BMU (Module-Level Management) -Active Balancing
The Active Balancing BMU measures individual cell voltage and temperature for real-time battery monitoring. It transfers energy between cells to improve cell consistency, usable capacity and battery service life with lower energy loss. Daisy-chain or CAN interfaces enable communication between BMUs and data transmission to the BCU.
BMU-B32-68
BMU-B32-104
BMU-B32-52
BMU-B32-26
BMU-B32-16
BMU-B32-10
Product Specifications
| Item | BMU-B32-10 | BMU-B32-16 | BMU-B32-26 |
| Safety Rating | Rated isolation voltage: 1500 VDC; Withstand voltage test: 3100 VAC / 4380 VDC | Rated isolation voltage: 1500 VDC; Withstand voltage test: 3100 VAC / 4380 VDC | Rated isolation voltage: 1500 VDC; Withstand voltage test: 3100 VAC / 4380 VDC |
| Mounting Method | Built-in | Built-in | Built-in |
| Voltage Sampling Channels | 10 | 16 | 26 |
| Voltage Sampling Accuracy | Range: 0–5 V; Accuracy: ±3 mV @ 2.5 V–4.5 V, ±5 mV otherwise | Range: 0–5 V; Accuracy: ±3 mV @ 2.5 V–4.5 V, ±5 mV otherwise | Range: 0–5 V; Accuracy: ±3 mV @ 2.5 V–4.5 V, ±5 mV otherwise |
| Temperature Sampling Channels | 16 | 16 | 28 |
| Temperature Detection Accuracy | −40~125 °C, compatible with 10K & 100K NTC | −40~125 °C, compatible with 10K & 100K NTC | −40~125 °C, compatible with 10K & 100K NTC |
| Balancing Current | 0.5–3 A adjustable, in 0.5 A steps | 0.5–3 A adjustable, in 0.5 A steps | 0.5–3 A adjustable, in 0.5 A steps |
| Communication Interface | Daisy chain (contact technical support for CAN communication) | Daisy chain (contact technical support for CAN communication) | Daisy chain (contact technical support for CAN communication) |
| DI Channels | 2 | 2 | 0 |
| DO Channels | 1 | 1 | 0 |
| Altitude | ≤4000 m | ≤4000 m | ≤4000 m |
| Connectors | YXT 16/40/36 | YXT 16/40/36 | YXT 6, Hirose 40 |
| Dimensions | 160 mm × 95 mm × 25.5 mm | 160 mm × 95 mm × 25.5 mm | 106 mm × 83 mm × 30 mm |
| Item | BMU-B32-52 | BMU-B32-68 | BMU-B32-104 |
| Safety Rating | Rated isolation voltage: 1500 VDC; Withstand voltage test: 3100 VAC / 4380 VDC | Rated isolation voltage: 1500 VDC; Withstand voltage test: 3100 VAC / 4380 VDC | Rated isolation voltage: 1500 VDC; Withstand voltage test: 3100 VAC / 4380 VDC |
| Mounting Method | Built-in | Built-in | Built-in |
| Voltage Sampling Channels | 52 | 68 | 104 |
| Voltage Sampling Accuracy | Range: 0–5 V; Accuracy: ±3 mV @ 2.5 V–4.5 V, ±5 mV otherwise | Range: 0–5 V; Accuracy: ±3 mV @ 2.5 V–4.5 V, ±5 mV otherwise | Range: 0–5 V; Accuracy: ±3 mV @ 2.5 V–4.5 V, ±5 mV otherwise |
| Temperature Sampling Channels | 56 | 68 | 112 |
| Temperature Detection Accuracy | −40~125 °C, compatible with 10K & 100K NTC | −40~125 °C, compatible with 10K & 100K NTC | −40~125 °C, compatible with 10K & 100K NTC |
| Balancing Current | 0.5–3 A adjustable, in 0.5 A steps | 0.5–3 A adjustable, in 0.5 A steps | 0.5–3 A adjustable, in 0.5 A steps |
| Communication Interface | Daisy chain (contact technical support for CAN communication) | Daisy chain (contact technical support for CAN communication) | Daisy chain (contact technical support for CAN communication) |
| DI Channels | 0 | 0 | 0 |
| DO Channels | 0 | 0 | 0 |
| Altitude | ≤4000 m | ≤4000 m | ≤4000 m |
| Connectors | YXT 16/40 | YXT 16/40 | YXT 16/36×4/40×4 |
| Dimensions | 256 mm × 80 mm × 25 mm | 300 mm × 100 mm × 25 mm | 265 mm × 85 mm × 40 mm |
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