In the first half of 2024, ICARE postgraduate student Zhang Jingyu embarked on a fulfilling and unforgettable internship experience at OPmobility (formerly known as Plastic Omnium), a globally leading company renowned for its technological innovation and commitment to sustainable development. During this internship, the student involved in the research and development of the world's first 70MPa hydrogen storage system, witnessing the immense potential of hydrogen energy technology. This internship has marked the beginning of a new chapter in his international professional career.

“Upon joining OPmobility, I coincidentally experienced the company's rebranding. The change from Plastic Omnium to OPmobility marked a significant strategic shift for the company – transitioning from a traditional automotive parts manufacturer to a comprehensive mobility solutions provider. As a company committed to advancing intelligent and green transportation, OPmobility's operations span energy storage and mobility sectors, offering cutting-edge technological solutions to the global market.

During the internship, OPmobility was taking a significant step in the Chinese market. Through its joint venture PO-Rein (Shanghai) Energy Technology Co., Ltd., it signed a cooperation agreement with Hunan CRRC Zhixing Technology Co., Ltd., providing them with a 70MPa Type IV hydrogen storage system. This marked the company's first introduction of this advanced technology into China's rail transit sector and is currently the largest batch project of such systems in the country. The hydrogen storage tanks, produced and tested at the factory in Belgium, were shipped to China for integration into intelligent rail vehicles, with plans to be put into operation by the end of the year in Malaysia. This project promotes the application of hydrogen energy in the rail transit sector and stands as a landmark project under China’s "Belt and Road" Initiative.

Signing Ceremony

As a member of the R&D team, my primary responsibilities centered on the design and validation of the hydrogen storage system. I was in charge of selecting key components, defining technical specifications, and completing the overall system design and testing. Throughout this process, I collaborated closely with the European team to perform 1D simulation analyses, modeling various operating conditions of the hydrogen storage system during hydrogen charging and discharging, as well as pipeline rupture scenarios, to ensure the system's safety and filling efficiency. Additionally, I participated in the lightweight design of the framework, working together with CAD and CAE engineers to optimize the structure. During the transition from research and development to mass production, I created BOM lists for both experimental and production products and generated procurement requirements using the SAP system.

In the experimental phase, I monitored the impact vibration and EMC tests of the hydrogen storage system, organized data, and communicated test results and improvement plans with the team. This contributed significantly to project progress and effectively mitigated the risk of project delays.

Prototype Installation and Commissioning

EMC Testing

Shock and Vibration Testing

During the internship, I had the opportunity to work alongside many colleagues who were excellent engineers from different countries, which gave me a deep appreciation for the charm of a globalized work environment. The experience of collaborating with a multinational team has strengthened my ability to communicate and cooperate in multicultural settings, laying a solid foundation for future development in international teams.

In addition to work, the company organized a special team-building activity—a Taihu Lake sailing competition. From learning basic knot-tying skills to adjusting the direction of the sails, every step required close cooperation among team members. This team-building event not only enhanced our awareness of teamwork but also fostered closer relationships among colleagues, making our interactions more harmonious.

Team Outing Photo

During this internship, I received abundant support and guidance from the team, which was incredibly beneficial. My supervisor, Jeremy WAHL, the R&D Director for the Asia-Pacific region, introduced me to all the team members and provided a detailed overview of the company's structure and future direction on the first day. Throughout the internship, Jeremy frequently checked in on my progress, offering significant encouragement and support.

Alex, who works in Human Resources, acted as the "glue" that held the team together. He showed great concern for how employees felt within the team and paid special attention to whether I was adapting well to the work environment and if I encountered any issues.

I also learned a great deal from several experienced engineers: Scott, a senior product application engineer, imparted extensive knowledge about hydrogen storage systems. Kelvin helped me understand the complex parameters involved in selecting components for high-pressure hydrogen systems. Qinhe patiently answered various questions I had regarding design and experimentation. Qixuan, an engineer specializing in hydrogen storage tank design, shared insights into Type IV tank design and simulation methods, providing me with a more comprehensive understanding of structural design for hydrogen tanks. Amber, the project manager for this initiative, offered valuable experience in project management and team leadership.

The generous assistance from these mentors not only facilitated my professional growth but also provided important inspiration in terms of work attitude and thinking patterns. Their guidance has been instrumental in shaping both my technical skills and personal development during this internship.

This internship was not just a process of learning and practice but also a journey of personal growth. From technology research and development to cross-cultural collaboration, from team cooperation to innovative practices, each day was filled with the accumulation of new knowledge and experiences. Hydrogen energy technology is poised to play a significant role in future green transportation, and being part of such a promising industry is an unparalleled privilege.

This invaluable internship experience will serve as a driving force for my professional development. I am grateful to ICARE and OPmobility for providing this opportunity, and to my mentors for their support. This period of internships will be etched in my heart as one of the most important starting points in my career.”