Solar power generation energy storage power supply circuit

Abstract

The utility model discloses a solar power generation, energy storage and power supply circuit, which relates to the field of power supply and comprises a solar power supply module used for converting solar energy into electric energy and outputting the electric energy to a feedback voltage regulation module, a battery energy storage module and an under-voltage disconnection module; the feedback voltage regulation module is used for controlling the conduction condition of an MOS tube of the solar power supply module based on the magnitude of the output voltage of the solar power supply module, and constructing the voltage stabilization output of the solar power supply module; the battery energy storage module is used for a battery to store electric energy; the under-voltage disconnection module is used for disconnecting the power supply loop when the power supply for the electricity load is insufficient; compared with the prior art, the beneficial effects of the utility model are that the device is provided with the feedback voltage regulation module, detects the magnitude of the output voltage of the solar power supply module, carries out the feedback regulation, and constructs the voltage stabilization output, thereby guaranteeing the stability of the direct output voltage, and also guaranteeing the stability of the charging voltage of a battery.

Description

Technical Field

[0001] The utility model relates to the field of power supply, in particular to a solar power generation and energy storage power supply circuit. Background Art

[0002] Solar power generation is a technology that converts solar energy resources into electrical energy. It has the advantages of being renewable and clean, and is an important component of new energy.

[0003] Existing solar power generation and energy storage often directly power batteries. Due to different light intensities, the voltage and current output to the battery vary, affecting the battery life and requiring improvement. Utility Model Content

[0004] The purpose of the present invention is to provide a solar power generation and energy storage power supply circuit to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A solar power generation and energy storage power supply circuit, comprising:

[0007] Solar power supply module, used to convert solar energy into electrical energy and output it to the feedback voltage regulation module, battery energy storage module, and undervoltage disconnect module;

[0008] The feedback voltage regulation module is used to control the conduction status of the MOS tube of the solar power supply module based on the output voltage of the solar power supply module, thereby establishing a voltage-regulated output of the solar power supply module;

[0009] Battery energy storage module, used for storing electrical energy in batteries;

[0010] An undervoltage disconnect module is used to disconnect the power supply circuit when the power supply to the electrical load is insufficient;

[0011] The solar power supply module is connected to the feedback voltage regulation module, the battery energy storage module, and the undervoltage disconnect module.

[0012] As a further solution of the present utility model: the solar power supply module includes a solar panel X, a resistor R4, a capacitor C1, a diode D1, a resistor R1, a MOS transistor V1, and a diode D2. One end of the solar panel X is grounded, the other end of the solar panel X is connected to one end of the resistor R4, the other end of the resistor R4 is connected to one end of the capacitor C1 and the positive electrode of the diode D1, the other end of the capacitor C1 is grounded, the cathode of the diode D1 is connected to the D electrode of the MOS transistor V1 and one end of the resistor R1, the G electrode of the MOS transistor V1 is connected to the feedback voltage regulation module and the other end of the resistor R1, the S electrode of the MOS transistor V1 is connected to the positive electrode of the diode D2 and the feedback voltage regulation module, and the cathode of the diode D2 is connected to the battery energy storage module and the undervoltage disconnection module.

[0013] As a further solution of the present utility model: the feedback voltage regulation module includes a controllable precision voltage regulator Z1, a resistor R2, a capacitor C2, an amplifier U1, a diode D3, a diode D4, a potentiometer RP1, and a potentiometer RP2. The model of the controllable precision voltage regulator Z1 is TL431. The non-inverting end of the amplifier U1 is connected to one end of the resistor R2 and the solar power supply module, and the other end of the resistor R2 is grounded. The inverting end of the amplifier U1 is connected to one end of the capacitor C2, one end of the potentiometer RP1, and one end of the potentiometer RP2. The other end of the capacitor C2 is grounded, the other end of the potentiometer RP1 is connected to the cathode of the diode D3, the other end of the potentiometer RP2 is connected to the cathode of the diode D4, the positive pole of the diode D3 is connected to the positive pole of the diode D4, the output end of the amplifier U1, and the control pole of the controllable precision voltage regulator Z1. The positive pole of the controllable precision voltage regulator Z1 is connected to the G pole of the MOS tube V1, and the negative pole of the controllable precision voltage regulator Z1 is grounded.

[0014] As a further solution of the present invention: the battery energy storage module includes a battery E1, the positive electrode of the battery E1 is connected to the solar power supply module, and the negative electrode of the battery E1 is grounded.

[0015] As a further solution of the present utility model: the undervoltage disconnect module includes a diode D5, a resistor R3, a MOS tube V2, a capacitor C3, and a capacitor C4. The D pole of the MOS tube V2 is connected to the negative pole of the diode D5 and the solar power supply module, the positive pole of the diode D5 is connected to one end of the resistor R3, one end of the capacitor C3, and the G pole of the MOS tube V2, the other end of the resistor R3 is grounded, the other end of the capacitor C3 is grounded, the S pole of the MOS tube V2 is connected to one end of the capacitor C4 and the power load, and the other end of the capacitor C4 is grounded.

