1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your DALY Smart BMS 16S 60V 30A with 1A Parallel Module. This system is designed for 3.7V Lithium 18650 battery packs used in home energy storage and similar applications. Please read this manual thoroughly before use to ensure proper function and safety.
2. Safety Information
Always observe the following safety precautions:
- Ensure all connections are correct before applying power. Incorrect wiring can cause damage to the BMS, battery, or connected equipment.
- Wear appropriate personal protective equipment (PPE) when handling batteries and electrical components.
- Do not short-circuit the battery terminals.
- Keep the BMS and battery pack away from water, heat, and flammable materials.
- Only use the DALY parallel module with DALY BMS units of the same type and string count.
- If any abnormal behavior is observed, disconnect power immediately and consult a qualified technician.
3. Product Overview and Components
The DALY Smart BMS is a Battery Management System designed to protect and manage lithium battery packs. It includes a parallel module for enhanced protection in parallel battery configurations.
Figure 3.1: Overview of the DALY Smart BMS and its parallel module. The main BMS unit is red with two circular fan-like designs, connected to a smaller red parallel module via a multi-colored ribbon cable. Main power cables are attached to the BMS.
Key components included in the package:
- Smart BMS with CAN communication function
- Balance wire harness
- NTC (Negative Temperature Coefficient) thermistor
- Bluetooth module
- 1A matched parallel module
- Communication cable
Figure 3.2: Contents of the DALY Smart BMS package, showing the BMS unit, parallel module, wiring, and documentation neatly arranged in a cardboard box.
4. Specifications
| Feature | Value |
|---|---|
| Model | 16S 60V 30A Li-ion |
| Product Dimensions (BMS) | Approximately 66 x 128 x 13 mm (Width x Length x Thickness) |
| Parallel Module Dimensions | 63 x 41 x 14 mm (Width x Length x Thickness) |
| Current Limit (Parallel Module) | 1 A |
| Operating Temperature | -20℃ to 70℃ |
| Communication Interfaces | UART, RS485, CAN, Bluetooth |
| Battery Type Compatibility | Rated 3.7V Lithium 18650 (Li-ion) |
| Communication Wire Length | 300mm (22AWG) |
Figure 4.1: Diagram illustrating the dimensions of the 16S 30A BMS and the 1A parallel module, along with a visual representation of their combined use.
5. Setup and Installation
Careful wiring is essential for the correct and safe operation of the BMS and parallel module. Follow these steps precisely:
- Prepare Battery Pack: Ensure your lithium battery pack consists of 16 series cells (16S) with a nominal voltage of 60V. The DALY BMS + DALY parallel module must match the battery pack's type and string count exactly.
- Connect BMS to Battery: First, connect the main B- (negative) terminal of the BMS to the total negative terminal of your battery pack. Then, connect the balance wires from the BMS to each individual battery cell, starting from the lowest voltage cell (B0) up to the highest (B16). Ensure all balance lines are correctly wired to each battery cell before proceeding.
- Connect Parallel Module to BMS: The 1A parallel module has one wire outlet with 5 wires in total. Combine these 5 wires and connect them to the corresponding DO port of the BMS. Do not connect the parallel module to the BMS before all balance lines wire each battery cell.
- Connect Load/Charger: Connect your load and charger to the P- (negative) and B+ (positive) terminals of the BMS as per the wiring diagram.
Figure 5.1: Detailed wiring diagram for the 1A parallel module with the DALY Smart BMS. It shows connections for the battery pack (B- to B+), the parallel module to the BMS's sampling cable port, and the main power connections (P- and B-).
The DALY parallel module is specifically designed for parallel lithium packs. It limits mutual high charging current caused by internal resistance and voltage differences between parallel lithium batteries during charging. This combination allows for safe and easy achievement of higher voltage for electrical devices.
Figure 5.2: Illustration of two battery packs connected in parallel, each managed by a DALY BMS and parallel module, demonstrating how the system integrates into a larger energy storage setup.
6. Operating Instructions
The DALY Smart BMS offers intelligent monitoring and control via its communication functions.
6.1 Bluetooth Communication
The BMS is equipped with a Bluetooth module, allowing you to monitor battery parameters and adjust settings using the DALY BMS app on your smartphone or tablet.
- Download App: Download the official DALY BMS app from your device's app store.
- Connect Bluetooth: Ensure the Bluetooth module is connected to the BMS. Open the app and search for available BMS devices. Select your BMS to connect.
- Monitor Parameters: Once connected, you can view real-time battery parameters such as total voltage, individual cell voltages, charge/discharge current, temperature, and State of Charge (SOC).
- Adjust Settings: The app allows for specific parameter adjustments in designated areas. Refer to the app's internal help or the DALY website for detailed guidance on advanced settings.
Figure 6.1: Screenshot of the DALY BMS mobile application interface, showing real-time battery parameters like total voltage, current, State of Charge (SOC), and individual cell voltages, along with fault alarms.
6.2 Parallel Module Operation
The parallel module is triggered under specific conditions to manage current flow between parallel battery packs:
- When the overcharge current reaches warning level 2.
- When a built-in or preset valve value is reached.
The parallel module's release state is for discharge. It helps prevent high charging currents between parallel packs due to voltage differences.
7. Maintenance
To ensure the longevity and optimal performance of your DALY Smart BMS and battery pack, consider the following maintenance guidelines:
- Regular Inspection: Periodically check all wiring connections for tightness and signs of corrosion or damage.
- Cleanliness: Keep the BMS unit and battery pack clean and free from dust and debris. Use a dry, soft cloth for cleaning.
- Temperature Control: Operate the system within the specified operating temperature range (-20℃ to 70℃) to prevent damage and ensure efficiency.
- Firmware Updates: Check the DALY website or app for any available firmware updates for your BMS to ensure you have the latest features and bug fixes.
8. Troubleshooting
This section addresses common issues you might encounter. For more complex problems, contact DALY support.
| Problem | Possible Cause | Solution |
|---|---|---|
| BMS not powering on / no output | Incorrect wiring, loose connections, or battery voltage too low. | Verify all wiring according to the diagram. Check battery voltage. Ensure the main power switch (if present) is on. |
| Bluetooth connection issues | Bluetooth module not connected, out of range, or app issues. | Ensure the Bluetooth module is securely connected to the BMS. Move closer to the BMS. Restart the app and try reconnecting. |
| Parallel module not functioning as expected | Incorrect connection, incompatible BMS, or parameters not met. | Confirm the parallel module is correctly connected to the BMS's DO port. Ensure the BMS and parallel module are of compatible types and string counts. Check app settings for parallel module parameters. |
| BMS trips or cuts off at lower than expected current (e.g., 42A for a 60A unit) | Overcurrent protection threshold set too low, or unit is a lower amperage variant. | Verify the specific amperage rating of your BMS model. Check the overcurrent protection settings in the DALY BMS app and adjust if necessary, ensuring it aligns with your battery pack's capabilities. |
9. Warranty and Support
For warranty information, please refer to the documentation provided with your purchase or contact your retailer. DALY is committed to customer satisfaction.
Customer Support
If you require technical assistance, have questions about customization, or need to place a bulk order, please contact DALY customer service. You can find contact information on the official DALY website or through the DALY Store on Amazon.
