Power constant value output module for photovoltaic power supply

Abstract

The utility model relates to the technical field of photovoltaic power supply, in particular to a power constant value output module for photovoltaic power supply, which comprises a direct current storage assembly, a direct current-alternating current conversion assembly and a constant value adjusting unit, the constant value adjusting unit comprises a voltage adjusting assembly and a constant output assembly, the direct current storage assembly is connected with the direct current-alternating current conversion assembly, and the constant output assembly is connected with the direct current-alternating current conversion assembly. The DC-AC conversion assembly is connected with the voltage adjusting assembly, and the voltage adjusting assembly is connected with the constant output assembly. According to the utility model, the unstable direct current output by the temporary storage photovoltaic module is received through the direct current storage assembly, the direct current is converted into the alternating current through the direct current-alternating current conversion assembly, and then the voltage of the alternating current is stabilized through the constant value adjusting unit, adjusted to the working voltage of the household electrical appliance and output. Therefore, normal operation of the household electrical appliance can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic power supply, in particular to a power constant value output module for photovoltaic power supply. Background Art

[0002] Photovoltaic power generation is a technology that uses the photovoltaic effect of semiconductor interfaces to directly convert light energy into electrical energy. Photovoltaic power generation can provide electricity for households, increase the proportion of clean energy in electricity supply, reduce dependence on traditional power grids, and reduce energy costs.

[0003] For example, CN213243906U involves a photovoltaic intelligent power supply module, including a base, a mounting seat is provided on the upper surface of the base, the mounting seat is U-shaped, a rotating shaft is installed and connected on the mounting seat, a first connecting block is fixedly installed on the rotating shaft, a first bevel gear is provided at the right end of the rotating shaft, a second bevel gear is meshed and connected at the lower side of the first bevel gear, the lower end of the second bevel gear is connected to the output end of the first motor, the first motor is fixedly installed on the right side of the mounting seat, a support plate is provided on the upper surface of the first connecting block, two fixed seats are provided on the upper surface of the support plate, a second connecting block is rotatably connected between the two fixed seats, and a rotating mechanism is provided on the support plate. The power supply module can ensure that the transparent glass plate is always facing the sun, enhances the energy storage effect of the perovskite solar cell, and thereby improves the working efficiency of the solar cell. However, the problem is that as the light intensity changes, the DC voltage output by the power supply module will also change. For household appliances with a constant working voltage, using the power output by the power supply module will cause unstable operation of the household appliances.

[0004] In order to avoid the output voltage change caused by the change of light intensity and affect the normal operation of household appliances, a power constant output module for photovoltaic power supply is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a power constant output module for photovoltaic power supply to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides a power constant value output module for photovoltaic power supply, comprising a DC storage component, a DC-AC conversion component and a constant value adjustment unit, wherein the constant value adjustment unit comprises a voltage adjustment component and a constant output component, wherein the DC storage component is connected to the DC-AC conversion component, the DC-AC conversion component is connected to the voltage adjustment component, and the voltage adjustment component is connected to the constant output component;

[0007] The DC storage component is used to receive and temporarily store the DC power output by the photovoltaic module, and the DC-AC conversion component is used to convert the DC power temporarily stored by the DC storage component into AC power, and after the voltage of the AC power is adjusted and stabilized by the voltage regulation component, it is converted and output by the constant output component to supply power for household appliances.

[0008] As a further improvement of the technical solution, the DC storage assembly includes a multi-core DC cable, a DC combiner box and an energy storage battery. The DC combiner box is connected to the photovoltaic module and the energy storage battery through the multi-core DC cable.

[0009] As a further improvement of the technical solution, the DC-AC conversion component includes a single-phase inverter, the input end of the single-phase inverter is connected to the energy storage battery, and the output end of the single-phase inverter is connected to an AC voltage stabilizing circuit.

