소개
The Youmile CN3791 is a 12V solar charge controller board designed for single-cell lithium batteries. It features Maximum Power Point Tracking (MPPT) to efficiently extract power from solar panels, ensuring optimal charging performance even with varying light intensity. This module automatically adjusts to maximize the power output from your photovoltaic cells, converting it into charging current for your battery.
그림 1: Youmile CN3791 12V MPPT Solar Charge Controller Board with JST PH2.0 cables.
제품 끝view
이 섹션에서는 시각적으로 다음을 제공합니다.view of the CN3791 module, highlighting its key components and interfaces.
그림 2: 맨 위 view of the CN3791 board, displaying the main chip, inductor, capacitor, and JST PH2.0 connectors for solar input and battery output.
그림 3: 맨 아래 view of the CN3791 board, indicating potential voltage selection points (5V, 6V, 9V, 12V). For this specific 12V model, the input voltage requirement is 12V for charging a 3.7V lithium battery.
설정 및 연결
Follow these steps to correctly connect your solar panel and battery to the CN3791 charge controller board.
- 커넥터 식별: The board has two sets of JST PH2.0 connectors. One set is labeled "SOLAR IN" for the solar panel, and the other is labeled "BAT+" and "BAT-" for the lithium battery.
- 태양광 패널 연결: Insert the solar panel's JST PH2.0 connector into the "SOLAR IN" port. Ensure correct polarity (+ to + and - to -).
- 배터리 연결: Insert the lithium battery's JST PH2.0 connector into the "BAT+" and "BAT-" ports. Again, observe correct polarity.
- Optional Load Connection: The board also provides output terminals for a 3.7V load, allowing the battery to power a device while being charged.
그림 4: Connection diagram illustrating how to connect the solar panel, 3.7V lithium battery, and an optional 3.7V load to the CN3791 module using JST PH2.0 interfaces.
그림 5: The CN3791 board with the included JST PH2.0 cables connected, ready for solar panel and battery integration.
그림 6: 클로즈업 view of the JST PH2.0 connector cable, typically used for connecting the solar panel and battery to the charge controller.
작동 지침
Once connected, the CN3791 module operates automatically to charge your lithium battery.
- Automatic MPPT: The integrated CN3791 chip continuously tracks the maximum power point of the solar panel. This ensures that the maximum available power is harvested from the solar panel and converted into charging current for the battery, even under varying light conditions.
- 충전 프로세스: When the solar panel receives sufficient light, the module will begin charging the connected 3.7V lithium battery. The charging status may be indicated by onboard LEDs (refer to specific board markings if present).
- 과충전 보호 : The module is designed to prevent overcharging of the lithium battery, extending its lifespan.
유지
The CN3791 solar charge controller board requires minimal maintenance to ensure long-term performance.
- 깨끗하게 유지하십시오: Ensure the board is free from dust, dirt, and moisture. Use a soft, dry brush or cloth for cleaning if necessary.
- 환경 보호: Operate the module within its specified temperature and humidity ranges. Avoid exposure to extreme conditions or corrosive environments.
- 연결 검사: Periodically check all JST PH2.0 connections to ensure they are secure and free from corrosion.
문제 해결
If you encounter issues with your CN3791 solar charge controller, consider the following troubleshooting steps:
- 충전 표시 없음:
- 태양광 패널이 충분한 햇빛을 받고 있는지 확인하십시오.
- Check all connections (solar panel to board, battery to board) for proper seating and polarity.
- 태양광 패널의 볼륨을 확인하세요tage is appropriate for the 12V input requirement of the board.
- Confirm the battery is a compatible 3.7V lithium battery.
- 낮은 충전 전류:
- 태양광 패널이 깨끗하고 장애물이 없는지 확인하십시오.
- Check for any damage to the solar panel or connecting wires.
- Verify that the solar panel's power output matches the board's capabilities.
- 보드 과열:
- 보드 주변에 적절한 환기가 이루어지도록 하십시오.
- 입력 볼륨을 확인하세요tage and current from the solar panel do not exceed the board's maximum ratings.
명세서
| 특징 | 세부 사항 |
|---|---|
| 모델 번호 | JK-YM-046 |
| 입력 Voltage | 12 Volts (from solar panel) |
| 출력 볼륨tage | Designed for 3.7V single-cell lithium battery charging |
| 충전 유형 | MPPT(최대 전력점 추적) |
| 배터리 유형 | Single-cell lithium battery |
| 커넥터 | JST PH2.0 |
| 치수(길이 x 너비 x 높이) | 45mm x 20mm x 12mm (이미지를 기준으로 한 대략적인 크기) |
| 무게 | 10그램(대략) |
그림 7: Physical dimensions of the CN3791 module, showing a length of 45mm and a width of 20mm.
보증 및 지원
For warranty information or technical support, please contact the seller or manufacturer directly. Refer to your purchase documentation for specific details.
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