JP2019063230A - device - Google Patents

Abstract

To provide a device which is capable of operating continuously for a fixed period and has a compact size and a light weight as a wearable device which can be mounted to a human body.SOLUTION: A device 100 to be mounted directly to a human body comprises: a function element 30 being in contact with the skin; a driving circuit unit 20 which causes the function element to operate; and a sheet-like air battery 10 as a battery. The driving circuit unit and the air battery are laminated such that an exterior body 6 on an anode 1 side of the air battery is positioned on a surface of the device, the surface being opposite to a side on which the function element is disposed.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to a wearable device that is directly worn on a human body for the purpose of acquiring data used for medical applications, and more particularly to a device using an air battery as an operation power source.

  In recent years, patch-type medical biological information acquisition devices capable of acquiring biological information such as body temperature and heart rate by being directly attached to the surface of the skin are beginning to spread.

  Such a device acquires a sensor electrode, which is a functional element capable of acquiring biological information by touching the skin on the surface of a resin base material, and information from the sensor electrode. A drive circuit unit including a transmission device for transmitting information acquired to the device and a battery serving as an operation power source of the drive circuit unit are disposed, and an adhesive layer is formed on a portion facing the skin other than the sensor electrode portion. It is a wearable medical device that is configured as a patch that can be stuck on the skin and used directly on the body.

  For example, in Patent Document 1, an electrochemical cell as a power supply in which an anode and a cathode are formed by printing, and an electric circuit including a sensor having flexibility, have two adhesive layers formed on the surface. A thermal measurement patch is disclosed which is disposed between a resinous substrate layer and is capable of data communication with a smartphone.

  Further, Patent Document 2 discloses a reusable sensor device having a sensor, a processor, an application, a transmitter, and the like as a biological measurement patch capable of measuring a user's heart rate and respiration, the movement of the body, and the like with various sensors. It is disclosed that a battery exemplified as a zinc-air battery is accommodated in a disposable patch device in which a plurality of layers including a bubble layer and an adhesive layer are stacked.

  Patent Document 3 relates to a medical plaster-type measurement module in which an electronic component including a sensor and a semiconductor device and a coin-type air battery as an operation power supply of the electronic component are mounted on a resin substrate. When the protective sheet covering the adhesive layer for adhering the human body to the human body doubles as the seal member which covers the positive electrode side of the air battery housing part, the protective sheet is peeled off to attach the measurement module to the human body. It is disclosed that air comes in contact and begins to supply power.

Japanese Patent Publication No. 2016-505808 gazette Japanese Patent Publication No. 2016-515022 gazette Unexamined-Japanese-Patent No. 2017-370

  Wearable devices such as medical patches are required to be small and lightweight because they are used by being attached to the skin of the human body. On the other hand, for example, in the case of measuring a heart rate or measuring a change in respiration rate during a sleeping period, it is required to operate continuously for a long time.

  For this reason, in particular, the battery serving as the operation power supply of the device has a small size and light weight, with a capacity sufficient to withstand continuous use for a long time, on the premise that the battery has flexibility enough to be used as a patch. It is required to realize up to In addition, it is also necessary to devise the arrangement configuration of the entire device.

  An object of the present disclosure is to solve the above-described conventional problems, and to provide a small-sized, lightweight device capable of operating continuously for a certain period of time as a wearable device worn on a human body.

  In order to solve the above problems, the device disclosed in the present application is a device that is directly worn on the body, and includes a functional element that contacts the skin, a drive circuit unit that operates the functional element, and sheet-like air as a power supply. A battery, and the drive circuit portion and the air battery are disposed on the surface of the positive battery of the air battery on the surface of the device opposite to the side where the functional element is disposed. It is characterized in that it is stacked.

  In the device disclosed in the present application, a drive circuit unit that operates using a functional element in contact with the skin of a human body, and a sheet-like air battery that is an operation power supply of the drive circuit unit Are stacked on the front side of the device. Therefore, the area of the sheet-like air battery can be made substantially the same as the area of the entire device, and the capacity of the air battery can be increased, and at the same time the air that is the positive electrode active material of the air battery can be easily taken in The configuration can be realized.

FIG. 2 is a cross-sectional view illustrating the configuration of the device according to the first embodiment. It is a top view explaining the composition of the device concerning a 1st embodiment. It is a cross-sectional block diagram explaining the structure of the device concerning 2nd Embodiment.

  A device according to the present disclosure is a device that is worn directly on the body, and includes a functional element that contacts the skin, a drive circuit unit that operates the functional element, and a sheet-like air battery as a power source. The drive circuit unit and the air battery are stacked such that the positive electrode side exterior body of the air battery is located on the surface of the device opposite to the side on which the functional element is disposed.

