MPPT technology --- solar maximum power tracking

Nominal 12V (10.8V 11.1V) full junction voltage 12.6V lithium battery3 series lithium battery charge management board3A high current smart trickle, constant current, constant voltage charging management board

The price does not include a heat sink, and an additional 3 yuan is required for the heat sink (the charging current is less than 2A without heat dissipation)

Solar cell maximum power point tracking (MPPT)

The solar cell maximum power point tracking (MPPT) is to ensure that the photovoltaic cell always outputs the maximum power when the light intensity changes to make full use of solar energy. In general, it is necessary to use a switch-mode DC-DC converter to realize the MPPT function to keep the product of output voltage and charging current (output power) maximized,

CN3722 is to use the switch step-down mode DC-DC conversion method to achieve the maximum power point tracking function of the photovoltaic cell. Its input voltage can reach up to 28V, which is very suitable for applications where the input voltage and the battery voltage are relatively large.

Charging management board features:1. High-end technology MPPT solar maximum power tracking charging management chip, with trickle, constant current, and constant voltage charging management2. Imported high frequency low conduction internal resistance double MOS tube, high current diode, high efficiency flat high power inductor, alloy current detection resistor3. The large aluminum heat sink at the bottom ensures long-term stable operation under high current4. High-speed and efficient charging method5. Dual status indicator lights, the red light flashes when the battery is not connected, the green light is always on, the red light is on when charging, the green light is on when it is full

Basic parameters:Input voltage: nominal 18V or so solar panels (no-load about 21V solar panels)Output voltage: Nominal 12V (10.8 11.1V) full junction voltage 12.6V lithium battery 3 strings of lithium battery charge managementOutput current: maximum constant current 3A (charging current greater than 2A, please add heat)Wiring method: padIN+ input positive, IN- input negative (SOLAR)BAT+ battery positive, BA- battery negativeSize: 31*45mm