JIKONG BMS V19 JK-PB1A16S15P User Manual

1. Introduction

The JIKONG V19 JK-PB1A16S15P Battery Management System (BMS) is an intelligent protection board designed for large-capacity series lithium battery packs. It offers comprehensive management and protection features, making it suitable for various applications including household energy storage, communication base stations, building energy storage, and industrial equipment backup power.

Key features include voltage acquisition, high-current active balancing, overcharge, over-discharge, overcurrent, over-temperature protection, coulomb meter, Bluetooth communication, and host computer monitoring. The BMS is compatible with lithium iron phosphate, ternary lithium, and lithium titanate battery types.

Figure 1: JIKONG BMS V19 JK-PB1A16S15P Product Overview

Functional Characteristics

• LED Bluetooth status indicator
• APP Bluetooth remote operation (Android and iOS support)
• Battery capacity calculation
• PC software support for monitoring and control
• High precision voltage acquisition (±3mV)
• High precision current acquisition
• Support for external information screen display
• Accurate time logging
• RS485 and CAN communication support
• Heating function for low-temperature environments
• Alarm dry contact function
• Comprehensive protection: Charge overcurrent, charge overvoltage, charge overtemperature, charge low temperature, discharge overcurrent, discharge undervoltage, discharge overtemperature, short circuit protection
• Battery parallel current limiting function
• Active balancing with 1A continuous balance current

2. Specifications

The following tables detail the technical specifications and default parameters for the JIKONG BMS V19 JK-PB1A16S15P model.

Figure 2: JIKONG Product Specifications

General Parameters

Default Parameters (LiFePo4)

3. Packing List

Please ensure all items are present and in good condition upon unpacking. The package should contain the following components:

Figure 3: Package Contents

• 1 x BMS
• 1 x Interface board
• 1 x Adapter cable B (30cm long)
• 1 x Adapter cable A (30cm long)
• 1 x R545 Network cable (40cm long)
• 1 x Cells total B+ Cable (50cm long)
• 2 x Sampling line A (90cm long)
• 1 x Sampling line B (90cm long)
• 1 x Sampling line C (90cm long)
• 1 x Switch (50cm long)
• 1 x Heating Adapter cable (17cm long)
• 2 x Adapter

4. Installation and Wiring

Before installation, carefully inspect the packaging for any signs of damage. Handle the protection board gently. The JK-PB1A16S15P is suitable for 7-16 series lithium battery packs. Wiring methods vary depending on the number of cells in your battery pack. Ensure all connections are correct and secure to prevent abnormal operation or damage.

Wiring Instructions

1. Connect all necessary cables to the BMS.
2. Insert the balance cable into the BMS.
3. Connect the B-line and the P-line to the battery.
4. For 16-string cells, ensure the first B8 line is connected. The second B8 cable is not needed.

Figure 4: Wiring Method for 16-string and 8-string Cells

Device Activation

Before powering on the protection board, double-check that the balance cables are properly connected and that the P- and B- terminals are correctly wired. Verify that the protection board is securely fixed to the battery core. Once confirmed, power on the board. The BMS does not have a power-on control switch; it activates in charging mode (charger voltage 2V higher than battery voltage). After battery assembly, connect the charger to activate the protection board.

Alternatively, the protection board also supports key activation and display activation. If you have an optional display screen and button, simply insert the cable into the display interface and press the button to activate.

Interface Board Overview

The interface board provides convenient access to LED indicators, a reset switch, DIP switches, dry contacts, and communication ports. The LEDs indicate BMS status and remaining battery power. The reset button can be used to reset the BMS if issues occur. DIP switches are used for setting addresses in parallel configurations (0-15 addresses supported). Dry contacts control external devices like alarms and fans. CAN and RS485-1 are for inverter communication, while RS485-2 is for parallel battery pack connections and communication with a host computer.

Figure 5: Interface Board Diagram

DIP Switch Settings for Device Address

The DIP switches allow you to set the device address for communication in a multi-BMS setup. Each switch position (1-4) corresponds to a binary value. "ON" typically represents '1' and "OFF" represents '0'.

5. Operating Instructions

Mobile APP Operation

The JIKONG BMS can be monitored and controlled via a dedicated mobile application, available for Android (version 7 minimum) and iOS operating systems. Scan the QR code below to download the APP.

Figure 6: Mobile APP Download QR Code

Connect to the BMS via Bluetooth to view real-time battery status, modify working parameters, and control charge/discharge switches. The APP provides a clear overview of voltage, current, temperature, State of Charge (SOC), alarms, and cycle counts.

