1. Introduction
The DALY Smart Battery Management System (BMS) is designed to protect 10S 36V 120A Li-ion battery packs, commonly used with 18650 cells. This BMS integrates essential protection features and offers smart control capabilities via Bluetooth and PC software. It ensures optimal performance and extends the lifespan of your lithium battery.
Key features include overcurrent, overcharge, overdischarge, short circuit, and temperature protection. The robust design incorporates injection patent technology and a patent shell, providing waterproof, dustproof, shockproof, and anti-static properties. High-quality components ensure pressure resistance and accurate data acquisition.
Product Overview Video
Video 1: DALY Smart BMS with Cooling Fan (80A to 500A). This video provides a general overview of the DALY Smart BMS series, showcasing various models and their features, including cooling fans for higher amperage units.
2. Package Contents
Upon opening the package, please verify that all items listed below are present and undamaged:
- 3.7V Li-ion NCM BMS (1 unit)
- Bluetooth Module (1 unit)
- NTC Sensor (1 unit)
- Sampling Cable (1 unit)
- UART Cable (1 unit)
- Instruction Manual (1 unit)
3. Specifications
| Feature | Specification |
|---|---|
| Product Type | Li-ion 10S 120A (Common Port with Balance) |
| Communications | UART (Bluetooth module included) |
| Discharge Current | 120A |
| Over-Discharge Current | 180A |
| Charge Current | 60A |
| Overcharge Current | 180A |
| Overcharge Voltage | 4.25V ± 0.05V (per string) |
| Over-Discharge Voltage | 2.7V ± 0.05V (per string) |
| Charge Voltage | S*4.2V |
| Size (L x W x H) | 95 x 212 x 20mm (3.74 x 8.35 x 0.79 inches) |
| Output Wire Gauge | 6AWG / 160mm |
| Balance Wires Gauge | 22AWG / 600mm |
| Item Weight | 2.69 pounds |
4. Safety Information
- Always disconnect balance wires before connecting or disconnecting the BMS.
- Ensure the BMS cooling surface side remains uncovered for proper heat dissipation.
- Use DALY matching balance wires for optimal performance and safety.
- Verify correct wiring and voltage of each cell string before inserting the BMS to prevent damage.
- Incorrect wiring can lead to short circuits, component burnout, or battery damage.
- Wear appropriate personal protective equipment (PPE) such as insulated gloves and safety glasses during installation.
- Avoid working in humid or wet conditions.
5. Installation and Wiring
5.1. Prepare Materials and Tools
Before beginning the wiring process, gather all necessary materials and tools. This includes the BMS unit, battery pack, balance wires, multimeter, soldering iron, solder, wire cutters, and insulated scissors.
Preparation Video
Video 2: Prepare materials before Daly BMS wiring. This video demonstrates the essential materials and tools required for the BMS wiring process, ensuring you have everything ready before starting.
5.2. Determine Sampling Points
Accurately identifying the sampling points on your battery pack is crucial for correct BMS operation. Use a multimeter to verify the voltage of each cell string.
Sampling Point Determination Video
Video 3: Daly BMS sampling point determination. This video guides you through the process of identifying and marking the correct sampling points on your battery pack for accurate BMS connection.
5.3. Test Battery Voltage
Before connecting the BMS, it is imperative to test the voltage of each individual cell and the total battery pack voltage. This step helps identify any pre-existing issues and ensures compatibility with the BMS.
Battery Voltage Test Video
Video 4: Test Battery Voltage Before Connecting with Daly BMS. This video demonstrates how to safely and accurately test the voltage of your battery cells and pack before proceeding with BMS installation.
5.4. Wiring Diagram
Refer to the following diagram for the correct wiring connections. Ensure all connections are secure and follow the specified order.
5.5. Connecting Balance Wires
Carefully connect the balance wires to the battery cells according to the determined sampling points. Ensure proper soldering techniques are used if required.
Balance Wires Welding Video
Video 5: Daly BMS Wires Welding Video. This video demonstrates the correct procedure for welding the balance wires to the battery cells, emphasizing precision and safety.
5.6. BMS Connection and Activation
Once all balance wires are correctly connected and verified, proceed to connect the BMS to the battery pack and activate the system. Follow the steps carefully to ensure proper functionality.
Connection and Activation Video
Video 6: The connection and activating for Daly Smart BMS. This video provides a step-by-step guide on connecting the BMS to the battery pack and activating its software for initial operation.
6. Operating Instructions
The DALY Smart BMS allows for real-time monitoring and parameter modification through a dedicated Bluetooth app or PC software. This enables users to check battery status, adjust settings, and ensure optimal performance.
- Bluetooth App: Connect your smartphone to the BMS via the included Bluetooth module. The app provides a user-friendly interface to view cell voltage, total voltage, temperature, State of Charge (SOC), and cycle count.
- PC Software: Use the UART cable to connect the BMS to a computer. The PC software offers advanced monitoring and configuration options, including detailed parameter settings.
The initial password for setting parameters is 123456. If the capacity setting is not accurate, it may lead to inaccurate SOC remaining power readings.
7. Maintenance
- Regularly check the BMS for any signs of physical damage or loose connections.
- Keep the BMS clean and free from dust and debris.
- Ensure adequate ventilation around the BMS, especially for units with cooling fans, to prevent overheating.
- Monitor battery parameters via the app or PC software to identify any anomalies early.
8. Troubleshooting
If you encounter issues with your DALY Smart BMS, refer to the common errors video below for guidance. Many problems can be resolved by verifying correct wiring and settings.
Common Wiring Errors Video
Video 7: Daly BMS Wiring 5 Common Errors. This video highlights frequent mistakes made during BMS wiring and provides solutions to prevent potential damage or malfunction.
If the BMS is not discharging normally after connection, it may require activation. Activation can typically be done by connecting the charger or by pressing an activation button on the power board (if applicable).
9. Warranty and Support
DALY offers 24-hour one-on-one customer service and lifetime technical support for its products. For any inquiries, technical assistance, or warranty claims, please contact DALY customer service.
If you require a customized BMS or are placing a bulk order, please feel free to contact DALY directly.