  The device according to the present disclosure is directly mounted on the body of a user as a medical measurement device or a dosing device, or as a wearable device for acquiring various types of physical information of the patient by providing the above configuration. It is possible to reduce the size and weight as much as possible. In particular, since the sheet-like air battery serving as the operation power supply of the device is stacked on the drive circuit portion of the device, the area of the device and the area of the sheet battery can be made substantially the same. Capacity expansion can be realized. Furthermore, the positive electrode of the sheet-like air battery is positioned on the surface opposite to the side on which the functional element of the device is disposed, whereby the positive electrode of the air battery can be activated while the device is attached. It is possible to realize a device with a simple configuration that can easily take in air that is a substance.

  In the device of the present disclosure, it is preferable that the functional element and the drive circuit unit be stacked. By doing this, in particular, in the case of a thin functional element, the arrangement position of the functional element does not affect the shape of the drive circuit portion, and the miniaturization of the entire device can be realized.

  The functional element may be a sensor that contacts the skin and measures the state of the human body. The present invention is suitable as an application of the device disclosed in the present application that can be reduced in size and weight and can be operated continuously as required.

  Further, it is preferable that the drive circuit unit be provided with communication means for controlling the operation of the functional element from the outside. By doing this, the configuration of the drive circuit portion can be simplified, and further miniaturization of the entire device can be realized.

  Furthermore, it is preferable that an adhesive layer be formed on a portion of the surface of the device in contact with the skin other than the portion where the functional element is disposed. In this way, a patch-type or plaster-type device can be obtained that can be easily attached to the skin by the adhesive of the adhesive layer.

  Hereinafter, a device according to the present disclosure will be described with reference to the drawings.

  The drawings for describing the structure of the device used in the description of the present embodiment are intended to facilitate understanding of the shapes of the members constituting the device and the relationship between the positions thereof and are shown in the respective drawings. The size of the member does not necessarily reflect the actual size.

First Embodiment
FIG. 1 is a cross-sectional view for explaining the entire configuration of the device according to the present embodiment.

  FIG. 2 is a top view of the device according to the present embodiment.

  FIG. 1 shows a cross section of a portion indicated by A-A 'in FIG. Further, for convenience, the vertical direction in FIG. 1 will be described as the vertical direction of the device 100 shown in the present embodiment.

  The device 100 described in the present embodiment is, for example, a medical patch for detecting the temperature of the user, and is used by being directly attached to the skin.

  As shown in FIG. 1, the device 100 according to the present embodiment includes a sheet-like air battery 10, a drive circuit unit 20, a functional element 30 in contact with the skin of a user, and the functional element 30 side of the device 100. And an adhesive layer 40 formed on the surface of the substrate.

  The air battery 10 is formed in a sheet shape having flexibility as a whole by forming each member including the power generation element including the positive electrode 1 and the negative electrode 2 in a sheet shape. In the device according to the present embodiment, the exterior body 6 on the positive electrode 1 side of the air battery 10 is disposed on the upper surface opposite to the lower side on which the functional element 30 of the device 100 is disposed. By doing this, the air hole 7 formed in the exterior body 6 for supplying air, which is a positive electrode active material, to the positive electrode 1 is exposed to the outside in a state where the device 100 is worn by the user. For this reason, in addition to the fact that the outer shell member becomes unnecessary as compared with, for example, the case where the sheet-like air battery is disposed inside the outer shell member constituting the outer shell of the entire device, There is no need to form, in the shell member, an opening or the like that communicates with the outside of the device, and the entire device can be configured simply, reducing the size and weight of the device, and reducing the cost.

  Further, in the device 100 shown in the present embodiment, since the air battery 10 is stacked on the drive circuit unit 20, the ratio of the area of the air battery 10 to the area of the device 100 can be close to 100%. For this reason, compared with the case where the air battery 10 and the drive circuit unit 20 are arranged side by side, the area of the air battery 10 can be made larger when the area of the device 100 is the same, and the battery capacity can be increased. realizable. Moreover, if the area of the air battery 10 is the same, the area of the device 100 can be reduced.

  Furthermore, in the device 100 according to the present embodiment, a thin member such as a thin plate or a thin film such as a sensor plate for detecting the body temperature of the user, for example, is provided as the functional element 30 There is. As shown in FIG. 1, when the thin functional element 30 is provided, the functional element 30 can be stacked on the drive circuit unit 20.

  As described above, by stacking and arranging the functional element 30 with the drive circuit unit 20, the area of the drive circuit unit 20 can be increased as compared with the case where the drive circuit unit 20 and the functional element 30 described later are arranged side by side. Since the design area can be expanded to the entire area, the design margin at the arrangement position of various circuit components in the drive circuit unit 20 is expanded. For example, the resistance component can be reduced by shortening or thickening the connection wiring to further reduce consumption. The drive circuit unit 20 that operates with power can be realized. When the antenna element is provided, the area is increased to improve the antenna characteristics, or a circuit component having a relatively large area but a smaller thickness is selected, and so on. The thickness of the entire device 100 can be reduced.

