CN109750403B - Power-generating fabrics, wearable devices, and sensors based on triboelectric nanogenerators - Google Patents
Power-generating fabrics, wearable devices, and sensors based on triboelectric nanogenerators Download PDFInfo
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- CN109750403B CN109750403B CN201711061294.9A CN201711061294A CN109750403B CN 109750403 B CN109750403 B CN 109750403B CN 201711061294 A CN201711061294 A CN 201711061294A CN 109750403 B CN109750403 B CN 109750403B
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Abstract
本发明公开了一种基于摩擦纳米发电机的发电布料、可穿戴装置、传感器。其中，该发电布料包括：第一摩擦线，第二摩擦线，以及弹性轴线，该第一摩擦线和第二摩擦线沿着弹性轴线编织起来；其中，该发电布料的第一摩擦线和第二摩擦线接触的部分具有不同的摩擦电极序；该弹性轴线进行弹性拉伸，第一摩擦线与第二摩擦线相互分离；弹性轴线实现弹性恢复，带动第一摩擦线与第二摩擦线相互接触。该发电布料具有高弹性和较好的柔韧性，能够自供电，将各种机械能转化为电能输出，提高用户体验，在一定程度上减少能量浪费，从而改善环境污染问题，穿戴舒适度高、透气性好、方便清洗，且制备工艺简单、选材广泛、成本低、可工业化大规模生产。
The invention discloses a power generation cloth, a wearable device and a sensor based on a triboelectric nanogenerator. Wherein, the power generation cloth includes: a first friction thread, a second friction thread, and an elastic axis, and the first friction thread and the second friction thread are woven along the elastic axis; wherein, the first friction thread and the second friction thread of the power generation cloth The parts where the two friction lines are in contact have different friction electrode sequences; the elastic axis is elastically stretched, and the first friction line and the second friction line are separated from each other; the elastic axis realizes elastic recovery, and drives the first friction line and the second friction line to mutually touch. The power generation fabric has high elasticity and good flexibility, can self-supply power, convert various mechanical energy into electrical energy output, improve user experience, reduce energy waste to a certain extent, thereby improving environmental pollution problems, high wearing comfort, breathable The utility model has the advantages of good performance, convenient cleaning, simple preparation process, wide selection of materials, low cost, and industrialized large-scale production.
Description
Technical Field
The invention belongs to the field of energy conversion, and relates to a friction nano generator-based power generation cloth, a wearable device and a sensor.
Background
In recent years, more and more wearable electronic products have entered the market, and they are silently changing the life style of people and creating considerable market value. However, as the number and kinds of wearable electronic products are increasing, the disadvantages thereof are becoming more and more obvious, and one of the key issues restricting the development of wearable technology is the service life and the standby time thereof. At present, wearable electronic products are powered by rechargeable batteries, and the electronic products are usually very small in size, so that only very small battery systems can be used, and the power consumption is very large due to the powerful functions of the wearable electronic products, which means that the current wearable equipment has great shortage in cruising ability, cannot be used frequently once the power is exhausted, and needs to be repeatedly charged and discharged, thereby not only affecting the use experience of users, but also greatly shortening the service life of the wearable electronic products.
Since the concepts of the triboelectric nanogenerator and the self-powered system were proposed, it became possible to convert various mechanical energies during human body movement into electric energies. At present, various wearable friction nano-generators are invented successively, but most of the generators select metal materials such as aluminum, copper, gold and silver or conductive materials such as carbon fiber and carbon nano tube as electrodes, and use polymer films as friction materials, so that the generators cannot be cleaned and cannot be airtight, and cannot be well integrated with clothes, and the generators lack practical application value.
Disclosure of Invention
Technical problem to be solved
The present disclosure provides a friction nanogenerator-based power generation cloth, a wearable device, and a sensor to at least partially solve the above-mentioned technical problems.
(II) technical scheme
According to an aspect of the present disclosure, there is provided a friction nanogenerator-based power generation cloth comprising: a first friction thread, a second friction thread, and an elastic axis, the first and second friction threads being braided along the elastic axis; wherein, the contact part of the first friction line and the second friction line of the power generation cloth has different friction electrode sequences; the elastic axis is elastically stretched, and the first friction line and the second friction line are separated from each other; the elastic axis realizes elastic recovery and drives the first friction line and the second friction line to contact with each other.
