The demand for technologies that address environmental challenges such as climate change are increasing the workload at Oxford-based engineering consulting firm Mach One Design. We have seen a greater focus from clients on innovations in renewable energy. We’re noticing more work coming through in the electrical energy generation sphere, there’s a lot more interest in battery technology, as well as renewable energy — things like solar, wave, biofuels and wind turbines.

The following case study comes from a client who is based in Oxfordshire. The company develop intelligent battery management and control technology to increase the lifetime and reliability of lithium-ion battery packs for stationary energy storage and electric vehicles. Their product is a game-changing combination of hardware and software that optimizes the use of lithium-ion cells within a battery pack.

Project: EMI Troubleshooting Work on a Large-scale Battery Management System

Timescale: One day site visit to customer’s office

Scopes of work:

A battery management system experienced both conducted and radiated emission issues during the research and development stage. Early pre-compliance EMC tests show that the emissions occur mainly in the 10s of MHz range. 

We propose 1 day troubleshooting work at the client’s office. Scopes of work are therefore defined as below:

  1. To perform EMC pre-compliance tests to benchmark the performance of the device under test (DUT). The results will be compared with the latest lab results, including both radiated and conducted emission tests.  
  2. To troubleshoot the issues by using near-field and current probe methods.  
  3. To design solutions to the issues identified during the troubleshooting session. The solutions should be cost-effective for the clients to implement. 

Using our step-by-step troubleshooting approach, we were able to help the clients quickly identify the issues in the system and applied fixes before the end of the day. It was a great co-working experience as the clients’ engineering team is a team of enthusiastic and capable engineers who grasp the knowledge at an amazing speed. I certainly enjoyed this one-day trip.

Conducted Emissions – Before
Conducted Emissions – After
Radiated Emissions – Before and After