  Further, since the functional element 30 is arranged to be stacked on the drive circuit unit 20, as shown in FIG. 2, the functional element 30, which is a sensor plate, is disposed substantially at the center of the device 100 in plan view. can do. By doing this, the adhesive layer 40 can be formed around the functional element 30, so the device 100 can be firmly attached to the skin by the adhesive of the adhesive layer 40, and the movement of the wearer Even when sweating or water gets on the mounting portion of the device 100, the functional element 30, which is a sensor plate, can be kept in close contact with the skin of the user.

  Hereinafter, the details of each member constituting the device 100 according to the present embodiment will be sequentially described. In addition, the following description is an illustration to the last, Comprising: Each structural member of the device concerning this embodiment is not limited to what was described in the following description.

[Air battery]
As the cross section is shown in FIG. 1, the sheet-like air battery 10 used in the device 100 according to the present embodiment has a positive electrode 1 and a negative electrode 2, and a positive electrode 1 and a negative electrode 2 each formed in a sheet shape. And an outer body 6 on the positive electrode 1 side, and an outer body on the negative electrode 2 side, in which the separator 3 and the electrolytic solution (not shown) are all sealed in a sheet shape. Sealed between 5 and is configured. Further, a water repellent film 4 which transmits air but does not transmit water (electrolyte solution) is disposed between the positive electrode 1 and the outer package 6 on the positive electrode 1 side, and the outer package 6 on the positive electrode 1 side is disposed. Air (oxygen) which is a positive electrode active material is supplied to the positive electrode 1 from the formed air hole 7 through the water repellent film 4.

(Positive electrode)
As the positive electrode 1, one having a catalyst layer, for example, one having a structure in which a catalyst layer and a current collector are laminated can be used.

  The catalyst layer can contain a catalyst, a binder, and the like.

The catalyst according to the catalyst layer, for example, silver, platinum group metals or alloys thereof, transition metals, platinum / metal oxide, such as Pt / IrO _2, perovskite oxides such as _{La 1-x Ca x CoO 3} , WC Such as carbides, nitrides such as Mn ₄ N, manganese oxides such as manganese dioxide, carbon [graphite, carbon black (acetylene black, ketjen black, channel black, furnace black, lamp black, thermal black etc.), charcoal, Activated carbon etc.] and the like, and one or more of them are used.

  In the catalyst layer, the content of heavy metals excluding components of the electrolytic solution is preferably 1% by mass or less. In the case of a positive electrode having a catalyst layer with a small content of heavy metal as described above, a battery having a small environmental load can be obtained even if it is discarded without special treatment. From this point as well, it is more preferable to use the above-mentioned carbon as a catalyst.

Further, from the viewpoint of enhancing the reactivity of the positive electrode, the specific surface area of carbon used as a catalyst is preferably 200 m ² / g or more, more preferably 300 m ² / g or more, and 500 m ² / g It is more preferable that it is more than. The specific surface area of carbon is a value determined by the BET method according to JIS K 6217, and can be measured, for example, using a specific surface area measurement device by a nitrogen adsorption method. The upper limit of the specific surface area of carbon is usually about 2000 m ² / g.

  The content of the catalyst in the catalyst layer is preferably 20 to 70% by mass.

  As a pinder related to the catalyst layer, PVDF, PTFE, copolymer of vinylidene fluoride or copolymer of tetrafluoroethylene [vinylidene fluoride-hexafluoropropylene copolymer (PVDF-HEP), vinylidene fluoride-chlorotriol Fluoroethylene copolymer (PVDF-CTFE), vinylidene fluoride-tetrafluoroethylene copolymer (PVDF-TFE), vinylidene fluoride-hexafluoropropylene-tetrafluoroethylene copolymer (PVDF-HEP-TFE), etc.] And the like. Among these, a polymer (PTFE) or copolymer of tetrafluoroethylene is preferable, and PTFE is more preferable. The content of pinda in the catalyst layer is preferably 3 to 50% by mass.

  In the case of a positive electrode having a catalyst layer, for example, it can be manufactured by mixing the catalyst, binder and the like with water, rolling it with a roll, and bringing it into close contact with the current collector. In addition, after the composition for forming a catalyst layer (slurry, paste, etc.) prepared by dispersing the above-mentioned catalyst, a binder used as needed, etc. in water or an organic solvent is applied to the surface of the current collector and dried. It can also be manufactured through a process of subjecting it to a press process such as calendering as required.

  The current collector of the positive electrode having the positive electrode mixture layer and the positive electrode having the catalyst layer includes, for example, a mesh of metal such as titanium, nickel, stainless steel, copper, foil, expanded metal, punching metal; mesh of carbon, porous Quality sheets; etc. can be used. The thickness of the current collector of the positive electrode is preferably 10 μm or more and 300 μm or less.