In some embodiments of the present disclosure, the first friction threads and the second friction threads comprise a plurality of rows, which are interwoven; the first friction line is of a continuous structure, and the second friction line is of a continuous structure; or each row of the first friction line and the second friction line is of a continuous structure, and the rows are electrically connected to realize circuit continuity.
In some embodiments of the present disclosure, the first friction wire and the second friction wire are made of core-spun wires with different friction electrode sequences or one of the first friction wire and the second friction wire is made of a conductive fiber material and the other of the first friction wire and the second friction wire is made of core-spun wire.
In some embodiments of the present disclosure, the structure of the cored wire includes: the conductive core layer and the insulating layer wrapped outside the conductive core layer; wherein, electrically conductive sandwich layer is prepared by electrically conductive fiber material, and electrically conductive fiber material includes: silver fibers, carbon fibers, graphene fibers, or carbon nanotube fibers; the insulating layer is made of an insulating material comprising: textile fiber materials or organic polymer materials; the textile fibre material comprises: cotton, wool, nylon, polyester, chinlon or spandex; an organic polymer material comprising: PTFE, PDMS, silica gel, PA6, PET, or PVDF.
In some embodiments of the present disclosure, the core-spun yarn is prepared by wrapping a textile fiber material on the surface of a conductive fiber material by a braiding machine; or the organic polymer material is coated on the surface of the conductive fiber material by using an impregnation method, an electrostatic spinning method or electrostatic adsorption.
In some embodiments of the present disclosure, the surface charge amount of the cored wire is increased by injecting charges into the surface of the cored wire, and the injecting charges include: high voltage corona charging, ion gun charge injection, or high temperature high voltage polarization.
In some embodiments of the present disclosure, the material selected for the elastic axis is an elastic textile material comprising: rubber fibers, PU fibers or silica gel fibers.
According to another aspect of the present disclosure, a sensor is provided, which comprises any one of the power generation cloths provided by the present disclosure, and is arranged at a movable position.
According to yet another aspect of the present disclosure, there is provided a wearable device comprising any one of the power generating cloths provided by the present disclosure, or a sensor provided by the present disclosure.
In some embodiments of the present disclosure, a wearable device comprises: knee pads, wristbands, gloves, waistbands, scarves, coats, pants, or insoles.
(III) advantageous effects
According to the technical scheme, the power generation cloth, the wearable device and the sensor based on the friction nanometer generator have the following beneficial effects:
the core-spun yarn formed by wrapping conductive fiber materials by different insulating materials is selected as two friction yarns, or one friction yarn is made of a conductive fiber material, an elastic axis is taken as an axis, the two friction yarns are woven together along the elastic axis, the power generation cloth formed by the three friction yarns has high elasticity and good flexibility, electric energy can be output when the power generation cloth is stretched, bent or pressed or the power generation cloth is rubbed with other materials, the power generation cloth is manufactured into wearable devices such as knee pads, wristbands, gloves, waistbands, scarves, coats, trousers, insoles and the like, various types of mechanical energy such as walking, joint bending, arm swinging, clothes shaking and deformation of a human body can be converted into electric energy, the wearable electronic products are powered or used as high-sensitivity sensors, the power generation cloth is applied to the fields such as human motion monitoring, gesture recognition and the like, and the standby time and the service life of the wearable devices are greatly prolonged, the environment-friendly clothes have the advantages of improving user experience, reducing energy waste to a certain extent, improving the problem of environmental pollution, being high in wearing comfort, good in air permeability, convenient to clean, simple in preparation process, wide in material selection, low in cost and capable of realizing industrial large-scale production.
Drawings
Fig. 1 is a schematic diagram of a typical structure of a friction nano-generator-based power generation cloth according to an embodiment of the present disclosure.
Fig. 2 is a schematic diagram of an exemplary structure of a cored wire according to an embodiment of the disclosure.
Fig. 3 is a schematic diagram of the operation of a friction nanogenerator-based power generation fabric in a stretching mode according to an embodiment of the disclosure.
FIG. 4A is an open circuit voltage V at a stretched length of 60% for a friction nanogenerator-based power generating cloth according to an embodiment of the disclosureOCAnd outputting the curve.
FIG. 4B is a short circuit current I for a triboelectric nanogenerator-based power generation cloth at a stretched length of 60% according to an embodiment of the disclosureSCAnd outputting the curve.
FIG. 4C is an open circuit voltage V of a triboelectric nanogenerator-based power generation cloth according to an embodiment of the disclosureOCAnd short-circuit current ISCCurve with stretched length.
