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Renesas Electronics Corporation

Humanoid Battery Management System

Overview

Description

The complete battery management and power control system for humanoid robots integrates cell balancing and monitoring, charge and discharge protection, pack voltage and current sensing, battery pack control, communications, auxiliary power, and active cooling. It is designed to deliver safe, real‑time battery supervision for dynamic humanoid platforms while providing accurate pack‑state information and controlled power delivery to actuators, motion control, and higher‑level AI subsystems.

System Benefits:

  • Enhances humanoid safety with real‑time monitoring and fast protection against electrical and thermal faults
  • Improves robot uptime by managing battery health, runtime, and graceful shutdown behavior under dynamic loads
  • Supports stable system performance by delivering accurate pack‑state data and controlled power to actuators and control subsystems
  • Simplifies design and accelerates development with optimized device selections available for both 24V and 48V architectures

Comparison

Applications

Block Diagram

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4:3 ratioConnector Line.1190Connector Line.1448Connector Line.1444Sheet.1Sheet.2Sheet.3Sheet.4WS205WS205WS205Connector Line.1192Charge/Discharge/ ProtectionCharge/Discharge/ ProtectionCharge/Discharge/ ProtectionAUX Power SupplyAUX Power SupplyAUX Power SupplyDC/DCDC/DCDC/DCCell Balancing/ Monitoring/ProtectorCell Balancing/ Monitoring/ProtectorCell Balancing/ Monitoring/ProtectorFuel GaugeFuel GaugeFuel GaugeProtectorProtectorProtectorBattery Front EndBattery Front EndBattery Front EndT-SenseT-SenseT-SenseConnector Line.1415Battery Pack Management ControllerBattery Pack Management ControllerBattery Pack Management ControllerCommunicationCommunicationCommunicationPower MOSFETPower MOSFETPower MOSFETGate DriverGate DriverGate DriverCircuit Breaker/E-FuseCircuit Breaker/ E-FuseCircuit Breaker/E-FuseVoltage & Current MonitoringVoltage & Current MonitoringVoltage & CurrentMonitoringCurrent Sense AmpCurrent Sense AmpCurrent Sense AmpOp AmpOp AmpOp AmpComparatorsComparatorComparatorMCUMCUMCUMemoryMemoryMemoryBluetoothBluetoothBluetoothWi-FiWi-FiWi-FiNFCNFCNFCCAN TRCAN TRCAN TRRS-485RS-485RS-485Analog Signal SwitchesAnalog Signal SwitchesAnalog Signal SwitchesConnector Line.1443Connector Line.1445Connector Line.1446Connector Line.1447Battery -Battery -Battery -DataDataDataConnector Line.1498Active Cooling ControlActive Cooling ControlActive Cooling ControlMCUMCUMCU3-Ph Gate Driver3-Ph Gate Driver3-Ph Gate DriverPower MOSFETPower MOSFETPower MOSFETConnector Line.1507Connector Line.1508LDOLDOLDOPMICPMICPMICBattery +Battery +Battery +Vertical Wire BundlennnSheet.133Vertical Wire Bundle.135nnnSheet.137Bi-directionalBlower MotorBlower MotorBlower MotorSheet.171BLDC MotorSquare.40Inductor.10Sheet.144Sheet.145Sheet.146Inductor.14Sheet.148Sheet.149Sheet.150Inductor.18Sheet.152Sheet.153Sheet.154Dynamic connectorDynamic connector.27Dynamic connector.25SquareSheet.159Square.41Sheet.161Sheet.162Sheet.163MotorSheet.165MMMUUUVVVWWWSheet.172External Balancing FETsExternal Balancing FETsExternalBalancing FETsMOSFET N-Type.1202Sheet.23Sheet.24Connector Line.1214MOSFET N-Type.1392Sheet.27Sheet.28MOSFET N-Type.1398Sheet.30Sheet.31MOSFET N-Type.1401Sheet.33Sheet.34Sheet.174Battery PackBattery PackBattery PackBattery.1186Battery.1187Battery.1188Battery.1189Connector Line.1191Connected signals arrow
Exiting Interactive Block Diagram

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