Self-powered thermal insulation fabric and self-powered heating textile

Abstract

The utility model provides a kind of self-powered heat-insulating fabric and self-powered heating textile, self-powered heat-insulating fabric includes three-dimensional spacing fabric, and the heat-insulating layer filled in hollow structure. Three-dimensional fabric includes first layer fabric, second layer fabric and third layer fabric arranged alternately, and a plurality of spacing layers are arranged between first layer fabric and second layer fabric. A plurality of collision spaces are formed between first layer fabric, second layer fabric and spacing layer, and the heat-insulating layer is filled in each collision space. First layer fabric, second layer fabric and spacing layer use dielectric yarn. Third layer fabric uses conductive yarn. The three-dimensional fabric of the utility model has good warmth retention and electromechanical conversion capability. The self-powered heating textile of the utility model includes self-powered heat-insulating fabric and heating fabric, and can realize self-powered heating of heating fabric.

Description

Technical Field

[0001] This utility model relates to the field of textile technology, and in particular to a self-powered heat insulation fabric and a self-powered heating textile. Background Technology

[0002] With the continuous advancement of technology, people's demands for clothing are no longer limited to traditional functions such as warmth and aesthetics; they increasingly seek a perfect combination of multifunctionality and comfort. Triboelectric nanogenerators (TENGs), as an emerging energy harvesting technology, can cleverly convert the mechanical energy generated during human movement into electrical energy, providing power for miniature smart wearable devices. For example, integrating them into clothing can effectively collect the mechanical energy generated during daily activities, such as arm swings and leg flexion and extension, continuously and stably converting it into electrical energy to power portable electronic devices. This greatly expands the multifunctionality of clothing and meets modern consumers' pursuit of a smart lifestyle.

[0003] However, how to better integrate triboelectric nanogenerator technology with existing mature textile forming processes remains a key challenge.

[0004] Three-dimensional spacer fabrics are three-dimensional structures composed of several spacer yarns connecting two surface fabric layers. These spacer yarns support the upper and lower fabric layers longitudinally, thus creating a certain thickness. Currently, to better improve the thermal insulation performance of three-dimensional spacer fabrics in the apparel textile field, a composite method combining spacer fabrics and thermal insulation materials is often used. One method involves filling the spacer layers with fillers of low thermal conductivity. This method not only effectively blocks heat transfer but also improves the mechanical properties of the spacer fabric. Currently, commonly used thermal insulation filling materials are down and cotton. Down's fluffy fiber structure effectively prevents heat loss, and its excellent breathability and moisture absorption make it comfortable to wear, making it a common filling material for winter clothing. However, its thermal insulation performance is greatly affected by humidity; in humid environments, its warmth retention decreases, and it is prone to bacterial and mold growth. Cotton, as a natural thermal insulation material, has good heat retention and softness, making it a common material for thermal underwear and winter coats. However, its warmth retention mainly depends on the air layer between the fibers; when cotton becomes damp or compressed, its warmth retention is significantly reduced.

[0005] In view of this, the inventor of this case conducted in-depth research, which led to the creation of this case. Utility Model Content

[0006] The purpose of this invention is to provide a self-powered heat insulation fabric and a self-powered heating textile.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows: A self-powered thermal insulation fabric includes a three-dimensional spacer fabric with a hollow structure and a thermal insulation layer filled within the hollow structure. The three-dimensional spacer fabric comprises a first layer, a second layer, and a third layer, with the first and second layers alternating. A plurality of spacer layers are provided between the first and second layers, vertically interwoven to form a three-dimensional spatial structure. A plurality of collision spaces are correspondingly formed between the first layer, the second layer, and the spacer layers, and the thermal insulation layer is correspondingly filled in each of the collision spaces. Within the collision space, the portion excluding the heat insulation layer is an air layer; the warp and weft yarns of the first layer fabric are dielectric yarns, and the warp and weft yarns of the second layer fabric are dielectric yarns; the spacer yarns of the spacer layer are dielectric yarns, and the first layer fabric, the second layer fabric, and the spacer yarns constitute a dielectric fabric; the warp and weft yarns of the third layer fabric are conductive yarns, and the conductive yarns have a metal plating layer, making the third layer fabric a conductive fabric and forming an electrode layer; the three-dimensional spacer fabric is a self-powered fabric that converts mechanical energy into electrical energy based on the collision and cooperation between the heat insulation layer and the dielectric and conductive fabrics.

