CN-121985721-A - Wearable flexible thermoelectric power generation device and preparation method thereof

Abstract

The application relates to a wearable flexible thermoelectric power generation device and a preparation method thereof, wherein the wearable flexible thermoelectric power generation device comprises a power generation electrode, and a first packaging layer, a thermoelectric material block and a second packaging layer which are sequentially stacked along a direction away from the power generation electrode, wherein the thermoelectric material block comprises a plurality of thermoelectric material layers which are curled and stacked from outside to inside, the thermoelectric material layer comprises a flexible substrate and a plurality of thermoelectric fibers arranged on the flexible substrate, and the thermoelectric fibers are connected in series to form an electric path. The power generation electrode is connected to both ends of a thermoelectric fiber electric path of the thermoelectric material block for outputting the electric signal in a case where the device is worn on a target object. The flexible power generation device can realize flexible wearing and power generation according to the temperature difference between the target object and the external environment by arranging the power generation electrode, the first packaging layer, the thermoelectric material block and the second packaging layer, and is suitable for biomedical scenes such as a body temperature driven health monitor.

Inventors

• LU YAO
• Huo Didi
• Cai Kefan

Assignees

• 南方科技大学

Dates

Publication Date

20260505

Application Date

20260106

Claims (10)

1. 1. A wearable flexible thermoelectric power generation device, comprising: The thermoelectric material comprises a power generation electrode, a first packaging layer, a thermoelectric material block and a second packaging layer, wherein the first packaging layer, the thermoelectric material block and the second packaging layer are sequentially stacked along the direction away from the power generation electrode, and the power generation electrode comprises: The thermoelectric material block comprises a plurality of thermoelectric material layers which are curled and stacked from outside to inside, wherein the thermoelectric material layers comprise a flexible substrate and a plurality of thermoelectric fibers arranged on the flexible substrate; The power generation electrodes are connected to two ends of a thermoelectric fiber electric path of the thermoelectric material block and are used for outputting electric signals generated by the thermoelectric fibers when the device is worn on a target object; And one end of each of the two ends of the thermoelectric fiber electric path is close to the first packaging layer, and the other end is close to the second packaging layer.
2. 2. The device of claim 1, wherein each of the thermoelectric fibers has a cold end and a hot end; In the case of the device being worn on a target object, the hot end of the thermoelectric fiber is in contact with the target object, and the cold end is remote from the target object and exposed to the environment in which the target object is located, such that the thermoelectric fiber forms a temperature differential.
3. 3. The device of claim 2, wherein the power generation electrode comprises: a first electrode for connecting one end of the thermoelectric fiber electric path; and the second electrode is used for being connected with the other end of the thermoelectric fiber electric path.
4. 4. A device according to claim 3, wherein the first and second electrodes each comprise an integrally formed conductive metal matrix.
5. 5. The device of claim 1, wherein the flexible substrate of the thermoelectric material layer comprises a polyurethane composite film.
6. 6. The device of claim 1, wherein the material of the thermoelectric fiber comprises one or more of Bi 2 Te 3 、SnSe、Ag 2 Se、Cu 2 Se, PEDOT: PSS, PANI.
7. 7. The device of claim 1, wherein the plurality of thermoelectric fibers are connected in series by a conductive paste.
8. 8. The device of any one of claims 1-7, wherein, The first packaging layer and the second packaging layer are made of flexible sterile materials, and the flexible sterile materials comprise one or more of polyurethane composite films and non-woven fabrics.
9. 9. The device of any of claims 1-7, wherein the first encapsulation layer further comprises: The fixing legs are used for self-adaptive fixing of the device and are formed by coating medical pressure-sensitive adhesive with flexible materials.
10. 10. A method of manufacturing a wearable flexible thermoelectric power generation device, comprising: providing a flexible substrate and a plurality of thermoelectric fibers; Arranging a plurality of thermoelectric fibers on a flexible substrate to form a thermoelectric material layer; Stacking a plurality of thermoelectric material layers, connecting thermoelectric fibers of adjacent thermoelectric material layers in series to form an electric path, and curling the stacked thermoelectric material layers from outside to inside to form a thermoelectric material block; generating electrodes are connected to two ends of the electric path and used for outputting electric signals; And forming a first packaging layer and a second packaging layer on two opposite sides of the thermoelectric material block, and leading out fixing legs at the first packaging layer for self-adaptive fixing of the device.

