DALY Smart BMS LiFePo4 4S 12V 250A User Manual

1. Introduction

The DALY Smart BMS (Battery Management System) is designed for LiFePo4 4S 12V battery packs, offering comprehensive protection and monitoring capabilities. This programmable BMS features a Bluetooth module for wireless communication with Android or iPhone applications, allowing users to manage and monitor battery status in real-time. It supports both charging and discharging through a common port, ensuring efficient and safe battery operation.

This manual provides detailed instructions for the proper installation, operation, and maintenance of your DALY Smart BMS to ensure optimal performance and longevity of your battery system.

Figure 1: DALY Smart BMS with Bluetooth Module and App Interface

2. Principales caractéristiques

• Capacité de courant élevée : Supports up to 250A continuous discharge and 125A charge current, suitable for demanding applications.
• Programmable Protections: Features adjustable over-charge, over-discharge, over-current, and temperature protection limits.
• Connectivité Bluetooth : Integrated Bluetooth module for real-time monitoring and parameter settings via mobile app (iOS & Android).
• Conception de port commune : Utilizes a single port for both charging and discharging, simplifying wiring.
• Accurate SOC Calculation: Precise State of Charge (SOC) calculation with automatic learning function.
• Voltage Équilibrage : High detection precision for voltage balancing across cells.
• Protection contre les basses températures lors de la charge : Protects the battery from charging at temperatures below -1°C.
• Fonctions de protection complètes : Comprend une protection contre les survolstage, short-circuit, and dust.

Figure 2: DALY Smart BMS Protection Functions

3. Contenu du colis

Vérifiez que tous les éléments sont présents dans l'emballage avant de procéder à l'installation :

• DALY Smart BMS (1 unit)
• Balance Wires (1 set)
• Bluetooth Module (1 unit, for Mobile APP IOS & Android)
• UART Cable (1 unit, for PC screen connection)
• English Version Wiring Manual (1 copy)

Figure 3: DALY Smart BMS Package Contents

4. Produit terminéview

The DALY Smart BMS features a robust design with efficient heat dissipation and a clear interface for connections. Understanding its components is crucial for proper installation and operation.

Figure 4 : Vue éclatée View of DALY Smart BMS Components

Les principaux composants comprennent :

• Dissipateurs thermiques : Two-wheels style and wave style heatsinks for effective thermal management.
• High Current Board: Designed with a 3mm thick pure copper port for high current applications.
• DALY BMS PCBA: The main printed circuit board assembly.
• Thermally Conductive Silica Gel: Enhances heat transfer.
• Pure Aluminum Heatsink: Additional heatsink for optimal cooling.

5. Configuration et installation

Proper installation is critical for the safe and effective operation of your DALY Smart BMS. Please follow these steps carefully.

5.1 Instructions de câblage

1. Before connecting the BMS, ensure all balance wires are correctly welded to your battery pack.
2. Mesurer le voltage between adjacent balance cables. This should approximate the nominal voltage of a single battery string to confirm correct wiring.
3. Connect the balance wires to the BMS balance port. Ensure the black wire (B-) is connected first, followed by the red balance wires in ascending order.
4. Connect the main negative terminal of the battery pack (B-) to the B- terminal on the BMS.
5. Connect the main positive terminal of the battery pack (B+) to the P+ terminal on the BMS.
6. Connect your load/charger to the P- terminal on the BMS and the B+ terminal of the battery pack.
7. Plug in the NTC temperature sensor and the Bluetooth module into their respective ports on the BMS.

Figure 5: DALY Smart BMS Wiring Diagram

5.2 Activation du BMS

After all connections are made, activate the Smart BMS by pressing the activation button on the BMS or by charging the battery pack. The internal resistance of the BMS should be approximately 0Ω (multimeter deviation 0.1Ω indicates conduction).

5.3 Installation de l'application mobile

Download the "Smart BMS" application from your device's app store (Huawei AppGallery or Apple App Store). This app allows you to monitor and configure your BMS wirelessly via Bluetooth.

6. Fonctionnement

Once installed and activated, you can operate and monitor your DALY Smart BMS using the mobile application or PC software.

