Daly LiFePO4 BMS 4S 12V Instruction Manual

Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of the Daly LiFePO4 BMS (Battery Management System) for 4-series 12V LiFePO4 battery packs. This BMS is designed to protect your battery pack from various electrical issues, ensuring its longevity and safe operation.

The Daly DL4S BMS is suitable for 4S 12V 14.6V LiFePO4 battery packs, including common capacities such as 50Ah, 100Ah, 200Ah, 280Ah, and 500Ah, often used in solar systems and other applications.

The Daly BMS is designed for a wide range of applications, including electric scooters, e-bikes, tourist vehicles, electric tricycles, low-speed EVs, emergency UPS, solar street lights, and RV & home energy storage systems.

Негизги өзгөчөлүктөрү

• Комплекстүү коргоо: Includes over charge protection, over discharge protection, over current protection, short-circuit protection, and temperature protection.
• Жогорку сапаттагы компоненттер: Manufactured with top-quality (A-level) protective integrated circuit ICs from Seiko of Japan and high voltage resistance, low inner resistance power MOSFETs.
• Натыйжалуу жылуулук диссипациясы: Features a heat sink and, for higher current models, an active fan for effective cooling.
• Клетка балансы: Integrated IC with power balancing function ensures each cell is maintained optimally.
• Күчтүү дизайн: PCB uses high anti-corrosion, high water resistance, high impedance ESD conformal coating.
• Суу өткөрбөйт жана бышык: Full sealed, waterproof, dustproof, and shockproof design (Patent No: ZL 2018 2 1243978.5).
• Төмөн энергия керектөө: The entire device consumes less than 50uA.

The Daly BMS features a fully sealed, waterproof, dustproof, and shockproof design, protected by patent ZL 2018 2 1243978.5.

Higher current models of the Daly BMS incorporate an active heat dissipation fan to maintain optimal operating temperatures.

The BMS utilizes pure copper for critical connections, ensuring good conductivity and reduced heat generation.

Орнотуу жана орнотуу

Proper installation is crucial for the safe and effective operation of your Daly LiFePO4 BMS. Please follow these steps carefully.

Wiring Diagram for Common Port

Detailed wiring diagram for connecting the Daly BMS to a 4S LiFePO4 battery pack, charger, and motor/load.

Орнотуу кадамдары:

1. Initial Connection Precaution: Do NOT insert the balance wires into the BMS before connecting them to the battery cells. Ensure all battery connections are correct first.
2. Connecting Balance Wires:
   1. Start with the thin black balance wire (B-).
   2. Connect the second wire (thin red wire) to the positive pole of the first battery cell.
   3. Continue connecting each subsequent thin wire to the positive pole of each cell in ascending order (e.g., 3rd wire to 2nd cell positive, and so on) until the last cell's positive pole (B+).
3. Тtage Verification (Crucial Step):
   1. Before inserting the balance connector into the BMS, measure the voltage between two adjacent metal terminals on the back of the connector using a multimeter.
   2. LiFePO4 батареялары үчүн, тtage between adjacent terminals should be between 2.0V and 3.6V. (For Li-ion, 3.0V-4.2V; for LTO, 1.5V-2.75V).
   3. Эгерде томtages are correct, proceed to insert the connector into the BMS.
4. BMS Functionality Check:
   1. Adjust your multimeter to the buzzer position (continuity test).
   2. Measure the internal resistance between the B- and P- terminals of the BMS.
   3. If the internal resistance is 0 (multimeter beeps), the BMS is functioning correctly. If not, do not proceed with welding and contact customer support.
5. Main Negative Connection: The final step is to connect the thick blue wire (B-) to the total negative pole of the battery pack.

Post-Wiring Verification:

After all wiring is complete, measure the following voltages:

• Тtage between B+ and B- (total battery pack voltagжана).
• Тtage between B+ and P- (output voltage from BMS).

Бул эки томtage readings should be equal. If they are, your BMS is working normally and ready for use. If not, recheck your wiring sequence carefully.

The balance cable features a convenient buckle with a reverse snap mechanism to ensure a tight and secure connection, preventing accidental disconnections.

The wires provided are designed to be safe and reliable, featuring strong flame retardancy and good flexibility for wiring at various angles.

The BMS includes reasonable screw positioning holes for easy and secure installation. Dimensions for a 100A model are shown as an example.

Операция

Once installed and verified, the Daly LiFePO4 BMS operates automatically to manage and protect your battery pack. It continuously monitors cell voltages, current, and temperature.

