CN201297559Y - Solar energy controller - Google Patents

Abstract

The utility model relates to an intelligent solar controller, comprising: a light control module used to collect the current light intensity for charging control and lighting control; a battery protection module used for preventing battery overcharging and Over-discharge; PWM power output module, used to control the output of different lighting brightness; timing unit, using a perpetual calendar chip, used to provide accurate timing function, to control the brightness of the light by time; the storage unit is used to set and save the working mode, and Record the actual length of day and night in order to adjust the time control period of the light; the main control unit uses a single-chip microcomputer to coordinate the various components for intelligent processing and control. Through the above modules, the utility model realizes the intelligent adjustable high-efficiency control of solar lighting products, which is simple to operate and convenient to set up; compared with the existing controllers on the market, it can save energy and improve the efficiency of light energy application by more than 30%.

Description

A solar controller

technical field

The utility model relates to the application field of solar energy, in particular to an intelligent solar controller.

Background technique

With the rapid development of industrialization and urbanization, human society's demand for energy is increasing, energy prices are rising rapidly, energy shortages are becoming more and more prominent, and pollution problems caused by large-scale consumption of conventional energy are becoming more and more serious. Therefore, the research and utilization of new energy is becoming a hot spot, and solar energy, as a pollution-free and renewable new energy, is becoming more and more widely used. The controller developed in this project is an electronic control system used in solar lighting products. At present, there are the following problems in general similar products:

1) The working method cannot be set, or the setting method is inconvenient;

2) The lighting time of turning on the lights cannot be corrected according to the seasonal difference, resulting in energy waste;

3) A relatively simple method is adopted for output control, which is not the best energy-saving method.

It can be seen that if the current solar controller uses light control to control the output, it uses the voltage value of the solar module under different light intensities to distinguish day and night, and the lights are turned off during the day and turned on at night. However, the disadvantage of only light control is that the lighting time is too long. Turning on the lights in the middle of the night is a waste of energy, and it is a kind of light pollution to turn on the lights in the middle of the night in many places.

Contents of the invention

Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a solar controller with certain intelligence and multifunctional control functions.

In order to achieve the above purpose, the utility model intelligent solar controller includes:

The main control unit MCU is used to coordinate each component module for intelligent processing and control;

The light control module is used to collect the current light intensity for charging control and lighting control;

Battery protection module, used to prevent overcharge and overdischarge of the battery;

PWM power output module, used to control and output different lighting brightness;

State parameter setting, used to set control parameters;

Also includes:

Timing unit, used to provide precise timing function, to control the brightness of lights in different periods;

Storage unit for setting and saving the working mode, and recording the actual length of day and night, so as to adjust the timing period of the light.

Through the above modules, the utility model realizes the intelligent adjustable high-efficiency control of solar lighting products, which is simple to operate and convenient to set up; compared with the existing controllers on the market, it can save energy and improve the efficiency of light energy application by more than 30%.

Description of drawings

Fig. 1 is a block diagram of the utility model;

Fig. 2 is the utility model embodiment circuit diagram;

Fig. 3 is a flow chart of realizing intelligent judgment of day and night length according to the embodiment of the present invention.

Figure 4 is a comparison diagram of different lighting control modes in the embodiment of the present invention

Detailed ways

The technical scheme of the utility model will be described in detail below in conjunction with the accompanying drawings and embodiments.

According to Figure 1, the working principle of the smart solar controller is as follows:

Use a dedicated setter to write data to the internal storage unit through the setting interface to set the working mode of the controller;

The main control unit of the controller reads the data in the memory, and controls the power output according to the working mode represented by the data in the memory;

Output control and output power adjustment are mainly completed by the PWM power output module;

The perpetual calendar chip can provide more accurate timing services for the main control unit, which is used to realize the time control function and provide different power outputs at different times;

The light control module is connected to the solar module, and after collecting the current light intensity and transforming it into a digital signal, it is sent to the main control unit, and the main control unit performs delay processing, and performs corresponding processing after determining that the control threshold is reached;

The battery protection module is mainly used for overcharge and overdischarge protection of the battery.

Although some more efficient controllers have designed the function of "light control + time control", that is: turn on the lighting when the light is insufficient (light control, think it is night), and turn it off after a few hours (time control, basically late at night, No need for lighting), then turn on or fully brighten after a few hours (in the early morning, lighting needs), and then turn off (light control) when the light is sufficient.