Fig. 5 is a schematic diagram of the operation of a friction nanogenerator-based power generation cloth in a contact-separation mode according to an embodiment of the disclosure.
FIG. 6A is an open circuit voltage V at a separation distance of 10mm for a friction nanogenerator-based power generating cloth according to an embodiment of the disclosureOCAnd outputting the curve.
FIG. 6B is a short circuit current I of a friction nanogenerator-based power generation cloth at a separation distance of 10mm according to an embodiment of the disclosureSCAnd outputting the curve.
FIG. 6C is an open circuit voltage V of a triboelectric nanogenerator-based power generation cloth according to an embodiment of the disclosureOCAnd short-circuit current ISCVersus separation distance.
[ notation ] to show
1-a first friction line; 2-a second friction line;
3-elastic axis;
4-conductive fiber material; 5-an insulating material;
6-silver conductive fibers; 7-polyester fiber;
8-silver conductive fibers; 9-external friction layer.
Detailed Description
The utility model provides a generate electricity cloth based on friction nanometer generator, wearable device, the sensor, have high elasticity and better pliability, stretch it, can output the electric energy when effect such as bending or press or rub it with other materials, for wearable electronic product power supply or as high sensitivity sensor, be applied to human motion monitoring, fields such as gesture recognition, greatly prolong wearable equipment's stand-by time and life, improve user experience, reduce energy waste to a certain extent, thereby improve the environmental pollution problem, it is high to dress the comfort level, the gas permeability is good, convenient washing, and preparation simple process, the selection material is extensive, with low costs, but industrialization large-scale production.
For the purpose of promoting a better understanding of the objects, aspects and advantages of the present disclosure, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
In a first exemplary embodiment of the present disclosure, a friction nanogenerator-based power generation cloth is provided.
Fig. 1 is a schematic diagram of a typical structure of a friction nano-generator-based power generation cloth according to an embodiment of the present disclosure.
Referring to fig. 1, the disclosed power generation cloth based on friction nano-generator includes: a first friction thread 1, a second friction thread 2, and an elastic axis 3, the first friction thread 1 and the second friction thread 2 being woven along the elastic axis 3; wherein, the contact part of the first friction line 1 and the second friction line 2 of the power generation cloth has different friction electrode sequences; the elastic axis 3 is elastically stretched, and the first friction line 1 and the second friction line 2 are separated from each other; the elastic axis 3 realizes elastic recovery and drives the first friction line 1 and the second friction line 2 to contact with each other.
The details of the parts of the power generation cloth based on the friction nano-generator in the embodiment are described below.
In this embodiment, the first friction wire 1 and the second friction wire 2 are cored wires formed by wrapping conductive fiber materials 4 with different insulating materials 5, or one of the friction wires is made of the conductive fiber materials 4, and the other friction wire is made of the cored wires.
Fig. 2 is a schematic diagram of an exemplary structure of a cored wire according to an embodiment of the disclosure. Referring to fig. 2, the core-spun yarn includes: the conductive core layer and the insulating layer that wraps up outside the conductive core layer, wherein, the conductive core layer is prepared by conductive fiber material 4, and conductive fiber material 4 can select but not the following material: silver fibers, carbon fibers, graphene fibers, carbon nanotube fibers, and the like; the insulating layer is made of an insulating material 5, and the insulating material 5 can be selected from, but is not limited to, the following materials: a textile fibre material comprising: cotton, wool, nylon, terylene, chinlon, spandex, etc.; or an organic polymer material comprising: PTFE, PDMS, silica gel, PA6, PET, PVDF, etc.
In this embodiment, a method for preparing the core-spun yarn is to wrap textile fiber materials such as cotton, wool, nylon, terylene, chinlon, spandex and the like on the surface of the conductive fiber material 4 by using a rope belt knitting machine, so that the inside of the conductive fiber material is conductive and the outside of the conductive fiber material is insulated; alternatively, an organic polymer material such as PTFE, PDMS, silica gel, PA6, PET, or PVDF is coated on the surface of the conductive fiber material 4 by dipping, electrospinning, or electrostatic adsorption, and the inside is electrically conductive and the outside is insulated. Preferably, in order to increase the surface charge amount of the cored wire, the surface thereof may be subjected to charge injection using a high voltage corona charging method, an ion gun charge injection method, a high temperature and high voltage polarization method, or the like.
