Stretchable flexible thermoelectric device and manufacturing method thereof

Abstract

The invention discloses a stretchable flexible thermoelectric device and a manufacturing method thereof. A hot-end or cold-end stretchable electrode array of the stretchable flexible thermoelectric device comprises a plurality of hot-end or cold-end stretchable electrodes arranged in an array. Each hot-end or cold-end stretchable electrode is a flexible copper-clad plate of a sheet-shaped structure. Each hot-end or cold-end stretchable electrode is divided into three parts, the two ends are of structures with the same shape as the bottom surface of the hot end or the cold end of a P-type thermoelectric block or a N-type thermoelectric block, and the middle is of a staggered gap structure. According to the stretchable flexible thermoelectric device and the manufacturing method thereof, the alternate kerf structures are designed and manufactured on the hot-end electrode array and the cold-end electrode array of the flexible thermoelectric device, so that the thermoelectric device has good stretchability; and meanwhile, according to the manufacturing method of the stretchable flexible thermoelectric device, large-area integrated manufacturing and positioning welding of the electrode array are innovatively achieved, the manufacturing cost of the stretchable flexible thermoelectric device is reduced, and the processing efficiency of the flexible thermoelectric device is improved.

Description

technical field [0001] The invention belongs to the technical field of thermoelectric conversion, and relates to a stretchable flexible thermoelectric device and a manufacturing method thereof. Background technique [0002] Thermoelectric devices based on the Seebeck effect can collect heat energy from the human body surface and convert it into electrical energy, providing continuous energy supply for wearable electronic devices. It has the advantages of environmental protection, no noise, no moving parts, etc., and has broad application prospects. Since the human body surface is a curved heat source, the use of flexible thermoelectric devices can reduce the damage to thermoelectric devices caused by external shock and vibration, and improve wearing comfort. In the prior art, the flexible thermoelectric device can have good bending properties through the improvement of the structural design or the manufacturing method. [0003] However, due to the ductility of human skin an...

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Problems solved by technology

[0007] In order to achieve the above purpose, the present invention provides a stretchable flexible thermoelectric device and a manufacturing method thereof. By designing and fabricating alternate slit structures on the hot end and cold end electrode arrays of the flexible thermoelectric device, the electrode array can be stretched without tensile stress. It has good compactness in the case, and the alternating slit structure deforms when it is subjected to tensile stress, so that the thermoelectric device has good stretchability; at the same time, the fabrication method of the stretchable flexible thermoelectric device innovatively realizes the large size of the electrode array. The area integrated manufacturing and positioning welding reduces the manufacturing cost of stretchable flexible thermoelectric devices, improves the processing efficiency of flexible thermoelectric devices, and solves the problem of large area existing in the production process of stretchable flexible thermoelectric devices in the prior art. Manufacturing and arraying are difficult, errors are easily introduced in the positioning process of each device, and the connection efficiency of each device is low, and the defective rate is high.

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