Dynamic temperature control underwear system of flexible high-thermal-conductivity composite structure and control method

Abstract

The invention relates to an intelligent temperature control underwear system which comprises an underpants body, an expandable bra, a flexible heat conduction module, a refrigeration unit and an intelligent temperature control module. The flexible heat conduction module is composed of a fractal or perforated silica gel base material, a high heat conduction material layer and a moisture absorption and sweat releasing fiber layer, the silica gel base material is filled with gradient distribution heat conduction filler, a bionic fractal groove is etched in the surface of the high heat conduction layer, and the fiber layer is connected through a detachable structure. The refrigeration unit comprises a semiconductor refrigeration sheet (TEC) and a miniature fan group, the cold end of the TEC is coupled with the high heat conduction layer through an elastic heat conduction glue layer, and the fan group optimizes an airflow path based on a topological structure of a fractal groove to form a directional forced convection channel. The intelligent temperature control module dynamically adjusts the power based on the real-time temperature difference and triggers shutdown through a strain protection mechanism. The intelligent temperature control system achieves efficient thermal management, wearing comfort and intelligent safety control and is suitable for precise temperature control of sensitive areas such as the crotch and the chest of the human body.

Description

Technical Field

[0001] The present invention relates to the technical field of smart wearable devices, and particularly to a smart temperature control underwear system, which is especially suitable for dynamically regulating the temperature of sensitive areas of the human body (such as the crotch and chest), and realizes efficient thermal management through a flexible heat conduction structure, modular design and intelligent feedback mechanism. Background Art

[0002] Traditional temperature control clothing has the following technical defects: 2.1 Low heat conduction efficiency: Insufficient thermal coupling between ordinary fabrics and refrigeration units results in poor local temperature control effect; 2.2 Poor wearing comfort: Rigid heat dissipation components affect the flexibility of clothing, and long-term wearing is likely to cause skin indentation or allergies; 2.3 Insufficient safety: Lack of real-time monitoring and emergency protection mechanisms for parameters such as humidity and strain. Summary of the Invention

[0003] 3.1 System Composition and Structure 3.1.1 Flexible Heat Conduction Module a. Silicone Substrate: i. Structural Characteristics: Fractal and open-pore structure, bimodal pore size distribution (main peak 0.3 - 0.8 mm, secondary peak 1.2 - 1.5 mm); ii. Filler Distribution: The heat-conducting filler (such as aluminum nitride) shows a radial gradient distribution, with a volume fraction of 50% - 60% in the central region and 30% - 40% in the edge region.

[0004] b. High Thermal Conductivity Material Layer: i. Surface Structure: Etched bionic fractal groove network and openings, with a branch angle of 50° - 70° and a depth of 0.1 - 0.6 mm; ii. Optional Materials: - Metal foil layer (thickness 0.1 - 0.3 mm, grain size 10 - 50 nm, thermal conductivity ≥ 200 W / (m·K)); - Graphene composite film (3 - 8 layers, in-plane thermal conductivity ≥ 1000 W / (m·K)); - Silicon carbide fiber fabric (porosity 40% - 60%, fiber diameter 5 - 20 μm).

[0005] c. Fiber Layer: i. Material Characteristics: Polyester-based antibacterial fiber, monofilament diameter 0.01 - 0.03 mm, porosity 60% - 80%; ii. Connection Structure: Removably connected to the silicone substrate through snap fasteners or Velcro (removal force 2 - 8 N).

[0006] 3.1.2 Refrigeration Unit a. Thermoelectric Cooler (TEC): i. Thermal connection method: The cold end is coupled with the high - thermal - conductivity material layer through an elastic thermal - conductive adhesive layer; ii. Adhesive layer performance: The thickness and thermal conductivity satisfy a logarithmic function relationship. When the thermal conductivity ≥ 5 W / (m·K), the attenuation after 200% stretching is ≤ 15%.

[0007] b. Micro - fan group: i. Spatial layout: The ratio of the axial spacing (L) to the total thickness of the module (H) is L / H = 0.3 - 0.7; ii. Air - outlet direction: The angular deviation from the extension direction of the fractal groove is ≤ 15°.

