Power generation structure suitable for absorptive article, corresponding absorption core body and absorptive article

Abstract

The utility model discloses a power generation structure suitable for an absorptive article, a corresponding absorption core body and the absorptive article. The power generation structure comprises a first electrode, a second electrode, a first conductive region and a second conductive region, the first conductive region and the second conductive region are arranged between the first electrode and the second electrode, the first conductive region is arranged close to the first electrode side, and the second conductive region is arranged close to the second electrode side; the liquid evaporation rate of the first conductive area is smaller than that of the second conductive area. On the basis of the power generation structure, wetting differences can be produced in corresponding absorption cores and absorption articles, urine evaporation rate differences are controlled, and then current output is achieved. Compared with a traditional intelligent absorptive article powered by a battery, the absorptive article does not need to be provided with an external battery, the absorptive article can generate electricity by itself through evaporation of liquid, energy is saved, the environment is protected, and meanwhile the influence of the external battery on safety and comfort is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of sanitary articles, and more specifically, to a power generation structure applicable to absorbent articles, a corresponding absorbent core, and an absorbent article. Background Art

[0002] As one of the important innovations in the fields of baby and adult care, intelligent diapers have introduced various electronic devices and sensors to monitor data such as humidity, temperature, urine composition, etc., so as to provide a higher level of comfort, hygiene and user experience. However, existing intelligent diapers still pose challenges in terms of battery life, size and weight, which limit their performance and sustainability. A common power supply method is to use an external battery, but the external battery configuration will affect the comfort and safety of diaper wearing.

[0003] Therefore, there is an urgent need in the prior art for an absorbent article or a structure applicable to absorbent articles to effectively solve the problems of battery life, weight, etc. of intelligent absorbent articles caused by the external power supply structure, and to overcome the influence of the external power supply structure on the comfort and safety of absorbent articles. Summary of the Utility Model

[0004] The utility model aims to overcome at least one of the above-mentioned deficiencies in the prior art, and provides a power generation structure applicable to absorbent articles, a corresponding absorbent core, and an absorbent article, which are used to solve the problems of battery life, weight, etc. of intelligent absorbent articles caused by the external power supply structure, and to overcome the influence of the external power supply structure on the comfort and safety of absorbent articles.

[0005] The technical solution adopted by the present utility model is a power generation structure applicable to absorbent articles, which includes a first electrode, a second electrode, a first conductive region, and a second conductive region. The first conductive region and the second conductive region are arranged between the first electrode and the second electrode, and the first conductive region is connected to the second conductive region. The second conductive region is arranged closer to the second electrode side. The liquid evaporation rate of the first conductive region is less than that of the second conductive region. After entering the first conductive region and the second conductive region, due to the different evaporation rates of the liquid in the first conductive region and the second conductive region, there is a wetting difference between the first conductive region and the second conductive region, and a certain potential difference is formed between the first electrode and the second electrode, thereby realizing the power generation function. By using the power generation structure of the present application, the intelligent diaper can overcome the defects brought by the traditional external battery method. The first conductive region and the second conductive region can be formed by conductive materials with soft characteristics such as conductive fibers, and still show a fiber layer structure with a certain flexibility, providing the power generation function while ensuring the light and comfortable wearing effect. Whether the first electrode and the second electrode adopt common small three-dimensional structure single electrodes or printed electrodes, etc., the space occupied, the arrangement position, etc. have basically no impact on the comfort of the diaper, and compared with the external battery, the impact on the diaper is significantly reduced. Through the cooperation of the conductive regions with different evaporation rates and the electrodes at both ends in the present application, it is beneficial to realize self-power generation by using liquid. For intelligent absorbent articles that need to be used for a long time, power supply for a long service life can be realized, avoiding problems such as the service life of external batteries.

