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Wireless EV Battery Management System

Overview

Description

Renesas' automotive wireless battery management system (BMS) eliminates the need for wire harnesses, enabling flexible battery placement and simplifying the development of scalable electric vehicles.

System Benefits:

  • Eliminates traditional wire harnesses in a BMS, reducing weight and space while enhancing design flexibility.
  • Simplifies battery replacement and reuse throughout the battery's life cycle.
  • Utilizes Renesas' low-power Bluetooth® Low Energy (LE) device, ideal for battery life cycle standardization based on the open Bluetooth LE standard, avoiding reliance on proprietary wireless protocols tied to a single supplier.
  • Offers a single-cell design with a Bluetooth LE MCU module, supporting a flexible cell attachment/detachment concept.

Comparison

Applications

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AS237AS237AS237AS23712V Battery12V Battery12V Battery12V Battery12V Battery12V Battery12V Battery12V BatterySignal.137Sheet.138Sheet.139Sheet.140Sheet.141Battery Management 1Battery ManagementBatteryManagementBluetooth Low Energy 1Bluetooth Low EnergyBluetooth LowEnergyConnector double arrow.204Connector Arrow.207Connector Arrow.208Connector dotted line.209SPI 1SPISPISignal.331Sheet.214Sheet.215Sheet.216Sheet.217Battery Management 2Battery ManagementBatteryManagementBluetooth Low Energy 2Bluetooth Low EnergyBluetooth LowEnergyConnector double arrow.228Connector Arrow.229Connector Arrow.208Connector dotted lineSPI 2SPISPISignal.234Sheet.235Sheet.236Sheet.237Sheet.238Battery Management 3Battery ManagementBatteryManagementBluetooth Low Energy 3Bluetooth Low EnergyBluetooth LowEnergyConnector double arrow.249Connector Arrow.250Connector Arrow.251Connector dotted line.252SPI 3SPISPIPMICPMICPMICCAN/LINCAN/LINCAN/LINOther ECUsOther ECUsOtherECUsConnector double arrowConnector double arrow.262Connector double arrow.263Connector LineConnector double arrow.265PeripheralPeripheralPeripheralCentralCentralCentralMCUMCUMCUIPDIPDIPDConnector ArrowConnector Line.273Cell Voltage, TemperatureCell Voltage, TemperatureCell Voltage,TemperatureCell Balancing CommandCell Balancing CommandCell BalancingCommandUART/SPIUART/ SPIUART/SPIFanFanFanPumpPumpPumpHeaterHeaterHeaterRelayRelayRelayConnector Line.376Battery 1Battery 1Battery 1 Battery 1Battery 2Battery 2Battery 2 Battery 2Battery 3Battery 3Battery 3 Battery 3Sheet.389Bluetooth Low EnergyBluetooth Low EnergyBluetooth Low EnergyBluetooth LowEnergy
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