1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of the DALY Smart 13S BMS (Battery Management System) 48V 40A. This BMS is designed to protect and manage Li-ion lithium battery packs, ensuring their safe and efficient operation. It features a WiFi module and CAN/RS485 communication for advanced monitoring and control.
An image displaying the DALY Smart 13S BMS, highlighting its compact dimensions of 123mm length, 65mm width, and 14mm thickness.
2. Key Features
The DALY Smart 13S BMS offers a range of features designed for optimal battery management and protection:
- Multiple Protection: Includes overcharge, overdischarge, overcurrent, short circuit, temperature, and waterproof protection to safeguard your battery pack.
- Smart Monitoring: Integrated WiFi module enables remote monitoring via a smartphone app and Internet connection. The system sends alerts for any detected battery abnormalities.
- Advanced Communication: Supports CAN, RS485, and dual UART communication interfaces, allowing for versatile expansion and integration.
- Parallel Connection: Designed to support the parallel connection of various battery packs, facilitating safe system expansion.
- Pre-charging Function: Features a pre-charging function to ensure smooth and easy starting of connected loads.
- Passive Equalization: Incorporates a 100mA passive equalization current for balanced cell performance and extended battery life.
- Optimized Design: Characterized by a smaller size, low temperature rise during operation, a clear working condition indicator, and consistent charge/discharge current management.
An infographic illustrating the comprehensive upgrades and key features of the DALY Smart BMS, such as smart solutions, waterproof design, support for parallel connections, compact size, low temperature operation, reduced power consumption, pre-charging capability, battery pack temperature protection, and 100mA passive balancing.
3. Technical Specifications
Below are the detailed technical specifications for the DALY Smart 13S BMS 48V 40A:
A table detailing the technical specifications of the DALY Smart BMS, including electrical parameters like discharge current, overcharge and overdischarge current/voltage, charge voltage, model number, physical size, wire gauges, and weight.
| Parameter | Value |
|---|---|
| Product Type | Li-ion 13S 40A common port with balance |
| Discharge Current | 40A |
| Overdischarge Current | 60±1.2A |
| Charging Current | 40A |
| Overcharge Current | 60±1.2A |
| Overcharge Voltage | 4.25±0.05V (Can be set) |
| Overdischarge Voltage | 2.7±0.05V (Can be set) |
| Charge Voltage | 54.6V |
| Model | R24K (11~24S) |
| Dimensions (L x W x H) | 123 x 65 x 14 mm (4.84 x 2.55 x 0.55 inches) |
| Output Wire | 10AWG/100mm |
| Cable | 24AWG/450mm |
| Weight | 170~210g |
| Input Voltage | 48 Volts |
| Output Voltage | 48 Volts |
| UPC | 784868224999 |
| Mfr Part Number | Li-ion-smart-k |
4. Setup and Installation
The following steps outline the installation and wiring process for the DALY Smart BMS. Always ensure power is disconnected from the battery pack and any connected loads before beginning installation to prevent electrical hazards.
A clear wiring diagram illustrating the three-step installation process for the DALY K series BMS, demonstrating connections for the overall positive electrode (B+), overall negative electrode (B-), sampling cables for individual battery strings, and connections to the electric machine, load, and recharger.
Wiring Steps:
- Step 1: Solder Sampling Cables. The first black cable in the sampling cable set connects to the negative terminal of the battery. The subsequent red cables connect to the positive terminal of each battery string sequentially (e.g., second red cable to the positive terminal of the first string, third red cable to the positive terminal of the second string, and so on). Continue this pattern until all sampling cables are connected to their respective positive terminals.
- Step 2: Check the Cables. After connecting all sampling cables, use a multimeter to measure the voltage between two adjacent cells, starting from the header. Ensure that the voltage readings are consistent and that there are no wrong connections or missing connections.
- Step 3: Connect Output Wires. Connect the B- wire of the BMS to the total negative terminal of the battery pack. Then, carefully plug the sampling cable into the designated port on the BMS. After activating the BMS, verify that the total battery voltage measured between B+ and B- matches the voltage measured between P+ and P- (the charge/discharge terminals).
5. Operation
The DALY Smart BMS can be monitored and controlled via a dedicated smartphone application and a Cloud Manager platform, providing comprehensive oversight of your battery system.
Smartphone App Monitoring:
With the integrated WiFi module, you can remotely monitor your lithium batteries through the Internet using the "SMART BMS" smartphone app. The app allows you to view and set various battery parameters, including State of Charge (SOC), voltage, electric current, temperature, and cycle number. It also provides alerts for any detected battery abnormalities, ensuring timely intervention.
