JIKONG V19 JK-PB2A16S20P Smart BMS User Manual

1. Introduction and Overview

The JIKONG V19 JK-PB2A16S20P Smart Battery Management System (BMS) is a sophisticated control unit designed for large-capacity series lithium battery packs. It offers comprehensive management and protection features, ensuring optimal performance and longevity of your battery system. This BMS is suitable for Li-ion, LiFePO4, and LTO battery types, supporting configurations from 8S to 16S with a continuous charge/discharge current of 200A.

Key Features:

• Active Balancing: Real-time active energy transfer equalization with a supercapacitor medium, achieving 2A continuous balanced current for enhanced battery consistency and extended lifespan.
• High Precision Monitoring: Accurate voltage acquisition (±3mV) and current acquisition.
• Comprehensive Protection: Includes overcharge, over-discharge, overcurrent, over-temperature, low-temperature, and short-circuit protection.
• Smart Control: Mobile APP (Android and iOS) for real-time battery status viewing and parameter modification via Bluetooth communication.
• Communication Interfaces: Supports BT, RS232, RS485, CAN, HEAT, and UART protocols for versatile integration with inverters and other systems.
• Display Interface: Reserved interface for optional display screens to view battery information.
• Heating Function: Integrated heating capability for low-temperature environments to maintain battery activity.
• Intelligent Sleep Mode: Reduces self-consumption during standby.

2. Specifications

General Product Attributes

Detailed Product Parameters

Dimensions and Weight

The JIKONG V19 JK-PB2A16S20P series protection board measures 300mm x 100mm x 24mm. The finished weight is approximately 1000g.

3. Setup and Installation

3.1. Packing List

Please verify that all components are present in the package:

1. BMS x 1
2. Interface board x 1
3. Adapter cable B x 1 (long 30cm)
4. Adapter cable A x 1 (long 30cm)
5. RS485 Network cable x 1 (long 40cm)
6. Cells total B+ Cable x 1 (long 50cm)
7. Sampling line A x 2 (long 90cm)
8. Sampling line B x 1 (long 90cm)
9. Sampling line C x 1 (long 90cm)
10. Switch x 1 (long 50cm)
11. Adapter cable C x 1 (long 30cm)
12. Heating Adapter cable x1 (long 17cm)
13. Adapter x 1

3.2. Wiring Instructions

The JK-PB2A16S20P series protection board is suitable for 7-16 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.

1. Connect all the cables.
2. Insert the cable into the BMS.
3. Connect the B- line and the P- line to the battery.
4. Important Note: There are two B8 cables. Only the first B8 cable needs to be connected. The second B8 cable does not need to be connected.

3.3. Interface Board Functions

The interface board facilitates user interaction with the BMS through LED indicators, a reset switch, DIP switches, dry contacts, and communication ports. The LED indicators provide visual feedback on the BMS status and remaining battery power. The reset button can be used to reset the BMS if an anomaly occurs. DIP switches are used for setting the BMS address in parallel configurations (0-15 addresses).

3.4. Device Activation

Before powering on the protection board, ensure that the balance cables are properly connected and that the P- and B- connections are correct. Verify that the protection board is securely fixed to the battery core. Once confirmed, you can power on the BMS.

The protection board does not have a physical power-on switch. It is designed for charging activation mode, meaning the charger voltage must be 2V higher than the battery voltage to activate it. After battery assembly, connect the charger to initiate the BMS operation.

Alternatively, the BMS can be activated via a button or an optional display screen. If you have these accessories, simply connect the cable to the display interface and press the button to activate.

4. Operating Instructions

4.1. Mobile APP Installation and Usage

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

The APP allows you to:

• View real-time battery status (voltage, current, temperature, SOC, alarms, cycle count).
• Modify protection parameters (e.g., overcharge/discharge voltages, current limits).
• Control charge and discharge switches.
• Select communication protocols for inverters.

4.2. Active Equalization

The BMS employs active equalization technology to transfer energy from high-voltage cells to low-voltage cells, ensuring battery consistency. Before using this function, set the basic battery parameters in the APP, including cell count, battery capacity, trigger equalization differential pressure (default is usually fine), voltage calibration, and current calibration.

You can set the balance trigger pressure difference (mV) in the APP. When balancing is enabled, it activates automatically if the voltage difference between any two battery strings exceeds the set value, and deactivates when the difference falls below the threshold. The default balance current is 1A/2A. It is recommended that the balance current not exceed 0.2C of the battery capacity. If not needed, the balancing function can be turned off in the APP's BMS control page.

