1. Introduction
The TDT Smart BMS (Battery Management System) is designed for advanced management of Li-ion and LiFePO4 battery packs, supporting configurations from 8S to 16S and current ratings from 50A to 200A. It features multiple communication interfaces including RS485, RS232, CAN, and Bluetooth, enabling real-time monitoring and intelligent control. This BMS is ideal for home energy storage systems, RVs, portable energy solutions, and telecom energy storage applications, offering comprehensive protection and efficient battery management.
2. Key Features
- Supports Li-ion and LiFePO4 battery packs from 8S to 16S.
- Available in 50A, 100A, 150A, and 200A current ratings.
- Multi-communication interfaces: RS485, RS232, CANBUS, and Bluetooth.
- Real-time monitoring of battery parameters via mobile APP, LCD screen, and host computer.
- Comprehensive protection functions: Over-voltage, under-voltage, over-charge, over-discharge, over-current, short-circuit, and temperature protection.
- High-precision SOC (State of Charge) and SOH (State of Health) estimation with self-learning algorithm.
- Supports parallel connection and communication of up to 15 battery packs.
- Compatible with mainstream inverters (e.g., PYLONTECH, GOODWE, Growatt, Victron Energy).
- Fast intelligent pre-charging function.
- Reserved interfaces for Active Balancer, Relay, Fan, and low-temperature charging/heating functions.
- Optional 4.3" or 2.4" touch screen display.
3. Packing List
Upon opening the package, please verify that all the following items are included:
Figure 3.1: Contents of the TDT Smart BMS package.
- BMS Mainboard
- Key Screen (Optional, type may vary)
- Interface Board
- Screws
- Bluetooth Module
- Sampling Cables
- Transfer Cables
4. Specifications
The TDT Smart BMS offers various configurations to suit different battery pack requirements. Below are the general specifications:
| Attribute | Value |
|---|---|
| Product Name | 8S-18S 50A-200A Li-ion/LiFePO4 Smart BMS |
| Model Number | TDT-6032 |
| Accessory Type | Battery Accessories |
| Brand Name | JBD |
| Origin | Mainland China |
| Certification | CE, FCC, RoHS, ISO9001 |
| Voltage Range | No voltage (configurable based on cell count) |
| Electronic | No |
| Charger Included | No |
| Battery Included | No |
| High-concerned chemical | None |
| Over charge protection | Yes |
| Over discharge protection | Yes |
| Over current protection | Yes |
| Short-circuit protection | Yes |
| Balance function | Yes |
| Temperature sensor function | Yes (6 sensors: 4 for battery pack, 1 for ambient, 1 for MOS) |
| Sample/OEM/ODM | Acceptable |
| MOQ | 1pcs |
| Packaging | Bubble bag/box |
| BMS Mainboard Dimensions | 300*100*32mm |
| Interface Board Dimensions | 160*45*26mm |
| Key Screen Dimensions | 105*66mm (for 4.3" screen) |
Note: The "Voltage range" is determined by the number of cells (S) in your battery pack, which the BMS supports from 8S to 16S.
5. Setup and Installation
5.1 Wiring Diagram
Carefully follow the wiring diagram below to connect your TDT Smart BMS to the battery pack and loads. Incorrect wiring can damage the BMS or battery.
Figure 5.1: TDT Smart BMS Wiring Diagram.
5.2 Cable Connection Precautions
- Use the correct signal cable. Cables from different manufacturers are not interchangeable.
- When connecting the signal cables to the battery pack, do not insert the signal cable to the BMS first.
- Follow the strict battery signal cable insertion order on the BMS:
- Connect B- first.
- Then insert the battery cables from B0 to B+ in ascending order.
- Finally, connect B+.
- Only connect the load or charger after all cables are installed.
- When disassembling, reverse the order:
- First, unplug the charger or load.
- Then remove the battery signal cables from B+ to B0 in descending order.
- Finally, remove B-.
Important: B-cables should be thick. We recommend using three 6 AWG silicone cables for robust connections.
5.3 Main Functions and Port Indication
Figure 5.2: BMS Mainboard, Interface Board, Key Screen, and Port Indication Chart.
The BMS mainboard (300*100*32mm), interface board (160*45*26mm), and key screen (105*66mm) are interconnected as shown in the port indication chart. The system includes 6 temperature sensors (4 for battery pack, 1 for ambient, 1 for MOS) and an active balancer controllable via the host computer.
Refer to the "Definition of signal port" table for detailed pin functions:
Figure 5.3: Definition of Signal Ports.
| Tag Number | Connector | Pin Function Definition | Note |
|---|---|---|---|
| P11 | Voltage detection interface | Connect to Positive Side of Cell 1 to Cell 6 | B1-B6 |
| P12 | Voltage detection interface | Connect to Positive Side of Cell 7 to Cell 11 | B7-B11 |
| P13 | Voltage detection interface | Connect to Positive Side of Cell 12 to Cell 13 | B12-B13 |
| P14 | Voltage detection interface | Connect to Positive Side of Cell 14 to Cell 16 | B14-B16 |
| P15 | Bluetooth interface | Bluetooth interface | |
| P16 | LCD interface | LCD interface (screen on the back as shown in the picture) | |
| P4 | Fan interface | Connecting fan (not available by factory default) | |
| P3 | Relay interface | Connecting relay control (not available by factory default) | |
| P2 | Heating module interface | Heating module (not available by factory default) | |
| P5 | Active balancer interface | External active equalization control | |
| P6 | On/off interface | On/off switch interface of integrated style board (no for interface board) | |
| P7 | Programmer interface | Programmer interface (Customers don't need to use this interface) | |
| P8 | Socket of interface socket | Connecting interface board |
5.4 Communication Interface Introduction
The TDT Smart BMS supports various communication protocols. The interface board provides dedicated ports for RS232, RS485, and CAN communication.