[0006] Further, the first electrode, the first conductive region, the second conductive region, and the second electrode are arranged in sequence; further, the first conductive region and the second conductive region are adjacent to each other; the first conductive region is adjacent to the second conductive region. The first conductive region and the second conductive region receive the liquid entering the power generation structure. Further, the liquid enters the second conductive region through the first conductive region. Further still, the first electrode, the first conductive region, the second conductive region, and the second electrode are arranged in sequence in the horizontal direction, that is, arranged in sequence in the same horizontal direction. In one or more embodiments of the present application, a structure in which the first electrode, the first conductive region, the second conductive region, and the second electrode are arranged horizontally in sequence is adopted. This type of structure can concentrate the power generation structure in the same layer. On the one hand, it is beneficial to make the power generation structure relatively independent, facilitating actual production or assembly and use; on the other hand, the horizontal same-layer structure is conducive to making the liquid volume entering the first conductive region and the second conductive region the same or basically similar, improving controllability, so as to make full use of the different evaporation rates to generate a relatively large wetting difference, and further promoting the generation of potential difference. There are various ways for the liquid to enter the power generation structure. One of them includes entering the second conductive region through the first conductive region; this type of method is convenient for arranging the liquid flow channels in the absorbent article. Only by forming a liquid inlet passage on one side of the first conductive region or the first electrode, the liquid can smoothly enter the power generation structure, reducing the exposure of the overall power generation structure and improving stability; in addition, in this type of method, although the liquid first enters the first conductive region, due to the slower evaporation rate of the first conductive region, the loss of the liquid in the first conductive region is actually smaller, so the impact on generating the wetting difference is not obvious, and the expected wetting difference can still be guaranteed macroscopically.

[0007] Further, the first conductive region and the second conductive region are formed by the oriented arrangement of conductive fibers, and the arrangement density of the conductive fibers in the second conductive region is greater than that in the first conductive region. In the present application, by setting different arrangement densities of conductive fibers in the first conductive region and the second conductive region, the evaporation rate difference between the two conductive regions is generated. Oriented arrangement can refer to the state in which the molecular chains or chain segments or microcrystals in a polymer are arranged preferentially in a certain direction or parallel to a certain plane. This arrangement can be an ordered arrangement along a certain specific direction, that is, orientation, and this polymer is in an oriented state. The oriented state can be uniaxial (one-dimensional) or biaxial (two-dimensional) order, while the crystalline state is three-dimensional order. The polymer oriented structure refers to the structure in which molecular chains or other structural units are preferentially arranged along the direction of the external force under the action of a certain external force.

[0008] Further, the conductive fiber is a fiber treated with conductive carbon black.

[0009] Further, a hydrophobic region is provided on the side of the second electrode close to the second conductive region; and / or, a hydrophobic region is provided on the side of the first electrode close to the first conductive region. Providing a hydrophobic region on the side of the electrode close to the conductive region can prevent the electrode from being wetted by the liquid, which is conducive to the continuous use and power generation of the liquid-wetting power generation structure.

[0010] Further, a liquid-blocking region is provided below the first conductive region and / or the second conductive region. Since the volume and pressure of the liquid are relatively large during the initial diffusion stage, the liquid-blocking region can effectively prevent the liquid from seeping out.

[0011] Another object of the present invention is to provide an absorbent core, which includes at least one of the aforementioned power generation structures.

[0012] Further, it further includes a surface layer, the surface layer is located above the power generation structure, and longitudinal diversion channels are provided on the surface layer; the longitudinal diversion channels divert the liquid to the power generation structure. Further, the longitudinal diversion channels divert the liquid to the first electrode side of the power generation structure. Further, the first electrode of the power generation structure is arranged on the side beside the path direction of the longitudinal diversion channels. When the liquid falls on the surface layer, the liquid can quickly conduct vertically along the longitudinal diversion channels to the area where the power generation structure is located.

[0013] Further, it includes two power generation structures, and the two power generation structures are symmetrically arranged; a water-conducting gap is left between the first electrodes of the two power generation structures, and the water-conducting gap is opposite to the lower end of the longitudinal diversion channels. Further still, a hydrophobic region is provided on the side of the second electrode close to the second conductive region. Further still, a liquid-blocking region is provided below the first conductive region.

[0014] Further, surface protrusion structures are provided on the surface of the surface layer structure. The surface protrusion structures can be composed of superhydrophobic ultrafine fibers, which will not be wetted by the liquid and can maintain a dry state. In addition, the ultrafine fibers can provide good skin-friendly properties, improve wearing comfort, and improve the use experience.

[0015] Another object of the present invention is to provide an absorbent article, which includes the aforementioned power generation structure or the aforementioned absorbent core. The absorbent article includes a diaper. That is, through the configuration of the above power generation structure or the configuration of the absorbent core, the problems existing in the absorbent article in the prior art, such as the limited battery life of the external power supply battery and the discomfort and inconvenience brought by the external power supply structure, can be effectively solved, and the comfort and safety of the absorbent article can be improved.

[0016] Further, it includes an absorbent article main body and the aforementioned absorbent core; the absorbent article main body includes a front waist, a rear waist and a crotch, and the absorbent core is arranged in the crotch of the absorbent article main body.

