At present, the mainstream autonomous driving test models on the market are mostly new energy vehicles, and Lidar is one of the key technologies to achieve autonomous driving.Semiconductor refrigeration technology ensures that the key components of liDAR (laser diodes and detectors, etc.) operate within a stable operating temperature range.

Specifically, TEC module can reduce the influence of ambient temperature change on laser emission frequency and wavelength through accurate temperature control, improve the detection accuracy and reliability; It also cools photodetectors, reduces noise, enhances signal quality, and improves overall system performance and stability.

The TEC module is usually installed near the core heating component (laser diode or detector) of the laser radar by screw or clip structure, and the hot end is connected with the fin radiator or heat pipe for efficient heat dissipation. The components are connected with high thermal conductivity materials to ensure efficient heat transfer.

Because TEC module has the advantages of accurate temperature control, fast response, small size, no vibration and so on, it can stabilize the laser waveIt is irreplaceable in terms of length, optimization of detector performance and adaptation to complex environments.

In the current new energy vehicle market, people's demand for vehicle refrigerators is risingMany popular models such as Yadi Yuan PLUS and M9 have added the application of car refrigerator.

When buying a car, the comfort of the seat is usually a prerequisite.The bidirectional temperature control capability of semiconductor refrigeration technology can meet our needs for seat temperature controlWhen it is hot, it will cool down, and when it is cold, it will heat up, which fundamentally improves the driving comfort.

Its specific application principle is as follows: semiconductor refrigeration sheet and fin, fan, air duct composed of module, centrifugal or axial fan will breathe the external air into the module inside cooling/heating, through the air duct system evenly distributed to the seat cushion and backrest inside, so that people feel the seat hot and cold temperature transfer.

Semiconductor refrigeration technology has two applications in automotive battery temperature management.

The first method is direct cooling:The cold side of the semiconductor refrigeration module is directly and closely bonded to the surface of the battery cell or battery pack, and the hot side is connected to the heat dissipation fin or other heat dissipation device. When the temperature of the battery rises, the semiconductor refrigeration module absorbs and transfers the heat from the battery surface to the hot surface, and the heat is dissipated to the surrounding environment by the cooling device.

The second way is to integrate the cooling sheet into the thermal management system:For example, it is installed in the liquid cooling circuit to cool or heat the coolant; Or install it in the air cooling system and adjust the air temperature with the fan to improve the air cooling efficiency.

In summary, the semiconductor refrigeration module can not only achieve accurate heat dissipation through direct contact refrigeration, but also integrate into the liquid cooling/air cooling system to improve the overall efficiency. Both methods can improve the stability of the battery under extreme conditions.

Domain controllers are often used for tasks that require high-performance computing, such as autonomous driving.

When processing large amounts of data, the chip temperature can soar to more than 100 ° C.Traditional heat dissipation schemes are bulky and slow, and cannot meet the heat dissipation requirements of domain controllers.The semiconductor refrigeration sheet can quickly "pump" heat from the surface of the chip, and the cooling rate is more than three times faster than the traditional heat dissipation. It can effectively extend the life of the chip and reduce the stalling rate of the machine.

In addition, in view of the chip startup delay caused by low temperature in winter and performance attenuation caused by high temperature in summer, semiconductor refrigeration technology can maintain the operating temperature at the optimal temperature range of 20-50℃ by switching between hot and cold surfaces.