But the time period that the current control can achieve is fixed, for example, choose the 6+6 mode (as shown in <2> in Figure 4), that is, turn on the light for 6 hours, turn off the light for 6 hours, and then turn on the light again. This is an appropriate control pattern for a winter day shown in the upper part of Figure 4, as follows:

Insufficient light was detected at about 17 o'clock in the evening, and the lighting was turned on, and it was turned off 6 hours later (about 23 o'clock), and turned on again 6 hours later (about 5 o'clock in the morning of the next day), and waited until dawn (about 2 hours later, 7 o'clock) left and right) then goes off.

But this is not suitable in summer, because the duration of summer night is short, as shown in the lower part of Figure 4, it is dark at about 18 o'clock, and it is turned off after 6 hours (about 24 o'clock) when the lighting is turned on, and it is already dark after 6 hours. It was 6 o'clock the next day, and it was already dawn in summer, so it didn't have the function of turning on the lights again in the early morning.

If you choose the 5+5 mode (as shown in <3> in Figure 4), that is, turn on the light for 5 hours, turn off the light for 5 hours, and then turn on the light again. This is suitable in summer as shown in Figure 1, and it is a suitable control mode on a certain day in winter, but in winter (as shown in the upper part of Figure 4), it will appear that the lights are turned off too early at night, and the lights are turned on the next day. The problem of too early and too long time makes it difficult to achieve the ideal requirements and energy-saving goals.

It can be seen that the "light control + time control" mode of fixed time period cannot adapt to the change of day and night length in four seasons and the different length of day and night due to different geographical locations. In order to obtain a more economical solution, this controller adopts intelligent judgment, and its process is shown in Figure 4. The system automatically records the length of day and night in the latest period, and removes individual mutation data (such as the wrong length of day and night caused by rainy weather). The average value is used as the actual length of day and night, so that the automatic adjustment can greatly improve the energy utilization rate.

For example, the user sets it to (4/5/1) mode (as shown in <4> in Figure 4), that is, the time of turning on the lights in the dark, the time of turning off the lights in the middle of the night, and the time of turning on the lights before dawn account for the length of the night respectively. 40%, 50%, and 10%. In winter as shown in Figure 4, the night time calculated by the flow shown in Figure 3 is 14 hours, so the controller automatically adjusts to: first turn on the lights at night for 5.6 hours, then turn off the lights for 7 hours in the middle of the night, and then turn on the lights for 1.4 hours. In the summer time shown in Figure 4, the night time calculated by the process shown in Figure 3 is 12 hours, and the controller automatically adjusts to: first turn on the lights at night for 4.8 hours, then turn off the lights for 6 hours in the middle of the night, and then turn on the lights for 1.2 hours. It can be seen from Figure 4 that no matter how the length of day and night changes in winter or summer, the system can automatically adjust and carry out economical and reasonable lighting control.

Fig. 2 is a circuit diagram realized by the utility model.

The utility model uses a built-in storage unit to save the working mode set by the user. The user can choose the control mode of light control, time control or light control + time control, and can also set the working period; the PWM mode control output can be controlled according to The user can easily control the output power of different time periods by setting; intelligently judge the time period, with the changing of the seasons, according to the change of the external light intensity, the actual length of day and night is automatically corrected, thereby adjusting the length of the working period.

Claims (2)

1, a kind of controller for solar comprises:

Main control unit MCU is used for coordinating respectively to form module, carries out Intelligent treatment and control;

Light-operated module is used to gather current intensity of illumination, with the control of charging control and opening houselights;

The battery protection module is used for preventing overcharging and putting excessively of battery;

The pwm power output module is used to control the different brightness of illumination of output;

State parameter is provided with, and is used to be provided with the control parameter;

It is characterized in that, also comprise:

Timing unit links to each other with described main control unit MCU, is used to provide accurate clocking capability, controls lamplight brightness at times;

Memory cell links to each other with described main control unit MCU, is used for being provided with and preserving mode of operation, and writes down reality length round the clock, so that adjust the time control period of light.

2, controller for solar according to claim 1 is characterized in that described timing unit is the perpetual calendar chip.

Images