1. Introduction
The JIKONG JK-BD6A20S15P is an intelligent active balanced power management system (BMS) designed for 8S-20S series Li-ion, LiFePo4, and LTO battery packs. This Smart BMS provides comprehensive protection and active balancing to ensure the longevity and optimal performance of your battery system. It features a 150A continuous charge/discharge current and a 0.6A active balance current, along with various communication interfaces and monitoring capabilities.
2. Package Contents
Please verify that all items are present and in good condition upon unpacking:
- 1 x JIKONG Smart BMS Unit
- 1 x Switch (50cm long)
- 1 x NTC Temperature Sensor (40cm long)
- 1 x Sampling Line B (70cm long)
- 1 x Sampling Line A (70cm long)
3. Specifications
The JIKONG JK-BD6A20S15P Smart BMS offers robust features for battery management:
| Feature | Specification |
|---|---|
| Model | JK-BD6A20S15P |
| BMS Type | Battery BMS (Smart BMS) |
| Battery Strings Supported | 8S-20S (Li-ion/LiFePo4/LTO) |
| Balance Function | Active Balanced BMS |
| Balancing Current | 0.6A |
| Continuous Charge Current | 150A |
| Continuous Discharge Current | 150A |
| Maximum Discharge Current (MAX 3min) | 300A |
| Charge and Discharge Port | Common Port BMS |
| Overcharge Protection Current (J) | 10-150A |
| Over Discharge Protection Current (A) | 10-150A |
| Other Interfaces | RS485, CANBUS, HEAT (Customizable) |
| Dimensions (L x W x H) | 162mm x 102mm x 16.6mm (main unit) |
| Single Cell Voltage Range | 1-5V |
| Voltage Detection Accuracy | ±5mV |
| Overcharge Protection Voltage | 1.2-4.35V Adjustable |
| Over Discharge Protection Voltage | 1.2-4.35V Adjustable |
| Temperature Detection | 3 Pcs NTC sensors |
| Protection Functions | Overcharge, Over Discharge, Overcurrent, Short Circuit |
| Bluetooth Function | Support for Android/iOS phones |
4. Installation and Wiring
Careful installation and wiring are crucial for the safe and correct operation of your BMS. Always ensure the battery pack is disconnected before beginning any wiring procedures.
4.1 General Wiring Steps
- Connecting all the cables: Ensure all balance wires are connected to their respective battery cells correctly.
- Insert the cable into the BMS: Carefully plug the balance cable connector into the designated port on the BMS.
- Connect the B-line and the P-line to the battery: Connect the main negative (B-) and positive (P-) lines from the BMS to the battery pack.
4.2 Wiring Diagrams
Refer to the following diagrams for specific wiring configurations:
4.3 Interface Overview
The BMS features a rich set of interfaces to meet various daily needs and communication modes:
- CAN/RS485: For communication with inverters and other systems.
- BT (Bluetooth): For mobile app connectivity.
- NTC: For temperature sensor input.
- Soft Switch: For power control.
- SOC Indicator: State of Charge indicator.
- Key Switch: External switch control.
- Active Equalizer: For active cell balancing.
- GPS: For GPS module connection (if applicable).
- Display/Switch: For connecting external display units or switches.
- Hot: For heating element connection (if applicable).
5. Operation
The JIKONG Smart BMS offers intelligent interaction and easy operation through its mobile application and optional external displays.
5.1 Mobile App (JIKONG SMART BMS)
The mobile Bluetooth APP "JIKONG SMART BMS" is available for iOS, Android, and HarmonyOS systems. It provides a personal lithium battery steward, allowing you to monitor various parameters and adjust settings.
Through the app, you can:
- Monitor real-time battery parameters: Voltage, Current, Temperature, State of Charge (SOC), Alarms, and Cycle count.
- Adjust multiple protection values: Overcharge, Over-discharge, Overcurrent, Temperature, and Balance settings.
- The app supports multiple languages, which can be switched automatically with your mobile phone system.
5.2 External Display and PC Software
You can choose to use a mobile app, PC software, or a JIKONG home storage display according to your actual needs for monitoring and control.
5.3 Active Balancing
The BMS features active balancing (lossless balancing) technology, which achieves energy transfer by moving energy from cells with higher energy to cells with lower energy, minimizing energy loss and achieving voltage balance.
Active balancing operates continuously whenever there is a voltage difference above the set threshold, regardless of whether the battery is charging, discharging, or idle. This process does not generate significant heat, allowing for larger balancing currents (0.6A to 2A).
5.4 Inverter Communication Protocol
The BMS is compatible with mainstream inverter communication protocols in the market, allowing for seamless integration into various energy systems. Supported protocols can be selected via the mobile app or PC software.
6. Maintenance
To ensure the long-term reliability and performance of your JIKONG Smart BMS, follow these maintenance guidelines:
- Keep Clean and Dry: Regularly inspect the BMS for dust or moisture. Clean with a soft, dry cloth. Avoid exposing the unit to water or high humidity.
- Environmental Conditions: Operate the BMS within its specified temperature and humidity ranges. Avoid extreme temperatures.
- Connection Checks: Periodically check all wiring connections (balance wires, main power cables, communication cables) to ensure they are secure and free from corrosion.
- Firmware Updates: Check the official JIKONG website or app for any available firmware updates to ensure optimal performance and access to new features.
6.1 Durability Features
The BMS is designed with durability in mind:
The fully enclosed aluminum alloy shell provides effective dustproof and waterproof protection, reducing damage from the external environment. Internal high-strength insulating material filling completely wraps components, absorbing vibration and external pressure.
7. Troubleshooting
If you encounter issues with your JIKONG Smart BMS, consider the following common troubleshooting steps:
- No Power/No Display: Check all power connections (B- and P- lines) and ensure the battery pack has sufficient voltage. Verify the external display is correctly connected and powered.
- Balancing Issues: Ensure all balance wires are correctly connected to their respective cells. Check cell voltages via the app; if a significant discrepancy persists, inspect individual cell connections.
- Communication Problems (Bluetooth/RS485/CAN): For Bluetooth, ensure the app is installed, Bluetooth is enabled on your device, and the BMS is within range. For wired communication, check cable integrity and proper connection to the inverter or host computer. Verify the correct protocol is selected in the app/software.
- Over-protection Alarms: If the BMS triggers overcharge, over-discharge, or overcurrent alarms, check the battery voltage and current. Ensure your battery pack is within the safe operating limits configured in the BMS settings. Adjust settings via the app if necessary, but only after understanding the implications.
- App Not Connecting: Ensure the BMS is powered on. Restart the app and your mobile device. If the issue persists, try reinstalling the app.
For complex issues or persistent problems, consult the detailed error codes and diagnostic information available within the JIKONG SMART BMS app or PC software. If the problem cannot be resolved, contact JIKONG customer support.
8. User Tips
- Always double-check all wiring connections before powering on the BMS to prevent damage.
- Familiarize yourself with the mobile application to effectively monitor and manage your battery system.
- Regularly check the battery cell voltages through the app to ensure optimal balance and health.
- When adjusting protection parameters, understand the impact of each setting on your battery's performance and safety.
9. Warranty and Support
JIKONG products are manufactured to high-quality standards. For warranty information, technical support, or service inquiries, please refer to the official JIKONG website or contact your authorized dealer. Keep your purchase receipt as proof of purchase.