[0008] Furthermore, the dielectric yarn is polytetrafluoroethylene yarn, nylon yarn, cotton yarn, or wool yarn.

[0009] Furthermore, the insulation layer is a polyurethane foam layer, a polyethylene foam layer, or a polyvinyl chloride foam layer.

[0010] Furthermore, the conductive yarn is a metal-plated fiber, copper fiber, or silver fiber.

[0011] Furthermore, the heat insulation layer is an ETPU foam layer, the dielectric fabric is a PTFE fabric, and the conductive fabric is a silver-plated nylon fabric.

[0012] Furthermore, the warp yarns of the second layer of fabric pass through the third layer of fabric and are bound and interwoven together with the third layer of fabric; one end of the spacer yarn is interwoven with the first layer of fabric, and the other end of the spacer yarn is interwoven with the second layer of fabric.

[0013] Furthermore, the insulation layer is an ETPU foam particle layer, comprising a plurality of ETPU foam particles in contact with each other.

[0014] Furthermore, the volume of the heat insulation layer occupies 40% to 60% of the collision space.

[0015] A self-powered heating textile includes a heating fabric and a self-powered heat-insulating fabric, wherein the self-powered heat-insulating fabric is electrically connected to the heating fabric via an electrical connection and a control system.

[0016] Furthermore, the electrical connection and control system includes a capacitor, the self-powered thermal insulation fabric is electrically connected to the capacitor, and the capacitor is electrically connected to the heating fabric.

[0017] After adopting the above technical solution, the self-powered thermal insulation fabric of this utility model has the following beneficial effects: The self-powered thermal insulation fabric of this utility model has the following beneficial effects: (1) Compared with the traditional planar single-layer fabric, the three-dimensional spacer fabric has good thermal insulation performance. Its special three-dimensional combination can store a large amount of still air in the spacer layer. Still air is the medium with the lowest thermal conductivity in nature, which improves the thermal insulation and warmth retention of textiles. (2) The three-dimensional spacer fabric has both good warmth retention and electromechanical conversion capability, which meets people's current demand for multifunctional textiles.

[0018] When self-powered: Step S1: The heat insulation layer is in close contact with the dielectric fabric under the action of external force. Since the heat insulation layer and the dielectric fabric have different abilities to gain and lose electrons, the surface of the heat insulation layer is positively charged and the surface of the dielectric fabric is negatively charged. At this time, the heat insulation fabric is in electrostatic equilibrium and there is no potential difference. Step S2: When the external force is removed, the heat insulation layer and the dielectric fabric begin to separate. Due to the electrostatic induction effect, the conductive fabric surface in contact with the dielectric fabric is induced to generate positive charge, and a potential difference is generated between the electrode layer and the grounding terminal. The potential difference drives electrons to flow continuously from the electrode layer to the ground and generates a current in the opposite direction to the electron movement. Step S3. When the heat insulation layer separates from the dielectric fabric and generates an equal amount of charge with opposite polarity to that on the surface of the conductive fabric, a new charge balance is formed inside the heat insulation fabric.

[0019] Further, in step S4, when an external force is applied again to bring the insulation layer close to the dielectric fabric, electrons flow in the opposite direction and generate current in order to balance the potential difference, until the insulation layer and the dielectric fabric are in complete contact, the positive charge in the conductive fabric is completely neutralized, and the insulation fabric as a whole returns to the electrostatic equilibrium state.

[0020] This invention combines three-dimensional spacer fabric (three-dimensional structure) with triboelectric nanogenerator technology, giving it good structural integrity and dimensional stability. Furthermore, the fibers can achieve a progressive contact response from point to line to surface, providing more sufficient contact-separation space, which is beneficial for improving triboelectric output performance and sensitivity to pressure sensing.

