Liquid cooling device used for laser radar, laser radar system and vehicle

Abstract

The invention discloses a liquid cooling device used for a laser radar, a laser radar system and a vehicle. The liquid cooling device comprises a heat dissipation module, a heat absorption module anda circulating pipeline, wherein the heat absorption module can be connected with the laser radar and absorb heat from the laser radar; the heat absorption module is connected with the heat dissipationmodule through the circulating pipeline. A cooling liquid can circularly flow between the heat dissipation module and the heat absorption module through the circulating pipeline, heat is absorbed inthe heat absorption module, and heat is dissipated in the heat dissipation module. By applying the liquid cooling device to the laser radar, it is achieved that the laser radar is effectively cooled,and the work temperature of the laser radar can be further controlled. The liquid cooling heat dissipation way is large in heat capacity, slow in temperature rise, and compared with a fan cooling way,the liquid cooling heat dissipation way is quieter.

Description

technical field [0001] The invention relates to the technical field of heat dissipation, in particular to a liquid cooling device applicable to laser radar, and a laser radar system and a vehicle including the liquid cooling device. Background technique [0002] Lidar is a radar system that emits laser beams to detect characteristic quantities such as the position and speed of targets. Lidar consists of a transmitting system (mainly including lasers), a receiving system (mainly including photodiodes), and information processing. The service life and performance of lidar are related to the temperature in its working state. Cooling lidar is a common requirement. The heat dissipation system of lidar is very important to improve the output power of lidar. [0003] Modern society has higher and higher requirements for lidar. The stronger the performance of lidar, the greater the power consumption, and people hope that the smaller the size, the better, which leads to more intensi...

AI Technical Summary

Problems solved by technology

On the one hand, the heat transfer coefficient of air cooling is small and the temperature control capability is limited. For laser radars with high integration and long-distance measurement capabilities, if natural convection heat dissipation is adopted, the temperature rise of the laser radar is usually greater than 35°C. Even with forced convection, the temperature rise of the lidar is still greater than 20°C

On the other hand, air cooling relies on the fin structure, and the strengthening method of air cooling is basically to add fins, which is very simple. The fin structure is generally arranged on the sides of the lidar, which will cause the shape of the lidar to change, and increase The heat dissipation area will increase the size of the lidar device and affect the freedom of industrial design

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