Battery Management System

Huawei BMS consists of BCU (Battery Control Unit) and BMU (battery monitor unit). BCU is responsible for charge & discharge management, SOX estimation, fault protection, and communication with the vehicle system. BMU is in charge of battery voltage and temperature sampling and battery balancing.

Home DriveONE NEV Power Domain Solution Battery Management System

Voltage Power Compatibility

SOC Error within ±3%

Technical Specifications

Item	Specifications
BCU Dimensions （X * Y * Z）	250mm100mm20mm
BMU Dimensions （X * Y * Z）	170mm100mm20mm
State Estimation Error	SOC ≤ ±3%; SOH ≤ ±3%
Operating voltage range	9～16 Vdc
Total voltage detection	0～1000 Vdc，±0.5%F.S.
Cell voltage detection	±3 mV, can collect up 56-channel voltages
Cell temperature detection	±1 ℃, can collect up to 24-channel temperatures
Functional safety	ISC 26262 ASIL C

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