In this embodiment, the elastic axis 3 is made of materials including, but not limited to: elastic textile materials such as rubber fiber, PU fiber, silica gel fiber and the like.
In the embodiment, the power generation cloth uses a loom to take an elastic axis as an axis, and the first friction line 1 and the second friction line 2 are woven in a staggered manner to form a plain weave; it should be noted that the weave structure of the present disclosure is not limited to plain weave, but may be twill weave or other types of common weaves, including: original tissue, altered tissue, combined tissue, and heavy tissue, among others.
In this embodiment, the elastic axis 3 has at least the following functions: firstly, weaving the first friction line 1 and the second friction line 2 to form a high-elasticity tissue, and enabling the power generation cloth to have good air permeability and flexibility; the first friction line 1 and the second friction line 2 can be contacted and rubbed under the elastic action of the elastic axis, after the first friction line 1 and the second friction line 2 are stretched by external force, the first friction line 1 and the second friction line 2 can be separated, and after the external force is removed, the first friction line and the second friction line can be recovered according to the elasticity of the first friction line 1 and can be restored to a state of being contacted and rubbed again, so that power generation is realized.
The power generation cloth based on the friction nano generator in the embodiment has two working modes: a stretch mode and a contact-separation mode.
Under the tensile mode, when exerting external force and pulling this electricity generation cloth, because the effect of elasticity axis 3 for this electricity generation cloth can be elongated, and this electricity generation cloth can contract back to the original shape when removing external force, thereby drives first friction line 1 and second friction line 2 and constantly contacts each other and separates, will produce an alternating current like this in the load. Fig. 3 is a schematic diagram of the operation of a friction nanogenerator-based power generation fabric in a stretching mode according to an embodiment of the disclosure. In the embodiment, a core-spun yarn with a conductive core layer made of silver conductive fibers 6 and an insulating layer wrapped outside made of polyester fibers 7 is selected as a first friction yarn 1 of the friction nano-generator, and a silver conductive fiber 8 is selected as a second friction yarn 2, so that the working principle of the power generation cloth in a stretching mode is specifically described. When the core-spun yarn is selected as the first friction yarn and the conductive fiber material is selected as the second friction yarn, the conductive fiber material of the second friction yarn may be the same as or different from the conductive core layer in the first friction yarn.
Referring to fig. 3, in an initial state, the first friction thread 1 and the second friction thread 2 are tightly woven together, and due to a triboelectric effect, when the polyester fiber 7 is in contact with the silver conductive fiber 8, the silver conductive fiber 8 loses electrons, and the polyester fiber 7 gets electrons, so that the surface of the silver conductive fiber 8 is positively charged, and the surface of the polyester fiber 7 is negatively charged, as shown in fig. 3 (a); when an external force is applied to stretch the power generation cloth, the first friction line 1 and the second friction line 2 are separated from each other under the driving of the elastic axis 3, electrons flow from the first friction line 1 to the second friction line 2 through an external circuit due to an electrostatic induction effect, the external circuit in the figure is indicated by a load R, and the current flow is indicated by a black arrow, so that a current i flowing from the second friction line 2 to the first friction line 1 is formed, as shown in fig. 3 (b); when the distance separating the first friction line 1 and the second friction line 2 reaches the maximum, the electrons stop flowing, and there is no current flowing in the external circuit (load R), as shown in fig. 3 (c); subsequently, when the external force is removed, the power generating cloth contracts, so that the first friction line 1 and the second friction line 2 are in contact with each other under the driving of the elastic axis 3, and electrons flow from the second friction line 2 to the first friction line 1 through an external circuit (load R) due to the electrostatic induction effect, so that a current i flowing from the first friction line 1 to the second friction line 2 is formed, as shown in fig. 3 (d); when the cloth is completely contracted back to its original shape, as shown in fig. 3 (a), all the induced charges are neutralized, so that no current flows to the external circuit. Repeating the above process periodically produces an alternating current output at the external circuit (load R).
In this embodiment, the electricity output performance test was performed in a stretching mode using the electricity generation cloth based on the friction nano-generator having a size of 9cm × 4.5cm, in which an external force was applied to the electricity generation cloth by using a linear motor to stretch the electricity generation cloth.
