A wind-solar complementary intelligent charge-discharge control device for ship

Abstract

The utility model discloses a kind of marine wind and light complementary intelligent charge-discharge control device, including wind-driven generator P4 and solar cell P2, the two output ends of wind-driven generator P4 are connected with sampling resistance R5 and sampling resistance R6, sampling voltage output end AD2 is connected between sampling resistance R5 and sampling resistance R6, the two output ends of solar cell P2 are connected with sampling resistance R1 and sampling resistance R2, sampling voltage output end AD0 is connected between sampling resistance R1 and sampling resistance R2, one output end of solar cell P2 is electrically connected with charge diode D1, one end of charge diode D1 is connected with filter capacitor C3, one end of filter capacitor C3 is connected with solar cell P2, one end of charge diode D1 is also connected with MOSFET tube Q1, one port of MOSFET tube Q1 is connected with battery P1, the utility model has the characteristics of strong practicability.

Description

Technical Field

[0001] This utility model relates to the field of power supply system technology, specifically to a marine wind-solar hybrid intelligent charging and discharging control device. Background Technology

[0002] A stand-alone photovoltaic (PV) power generation system mainly consists of several parts: solar panels, wind power generation equipment, controller, battery, and load. The performance requirements for the controller vary depending on the application.

[0003] Existing marine wind-solar hybrid intelligent charging and discharging control devices cannot achieve optimal charging and discharging functions for the batteries based on their own voltage, resulting in poor practicality. Therefore, it is essential to design a more practical marine wind-solar hybrid intelligent charging and discharging control device. Utility Model Content

[0004] The purpose of this invention is to provide a marine wind-solar hybrid intelligent charging and discharging control device to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a marine wind-solar hybrid intelligent charging and discharging control device, including a wind turbine P4 and a solar cell P2. The two output terminals of the wind turbine P4 are connected to sampling resistors R5 and R6. A sampling voltage output terminal AD2 is connected between the sampling resistors R5 and R6. The two output terminals of the solar cell P2 are connected to sampling resistors R1 and R2. A sampling voltage output terminal AD0 is connected between the sampling resistors R1 and R2.

[0006] According to the above technical solution, one output terminal of the solar cell P2 is electrically connected to a charging diode D1, one end of the charging diode D1 is connected to a filter capacitor C3, and one end of the filter capacitor C3 is connected to the solar cell P2.

[0007] According to the above technical solution, one end of the charging diode D1 is also connected to a MOSFET Q1, one port of the MOSFET Q1 is connected to a storage battery P1, and one port of the storage battery P1 is connected to a solar cell P2.

[0008] According to the above technical solution, a freewheeling diode D2 is connected between the two ports of the battery P1, and sampling resistors R3 and R4 are connected between the two ends of the freewheeling diode D2. A sampling voltage output terminal AD1 is connected between the sampling resistors R3 and R4.

[0009] According to the above technical solution, one port of the battery P1 is connected to an external load P3, and a MOSFET Q2 is connected between one port of the battery P1 and one end of the external load P3. One port of the MOSFET Q2 is connected to a resistor R11, one end of the resistor R11 is electrically connected to an optocoupler OP2, and one port of the optocoupler OP2 is connected to an input terminal P12.

[0010] According to the above technical solution, one port of the MOSFET Q1 is connected to a resistor R10, one end of the resistor R10 is electrically connected to an optocoupler OP1, and one port of the optocoupler OP1 is connected to an input terminal P11.

[0011] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: This utility model uses a voltage divider circuit to sample the voltage of the storage battery, wind turbine and solar cell, and adopts the PWM control principle to control the charging of the storage battery. By changing the duty cycle of the PWM signal, the effective charging time of the storage battery can be controlled to achieve the purpose of reasonable charging. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0013] Figure 1 This is a schematic diagram of the system design of this utility model;

[0014] Figure 2 This is a schematic diagram of the charging and discharging control circuit of this utility model. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-2This utility model provides a technical solution: a marine wind-solar hybrid intelligent charging and discharging control device, including a wind turbine P4 and a solar cell P2. The two output terminals of the wind turbine P4 are connected to sampling resistors R5 and R6, and a sampling voltage output terminal AD2 is connected between sampling resistors R5 and R6. The two output terminals of the solar cell P2 are connected to sampling resistors R1 and R2, and a sampling voltage output terminal AD0 is connected between sampling resistors R1 and R2. The sampling voltage is obtained using the principle of two resistors connected in series, with the ratio of the two resistors being 10:1.

[0017] One output terminal of solar cell P2 is electrically connected to a charging diode D1. One end of the charging diode D1 is connected to a filter capacitor C3. One end of the filter capacitor C3 is connected to solar cell P2.

[0018] One end of the charging diode D1 is also connected to the MOSFET Q1, one port of the MOSFET Q1 is connected to the storage battery P1, and one port of the storage battery P1 is connected to the solar cell P2.

