An intelligent garment with multi-spectrum management and heat regulation function and a regulation method

Abstract

This invention discloses a smart garment with multispectral management and thermal regulation functions, belonging to the field of smart wearable technology. The smart garment includes: a flexible substrate with transparency in a preset long-wavelength band; a spectral management layer integrated on the flexible substrate, configured to block light radiation in the first band (such as ultraviolet light) and allow light radiation in the second band (such as red light and near-infrared light) to pass through; and active thermal regulation components and a controller distributed on the garment. This invention utilizes the spectral management layer (such as containing down-conversion materials) to convert harmful high-energy ultraviolet radiation into beneficial red light, while simultaneously combining a flexible thermoelectric array to actively regulate local skin temperature. This smart garment solves the problems of traditional sun protection clothing's single function and poor heat dissipation, achieving a synergistic unity of light radiation protection, phototherapy care, and human thermal and humidity comfort management.

Description

Technical Field

[0001] This invention relates to the field of smart wearable technology, and more specifically, to a smart garment and adjustment method with multispectral management and thermal regulation functions. Background Technology

[0002] With the development of personal thermal management technology, functional clothing has evolved from passive warmth / insulation to active regulation. However, existing technologies have the following significant drawbacks: Limited spectral management: Traditional sun-protective clothing primarily blocks ultraviolet (UV) rays by reflecting or absorbing them, but it also blocks beneficial red and near-infrared light. Studies have shown that specific wavelengths of red light (600-900nm) can promote collagen regeneration and cell repair in the skin.

[0003] High energy consumption and large size of thermal regulation: Existing active cooling clothing mostly uses fans or liquid cooling circulation, which are bulky and noisy; while thermoelectric cooling devices based on the Peltier effect are usually rigid structures, which are difficult to fit the human skin, resulting in low heat exchange efficiency.

[0004] The contradiction between breathability and protection: In order to achieve spectral blocking and waterproofing, fabrics are usually dense, which prevents human sweat from evaporating, resulting in "heat and moisture discomfort". Summary of the Invention

[0005] The purpose of this invention is to provide a smart garment with multispectral management and thermal regulation functions to solve the above-mentioned technical problems.

[0006] A smart garment with multispectral management and thermal regulation functions includes: A flexible substrate, wherein the flexible substrate is transparent in a preset long-wavelength band; A spectral management layer, integrated into the flexible substrate, is configured to block light radiation in a first band and allow light radiation in a second band to pass through, wherein the wavelength of the first band is shorter than the wavelength of the second band. An active thermal regulation component, distributed throughout the smart garment, is configured to locally regulate the temperature of human skin. The controller is electrically connected to the active thermal regulation component and is used to control the operating status of the active thermal regulation component.

[0007] Preferably, the flexible substrate has an average transmittance of not less than 80% in the 550 nm to 1000 nm wavelength band; the first wavelength band is the ultraviolet wavelength band or the blue light wavelength band, and the second wavelength band includes the red light wavelength band and the near-infrared light wavelength band.

[0008] Preferably, the transmittance of the spectral management layer is less than 2% in the 360 ​​nm to 410 nm wavelength range, and the transmittance at at least three specific wavelengths in the 600 nm to 940 nm wavelength range is not less than 85%.

[0009] Preferably, the spectral management layer comprises a downconversion material; the downconversion material is configured to absorb light radiation in the first band and convert its energy into secondary emission light in the second band range.

[0010] Preferably, the active thermal regulation component includes a flexible thermoelectric array, which uses electrical energy to drive the generation of a temperature difference to achieve cooling or heating of human skin.

[0011] Preferably, the flexible thermoelectric array adopts a multi-layer encapsulation structure, including thermoelectric pillars and an elastomeric layer covering the outside of the thermoelectric pillars; the elastomeric layer is doped with a high thermal conductivity filler.

[0012] Preferably, the smart garment further includes an auxiliary heating layer composed of a conductive nanonetwork configured to provide heat energy through the Joule heating effect.

[0013] Preferably, the flexible substrate is a polymer film or a cellulose-based film, and the thickness of the flexible substrate is between 10 micrometers and 200 micrometers.

[0014] Preferably, the smart garment has a specific porosity structure, with a porosity of 5% to 25%, configured to allow moisture evaporation and heat dissipation.

