1. BMS1601 Introduction
LiBat™ BMS1601 is a compact, next-generation, low-cost, all-in-one battery management system designed for industrial applications. This fully digital, standalone device serves as a ready-to-use solution tailored for 5S-16S standalone battery management systems. With an integrated power path, which includes a current sensor and precharge functionality, the BMS unit provides a comprehensive solution for a wide range of industrial battery applications.
Key Features:
- Small design 96.8mm x 87.5mm
- Compact, plug-and-play, all-in-one BMS solution
- Built in 6S - 16S cell measurement with 0.1mV resolution
- Integrated shunt sensor
- Adjustable passive balancing current
- Deep sleep and low power consumption modes
- Isolated digital communications, 1 x CANBus 2.0b, 1 x RS232, 1 x RS485
- 3 external, 1 internal NTC
- Configurable I/O, 2 logic outputs, 2 logic inputs, 2 Relay outputs
- Configurable 4ch high side switch for up to 3A loads with using internal or extarnal supply
- SD Card and USB peripherals for future features and custom developments
Table.1.1: BMS1601 Technical Specifications
| PARAMETER | SPECIFICATIONS |
|---|---|
| Power Source | Self or External Power (12V to Vbat). |
| 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 Isolated TTL Inputs (5V), 1x User button with led |
| Outputs | 2x Isolated TTL Outputs (5V), 2x Relay Outputs |
| Precharge | Configurable Software Timer |
| DFU Mode | Embedded bootloader for firmware upgrades. |
| Digital Interface-1 | 1x Isolated Half Duplex RS485 |
| Digital Interface-2 | 1x Isolated RS232 |
| Digital Interface-3 | 1x Isolated CANBus 2.0b |
| Communication Protocols | LiBat COM(RS232), JSON(RS232), Libat CAN v1 and v2 |
| Communication Protocol | Modbus RTU (RS485) |
| Current Sensor | Integrated Shunt for up to 250A |
| Power Path Controller | Integrated MOSFETs up to 250A for both charging and discharging |
| Number of cells | Up to 16 Cells. Minumum 6S |
| Cell Type | Any battery cell in voltage range |
| Minimum cell voltage | 250 mV |
| Maximum cell voltage | 4500 mV |
| Accuracy of Cell Voltage Measurement | ±2mV typical, < ±10mV 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 3 external sensor probes, 1x 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 | 160mm X 95mm X 13.85mm, ~200g |