[0016] Compared with the existing technology, the beneficial effect of the present invention is: the present invention sets a feedback voltage regulation module to detect the output voltage of the solar power supply module and perform feedback regulation to construct a stable voltage output, which not only ensures the stability of the direct output voltage, but also ensures the stability of the battery charging voltage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of a solar power generation and energy storage power supply circuit.

[0018] Figure 2 This is the circuit diagram of the solar power supply module and the feedback voltage regulation module.

[0019] Figure 3 This is the pin diagram of the battery energy storage module and undervoltage disconnect module. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] See also Figure 1 , a solar power generation and energy storage power supply circuit, comprising:

[0022] Solar power supply module, used to convert solar energy into electrical energy and output it to the feedback voltage regulation module, battery energy storage module, and undervoltage disconnect module;

[0023] The feedback voltage regulation module is used to control the conduction status of the MOS tube of the solar power supply module based on the output voltage of the solar power supply module, thereby establishing a voltage-regulated output of the solar power supply module;

[0024] Battery energy storage module, used for storing electrical energy in batteries;

[0025] An undervoltage disconnect module is used to disconnect the power supply circuit when the power supply to the electrical load is insufficient;

[0026] The solar power supply module is connected to the feedback voltage regulation module, the battery energy storage module, and the undervoltage disconnect module.

[0027] In this example: See Figure 2 The solar power supply module includes a solar panel X, a resistor R4, a capacitor C1, a diode D1, a resistor R1, a MOS transistor V1, and a diode D2. One end of the solar panel X is grounded, the other end of the solar panel X is connected to one end of the resistor R4, the other end of the resistor R4 is connected to one end of the capacitor C1 and the positive electrode of the diode D1, the other end of the capacitor C1 is grounded, the cathode of the diode D1 is connected to the D electrode of the MOS transistor V1 and one end of the resistor R1, the G electrode of the MOS transistor V1 is connected to the feedback voltage regulation module and the other end of the resistor R1, the S electrode of the MOS transistor V1 is connected to the positive electrode of the diode D2 and the feedback voltage regulation module, and the cathode of the diode D2 is connected to the battery energy storage module and the undervoltage disconnection module.

[0028] Solar panel X converts solar energy into electrical energy, which is converted into a stable DC voltage after passing through resistor R4 and capacitor C1. Resistor R5 triggers MOS transistor V1 to conduct, and the voltage is output after passing through MOS transistor V1. It should be noted that the large resistance of resistor R1 causes the initial conduction degree of MOS transistor V1 to be low, thus avoiding the generation of excessive instantaneous current.

[0029] In this example: See Figure 2The feedback voltage regulation module includes a controllable precision voltage regulator Z1, a resistor R2, a capacitor C2, an amplifier U1, a diode D3, a diode D4, a potentiometer RP1, and a potentiometer RP2. The model of the controllable precision voltage regulator Z1 is TL431. The non-inverting end of the amplifier U1 is connected to one end of the resistor R2 and the solar power supply module, and the other end of the resistor R2 is grounded. The inverting end of the amplifier U1 is connected to one end of the capacitor C2, one end of the potentiometer RP1, and one end of the potentiometer RP2. The other end of the capacitor C2 is grounded, the other end of the potentiometer RP1 is connected to the cathode of the diode D3, the other end of the potentiometer RP2 is connected to the cathode of the diode D4, the anode of the diode D3 is connected to the anode of the diode D4, the output end of the amplifier U1, and the control electrode of the controllable precision voltage regulator Z1. The positive electrode of the controllable precision voltage regulator Z1 is connected to the G electrode of the MOS tube V1, and the negative electrode of the controllable precision voltage regulator Z1 is grounded.

[0030] The non-inverting terminal of amplifier U1 collects the output voltage of MOS transistor V1. This voltage is input to the non-inverting terminal of amplifier U1, causing amplifier U1 to output a high level. This voltage passes through diode D3 and potentiometer RP1 to charge capacitor C2. After capacitor C2 reaches a high level, amplifier U1 outputs a low level, discharging capacitor C2 through potentiometer RP2 and diode D4. This cycle repeats, forming a PWM signal. The greater the output voltage, the longer it takes capacitor C2 to charge (the power supply voltage remains unchanged, the non-inverting terminal voltage increases, the charging circuit impedance remains unchanged, and the charging time of capacitor C2 increases). The greater the duty cycle of the generated PWM signal, the more often the reference electrode of controllable precision voltage regulator Z1 is in a high voltage state, the more often the negative electrode of controllable precision voltage regulator Z1 is at a low level, and the conduction level of MOS transistor V1 decreases. Conversely, the smaller the output voltage of MOS transistor V1, the smaller the duty cycle of the PWM signal generated by amplifier U1, and the conduction level of MOS transistor V1 increases. This creates a regulated output voltage.

[0031] In this example: See Figure 3 The battery energy storage module includes a battery E1, the positive electrode of the battery E1 is connected to the solar power supply module, and the negative electrode of the battery E1 is grounded.

[0032] The battery E1 stores electric energy.

