Heltec BMS User Manual: 6S, 7S, 10S Li-Ion/LiFePO4 Battery Management System

1. Introducció

This manual provides essential information for the safe and effective use of your Heltec Battery Management System (BMS). The Heltec BMS is designed to protect and manage various lithium-ion battery configurations, including Li-Ion, LiFePO4, and LTO, for applications such as e-bikes and energy storage systems.

Les característiques clau inclouen:

• Dual Current Options: Available in 30A and 60A models for flexible application.
• Protecció integral: Offers overcharge, over-discharge, overcurrent, and short-circuit protection.
• Smart Balance Function: Passive balanced BMS ensures stable cell voltage across the battery pack.
• Àmplia compatibilitat: Suitable for both power BMS and energy storage BMS scenarios.

2. Notes importants de seguretat

• Always ensure correct polarity and connection sequence when wiring the BMS to the battery pack. Incorrect wiring can cause damage to the BMS, battery, or connected devices.
• This product does not have a temperature control switch. If your application requires external temperature management, ensure it is in place.
• Manipuleu amb cura per evitar danys físics.
• Keep the BMS away from moisture and extreme temperatures.
• Installation should be performed by individuals with appropriate electrical knowledge.

3. Especificacions

3.1. Paràmetres tècnics

3.2. Especificacions generals

4. Configuració i cablejat

Proper wiring is critical for the safe and correct operation of the BMS. Follow the diagrams below carefully for your specific battery configuration (6S, 7S, or 10S).

1. Check Battery Series Sequence: Before connecting the BMS, ensure your battery cells are correctly arranged in series.
2. Connecteu el cablejat: Connect the balance wires and main power wires strictly in accordance with the provided drawing.
3. Verifica les connexions: Double-check all connections for correctness and secure fit before inserting the balance board connector into the BMS.

4.1. Wiring Diagram for 6S 60A 3.7V BMS

4.2. Wiring Diagram for 7S 60A 3.7V BMS

4.3. Wiring Diagram for 10S 60A 3.7V BMS

Note: The 30A versions of the BMS follow similar wiring principles but are rated for lower continuous and overcurrent discharge. Always refer to the specific label on your BMS for exact current ratings and SKU.

5. Funcionament

Once correctly installed, the Heltec BMS operates automatically to manage and protect your battery pack. Its primary functions include:

• Protecció de sobrecàrrega: Prevents individual cells from being charged beyond their safe voltage limit (4.25V).
• Protecció de sobredescàrrega: Stops discharge when cells reach their minimum safe voltage (2.8V) per evitar danys.
• Protecció contra sobreintensitat: Disconnects the load if the discharge current exceeds the specified maximum (100A for 30A models, 200A for 60A models).
• Protecció contra curtcircuits: Immediately cuts off power in the event of a short circuit to prevent damage and fire hazards.
• Passive Balancing: Continuously monitors cell voltages and dissipates excess energy from higher voltage cells to maintain overall pack balance, extending battery life and performance.

No user intervention is typically required for the core protective functions during normal operation.

6. Manteniment

The Heltec BMS is designed for low maintenance. To ensure its longevity and optimal performance:

• Mantenir net: Periodically inspect the BMS and connections for dust or debris. Clean gently with a dry, soft brush if necessary.
• Condicions ambientals: Ensure the BMS operates within its specified temperature range and in a dry environment to prevent corrosion or damage.
• Integritat de la connexió: Occasionally check that all wiring connections are secure and free from corrosion.

7. Solució De Problemes

If you experience issues with your battery pack or BMS, consider the following basic troubleshooting steps:

• Sense potència de sortida:
  • Check all main power connections (Battery-, P-, Battery+, Charge/Discharge+) for secure contact and correct polarity.
  • Verify that the balance wires are correctly connected to each cell and to the BMS.
  • Measure individual cell voltages to ensure no cell is below the over-discharge protection threshold (2.8V). If a cell is too low, the BMS may have cut off power.
  • Check for any signs of short circuit or overcurrent events that might have triggered protection.
• Problemes de càrrega:
  • Ensure the charger is functioning correctly and connected to the appropriate charge/discharge port.
  • Check for overcharge protection activation if cells are already at or near 4.25V.
• Unbalanced Cells:
  • While the BMS has passive balancing, significant cell imbalance might indicate a faulty cell or prolonged storage. Allow the BMS time to balance during charging.

If problems persist after basic checks, it is recommended to consult with a qualified technician or contact Heltec customer support.

8. Consells d'usuari

Based on general best practices for BMS usage:

• Càrrec inicial: After installation, perform a full charge cycle to allow the BMS to balance the cells effectively.
• Monitoritzar el rendiment: If possible, periodically monitor individual cell voltages to ensure the battery pack remains balanced over time.
• Ventilació: Ensure adequate ventilation around the battery pack and BMS, especially during high current draw or charging, to prevent overheating.
• Correct Sizing: Always choose a BMS with current ratings appropriate for your battery pack and application to avoid triggering protection prematurely or damaging the BMS.

9. Garantia i Suport

For technical support, warranty claims, or further assistance, please contact the HeltecTools Store directly.

• Nom de la botiga: HeltecTools Store
• Pàgina d'inici de la botiga: HeltecTools Store on AliExpress
• Product Complaint: If you need to report an issue with the product, you can use the official complaint channel: Reportar aquest element

Si us plau, conserveu el rebut de compra per motius de garantia.