[0015] This invention also discloses a method for skin care and thermal comfort regulation using smart clothing, comprising the following steps: The first step is to screen ambient light radiation through the spectral management layer to adjust the spectral components that irradiate the skin; The second step is to monitor environmental or physiological parameters using sensors. The third step is to control the active thermal regulation component to enter the corresponding temperature control mode based on the parameters obtained from monitoring. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram showing the overall hierarchical structure of the smart clothing provided in this embodiment of the invention; Figure 2 This is a schematic diagram illustrating the working principle of the spectral management layer in an embodiment of the present invention; Figure 3 This is a schematic diagram of the microscopic cross-sectional structure of the active thermal regulation component in an embodiment of the present invention; Figure 4 This is a logic flowchart of the skin care and thermal comfort adjustment method provided in the embodiments of the present invention; Figure 5 This is a schematic diagram of the spectral transmittance curve of an embodiment of the present invention.

[0018] 100: Smart Clothing; 10: Spectral management layer; 11: Down-conversion material; 12: Secondary emission light; 20: Flexible substrate; 21: Ventilation holes; 30: Auxiliary heating layer; 31: Conductive nanonetwork; 40: Active thermal regulation component; 41: P-type thermoelectric support; 42: N-type thermoelectric support; 43: Stretchable conductive electrode; 44: Elastomer encapsulation layer; 45: High thermal conductivity insulating filler; L1: Incident ambient light; L2: Through light. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0020] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "center," "longitudinal," "lateral," "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0024] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0025] Example 1: Overall hierarchical structure and manufacturing process of smart clothing; This embodiment provides an overall manufacturing solution for smart clothing with multispectral management and thermal regulation functions. For example... Figure 1 As shown, the smart clothing 100 provided by the present invention comprises, from the outside to the inside: a spectral management layer 10, a flexible substrate 20, an auxiliary heating layer 30, and an active thermal regulation component 40. The spectral management layer 10 contains uniformly dispersed downconversion material 11 (such as...). Figure 2 As shown, the flexible substrate 20 is used to absorb the ultraviolet component in the incident ambient light L1. Several micron-sized pores 21 are distributed on the flexible substrate 20 to ensure moisture permeability.

[0026] 1. Preparation and selection of flexible substrates; In this embodiment, nanoporous polyethylene is selected as the substrate.

[0027] Material properties: Ordinary polyethylene (PE) film is transparent to visible light but opaque to infrared light and is not breathable. The nano-PE prepared in this embodiment using a stretching process has a pore size distribution between 50 nm and 1000 nm. This pore size is comparable to the wavelength of visible light (400-700 nm), enabling strong Mie scattering, making it appear opaque and white under visible light (protecting privacy); simultaneously, this pore size is much smaller than the mid-infrared wavelength of human radiation (7-14 nm). Furthermore, the molecular bonds (CH bonds) of polyethylene are between 7 and 14. The substrate exhibits only weak narrowband absorption in the wavelength range, resulting in an infrared transmittance of over 90% for human body heat, far exceeding that of traditional cotton fabrics (approximately 1.5%).

[0028] Thickness control: The thickness of the flexible substrate is controlled at 30 mm through melt extrusion and biaxial stretching processes. .

[0029] Porosity control: In this embodiment, a micron-scale air-permeable pore array is constructed on a nano-PE substrate using needle tip discharge drilling or laser micromachining technology. Specifically, the pore size is set to 10-20 μm. The hole spacing is 100. The measured overall porosity is 15%. This structure allows for a water vapor permeability of [missing information]. This ensures that sweat can evaporate effectively.

[0030] 2. Integration of the spectral management layer; The spectral management layer is integrated onto the outer surface (the side away from the skin) of a flexible substrate via magnetron sputtering or dip coating.

[0031] Structural design: This layer adopts a metal / dielectric multilayer film structure (e.g., Alternatively, the downconversion nanocomposite coating detailed in Example 2 below.

[0032] Functionality: This layer is configured to reflect or absorb ultraviolet light with wavelengths of 200-400nm (first band) and transmit near-infrared light with wavelengths of 700-1400nm (second band).

[0033] 3. Implantation of active thermal regulation components; The active thermal conditioning components do not cover the entire garment, but are distributed in a modular array in the body's "heat-sensitive areas," specifically along the spine on the back, under the armpits, and the chest area.

