Technical specifications
BMS Mini S is a miniature full-featured centralized BMS for high-capacity lithium-ion batteries. It has many communication interfaces, an ability to collect information during the entire battery lifetime and an integrated DC/DC converter.
Specifications
| Parameter | Value |
| Battery voltage, V | 10* to 52 |
Current consumption @36 V, mA (maximum): work (no load) |
30 |
| Number of cells | 4 to 12 |
| Cell balancing type | Passive |
| Cell balancing current, mA, @ 4.2 V | 220 |
| Cell voltage measurement error, V | 0.003 |
| Cell temperature measurement error, °С | 2 |
| Output voltage of the internal DC/DC converter, V | 12 ± 1 |
| Output current of the internal DC/DC converter, A (maximum) | 3 |
| Number of programmable MOSFETs for contactors (60V, 5A) | 4 |
| Number of programmable discrete inputs (dry contact) | 4 |
| Number of programmable discrete outputs (5V, total 100mA) | 4 |
| Current sensor type | Hall-Effect sensor, bidirectional (LEM series: HASS, HTFS, DHAB) |
| Interfaces | 1xCAN / 1xRS-485 / 1xUSB |
| CAN output voltage, V | 5.0 ± 0.5 |
| CAN output current, mA (maximum) | 400 |
| Dimensions (length × width × height), mm | 125 × 117 × 17 |
| Weight, g | 210 ± 5 |
| Operating temperature range, °С | -40 to +85 |
| Headers X1, X3-X9 type | Molex series Micro-Fit |
* The minimum voltage for the internal 12V DC/DC converter is 14 Volts.
Overall and mounting dimensions
Typical battery system
Typical battery system based on the BMS Mini is shown on figure below.
Safety rules
The BMS can be connected to batteries with life-threatening and health-hazardous voltage levels. When working with high-voltage batteries, observe electrical safety regulations, use safety glasses, protective clothing, insulated tools, and appliances.