[0008] 3.1.3 Intelligent Temperature Control Module a. Temperature closed - loop control unit: i. Data acquisition: Real - time obtain the ambient temperature (T_environment) and the set temperature (T_set), and calculate the real - time temperature difference ΔT; ii. Power regulation: Dynamically correct the refrigeration power based on the temperature difference ΔT, and the formula is P = P_reference × [1 + α× (ΔT / ΔT_max)^2].

[0009] b. Strain safety protection unit: i. Trigger condition: When the strain rate ε of the flexible layer exceeds the preset threshold (such as 5%), trigger an emergency shutdown. Specific implementation method 4.1 Example 1: Combination of fractal silica gel substrate and TEC a. Silica gel substrate: i. Pore size distribution: The main peak is 0.5 mm, and the secondary peak is 1.3 mm; ii. Surface treatment: Super - hydrophobic functional layer (contact angle ≥ 150°, attenuation ≤ 8% after 50 washes).

[0011] b. TEC connection: i. The thickness of the elastic thermal - conductive adhesive layer is 0.4 mm, and the thermal conductivity is 6 W / (m·K); ii. The measured heat flux density is 120 W / m², and the temperature difference control accuracy is ±0.5 °C.

[0012] 4.2 Example 2: Optimization of forced - convection heat dissipation a. Fan group layout: i. Axial spacing L = 8 mm, module thickness H = 15 mm (L / H = 0.53); ii. The air - outlet direction is aligned with the fractal groove, and the temperature drops by 4 - 6 °C when the wind speed is 2 m / s.

[0013] b. Verification of the performance of the adhesive layer: i. The thermal conductivity is 8 W / (m·K), and the attenuation rate after 200% stretching is 12%.

[0014] 4.3 Example 3: Verification of the dynamic temperature control algorithm a. Layout of the fan group: i. Set the temperature T_set = 35°C (target), the ambient temperature T_env = 40°C, and the real-time temperature difference ΔT = 5°C; ii. The maximum allowable temperature difference ΔT_max = 8°C, and the correction factor α = 1 - exp(-0.1×5) = 0.393; iii. The effective heat dissipation area A_effective = 100 cm^2, and the power density coefficient η = 0.08 W / cm^2.

[0015] b. Power distribution results: i. The reference power P_reference = η×A_effective = 0.08 W / cm^2×100 cm^2 = 8 W; ii. The actual power P = P_reference×[1 + α×(ΔT / ΔT_max)^2] = 8×[1 + 0.393×(5 / 8)^2] = 9.51 W; iii. Temperature control error: The steady-state temperature is 35.2°C, and the error < 1%.

[0016] 5. Beneficial effects 5.1 High-efficiency thermal management: The fractal grooves and gradient fillers increase the thermal conductivity by more than 40%; 5.2 Wear comfort: The flexible fiber layer and elastic adhesive layer adapt to the dynamic deformation of the human body, and the disassembly force design ensures the connection reliability; 5.3 Intelligent safety: The response time of the closed-loop control is < 1 second, and the strain protection mechanism effectively prevents the overheating risk; 5.4 Modular design: The detachable structure is convenient for cleaning and maintenance, and extends the service life.

Claims

1. An intelligent temperature control underwear system, comprising an underwear body (101) and an expandable bra (102), characterized in that Comprising: (a) A flexible heat conduction module (201), assembled in the temperature control area of the crotch or chest through a composite detachable fixing structure (300), and the flexible heat conduction module includes: (i) A silicone substrate, on the back of which a high heat conduction material layer (202) is compounded; (ii) A fiber layer, woven from moisture-absorbing and sweat-wicking fibers, directly contacting the human skin, and connected to the silicone substrate through a detachable fastening structure; (b) A refrigeration unit (400), forming a thermal coupling connection with the high heat conduction material layer (202), and the refrigeration unit includes at least one of the following structures: (i) An active refrigeration structure based on a thermoelectric cooler (TEC401), where the cold end of the TEC is thermally connected to the high heat conduction material layer through an elastic thermal conductive adhesive layer (403); (ii) A forced convection heat dissipation structure based on a micro fan group (402), the fan group is connected to the high heat conduction material layer through an elastic thermal conductive adhesive layer (403), and the air outlet direction is adjustable; (c) An intelligent temperature control module (500), including: (i) A temperature closed-loop control unit, configured to dynamically adjust the output power of the refrigeration unit according to the real-time data of temperature sensors and humidity sensors arranged in sensitive areas; (ii) A strain safety protection unit, configured to trigger an emergency shutdown protection when the strain rate ε of the flexible layer exceeds a preset threshold.