  Further, for the current collector of the positive electrode, it is also possible to use a resin film constituting a sheet-like outer package, or a part of a laminate of a resin film and a metal film. In this case, for example, a carbon paste is applied to the surface of the resin film or the laminate, which is to be the inner surface of the sheet-like outer package, to form a current collector, or the metal layer of the laminate is collected. A positive electrode can be obtained by forming the positive electrode mixture layer and the catalyst layer on the surface by the same method as described above. The thickness of the carbon paste layer is preferably 30 to 300 μm.

(Negative electrode)
The negative electrode 2 may be made of a zinc-based material, a magnesium-based material (a magnesium material and a magnesium alloy material are collectively referred to as such), an aluminum-based material (aluminium material and an aluminum alloy material are collectively referred to as such), etc. Those containing metallic materials are used. In such a negative electrode, a metal such as zinc, magnesium or aluminum acts as an active material.

  Specific examples of the negative electrode containing the metal material include zinc-based particles (zinc particles and zinc alloy particles are collectively referred to as such) and magnesium-based particles (magnesium particles and magnesium alloy particles are collectively referred to as such) And negative electrodes containing aluminum-based particles (all together referred to as aluminum particles and aluminum alloy particles).

  As an alloy component of zinc alloy particles, for example, indium (for example, content is 0.005 to 0.05% on a mass basis), bismuth (for example, content is 0.005 to 0.05% on a mass basis), aluminum (For example, the content is 0.001 to 0.15% by mass) and the like.

  Moreover, as an alloy component of magnesium alloy particles, for example, calcium (for example, content is 1 to 3% by mass), manganese (for example, content is 0.1 to 0.5% by mass), zinc (for example, The content is 0.4 to 1% on a mass basis, aluminum (for example, the content is 8 to 10% on a mass basis), and the like.

  Furthermore, as an alloy component of aluminum alloy particles, for example, zinc (for example, content is 0.5 to 10% by mass), tin (for example, content is 0.04 to 1.0% by mass), gallium (Eg, content is 0.003 to 1.0% by mass), silicon (eg, content is 0.05% or less by mass), iron (eg, content is 0.1% or less by mass), Magnesium (for example, content is 0.1 to 2.05% by mass), manganese (for example, content is 0.01 to 0.5% by mass) and the like.

  In the case of a negative electrode containing metal particles, the metal particles may be used alone or in combination of two or more.

  In addition, in consideration of reduction of environmental load at the time of battery disposal, it is preferable that the metal material used for the negative electrode has a low content of mercury, cadmium, lead and chromium, and the specific content is based on mass Mercury: 0.1% or less, cadmium: 0.01% or less, lead: 0.1% or less, and chromium: 0.1% or less are more preferable.

  The particle size of the zinc-based particles is, for example, preferably 50% by mass or less, more preferably 30% by mass or less, and 100% to 100% by mass of particles having a particle size of 75 μm or less in all the particles. What has a ratio of particles of 200 μm of 50% by mass or more, more preferably 90% by mass or more.

  The particle size of the magnesium-based particles and the aluminum-based particles is, for example, preferably 50% by mass or less, more preferably 30% by mass or less, of all particles having a particle size of 30 μm or less. The ratio of particles having a particle diameter of 50 to 200 μm is 50% by mass or more, more preferably 90% by mass or more.

The particle size of the metal particles in the above description is determined by dispersing these particles in a medium in which the particles are not dissolved using a laser scattering particle size distribution analyzer and measuring the particle diameter at a cumulative frequency of 50% on a volume basis (D ₅₀ ).

  In the case of a negative electrode containing metal particles, it may contain a gelling agent (sodium polyacrylate, carboxymethyl cellulose, etc.) and a binder, which are added if necessary, and the negative electrode is constituted by adding an electrolytic solution thereto An agent (such as a gelled negative electrode) can be used. For example, the amount of the gelling agent in the negative electrode is preferably 0.5 to 1.5% by mass, and the amount of the binder is preferably 0.5 to 3% by mass.

  As the electrolyte for the negative electrode containing the metal particles, the same one as that to be injected into the battery can be used.

  The content of the metal particles in the negative electrode is, for example, preferably 60% by mass or more, more preferably 65% by mass or more, and preferably 95% by mass or less, and 90% by mass or less Is more preferred.

  The negative electrode containing metal particles preferably contains an indium compound such as indium oxide or indium hydroxide. The inclusion of the indium compound in the negative electrode can more effectively prevent the generation of hydrogen gas due to the corrosion reaction between the metal particles and the electrolytic solution.

  The amount of the indium compound used in the negative electrode is preferably 0.03 to 1 with respect to metal particles: 100 in mass ratio.

  The negative electrode may be a metal such as a zinc-based sheet (such as zinc foil or zinc alloy foil) having the same composition as the zinc-based particles or a magnesium-based sheet (such as magnesium foil or magnesium alloy foil) having the same composition as the magnesium-based particles. A sheet can also be used. In the case of such a negative electrode, its thickness is preferably 10 to 500 μm.