FIGS. 4A-4C are graphs of electrical output performance of friction nanogenerator-based power generation cloth in a stretching mode according to an embodiment of the disclosure, wherein FIG. 4A is an open-circuit voltage V of the friction nanogenerator-based power generation cloth in a stretching length of 60% according to an embodiment of the disclosureOCOutputting a curve; FIG. 4B is a short circuit current I for a triboelectric nanogenerator-based power generation cloth at a stretched length of 60% according to an embodiment of the disclosureSCOutputting a curve; FIG. 4C is an open circuit voltage V of a triboelectric nanogenerator-based power generation cloth according to an embodiment of the disclosureOCAnd short-circuit current ISCCurve with stretched length.
As can be seen from FIGS. 4A-4C: the electricity output performance of the power generation cloth in a stretching mode is positively correlated with the stretching length; the range of tensile strain is: 10% -100%, the open circuit voltage is: 0.7V-3.5V; the short-circuit current is: 0.2nA to 3 nA. When the stretching length is 60%Open circuit voltage V of the power generation clothOCAt 2V, as shown in FIG. 4A, short-circuit current ISC2nA, as shown in FIG. 4B, open circuit voltage VOCAnd short-circuit current ISCAre all positively correlated with the extension length, wherein the short-circuit current ISCLinearity with the stretched length is better as shown in fig. 4C.
In the contact-separation mode, the power generation cloth is put into contact with other objects such as: cloth, skin, ground and the like rub against each other, and an alternating current is generated in a load due to triboelectrification and electrostatic induction effects. Fig. 5 is a schematic diagram of the operation of a friction nanogenerator-based power generation cloth in a contact-separation mode according to an embodiment of the disclosure. In the embodiment, a core-spun yarn with a conductive core layer made of silver conductive fibers 6 and an insulating layer wrapped outside made of polyester fibers 7 is selected as a first friction yarn 1 of the friction nano-generator, silver conductive fibers 8 are selected as a second friction yarn 2, and cotton cloth is selected as an external friction layer 9, so that the working principle of the power generation cloth in a contact-separation mode is specifically described. When the core-spun yarn is selected as the first friction yarn and the conductive fiber material is selected as the second friction yarn, the conductive fiber material of the second friction yarn may be the same as or different from the conductive core layer in the first friction yarn.
Referring to fig. 5, the external friction layer 9 is completely contacted with the power generation cloth, and if both are not electrified in advance, due to the frictional electrification effect, when the terylene 7 is contacted with the cotton cloth serving as the external friction layer 9, the cotton cloth loses electrons, and the terylene 7 gets electrons; when the silver fiber 8 contacts with the cotton cloth, the silver fiber 8 loses electrons, and the cotton cloth 9 gains electrons, so that charge distribution as shown in fig. 5 (a) is generated on the first friction line 1, the second friction line 2 and the external friction layer 9; when the external friction layer 9 starts to separate from the power generating cloth under the driving of the external force, electrons flow from the first friction line 1 to the second friction line 2 through the external circuit, which is indicated by the load R and the current flow is indicated by the black arrow, due to the electrostatic induction effect, so as to form a current i flowing from the second friction line 2 to the first friction line 1, as shown in fig. 5 (b); when the distance separating the external friction layer 9 from the power generating cloth reaches the maximum, the electrons stop flowing, and no current flows in the external circuit (load R), as shown in fig. 5 (c); subsequently, when the external friction layer 9 is driven by the external force to approach the power generating cloth again, due to the electrostatic induction effect, electrons flow back to the first friction line 1 from the second friction line 2 through the external circuit (load R), and a current i flows from the first friction electrode 1 to the second friction electrode 2, as shown in fig. 5 (d); when the external friction layer 9 and the power generation cloth are brought into full contact again by the external force, as shown in fig. 5 (a), all the induced charges are neutralized, and thus there is no current in the external circuit (load R). Repeating the above process periodically produces an alternating current output at the external circuit (load R).
In this embodiment, the electricity output performance test was performed in a stretching mode using the electricity generating cloth based on the friction nano-generator with a size of 9cm × 4.5cm, in which an external friction layer 9 is periodically driven to contact and separate with the electricity generating cloth by using a linear motor.
FIGS. 6A-6C are graphs of electrical output performance of friction nanogenerator-based power generation cloth in contact-separation mode according to an embodiment of the disclosure, wherein FIG. 6A is an open-circuit voltage V of the friction nanogenerator-based power generation cloth at a separation distance of 10mm according to an embodiment of the disclosureOCOutputting a curve; FIG. 6B is a short circuit current I of a friction nanogenerator-based power generation cloth at a separation distance of 10mm according to an embodiment of the disclosureSCOutputting a curve; FIG. 6C is an open circuit voltage V of a triboelectric nanogenerator-based power generation cloth according to an embodiment of the disclosureOCAnd short-circuit current ISCVersus separation distance.
