FS-BMS v1 | AU Dolphins

We are AU Dolphins, a Formula Student team from Denmark, representing Aarhus University. The team was founded in 2023 from the remains of a former one, and there are approximately 60 students currently in the team from various study lines like Mechanical Engineering, Electrical Engineering, Computer Technology, Information Technology, Journalism and Mathematics Economics to name a few.

Even though we are one of the smaller racing teams regarding both members and resources, we strive to become successful in our field by having a working car with self-built components by the start of summer 2026.

The biggest challenge we have faced until now is the FS Switzerland competition in the summer of 2025, where we participated in the static events of the competition. This is the part of the competition where all engineering and management decisions are tested and judged. The static event consists of several smaller events. These are: Cost and manufacturing, Engineering design and Business presentation. The car also went through scrutineering, and it was praised by the judges for what what's done with the limited recourses.

We ended up as 2nd in Junior Design, 3rd in Junior Cost and 3rd in Junior Business, so even though the car couldn’t be driven, it was still valuable learning providing the background for the project on which we are working now.

Figure 1. The team in Switzerland with car 'Flipper'

We are in the middle of designing and manufacturing our first driving Formula Student Electric race car. The new car is called Winter, and a rendering of the current design can be seen in Figure 2.

Figure 2. The vision for our current car 'Winter'

A critical part of the car is our Battery Management System, responsible for monitoring parameters like the voltage and temperature of our cells for ensuring the battery pack is operating in a safe and efficient manner within the Formula Student regulations. It plays a key role in safety and performance, enabling us to collect valuable data that can be used to further improve our designs for better optimization and performance.

This project aims to design, manufacture and integrate a custom BMS solution, based on the open sourced foxBMS platform, but tailored to our car, giving us full control over the functionality of the platform.

Figure 3. Slave board for BMS PCB

The BMS will be incorporated within the Tractive System Accumulator Container (TSAC), where all the cells also will be located. Each battery segment will house a BMS slave board, and the Master will be placed in the front compartment of the TSAC, together with other essential components.

Figure 4. Battery segment (up) and the complete TSAC module w/o lid (down)

Support for this project will directly contribute to the manufacturing of the BMS platform for our first driving electric car, helping us to gain valuable engineering experience while competing at an international level. Therefore, we would like a sponsorship for our prototype BMS master and slaves including the interfacing board, so we can start testing for the battery pack in the car.

For more information about our team and future projects, visit our website at https://audolphins.dk/ or find us on Instagram @audolphins.

We are looking forward to hearing your decision!

We have uploaded the three PCBs and their respective stencils, and the product numbers for these orders are written below.

Product numbers:

Master board: W1075382AS3P3

Master stencil: S-3P4W1075382A

Slave board: W1075382AS3P5

Slave stencil: S-3P6W1075382A

Interface board: W1075382AS3P7

Interface stencil: S-3P8W1075382A