Outline/Features Position in vehicle/Internal block diagram Roadmap

Battery Management Unit

Mitsubishi Electric has developed and produces BMUs to realize highfunctionality and cost performance with integration of functions andapplying powertrain ECU development technologies for a compact &lightweight structure and low cost.• Light weight mold housing• Compactness with application of advanced microcomputer and

system LSI• High functionality & cost performance with function aggregation

and integration

Outline

Features

Battery Management Unit

Battery Management Unit (BMU) is a control unit to monitor the statusof the lithium-ion battery based on the voltage and temperature.

Outline/Features Position in vehicle/Internal block diagram Roadmap

Battery Management Unit

BMU is a controller to manage battery based on various information from CMU (Cell Monitor Unit)

Position in vehicle Internal block diagram

BMU：Battery Management UnitCMU：Cell Monitor Unit

CMU機能

BMUPower IC

A/D input

CPUInverter

EV ECUCAN

Drive circuitBattery

monito IC

12 V battery

High-voltage GND

Leakage detection

circuit

CAN

Battery monito IC

Battery monito IC

Battery module

Charger Cell monitor

BMU

Outline/Features Position in vehicle/Internal block diagram Roadmap

Battery Management UnitRoadmap

Func

tions

Cos

t vs

Perf

orm

ance

13FY09FY

Leakage sensor

All-in-One BMU(Leakage sensor

built-in BMU ＋ CMU)Leakage

sensor built-in BMU

BMU

1XFY(Under

development)2009：Started mass-production BMU2013：Started mass-production leakage detection sensor built-in BMU

BMU：Battery Management UnitCMU：Cell Monitor Unit

CMU