Flexible power supply watchband formed by multiple thermoelectric modules, and making method thereof

Abstract

The invention discloses a flexible power supply watchband formed by multiple thermoelectric modules, and a making method thereof. The flexible power supply watchband is formed through connecting at least one segment of a power supply watchband having a large density, formed by equidistantly arranged thermoelectric modules and arranged in the middle with power supply watchbands arranged at two sides of the middle power supply watchband(s), having the same small density and formed by equidistantly arranged thermoelectric modules; and every power supply watchband formed by the thermoelectric modules sequentially comprises a heat conduction layer, a flexible printed circuit board provided with a thermoelectric module and a plurality of heat dissipating layers from the wrist wearing surface to the outside, every thermoelectric pair in every thermoelectric module on the upper surface of the flexible printed circuit board is arranged in every rectangular through hole of a corresponding watchband main body, every thermoelectric pair is connected with the corresponding heat dissipating layers through a cold end copper conductive sheet, and the heat dissipating layers are positioned outside the corresponding watchband main body. The flexible power supply watchband improves the quantity of the thermoelectric pairs in the thermoelectric module on the premise of guaranteeing the application of the power supply watchband to the contour of the wrist, and improves the output drive capacity of the power supply watchband. The watchband main bodies are made of polydimethylsiloxane, so the flexible power supply watchband has a good flexibility, and is suitable for different arm surfaces.

Description

technical field [0001] The invention relates to a watch strap, in particular to a flexible power supply watch strap based on a multi-section thermoelectric module and a manufacturing method thereof. Background technique [0002] Wearable devices are widely used in health monitoring, sports data collection, Internet of Things communication, etc. The long-term normal operation of these devices requires a reliable, stable, and long-lasting power supply. Existing wearable power supply methods mainly include lithium batteries, solar cells, piezoelectric generators, and thermoelectric generators. Traditional lithium batteries have limited battery life, and the recycling of waste batteries is likely to pollute the environment; solar cells need light to work, and cannot be used in dark places or under clothing and other coverings; piezoelectric generators need to collect the energy of human body motion or vibration and convert it into Electric energy, but cannot collect energy when...

AI Technical Summary

Problems solved by technology

[0003] At present, wearable thermoelectric power generation structures are mostly concentrated in the wearing area, and most of them adopt rigid structures, which have problems such as low power generation density and unsuitable for changing curved surfaces.

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