As can be seen from FIGS. 6A-6C: the electrical output performance of the power generation cloth in the stretching mode is related to the separation distance between the power generation cloth and the external friction layer, and when the separation distance is 10mm, the open-circuit voltage V of the power generation clothOCAt 25V, as shown in FIG. 6A, the short-circuit current ISC0.75 μ A, as shown in FIG. 6B, open circuit voltage VOCAnd short-circuit current ISCSubstantially the same as the relation between the separation distancesWhen the distance is less than 6mm, the open-circuit voltage V increases with the increase of the distanceOCAnd short-circuit current ISCAll show a rapid increase, and when the separation distance exceeds 6mm, the open-circuit voltage VOCAnd short-circuit current ISCIncreases more slowly and eventually approaches a steady maximum, as shown in fig. 6C.
In a second exemplary embodiment of the present disclosure, a wearable device made of the friction nanogenerator-based power generation cloth shown in the present disclosure is provided.
In this embodiment, the wearable device includes: knee-pad, wrist band, gloves, waistband, scarf, jacket, trousers, shoe-pad etc. can effectively realize the self-power, do not need extra power supply device such as battery, greatly prolong wearable equipment's standby time and life, improve user experience, reduce energy waste to a certain extent to improve the environmental pollution problem, and dress comfort level is high, the gas permeability is good, convenient the washing.
In a third exemplary embodiment of the present disclosure, a sensor is provided that includes a triboelectric nanogenerator-based power generation cloth of the present disclosure.
In this embodiment, the sensor is disposed at a movable portion, particularly near a living body such as a joint portion or a heart, and can convert mechanical energy of joint movement into electrical energy, and can be applied to the fields of human body movement monitoring, gesture recognition, and the like.
The sensor can also be a wearable device such as a knee pad, a wrist pad, gloves, a waistband, a scarf, a jacket, trousers, an insole and the like which are prepared by using power generation cloth based on a friction nano generator, can convert various mechanical energy of a human body into electric energy to realize self-power supply, and can reflect the corresponding state of the human body through the output condition of the electric energy, for example, when the sensor is applied to a knee pad, the motion condition of the human can be effectively monitored, and if the sensor falls down, the motion condition of the human body can be reflected through the change of voltage output.
In conclusion, the present disclosure provides a friction nanometer generator-based power generation cloth, a wearable device and a sensor. The core-spun yarn formed by wrapping conductive fiber materials by different insulating materials is selected as two friction parts, or one friction part is made of a conductive fiber material, and the two friction parts are woven together by using an elastic axis as an axis, so that the power generation cloth formed by the three parts has high elasticity and better flexibility, can output electric energy when being stretched, bent or pressed or being rubbed with other materials, and can be made into wearable devices such as knee pads, wristbands, gloves, waistbands, scarves, coats, trousers, insoles and the like, and can convert various types of mechanical energy such as walking, joint bending, arm swinging, clothing shaking and deformation of a human body into electric energy to supply power for wearable electronic products or be used as a high-sensitivity sensor, is applied to the fields of human motion monitoring, gesture recognition and the like, and greatly prolongs the standby time and the service life of wearable equipment, the environment-friendly clothes have the advantages of improving user experience, reducing energy waste to a certain extent, improving the problem of environmental pollution, being high in wearing comfort, good in air permeability, convenient to clean, simple in preparation process, wide in material selection, low in cost and capable of realizing industrial large-scale production.
It is noted that the word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The use of ordinal numbers such as "first," "second," "third," etc., in the specification and claims to modify a corresponding element does not by itself connote any ordinal number of the element or any ordering of one element from another or the order of manufacture, and the use of the ordinal numbers is only used to distinguish one element having a certain name from another element having a same name.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the disclosure, various features of the disclosure are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various disclosed aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that is, the claimed disclosure requires more features than are expressly recited in each claim. Rather, as the following claims reflect, disclosed aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this disclosure.
