LVSEDTAL JK-BD6A20S6P BMS User Manual

1. Introduction

This manual provides essential instructions for the safe and effective use of the LVSEDTAL JK-BD6A20S6P Battery Management System (BMS). This BMS is designed for 8S-24S Li-Ion, LiFePo4, and LTO battery packs, offering a 60A charging current and active balancing capabilities. It includes critical protection functions such as overcharge, over-discharge, overcurrent, and short-circuit protection to ensure battery longevity and safety.

Please read this manual thoroughly before installation and operation. Keep it for future reference.

2. Key Features

• Model: JK-BD6A20S6P (also compatible with JK-BD6A17S6P and JK-BD6A24S6P series)
• Battery Type Compatibility: Li-Ion, LiFePo4, LTO
• Cell Configuration: 8S-24S (8 to 24 series cells)
• Charging/Discharging Current: 60A
• Balance Function: Active Balanced BMS with 0.6A balancing current
• Protection Functions: Overcharge Protection, Over-discharge Protection, Overcurrent Protection, Short Circuit Protection
• Communication: BT/Display support
• Port Type: Common Port for charge and discharge

Figure 1: Overview of JK-BD6A20S6P BMS features, highlighting its model, function, BMS type, balancing current, battery strings compatibility, charge/discharge current, and battery type.

3. Setup and Installation

3.1 Safety Precautions

• Always wear appropriate personal protective equipment (PPE), including safety glasses and insulated gloves.
• Ensure the battery pack is disconnected from any power source before installation.
• Verify all connections are correct before applying power to prevent damage to the BMS or battery.
• Avoid short-circuiting battery terminals or BMS connections.
• Work in a well-ventilated area.

3.2 Component Identification

Figure 2: Exploded view showing the internal components of the BMS, including the cooling aluminum alloy, MOS transistors, MCU, NTC thermistors, and sampling lines A and B.

The BMS consists of a main circuit board, cooling aluminum alloy plates, MOS transistors for power switching, a Microcontroller Unit (MCU), NTC thermistors for temperature sensing, and sampling lines for cell voltage monitoring.

3.3 Wiring Diagram (General Guidance)

A detailed wiring diagram is crucial for correct installation. While a specific diagram is not provided here, the general connection points are:

1. B- (Battery Negative): Connect the main negative terminal of the battery pack to the B- terminal on the BMS.
2. P- (Load/Charge Negative): Connect the negative terminal for both charging and discharging (load) to the P- terminal on the BMS.
3. Balance Wires (B1, B2, ..., Bn): Connect the individual cell voltage sensing wires from the battery pack to the corresponding balance ports on the BMS. Ensure correct order from B1 (first cell positive) to Bn (last cell positive).
4. Temperature Sensors (NTC): Connect NTC thermistors to the designated ports on the BMS for temperature monitoring of the battery cells.

Important: Always connect the B- and balance wires first, then the P- terminal. Disconnect in reverse order (P- first, then balance wires, then B-).

4. Operating Instructions

4.1 Initial Power-Up

After completing all wiring, carefully apply power to the battery pack. The BMS should initialize. Monitor the battery voltage and individual cell voltages to confirm proper operation.

4.2 Charging

• Connect a compatible charger to the battery pack (via the P- terminal).
• The BMS will manage the charging process, including overcharge protection and cell balancing.
• Ensure the charger's voltage and current settings are appropriate for your battery chemistry and capacity. The BMS supports up to 60A charging current.

4.3 Discharging (Load Operation)

• Connect your load to the battery pack (via the P- terminal).
• The BMS will monitor the discharge process, providing over-discharge and overcurrent protection.
• The maximum continuous discharge current is 60A. Exceeding this limit may trigger overcurrent protection.

4.4 Bluetooth/Display Functionality

The BMS supports Bluetooth connectivity for monitoring battery parameters via a dedicated application or a compatible display unit. Refer to the specific application or display manual for pairing and usage instructions. This allows real-time monitoring of cell voltages, total voltage, current, temperature, and protection status.

5. Maintenance

• Regular Inspection: Periodically inspect all wiring and connections for signs of wear, corrosion, or looseness. Tighten any loose connections.
• Cleanliness: Keep the BMS and surrounding area clean and free from dust, dirt, and moisture. Use a dry, soft cloth for cleaning.
• Temperature Monitoring: Ensure the BMS operates within its specified temperature range. Adequate ventilation is important, especially during high current operation.
• Firmware Updates: If available, check for firmware updates for the BMS to ensure optimal performance and access to new features. Follow manufacturer instructions for any update procedures.

6. Troubleshooting

If troubleshooting steps do not resolve the issue, contact customer support.

7. Specifications

8. Warranty and Support

Specific warranty information is not provided in the product details. For warranty claims or technical support, please contact the seller or manufacturer directly through your purchase platform.

Manufacturer: LVSEDTAL

Please retain your proof of purchase for any warranty-related inquiries.