The increasing demand for electric vehicles has made efficient battery management essential for safety and performance. This project presents a Battery Management System (BMS) using INA219 and DS18B20 sensors with SOC and SOH calculation. The system is designed to monitor and protect a rechargeable battery pack by continuously measuring key parameters such as voltage, current, and temperature. A PIC microcontroller is used as the main control unit, which collects data from the INA219 sensor for voltage and current measurement and the DS18B20 sensor for temperature monitoring. Based on these parameters, the system calculates the State of Charge (SOC) and State of Health (SOH) of the battery. The measured values are displayed on an LCD for real-time monitoring. The system also includes protection features such as over-temperature alert using a buzzer, automatic cooling using a fan, and controlled charging through relay. A DC motor is used as a load to simulate real-time operation. This BMS improves battery efficiency, enhances safety, and extends battery life, making it suitable for electric vehicle applications.

  The major building blocks of this project are:  

• Step Down transformer.
• Charging circuit.
• ARDUINO UNO Microcontroller.
• Temperature sensor.
• Voltage sensor.
• Current sensor.
• Buzzer.
• 12V Battery pack
• Relay.
• LCD display.
• LED Indicators.

  Software’s used:

• Embedded C programming.
• Arduino UNO for dumping code into Micro controller.
• Express SCH for Circuit design.

 

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