[0021] The integration of triboelectric nanogenerator technology with three-dimensional thermal insulation fabrics can not only solve the problem of reduced heat retention performance of current thermal insulation materials after they become damp, but also provide an effective strategy for the development of flexible smart textiles. While maintaining the flexibility, breathability, lightweight and thermal insulation performance of traditional textile materials, it also has electromechanical conversion capabilities.

[0022] This invention relates to a self-powered heating textile, which enables the thermal insulation fabric to convert mechanical energy into electrical energy and use it to power the heating fabric. Attached Figure Description

[0023] Figure 1 This is a warp cross-sectional view of the three-dimensional spacer fabric of this utility model; Figure 2 This is a schematic diagram of the structure of the three-dimensional spacer fabric of this utility model; Figure 3 This is a schematic diagram illustrating the working principle of the self-powered thermal insulation fabric of this utility model. Figure 4 The equivalent circuit diagram is shown for the self-powered thermal insulation fabric of this utility model when it is used for charging.

[0024] In the picture: Three-dimensional spacer fabric 01; heat insulation particles 02; first layer fabric 03; second layer fabric 04; third layer fabric 05; spacer layer 06; collision space 07. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. Example 1 This utility model relates to a self-powered heat-insulating fabric, such as... Figure 1 and Figure 2As shown, the thermal insulation fabric includes a three-dimensional spacer fabric 01 with a hollow structure, and a thermal insulation layer filled within the hollow structure. In this embodiment, the thermal insulation layer is specifically thermal insulation particles 02. The three-dimensional spacer fabric 01 includes a first layer fabric 03, a second layer fabric 04, and a third layer fabric 05. The first layer fabric 03 and the second layer fabric 04 are arranged alternately, and a plurality of spacer layers 06 are provided between the first layer fabric 03 and the second layer fabric 04. The spacer layers 06 are vertically interwoven with the first layer fabric 03 and the second layer fabric 04, together forming a three-dimensional spatial structure. The first layer fabric 03, the second layer fabric 04, and the spacer layers 05 form a three-dimensional spatial structure. Collision spaces 07 are formed between 6, and heat insulation particles 02 are filled in each collision space 07. The part of the collision space excluding the heat insulation layer is air (i.e., air layer). The warp and weft yarns of the first layer fabric 03 are dielectric yarns, and the warp and weft yarns of the second layer fabric 04 are dielectric yarns. The spacer yarns of the spacer layer 06 are dielectric yarns. The first layer fabric 03, the second layer fabric 04 and the spacer yarns 05 constitute a dielectric fabric to form a dielectric layer. The warp and weft yarns of the third layer fabric 05 are conductive yarns to form an electrode layer. The conductive yarns have a metal plating layer, and the third layer fabric 05 is a conductive fabric.

[0026] refer to Figure 1 As shown, the first layer of fabric 03 is formed by the interlacing of warp yarns 1 and 2 with weft yarns; the second layer of fabric 04 is formed by the interlacing of warp yarns 3 and 4 with weft yarns; the third layer of fabric 05 is formed by the interlacing of warp yarns 5 and 6 with weft yarns. Warp yarn 3 runs through the third layer of fabric 05, thus binding and interlacing the second layer of fabric 04 and the third layer of fabric 05 together; warp yarns 7 and 8 are spacer yarns, located in the longitudinal direction to provide support, and run through the first layer of fabric 03 and the second layer of fabric 04, that is, one end of the spacer yarn is interlaced with the first layer of fabric 03, and the other end of the spacer yarn is interlaced with the second layer of fabric 04, thus connecting the fabrics into a whole and forming a three-dimensional spatial structure.

[0027] In this invention, the dielectric yarn is made of conventional dielectric materials such as polytetrafluoroethylene (PTFE), nylon, cotton, or wool.

[0028] The heat insulation particles 02 are conventional heat insulation materials such as polyurethane foam particles (ETPU), polyethylene foam particles, or polyvinyl chloride foam particles. Taking polyurethane foam particles as an example, the heat insulation layer is an ETPU foam particle layer, which includes a number of ETPU foam particles that collide and rub against each other.

[0029] The volume of the heat insulation layer occupies 40% to 60% of the collision space.