[0034] The various heat regulation components are electrically connected by stretchable serpentine copper wires, which are encapsulated in a flexible TPU film layer to ensure the mechanical stability of the garment during washing and wearing.

[0035] Example 2: Deep analysis of the spectral management layer based on downconversion materials; This embodiment focuses on describing the spectral management function, particularly the specific chemical composition and optical properties of the "downconversion material".

[0036] 1. Synthesis of downconversion materials; This embodiment synthesizes a core-shell structured rare-earth-doped up / down conversion nanoparticle or an all-inorganic perovskite quantum dot.

[0037] Specific formula: Selected Perovskite quantum dots are used as light conversion agents. This can be achieved by adjusting the ratio of Cl and Br (e.g., ...). The absorption sideband was adjusted to around 410nm, and the emission peak was adjusted to 620-650nm (red light band).

[0038] Preparation method: Hot injection method was used. Under protection, cesium stearate is injected into a container containing The reaction was carried out in an octadecene solution of the ligand at a temperature of 150°C for 5 seconds, followed by rapid cooling in an ice bath.

[0039] 2. Coating of the spectral management layer The synthesized quantum dots were dispersed in a polymethyl methacrylate or polyvinylidene fluoride solution to form a quantum dot ink. This ink was then coated onto the nano-PE substrate described in Example 1 using a slot coating process, with a coating thickness of 2-5 μm. .

[0040] 3. Optical performance verification; Please see Figure 5 The prepared composite fabric was subjected to a full-spectrum scan, and the data are as follows: First band (blocking zone): In the 360nm to 410nm band, due to the strong absorption of quantum dots, the average transmittance was measured to be 0.4%, effectively preventing ultraviolet rays from damaging the skin.

[0041] Second band (through / transmission zone): At 600nm, the transmittance (including secondary emission) is 85.3%; At 750 nm, the transmittance (intrinsic transmittance of the substrate) is 87.5%; At 940 nm, the transmittance (intrinsic transmittance of the substrate) is 88.8%.

[0042] Furthermore, the calculated average transmittance is 87.2% within a wide wavelength range of 550nm to 1000nm.

[0043] Technical effect analysis: Unlike traditional sun protection clothing (which only reflects ultraviolet and visible light), the spectral management layer of this embodiment not only blocks harmful ultraviolet rays, but also converts high-energy ultraviolet photons into red light (600-650nm) that has a biological regulatory effect on the skin (such as promoting mitochondrial activity), thus realizing the "phototherapy" function.

[0044] Example 3: Microstructure and fabrication of flexible thermoelectric arrays; such as Figure 3 As shown, the active thermal regulation component 40 employs a flexible encapsulation structure. Specifically, the P-type thermoelectric support 41 and the N-type thermoelectric support 42 are connected in series via a wavy, stretchable conductive electrode 43. To prevent mechanical damage, the above structure is encapsulated within an elastomeric encapsulation layer 44. In particular, the elastomeric encapsulation layer 44 is doped with a 20% by mass fraction of high thermal conductivity insulating filler 45, thereby establishing an efficient heat dissipation channel from the thermoelectric support to the environment.

[0045] 1. Architecture of flexible thermoelectric arrays; like Figure 3 As shown, the thermoelectric array uses The structure consists of alternating P-type and N-type thermoelectric supports.

[0046] Thermoelectric materials: P-type materials selected N-type material selection To accommodate the need for flexibility, the thermoelectric support is not a bulk crystal, but rather a micropillar fabricated using powder metallurgy and spark plasma sintering (SPS), with a size of [missing information]. Electrode connection: The P-type and N-type pillars are connected in series by "S"-shaped or "U"-shaped stretchable copper electrodes. This structure can release stress through in-plane deformation during stretching, preventing electrode breakage.

[0047] 2. Elastomer encapsulation layer; To protect the brittle thermoelectric material and give the device flexibility, an elastomer is used to fill and encapsulate the thermoelectric pillars.

[0048] Matrix material: Ecoflex00-30 or PDMS (polydimethylsiloxane) are selected, which have extremely low Young's modulus (~30-50kPa) to ensure wearing comfort.

[0049] Doping with high thermal conductivity filler: In order to solve the problem of heat accumulation at the cold end of the thermoelectric module caused by the poor thermal conductivity of the elastomer (usually <0.2W / mK), this invention dops PDMS with high thermal conductivity filler.

