1. Product Overview
The JIKONG Smart BMS JK-BD6A24S10PD is an intelligent Battery Management System designed for large capacity series lithium battery packs. It supports 8S-24S configurations for Li-ion, LiFePO4, and LTO battery types, featuring a 0.6A active balancing current and 100A charge/discharge capabilities.
This BMS integrates voltage acquisition, active balancing, overcharge, over-discharge, overcurrent, and over-temperature protection, along with a coulomb meter and Bluetooth communication. Its energy transfer active balancing technology ensures battery consistency, extends battery life, and delays aging. The compact and full-featured design makes it suitable for various applications, including small sightseeing vehicles, mobility scooters, shared cars, high-power energy storage, base station backup power supplies, and solar power stations.
2. Specifications
The JIKONG Smart BMS JK-BD6A24S10PD offers robust performance and protection features. Below are the key specifications and default parameters.
2.1. General Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 20-100 | V |
| Operating Power Consumption | <800 | mW |
| Operating Temperature | -30 to 70 | Β°C |
| Max Number of Collection Strings | 24 | Strings |
| Max Balancing Current | 0.6 | A |
| Max Charging Current | 100 | A |
| Max Discharge Current | 100 | A |
| Max Instantaneous Current | 120 | A |
| Max Internal Loop Resistance | 1.1 | mΞ© |
| Protective Plate Size | 116.8*94.8*14.6 | mm |
| Finished Weight | 327 | g |
2.2. Default Parameters
| Parameter | Li-ion (Default) | LiFePO4 (Default) | LTO (Default) | Unit |
|---|---|---|---|---|
| Balancing Initial Voltage | 3 | 3 | 2 | V |
| Max Balancing Current | 0.6 | 0.6 | 0.6 | A |
| Unit Overcharge Voltage | 4.2 | 3.6 | 2.7 | V |
| Single Overcharge Protection Recovery | 4.18 | 3.55 | 2.65 | V |
| Monomer Undervoltage Protection | 2.82 | 2.6 | 1.8 | V |
| Single Undervoltage Protection Recovery | 2.85 | 2.65 | 1.85 | V |
| Automatic Shutdown Voltage | 2.8 | 2.5 | 1.7 | V |
| SOC-0% Voltage | 2.9 | 2.6 | 1.85 | V |
| SOC-100% Voltage | 4.18 | 3.5 | 2.65 | V |
| Trigger Balancing Differential Pressure | 0.01 | 0.01 | 0.01 | V |
| Charging Overcurrent Protection Delay | 30 | 30 | 30 | S |
| Charge Overcurrent Protection Release Time | 60 | 60 | 60 | S |
| Discharge Overcurrent Protection Delay | 300 | 300 | 300 | S |
| Discharge Overcurrent Protection Release Time | 60 | 60 | 60 | S |
| Short-circuit Protection Delay | 5 | 5 | 5 | Β΅S |
| Short-circuit Protection Release Time | 30 | 30 | 30 | S |
| Charging Overtemperature Protection | 70 | 70 | 70 | Β°C |
| Charge Overtemperature Restore Temperature | 60 | 60 | 60 | Β°C |
| Discharge Overtemperature Protection | 70 | 70 | 70 | Β°C |
| Discharge Overtemperature Recovery | 60 | 60 | 60 | Β°C |
| Charging Low Temperature Protection | -20 | -20 | -20 | Β°C |
| Charge Low Temperature Restore Temperature | -10 | -10 | -10 | Β°C |
| MOS Overtemperature Protection | 100 | 100 | 100 | Β°C |
| MOS Overtemperature Recovery | 80 | 80 | 80 | Β°C |
| Device Address | 0 | 0 | 0 | / |
3. Setup Instructions
3.1. Packing List
Before installation, please verify that all components are present in the package:
- 1 x JIKONG Smart BMS Unit
- 1 x Sampling Line (approx. 70cm long)
- 1 x NTC Temperature Sensor (approx. 40cm long)
- 1 x Switch (approx. 50cm long)
3.2. Wiring Diagram
The JK-BD6A24S10PD series protection board is suitable for 7-24 series lithium battery packs. The specific wiring method depends on the number of cells in your battery pack. Always ensure correct connections to prevent damage.