  Moreover, you may use a collector for the negative electrode containing a metal material as needed. The current collector of the negative electrode containing the metal material may, for example, be a mesh of metal such as nickel, copper or stainless steel, a foil, an expanded metal, a punching metal, a sheet of carbon, a mesh, or the like. The thickness of the current collector of the negative electrode is preferably 10 μm or more and 300 μm or less.

  As in the case of the positive electrode, in the current collector of the negative electrode, a carbon base is applied to a surface to be an inner surface of the sheet-like outer package, or a metal layer constituting the sheet-like outer package is used. It can be used. The thickness of the carbon base layer is preferably 50 to 200 μm.

(Separator)
Examples of the separator 3 include separators generally employed in various batteries, such as resin-made porous membranes (microporous membranes, nonwoven fabrics, etc.) and semipermeable membranes represented by cellophane films. From the viewpoint of preventing the short circuit of the sheet-like battery and improving the load characteristics, it is preferable to use a semipermeable membrane for the separator.

  As resin which comprises the separator which consists of resin-made porous films, polyolefins, such as polyethylene (PE), a polypropylene (PP), an ethylene-propylene copolymer, etc. are mentioned, for example.

  In the case of a resin separator, the porosity is preferably 30 to 80%, and the thickness is preferably 10 to 100 μm.

  Moreover, when using semipermeable membrane, such as a cellophane film, for a separator, you may comprise a separator only with a semipermeable membrane. However, since the semipermeable membrane has low strength, problems such as breakage at the time of battery assembly are likely to occur. Therefore, it is also recommended to constitute a separator with a laminate in which a graft film composed of a specific polymer and a semipermeable membrane are laminated.

  The graft polymer constituting the graft film has, for example, a form in which (meth) acrylic acid or a derivative thereof is graft-polymerized to polyolefin (polyethylene, polypropylene or the like) which is a trunk polymer. However, the graft polymer may have the above-mentioned form, and may not be produced by a method of graft polymerizing (meth) acrylic acid or a derivative thereof to polyolefin.

The (meth) acrylic acid or the derivative thereof constituting the graft polymer is one represented by the following general formula (1). In the following general formula (1), R ¹ is H or CH ₃ , and R ² is a hydrophilic substituent such as H or NH ₄ , Na, K, Rb, or Cs.

  In the above-mentioned graft film and cellophane film, the polymer itself constituting these films has a function of absorbing the electrolyte and transmitting ions.

The graft polymer constituting the graft film preferably has a graft ratio of 160% or more as defined by the following formula (2). Since there is a correlation between the graft ratio of the graft polymer and the electrical resistance of the graft film, the electrical resistance of the graft film is 20 to 120 mΩ · in ² by using the graft polymer having the graft ratio as described above. It can be controlled to be a suitable value of The electrical resistance of the graft film is a value obtained by an alternating current voltage drop method (1 kHz). Set the ambient temperature to 20 to 25 degrees, immerse the film in an aqueous solution of 25 plus or minus 1 degree of 40% KOH (specific gravity: 1.400 plus or minus 0.005), take out after 5 to 15 hours, and measure the electrical resistance do it.

Graft ratio (%) = 100 × (A−B) / B (2)
In a formula (2), A: Mass (g) of a graft polymer, B: Mass (g) of a trunk polymer in a graft polymer.

  In addition, "B (mass of the trunk polymer in a graft polymer)" of said Formula (2) graft-polymerizes a (meth) acrylic acid and its derivative (s) to polyolefin which is a trunk polymer, for example, graft polymer. When forming by a method, the mass of the trunk polymer used for this graft polymerization may be measured in advance. In the graft polymer, the graft ratio may exceed 100% when the monomers [(meth) acrylic acid and derivatives thereof] used for graft polymerization are polymerized to form long-chain graft molecules. Because there is It is preferable that the upper limit of the graft ratio of the graft polymer defined by said Formula (2) is 400%. The above "(meth) acrylic acid" is a combination of acrylic acid and methacrylic acid.

  In the case of a separator composed only of a cellophane film, its thickness is, for example, preferably 15 μm or more, preferably 40 μm or less, and more preferably 30 μm or less.

  Furthermore, in the case of a separator composed of a laminate of a graft film and a cellophane film, the total thickness of the graft film and the cellophane film is, for example, preferably 30 μm or more, and more preferably 40 μm or more. And 70 μm or less, and more preferably 60 μm or less.

  Furthermore, in the case of a separator comprising a laminate of a graft film and a cellophane film, the thickness of the graft film is, for example, preferably 15 μm or more, more preferably 25 μm or more, and 30 μm or less. Is preferred.

  As a laminate of a graft film and a cellophane film for constituting a separator, for example, those marketed under the name of “YG9132”, “YG9122” or “YG2152” from Yuasa Membrane System Co., Ltd. can be mentioned.