[0017] Furthermore, the crotch portion of the absorbent article includes a lining on the skin-friendly side and an outer layer on the outer side, and the absorbent core is disposed between the lining and the outer layer; alternatively, the absorbent core is disposed on the skin-friendly side, and the surface layer structure of the absorbent core forms the lining of the crotch portion of the absorbent article.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows: A power generation structure applicable to absorbent articles is provided. Based on the power generation method of the power generation structure of the present application, the evaporation process of urine can be utilized to supply power to the intelligent absorbent article while ensuring the original comfort of the absorbent article. Based on the power generation structure, wetting differences can be created in the corresponding absorbent core and absorbent article, and the difference in urine evaporation rate can be controlled, thereby realizing the output of current. Compared with the intelligent absorbent article powered by a traditional battery, the present application does not require the configuration of an external battery, and the absorbent article can generate electricity by itself using the evaporation of liquid (such as urine). While saving energy and protecting the environment, it avoids the impact on safety and comfort caused by external batteries. The power generation structure and corresponding power generation method applicable to absorbent articles proposed in the present application, as a major technological innovation, can bring revolutionary changes to the field of intelligent absorbent articles, improving the performance, sustainability, and user experience of intelligent absorbent articles. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the power generation structure of the present utility model.

[0020] Figure 2 It is a schematic structural diagram (one) of the absorbent core of the present utility model.

[0021] Figure 3 It is a schematic structural diagram (two) of the absorbent core of the present utility model.

[0022] Figure 4 It is a schematic structural diagram (one) of the absorbent article of the present utility model.

[0023] Figure 5 It is a schematic structural diagram (two) of the absorbent article of the present utility model.

[0024] BRIEF DESCRIPTION OF THE DRAWINGS: Absorbent article 100, front waist portion 110, rear waist portion 120, crotch portion 130, lining 140, outer layer 150, absorbent core 200, power generation structure 210, first electrode 211, second electrode 212, first conductive region 213, second conductive region 214, hydrophobic region 215, liquid blocking region 216, water guiding void 220, surface layer 230, longitudinal water guiding channel 231, surface protrusion structure 232. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The attached drawings of the present utility model are only for illustrative purposes and should not be construed as a limitation to the present utility model. For better illustration of the following embodiments, some components in the drawings may be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0026] Embodiment 1

[0027] As Figure 1 shown, this embodiment discloses a power generation structure 210 applicable to absorbent articles, including a first electrode 211, a second electrode 212, a first conductive region 213, and a second conductive region 214. The first conductive region 213 and the second conductive region 214 receive the liquid entering the power generation structure 210. The first conductive region 213 and the second conductive region 214 are disposed between the first electrode 211 and the second electrode 212. The first conductive region 213 is connected to the second conductive region 214, and the first conductive region 213 is disposed closer to the first electrode 211 side, and the second conductive region 214 is disposed closer to the second electrode 212 side; the liquid evaporation rate of the first conductive region 213 is less than that of the second conductive region 214; a potential difference is formed between the first electrode 211 and the second electrode 212, and the potential difference can be 180 mV to 10 V.

[0028] After entering the first conductive region 213 and the second conductive region 214, due to the different evaporation rates of the liquid in the first conductive region 213 and the second conductive region 214, there is a wetting difference between the first conductive region 213 and the second conductive region 214, and a certain potential difference is formed between the first electrode 211 and the second electrode 212, thereby realizing the power generation function. By using the power generation structure 210 of the present application, the intelligent diaper can overcome the defects brought by the traditional external battery method. The first conductive region 213 and the second conductive region 214 are shown as fiber layer structures with a certain flexibility, providing the power generation function while ensuring the light and comfortable wearing effect. Through the conductive regions with different evaporation rates in the present application, potential differences are formed between the electrodes in each conductive region, which is beneficial to realize self-power generation by using the liquid. For intelligent absorbent articles that need to be used for a long time, power supply for a long service life can be realized, avoiding problems such as the service life of external batteries.

[0029] In this embodiment, the first electrode 211, the first conductive region 213, the second conductive region 214, and the second electrode 212 are arranged horizontally in sequence, that is, arranged in sequence in the same horizontal direction, and the first conductive region 213 is adjacent to the second conductive region 214. The first conductive region 213 and the second conductive region 214 are formed by the oriented arrangement of conductive fibers, and the arrangement density of the conductive fibers in the second conductive region 214 is greater than that in the first conductive region 213. For example, the arrangement density of the conductive fibers in the second conductive region 214 can be 1.5 to 5 times that of the first conductive region 213. By setting different arrangement densities of the conductive fibers in the first conductive region 213 and the second conductive region 214, the present application makes the evaporation rates of the two conductive regions different. And the conductive fiber is a fiber treated with conductive carbon black.

