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A multistage thermoelectric module having a phase change energy storage layer

A technology of thermoelectric modules and phase change energy storage, which is applied in the direction of thermoelectric devices that only use the Peltier or Seebeck effect, can solve the problem of unstable temperature difference between the hot end and the cold end of the thermoelectric module, improve the overall thermoelectric conversion efficiency, and solve the problem of heat loss. The temperature difference between the end and the cold end is unstable and the effect of overcoming time inhomogeneity

Active Publication Date: 2018-12-28
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0004] In order to avoid the deficiencies of the prior art, the present invention proposes a multi-stage thermoelectric module with a phase change energy storage layer, aiming at the deficiencies of the existing thermoelectric modules, and solving the temperature difference between the hot end and the cold end of the thermoelectric module when the external heat source input is unstable unstable problem

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  • A multistage thermoelectric module having a phase change energy storage layer
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  • A multistage thermoelectric module having a phase change energy storage layer

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Embodiment Construction

[0023] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0024] figure 1 is a schematic diagram of the overall structure of the thermoelectric module, refer to figure 1 , the thermoelectric module of the present invention comprises a high-temperature layer 1, a medium-temperature layer 3, and a low-temperature layer 5. There is a primary energy storage layer 2 between the high-temperature layer and the medium-temperature layer, and a secondary energy storage layer is arranged between the medium-temperature layer and the low-temperature layer. 4. From top to bottom, there are high temperature layer 1, primary energy storage layer 2, medium temperature layer 3, secondary energy storage layer 4, and low temperature layer 5. The high-temperature layer 1, the medium-temperature layer 3, and the low-temperature layer 5 are located in the high-temperature section, the medium-temperature section, and the low-temperature secti...

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Abstract

The invention relates to a multi-stage thermoelectric module with a phase change energy storage layer, which comprises a high-temperature layer, a middle-temperature layer and a low-temperature layer.Energy storage layers made of phase change material are located between the high-temperature layer, the middle-temperature layer and a low-temperature layer. The temperature difference between the hot and cold junctions of the thermoelectric module is stabilized by the heat absorption and heat release during the phase transition of the phase change material, and the temperature of each thermoelectric material is adjusted to be in the temperature range of its optimal performance to improve the overall thermoelectric conversion efficiency of the thermoelectric module.

Description

technical field [0001] The invention belongs to the field of thermoelectric modules, and relates to a multilevel thermoelectric module with a phase change energy storage layer, in particular to a multilevel thermoelectric module with an energy storage layer composed of phase change materials. 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 their optimal performance. Using different thermoelectric materials in different t...

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Application Information

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IPC IPC(8): H01L35/32
CPCH10N10/17
Inventor 高彤朱继宏张卫红高峰范春辉穆芷兰石建雄何莹斌
Owner NORTHWESTERN POLYTECHNICAL UNIV
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