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Solar Controller Working Principle
- Apr 18, 2018 -

Solar controller working principle

      Using a single-chip microcomputer and dedicated software, intelligent control was realized, and accurate discharge control corrected by the battery discharge rate characteristics was used. The end-of-discharge voltage is a control point corrected by the discharge rate curve, eliminating the inaccuracy of a simple voltage-controlled overdischarge, consistent with the inherent characteristics of the battery, that is, different discharge rates have different final voltages; with overcharge, overdischarge, Electronic short circuit, overload protection, unique anti-reverse protection and other automatic control; the above protection does not damage any parts, do not burn insurance; using a series PWM charging main circuit, so that the charging circuit voltage loss than the use of diode charging circuit Reduced by nearly half, the charging efficiency is 3%-6% higher than that of non-PWM, which increases the power consumption time; overcharges the charging and restores charging, normal direct charging, and floating charge automatic control methods make the system have a longer service life; High-precision temperature compensation; Intuitive LED LED indicates the status of the current battery, allowing users to understand the status of use; All control using industrial-grade chips (only with industrial grade I controller), can run freely in cold, high temperature, humid environment. At the same time using the crystal oscillator timing control, timing control accuracy; cancel the potentiometer adjustment control set point, and the use of the E-side memory recording the work control point, so that the set of digital, eliminating the potentiometer vibration bias, temperature drift, etc. The control point has the error to reduce the accuracy and reliability of the factors; using the digital LED display and settings, one-button operation can complete all the settings, the use of extremely convenient and intuitive role is to control the working status of the entire system and play with the battery Overcharge protection, over discharge protection. In areas with large temperature differences, qualified controllers should also have temperature compensation. Other additional functions such as light-controlled switches and time-controlled switches should be optional for the controller. 

The Battery

      The role of the battery is to store the electrical energy from the solar panel when there is light, and release it when needed. Solar batteries are the application of 'batteries' in solar photovoltaic power generation. The widely used domestic solar batteries are mainly maintenance-free lead-acid batteries and colloidal batteries. These two types of batteries are suitable for reliable solar power generation due to their inherent "free" maintenance characteristics and less environmental pollution. Systems, especially unattended workstations.


The direct solar output is generally 12VDC, 24VDC, 48VDC. In order to supply electric energy to 220VAC electric appliances, it is necessary to convert the DC electric energy generated by home solar power generation into AC electric energy, and therefore it is necessary to use a DC-AC inverter. The working principle of photovoltaic power generation Photovoltaic power generation is a technology that utilizes the photovoltaic effect of a semiconductor interface to convert light energy directly into electrical energy. The key element of this technology is solar cells. After the solar cells are connected in series, they can be packaged to form a large-area solar cell module, and then a photovoltaic device can be formed by combining the power controller and other components. Photovoltaic power generation has the advantage of being less restricted by geographical regions because it is sunny; the photovoltaic system also has the advantages of being safe, reliable, noise-free, low-pollution, energy-efficient, and without the need to consume fuel and erection of transmission lines.


Photovoltaic power generation is based on the principle of photovoltaic effect, using solar cells to convert solar energy directly into electrical energy. Regardless of whether it is used independently or connected to the grid, the PV system is mainly composed of solar panels (components), controllers and inverters. They are mainly composed of electronic components and do not involve mechanical components. Therefore, photovoltaic power generation equipment Extremely refined, reliable and stable, long life, easy installation and maintenance. In theory, photovoltaic technology can be used in any application where power is needed, from spacecraft, down to home power, up to megawatts of power stations, to toys, and photovoltaic power is everywhere. The basic components of solar photovoltaic power generation are solar cells (sheets), monocrystalline silicon, polysilicon, amorphous silicon, and thin-film batteries. Monocrystalline and polycrystalline batteries are the most used, and amorphous batteries are used in small systems and calculators for auxiliary power supplies.