- Connect the B- terminal of the BMS to the total negative terminal of your battery pack.
- Connect the B+ terminal of the BMS to the total positive terminal of your battery pack.
- Connect the individual sampling lines (B1, B2, ..., B24) to the corresponding positive terminals of each cell in the battery pack, starting from B1 (first cell positive) up to B24 (24th cell positive).
- Connect the negative terminals of your charger and load to the P- terminal of the BMS.
- Connect the NTC temperature sensor to the designated NTC interface on the BMS.
For a detailed wiring diagram specific to the JK-BD6A24S-4PD-24S model, please refer to page 23 of the User Manual PDF.
3.3. APP Installation
To manage and monitor your BMS, install the JIKONG mobile APP. Scan the QR code below to download the matching APP. An Android device with version 7 or higher is required.
3.4. Device Activation
Before powering on the protection board, double-check all connections:
- Ensure the balance cable is properly connected.
- Verify that P- and B- are correctly connected.
- Confirm the protection board is securely fixed to the battery cells.
Incorrect connections can lead to abnormal operation or damage. The BMS is designed for charging activation. After assembly, connect a charger (with voltage 2V higher than the battery voltage) to activate the BMS. Alternatively, if you have the optional light panel, insert its cable into the interface and press the button to activate.
4. Operating Instructions
4.1. Active Equalization
The BMS utilizes active equalization to transfer energy from higher-voltage cells to lower-voltage cells, ensuring battery consistency. Before using this function, set the basic battery parameters in the APP, including battery type, number of cells, battery capacity, trigger equalization differential pressure (default can be retained), voltage calibration, and current calibration. The default balance current is 0.6A. You can adjust the balance current based on your battery capacity or disable the balancing function in the APP's BMS control page.
4.2. Communication Function
The BMS supports UART serial communication as standard, with an optional one-wire communication feature. Users can configure the device address and communication protocol via the APP according to their specific requirements. Refer to the Jikong Protection Board Communication Protocol Documentation for detailed protocols.
4.3. LED Battery Level Display
If an optional LED power level display panel is configured, it will show the battery's State of Charge (SOC). The panel typically includes an activation switch to turn the display on or off. Refer to the table below for SOC correspondence:
| SOC Range | LED1 | LED2 | LED3 | LED4 | LED5 |
|---|---|---|---|---|---|
| 0% - 9% | β | β | β | β | β |
| 10% - 19% | β | β | β | β | β |
| 20% - 39% | β | β | β | β | β |
| 40% - 59% | β | β | β | β | β |
| 60% - 79% | β | β | β | β | β |
| 80% - 100% | β | β | β | β | β |
Legend: β = Green (always on), β = Off
4.4. Multi-screen Display and Data Connection
The JIKONG Smart BMS supports multi-screen display and data connection, allowing you to monitor battery information through various interfaces. The mobile phone Bluetooth APP, 'JIKONG SMART BMS', provides clear and comprehensive data at a glance. You can also use PC software or a dedicated JIKONG home storage display, depending on your needs.
4.5. Intelligent Interaction and Parameter Setting
The BMS allows for intelligent interaction and easy operation. You can freely adjust multiple protection values such as overcharge, over-discharge, overcurrent, and temperature through the APP. The APP also enables you to view various information like voltage, current, temperature, and the number of strings with a single click. For detailed parameter settings, please refer to the 'Instructions for Setting Protection Board Parameters' section within the APP or the full PDF manual.
5. Maintenance
5.1. Intelligent Sleep Function
The BMS is equipped with an intelligent sleep function to conserve energy. If the charging and discharging current remains below 1A for 26 consecutive hours, the BMS will automatically enter sleep mode. To reactivate the BMS, you can either press the button on the optional light panel or connect a charger.