[0030] In addition to setting conductive regions with different evaporation rates by setting different densities of conductive fibers, temperature and ventilation methods can also be combined or used alone to form conductive regions with different evaporation rates; for example, a heating component is arranged below the second conductive region 214, and the heating component can include a material that generates heat when contacting urine, so as to promote the evaporation rate of the second conductive region 214 to be greater than that of the first conductive region 213; further, a heat insulation structure can be formed between the first conductive region 213 and the second conductive region 214 to ensure that only the second conductive region 214 is heated. Another example is to adopt a porous ventilation structure in the lower layer structure corresponding to the second conductive region 214 to enhance the gas flow in the second conductive region 214 and promote the evaporation rate of the second conductive region 214 to be greater than that of the first conductive region 213.

[0031] In this embodiment, a hydrophobic region 215 can also be arranged on the side of the second electrode 212 close to the second conductive region 214; and / or, a hydrophobic region 215 can be arranged on the side of the first electrode 211 close to the first conductive region 213. A liquid blocking region 216 is arranged below the first conductive region 213 and / or the second conductive region 214. Since the volume and pressure of the liquid are relatively large in the initial diffusion stage, the liquid blocking region 216 can effectively prevent the liquid from leaking out. In this embodiment, as Figure 1 shown. For example, a hydrophobic region 215 is arranged on the side of the second electrode 212 close to the second conductive region 214, and a liquid blocking region 216 is arranged below the first conductive region 213.

[0032] For the hydrophobic region 215 and the liquid-blocking region 216, they can be selectively disposed on the second electrode 212 side or the hydrophobic region 215 can be disposed on both the first electrode 211 and the second electrode 212 sides according to whether the specific conductive fiber density of the actual first conductive region 213 and the second conductive region 214 is sufficient to carry or buffer the diffused liquid and the liquid entry mode. The liquid-blocking region 216 can be selectively disposed at the lower part of the first conductive region 213 or at the lower parts of both the first conductive region 213 and the second conductive region 214. In this embodiment, the hydrophobic region 215 is disposed on the side of the second electrode 212 close to the second conductive region 214, and the liquid-blocking region 216 is disposed at the lower part of the first conductive region 213.

[0033] In addition, in a specific absorbent article application, a corresponding safety component can also be provided for the power generation structure 210 in this embodiment. The safety component can include a safety circuit electrically connected to the electrode, or can also include a material layer structure for isolating current above the power generation structure 210, thereby improving safety. According to the deployment of different power generation structures 210 positions, a water-absorbing core can also be selectively configured, and the position of the water-absorbing core can be set according to actual needs, and can be disposed below the power generation structure 210 or on the same layer as the power generation structure 210, etc.

[0034] Embodiment 2

[0035] This embodiment discloses an absorbent core 200, which includes at least one of the foregoing power generation structures 210. As Figure 2 、 3 shown, in this embodiment, it includes two power generation structures 210, and the two power generation structures 210 are symmetrically disposed; it further includes a surface layer 230, the surface layer 230 is located above the power generation structure 210, and longitudinal diversion channels 231 are provided on the surface layer 230; the longitudinal diversion channels 231 divert liquid to the power generation structure 210. In this embodiment, the first electrode 211 of the power generation structure 210 is disposed beside the path direction of the longitudinal diversion channels 231, and the longitudinal diversion channels 231 divert liquid to the side of the first electrode 211 of the power generation structure 210. When the liquid falls on the surface layer 230, the liquid can be quickly conducted vertically along the longitudinal diversion channels 231 to the area where the power generation structure 210 is located. A water conduction gap 220 is left between the first electrodes 211 of the two power generation structures 210, and the water conduction gap 220 is opposite to the lower end of the longitudinal diversion channels 231; the liquid enters the water conduction gap 220 through the longitudinal diversion channels 231, and then enters the first conductive region 213 and reaches the second conductive region 214 through the first conductive region 213.

[0036] In this embodiment, the hydrophobic region 215 is disposed on the side of the second electrode 212 close to the second conductive region 214; the liquid-blocking region 216 is disposed at the lower part of the first conductive region 213.

