Electric Vehicle Battery Management System Block Diagram

A battery management system is an electronic system that manages a rechargeable battery.

Electric vehicle battery management system block diagram. A smart battery charger that can be connected to the smart battery s bms through can bus or any other communication protocols charges the battery. As you can see the battery pack battery management system bms controller motor and the transmission unit forms the major components in an ev. Battery management systems bms are used to monitor and control power storage systems assure health of battery cells and deliver power to vehicle systems. Isolation products have numerous uses inside bms in the electrical domains of electric vehicles ev or hybrid electric vehicles hev.

Retention of propulsion battery protection during a crash electrical isolation of chassis from high. Vital parts of an electric car the battery pack is the fuel source of the car since there are hundreds of cells arranged to form a battery pack a special circuit is required to monitor these cells. Battery management systems have a great impact on the range cost and service life of electric vehicles which makes them a key success factor for this mobility revolution. Battery monitoring by estimating the battery pack state of charge soc and state of health soh during charging and discharging.

Plug in hybrid electric vehicles phev and battery electric vehicles bev are two quickly emerging technologies which use powerful electric motors and high voltage battery packs as the propulsion and energy sources. Here battery charger assp flash mcu ht45f5q x is the heart of ev charger circuitry with in built operational amplifiers opas and digital to analogue converters dacs that are necessary for battery charging function. This incident could have been easily avoided if the battery management system of the li ion battery pack was designed to detect prevent short circuits. Indeed the main functions of a battery management system for electric vehicles are.

The level 1 2 charging system for these vehicles consist of an ac dc converter to generate a dc voltage from the ac line. Battery optimization thanks to cell balancing that improves the battery life and capacity thus. Battery protection in order to prevent operations outside its safe operating area. A battery management system is the brain of a battery pack.

Bms developed by johnson controls saft for an electric vehicle using a li ion battery pack. A battery pack with a built in battery management system is a smart battery pack. Block diagram of the ev charging solution is shown in fig.