2. The intelligent temperature control underwear system according to claim 1, characterized in that: The surface of the high heat conduction material layer (202) is provided with a bionic fractal groove network and an opening composite structure, the branch angle of the grooves is 50° - 70°, the groove depth is 0.1 - 0.6 mm, and the heat conduction material layer includes one or more of the following material layers: (a) A metal foil layer, with a thickness of 0.1 - 0.3 mm, a thermal conductivity ≥ 200 W / (m·K), and a grain size of 10 - 50 nm; (b) A graphene composite film, with 3 - 8 layers, an in-plane thermal conductivity ≥ 1000 W / (m·K), and the layers are connected by covalent bond modification; (c) A silicon carbide fiber fabric, with a porosity of 40% - 60%, a fiber diameter of 5 - 20 μm, and the included angle between the fiber axis and the heat flow direction ≤ 30°.

3. The intelligent temperature control underwear system according to claim 1, characterized in that: The fiber layer meets the following conditions: (a) The moisture-absorbing and sweat-wicking fiber is a polyester-based antibacterial fiber, with a single filament diameter of 0.01 - 0.03 mm and a porosity of 60% - 80%; (b) The detachable fastening structure is a snap button group or Velcro, and the disassembly force is 2 - 8 N.

4. The intelligent temperature control underwear system according to claim 1, wherein: The silicone substrate is a fractal and opening composite structure, meeting the following microstructural characteristics: (a) It has a bimodal pore size distribution characteristic, where the main peak pore size is 0.3 - 0.8 mm and the secondary peak pore size is 1.2 - 1.5 mm; (b) The heat conduction filler shows a radial gradient distribution around the fractal pores, the filler volume fraction in the central area is 50 - 60 vol%, and the filler volume fraction in the edge area is 30 - 40 vol%.

5. The intelligent temperature control underwear system according to claim 1, characterized in that: The elastic thermal conductive adhesive layer (403) meets the following performance relationship: (a) The thickness δ (unit: mm) and the thermal conductivity λ (unit: W / (m·K)) conform to the functional relationship of δ = 0.2lnλ + 0.1; (b) When λ ≥ 5 W / (m·K), under a tensile deformation of ≥ 200%, the attenuation rate of the thermal conductivity does not exceed 15%.

6. The intelligent temperature control underwear system according to claim 1, characterized in that: The spatial layout of the refrigeration unit satisfies the following optimization conditions: (a) The axial spacing ratio L / H between the TEC (401) and the fan group (402) is controlled within the range of 0.3 to 0.7, where L is the element spacing and H is the total thickness of the heat dissipation module; (b) The angular deviation between the fan air outlet direction and the fractal groove extension direction does not exceed 15°.

7. The silicone substrate according to claim 4, wherein: Its inner wall surface is provided with a superhydrophobic functional layer (702), and the functional layer satisfies: (a) The static contact angle with water is ≥ 150°, and the rolling angle is ≤ 10°; (b) After 50 washes according to the GB / T 3921-2008 standard, the contact angle attenuation rate is ≤ 8%.

8. The intelligent temperature control underwear system according to claim 1, wherein: The intelligent temperature control module (500) executes a temperature control algorithm through an embedded microprocessor, including: (a) Data acquisition step: Calculate the real-time temperature difference ΔT between the ambient temperature and the set temperature; (b) Dynamic correction step: Calculate the exponential decay correction factor α = 1 - e^(-k|ΔT|) according to ΔT, where k is 0.05 to 0.2; (c) Power distribution step: Output power according to P = P0 × [1 + α × (ΔT / ΔT_max)^n], where: - P0 = 0.05 to 0.1 W / cm² × A_effective; - ΔT_max = 5 to 10 °C, n = 1 to 3.