1. Introduction
The Jikong Smart Active Balance BMS (Battery Management System) is designed to provide comprehensive protection and intelligent management for various battery types, including Li-ion, LiFePO4, and LTO. This manual will guide you through the installation, operation, maintenance, and troubleshooting of your BMS to ensure optimal performance and longevity of your battery packs.
The BMS supports a wide range of battery configurations from 4S to 20S and charging currents up to 100A, making it suitable for diverse applications such as electric vehicles, energy storage systems, and more. Key features include active balancing, overcharge protection, over-discharge protection, overcurrent protection, short circuit protection, and over-temperature protection. It also offers smart monitoring and control via Bluetooth, RS485, and CAN communication interfaces through a dedicated mobile application.
2. Package Contents
Before proceeding with installation, please verify that all items are present in your package:
- Jikong Smart Active Balance BMS Unit
- NTC Temperature Sensor (40cm)
- Switch (50cm or 15cm, depending on model)
- Balance Cables (75cm)
- Screws (x2)
- User Manual (this document)
3. Setup and Installation
Proper installation is crucial for the safe and effective operation of your Jikong Smart Active Balance BMS. Please follow these steps carefully.
3.1 Physical Installation
- Mounting the BMS: Securely mount the BMS unit in a location that is protected from moisture, excessive heat, and physical damage. Ensure adequate ventilation.
- Connecting Balance Wires: Connect the balance wires from your battery cells to the corresponding ports on the BMS. Ensure each wire is connected to the correct cell voltage tap. Refer to the wiring diagram for your specific BMS model.
- Connecting P- and B- Terminals: Connect the main negative terminal of your battery pack to the B- terminal on the BMS. Connect the load/charger negative terminal to the P- terminal on the BMS.
- Connecting Temperature Sensor: Plug the NTC temperature sensor into its designated port on the BMS and place the sensor near the battery cells to monitor temperature accurately.
- Connecting Switch: If your model includes a switch, connect it to the appropriate port. This switch can be used to power on/off the BMS or activate certain functions.
3.2 App Connection (Bluetooth)
The Jikong Smart BMS can be monitored and controlled via a smartphone application. Follow these steps to connect:
- Download the official Jikong BMS app from your device's app store (supports Apple, Android, and Harmony systems).
- Ensure Bluetooth is enabled on your smartphone.
- Power on your battery pack and the BMS.
- Open the Jikong BMS app and search for available devices.
- Select your BMS from the list to establish a connection.
- Once connected, you can view real-time battery data and configure parameters.
4. Operating Instructions
The Jikong Smart Active Balance BMS provides intelligent management and protection for your battery system.
4.1 Active Balancing
The active balancing feature ensures that all battery cells are maintained at a similar voltage level. This process transfers energy between cells to equalize their charge, which helps to:
- Extend the overall lifespan of the battery pack.
- Improve the efficiency and capacity utilization of the battery.
- Prevent overcharging or over-discharging of individual cells.
The BMS can achieve an accurate balance voltage difference down to 0.004V.
4.2 Protection Functions
The BMS is equipped with multiple protection mechanisms to safeguard your battery and connected devices:
- Overcharge Protection: Prevents cells from being charged beyond their safe voltage limit.
- Over Discharge Protection: Stops discharge when cells reach their minimum safe voltage.
- Overcurrent Protection: Limits the current drawn from the battery to prevent damage.
- Short Circuit Protection: Immediately cuts off power in case of a short circuit.
- Over Temperature Protection: Monitors battery temperature and takes action if it exceeds safe limits.
- Drop Protection: (Specific to certain models) Provides additional safety against sudden voltage drops.
4.3 Monitoring via App
Through the Bluetooth-connected app, you can:
- View real-time battery cell voltages.
- Monitor the overall balance status of the battery pack.
- Adjust various parameters such as protection thresholds.
- Access historical data and diagnostic information.
5. Maintenance
To ensure the longevity and reliable performance of your Jikong Smart Active Balance BMS, consider the following maintenance guidelines:
- Regular Inspection: Periodically check all connections (balance wires, main power cables, sensor cables) for any signs of wear, corrosion, or looseness.
- Cleanliness: Keep the BMS unit clean and free from dust and debris. Use a dry, soft cloth for cleaning. Avoid using liquids or abrasive cleaners.
- Environmental Conditions: Ensure the BMS operates within its specified temperature and humidity ranges. Avoid exposing it to extreme conditions.
- Firmware Updates: Check the Jikong app regularly for any available firmware updates for your BMS. Keeping the firmware updated can improve performance and add new features.
6. Troubleshooting
If you encounter issues with your Jikong Smart Active Balance BMS, refer to the following common problems and solutions:
6.1 Common Issues
- Device Information Failure / Cannot Connect to App:
- Ensure the BMS is powered on and functioning.
- Verify that Bluetooth is enabled on your smartphone and the app has necessary permissions.
- Check if the BMS is within Bluetooth range.
- Restart the app and try reconnecting.
- Ensure all balance wires are correctly connected to the BMS and battery cells.
- Battery Not Charging/Discharging:
- Check all main power connections (B- and P-).
- Verify that no protection (e.g., overcurrent, over-discharge) has been triggered. The app can provide diagnostic information.
- Inspect the charging/discharging device for proper operation.
- Unbalanced Cell Voltages:
- Ensure the active balancing function is enabled in the app settings.
- Allow sufficient time for the active balancing to work, especially if the voltage difference is significant.
- Check individual cell health; a faulty cell might prevent proper balancing.
6.2 User Tips
- Connection Stability: Some users have reported issues with device information failure. Always ensure a stable Bluetooth connection and that the app is properly configured. Double-check all physical connections.
- Updated Design: For model BD4A8S4P, the appearance has been updated for easier installation and usage. Familiarize yourself with the new design if you have this model.
7. Specifications
The Jikong Smart Active Balance BMS comes in various models with different specifications. Below is a general overview and a detailed table for reference.
7.1 General Specifications
- Brand Name: JIKONG
- Type: LI-ION Battery BMS (compatible with Li-ion, LiFePO4, LTO)
- Handware or Smart: SMART BMS
- Balance Function: Active Balance / Active Balanced BMS
- Charging Current: Up to 100A (model dependent)
- Charge and Discharge Port: Common Port BMS
- Communication Interface: RS485, Bluetooth (BT App), CAN (customization needed for some models)
- Function: Overcharge Protection, Over Discharge Protection, Overcurrent Protection, Short Circuit Protection
- Usage Scenario: Power BMS, Energy Storage BMS
- Certification: CE, FCC
- Origin: Mainland China
7.2 Detailed Specifications Table
Note: For specific model details, please refer to the product packaging or consult the manufacturer directly.
7.3 Product Dimensions and Weight
- Length: 22 cm
- Width: 17 cm
- Height: 5 cm
- Weight: 0.455 kg
8. Warranty and Support
Jikong is committed to providing high-quality products and customer satisfaction. For any inquiries or support needs, please use the contact information below.
8.1 Contact Information
- Email: cara2018@jk-bms.cn
- Whatsapp: +8619915562520
8.2 Return & Refund Policy
Please refer to the seller's return and refund policy for details regarding product returns, exchanges, and refunds. This information is typically available on the purchase platform or directly from the seller.
8.3 Security & Privacy
Your security and privacy are important. Jikong ensures that your personal details are protected and not shared with third parties without your consent. All payment methods are secure.
9. Production and Quality
Jikong BMS products undergo a rigorous manufacturing process and strict quality testing to ensure reliability and performance.
