Solar inverter PCB manufacturing
♦Name:Solar Controller
♦Photovoltaic panel input: DC16V/DC32V/DC64V
♦Battery voltage to be charged: DC12V/DC24V/DC48V
♦Control: Adaptive, 485 control
♦System voltage: 12V24V48V universal
♦Rated current: 60A
♦Applicable battery types: lead-acid / colloidal / ternary / iron phosphate customization
♦Charging mode: current limiting, constant voltage, float charging
♦Static power consumption: <3W
♦Operating temperature: -35°C – +80°C
Product Description
The solar controller is called a solar charge/discharge controller, which is an automatic control device used in solar power generation systems to control the charging of batteries by multiple solar arrays as well as the power supply from batteries to solar inverter loads. It regulates and controls the charging and discharging conditions of the battery, and controls the power output of the solar cell module and the battery to the load according to the load power demand, which is the core control part of the whole photovoltaic power supply system.
Principle of solar controller
Solar panel belongs to photovoltaic equipment (mainly semiconductor material), which generates electric current through photoelectric effect after light irradiation. Due to the properties and limitations of materials and light, the generated current is also a fluctuating curve. If the generated current is directly charged to the battery or directly to the load power supply, it is easy to cause damage to the battery and load, seriously reducing their life.
Therefore, we must first send the current into the solar controller, using a series of special chip circuits to digitally regulate it, and add multi-stage charging and discharging protection, and at the same time, use our unique control technology “adaptive three-stage charging mode”, to ensure that the battery and the load’s operational safety and service life. When supplying power to the load, the current from the battery flows into the solar controller first, and then the current is sent to the load after it is regulated. The purpose of this is: first, to stabilize the discharge current; secondly, to ensure that the battery is not over-discharged; thirdly, a series of monitoring and protection of the load and battery.
Product Applications
Marine Solar Systems
Home Solar Power
Caravan Solar System
Characteristics of solar energy controller
1. Intelligent control is achieved by using microcontrollers and special software;
2. Accurate discharge control using battery discharge rate characteristic correction. The discharge terminal voltage is the control point corrected by the discharge rate curve, which eliminates the inaccuracy of simple voltage control over discharge, and conforms to the inherent characteristics of the battery. That is, different discharge rates have different end voltages;
3. It has fully automatic control of overloading, overdischarge, electronic short circuits, overload protection, and unique anti-reverse connection protection; all the above protections do not damage any parts and do not burn the fuse;
4. The use of PWM series charging main circuit, so that the charging circuit voltage loses more than the use of diodes in the charging circuit to reduce the voltage loss of nearly half, charging efficiency is higher than non-PWM 3% -6%, increasing the power time; over-discharge recovery of lifting charging, normal direct charging, floating charging automatic control mode to make the system longer service life; at the same time, with high precision temperature compensation;
5. Intuitive LED light tube to indicate the current battery status, so that users understand the use of the situation;
6. All controls all industrial-grade chips (only for use with an industrial-grade controller), can run freely in cold, high temperature, humid environment. At the same time, the use of crystal timing control, timing control is accurate;
7. Cancelled the potentiometer adjustment control set point, and the use of E-square memory to record the work of the control point, so that the setting digitization, eliminating the potentiometer due to vibration bias, temperature drift, etc., so that the error control point reduces the accuracy and reliability of the factors;
8. With the use of digital LED display and setup, one-key operation can complete all the settings, the use of an extremely convenient and intuitive role is to control the entire system’s working state, and the battery plays the role of overcharge protection, overdischarge protection. In places with large temperature differences, qualified controllers should also have the function of temperature compensation. Other additional features such as the light control switch, time control switch should be optional controllers.
8 self-protection functions
1. Input power limit protection
When the power of the battery board is greater than the rated power, the controller will limit the power of the battery board within the rated power to prevent the current from being too large to damage the controller, and the controller will enter the current charging limit.
2. Battery reverse connection protection
The system will not work after the battery is turned on inversely, and the controller will not be burned.
3. Photovoltaic input voltage overvoltage protection
The controller will automatically turn off the PV input if the voltage at the PV array input is too high.
4. PV input short circuit protection
The controller will disconnect the charging after the PV array input is short-circuited, and the charging will automatically resume when the short-circuit condition is cleared.
5. PV input reverse connection protection
When the polarity of the PV array is reversed, the controller will not be damaged and will continue to work normally after correcting the wiring error.
6.Load over power protection
When the load exceeds the rated power, the load will delay protecting the output.
7. Anti-reverse load protection at night
Prevent the battery from discharging through the battery plate at night.
8.Over temperature protection
TVS lightning protection