A high-efficiency thermoelectric module with multi-level temperature-regulating layers

Abstract

The invention relates to a high-efficiency thermoelectric module with multi-level temperature-regulating layers, including multi-layer temperature layers and a temperature-regulating layer between the temperature layers, the multi-layer temperature layers are arranged in sequence according to the temperature gradient; the temperature-regulating layer includes two layers Layer substrate, the middle of the two-layer temperature-regulating layer substrate is provided with a lattice structure composed of metal materials; the temperature material of the PN pair in the functional layer between the upper substrate layer and the lower substrate layer of the temperature layer determines the temperature of the temperature layer . The invention satisfies the requirements of different working environments through the selection and assembly of different levels. Using thermoelectric materials that can achieve the best thermoelectric performance within the temperature range for different temperature segments improves the overall efficiency of the thermoelectric module. A temperature-regulating layer is set between the high-temperature layer and the medium-temperature layer, and a temperature-regulating layer is set between the medium-temperature layer and the low-temperature layer, so that the working temperature of each level of thermoelectric material is in the temperature range that can exert its best thermoelectric performance, improving the thermoelectric module. overall efficiency.

Description

technical field [0001] The invention belongs to the field of thermoelectric modules, and relates to a high-efficiency thermoelectric module with multi-level 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 legs use high-temperature materials on the hot side of the legs and low-temperature materials on the cold sides of the legs, thereby improving the overall efficiency of the thermoelectric modules. For thermoelectric materials, they 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 exerting their best thermoelectric properties. Using different thermoelectric materials in different temperature ranges can improve the efficiency of thermoelectric modules. In convention...

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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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