DESIGN OF SAFETY SYSTEM FOR ELECTRIC VEHICLE WITH CAN BUS COMMUNICATION

• Main Author: Avinta Purwanto, Nicco
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/43094
• Institution: Institut Teknologi Bandung

The electric vehicle technology is currently being developed in a very fast pace worldwide. This technology uses electric motor and battery instead of internal combustion engine and fossil fuel thus it does not produce carbon footprint. This technology has its own problem especially for its safety. Electric vehicle uses Li-ion batteries which are fragile when exposed to extreme conditions and may trigger chain reactions of short circuits and fire. In this research we develop a system with the ability to monitor the condition of battery system in electric vehicle, evaluate the condition when a failure occurs, and take action to keep the system safe from excess failure is proposed. The system employs two Arduino microcontrollers for data acquisition and decision making, and Controller Area Network (CAN) Bus protocol for communication. The Decision-Making Arduino assess the condition of the system using the data acquired from the Data Acquisition Arduino. Action(s) will be executed if a failure such as collision, overcurrent, fire and gas, overheat, overvoltage, and undervoltage. In the event of such failure occurs, actions are executed such as turning on cooling fan, triggering range extender, and enforcing emergency shut down. Results of battery monitoring will be shown on the Human Machine Interface using CAN Bus including alarms when a failure occurs. The result of this research is a system with CAN Bus communication speed of 1 Mbps and sampling time 100 ms with delay time between the display of microcontroller and the display of HMI 170 ms.