The above-mentioned embodiments are intended to illustrate the objects, aspects and advantages of the present disclosure in further detail, and it should be understood that the above-mentioned embodiments are only illustrative of the present disclosure and are not intended to limit the present disclosure, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (10)
1. A friction nanogenerator-based power generation cloth comprising:
a first friction thread, a second friction thread, and an elastic axis, the first and second friction threads being braided along the elastic axis;
wherein, the contact part of the first friction line and the second friction line of the power generation cloth has different friction electrode sequences; the elastic axis is elastically stretched, and the first friction line and the second friction line are separated from each other; the elastic axis realizes elastic recovery and drives the first friction line and the second friction line to contact with each other;
the first friction wire and the second friction wire are made of core-spun wires with different friction electrode sequences or one of the first friction wire and the second friction wire is made of a conductive fiber material, and the other friction wire is made of a core-spun wire; the structure of the cored wire comprises: the conductive core layer and wrap up the insulating layer outside the conductive core layer.
2. The power generating cloth of claim 1, wherein the first and second friction threads comprise a plurality of rows that are interwoven;
the first friction line is of a continuous structure, and the second friction line is of a continuous structure; or
Each row of the first friction line and the second friction line is of a continuous structure, and the rows are electrically connected to realize circuit continuity.
3. The power generating cloth of claim 1,
wherein, electrically conductive sandwich layer is prepared by electrically conductive fiber material, and electrically conductive fiber material includes: silver fibers, carbon fibers, graphene fibers, or carbon nanotube fibers;
the insulating layer is made of an insulating material comprising: textile fiber materials or organic polymer materials;
the textile fibre material comprises: cotton, wool, nylon, polyester, chinlon or spandex;
the organic polymer material comprises: PTFE, PDMS, silica gel, PA6, PET, or PVDF.
4. The power generating cloth of claim 3, wherein the core-spun yarn is prepared by wrapping a textile fiber material on the surface of a conductive fiber material by a braiding machine; or the organic polymer material is coated on the surface of the conductive fiber material by using an impregnation method, an electrostatic spinning method or electrostatic adsorption.
5. The power generation cloth according to any one of claims 1 to 4, wherein the surface charge amount of the cored wire is increased on the surface of the cored wire by means of charge injection, and the charge injection comprises: high voltage corona charging, ion gun charge injection, or high temperature high voltage polarization.
6. The power generating cloth of any one of claims 1 to 4, wherein the elastic axis is made of an elastic textile material comprising: rubber fibers, PU fibers or silica gel fibers.
7. A power generating cloth according to claim 5, wherein the elastic axis is selected from an elastic textile material comprising: rubber fibers, PU fibers or silica gel fibers.
8. A sensor comprising the power generating cloth of any one of claims 1 to 7, disposed at a movable location.
9. A wearable device comprising the power generating cloth of any of claims 1 to 7, or the sensor of claim 8.
10. The wearable device of claim 9, comprising: knee pads, wristbands, gloves, waistbands, scarves, coats, pants, or insoles.
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| CN110535371A (en) * | 2019-09-04 | 2019-12-03 | 东华大学 | A kind of integral type weaving base friction nanometer power generator based on loop construction |
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| CN110840403A (en) * | 2019-11-21 | 2020-02-28 | 嘉兴脉腾科技有限公司 | Self-powered fabric sensor and monitoring system |
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| CN112535473A (en) * | 2020-12-01 | 2021-03-23 | 东南大学 | Wearable nano sensor for measuring clothes and measuring system thereof |
| CN112603270A (en) * | 2021-01-06 | 2021-04-06 | 嘉兴脉腾科技有限公司 | Full-fabric friction force sensor, sleep monitoring system and sleep monitoring method |
| CN113197569B (en) * | 2021-04-23 | 2022-05-20 | 华中科技大学 | Human Intention Recognition Sensor and Recognition Method Based on Triboelectric Generation |
| CN113718397B (en) * | 2021-08-23 | 2022-10-14 | 中山大学 | Fabrication method and application of a fabric-based wearable composite energy harvesting device |
| CN114959998A (en) * | 2022-05-19 | 2022-08-30 | 深圳大学 | Flexible self-powered sensor and preparation method thereof |
| CN115024540B (en) * | 2022-06-30 | 2023-12-12 | 电子科技大学 | Respiratory monitoring mask based on triboelectric nanogenerator and preparation method |
| CN115696660A (en) * | 2022-09-19 | 2023-02-03 | 杭州量春科技有限公司 | A kind of graphene power generation heating cloth and preparation method thereof |
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