply, and when the voltage value of the port voltage is lower than a preset voltage threshold, it outputs a first conduction signal to the power controller. The power controller is used to connect the power supply between the photovoltaic module and the street lighting module when the first conduction signal is received; The power detection unit is used to detect the discharge power of the photovoltaic module and obtain the target power consumption of the street lighting module, calculate the power difference between the discharge power and the target power consumption, and output the electrical signal corresponding to the power difference to the power controller. The power controller is also used to connect the power supply between the wind power generation component and the street lighting component when the power difference is negative, so that the wind power generation component outputs electrical energy with a discharge power lower than the target power consumption for power supply.

2. The wind-solar hybrid power system as described in claim 1, characterized in that, The system also includes: a light intensity detection unit; The light intensity detection unit is connected to the power detection unit; The light intensity detection unit is used to detect the light intensity of the street light environment, and when the light intensity is lower than a preset light intensity threshold, it outputs a light intensity electrical signal corresponding to the light intensity to the power detection unit. The power detection unit is used to determine the target power consumption of the street light lighting component based on the voltage value of the light intensity electrical signal. The lower the voltage value of the light intensity electrical signal, the higher the target power consumption of the street light lighting component.

3. The wind-solar hybrid power system as described in claim 1, characterized in that, The power controller is further configured to, when the power difference is positive, connect the power supply between the photovoltaic module and the street lighting module and the power supply between the wind power generation module and the street lighting module, so that the photovoltaic module outputs electrical energy exceeding the target power consumption and the wind power generation module outputs electrical energy to the energy storage power source for storage.

4. The wind-solar hybrid power system as described in claim 3, characterized in that, The power controller is further configured to, when the power difference is positive, adjust the sum of the power difference and the power output of the wind power generation component to the preset maximum charging power of the energy storage power supply if the sum of the power difference and the power output of the wind power generation component is greater than the preset maximum charging power of the energy storage power supply.

5. The wind-solar hybrid power system as described in claim 4, characterized in that, The power detection unit is also used to detect the discharge power of the wind power generation module, determine the total discharge power of the wind power generation module and the photovoltaic module in combination with the discharge power of the photovoltaic module, and output a second conduction signal to the power controller when the power difference between the total discharge power and the target power consumption of the street lighting module is negative. The power controller is also connected to the power grid. When it receives the second conduction signal, it conducts the power supply connection between the power grid and the street light lighting component so that the power grid supplies power to the street light lighting component.

6. The wind-solar hybrid power system as described in claim 5, characterized in that, The power controller includes: a control chip, first to third power regulation circuits, first to fourth switching transistors, and first to fourth resistors; The control chip has the following configuration: a first input terminal connected to the power detection unit; a second input terminal connected to the voltage detection unit; a first output terminal connected to the control terminal of the first switching transistor; a second output terminal connected to the control terminal of the second switching transistor; a third output terminal connected to the control terminal of the third switching transistor; a fourth output terminal connected to the control terminal of the fourth switching transistor; an input terminal of the first switching transistor connected to the first power adjustment circuit; an output terminal of the first switching transistor connected to the first terminal of the first resistor; a second terminal of the first resistor connected to the street light lighting assembly; and an input terminal of the second switching transistor connected to the second power adjustment circuit. The output terminal of the third switching transistor is connected to the first terminal of the second resistor, the second terminal of the second resistor is connected to the street lighting assembly, the input terminal of the third switching transistor is connected to the first power regulation circuit and the second power regulation circuit, the output terminal of the third switching transistor is connected to the first terminal of the third resistor, the second terminal of the third resistor is connected to the energy storage power supply, the input terminal of the fourth switching transistor is connected to the third power regulation circuit, the output terminal of the fourth switching transistor is connected to the first terminal of the fourth resistor, the second terminal of the fourth resistor is connected to the street lighting assembly, the first power regulation circuit is connected to the photovoltaic assembly, the second power regulation circuit is connected to the wind power generation assembly, and the third power regulation circuit is connected to the power grid. The first power regulation circuit is used to regulate the output power of the photovoltaic module, the second power regulation circuit is used to regulate the output power of the wind power generation module, and the third power regulation circuit is used to regulate the output power of the power grid.

7. The wind-solar hybrid power system as described in claim 6, characterized in that, The voltage detection unit includes: a fifth and a sixth resistor and a first comparator; The first end of the fifth resistor is connected to the power port of the energy storage power supply, the second end of the fifth resistor is connected to the positive input terminal of the first comparator, the negative input terminal of the first comparator is connected to the first reference power supply, the output terminal of the first comparator is connected to the first end of the sixth resistor, and the second end of the sixth resistor is connected to the second input terminal of the control chip.

8. The wind-solar hybrid power system as described in claim 2, characterized in that, The light intensity detection unit includes a seventh resistor and a second comparator, wherein the seventh resistor is a photoresistor; The first end of the seventh resistor is connected to the power supply, the second end of the seventh resistor is connected to the positive input of the second comparator, the inverted input of the second comparator is connected to the second reference power supply, and the output of the second comparator is connected to the power detection unit.

9. The wind-solar hybrid power system as described in claim 8, characterized in that, The light intensity detection unit also includes: an eighth resistor, a ninth resistor, and a first capacitor; The first end of the eighth resistor is connected to the power supply, the second end of the eighth resistor is connected to the first end of the ninth resistor, the first end of the seventh resistor and the first end of the first capacitor, and the second end of the ninth resistor and the second end of the first capacitor are grounded.

10. A landscape street light, characterized in that, The landscape street light includes the wind-solar hybrid power system as described in any one of claims 1-9.

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