  In addition, a separator may be configured by combining a cellophane film, a cellophane film and a graft film, and a liquid absorbing layer (electrolyte solution holding layer) such as vinylon-rayon mixed paper. It is preferable that the thickness of such a liquid absorption layer is 20-500 micrometers.

(Exterior body)
As a resin film which comprises sheet-like exterior body 5 and 6, nylon film (nylon 66 film etc.), polyester film [polyethylene terephthalate (PET) film etc.], etc. are mentioned. The thickness of the resin film is preferably 20 to 100 μm.

  Sealing of the sheet-like outer package 5 or 6 is generally performed by heat fusion between the end of the sheet-like outer package 6 on the positive electrode 1 side and the end of the outer package 5 on the negative electrode 2 side. For the purpose of facilitating the heat fusion, a heat fusion resin layer may be laminated on a resin film and used as the sheet-like exterior body 5 or 6. Examples of the heat sealing resin constituting the heat sealing resin layer include modified polyolefin films (modified polyolefin ionomer film and the like), polypropylene and copolymers thereof. The thickness of the heat sealing resin layer is preferably 20 to 100 μm.

  In addition, a metal layer may be laminated on the resin film. The metal layer can be made of an aluminum film (aluminum foil, including an aluminum alloy foil), a stainless steel film (stainless steel foil), or the like. The thickness of the metal layer is preferably 10 to 150 μm.

  Moreover, the film of the structure by which the said heat-fusion resin layer and said metal layer were laminated | stacked may be sufficient as the resin film which comprises sheet-like exterior body 5 and 6. FIG.

  The shape of the sheet-like exterior body is rectangular in plan view in accordance with the shape of the device 100 shown in FIG. However, the plan view shape of the sheet-like exterior body 5 or 6 used for the device 100 described in the present embodiment is not limited to a quadrangle, and may be a triangle, a pentagon, a hexagon, a heptagon, or eight according to the shape of the device 100. It may be a polygon such as a square, a circle or an ellipse. Also, including the case of the bandage type device 100, the whole is formed in a substantially square shape, and the device 100 is attached to the skin, such as one in which each corner is formed round or one in which both longitudinal end portions are semicircular. The shape can be made easy for the wearer to hold at the time of handling such as at the time of doing.

  As shown in FIGS. 1 and 2, in the air battery 10 used in the device 100 according to the present embodiment, an air hole 7 is formed in a portion overlapping the positive electrode 1 of the exterior body 6 on the positive electrode 1 side.

  Air outside the device 100 is taken in through the air holes 7, and oxygen in the air functions as a positive electrode active material to supply power. The air hole 7 is, for example, a circular opening having a diameter of about 50 μm to about 1 mm, and is formed on the exterior body 6 on the positive electrode 1 side by a laser irradiation method or a mechanical punching method.

  Although FIG. 2 shows an example in which nine air holes 7 are formed in a matrix shape, three each in the vertical direction and the horizontal direction as the air holes 7, the number and arrangement of the air holes 7 are shown. There is no restriction on the shape, and it is preferable to arrange in a form in which it is dispersed as evenly as possible when viewed in plan as long as oxygen can be supplied in an amount required for the positive electrode 1. Further, the shape of the air hole 7 is not limited to the illustrated circular one, and may be rectangular, oval or the like.

  In the air battery 10 described in the present embodiment, two electrode terminals 9 are provided on the inner surface near one side of the exterior body 6 on the positive electrode 1 side, that is, on the surface facing the exterior body 5 on the negative electrode 2 side. Is formed.

  The electrode terminal 9 is made of a conductive material such as a metal thin film or carbon paste formed by vapor deposition or printing, and one of the upper electrodes in FIG. 2 is connected to the positive electrode 1 by a lead wire 8 or the like. Although not shown, the other electrode terminal 9 is electrically connected to the negative electrode 2. As shown in FIG. 1 and FIG. 2, a part of the electrode terminal 9 is under the air battery 10 by sealing so that the end of the exterior body 5 on the negative electrode 2 side is located at the approximately middle portion of the electrode terminal 9. The electrode terminal 9 can be exposed to the side surface, and can be brought into contact with the power supply terminal 21 of the drive circuit unit 20 disposed below the air battery 10. Furthermore, in the case 6 on the positive electrode 1 side, the electrode terminal 9 is exposed to the lower side of the air battery 10 by providing an opening in the case 5 on the negative electrode 2 side facing the portion where the electrode terminal 9 is formed. It can also be configured to Thus, in the state where the air battery 10 is stacked on the drive circuit 20, drive power can be supplied from the air battery 10 to the drive circuit unit 20.