Figure 5.4: Communication Interface Board (6032-JKB).
| Interface | Pin | Description |
|---|---|---|
| RS232 (6P6C vertical RJ11 sockets) | 2 | NC |
| 3 | TX (veneer) | |
| 4 | RX (veneer) | |
| 5 | GND | |
| RS485 (8P8C vertical RJ45 sockets) | 1, 8 | RS485-B |
| 2, 7 | RS485-A | |
| 3, 6 | GND | |
| 4, 5 | NC | |
| CAN (8P8C vertical RJ45 sockets) | 1, 2, 3, 6, 8 | NC |
| 4 | CANH | |
| 5 | CANL | |
| 7 | GND |
Note: RS485 and CAN communication tools (adapters) may need to be purchased separately if not included in your package.
6. Operation
6.1 Bluetooth APP Connection and Monitoring
The TDT Smart BMS can be monitored and controlled via a mobile application called "BMS meta".
Video 6.1: Demonstration of cable connection and Bluetooth APP setup.
- Ensure all power and sampling cables are correctly connected to the BMS and battery pack as per the wiring diagram.
- Connect the Bluetooth module to the BMS (P15 interface).
- On your mobile device (Android or iOS), search for "BMS meta" in your respective app store and install it.
- Open the "BMS meta" app.
- Select the corresponding Bluetooth device name (e.g., "XDZN_001_B965") from the list to connect.
- Upon successful connection, the indicator light on the Bluetooth module will illuminate, and the app will display real-time battery status.
The app provides 24-hour real-time monitoring of various parameters:
- Current, Voltage, Power, Cycles: Overall battery pack status.
- Temperature: Environmental (ENV), MOS, and individual cell temperatures (Cell T(C)1-4).
- Battery Status: Max Voltage, Min Voltage, Average Voltage, Differential Voltage for each cell.
- Allows switching for controlling charge/discharge.
Figure 6.1: BMS meta Mobile Application Interface.
Note: Some parameters cannot be modified directly through the mobile app.
6.2 LCD Screen Display
The optional LCD key screen provides a direct visual interface for monitoring battery information.
Figure 6.2: LCD Key Screen displaying battery status (Current, Min/Max Temperature, Voltage, SOC).
The key screen displays essential battery parameters such as current, minimum and maximum temperatures, voltage, and State of Charge (SOC). Navigation through menus (Analog Info, BMS Status, Para Setting, Sys Setting) is typically done via physical buttons on the screen module.
Figure 6.3: Optional Touch Screen Displays.
6.3 Host Computer Software
For advanced monitoring and configuration, the TDT Smart BMS can be connected to a host computer using the dedicated software.
- Connect the BMS to your computer using an RS485 or RS232 adapter (RJ45 to USB adapter recommended, purchased separately).
- Ensure the wiring connections are correct before communication.
- Launch the host computer program.
- You can view multiple information such as voltage, current, temperature, and strings of the battery pack.
- The software allows you to freely adjust multiple protection values, including overcharge protection, overdischarge protection, overcurrent protection, temperature protection, and balance voltage.
Figure 6.4: Host Computer Software Interface.
Note: Technical specifications restrict certain parameters on the upper computer to prevent setting errors and improve fault tolerance.
7. Maintenance
- Regularly check all cable connections for tightness and signs of wear or corrosion.
- Keep the BMS and battery pack in a clean, dry, and well-ventilated environment.
- Monitor battery parameters periodically using the mobile app or host computer to ensure optimal performance and detect any anomalies.
- Ensure proper heat dissipation. The BMS has temperature sensors to prevent overheating.
- If any issues arise, refer to the troubleshooting section or contact support.
8. Troubleshooting
This section provides solutions to common issues you might encounter with your TDT Smart BMS.
| Problem | Possible Cause | Solution |
|---|---|---|
| BMS not powering on/no display | Incorrect B+ or B- connection, loose cables, faulty power supply. | Verify all power connections are secure and correctly polarized. Check the battery voltage. |
| Bluetooth APP not connecting | Bluetooth module not powered, incorrect device selected, app issues. | Ensure Bluetooth module is connected to P15. Select the correct device name in the app. Restart the app or phone. |
| Inaccurate voltage/current readings | Loose sampling cables, incorrect calibration (advanced users). | Check all sampling cable connections (P11-P14). Ensure they are inserted in the correct ascending order. |
| Over-protection warnings/shutdowns | Battery cells out of balance, over-current draw, extreme temperatures. | Check individual cell voltages via app/LCD. Reduce load. Ensure adequate ventilation. Review protection parameters in host software. |
| Host computer software connection issues | Incorrect adapter, driver issues, wrong COM port selected. | Ensure you are using a compatible RJ45 to USB adapter. Install necessary drivers. Select the correct COM port in the software. |
9. User Tips
- Always double-check your wiring before applying power to prevent damage.
- For optimal performance and longevity, ensure your battery cells are well-balanced. The active balancer feature helps with this.
- Utilize the mobile app for convenient, on-the-go monitoring of your battery's health.
- For advanced configuration and detailed diagnostics, connect the BMS to a host computer.
- When connecting multiple battery packs in parallel, ensure all BMS units are properly configured for parallel communication.
- If using the host computer software, consider purchasing the recommended RJ45 to USB adapter from the manufacturer to ensure compatibility.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please contact your vendor or the manufacturer directly. Ensure you have your product model number (TDT-6032) and purchase details available when seeking support.
The product is certified with CE, FCC, RoHS, and ISO9001 standards, ensuring quality and compliance.