[0030] The conductive yarn is made of conventional metal-plated fibers, copper fibers, or silver fibers.

[0031] This invention uses commercially available yarn to weave three-dimensional spaced fabrics, avoiding the disadvantages of methods such as coating with polymer materials or chemical vapor deposition, which are complex, time-consuming, have poor air and moisture permeability, and low biocompatibility.

[0032] In this embodiment, the heat insulation particles are ETPU foam particles, the dielectric fabric is PTFE fabric, and the conductive fabric is silver-plated nylon fabric.

[0033] The self-powered method includes the following steps: Step S1 ( Figure 3 (Step a) In the initial state, the ETPU foam particles distributed in the hollow space of the three-dimensional spacer fabric are in close contact with the PTFE fabric under the action of external force. Since the two materials have different abilities to gain and lose electrons, the ETPU surface is positively charged and the PTFE surface is negatively charged. At this time, the whole is in electrostatic equilibrium and there is no potential difference. Step S2 ( Figure 3 (Step b) When the external force is removed, ETPU and PTFE begin to separate. Due to the electrostatic induction effect, the surface of the silver-plated nylon fabric in contact with PTFE is induced to generate a positive charge, which generates a potential difference between the electrode layer and the grounding terminal. The potential difference drives electrons to flow continuously from the electrode layer to the ground and generates a current in the opposite direction to the electron movement. Step S3 ( Figure 3 (Step c) When ETPU and PTFE separate to the surface of the silver-plated nylon fabric, generating an equal amount of charge with opposite polarity to that on the PTFE surface, a new charge balance is formed inside the fabric. Furthermore, Step S4 ( Figure 3 In step d), when an external force is applied again to bring ETPU and PTFE close together, the electrostatic balance is broken again. In order to balance the potential difference, electrons flow back from the ground to the silver-plated nylon and generate current until the two materials are in complete contact. The positive charge in the silver-plated nylon is completely neutralized and the fabric returns to the electrostatic balance state. This utility model is a self-powered thermal insulation fabric with the following beneficial effects: (1) The three-dimensional spacer fabric has good thermal insulation performance compared with the traditional planar single-layer fabric. Its special three-dimensional combination can store a large amount of still air in the spacer layer. Still air is the medium with the lowest thermal conductivity in nature, which improves the thermal insulation and warmth retention of textiles.

[0034] (2) The combination of three-dimensional spacer fabric and heat insulation particles makes the three-dimensional spacer fabric filled with heat insulation particles less prone to collapse due to moisture, thus solving the problem that the fluffiness of down and cotton decreases when they are damp or compressed, resulting in reduced warmth retention.

[0035] (3) This three-dimensional spacer fabric has good warmth retention, biocompatibility and electromechanical conversion capability, which meets people's current demand for multifunctional textiles.

[0036] Example 2 This utility model discloses a self-powered heating textile, comprising a heating fabric and a self-powered heat insulation fabric as described in Example 1, wherein the self-powered heat insulation fabric is electrically connected to the heating fabric via an electrical connection and a control system.

[0037] Furthermore, the electrical connection and control system includes a capacitor, the self-powered thermal insulation fabric is electrically connected to the capacitor, and the capacitor is electrically connected to the heating fabric.

[0038] Specifically, A textile that can achieve self-powered heating, such as Figure 4 As shown, the device includes a self-powered thermal insulation fabric (as in Example 1), a rectifier bridge, a capacitor, and a heating fabric. The power supply terminals of the self-powered thermal insulation fabric are electrically connected to the first and second terminals of the rectifier bridge. The third terminal of the rectifier bridge is split into two paths via switch S1: one path is electrically connected to one end of the capacitor, and the other path is connected to the power supply terminal of the heating fabric. The fourth terminal of the rectifier bridge is split into two paths: one path is electrically connected to the second terminal of the capacitor, and the other path is electrically connected to the other power supply terminal of the heating fabric via switch S2. Specifically, the self-powered thermal insulation fabric and the heating fabric are connected by a wire. Switches S1 and S2 are both normally open switches. In this embodiment, a conventional rectifier bridge is used. The self-powered thermal insulation fabric serves as the AC power source, the rectifier bridge as an AC-DC converter, and the capacitor as an energy storage device.

