1. Introduction
The DALY Smart Lifepo4 BMS (Battery Management System) is designed for advanced protection and management of lithium battery packs. This M-series Smart BMS offers a comprehensive upgrade with professional resistance to high current, suitable for 3-24S Li-Ion/LiFePO4 battery configurations. It is engineered for various high-current scenarios, ensuring optimal performance and longevity for your battery system.
Product Overview: DALY M-Series Smart BMS features and applications.
2. Key Features
- Versatile Application: Suitable for large single cell/cylindrical cell/soft-packed cell battery packs, meeting the needs of various application scenarios including aerial work vehicles, ship energy storage, ATVs, floor sweepers, RV energy storage, tour cars, low-speed vehicles, golf carts, and forklifts.
- Advanced Thermal Design: Low internal resistance components and advanced thermal design technology ensure good current flow performance and low temperature rise.
- Multiple Communication Functions: Supports CAN, RS485, dual UART communication interfaces, and rich expansion applications.
- Smart Monitoring: Self-developed APP for mobile phones acts as your personal lithium battery steward, allowing you to view various data at a glance (SOC, Voltage, Current, Temperature, Alarms, Cycle number).
- Cloud Management: DALY's official IoT platform provides remote and batch intelligent management of BMS. Battery data is saved in the cloud, and multi-level sub-accounts can be opened and the BMS can be remotely upgraded through the APP + DALY Cloud.
- High Precision Real-time Monitoring: Equipped with a high-end MCU chip, offering voltage detection accuracy of ±10-15mV and short circuit protection of 10-500uS, with SOC error <5%.
- Low Power Consumption: Features a sleep mode current of <600uA and a working current of <20mA, ensuring good energy-saving performance.
- Comprehensive Protection: Includes overcharge protection, over-discharge protection, overcurrent protection, short circuit protection, temperature protection, anti-vibration, electrostatic protection, and is waterproof.
- Passive Balancing: 100mA passive balancing helps extend lithium battery life, increasing balancing efficiency by more than 3 times compared to conventional BMS with 30mA passive balancing.
- High Power Pre-charging: Effectively avoids false triggering of protection caused by high current at startup and unsuccessful power-ups.
3. Specifications
Product size tolerance range ±0.5mm.
Dimensions of the DALY Smart BMS (e.g., 150A model: 164mm x 66mm x 21mm).
| Attribute | Value |
|---|---|
| Brand Name | DALY |
| Type | LIFEPO4 Battery BMS |
| Handware or Smart | SMART BMS |
| Balance Function | Passive Balanced BMS |
| Charge and Discharge Port | Common Port BMS |
| Charging Current | 100A (up to 200A for some models) |
| Current Range | 150-200A (Discharge) |
| Battery Series | LiFePO4 Li-ion LFP 4S ~24S |
| Nominal Voltage | 12V 24V 48V (3.2V/3.7V rated lithium battery) |
| Communication Ways | Bluetooth BT/UART |
| Usage Scenario | Power BMS, Energy Storage BMS |
| Function | Overcharge Protection, Over Discharge Protection, Overcurrent Protection, Short Circuit Protection |
| Certification | CE, FCC, WEEE |
| High-concerned chemical | None |
| Gift | Bluetooth and NTC and cable |
Detailed Specification Parameters (Note: Values may vary by specific model/current rating).
4. Packing List
The standard package includes the following items. Note: The packing list takes 24S 150A BMS as an example; actual contents may vary slightly based on your specific order.
Example Packing List for 24S 150A BMS.
- BMS Unit (x1)
- Manual (x1)
- B-P- Output line (Gift) (x1)
- WiFi Module (Gift) (x1)
- Cables (x1)
- NTC (x1)
- CAN/485 5pin (x1)
5. Setup and Installation
Follow these 3 easy steps for proper installation and wiring of your DALY Smart BMS. Ensure all connections are secure and correct before activation.
Wiring Diagram for DALY Smart BMS.
- Solder the sampling cables: The first cable in black in the sampling cable set is connected to the negative terminal of the battery, the second cable (red) is connected to the positive terminal of the first string of batteries, and the third cable (red) is connected to the positive terminal of the second string of batteries. Continue this pattern until all cables are connected.
