Overview

Description

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

System Benefits:

  • Eliminates the traditional wire harnesses required in a BMS, saving weight and space while improving flexibility
  • Easier battery replacement and reuse throughout the life cycle
  • Renesas’ low power Bluetooth® Low Energy (LE) 5.1 device*1 for wireless BMS is ideal for battery life cycle standardization based on the open Bluetooth LE standard, instead of a proprietary wireless protocol unique to a single supplier
  • Single-cell/Bluetooth LE with a Bluetooth LE MCU module for a flexible cell attachment/detachment concept
  • A system-level functional safety concept for the wireless BMS is under preparation

*1: DA14531 is industrial grade. Automotive grade product is under development.

Comparison

Applications

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AS237 AS237 AS237 AS237 12V Battery 12V Battery 12V Battery 12V Battery 12V Battery 12V Battery 12V Battery 12V Battery Signal.137 Sheet.138 Sheet.139 Sheet.140 Sheet.141 Battery Management 1 Battery Management BatteryManagement Bluetooth Low Energy 1 Bluetooth Low Energy * Bluetooth LowEnergy * Connector double arrow.204 Connector Arrow.207 Connector Arrow.208 Connector dotted line.209 SPI 1 SPI SPI Signal.331 Sheet.214 Sheet.215 Sheet.216 Sheet.217 Battery Management 2 Battery Management BatteryManagement Bluetooth Low Energy 2 Bluetooth Low Energy * Bluetooth LowEnergy * Connector double arrow.228 Connector Arrow.229 Connector Arrow.208 Connector dotted line SPI 2 SPI SPI Signal.234 Sheet.235 Sheet.236 Sheet.237 Sheet.238 Battery Management 3 Battery Management BatteryManagement Bluetooth Low Energy 3 Bluetooth Low Energy * Bluetooth LowEnergy * Connector double arrow.249 Connector Arrow.250 Connector Arrow.251 Connector dotted line.252 SPI 3 SPI SPI Bluetooth Low Energy Bluetooth Low Energy Bluetooth Low Energy Bluetooth LowEnergy PMIC PMIC PMIC CAN/LIN CAN/LIN CAN/LIN Other ECUs Other ECUs OtherECUs Connector double arrow Connector double arrow.262 Connector double arrow.263 Connector Line Connector double arrow.265 Peripheral Peripheral Peripheral Central Central Central MCU MCU MCU IPD IPD IPD Connector Arrow Connector Line.273 * Industrial Grade * Industrial Grade * Industrial Grade Cell Voltage, Temperature Cell Voltage, Temperature Cell Voltage,Temperature Cell Balancing Command Cell Balancing Command Cell BalancingCommand UART/SPI UART/ SPI UART/SPI Fan Fan Fan Pump Pump Pump Heater Heater Heater Relay Relay Relay Connector Line.376 Battery 1 Battery 1 Battery 1 Battery 1 Battery 2 Battery 2 Battery 2 Battery 2 Battery 3 Battery 3 Battery 3 Battery 3
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