A visual representation of the DALY Smart BMS mobile application interface, showcasing its ability to display real-time battery parameters such as State of Charge (SOC), voltage, electric current, temperature, and alarm notifications. The app supports iOS and Android and multiple languages.
The app supports both iOS and Android operating systems and automatically adjusts to your system's language settings. Both Bluetooth and WiFi modules are essential for enabling full remote monitoring functionalities.
Cloud Manager Platform:
For comprehensive management and data logging, the BMS can connect to a Cloud Manager - Lithium Battery IoT Platform. This platform allows for detailed analysis of battery performance, historical data tracking, and remote oversight, which is particularly useful for larger or distributed battery systems.
This video provides a visual overview of the DALY K series Smart BMS, demonstrating its intelligent features, comprehensive protection capabilities, and suitability for various battery applications, including electric vehicles and energy storage systems. It illustrates aspects like smart monitoring, parallel connection support, and robust design.
6. Maintenance and Protection
The DALY Smart BMS is engineered with multiple protection features to ensure the longevity, safety, and optimal performance of your battery pack. Regular checks and understanding these features are key to proper maintenance.
Protection Features:
- Overcharge Protection: Prevents individual cells from being charged beyond their safe voltage limit, which can lead to cell degradation or damage.
- Overdischarge Protection: Protects cells from being discharged below their safe voltage limit, preventing irreversible damage and extending battery cycle life.
- Overcurrent Protection: Safeguards the battery and connected devices against excessive current during both charging and discharging cycles.
- Short Circuit Protection: Automatically disconnects the battery from the load in the event of a short circuit, preventing immediate damage and potential fire hazards.
- Temperature Protection: Continuously monitors the battery temperature and initiates protective measures (e.g., reducing current or shutting down) if temperatures exceed or fall below safe operating ranges.
- Waterproof Protection: The design incorporates features to enhance durability and protect internal components from moisture ingress in various environmental conditions.
Passive Equalization:
The BMS includes a 100mA passive equalization function. This feature works to balance the voltage across individual cells within the battery pack, compensating for minor differences in cell capacity or internal resistance. Effective cell balancing optimizes overall battery performance, maximizes usable capacity, and extends the lifespan of the entire pack.
7. Troubleshooting
If you encounter issues with your DALY Smart BMS, consider the following common solutions before contacting support:
- Bluetooth/WiFi Connection Drops: Ensure the BMS is within optimal range of your smartphone or WiFi router. Check for any physical obstructions or sources of electromagnetic interference. Try restarting both the BMS (if possible) and your monitoring device. Verify that the smartphone app is updated to its latest version.
- App Setup Complexity: For detailed guidance on app configuration, refer to the specific app setup instructions provided with your product or contact DALY customer support for step-by-step assistance. Ensure all physical wiring is correctly completed as per the installation instructions before attempting app configuration.
- BMS Not Activating: Double-check all wiring connections, paying close attention to the B- and sampling cables. Ensure they are securely and correctly attached. Confirm that the battery pack voltage is within the operational range specified for the BMS.
- Abnormal Readings: If you observe inaccurate voltage or temperature readings, verify that the sampling cables are correctly connected to each individual cell. Loose or incorrect connections are a common cause of such discrepancies.
8. Packing List
The standard package for the DALY Smart BMS 13S 48V 40A typically includes the following items. Please check your package contents upon receipt.
An image displaying the typical contents of the DALY Smart BMS package, which includes the K series BMS unit, a user manual, B-P- output line, WiFi module, various cables, NTC temperature sensor, and a CAN/485 5pin connector.
| Item | Quantity |
|---|---|
| K series BMS | 1 |
| Manual | 1 |
| B-P- Output line (gift) | 1 |
| WiFi Module (gift) | 1 |
| Cables | 1 |
| NTC Temperature Sensor | 1 |
| CAN/485 5pin Connector | 1 |
Note: The packing list shown is an example for a 24S 60A BMS and may vary slightly for your specific model. Please refer to your product packaging for exact contents.
9. Warranty and Support
DALY is committed to providing excellent customer service and technical assistance. We offer 24-hour one-on-one customer service and technical support to address any questions or concerns you may have regarding your Smart BMS.
This product is manufactured to high standards and holds ISO, FCC, RoHS, PSE, and CE approvals, ensuring its quality, safety, and compliance with relevant international regulations.
For support, please refer to the contact information provided in your product packaging or visit the official DALY website.