旭化成研发新传感器，让EV马达控制器缩小10%

Core Viewpoint - The new sensor developed by Asahi Kasei utilizes indium arsenide, which is more sensitive to magnetism than traditional silicon, enabling high-precision magnetic detection without the need for metal components [2][5]. Group 1: Product Development - The new sensor is expected to begin production in the second half of 2026, with actual deployment in electric vehicles anticipated after 2027 [4]. - This sensor will be integrated into the "traction inverter" used for motor control, playing a crucial role in current detection [4]. Group 2: Technical Advantages - The new sensor allows for a 10% reduction in the size of the inverter by eliminating the need for a metal component known as a "magnetic core," which was previously used to enhance the magnetic field [5]. - The increased sensitivity to magnetism enables the detection of subtle changes in current, resulting in faster response times and improved control precision of the inverter [5]. - Enhanced motor driving efficiency leads to reduced unnecessary power consumption, contributing to overall energy savings [5].