Application of Thermoelectric Effect in DC Portable Thermoelectric Cooler And Warmer and Temperature Control Principle

1. Basic Principle of Thermoelectric Effect
Thermoelectric effect, also known as Seebeck effect or Peltier effect, refers to the phenomenon of heat transfer caused by the formation of a potential difference at both ends of thermoelectric materials at different temperatures, or when current passes through the contact surface of different materials. In the DC Portable Thermoelectric Cooler And Warmer, the device uses thermoelectric modules to form a temperature difference at both ends through the action of current to achieve heat transfer and temperature regulation.

In cooling mode, when current passes through the thermoelectric module, one side of the module absorbs heat and releases it to the other side, thereby reducing the temperature inside the box.

In heating mode, the reverse action of the current causes heat to be transferred from the external environment to the box, increasing the temperature inside the box.

2. How does the thermoelectric effect ensure uniformity of temperature control?
The DC Portable Thermoelectric Cooler And Warmer can achieve uniform and stable temperature control, which is inseparable from the air cooling mode it adopts. When the thermoelectric module is working, it does not simply rely on temperature difference to transfer heat. It also cooperates with the built-in fan system to form air flow in the box through forced convection to evenly distribute the cold air.

Forced convection technology: Through the forced air flow of the fan, the cold air is evenly distributed to every corner of the box, avoiding the temperature difference caused by heat concentration or poor cold air flow.
Temperature balance: The coordinated work of the thermoelectric module and the fan makes the circulation of cold air more efficient and the temperature inside the box balanced, especially when storing perishable food or medicines, it can effectively avoid the deterioration caused by local excessively high or low temperatures.
3. Energy efficiency and stability brought by the thermoelectric effect
Compared with the traditional compressor refrigeration method, the thermoelectric refrigeration technology has higher energy efficiency and stability. The thermoelectric module is directly driven by current, which can quickly reach the target temperature in a short time, while avoiding the high energy consumption and noise during the operation of the compressor.

Low power consumption and high efficiency: The working principle of the thermoelectric module determines that its power consumption is low, and the working state can be adjusted according to actual needs. Under the 12V power supply of the car, the DC Portable Thermoelectric Cooler And Warmer can operate efficiently without placing too much burden on the on-board battery.
Stability: The temperature control principle of the thermoelectric effect enables the device to maintain stable operation under various environmental conditions. Even in high or low temperature external environments, the temperature inside the box can still be maintained within the set range to meet the needs of storing different items.
4. Dual functions of heating and cooling
The DC Portable Thermoelectric Cooler And Warmer can not only realize the cooling function, but also switch to heating mode. This switching is based on the reverse operation of the thermoelectric effect, that is, by adjusting the direction of the current, the heat is transferred from the outside to the box. When the outside environment is cold, users can easily set it to heating mode to ensure that hot drinks, food, etc. always maintain a suitable temperature. Whether it is refrigerating beverages or heating food, the thermoelectric effect can provide a stable and efficient temperature control experience.