Highly efficient thermoelectric module with multistage temperature adjustment layer

Abstract

The invention relates to a highly efficient thermoelectric module with a multistage temperature adjustment layer. The module comprises multiple temperature layers and temperature adjustment layers between the temperature layers. The temperature layers are successively arranged according to the temperature gradient. The temperature adjustment layers comprise two layers of temperature adjustment layer substrates. Dot array structures formed by metal materials are arranged between the temperature adjustment layer substrates. Temperature materials of PN pairs in function layers between upper substrate layers and lower substrate layers of the temperature layers determine the temperature of the corresponding temperature layers. According to the invention, through selection and assembly of different grades, requirements of different working environments are met; thermoelectric materials which are capable of having optimal thermoelectric performance in the corresponding temperature range are used in different temperature segments, so the whole efficiency of the thermoelectric module is improved; and by setting the temperature adjustment layers between high temperature layers and middle temperature layers, and setting temperature adjustment layers between middle temperature layers and low temperature layers, working temperature of each grade of thermoelectric materials is allowed to bein the temperature range where the optimal thermoelectric performance can be achieved and the whole efficiency of the thermoelectric module is improved.

Description

Technical field [0001] The invention belongs to the field of thermoelectric modules, and relates to a high-efficiency thermoelectric module with multi-stage temperature regulation layers. Background technique [0002] According to the thermoelectric module of the prior art, such as the thermoelectric module described in CN102308400A, the segmented thermoelectric feet use high-temperature materials on the hot side of the feet and low-temperature materials on the cold side of the feet, thereby improving the overall efficiency of the thermoelectric module. Thermoelectric materials can be divided into three categories: low temperature, medium temperature and high temperature thermoelectric materials. Different types of thermoelectric materials have different temperature ranges for their best thermoelectric performance. Using different thermoelectric materials in different temperature ranges can improve the efficiency of thermoelectric modules. In the traditional thermoelectric modu...

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Problems solved by technology

However, some traditional multi-level structures do not use different types of thermoelectric materials in different temperature ranges; although some use different types of thermoelectric materials in different temperature ranges, they do not take effective measures to ensure that each level of thermoelectric materials in the thermoelectric module The operating temperature is in the temperature range of its optimum performance

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