6. Troubleshooting and Protection Features
The JIKONG Smart BMS includes various protection mechanisms to ensure the safety and longevity of your battery pack. These protections can be configured and monitored via the mobile APP.
6.1. Overcharge Protection and Recovery
The BMS features standard charge overvoltage protection. You can set the single overcharge protection voltage and recovery voltage in the APP. If any cell's voltage exceeds the set overcharge protection voltage during charging, the BMS will stop charging. Charging will resume once all cell voltages drop below the recovery voltage.
6.2. Discharge Undervoltage Protection and Recovery
Standard discharge undervoltage protection is included. Set the battery undervoltage protection voltage, recovery voltage, and automatic shutdown voltage in the APP. If any cell's voltage drops below the protection voltage during discharge, the BMS will stop discharging. Discharge will resume when all cell voltages rise above the recovery voltage. If any cell's voltage falls below the automatic shutdown voltage, the BMS will automatically shut down.
6.3. Charge Overcurrent Protection and Recovery
The BMS provides standard charge overcurrent protection. Configure the continuous charging current, overcurrent delay, and release time in the APP. If the charging current exceeds the set continuous current for the specified delay, the BMS will stop charging. Charging will resume after the set release time.
6.4. Discharge Overcurrent Protection and Recovery
Standard discharge overcurrent protection is implemented. Set the continuous discharge current, overcurrent delay, and release time in the APP. If the discharge current exceeds the set continuous current for the specified delay, the BMS will stop discharging. Discharge will resume after the set release time. The maximum continuous discharge current for this model is 100A.
6.5. Overtemperature Protection and Recovery
The BMS includes charge and discharge overtemperature protection. Set the protection and recovery temperatures for both charging and discharging in the APP. If the temperature exceeds the set protection value, the BMS will stop the respective operation (charging or discharging). The operation will resume when the temperature drops below the recovery value.
6.6. Low Temperature Protection and Recovery
Standard charging low temperature protection is provided. Set the charging low temperature protection and recovery temperatures in the APP. If the temperature drops below the set protection value, the BMS will stop charging. Charging will resume when the temperature rises above the recovery value.
6.7. Short Circuit Protection and Recovery
The BMS is equipped with standard short circuit protection. You can set the short circuit protection delay and recovery time in the APP. If a short circuit occurs, the BMS will trigger protection. If protection triggers upon connecting a charger or load, increasing the delay time in the APP may resolve the issue, as it could be due to high peak currents from startup or large internal capacitance.
6.8. Emergency Switch
An emergency switch function is included. If issues like over-temperature, over-discharge, over-charge, or cell string drops occur during normal use, activating the emergency switch in the APP's BMS control page will enable charging and discharging for 30 minutes. This provides a temporary operational window, even if a cell reaches its automatic shutdown voltage, to prevent critical failures.
7. User Tips
- Initial Setup Verification: Always double-check all wiring connections, especially balance leads and main power cables (P- and B-), before applying power to the BMS.
- APP Customization: Utilize the JIKONG mobile APP to fine-tune protection parameters (voltages, currents, temperatures, delays) to perfectly match your specific battery chemistry and application requirements.
- Regular Monitoring: Periodically check the battery status and parameters via the APP to ensure optimal performance and identify any potential issues early.
- Firmware Updates: Keep an eye out for official firmware updates from JIKONG, as these can improve performance, add features, or address bugs.
- Heat Dissipation: Ensure the BMS is installed in a location with adequate airflow to facilitate proper heat dissipation, especially during high charge/discharge currents. The aluminum alloy shell is designed for efficient cooling.
8. Warranty and Support
For any technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact JIKONG customer support. Refer to the official JIKONG website or your purchase documentation for contact details.
For the complete and most detailed instructions, including interface definitions and specific wiring diagrams for all variants, please consult the full Lithium Battery Active Balance Protection Board Maintenance Manual (PDF).
