Ono Sokki Co., Ltd. (President: Yuji Okoshi), a manufacturer and distributor of electronic measuring instruments, will begin selling an additional report, "Thermal Management," for the Chinese electric sports sedan "BYD Seal (Japanese name: SEAL)" as part of its new "Benchmarking Report Sales" business, starting February 12, 2025 (Wednesday).
Since 2023, we have been selling "benchmarking reports" that measure electric vehicles (EVs). In January 2024, we launched a report for the BYD Seal (Japanese name: SEAL) (initially with 12 items), and in 2025, we added "fuel efficiency and driving range." The "thermal management" report that we are now adding to our lineup was a report that many customers had inquired about. In the future, we plan to expand our lineup by adding new models as well as expanding the reports for previously announced models.
Key points of this presentation
- We provide measurement data utilizing our engineering technology.
- We have released a "Thermal Management" report to meet customer needs.
*In the future, we plan to expand the measurement data to include 2-4 vehicle models per year, not limited to Chinese vehicles.
Target Market
- Automobile manufacturers and other companies involved in electric vehicles
Regarding the sale of benchmarking reports
In the increasingly sophisticated and diverse field of automotive development, benchmarking is a crucial source of information. Especially in xEV development, where speed is paramount, there is a strong need to quickly acquire information and utilize it in development. Furthermore, this information need is not limited to automotive manufacturers; it is required by a wide range of companies, including motor suppliers. Our company, committed to providing reports focused on electric vehicles, leverages our unique perspective as a manufacturer of measuring instruments.
Report details (Available from Wednesday, February 12, 2025)
BYD Sea Leopard (Japanese name: SEAL) NEW
Thermal Management
This vehicle uses a heat pump to manage battery temperature and provide cabin air conditioning. The vehicle is operated under varying ambient temperature, driving conditions, and air conditioning settings, and the temperature changes in various parts and the behavior of the refrigerant control valve are measured together.
List of released reports for BYD SEAL (Japanese name: SEAL)
Output characteristics Power unit efficiency
We used a hub dynamometer to measure the output characteristics for each drive mode and the maximum output for each State of Charge (SOC). We also obtained an efficiency map of the power unit (drive shaft output / battery power).
Output limiting characteristics
We investigated the behavior of a hub dynamo when maintaining maximum output, specifically the behavior until output limitation is applied, and the behavior when the battery runs out.
Driving force characteristics, tip-out characteristics, regenerative characteristics
We used a hub dynamometer to measure the drive shaft output characteristics in response to accelerator opening for each drive mode. We measured the deceleration characteristics when tipping out, as well as the deceleration and regenerative power for each State of Charge (SOC), including a full charge. We also investigated the regenerative characteristics (regenerative power and mechanical brake behavior) when the brake pedal was operated.
Driving resistance
In accordance with GTR No.15 Amendment 6, we calculated the driving resistance from the coasting time measured on the test course. This data can be used as load data for performing mode-based energy consumption and real-world driving simulations on a test bench.
Tire rolling resistance
Based on JIS D 4234, we measured the rolling resistance and rolling resistance coefficient of the original equipment tires.
Motor and inverter vibration
To investigate the vibration of the motor and inverter during steady and transient operation in the low to high speed range, a 3-axis Accelerometer was installed, and measurements and analyses were performed.
Motor inverter sound
1/2-inch microphones were installed on each side (6 sides) of the power unit, including the motor and inverter, and measurements and analyses were performed during steady-state and transient operation in the low-speed to high-speed range.
Power unit mount vibration
To investigate the vibrations transmitted from the power unit to the vehicle body, we used a 3-axis Accelerometer to measure and analyze vibrations on both the power unit mount and the body side.
Car interior noise
1/2-inch microphones were installed in the driver's and passenger's seats inside the vehicle, and noise levels were measured and analyzed during steady and transient driving at low to high speeds.
Transmission system vibration characteristics
We measured and analyzed steering column and driver's seat vibrations while driving on a harsh road surface.
Suspension and tire vibration
To investigate vibrations transmitted from the tires while driving, we measured and analyzed vibrations from the steering knuckle and suspension towers, among other components.
alarm bell
We installed a noise meter on an ISO-certified road surface in a location compliant with the Road Transport Vehicle Act and measured the noise level when a vehicle's horn was activated.
Fuel efficiency and driving range
Based on GTR No.15 ANNEX 8, we measured the energy consumption and driving range during WLTC mode driving. In addition, we measured the energy consumption when the ventilator air conditioning temperature was changed, investigated the behavior of the refrigerant compressor, and performed loss breakdown of each element during mode driving.