- Check the cables: After connecting the cables, measure the voltage between two adjacent cables starting from the header to make sure there are no wrong connections or missing connections.
- Connect the output wires: Connect the B- wire of BMS to the total negative terminal of the battery pack, and then plug the sampling cable to BMS. After activating the BMS, make sure that the voltage (battery voltage) between B+ & B- and the voltage between P+ & P- are consistent.
Activating the BMS
The BMS is automatically activated when used for the first time. If the BMS is dormant, it can be activated in 4 ways:
Before activating the BMS, please make sure that the BMS, the cable, the battery are connected correctly, and the NTC is connected with the BMS.
Methods to Activate the DALY Smart BMS.
- Use key switch.
- Press buttons on Bluetooth module or SOC indicator.
- Using CAN/RS485 communication or Bluetooth connect to Mobile APP.
- Charge or discharge the battery.
6. Operating Instructions
Mobile APP Control
The self-developed DALY Smart BMS APP allows you to monitor your battery system in real-time and adjust various parameters. It supports both iOS and Android systems and automatically switches with the system language. A Bluetooth module is required to connect the BMS to the APP.
DALY Smart BMS Mobile APP Interface.
Cloud Manager (IoT Platform)
For remote and batch intelligent management, utilize the DALY Cloud Lithium Battery IoT Platform. This platform allows you to transfer data over the internet to a cloud server. The BMS must be connected to a Bluetooth module, WiFi module, or 4G module to upload data to the cloud server through the mobile APP or a router.
DALY Cloud IoT Platform Connectivity Diagram.
Upper Computer Software
Connect to the upper computer through a communication wire (UART/RS485/CAN) to adjust multiple protection values such as overcharge protection, over-discharge protection, over-current protection, temperature protection, and balancing parameters. This provides a detailed interface for setting and reading parameters.
Upper Computer Software for Parameter Setting and Reading.
7. Maintenance
- Environmental Protection: The DALY Smart BMS features moisture-proof, anti-vibration, and anti-oxidation properties. However, it is recommended to install the BMS in a dry, stable environment to maximize its lifespan.
- Regular Checks: Periodically check all wiring connections for tightness and integrity to prevent loose connections that could affect performance or safety.
- Software Updates: Keep your mobile APP and upper computer software updated to the latest versions to benefit from new features, improvements, and bug fixes.
- Temperature Management: While the BMS has advanced thermal design, ensure adequate ventilation around the battery pack and BMS, especially during high current operation, to maintain optimal operating temperatures.
8. Troubleshooting
- BMS Not Activating: If the BMS does not activate, ensure all battery and sampling cables are correctly connected and the NTC is properly installed. Try activating using one of the four methods described in the 'Setup and Installation' section (key switch, Bluetooth/SOC button, APP, or charging/discharging the battery).
- Inconsistent Voltage Readings: Double-check all sampling cable connections. Measure the voltage between adjacent cables to identify any discrepancies.
- Communication Issues: Ensure your Bluetooth, WiFi, or CAN/RS485 modules are correctly connected and powered. Verify that the mobile APP or upper computer software is properly configured and updated.
- Over-protection Triggered: If the BMS frequently triggers protection (e.g., overcharge, over-discharge, overcurrent), review your battery pack's specifications and the BMS parameter settings in the APP or upper computer software. Adjust parameters as necessary within safe limits.
9. User Tips
- Battery Compatibility: Always ensure the BMS model (e.g., 4S, 8S, 16S, 24S) and current rating (e.g., 150A, 200A) are compatible with your specific battery pack voltage and capacity (e.g., 12.8V 280Ah). Incorrect matching can lead to malfunction or damage.
- Initial Setup: Take extra care during the initial wiring process. A multimeter is essential to verify correct voltage readings between cell groups before connecting the main power.
- Monitoring: Regularly use the mobile APP or upper computer software to monitor your battery's health and performance. This can help identify potential issues early.
10. Warranty and Support
For any technical assistance, warranty claims, or support inquiries, please contact DALY BMS Factory Store directly through their official channels. Refer to your purchase documentation for specific warranty terms and contact information.
