Bidirectional power Converter for Electric Vehicle with Battery Charging and smart battery management system

The fundamental piece of any electric vehicle (EV) is its battery. The battery must be designed to satisfy the requirements of the motor(s) and charging system that a vehicle utilizes. In Previous system there is no protection of battery for charging and discharging. Users will put the battery charging based on time, due to overcharging battery life will be reduced. To overcome this problem, we developed a proposed system. This project proposes a design for the Bidirectional electric vehicle charger which is capable of doing both the Grid to Vehicle and Vehicle to Grid power transfer, and the interaction will be made through an automatic smart energy management system (EMS). A simple power electronics topology is used. The user can adjust the output of this charger by using the control signal provided by the PIC Micro controller. The main aim of this project is to design a Bidirectional power Converter for Electric Vehicle with Battery Charging and smart battery management system. Generator power will be given to the battery through charging circuit via bidirectional power converter. In this project we are using two voltage sensors to measure the voltages of battery and PMDC motor will be display on LCD module. If the battery voltage is <23volts microcontroller will switch on the generator power through relay to charge the battery.

The major building blocks of this project are:

• Regulated power supply
• PIC Microcontroller.
• PMDC generator.
• Voltage sensors.
• Chargeable Battery.
• DC –DC BUCK/BOOST converter.
• AC-DC converter (rectifier).
• LCD display.
• LED Indicators.
• Crystal oscillator
• Reset button.

  Software’s used:

• PIC-C compiler for Embedded C programming.
• PIC kit 2 programmer for dumping code into Micro controller.
• Express SCH for Circuit design.

Block Diagram: Video