[0010] As a further improvement of the technical solution, the voltage regulating component includes a voltage regulating circuit, and the voltage regulating circuit includes bidirectional thyristors SCR1 and SCR2, wherein:

[0011] One end of the bidirectional thyristor SCR1 is connected to the bidirectional thyristor SCR2, the capacitor C1 and the AC voltage stabilizing circuit, and the other end of the bidirectional thyristor SCR1 is connected to the potentiometer VR1;

[0012] The bidirectional thyristor SCR2 is connected to the resistor R2, the resistor R2 is connected to the resistor R1 and connected to the other end of the capacitor C1, and the resistor R1 is connected to the other end of the potentiometer VR1.

[0013] As a further improvement of the technical solution, the constant output component includes a stable output circuit, and the stable output circuit includes diodes D1, D2, D3, D4, and D5, wherein:

[0014] The cathode of the diode D1 is connected to the cathode of the diode D2, the anode of the diode D5 is connected in parallel to the resistor R3, and the anode of the diode D1 is connected to the cathode of the diode D3;

[0015] The anode of the diode D2 is connected to the cathode of the diode D4 and connected to the load, the anode of the diode D4 is connected to the anode of the diode D3, the cathode of the diode D5 and connected to the capacitor C2, and the capacitor C2 is connected to the other end of the resistor R3 and connected to the cathode of the diode D5.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] In the power constant output module for photovoltaic power supply, unstable direct current output by the photovoltaic module is received and temporarily stored through a direct current storage component, the direct current is converted into alternating current through a direct-to-alternating conversion component, and then the voltage of the alternating current is stabilized and adjusted to the working voltage of household appliances through a constant value adjustment unit before output, thereby ensuring the normal operation of the household appliances. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is the circuit diagram of the fixed value adjustment unit of the utility model. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] Example

[0023] See also Figure 1-Figure 2 As shown, this embodiment provides a power constant output module for photovoltaic power supply, including a DC storage component, a DC-AC conversion component and a constant value adjustment unit, the constant value adjustment unit includes a voltage adjustment component and a constant output component, the DC storage component is connected to the DC-AC conversion component, the DC-AC conversion component is connected to the voltage adjustment component, and the voltage adjustment component is connected to the constant output component;

[0024] The DC storage component is used to receive and temporarily store the DC power output by the photovoltaic module. The DC-AC conversion component is used to convert the DC power temporarily stored in the DC storage component into AC power. After the voltage of the AC power is adjusted and stabilized by the voltage regulation component, it is converted and output by the constant output component to provide power for household appliances.

[0025] Principle: The DC storage component receives and temporarily stores the unstable DC power output by the photovoltaic module, converts the DC power into AC power through the DC-AC conversion component, and then stabilizes the voltage of the AC power through the constant value adjustment unit and adjusts it to the working voltage of household appliances before outputting it.

[0026] Furthermore, the DC storage component includes a multi-core DC cable, a DC combiner box and an energy storage battery. The DC combiner box is connected to the photovoltaic module and the energy storage battery through the multi-core DC cable. The unstable DC power produced by the photovoltaic module is transmitted to the DC combiner box through the multi-core DC cable, and the DC combiner box then sends the collected DC power to the energy storage battery for temporary storage.

[0027] Furthermore, the DC-AC conversion component includes a single-phase inverter, the input end of the single-phase inverter is connected to an energy storage battery, and the output end of the single-phase inverter is connected to an AC voltage stabilizing circuit. The DC power temporarily stored in the energy storage battery is converted into AC power by the single-phase inverter, and then the AC voltage stabilizing circuit outputs an AC power supply with a relatively stable voltage.

[0028] The voltage regulating component includes a voltage regulating circuit, and the voltage regulating circuit includes bidirectional thyristors SCR1 and SCR2, wherein:

[0029] One end of the bidirectional thyristor SCR1 is connected to the bidirectional thyristor SCR2 and the capacitor C1 and connected to the AC voltage stabilizing circuit, and the other end of the bidirectional thyristor SCR1 is connected to the potentiometer VR1;

[0030] The bidirectional thyristor SCR2 is connected to the resistor R2, the resistor R2 is connected to the resistor R1 and connected to the other end of the capacitor C1, and the resistor R1 is connected to the other end of the potentiometer VR1.