  In addition to the method of forming the electrode terminal of the air battery 10 on the inner side surface of the exterior body 6 on the positive electrode 1 side as shown in the drawing, the electrode terminal of the air cell 10 should have a via structure to penetrate the exterior body 5 on the negative electrode 2 side. Also, the power supply terminal of the drive circuit unit disposed below the air battery 10 can be brought into contact. Alternatively, an electrode terminal may be formed so as to extend outward from the side of the air battery 10, and the power supply terminal of the drive circuit unit may be connected to the electrode terminal. In this case, it is necessary to minimize the amount of extension of the device 100 by minimizing the amount of extension of the electrode terminal from the side of the air battery 10.

  In the above embodiment, the two electrode terminals 9 of the air battery 10 are arranged side by side in the vicinity of one side of the air battery 10. However, separating the positions where the two electrode terminals 9 of the air battery 10 are formed For example, the second electrode terminal 9 may be disposed in the vicinity of the left side in FIGS. 1 and 2.

(Water repellent film)
A water repellent film 4 is disposed between the positive electrode 1 of the sheet-like air battery 10 and the exterior body 6 on the positive electrode 1 side. As the water repellent film, a film having water repellency and capable of transmitting air is used. As a specific example of such a water repellent film, a film made of a fluorine resin such as PTFE; a polyolefin such as polypropylene, polyethylene or the like; or the like can be mentioned. The thickness of the water repellent film can be 50 to 250 μm.

  In addition, an air diffusion film for supplying the air taken into the exterior body 6 to the positive electrode may be disposed between the exterior body 6 on the side of the positive electrode 1 and the water contact film 4. A non-woven fabric made of a resin such as cellulose, polyvinyl alcohol, polypropylene or nylon can be used for the air diffusion membrane. The thickness of the air diffusion film can be 100 to 250 μm.

(Electrolyte solution)
The electrolyte salt of the electrolytic solution contained in the two sheet-like outer packages 5 and 6 is not particularly limited. However, a strong acid selected from hydrochloric acid, sulfuric acid and nitric acid, ammonia, aluminum hydroxide and hydroxide A salt with a weak base typified by a hydroxide of a metal element such as magnesium is preferably used, and an ammonium salt or a salt of a specific metal element is more preferably used.

More _{^{specifically, Cl -, SO 4 2-,}} HSO 4 -, and, NO ₃ ^- and at least one ion selected from, Al ion, Mg ion, at least selected from Fe ions and ammonium ions Ammonium salts such as ammonium sulfate, ammonium hydrogensulfate [(NH ₄ ) HSO ₄ ], ammonium chloride, ammonium nitrate; salts with one kind of ion; aluminum salts such as aluminum sulfate, aluminum chloride, aluminum nitrate; magnesium sulfate, chloride Magnesium, magnesium chloride such as magnesium hydroxide [MgCl (OH)], magnesium nitrate and the like; iron (II) sulfate, ammonium iron (II) sulfate [(NH ₄ ) ₂ Fe (SO ₄ ) ₂ ], iron (III) sulfate And iron salts such as iron (II) chloride and iron (II) nitrate;

  Thus, an aqueous solution containing a salt of a strong acid and a weak base has a relatively small action of corroding a metal material which is a negative electrode active material, and has a relatively high conductivity. Therefore, good discharge characteristics can be realized.

  By setting the pH of the electrolytic solution to 3 or more and less than 12, it is possible to realize an air battery with improved safety, small environmental load, and good discharge characteristics. The pH of the electrolytic solution is 3 or more, preferably 5 or more, and less than 12, preferably 10 or less, more preferably less than 7. By using the above-mentioned electrolyte salt, not only it becomes easy to adjust the pH of the electrolytic solution to the above-mentioned range, but it is possible to constitute an electrolytic solution having a relatively low irritation to the skin. Even if the electrolyte is leaked and adheres to the skin of the recipient of the device, the possibility of problems is low, and a battery suitable as a power source of the device to be directly worn on the body can be obtained.

The aqueous solution used as the electrolyte comprises at least one ion selected from Cl ⁻ , SO ₄ ^2- , HSO ₄ ⁻ , and NO ₃ ⁻ as an electrolyte, and Al ion, Mg ion, Fe ion and ammonium ion It is sufficient to contain only one of the salts with at least one ion selected from the above, but it may contain two or more.

However, since the salt of Cl ⁻ ion and Fe ³⁺ ion [iron chloride (III)] has a stronger action of corroding the metal material as the negative electrode active material than the salt by the combination of other ions, iron chloride It is preferable to use a salt other than (III), and it is more preferable to use an ammonium salt because the effect of corroding the metal material which is the negative electrode active material is lower.

  Even with the salts of strong acids and weak bases as described above, perchlorate causes a danger of combustion and explosion due to heating and impact, so from the viewpoint of environmental impact and safety during disposal, electrolyte solution Preferably, it is not contained in the aqueous solution to be used, or the amount of perchlorate ions is small (specifically, less than 100 ppm, more preferably less than 10 ppm).