[0019] A freewheeling diode D2 is connected between the two terminals of battery P1. A sampling resistor R3 and a sampling resistor R4 are connected between the two terminals of the freewheeling diode D2. A sampling voltage output terminal AD1 is connected between the sampling resistor R3 and the sampling resistor R4.

[0020] One port of battery P1 is connected to an external load P3. A MOSFET Q2 is connected between one port of battery P1 and one end of the external load P3. A resistor R11 is connected to one port of MOSFET Q2. One end of resistor R11 is electrically connected to an optocoupler OP2. One port of optocoupler OP2 is connected to an input terminal P12. When battery P1 is fully charged, its voltage is about 15V, and the sampling voltage output through AD1 is about 1.36V.

[0021] A resistor R10 is connected to one port of MOSFET Q1. One end of resistor R10 is electrically connected to optocoupler OP1. One port of optocoupler OP1 is connected to input terminal P11.

[0022] Charging control is primarily implemented through MOSFET Q1, while discharging control is primarily implemented through MOSFET Q2. The sampling voltage output terminals AD0, AD1, and AD2 sample the outputs of the solar cell P2 and battery P1, respectively. The AD0 and AD1 signals determine whether the solar cell and battery are connected to the circuit; if not connected, the voltage output is 0. If either signal is 0, charging control is not performed. When both signals have voltage, the battery begins charging even without a connected load.

[0023] The charging and discharging circuit consists of charging diode D1, filter capacitor C3, freewheeling diode D2, MOSFET Q1, and MOSFET Q2. Diode D1 is used to prevent reverse charging; it activates when the battery voltage is higher than the solar cell voltage on cloudy days or at night.

[0024] The charging process uses PWM control to control the charging of the battery. An optocoupler is added between the MSOFET and the microcontroller control terminal. The main purpose is to isolate the charging circuit from the microcontroller, improve safety and stability, and avoid voltage crosstalk from damaging the microcontroller.

[0025] When a low level is input to P12, the LED inside the optocoupler is off and does not emit light. At this time, the phototransistor inside the optocoupler also remains off because it does not receive a light signal, effectively turning the switch "open." Q1 is off and not charging. When P12 is high, the LED inside the optocoupler conducts and emits light, and the phototransistor receives a light signal and becomes on, effectively turning the switch "closed." This creates a conducting loop in the MOSFET, turning on Q1 and allowing the solar cell to charge the battery. Changing the duty cycle of the PWM signal controls the effective charging time of the battery, achieving proper charging. The current battery voltage is determined. If the battery voltage is greater than 15V, the PWM signal duty cycle is adjusted to 0. If the battery voltage is lower than 15V, the PWM signal duty cycle is adjusted accordingly.

[0026] The voltage of the battery, wind turbine, and solar cells is sampled using a voltage divider circuit. The charging of the battery is controlled by the PWM control principle. By changing the duty cycle of the PWM signal, the effective charging time of the battery can be controlled to achieve the purpose of reasonable charging.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A wind-solar complementary intelligent charge-discharge control device for ships, comprising a wind turbine P4 and a solar cell P2, characterized in that: The two output terminals of the wind turbine P4 are connected to sampling resistors R5 and R6, and a sampling voltage output terminal AD2 is connected between sampling resistors R5 and R6. The two output terminals of the solar cell P2 are connected to sampling resistors R1 and R2, and a sampling voltage output terminal AD0 is connected between sampling resistors R1 and R2.

2. The marine wind-solar hybrid intelligent charging and discharging control device according to claim 1, characterized in that: One output terminal of the solar cell P2 is electrically connected to a charging diode D1. One end of the charging diode D1 is connected to a filter capacitor C3, and one end of the filter capacitor C3 is connected to the solar cell P2.

3. The marine wind-solar hybrid intelligent charging and discharging control device according to claim 2, characterized in that: One end of the charging diode D1 is also connected to a MOSFET Q1, one port of the MOSFET Q1 is connected to a storage battery P1, and one port of the storage battery P1 is connected to a solar cell P2.

4. The marine wind-solar hybrid intelligent charging and discharging control device according to claim 3, characterized in that: A freewheeling diode D2 is connected between the two ports of the battery P1. A sampling resistor R3 and a sampling resistor R4 are connected between the two ends of the freewheeling diode D2. A sampling voltage output terminal AD1 is connected between the sampling resistor R3 and the sampling resistor R4.

5. A marine wind-solar hybrid intelligent charging and discharging control device according to claim 4, characterized in that: One port of the battery P1 is connected to an external load P3. A MOSFET Q2 is connected between one port of the battery P1 and one end of the external load P3. A resistor R11 is connected to one port of the MOSFET Q2. One end of the resistor R11 is electrically connected to an optocoupler OP2. One port of the optocoupler OP2 is connected to an input terminal P12.

6. A marine wind-solar hybrid intelligent charging and discharging control device according to claim 5, characterized in that: One port of the MOSFET Q1 is connected to a resistor R10, one end of the resistor R10 is electrically connected to an optocoupler OP1, and one port of the optocoupler OP1 is connected to an input terminal P11.

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