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Wireless EV Battery Management System

Overview

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.

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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 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 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 Sheet.389 Bluetooth Low Energy Bluetooth Low Energy Bluetooth Low Energy Bluetooth LowEnergy

Battery Management

Battery Protectors, Monitors & Balancers

Battery Management

Battery Protectors, Monitors & Balancers

Battery Management

Battery Protectors, Monitors & Balancers

Bluetooth Low Energy

Bluetooth Low Energy

Bluetooth Low Energy

Bluetooth Low Energy

Bluetooth Low Energy

Bluetooth Low Energy

Bluetooth Low Energy

Bluetooth Low Energy

PMIC

Multi-Channel Power Management ICs (PMICs)

MCU

RH850 Automotive MCUs

IPD

Protected & Intelligent Power Devices

Videos & Training

Events & Webinars

News & Blog Posts

Battery Management System Trends, Issues and Solutions Blog Post Feb 14, 2022