Solar energy controller It is an automatic control device used in solar power systems, managing the automatic charging of multiple solar panel arrays into storage batteries, as well as the automatic supply of power from the batteries to the solar inverter's load.

　　The solar energy controller features a high-speed CPU microprocessor and a high-precision A/D analog-to-digital converter, making it a microcomputer-based data acquisition and monitoring control system. It not only enables real-time, rapid collection of the current operating status of the photovoltaic system, providing instant access to operational information from the PV power plant, but also allows for detailed historical data accumulation. This capability offers an accurate and comprehensive basis for evaluating the rationality of the PV system design and verifying the reliability of system component quality.

　　Additionally, Solar energy controller It also features serial communication data transmission, enabling centralized management and remote control of multiple photovoltaic system substations.

　　The solar controller also features a search function, scanning for the maximum power point every 2 hours across the entire operating voltage range of the solar panel. Additionally, its three-stage I-U curve charging control with temperature compensation can significantly extend battery life. Solar energy controller Suitable for standalone 12V or 24V systems, significantly reducing the overall system cost.

　　Function

　　1. Power adjustment function.

　　2. Communication function, simple indication function, and protocol communication function.

　　3. Comprehensive protection features: electrical protection, reverse connection protection, short-circuit protection, and overcurrent protection.

　　Charge and discharge protection

　　1. Constant-Current Charging Protection Voltage: Also known as emergency charging, constant-current charging is a type of fast charging. It typically employs high current when the battery voltage is low and charges the battery at a relatively higher voltage. The protection voltage for constant-current charging usually corresponds to the "overcharge protection point"—during charging, the battery terminal voltage must not exceed this threshold, as exceeding it could lead to overcharging and damage the battery.

　　2. Equalization Control Point Voltage: After the bulk charging phase, the charge-discharge controller typically allows the battery to sit for a while, enabling its voltage to drop naturally. Once the voltage reaches the "recovery voltage" level, the system enters the equalization stage.

　　3. Float Charge Control Voltage: Typically, after equalization is complete, the battery is allowed to sit for a period of time so its terminal voltage can naturally drop. Once the voltage reaches the "maintenance voltage" point, the system switches to float charging. Currently, most systems use PWM (Pulse Width Modulation), which operates similarly to "trickle charging"—a method that applies small bursts of current whenever the battery voltage dips. This gentle, pulse-like charging helps prevent the battery from overheating, making it ideal for battery health, as internal temperature plays a critical role in both charging and discharging processes.

　　4. Over-discharge Protection Cut-off Voltage: For safety reasons, the over-discharge protection point voltage for a 12V battery is typically set artificially at 0.3V higher than the standard value—this adjustment serves as temperature compensation or zero-drift correction for the control circuit, bringing the effective cut-off voltage to 11.10V. Consequently, in a 24V system, the over-discharge protection point voltage would be 22.20V.