6.1 Bluetooth Connection and Monitoring

1. Open the "Smart BMS" app on your mobile device.
2. The app will scan for available Bluetooth devices. Select the corresponding device name (e.g., DL-XXXXXXXX) to connect.
3. Upon successful connection, the app will display real-time battery parameters such as total voltage, current, State of Charge (SOC), and individual cell voltaget.

Figure 6: Real-time Battery Data Monitoring via Mobile App

6.2 Réglages des paramètres

The Smart BMS app allows you to customize various protection parameters. For the first power-on, it is essential to set the actual battery capacity. The initial password for parameter settings is 123456.

You can adjust settings such as:

• Cellule survoléetage et sous-voltage limites de protection.
• Total pack over-voltage et sous-voltage limites de protection.
• Charge and discharge over-current protection.
• High and low temperature protection for charging and discharging.
• Battery type (e.g., Li-ion, LiFePo4) and rated capacity.

Refer to the app interface for a complete list of adjustable parameters. Always consult your battery manufacturer's specifications before modifying any parameters.

6.3 Étalonnage automatique

The BMS features an automatic calibration function. If the battery is charged until the voltage reaches a high level 2 alarm, the battery parameters will be automatically calibrated.

6.4 PC Host Computer Software

For advanced monitoring and configuration, connect the BMS to a computer using the provided UART cable. Open the host computer software to view detailed battery status, logs, and adjust parameters. The PC software provides a comprehensive interface for in-depth analysis and control.

7. Spécifications

The following table outlines the technical specifications for the DALY Smart BMS LiFePo4 4S 12V 250A model:

Figure 7: DALY Smart BMS Specifications and Dimensions

8. Dépannage

If you encounter issues with your DALY Smart BMS, consider the following general troubleshooting steps:

• Pas d'alimentation/Pas de sortie : Check all wiring connections for looseness or incorrect polarity. Ensure the BMS has been properly activated. Verify the battery pack voltage se situe dans la plage opérationnelle.
• Problèmes de connexion Bluetooth : Ensure the Bluetooth module is securely connected to the BMS. Restart the mobile app and your device's Bluetooth. Confirm the BMS is powered on.
• Lectures incorrectes : Double-check balance wire connections and ensure they are properly seated. If using the app, refresh the data.
• Surprotection déclenchée : If the BMS frequently triggers over-charge, over-discharge, or over-current protection, review your battery pack's specifications and adjust the BMS parameters accordingly. Ensure your load and charger are within the BMS's rated limits.
• Alarmes de température : Verify the NTC temperature sensor is correctly installed and in contact with the battery cells. Ensure the battery is operating within its safe temperature range.

For persistent issues, refer to the detailed wiring manual included in your package or contact DALY customer support.

9. Entretien

To ensure the longevity and optimal performance of your DALY Smart BMS and battery pack, follow these maintenance guidelines:

• Inspection régulière : Periodically inspect all wiring connections for signs of wear, corrosion, or looseness. Ensure the BMS is securely mounted.
• Propreté: Keep the BMS free from dust, dirt, and moisture. Use a dry, soft cloth for cleaning. Avoid using solvents or abrasive cleaners.
• Gestion de la température : Ensure the BMS and battery pack are operated within their specified temperature ranges. Adequate ventilation is crucial to prevent overheating.
• Mises à jour logicielles : Check for periodic updates to the Smart BMS mobile application or PC software to benefit from new features and bug fixes.
• Paramètre Review: Parfois review your BMS parameters to ensure they are still appropriate for your battery pack's condition and usage patterns.

10. Garantie et assistance

DALY products are manufactured to high-quality standards. For warranty information, please refer to the documentation provided with your purchase or contact your retailer. Keep your proof of purchase for warranty claims.

For technical support, assistance with installation, or troubleshooting, please contact DALY customer service through their official webVous pouvez également contacter le service client via le site web ou les coordonnées figurant sur l'emballage de votre produit. Lorsque vous contactez le service client, veuillez vous munir du numéro de modèle de votre produit et des informations relatives à votre achat.