Ono Sokki Adds "Thermal Management" Report to Benchmarking Report Sales Lineup

Ono Sokki Co., Ltd. (President: Yuji Okoshi), a manufacturer and seller of electronic measuring instruments, will begin selling a new "Thermal Management" report for the Chinese electric sports sedan "Xiaomi SU7 Max" on Wednesday, May 20, 2026, as part of its new "Benchmarking Report Sales" business. Xiaomi SU7 Max View Details Our company started selling "Benchmarking Reports" for electric vehicles in 2023. The "Thermal Management" report, which is now added to our lineup, was highly requested by customers. This report analyzes how heat is controlled. Ono Sokki plans to continue expanding its report lineup for existing benchmarking vehicle models and progressively add new vehicle models. Key Points of This Announcement: ● Launch of "Thermal Management" report to meet customer needs ● Delving into the innovation of "SU7 Max" equipped with 871V high-voltage architecture and dual heat pumps ● Providing measurement data utilizing our engineering technology Target Market: ● Automotive manufacturers and various companies involved in electric vehicles About Benchmarking Report Sales: https://www.onosokki.co.jp/HP-WK/products/consulting/benchmark-report-sales.htm Benchmarking is a crucial source of information in increasingly sophisticated and diverse automotive development. Especially in xEV development, where speed is required, there is a need to quickly acquire information and utilize it for development. Furthermore, this information need is not limited to automotive manufacturers but is also required by a wide range of companies, such as motor suppliers. Our company is committed to providing reports centered on electric vehicles, from the unique perspective of a measuring instrument manufacturer. View Details Report Details: *Available from Wednesday, May 20, 2026 ● Xiaomi SU7 Max [NEW] This vehicle is a BEV super sports sedan that uses refrigerant for cabin air conditioning and coolant for temperature management of high-voltage batteries, inverters, and motors, with a system that partially exchanges heat with each other. This report analyzes the power efficiency due to high voltage, the control of dual heat pumps, and the switching of flow paths by the coolant control unit (8-way valve, 3-way valve) using an environmental chassis dynamometer and a soak room. Furthermore, it deciphers the behavior of the motor cooling system and battery temperature management, approaching the full scope of the advanced electrification technology realized by the SU7 Max. ■ Thermal Management We analyzed the behavior of each component and the amount of heat exchange by changing the ambient temperature (-30℃ to 40℃ with solar radiation), driving patterns, and air conditioner settings. Approximately 350 points were measured, including the inlet/outlet temperatures of each component, refrigerant pipe surface temperatures, and high-voltage battery cell terminal temperatures. We also calculated the power consumption and cruising range during WLTC mode driving and performed loss decomposition for each element. Transition of Mollier diagram during WLTC mode Coolant heat exchange rate graph for each unit Loss decomposition graph during WLTC mode ● Xiaomi SU7 Max Released Reports ■ Vehicle NVH/Road Noise Transfer Path Analysis (TPA) NVH measurements (cabin noise, power unit noise and vibration, suspension vibration, etc.) and analysis were performed during actual driving. For road noise, the contribution, input, and body acoustic sensitivity of each body input part were calculated by Transfer Path Analysis (TPA). ■ Running Resistance Running resistance was calculated from the coast-down time measured on a test course in accordance with GTR No. 15 Amendment 6. This data can be used as load data for simulating mode power consumption and actual driving on a test bench. ■ Tire Rolling Resistance Rolling resistance and rolling resistance coefficient of genuine tires were measured based on JIS D 4234. View Details About Ono Sokki: Founded in 1954. Engaged in the manufacturing and sales of electronic measuring instruments and various engineering service businesses. In the same year of its founding, it developed Japan's first tachometer for digitally measuring jet engine rotation speed. In the automotive industry, it provides measurement technology from R&D support to manufacturing processes in a wide range of fields, including two-wheeled and four-wheeled vehicles, automotive parts, construction machinery, food, and medical testing. It technically supported Honda's victories in its second period (1983-1992) F1 racing activities by custom-producing an operating system for V6 turbo engine bench tests. In recent years, it has also entered new business areas to realize a carbon-neutral society, such as supporting the development of electric vehicles (EVs).