Thermal monitoring and management are Vital for performance and safety on power electronics.

On electric vehicles, temperature sensor is mainly used in battery management system(BMS). The battery management system can monitor the voltage, current and temperature of the battery to understand the condition of the battery detailedly and timely. At the same time, it can control charge and discharge balance,as well as charge and discharge control of a single battery unit to ensure the safe use of the battery and reduce the attenuation of the battery life.

The measurement of voltage and current is relatively simple, but the measurement of temperature is relatively complex. Different customers design and use different battery,and different batteries have different hot spots and different mechanical structures.Temperature sensor must be tight to heat object to be tested accurately.For the battery management system the temperature sensor design need to consider the speed and accurate of temperature measurement,it also need to consider the structure and installation to suit vehicles use conditions and good heat conduction of hot spots. Meanwhile it have to meet the car use environment reliability and life requirements.

Electric motor is the core component in the electric vehicle to convert electric energy into kinetic energy.The power level of hybrid and electric vehicles or buses ranges from 10kW to 200kW. By monitoring the temperature of the motor, the motor controller can adopt different control strategies to protect the entire power unit in different states.The internal structure of the motor is very compact, so miniaturization, high temperature requirements, resistance to severe electromagnetic interference and high reliability are the requirements for the motor sensor.

The electric vehicle power battery and motor protection temperature sensor designed and produced by Focusens meet the reliability requirements of AECQ200, which can meet the temperature measurement and control requirements including ultra-thin, high temperature, high reliability and high accuracy of hybrid power system.Meanwhile , Focusens provide flexible custom design service to suit various working requirements.