[0050] Filler selection: Select plate-shaped boron nitride (h-BN) or alumina ( Microspheres. Compared to graphene or carbon nanotubes, BN is chosen because it has high thermal conductivity while maintaining electrical insulation, preventing short circuits between thermoelectric arms.

[0051] Doping ratio: 20% by mass.

[0052] Performance Improvement: Tests showed that the thermal conductivity of the doped elastomer layer increased from 0.18 W / mK to 1.5 W / mK. This improvement allows heat from the thermoelectric cold junction to be rapidly conducted to the outside or the heat dissipation layer, increasing the cooling efficiency (COP) by approximately 35%.

[0053] 3. Preparation of auxiliary heating layer; An auxiliary heating layer is integrated into the gap region of the thermoelectric array.

[0054] Materials: Silver nanowires (AgNWs) or carbon nanotubes (CNTs) inks are used.

[0055] Process: Conductive ink is directly printed onto the inside of a flexible substrate using screen printing or inkjet printing technology to form a cross-linked conductive nanonetwork.

[0056] Performance: The sheet resistance of this network is controlled at 5-15 Ω / sq. According to Joule's law ($Q=I^2R$), when a low-voltage DC current (3.7V lithium battery powered) is applied, the network can rapidly heat up to 40°C within 10 seconds, providing instant warmth.

[0057] Go to participate Figure 4 Example 4: Intelligent control method and logic; 1. Hardware System Controller: An ultra-low power microcontroller (such as the STM32L series or ESP32) is integrated into the rigid buttons at the hem of the garment.

[0058] Sensor group: Environmental sensors: a miniature spectral sensor (monitoring the UVI index) and an ambient temperature and humidity sensor located on the shoulder.

[0059] Physiological sensors: NTC thermistors located in the armpits and back (to monitor skin temperature) ) and capacitive humidity sensor (to monitor perspiration).

[0060] 2. Execution logic; The controller runs an algorithm based on a finite state machine, which includes the following steps: Step 1: Spectral screening and pattern prediction; The controller reads data from the spectral sensor. If the detected ultraviolet intensity (wavelength <400nm) in ambient light exceeds a threshold (e.g., ...), the controller will detect the ultraviolet light intensity. The system identifies the environment as "high-radiation outdoor environment". No action is required at this time because the passive spectral management layer (Example 2) has physically blocked ultraviolet light and transmitted infrared light, achieving basic protection without energy consumption.

[0061] Step Two: Monitoring Physiological Parameters; Real-time sampling (Sampling frequency 1Hz). Set the comfort temperature range as follows: ,For example .

[0062] Step 3: Closed-loop control of active thermal regulation; Cooling mode: When detected (e.g., 34°C) and skin moisture >60% (indicating the onset of sweating): The controller applies a positive current to the active thermal regulation component (thermoelectric array). Utilizing the Peltier effect, the side closer to the skin absorbs heat, while the side farther from the skin releases heat. A fan (if present) or passive cooling structure then removes the heat. Since the spectral management layer filters out most of the solar radiation heat (ultraviolet and some visible light heat), the thermoelectric module only needs to handle metabolic heat from the human body, significantly reducing power consumption.

[0063] Heating mode: When monitored (e.g., 28°C): Phase 1 (Rapid Warming): First, the auxiliary heating layer (AgNWs) is activated, which quickly increases the temperature of the skin due to its fast thermal response.

[0064] Phase 2 (Precise Temperature Control): Once the temperature rises to 30°C, the auxiliary heating layer is turned off, and a reverse current is applied to the thermoelectric array (or the current magnitude is adjusted). The thermoelectric module's "heat pump" mode (i.e., extracting heat from the external environment and pumping it into the skin; although the efficiency is low in extremely cold conditions, COP>1 is achieved in slightly cool environments) is used for precise temperature control.

[0065] Step 4: Energy Management; The system dynamically adjusts the PWM duty cycle based on the remaining battery power. If the battery power is below 15%, it forces the system into "power saving mode," retaining only the passive functions of the spectral management layer and disabling active thermal regulation.

[0066] Example 5: Performance Testing and Comparative Analysis; To demonstrate the technical effectiveness of this invention, the following comparative experiments were conducted.

[0067] 1. Experimental samples; Example sample: Smart clothing with a spectral management layer (quantum dot + nano-PE) and a thermoelectric array prepared using the present invention.