4.3. Communication Functions

The BMS supports CAN and RS485 communications. The default CAN communication rate is 250K. Users can select the appropriate protocol in the APP based on their inverter brand and specifications. There are two RS485 communication interfaces:

• RS485-1: Used for communication with inverters and other settings.
• RS485-2: Used for parallel connection of battery packs and communication with a host computer to view battery string information. The default baud rate is 115200.

The communication address can be set using the DIP switches on the interface board (addresses 0-15). This allows for monitoring multiple BMS units in parallel via a host computer.

4.4. LED Indicators and DIP Switch Settings

The interface board features LED indicators and DIP switches. The LEDs provide visual feedback on the BMS status (RUN, ALM) and battery capacity (L1-L5). The DIP switches are crucial for setting the device address, especially when using multiple BMS units in parallel.

For a complete list of DIP switch settings for addresses 0-15, please refer to the full user manual (PDF).

5. Maintenance

5.1. Heating Function

The BMS includes a heating function to prevent battery activity reduction in low-temperature environments. This function uses a resistance heater or heating film. The designed heating current is 10A. You can activate or deactivate this function via the APP's BMS control page based on ambient temperature. 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 to prevent thermal runaway.

5.2. Intelligent Sleep Mode

The intelligent sleep function helps reduce the BMS's energy consumption by shutting it down when the charging and discharging current is less than 1A for 26 consecutive hours. This function can be enabled or disabled in the APP. To reactivate the BMS from sleep, press the activation button or connect a charger.

6. Troubleshooting

6.1. Protection Functions and Recovery

The BMS is equipped with various protection mechanisms that automatically trigger to safeguard the battery. These include:

• Overcharge Protection: If any cell voltage exceeds the set overcharge protection voltage during charging, the BMS will stop charging. Charging resumes when all cell voltages drop below the overcharge recovery voltage.
• Discharge Undervoltage Protection: If any cell voltage falls below the set undervoltage protection voltage during discharge, the BMS will stop discharging. Discharging resumes when all cell voltages rise above the undervoltage recovery voltage. If any cell voltage drops below the automatic shutdown voltage, the BMS will shut down to protect the battery.
• Overcurrent Protection (Charge/Discharge): If the charging or discharging current exceeds the set continuous current for a specified delay, the BMS will stop the respective operation. It will resume after the overcurrent release time.
• Overtemperature Protection (Charge/Discharge): If the battery temperature exceeds the set overtemperature protection value, the BMS will stop charging/discharging. Operation resumes when the temperature falls below the recovery value.
• Low Temperature Protection (Charge): If the battery temperature falls below the set low-temperature protection value during charging, the BMS will stop charging. Charging resumes when the temperature rises above the recovery value.
• Short Circuit Protection: The BMS automatically detects short circuits. If a short circuit occurs, the BMS will stop the operation. The short circuit protection delay and recovery time can be adjusted in the APP. If a short circuit is triggered upon initial connection of a charger or load, increasing the delay time may resolve the issue, as it could be due to peak currents.

6.2. Emergency Switch

The emergency switch function allows the BMS to temporarily enable charge and discharge for 30 minutes even if issues like over-temperature, over-discharge, over-charge, or dropped strings occur. This provides a critical window for emergency use. The protective plate will continue to work until the end of the 30-minute cycle, even if a single cell voltage reaches the automatic shutdown voltage.

6.3. Common Issues and User Tips

• Error 9 (First Cell Voltage Not Detected): If the BMS displays an error indicating that the first cell voltage is not detected, carefully re-check all wiring connections, especially the sampling lines and the B- and P- connections to the battery. Ensure all cables are securely inserted and making proper contact.
• Inverter Compatibility: The JIKONG BMS supports various communication protocols (RS485, CAN, UART) and is compatible with mainstream inverter brands. Verify your inverter's specific protocol and select it in the mobile APP settings.
• Parallel Function Setup: When using multiple BMS units in parallel, ensure each BMS has a unique address set via the DIP switches. Address 0 is typically for the host BMS, and 1-15 for slave units.

7. Warranty and Support

For detailed technical specifications, parameter settings, and advanced troubleshooting, please refer to the complete user manual available in PDF format. A link to the PDF manual is provided by the seller:

View User Manual (PDF)

For further assistance or technical support, please contact JIKONG customer service or refer to the official JIKONG Smart BMS Store.