[0031] This circuit uses bidirectional thyristor SCR1 and utilizes the characteristics of RC charge and discharge circuit and bidirectional thyristor SCR2 to perform phase shift trigger control on the on and off of bidirectional thyristor SCR1, and adjust the output voltage of the AC voltage stabilizing circuit to the working voltage of household appliances.

[0032] The constant output component includes a stable output circuit, and the stable output circuit includes diodes D1, D2, D3, D4, and D5, wherein:

[0033] The cathode of diode D1 is connected to the cathode of diode D2, the anode of diode D5 is connected in parallel to resistor R3, and the anode of diode D1 is connected to the cathode of diode D3;

[0034] The anode of the diode D2 is connected to the cathode of the diode D4 and connected to the load, the anode of the diode D4 is connected to the anode of the diode D3, the cathode of the diode D5 is connected to the capacitor C2, and the capacitor C2 is connected to the other end of the resistor R3 and connected to the cathode of the diode D5.

[0035] The voltage output by the AC voltage stabilizing circuit is regulated and then continuously output by the stable output circuit for use by household appliances.

[0036] A power constant output module for photovoltaic power supply in this embodiment, when in use, the unstable DC power produced by the photovoltaic module is transmitted to the DC junction box through a multi-core DC cable, the DC power temporarily stored in the energy storage battery is converted into AC power by a single-phase inverter, and then the AC voltage stabilizing circuit outputs an AC power supply with a relatively stable voltage, and then the voltage regulating component regulates the voltage output by the AC voltage stabilizing circuit to the working voltage of household appliances, and finally outputs it through a stable output circuit.

[0037] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A power constant output module for photovoltaic power supply, characterized in that: It includes a DC storage component, a DC-AC conversion component and a fixed value adjustment unit, wherein the fixed value adjustment unit includes a voltage adjustment component and a constant output component, wherein the DC storage component is connected to the DC-AC conversion component, wherein the DC-AC conversion component is connected to the voltage adjustment component, and wherein the voltage adjustment component is connected to the constant output component; The DC storage component is used to receive and temporarily store the DC power output by the photovoltaic module, and the DC-AC conversion component is used to convert the DC power temporarily stored by the DC storage component into AC power, and after the voltage of the AC power is adjusted and stabilized by the voltage regulation component, it is converted and output by the constant output component to supply power for household appliances.

2. The photovoltaic power supply constant output module according to claim 1, characterized in that: The DC storage assembly includes a multi-core DC cable, a DC combiner box and an energy storage battery. The DC combiner box is connected to the photovoltaic module and the energy storage battery through the multi-core DC cable.

3. The photovoltaic power supply constant output module according to claim 2, characterized in that: The DC-AC conversion component includes a single-phase inverter, an input end of the single-phase inverter is connected to the energy storage battery, and an output end of the single-phase inverter is connected to an AC voltage stabilizing circuit.

4. The photovoltaic power supply constant output module according to claim 3, characterized in that: The voltage regulating component includes a voltage regulating circuit, and the voltage regulating circuit includes bidirectional thyristors SCR1 and SCR2, wherein: One end of the bidirectional thyristor SCR1 is connected to the bidirectional thyristor SCR2, the capacitor C1 and the AC voltage stabilizing circuit, and the other end of the bidirectional thyristor SCR1 is connected to the potentiometer VR1; The bidirectional thyristor SCR2 is connected to the resistor R2, the resistor R2 is connected to the resistor R1 and connected to the other end of the capacitor C1, and the resistor R1 is connected to the other end of the potentiometer VR1.

5. The photovoltaic power supply constant output module according to claim 4, characterized in that: The constant output component includes a stable output circuit, and the stable output circuit includes diodes D1, D2, D3, D4, and D5, wherein: The cathode of the diode D1 is connected to the cathode of the diode D2, the anode of the diode D5 is connected in parallel to the resistor R3, and the anode of the diode D1 is connected to the cathode of the diode D3; The anode of the diode D2 is connected to the cathode of the diode D4 and connected to the load, the anode of the diode D4 is connected to the anode of the diode D3, the cathode of the diode D5 and connected to the capacitor C2, and the capacitor C2 is connected to the other end of the resistor R3 and connected to the cathode of the diode D5.

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