Battery Characterization and PCB Assembly for High-Voltage Electric Vehicle

As part of a project to develop a high-speed electric vehicle (Hyperloop pod), I worked on battery testing and electrical integration. The vehicle’s power system was assembled from ten 8S4P lithium-ion  modules with a Lithium Nickel Manganese Cobalt Oxide (NMC) chemistry, each with a nominal voltage of 28.8 V, forming a 288 V battery capable of delivering 80 A continuously. I conducted charge/discharge cycling, internal resistance measurements, and thermal profiling to evaluate cell performance and verify that the modules could operate safely under expected loads. These tests were used to support thermal design decisions and inform parameters for state-of-charge estimation and system protection.

In addition to battery testing, I assembled several of the main electrical subsystems. This included soldering and wiring the sensor hub PCBs, the isolated flyback converter board, and the buck converter modules. The work involved both through-hole and surface-mount soldering, including 0201-sized components, with attention to compact layout and high-current handling requirements. All assemblies were completed within tight mechanical constraints and in preparation for integration into the full vehicle system. I also selected and integrated sensors across the subsystems to monitor voltage, current, and battery temperatures, with real-time data displayed on a GUI.

Explore with Tags