[0037] In this embodiment, a surface protrusion structure 232 is provided on the surface of the surface layer 230 structure. The surface protrusion structure 232 can be composed of superhydrophobic ultrafine fibers, which will not be wetted by liquids and can maintain a dry state. In addition, the ultrafine fibers can provide good skin-friendly properties, improve wearing comfort, and enhance the user experience.

[0038] Example 3

[0039] As Figure 4 、 5 As shown, this embodiment discloses an absorbent article 100, which includes the aforementioned power generation structure 210 or the aforementioned absorbent core 200. The absorbent article 100 includes a diaper. That is, through the configuration of the power generation structure 210 or the configuration of the absorbent core 200, the problems existing in the absorbent article 100 in the prior art, such as the limited service life of the external power supply battery and the discomfort and inconvenience brought by the external power supply structure, can be effectively solved, and the comfort and safety of the absorbent article 100 can be improved.

[0040] The absorbent article 100 of this embodiment includes the absorbent article 100 main body and the aforementioned absorbent core 200; the absorbent article 100 main body includes a front waist portion 110, a rear waist portion 120, and a crotch portion 130, and the absorbent core 200 is disposed in the crotch portion 130 of the absorbent article 100 main body.

[0041] The crotch portion 130 of the absorbent article 100 includes a lining 140 on the skin-friendly side and an outer layer 150 on the outer side, and the absorbent core 200 is disposed between the lining 140 and the outer layer 150; or, the absorbent core 200 is disposed on the skin-friendly side, and the surface layer 230 structure of the absorbent core 200 forms the lining 140 of the crotch portion 130 of the absorbent article 100.

[0042] The absorbent article 100 of this embodiment, based on the aforementioned power generation structure 210, can use the evaporation process of urine to power the intelligent absorbent article 100 while ensuring the original comfort of the absorbent article 100. Compared with the intelligent absorbent article 100 powered by a traditional battery, this application does not require the configuration of an external battery. The absorbent article 100 can generate electricity by itself using the evaporation of urine, which is energy-saving and environmentally friendly, and at the same time avoids the impact on safety and comfort caused by the external battery. The absorbent article 100 can include a unit for detecting urine components, and the power generation structure 210 can supply power to the unit for detecting urine components. The power generation structure 210 starts generating electricity only after contacting urine to ensure that the unit for detecting urine components is in a dormant state or shut down state before that, thereby improving the service life and accuracy of the unit.

[0043] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the technical solutions of the present utility model, rather than limitations on the specific implementation manners of the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the claims of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. A power generation structure suitable for use in an absorbent article, characterized in that: The invention comprises a first electrode, a second electrode, a first conductive area and a second conductive area. The first conductive area and the second conductive area are arranged between the first electrode and the second electrode, and the second conductive area is arranged close to the second electrode. The evaporation rate of liquid in the first conductive area is lower than the evaporation rate of liquid in the second conductive area.

2. The power generation structure according to claim 1, characterized in that: The first conductive area and the second conductive area are formed by oriented conductive fibers, and the conductive fibers in the second conductive area are arranged at a density greater than that in the first conductive area.

3. The power generation structure according to claim 2, characterized in that: The conductive fiber is a fiber treated with conductive carbon black.

4. The power generation structure according to any one of claims 1 to 3, characterized in that: A hydrophobic region is disposed on a side of the second electrode close to the second conductive region; and / or a hydrophobic region is disposed on a side of the first electrode close to the first conductive region.

5. The power generation structure according to any one of claims 1 to 3, characterized in that: A liquid blocking area is arranged below the first conductive area and / or the second conductive area.

6. An absorbent core, characterized in that: Comprising at least one power generation structure according to any one of claims 1 to 5.

7. The absorbent core according to claim 6, characterized in that: It also includes a surface layer, which is located above the power generation structure and has a longitudinal guide channel on the surface layer; the longitudinal guide channel guides the liquid to the power generation structure.

8. The absorbent core according to claim 7, characterized in that: It comprises two power generation structures, and the two power generation structures are symmetrically arranged; a water-conducting gap is left between the first electrodes of the two power generation structures, and the water-conducting gap is opposite to the lower end of the longitudinal guide channel.

9. The absorbent core according to any one of claims 7 to 8, characterized in that: The surface of the surface layer is provided with a surface protrusion structure.

10. An absorbent article, characterized in that: It comprises the power generation structure according to any one of claims 1 to 5 or the absorption core according to any one of claims 6 to 9.

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