[0068] Comparative Example 1 (Ordinary Cotton T-shirt): Commercially available 100% cotton fabric.

[0069] Comparative Example 2 (Traditional Sun Protection Clothing): Commercially available polyester fabric with UPF50+ (with added powder).

[0070] Comparative Example 3 (Single-function cooling suit): A regular jacket with only a fan installed.

[0071] 2. Testing environment; Simulated summer outdoor environment: solar simulator (AM1.5G spectrum), irradiance 1000W / m2, ambient temperature 35°C, relative humidity 50%.

[0072] 3. Test results;

[0073] 4. Results Analysis; Spectral selectivity advantage: While Comparative Example 2 provides sun protection, it also blocks heat dissipation channels (infrared opacity) and beneficial light. The example sample, through a nano-PE substrate and quantum dot coating, achieves a triple effect of "UV protection, infrared transmission, and spectral conversion," which is unprecedented in the prior art.

[0074] Thermal and Moisture Comfort Advantages: Comparative Example 2 has poor breathability (low MVTR), which easily leads to "stuffy" conditions. The sample in this example uses a thermoelectric module encapsulated with laser-drilled nano-PE and high thermal conductivity filler, which not only ensures a physical heat dissipation channel but also provides active cooling capability, resulting in the largest temperature reduction (7.7°C lower than cotton clothing).

[0075] In summary, this invention solves the technical challenge of balancing "multi-spectral management," "efficient thermal regulation," and "wearing comfort" in existing smart clothing by integrating spectral selective conversion materials on an infrared-transparent flexible substrate and combining them with a flexible thermoelectric module encapsulated with high thermal conductivity.

[0076] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A smart garment with multispectral management and thermal regulation functions, characterized in that, include: A flexible substrate, wherein the flexible substrate is transparent in a preset long-wavelength band; A spectral management layer, integrated into the flexible substrate, is configured to block light radiation in a first band and allow light radiation in a second band to pass through, wherein the wavelength of the first band is shorter than the wavelength of the second band. An active thermal regulation component, distributed throughout the smart garment, is configured to locally regulate the temperature of human skin. The controller is electrically connected to the active thermal regulation component and is used to control the operating status of the active thermal regulation component.

2. The smart clothing according to claim 1, characterized in that: The flexible substrate has an average light transmittance of not less than 80% in the 550 nm to 1000 nm wavelength band; the first wavelength band is the ultraviolet wavelength band or the blue light wavelength band, and the second wavelength band includes the red light wavelength band and the near-infrared light wavelength band.

3. The smart clothing according to claim 1, characterized in that: The transmittance of the spectral management layer is less than 2% in the 360 ​​nm to 410 nm wavelength range, and the transmittance at at least three specific wavelengths in the 600 nm to 940 nm wavelength range is not less than 85%.

4. The smart clothing according to claim 1, characterized in that: The spectral management layer includes a downconversion material; the downconversion material is configured to absorb light radiation in the first band and convert its energy into secondary emission light in the second band range.

5. The smart clothing according to claim 1, characterized in that: The active thermal regulation component includes a flexible thermoelectric array, which uses electrical energy to drive the generation of a temperature difference to achieve cooling or heating of human skin.

6. The smart clothing according to claim 5, characterized in that: The flexible thermoelectric array employs a multi-layer encapsulation structure, including thermoelectric pillars and an elastomer layer covering the outside of the thermoelectric pillars; the elastomer layer is doped with a high thermal conductivity filler.

7. The smart clothing according to claim 1, characterized in that: The smart clothing also includes an auxiliary heating layer composed of a conductive nanonetwork configured to provide heat energy through the Joule heating effect.

8. The smart clothing according to claim 1, characterized in that: The flexible substrate is made of polymer film or cellulose-based film, and the thickness of the flexible substrate is between 10 micrometers and 200 micrometers.

9. The smart clothing according to claim 1, characterized in that: The smart garment has a specific porosity structure, with a porosity of 5% to 25%, configured to allow moisture evaporation and heat dissipation.

10. A method for adjusting skin care and thermal comfort using the smart clothing described in claim 1, characterized in that, Includes the following steps: The first step is to screen ambient light radiation through the spectral management layer to adjust the spectral components that irradiate the skin; The second step is to monitor environmental or physiological parameters using sensors. The third step is to control the active thermal regulation component to enter the corresponding temperature control mode based on the parameters obtained from monitoring.

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