JIKONG JKBMS V19 Inverter BMS Instruction Manual

1. Introduction

The JIKONG JKBMS V19 Inverter BMS is an advanced Battery Management System designed for home energy storage applications. It supports various battery chemistries including LiFePO4, Li-ion, and LTO, with configurations ranging from 8S to 16S (24V/48V systems). This smart BMS features active balancing up to 2A, ensuring optimal battery health and extended lifespan. It offers comprehensive protection functions and multiple communication interfaces for seamless integration with inverter systems.

2. Safety Information

Please read and understand all safety instructions before installation and operation. Failure to follow these instructions may result in electric shock, fire, serious injury, or death.

• Always ensure proper polarity when connecting the BMS to the battery pack. Incorrect wiring can cause severe damage to the BMS, battery, and connected equipment, and poses a fire hazard.
• Installation should only be performed by qualified personnel with experience in battery systems and electrical wiring.
• Wear appropriate personal protective equipment (PPE) including safety glasses and insulated gloves during installation and maintenance.
• Do not short-circuit the battery terminals or the BMS output. This can lead to high current discharge, overheating, and potential fire or explosion.
• Ensure all connections are secure and properly insulated to prevent accidental contact.
• Keep the BMS away from water, moisture, and flammable materials.
• Refer to the specific wiring diagrams provided for your battery configuration (8-string or 16-string cells).

3. Product Overview

The JIKONG JKBMS V19 is a smart active balanced BMS featuring a robust design and intelligent control. Key components include the main BMS board, an interface board, and an optional 4.3-inch touch screen display.

Key Features:

• Active Balancing (Lossless Balancing): Achieved through energy transfer, moving energy from cells with higher energy to cells with lower energy, achieving voltage balance with minimal energy loss. Active balancing current 1A-2A.
• Versatile Application: Tailor-made for home energy storage systems, also suitable for communication base stations, building energy storage, and industrial equipment backup power.
• Intelligent Interaction and Easy Operation: Freely adjust multiple protection values such as overcharge, overdischarge, overcurrent, temperature, and balance. View information like voltage, current, temperature, and number of strings with one click.
• Multi-screen Display & Data Connection: Supports mobile phone Bluetooth APP 'JIKONG BMS' (iOS, Android, HarmonyOS), PC software, and JIKONG home storage dedicated display.
• Patented Parallel Protection Technology: Features an integrated 10A current limiting module for safe battery expansion and parallel connection of multiple battery packs.
• Efficient Heat Dissipation: Incorporates an aluminum alloy heat sink to reduce temperature rise and improve reliability.
• Broad Inverter Compatibility: Compatible with mainstream inverter communication protocols including Deye, Pylontech, Growatt, Victron Energy, Sofar, INVT, Goodwe, SMA, and SNE.

4. Specifications

5. Setup and Installation

5.1. Package Contents

Upon opening the package, please verify that all the following items are included:

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

5.2. Wiring Instructions

Careful wiring is crucial for the safe and correct operation of the BMS. Follow these steps precisely:

1. Connect all the balance cables to the battery cells first.
2. Insert the balance cable connector into the BMS.
3. Connect the main B- (negative) line and the P- (load/charge negative) line to the battery.
4. Important Note: If your model includes two B8 cables, only the first B8 line needs to be connected. The second B8 cable is not required for connection.

5.3. Interface Board Connections

The interface board provides various communication and control ports:

• P1 Port: Connects to the main interface board.
• Sampling Line Ports (1, 2, 3, 4): For connecting battery sampling lines.
• P2 Port: Connects to the main interface board.
• P3 Port: Connects to the main interface board.
• Heat Function Port: For connecting heating elements.
• UART: Universal Asynchronous Receiver/Transmitter port.
• Display or Switch Port: For connecting the optional display or external switch.
• RS485-1 / RS485-2 Interface: For RS485 communication.
• 8P8C RJ45 Socket: Ethernet-style connector for communication.
• RS232 Interface: For RS232 communication.
• 6P6C RJ11 Socket: Telephone-style connector for communication.
• CAN Interface: For CAN bus communication.
• Dry Interface: Dry contact output.
• Dial Switch: For configuration settings.
• Switch: Power switch.

5.4. APP and Host Computer Setup

The JIKONG JKBMS V19 offers flexible monitoring and control options:

• Mobile APP: Download the 'JIKONG BMS' app from your device's app store (supports iOS, Android, and HarmonyOS). The app provides a multi-screen display for real-time data connection, showing voltage, current, temperature, State of Charge (SOC), alarm status, and cycle count.
• Host Computer Software: For advanced configuration and monitoring, the BMS can be connected to a host computer. This allows for setting inverter communication protocols and adjusting various parameters.

6. Operating Instructions

6.1. 4.3-inch Touch Screen Display (Optional)

The optional 4.3-inch touch screen display provides a clearer interface and more convenient operation. It shows real-time battery voltage, current, temperature, and individual cell voltages. You can check every cell pack information directly from the display, and RS485 and CANBUS settings can also be configured on the display.

6.2. Parameter Adjustment

Multiple protection values such as overcharge, overdischarge, overcurrent, temperature, and balance can be adjusted via the mobile APP or host computer software. Always read the internal parameters of the protection board first, and then make changes. This ensures you understand the current configuration before modifying it.

7. Maintenance

• Regularly check all wiring connections for tightness and corrosion. Loose connections can lead to resistance, heat buildup, and potential system failure.
• Monitor battery cell voltages and temperatures through the APP or display to ensure optimal performance and identify potential issues early. Consistent monitoring helps in proactive maintenance.
• Keep the BMS clean and free from dust and debris. Ensure adequate ventilation around the unit to prevent overheating.
• Periodically check for firmware updates for the BMS and associated software/APP to benefit from improved features, bug fixes, and enhanced performance.

8. Troubleshooting

Common Issues and Solutions:

• BMS not powering on: Check all power connections, especially the main battery positive and negative terminals. Ensure the switch is in the ON position if applicable. Verify the battery voltage is within the operational range of the BMS.
• Cells out of balance: The active balancing feature should manage this. If persistent imbalance occurs, verify all balance wire connections are correct and secure. Check individual cell voltages via the APP or display to identify problematic cells. If a cell is severely damaged, it may need replacement.
• Overcharge/Overdischarge protection triggered: This indicates the battery has reached its voltage limits. Check charger settings for overcharge and load for overdischarge. The BMS will automatically cut off to protect the battery. Allow the battery to return to a safe voltage range before resuming operation.
• Overcurrent/Short Circuit protection triggered: This indicates excessive current draw or a short circuit. Immediately disconnect the load and identify the cause of the high current. The BMS will automatically cut off to prevent damage. Do not attempt to bypass protection features.
• Communication issues (Bluetooth/RS485/CAN): Ensure the correct protocol is selected in the APP/software. Check physical cable connections for damage or loose contacts. For Bluetooth, ensure the device is within range and paired correctly. Restarting the BMS and the communication device may resolve temporary glitches.

9. User Tips

• For optimal performance and longevity, ensure your battery pack is assembled with cells of similar internal resistance and capacity. This helps the active balancing system work more efficiently.
• Utilize the mobile APP for convenient real-time monitoring of your battery system's health and performance. This allows for quick identification of any anomalies.
• When setting up communication protocols with an inverter, always refer to both the BMS manual and the inverter's manual to ensure compatible settings and proper integration.

10. Product Video

11. Support

For further technical assistance, warranty information, or inquiries, please contact JIKONG customer support through their official channels. Refer to your purchase documentation for specific contact details.