• Ашыкча кубаттан коргоо: The BMS will stop charging if any cell voltage exceeds the over charge detect voltage (3.75V ± 0.05V). Charging will resume when the voltage drops to the release voltage (3.55V ± 0.05V).
• Ашыкча разряддан коргоо: The BMS will cut off discharge if any cell voltage drops below the over discharge detect voltage (2.2V ± 0.1V). Discharge will resume when the voltage rises to the release voltage (2.3V ± 0.1V).
• Ашыкча ток коргоо: If the discharge current exceeds the specified limit, the BMS will activate overcurrent protection.
• Кыска туташуулардан коргоо: In case of an external short circuit, the BMS will immediately cut off the circuit to prevent damage.
• Температураны коргоо: The BMS monitors the temperature during both charging and discharging to prevent operation outside safe temperature ranges (-20°C to 70°C working, -40°C to 80°C storage).
• Balance Function: The integrated balance function helps equalize the voltage across all cells, extending battery life. Balancing activates when cell voltage 3.5 В жетет.

Техникалык тейлөө

The Daly LiFePO4 BMS is designed for low maintenance. However, periodic checks can help ensure optimal performance and longevity.

• Визуалдык текшерүү: Periodically inspect the BMS and all wiring for any signs of damage, corrosion, or loose connections.
• Тазалык: Keep the BMS clean and free from dust and debris. For models with active cooling fans, ensure the fan vents are not obstructed.
• Экологиялык шарттар: Ensure the BMS operates within its specified working temperature range (-20°C to 70°C) and is stored within its storage temperature range (-40°C to 80°C).
• Суу өткөрбөс бүтүндүгү: While the BMS is waterproof, avoid prolonged submersion or exposure to harsh chemicals.

Проблемаларды чечүү

If you encounter issues with your battery pack or BMS, refer to the following common troubleshooting steps:

• BMS Not Activating / No Output Voltage:
  • Recheck all wiring connections, especially the balance wires and main power cables (B- and P-). Refer to the "Setup and Installation" section.
  • Verify cell voltages. If any cell is significantly over-discharged or overcharged, the BMS may remain in a protected state.
  • Ensure the total battery pack voltage is within the operational range.
  • Perform the BMS functionality check (internal resistance between B- and P-) as described in the installation steps.
• Батарея топтому заряддалбай жатат:
  • Check the charger connection and ensure it is functioning correctly.
  • Verify that no cells are in an overcharge protection state.
  • Check for any temperature protection activation.
• Battery Pack Not Discharging / Low Power Output:
  • Check the load connection.
  • Verify that no cells are in an over-discharge protection state.
  • Check for overcurrent or short-circuit protection activation. Reduce the load if it exceeds the BMS's continuous discharge current rating.
  • Check for any temperature protection activation.
• Unbalanced Cell Voltages:
  • The BMS has an automatic balance function. Allow time for it to balance the cells.
  • If significant imbalance persists, ensure all balance wires are securely connected and not damaged.

Эгерде көйгөйдү чечүү кадамдары көйгөйдү чечпесе, кошумча жардам алуу үчүн кардарларды колдоо кызматына кайрылыңыз.

Техникалык шарттар

The Daly LiFePO4 BMS is available in various current ratings. The following table provides general specifications for the 4S LiFePO4 models.

Detailed product parameters for Daly 4S LiFePO4 BMS models, covering discharge, charge, protection, balance, and temperature specifications.

Physical Dimensions (Examples):

Examples of different Daly BMS current ratings with their corresponding dimensions.

• 15A/20A: 34*59*9mm
• 30A/40A: 48*75*9mm
• 50A/60A: 61*80*16mm
• 80A: 66*150*19mm
• 100A: 65*166*24mm
• 120A/150A: 95*212*20mm
• 200A/250A: 130*221*32mm
• 300A/400A/500A: 130*257*52mm

Сертификаттар: CE, FCC, RoHS, PSE, ISO.

The Daly BMS has obtained various standard certifications, including CE, FCC, RoHS, PSE, and ISO, ensuring product quality and safety.

Колдонуучу сунуштар

• Bluetooth байланышы: While this manual focuses on the standard 4S BMS, some Daly BMS models offer Bluetooth communication for advanced monitoring. If you require this feature, ensure you purchase a model specifically designed with Bluetooth capabilities.
• Тtage Шайкештик: Always double-check that the BMS matches your battery pack's series configuration (e.g., 4S for 12V LiFePO4) and chemistry (LiFePO4).
• Кесиптик орнотуу: If you are unsure about any wiring steps, it is highly recommended to seek assistance from a qualified professional to avoid damage to the BMS or battery pack.

Кепилдик жана колдоо

For warranty information, technical support, or any questions not covered in this manual, please contact the seller or manufacturer directly. Refer to your purchase documentation for specific contact details.

If you have any questions regarding the wiring or operation, please contact our customer service for support.