1. BMS1810 Introduction
LiBat™ BMS1810 is a compact battery management system tailored for distributed master-slave battery applications. This fully digital, standalone device is a ready-to-use solution crafted for 5S-18S master battery management systems. Serving as a versatile solution, it seamlessly adapts to high voltage, high power, and high energy applications through the incorporation of external electrical components like contactors and current sensors. Once set with the correct system parameters, the BMS1810 operates seamlessly without the need for ongoing user interaction, ensuring an efficient and hassle-free experience in managing battery systems.
Key Features:
- Small design 96.8mm x 87.5mm
- Compact, plug-and-play BMS
- Built in 5S - 18S cell measurement with 0.1mV resolution
- Dual channel external current measurement
- Adjustable passive balancing current
- Deep sleep and low power consumption modes
- 1 x CANBus 2.0b, 2 x RS232, 2 x RS485
- 5 external, 2 internal NTC
- Configurable I/O, 2 logic output, 2 logic input, 2 O.D. output
- Up to 16 slave connections via isolated communication
- Compatible with distributed slave connection
- BMS solution for up to 882V battery packs.
Table.1.1: BMS1810 Technical Specifications
| PARAMETER | SPECIFICATIONS |
|---|---|
| Power Source | Self or External Power. |
| Power Consumption | Power Down: ~0.050 mW , RUN State: ~1015mW |
| Wake Up Trigger | User Button |
| LEDs | Power, Run/Error Status |
| Relays | 2x Relay Outputs |
| Inputs | 2x Button or Short Circuit Inputs, 1x User button with led |
| Outputs | 2x TTL Outputs(5V, 12v or External level selectable), 2x Open Drain Outputs |
| Precharge | Configurable Software Timer |
| DFU Mode | Embedded bootloader for firmware upgrades. |
| Digital Interface-1 | 1x Half Duplex RS485 |
| Digital Interface-2 | 2x RS232 |
| Digital Interface-3 | 1x CANBus 2.0b |
| Communication Protocols | LiBat COM, JSON |
| Communication Protocol | Modbus RTU |
| Current Sensor | Compatiable with 5V external current sensors |
| Number of cells | Up to 18 Cells. Minimum 15 V |
| Cell Type | Any battery cell in voltage range |
| Minimum cell voltage | 250 mV |
| Maximum cell voltage | 4500 mV |
| Accuracy of Cell Voltage Measurement | ±1.6mV typical, < ±8.3mV max. |
| Balance Method | Passive Balancing |
| Balance Current | 420mA @ 4.2Vdc cell voltage |
| Balance Power | 2W max. per cell |
| Temperature Sensor Type | NTC, 10KΩ @ 25 °C |
| Temperature Sensor Accuracy | ±1.5 °C (depends on sensor sensitivity) |
| Number of Temperature Sensor | Up to 5 external sensor probes, 2x On board NTC |
| Operating Temperature | -20 °C to +70 °C (-4° F to +158° F) |
| Relative Humidity | 5% to 95% (non-condensing) |
| Dimensions and Weight | 96.8 mm X 87.5 mm X 13.85 mm, 150g |