Rohde & Schwarz Utilizes Analog Devices' Technology to Create a Cutting-Edge Wireless Battery Management System Production Test Solution
Introduction and Highlights:
The automotive industry is embracing the advantages of wireless battery management system (wBMS) technology, thanks to the collaboration between Analog Devices, Inc. (ADI) and Rohde & Schwarz. Unlike traditional wired battery management systems (BMS), wBMS offers technical, environmental, and cost benefits. Notably, ADI's ISO21434 CAL4 compliant wBMS sets industry standards for cybersecurity and RF performance. To further enhance the development and production of wBMS, Rohde & Schwarz has introduced an automated test solution that streamlines verification and mass production testing processes.
Revolutionizing EV Battery Management:
The battery management system (BMS) plays a crucial role in electric vehicles (EVs), ensuring the efficient and safe management of the battery pack. By embracing wireless technology, EV manufacturers can overcome the limitations posed by wired BMS systems. Wireless communication between the Cell Monitoring Controller (CMC) and Battery Management Controller (BMC) facilitates simplified assembly, maintenance, and cell exchange, resulting in cost savings, reduced effort, and overall vehicle weight reduction.
ADI's Advanced wBMS Technology:
ADI, a renowned semiconductor leader and pioneer in battery management technology, has developed a cutting-edge wireless battery management system (wBMS). Currently implemented in multiple EV platforms, ADI's wBMS stands out as the first ISO21434 CAL4 compliant solution, meeting stringent cybersecurity standards. Its high RF performance and robustness significantly maximize battery capacity and overall lifespan.
Streamlining Production with Rohde & Schwarz:
Addressing the need for efficient wBMS production testing, Rohde & Schwarz, in collaboration with ADI, has introduced an ultra-compact automated test equipment (ATE) system. This comprehensive testing setup enables the calibration of wBMS modules, receiver and transmitter tests, as well as DC tests for both verification in the lab and mass production. The system includes the R&S CMW100 radio communication tester, the R&S WMT wireless automated testing software framework, and the new R&S ExpressTSVP universal test and measurement platform. To maintain an interference-free environment during radiated tests, the device under test (DUT) is placed within the R&S TS7124 RF shielded box.
Enhancing RF Robustness Testing:
To ensure optimal performance of wireless BMS in demanding RF environments, Rohde & Schwarz, in collaboration with ADI, has developed a state-of-the-art solution for RF robustness testing. This solution enables the capture and playback of real-world RF spectrum, allowing for realistic, repeatable, and efficient verification of wireless devices. During numerous test drives in diverse RF environments, an R&S FSW signal and spectrum analyzer monitors and sends the RF spectrum to an R&S IQW wideband I/Q data recorder. In a lab setting, the recorded spectrum profiles are played back using an R&S SMW200A vector signal generator, enabling meticulous analysis and testing.
Comprehensive Test Solutions by Rohde & Schwarz:
With a steadfast commitment to the automotive industry, Rohde & Schwarz offers an extensive portfolio of test solutions for wireless battery management systems (wBMS). From the development lab to the production line, their top-tier technical expertise ensures the delivery of innovative solutions that maximize wBMS performance and robustness throughout the entire product lifecycle.
Conclusion:
Juergen Meyer, Vice President Market Segment Automotive at Rohde & Schwarz, affirms their dedication to driving innovation and addressing wBMS challenges. Collaborating with ADI, Rohde & Schwarz strives to unleash the full potential offered by wBMS, ultimately enabling the automotive industry to embrace this cutting-edge technology. If you wish to learn more about the wBMS solution, visit Rohde & Schwarz's booth 6567 at the CES 2024 trade show in Las Vegas from January 9 to 12, 2024.