[0039] Furthermore, the textile also includes a voltmeter, the two ends of which are electrically connected to the two ends of a capacitor, i.e., the voltmeter is connected in parallel across the capacitor.

[0040] The heating fabric can be the heating lining of clothing.

[0041] When in use, when switch S1 is turned on and switch S2 is turned off, the AC power generated by the self-powered heat insulation fabric is rectified and output to charge the capacitor, and a voltmeter is connected in parallel across the capacitor to monitor the voltage change; when switch S2 is turned on and switch S1 is turned off, the capacitor releases the stored electrical energy and supplies it to the heating fabric, thus realizing the utilization of electrical energy that allows the heat insulation fabric to convert mechanical energy into electrical energy and supply power to the heating fabric.

[0042] The above embodiments and accompanying drawings are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A self-powered thermal insulation fabric, characterized in that: The thermal insulation fabric includes a three-dimensional spacer fabric with a hollow structure, and a thermal insulation layer filled within the hollow structure. The three-dimensional spacer fabric includes a first layer, a second layer, and a third layer, with the first and second layers alternating. A plurality of spacer layers are provided between the first and second layers, and these spacer layers are vertically interwoven with the first and second layers to form a three-dimensional spatial structure. A plurality of collision spaces are correspondingly formed between the first layer, the second layer, and the spacer layers, and the thermal insulation layer is correspondingly filled within each of these collision spaces. The portion of the collision space excluding the heat insulation layer is an air layer; the warp and weft yarns of the first layer fabric are dielectric yarns, and the warp and weft yarns of the second layer fabric are dielectric yarns; the spacer yarns of the spacer layer are dielectric yarns, and the first layer fabric, the second layer fabric, and the spacer yarns constitute a dielectric fabric; the warp and weft yarns of the third layer fabric are conductive yarns, and the conductive yarns have a metal plating layer, and the third layer fabric is a conductive fabric, forming an electrode layer; the three-dimensional spacer fabric is a self-powered fabric that converts mechanical energy into electrical energy based on the collision and cooperation between the heat insulation layer and the dielectric and conductive fabrics.

2. The self-powered thermal insulation fabric as described in claim 1, characterized in that: The dielectric yarn is polytetrafluoroethylene yarn, nylon yarn, cotton yarn, or wool yarn.

3. The self-powered thermal insulation fabric as described in claim 1, characterized in that: The insulation layer is a polyurethane foam layer, a polyethylene foam layer, or a polyvinyl chloride foam layer.

4. The self-powered thermal insulation fabric as described in claim 1, characterized in that: The conductive yarn is a metal-plated fiber, copper fiber, or silver fiber.

5. The self-powered thermal insulation fabric as described in claim 1, characterized in that: The heat insulation layer is an ETPU foam layer, the dielectric fabric is a PTFE fabric, and the conductive fabric is a silver-plated nylon fabric.

6. The self-powered thermal insulation fabric as described in claim 1, characterized in that: The warp yarns of the second layer of fabric pass through the third layer of fabric and are bound and interwoven together with the third layer of fabric; one end of the spacer yarn is interwoven with the first layer of fabric, and the other end of the spacer yarn is interwoven with the second layer of fabric.

7. The self-powered thermal insulation fabric as described in claim 5, characterized in that: The insulation layer is an ETPU foam particle layer, comprising several ETPU foam particles in contact with each other.

8. The self-powered thermal insulation fabric as described in claim 1, characterized in that: The volume of the heat insulation layer occupies 40% to 60% of the collision space.

9. A self-powered heating textile, characterized in that: It includes a heating fabric and a self-powered thermal insulation fabric as described in any one of claims 1 to 8, wherein the self-powered thermal insulation fabric is electrically connected to the heating fabric via an electrical connection and a control system.

10. A self-powered heating textile as described in claim 9, characterized in that: The electrical connection and control system includes a capacitor, the self-powered thermal insulation fabric is electrically connected to the capacitor, and the capacitor is electrically connected to the heating fabric.

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