Variable-structure wearable flexible thermoelectric device substrate topological optimization method

Abstract

The invention relates to a variable-structure wearable flexible thermoelectric device substrate topological optimization method, which comprises the following steps of selecting a physical model, and constructing a finite element model according to the physical model, wherein the physical model comprises a substrate, and the two ends of the substrate are connected with a deformable strip-shaped thermoelectric material; constructing a field function, wherein the field function is used for describing material distribution of the substrate; constructing an optimization model according to the finite element model and the field function; solving the optimization model to obtain a structure topological configuration, wherein the structure topological configuration is a structure topological configuration which drives the strip-shaped thermoelectric material to deform to generate maximum out-of-plane displacement when the substrate is subjected to a load. When the optimized substrate structure is subjected to a specified load, the thermoelectric material can be driven to generate maximum out-of-plane displacement, so that the cold-hot end temperature difference of the thermoelectric device is increased, and the energy output capability of the device is improved.

Description

technical field [0001] The invention belongs to the technical field of flexible electronic devices, in particular to a method for optimizing the substrate topology of variable-structure wearable flexible thermoelectric devices. Background technique [0002] Flexible thermoelectric devices have the ability to generate electricity by relying on temperature differences, and have great application prospects in the energy supply of wearable devices and the Internet of Things. The structural topology optimization method has the characteristics of high design freedom and large design space. It is a powerful design tool to increase the temperature difference of flexible thermoelectric devices to increase energy output and ensure wearing comfort. [0003] In related technologies, traditional flexible thermoelectric devices with in-plane structures have the disadvantage of being difficult to establish a large temperature difference between the cold and hot ends, resulting in low energ...

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Problems solved by technology

[0004] In view of this, the purpose of the present invention is to overcome the deficiencies of the prior art, and provide a method for optimizing the substrate topology of the variable-structure wearable flexible thermoelectric device to solve the problem of the traditional in-plane structure flexible thermoelectric device in the prior art, which is difficult to establish cold-thermal The large temperature difference between the terminals leads to the problem of low energy output voltage capability of thermoelectric devices

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