Thermoelectric performance test workbench of thermoelectric generation single module

Abstract

The invention discloses a thermoelectric performance test workbench of a thermoelectric generation single module, comprising a work bench, an air pressure system, a cooling circulatory system, and anelectric heating test system. An upper work surface of the work bench and a lower work surface of the work bench are connected through at least two supporting columns. The lower work surface is provided with the electric heating test system, the cooling circulatory system, and the air pressure system in order from top to bottom. The cooling circulatory system comprises a cooling water sleeve. Twosides of the cooling water sleeve are each provided with a boss. Each boss is provided with a fixing hole. The cooling circulatory system is connected to the lower work surface through the fixing holes. The electric heating test system is clamped and fixed between the cooling circulatory system and the lower work surface. The air pressure system comprises a sliding air pressure valve and a cylinder. The center of the upper work surface is provided with a through hole. The sliding air pressure valve penetrates through the through hole and is connected to and fixed to the upper work surface. Thecylinder presses against the cooling circulatory system. The invention is advantageous in that the influence of uneven pressure on interface contact thermal resistance can be effectively prevented; the heat source power density can be raised; heat insulation between the test system and the external can be realized; the test precision of the thermoelectricity transition can be increased.

Description

technical field [0001] The invention belongs to the technical field of thermoelectric performance testing of a thermoelectric power generation module, and in particular relates to a thermoelectric performance testing workbench for a single thermoelectric power generation module. Background technique [0002] Compared with other semiconductor materials, thermoelectric materials have the characteristics of large thermoelectromotive force under a certain temperature gradient, so most of them are used to make thermoelectric power generation modules. As a new type of solid-state energy conversion device, thermoelectric power generation modules have no noise, no The characteristics of pollution, high reliability, and wide range of heat source adaptation indicate the beginning of a low-carbon energy-saving technological revolution. There are too many "waste heat" around us that can be used, including: waste steam heat, waste water heat, waste fire heat, solar heat, etc.; in today's...

AI Technical Summary

Problems solved by technology

At present, the testing technology for the thermoelectric performance of the thermoelectric power generation module is mainly to use the constant heat input power method for testing. Usually, the thickness / volume of the electric heat source that supplies heat to the thermoelectric power generation module is relatively large, and there is serious heat leakage in the input thermal power. The actual input thermal power Large deviation, severe temperature fluctuations on the hot surface of the thermoelectric power generation module, large differences, and difficulty in stability; usually, the thermoelectric power generation module is directly connected with the heat source and cold trap unit by screws, and there is a large difference in contact pressure between the contact interfaces , resulting in large fluctuations in the contact thermal resistance between the interfaces, which cannot accurately characterize the effective thermoelectric performance of the thermoelectric power generation module

[0004] Therefore, in the traditional test method, different batches of thermoelectric power generation unit modules have inconsistent cold surface temperature, hot surface temperature, inconsistent interface contact thermal resistance, and serious heat leakage of input thermal power, which affects the thermoelectric performance of the thermoelectric power generation unit module. Accurate testing and batch performance variability assessment

Images