Our Design

A compact, reliable, easy-to-use battery management system designed for use in high-performance, high-efficiency solar cars. Though this was designed for use in a solar car, it's not strictly limited to this application, and can be used in pretty much any multi-cell battery pack design.

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Our Team


Three graduating senior team members who want to develop a much better solution to our battery management system. Unfortunately, two of us won't get to see it in action in the car, but we have seen it through to getting most of its functionality operational, and will hopefully see it fully working in the Fall!

Ryan Babaie

Graduating this semester with a degree in Computer Engineering and a degree in Physics. Over the years, I've developed many of the electrical systems/PCBs that go into the vehicle, and have dreamed for a while of creating a better BMS solution. I'm super excited to have been a part of this project, and extremely pleased with our final result, as it's pretty close to being functional (after some more testing)!

Joshua Hoffman

Graduating this semester with degrees in Electrical Engineering and Physics. As the former powertrain team lead, I handled the vehicle’s motor system and have studied Analog IC design, Power Electronics, and Electric Energy Conversion. I am always thinking about how to keep the solar car moving, so I am excited to have the chance to improve our BMS. I have designed a few PCBs for GT Solar Racing in the past, but I am leaving the team with this one to remember me by.

Matthew Marting

Graduating this semester in computer engineering and starting my master's in electrical and computer engineering at Georgia Tech this fall. While I have studied and plan to continue studying VLSI, computer architecture, and IC fabrication in my classes, working on GT Solar Racing's batteries and BMS subteam has given me experience in embedded firmware development and PCB design. I am looking forward to testing the next revision of our BMS and integrating it into the solar car in graduate school!

ECE Advisor: Dr. Lukas Graber

VIP Advisor: Dr. David Rowland Smith

Features


Tons of experience with off-the-shelf equipment and robust design practices for other PCBs has led the team to want something better for our battery management system. Our BMS interfaces directly with CAN and has active balancing to ensure that we're getting the most use out of our battery's capacity.

Active Balancing

Unlike most commercial BMS solutions, this BMS is capable of efficiently transferring charge to lower-capacity cells rather than just burning off excess charge, leading to extended runtime, especially when every bit of energy counts, like in a solar car.

Low Cost

At $31/cell, this BMS is one of the cheapest options on the market today. This allows for the construction of a safe, reliable battery pack on a budget.

Reliable

Designed using best practices and principles used to develop the team's multitude of other race-proven PCBs, this BMS is designed to work reliably on the road and ensure safety at all times.

Video

Music credit to Bensound

ECE4012 Deliverables

Notice: no information here should be shared outside of Georgia Tech.

Proposal (pdf, pptx)
Final (pdf, pptx)
Proposal (pdf, docx)
Final (pdf, zip)
Schematics
Firmware

The board design files and firmware are tracked in Git with the rest of the team's boards/software.