What are the applications of thermal sensitive materials in electronic products? Can you give an exa

Thermal sensitive materials are widely used in electronic products, because they can change their properties through temperature changes, and are used to achieve temperature measurement, temperature control, overheating protection and other functions. Here are some specific application examples:

1. Temperature measurement

Thermal sensitive material is one of the commonly used temperature sensor components, which is widely used in the temperature measurement system of electronic products. For example:

Thermometers: Thermometers in medical electronic devices often use thermistors as temperature sensing elements to measure the temperature of the human body and convert it into electrical signals for processing and display.

Household appliances: In household appliances, such as air conditioners, water heaters, rice cookers, etc., thermistors are used to monitor and control the temperature inside the equipment to ensure that the equipment operates within the appropriate temperature range and improve the safety and service life of the equipment.

Two, temperature control

Thermal sensitive materials play an important role in the temperature control system of electronic products. By sensing the temperature change and adjusting the control signal, the thermal sensitive material can achieve precise control of the equipment temperature. For example:

Printers: In printers, thermistors are used to control the temperature of the print head. Since the temperature of the print head affects the print quality, the thermistor can sense the temperature of the print head and control the power of the heating element, thus keeping the temperature of the print head in a constant range to ensure that the print is clear and not fuzzy.

Electronic temperature controller: In electronic temperature controller, thermistor as a temperature sensing element, when the temperature changes, its resistance value will change. By measuring the resistance value of the thermistor, the controller can determine the current temperature and adjust the operation of the cooling or heating equipment to achieve accurate temperature control.

3. Overheat protection

Thermal sensitive materials are also widely used in overheating protection systems for electronic products. When the internal temperature of the device is too high, the thermal sensitive material will trigger the protection mechanism to cut off the power or reduce the power of the device to prevent the device from being damaged due to overheating. For example:

Motor protection: In motors, thermistors can be used to detect the temperature of the motor. When the motor overheats, the resistance value of the thermistor changes, triggering the protection circuit to cut off the power supply and prevent the motor from being damaged.

Battery protection: In the battery pack of devices such as smartphones and tablets, thermistors are used to monitor battery temperature. When the battery temperature is too high, the thermistor triggers the protection mechanism to stop charging or reduce the charging rate, preventing the battery from overheating and causing safety problems.

4. Other applications

In addition to the above applications, thermal sensitive materials have a variety of other applications in electronic products. For example:

LED lighting systems: In LED lighting systems, thermistors are used to monitor the joint temperature of LED devices. By adjusting the current flowing through the LED to maintain the best operating temperature, improve the luminous efficiency and life of the LED.

Storage devices: In computer storage devices such as hard disk drives (HDDS), thermistors are used to monitor the temperature of the magnetic head. When the temperature is too high, a cooling mechanism is triggered to protect the magnetic head from damage.

Application case summary

Printer temperature control: The thermistor keeps the print head temperature constant to ensure print quality.

Air conditioning temperature regulation: The thermistor senses the temperature change of the refrigerant, controls the operation of the compressor, and maintains a constant indoor temperature.

Battery overheat protection: In devices such as smartphones, thermistors monitor battery temperature to prevent overcharging or overheating from causing safety issues.

Motor protection: Detect motor temperature to prevent overheating damage.

These application examples fully demonstrate the diversity and importance of thermal sensitive materials in electronic products. With the continuous development of science and technology, the application field of thermal sensitive materials will continue to expand and deepen.