Description

Wearable flexible thermoelectric power generation device and preparation method thereof Technical Field The application relates to the technical field of thermoelectric power generation, in particular to a wearable flexible thermoelectric power generation device and a preparation method thereof. Background At present, the flexible thermoelectric power generation device still commonly has key technical bottlenecks such as low energy conversion efficiency, insufficient output power density, difficulty in considering thermoelectric performance and mechanical flexibility and the like. The traditional rigid thermoelectric module has higher conversion efficiency, but cannot be in conformal contact with human skin due to inflexibility, large volume and heavy weight, so that the application of the rigid thermoelectric module in a wearable scene is severely limited. Therefore, development of a wearable thermoelectric power generation device with good thermoelectric performance and excellent mechanical flexibility is needed, so that the wearable thermoelectric power generation device can be closely attached to human skin, efficiently collect temperature difference energy between human body and environment, realize stable and continuous electric energy output, and provide a reliable self-powered solution for low-power consumption wearable electronic equipment. Disclosure of Invention Based on this, there is a need to provide a wearable flexible thermoelectric power generation device and a method of manufacturing. A wearable flexible thermoelectric power generation device, comprising: The thermoelectric material comprises a power generation electrode, a first packaging layer, a thermoelectric material block and a second packaging layer, wherein the first packaging layer, the thermoelectric material block and the second packaging layer are sequentially stacked along the direction away from the power generation electrode, and the power generation electrode comprises: The thermoelectric material block comprises a plurality of thermoelectric material layers which are curled and stacked from outside to inside, wherein the thermoelectric material layers comprise a flexible substrate and a plurality of thermoelectric fibers arranged on the flexible substrate; The power generation electrodes are connected to two ends of a thermoelectric fiber electric path of the thermoelectric material block and are used for outputting electric signals generated by the thermoelectric fibers when the device is worn on a target object; And one end of each of the two ends of the thermoelectric fiber electric path is close to the first packaging layer, and the other end is close to the second packaging layer. In another embodiment, each of the thermoelectric fibers has a cold end and a hot end; In the case of the device being worn on a target object, the hot end of the thermoelectric fiber is in contact with the target object, and the cold end is remote from the target object and exposed to the environment in which the target object is located, such that the thermoelectric fiber forms a temperature differential. In another embodiment, the power generation electrode includes: a first electrode for connecting one end of the thermoelectric fiber electric path; and the second electrode is used for being connected with the other end of the thermoelectric fiber electric path. In another embodiment, the first electrode and the second electrode are respectively made of an integrally formed conductive metal matrix. In another embodiment, the flexible substrate of the thermoelectric material layer comprises a polyurethane composite film. In another embodiment, the material of the thermoelectric fiber comprises one or more of Bi 2Te3、SnSe、Ag2Se、Cu2 Se, PEDOT: PSS, PANI. In another embodiment, the plurality of thermoelectric fibers are connected in series by a conductive paste. In another embodiment, the first packaging layer and the second packaging layer are made of flexible sterile materials, and the flexible sterile materials comprise one or more of polyurethane composite films and non-woven fabrics. In another embodiment, the first encapsulation layer further includes: The fixing legs are used for self-adaptive fixing of the device and are formed by coating medical pressure-sensitive adhesive with flexible materials. A method of manufacturing a wearable flexible thermoelectric power generation device, comprising: providing a flexible substrate and a plurality of thermoelectric fibers; Arranging a plurality of thermoelectric fibers on a flexible substrate to form a thermoelectric material layer; Stacking a plurality of thermoelectric material layers, connecting thermoelectric fibers of adjacent thermoelectric material layers in series to form an electric path, and curling the stacked thermoelectric material layers from outside to inside to form a thermoelectric material block; generating electrodes are connected to two ends of the electric path and used