British R&D New Ceramic Capacitor Improves Hybrid and Electric Vehicle Energy Efficiency

Scientists at the National Physical Laboratory in the UK have created a groundbreaking lead-free, high-temperature ceramic capacitor that could greatly enhance the energy efficiency and reliability of hybrid and fully electric vehicles. As the automotive industry continues to shift toward electrification, the performance of power electronics becomes increasingly critical. These systems are essential for managing energy conversion and battery operations, which are vital for the performance of both hybrid and electric vehicles. The global market for automotive power electronics is valued at around $61 billion, and manufacturers face significant challenges in ensuring the stability of components under extreme conditions. Automotive power electronics must operate reliably in high-temperature environments, which often requires additional cooling systems. However, these cooling mechanisms add weight to the vehicle’s battery pack, reduce overall energy efficiency, and can compromise long-term system reliability. To address this issue, the British Technology and Strategy Committee funded a project called HITECA (HIgh TEmperature CApacitor), aimed at developing high-energy-density ceramic capacitors capable of operating efficiently above 200°C. This represents a major leap forward, as current capacitors used in electric vehicles typically function reliably only below 150°C. The new material not only reduces the need for complex cooling systems but also helps decrease the vehicle's overall weight. Its high permittivity allows for smaller component sizes, lower internal friction, and improved system performance. In contrast, capacitors made from other materials, such as barium titanate, can experience up to 85% power loss at operating voltages. The HITECA technology has broader applications beyond the automotive sector, including aerospace, power generation, and the oil and gas industries. “Industrial-grade electronic components must perform consistently in extreme conditions,” said Tatiana Correia, the project leader at the National Physical Laboratory. “HITECA capacitors are designed to withstand higher temperatures than conventional ones, helping electrical systems become more robust and overcoming key technical barriers in the electric vehicle industry.”

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