[0033] In this example: See Figure 3 The undervoltage disconnect module includes a diode D5, a resistor R3, a MOS transistor V2, a capacitor C3, and a capacitor C4. The D electrode of the MOS transistor V2 is connected to the cathode of the diode D5 and the solar power supply module. The anode of the diode D5 is connected to one end of the resistor R3, one end of the capacitor C3, and the G electrode of the MOS transistor V2. The other end of the resistor R3 is grounded, the other end of the capacitor C3 is grounded, the S electrode of the MOS transistor V2 is connected to one end of the capacitor C4 and the power load, and the other end of the capacitor C4 is grounded.

[0034] When the power supply is insufficient, the voltage regulator diode D5 cannot be turned on. After the capacitor C3 consumes the electric energy through the resistor R3, the G pole of the MOS tube V2 becomes a low level, and the MOS tube V2 is cut off and stops supplying power to the electrical load.

[0035] The working principle of the utility model is as follows: the solar power supply module is used to convert solar energy into electrical energy and output it to the feedback voltage regulation module, the battery energy storage module, and the undervoltage disconnection module; the feedback voltage regulation module is used to control the conduction status of the MOS tube of the solar power supply module based on the output voltage of the solar power supply module, thereby constructing a voltage-regulated output of the solar power supply module; the battery energy storage module is used to store electrical energy in the battery; and the undervoltage disconnection module is used to disconnect the power supply circuit when the power supply to the power load is insufficient.

[0036] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as exemplary and non-restrictive.

[0037] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A solar power generation and energy storage power supply circuit, characterized in that: The solar power generation and energy storage power supply circuit includes: Solar power supply module, used to convert solar energy into electrical energy and output it to the feedback voltage regulation module, battery energy storage module, and undervoltage disconnect module; The feedback voltage regulation module is used to control the conduction status of the MOS tube of the solar power supply module based on the output voltage of the solar power supply module, thereby establishing a voltage-regulated output of the solar power supply module; Battery energy storage module, used for battery storage of electrical energy; An undervoltage disconnect module is used to disconnect the power supply circuit when the power supply to the electrical load is insufficient; The solar power supply module is connected to the feedback voltage regulation module, the battery energy storage module, and the undervoltage disconnect module.

2. The solar power generation and energy storage power supply circuit according to claim 1, characterized in that: The solar power supply module includes a solar panel X, a resistor R4, a capacitor C1, a diode D1, a resistor R1, a MOS transistor V1, and a diode D2. One end of the solar panel X is grounded, the other end of the solar panel X is connected to one end of the resistor R4, the other end of the resistor R4 is connected to one end of the capacitor C1 and the positive electrode of the diode D1, the other end of the capacitor C1 is grounded, the negative electrode of the diode D1 is connected to the D electrode of the MOS transistor V1 and one end of the resistor R1, the G electrode of the MOS transistor V1 is connected to the feedback voltage regulation module and the other end of the resistor R1, the S electrode of the MOS transistor V1 is connected to the positive electrode of the diode D2 and the feedback voltage regulation module, and the negative electrode of the diode D2 is connected to the battery energy storage module and the undervoltage disconnect module.

3. The solar power generation and energy storage power supply circuit according to claim 2, characterized in that: The feedback voltage regulation module includes a controllable precision voltage regulator Z1, a resistor R2, a capacitor C2, an amplifier U1, a diode D3, a diode D4, a potentiometer RP1, and a potentiometer RP2. The model of the controllable precision voltage regulator Z1 is TL431. The non-inverting end of the amplifier U1 is connected to one end of the resistor R2 and the solar power supply module, and the other end of the resistor R2 is grounded. The inverting end of the amplifier U1 is connected to one end of the capacitor C2, one end of the potentiometer RP1, and one end of the potentiometer RP2. The other end of the capacitor C2 is grounded, the other end of the potentiometer RP1 is connected to the cathode of the diode D3, and the other end of the potentiometer RP2 is connected to the cathode of the diode D4. The positive electrode of the diode D3 is connected to the positive electrode of the diode D4, the output end of the amplifier U1, and the control electrode of the controllable precision voltage regulator Z1. The positive electrode of the controllable precision voltage regulator Z1 is connected to the G electrode of the MOS tube V1, and the negative electrode of the controllable precision voltage regulator Z1 is grounded.

4. The solar power generation and energy storage power supply circuit according to claim 1, characterized in that: The battery energy storage module includes a battery E1, the positive electrode of the battery E1 is connected to the solar power supply module, and the negative electrode of the battery E1 is grounded.

5. The solar power generation and energy storage power supply circuit according to claim 1, characterized in that: The undervoltage disconnect module includes a diode D5, a resistor R3, a MOS transistor V2, a capacitor C3, and a capacitor C4. The D pole of the MOS transistor V2 is connected to the cathode of the diode D5 and the solar power supply module. The anode of the diode D5 is connected to one end of the resistor R3, one end of the capacitor C3, and the G pole of the MOS transistor V2. The other end of the resistor R3 is grounded, and the other end of the capacitor C3 is grounded. The S pole of the MOS transistor V2 is connected to one end of the capacitor C4 and the power load, and the other end of the capacitor C4 is grounded.

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