Waveshare Solar Power Management Module, for 6V~24V Solar Panel

Overview

This solar power management module is designed for 6V~24V solar panel. It can charge the 3.7V rechargeable Li battery through solar panel or USB connection, and provides 5V/1A regulated output.

The module features MPPT (Maximum Power Point Tracking) function and multi protection circuits, therefore, it is able to keep working with high-efficiency, stability, and safety. It is suited for solar powered, low-power IoT, and other environmental protection projects.

Features

• Supports MPPT (Maximum Power Point Tracking) function, maximizing the efficiency of the solar panel
• Supports solar panel / USB connection battery charging
• For 6V~24V solar panel, DC-002 jack input or screw terminal input
• Onboard MPPT SET switch, select the level closed to input level to improve charging efficiency
• Two 5V output interfaces: pinheaders and USB port
• Onboard high capacity aluminum electrolytic capacitor and SMD ceramic capacitor, reducing the ripple, stable performance
• 14500 battery holder and PH2.0 battery connector, for connecting multi kinds of 3.7V rechargeable Li battery
• Several LED indicators, for monitoring the status of solar panel and battery
• Multi protection circuits: over charge / over discharge / reverse protection / over heat / over current, stable and safe to use

Specifications

• Solar panel input voltage (SOLAR IN): 6V~24V
• Micro USB input voltage (USB IN): 5V
• Pinheader / USB output (USB OUT): 5V 1A
• Charging cutoff voltage: 4.2V±1％
• Over discharging protection voltage: 2.9V±1％
• Solar panel charge efficiency:: ~78>#/li###
• USB charge efficiency:: ~82>#/li###
• 3.7V battery boost output efficiency: ~86>#/li###
• Max quiescent current: <2mA
• Operating temperature: -40℃~85℃
• Dimension: 65.2mm × 56.2mm × 22.9mm

What's on Board

1. Solar panel charging input: charged by solar panel, DC-002 jack or screw terminal
2. USB charging input: charged by USB connection, connect a 5V power adapter through the Micro USB port
3. 5V/1A power output: provides regulated 5V/1A output, USB port or 2.54mm pinheader
4. Battery interfaces: for connecting 3.7V rechargeable Li battery, PH2.0 connector or 14500 battery holder
5. CS8501: USB power management chip, for USB charging and 5V/1A boost output
6. CN3791: solar power management chip, for solar panel charging and buck input
7. Li battery protection chip: Li battery over charge / over discharge protection
8. Battery switch
9. MPPTSET switch (bottom side): supported level: 6V/9V/12V/18V/24V select the level closed to input level to improve charging efficiency
10. BOOT key
11. Battery capacity indicators
12. USB charging indicators: USB Charge: on when USB charging USB Done: on when the battery is full charged by USB
13. Solar panel charging indicators: Solar Charge: on when solar panel charging Solar Done: on when the battery is full charged by solar panel Solar Warning: on when solar panel reverse connection
14. Battery warning: on when battery reverse connection
15. Power output indicator: 5V/1A output

Application Example

Dimension