1. Introduction
The JIKONG JK-B1A24S15P is a sophisticated Smart Battery Management System (BMS) designed for various lithium battery chemistries, including LiFePO4, Li-ion, and LTO. It supports battery configurations from 8S to 24S and handles a continuous current of 150A. This BMS features active balancing, communication interfaces like RS485 and CAN, built-in Bluetooth for APP control, and support for heating functions and LCD displays. It provides comprehensive protection for your battery pack, ensuring safety and longevity.
2. Product Overview
2.1 Functional Characteristics
- LED Bluetooth status indicator
- APP Bluetooth remote operation
- Battery capacity calculation
- High precision voltage acquisition (±3mV)
- High precision current acquisition
- Support information screen display
- Accurate time logging
- Support RS485 and CAN communication
- Support alarm function
- Support heating function
- Support GPS communication (Customized)
- Comprehensive protection: Overcharge, Over Discharge, Overcurrent, Short Circuit, Over Temperature, Low Temperature during charge
2.2 Active Balancing (Lossless Balancing)
The JIKONG Smart BMS employs active balancing technology to ensure optimal battery performance. This is achieved through energy transfer, moving energy from cells with higher voltage to cells with lower voltage, thereby achieving voltage balance with minimal energy loss. This continuous balanced current, ranging from 0.4A to 2A, maximizes battery consistency, improves battery range, and extends battery lifespan.
2.3 Application Scenarios
This BMS is suitable for a wide range of applications, including:
- E-bikes
- Electric Tricycles
- Low Speed Quads
- Forklifts
- Cleaning Cars
- Tourist Cars
- Industrial Drones
- Scooters
- RV Energy Storage
- Lithium battery packs
- Power Banks
- General Storage batteries
3. Package Contents
Please verify that all items are present in your package:
- BMS unit (x1)
- NTC temperature sensor (400mm) (x1)
- Balance Wires (750mm) (x1 set)
- Switch (500mm) (x1)
- Pack box (x1)
- GH1.25mm-4P to SM A connector-2.54-2P+2P-150mm+100mm-CAN-485 cable (x1)
4. Setup and Installation
4.1 Interface Overview
The JIKONG BMS features a rich set of interfaces to accommodate various functionalities:
- Heating wire: For battery heating functionality.
- CAN/RS485 interface: For external communication with other devices.
- GPS interface: For customized GPS communication.
- Display interface: For connecting an optional LCD display.
- Parallel connection interface: For connecting multiple BMS units in parallel.
- Alarm interface: For external alarm indicators.
- Balance with Acquisition interface: For connecting balance wires to individual cells.
- Temperature interface: For connecting NTC temperature sensors.
4.2 Wiring Diagram
Proper wiring is crucial for the safe and correct operation of the BMS. Please follow the diagram carefully:
Communication Cable Wiring (GH1.25mm-4P to SM A connector-2.54-2P+2P-150mm+100mm-CAN-485):
- The cable colors (white, yellow, red, black) must correspond to their definitions.
- Wrap all four wires with heat-shrink tubing for insulation and protection.
- The total wire length is 250mm (150mm + 100mm).
4.3 Optional Functions
The JIKONG BMS supports various optional functions, identified by specific letters in the model name. If you require customized features, please contact support.
- A: ACC (Accessory control)
- H: Heating (Battery heating function)
- P: Parallel (Parallel connection capability)
- T: 4 NTC (Support for 4 NTC temperature sensors)
- M: Dry contact (buzzer alarm)
- D: Charger detection
- O: One-line connection
- C: CAN (CAN communication protocol)
- R: RS485 (RS485 communication protocol)
- E: Pre-Charge
5. Operation
5.1 APP and Software Control
The JIKONG Smart BMS can be monitored and controlled via a mobile application (iOS/Android/HarmonyOS) and PC software. The APP supports multiple languages and provides a clear overview of battery information.
Key functions accessible via the APP/Software include:
- Modify PVD (Protection Voltage Detection) settings
- Charge ON/OFF control
- Discharge ON/OFF control
- Balance ON/OFF control
- Emergency ON/OFF
- Display Always On ON/OFF
- Smart Sleep On ON/OFF
- Timed Stored Data ON/OFF
- Disable Temperature Sensor ON/OFF
6. Specifications
| Feature | Specification (JK-B1A24S15P-HCR) | Specification (JK-B1A24S15P) |
|---|---|---|
| Number of Battery Strings (Li-ion) | 7S-24S | 7S-24S |
| Number of Battery Strings (LiFePO4) | 8S-24S | 8S-24S |
| Number of Battery Strings (LTO) | 12S-24S | 12S-24S |
| Working Voltage Range | 20-102V | |
| Balance Method | Active Balance | |
| Balance Current | 1A | |
| Continuous Discharge Current | 150A | |
| Continuous Charge Current | 150A | |
| Maximum Instantaneous Current | 300A | |
| Over Charge Protection Current | 10-150A | |
| RS485 Interface | Support | Optional |
| CANBUS Interface | Support | Optional |
| Battery Heating | Support | Optional |
| LCD Interface | Support | |
| Alarm Interface | Support | |
| Bluetooth Function | Support | |
| Protection Functions | Overcurrent protection, Overvoltage protection, Undervoltage protection, Over temperature protection, Low temperature protection, Short circuit protection | |
| Size (mm) | 162*102*20.4 | |
6.1 Heat Dissipation
The BMS casing is made of aluminum alloy and utilizes one-piece molding technology, providing a high thermal conductivity of <300[W/(m·K)]. The aluminum shell surface is sprayed with a layer of graphite material to ensure more uniform and balanced heat transfer, maximizing the heat dissipation effect.
7. Maintenance
- Regularly check all wiring connections for tightness and corrosion.
- Keep the BMS clean and free from dust and moisture.
- Ensure adequate ventilation around the BMS to facilitate heat dissipation.
- Periodically check the battery cell voltages via the APP to ensure proper balancing.
- Avoid exposing the BMS to extreme temperatures or direct sunlight for prolonged periods.
8. Troubleshooting
If you encounter issues with your JIKONG BMS, consider the following common problems and solutions:
- BMS not powering on: Check main power connections (B- and B+). Ensure the switch is correctly connected and activated.
- No communication with APP/PC software: Verify Bluetooth connection on your device. Ensure the BMS is powered. Check communication cable connections for RS485/CAN.
- Battery cells unbalanced: Confirm active balancing is enabled in the APP. Check balance wire connections to individual cells.
- Over-protection warnings: Review the specific protection triggered in the APP. This could indicate issues with charging/discharging current, voltage, or temperature. Adjust usage or inspect battery pack condition.
- Heating function not working: Ensure the heating wire is correctly connected and the function is enabled in the APP. Check temperature sensor readings.
For persistent issues, please refer to the Warranty and Support section for contact information.
9. Warranty and Support
The JIKONG JK-B1A24S15P Smart BMS comes with a 3-year warranty from the date of purchase, covering manufacturing defects and malfunctions under normal use conditions.
For technical support, inquiries, or warranty claims, please contact JIKONG customer service:
- Phone: +86 13068721990
- Email: jasonliu@jk-smartbms.com