Figure 7: Mobile APP Data Display

Parameter Settings

Through the APP, you can adjust various protection values such as overcharge, over-discharge, overcurrent, temperature, and balance. Refer to the "Instructions for Setting Protection Board Parameters" in the full PDF manual for detailed guidance.

For active equalization, set the balance trigger pressure difference (mV) in the APP. Balancing automatically activates when the voltage difference between any two battery strings exceeds the set value and deactivates when it falls below. The default balance current is 1A. Adjust this based on your battery capacity, ensuring it does not exceed 0.2C of the battery capacity. If not needed, disable balancing via the BMS control page.

Communication Functions

The BMS supports CAN and RS485 communication. The default CAN communication rate is 250K. You can select the appropriate protocol in the APP based on your inverter brand and specifications. The RS485-1 interface is used for communication with inverters, while RS485-2 is for parallel battery pack connections and communication with a host computer. The default RS485 baud rate is 115200. Communication addresses (0-15) can be set using the DIP switches on the interface board.

Figure 8: Mobile APP CAN Protocol Selection

Figure 9: PC Software for Inverter Communication

6. Maintenance

Regular maintenance ensures the longevity and optimal performance of your JIKONG BMS.

Heating Function

The BMS includes a heating function to prevent battery performance degradation in low-temperature conditions. It uses a resistance heater or heating film with a designed current of 4A. You can activate or deactivate this function via the BMS control page in the APP. For safety, it is recommended to install a normally closed temperature switch (45°C to 65°C) in series with the heating circuit as a secondary protection.

Dry Contact Function

The two dry contacts on the BMS can control external devices like alarms and fans. When the BMS detects overtemperature, overcharge, or over-discharge, these contacts can trigger an alarm or activate cooling fans. You can configure the trigger conditions via the APP.

Intelligent Sleep Mode

The intelligent sleep function helps reduce the BMS's self-consumption when the battery is in standby (charging/discharging current less than 1A for 26 consecutive hours). You can enable or disable this feature in the APP. To reactivate the BMS from sleep, press a button or connect a charger.

General Care

• Keep the BMS and battery connections clean and free from dust or debris.
• Periodically check all wiring for secure connections and signs of wear.
• Ensure adequate ventilation around the BMS to prevent overheating.

7. Troubleshooting

The JIKONG BMS is designed with multiple protection mechanisms to ensure safe and reliable operation. Here are common issues and how the BMS handles them:

Protection Triggers and Recovery

• Overcharge Protection: If any cell voltage exceeds the set overcharge voltage during charging, the BMS will stop charging. Charging resumes when all cell voltages drop below the recovery voltage.
• Undervoltage Protection: If any cell voltage drops below the set undervoltage protection voltage during discharge, the BMS will stop discharging. Discharging resumes when all cell voltages rise above the recovery voltage. If cell voltage drops below the automatic shutdown voltage, the BMS will shut down.
• Overcurrent Protection (Charge/Discharge): If charging or discharging current exceeds the set continuous current for a specified delay, the BMS will stop the operation. It will resume after the overcurrent release time.
• Overtemperature Protection (Charge/Discharge): If the BMS temperature exceeds the set overtemperature value, the operation will stop. It will resume when the temperature drops below the recovery value.
• Low Temperature Protection (Charge): If the BMS temperature drops below the set low temperature value during charging, charging will stop. It will resume when the temperature rises above the recovery value. Consider using the heating function in cold environments.
• Short Circuit Protection: The BMS has built-in short circuit protection. If a short circuit occurs, the BMS will stop operation and recover after a set delay. If this happens during initial connection, verify wiring and increase the short circuit protection delay if necessary, especially with loads that have large capacitance.

Emergency Switch

In case of critical issues like over-temperature, over-discharge, over-charge, or cell string drops during normal use, activating the emergency switch in the APP's BMS control page will force the protection board to enable both charge and discharge for 30 minutes. This provides a temporary operational window, even if cell voltages reach automatic shutdown levels, to prevent critical system failures.

8. User Tips

• Optimize Battery Life: Utilize the active balancing feature to maintain cell consistency, which significantly prolongs the overall lifespan and improves the cruising range of your battery pack.
• Monitor with APP: Regularly check the mobile APP for real-time battery status, including voltage, current, and temperature. This helps in proactive management and early detection of potential issues.
• Customization: Take advantage of the customizable protection parameters via the APP to fine-tune the BMS performance according to your specific battery type and usage scenario.
• Cold Weather Operation: If operating in extremely cold environments, ensure the heating function is enabled and properly configured to protect battery cells from low-temperature damage.

9. Warranty and Support

For detailed warranty information, technical support, or service inquiries, please refer to the official JIKONG documentation or contact JIKONG customer service. A comprehensive user manual in PDF format is available for download: JIKONG BMS User Manual (PDF).