  In addition, among the salts of strong acids and weak bases, heavy metal salts (except iron salts) represented by zinc chloride and copper sulfate, etc., are often harmful, so they have safety in environmental impact and disposal. From the viewpoint of the above, the aqueous solution used as an electrolytic solution is not contained, or even if contained, the amount of heavy metal ion excluding iron ion is small (specifically less than 100 ppm, more preferably less than 10 ppm) preferable.

  The conductivity of the electrolytic solution is preferably 80 mS / cm or more. Therefore, the concentration of the electrolyte (in the case of using only one type, the concentration thereof when using only one type, and the total concentration of those types in the case of using two or more types) secures such conductivity in the aqueous solution used as the electrolytic solution The concentration is preferably 5 to 50% by mass. The upper limit of the conductivity of the electrolytic solution is usually about 700 mS / cm.

  It is preferable that the indium compound is dissolved in the electrolytic solution. When the indium compound is dissolved in the electrolytic solution, the generation of hydrogen gas in the battery can be better suppressed.

  The indium compound to be dissolved in the electrolytic solution includes indium hydroxide, indium oxide, indium sulfate, indium sulfide, indium nitrate, indium bromide, indium chloride and the like.

  The concentration of the indium compound in the electrolytic solution is preferably 0.005% or more, more preferably 0.01% or more, and particularly preferably 0.05% or more on a mass basis. Further, it is preferably 1% or less, more preferably 0.5% or less, and particularly preferably 0.1% or less.

  In addition to the components described above, various known additives may be added to the electrolytic solution as required. For example, zinc oxide may be added to prevent corrosion (oxidation) of the metal material used for the negative electrode. Zinc oxide can also be added to the negative electrode.

(Specifications of air battery)
The entire shape of the sheet-like air battery 10 composed of the above-described members can be, for example, 30 to 50 mm in the long side and 20 to 35 mm in the short side. The thickness of the air battery 10 is preferably thinner, for example, 1 mm or less. In addition, in consideration of the rigidity required for handling the air battery 10, the minimum value of the thickness can be 0.2 mm as an example.

  Next, four sheet-like air batteries as examples were actually created using four types of electrolyte solutions, and the discharge capacity was confirmed.

  In each sheet-like air battery, the following materials were used for the positive electrode, the negative electrode, the electrolytic solution, the separator, the water repellent film, and the outer package.

<Positive electrode>
DBP oil absorption 495cm ³ / 100g, carbon having a specific surface area of 1270 m ² / g (Ketjen Black EC600JD (trade name: manufactured by Lion Specialty Chemicals Inc.)): and 30 parts by weight, the acrylic dispersant and 15 parts by weight, 60 parts by mass of SBR and 500 parts by mass of water were mixed to prepare a composition for forming a catalyst layer.

The composition for forming a catalyst layer is dried after using a porous carbon sheet (thickness: 0.25 mm, porosity: 75%, air permeability (Gurley): 70 seconds / 100 ml) as a current collector. The substrate was stripe-coated on the surface of the base so that the coating amount was 10 mg / cm ² and dried to obtain a current collector having a portion in which the catalyst layer was formed and a portion in which the catalyst layer was not formed. This current collector is punched into a shape having a size of 15 mm × 15 mm of the catalyst layer, and a portion having a size of 5 mm × 15 mm without the catalyst layer formed at one end, and the overall thickness is A 0.27 mm positive electrode (air electrode) was produced.

<Negative electrode>
A zinc alloy foil (thickness: 0.05 mm) containing In: 0.05%, Bi: 0.04%, and Al: 0.001% as an additive element and having a size of 15 mm × 15 mm serving as an active material The negative electrode was manufactured by punching a shape having a 5 mm × 15 mm portion to be a lead at one end thereof.

<Electrolyte solution>
Battery 1 20% by mass ammonium sulfate aqueous solution (pH = 5.3)
Battery 2 20% by mass ammonium chloride aqueous solution (pH = 4.3)
Battery 3 20% by mass sodium chloride aqueous solution (pH = 7)
Battery 4 30 mass% potassium hydroxide aqueous solution (pH = 14).

<Separator>
Two graft films (thickness per sheet: 15 μm) composed of a graft copolymer having a structure in which acrylic acid is graft-copolymerized to a polyethylene main chain are disposed on both sides of a cellophane film (thickness: 20 μm) Used.

<Water-repellent film>
A PTFE sheet having a thickness of 200 μm was used.

<Exterior body>
Two 2.5 cm × 2.5 cm sized aluminum laminate films having a PET film on the outer surface of the aluminum foil and a polypropylene film on the inner surface as the heat-fusion resin layer were used.

<Assembly of battery>
In the laminate film which is the two outer packaging bodies described above, one of the laminate films disposed on the positive electrode side has nine air holes each having a diameter of 0.5 mm, corresponding to the arrangement position of the catalyst layer of the positive electrode. A matrix of 4.5 mm x 4.5 mm equidistantly spaced (center distance between air holes is 5 mm) was formed in a matrix, and a water-repellent film was thermally welded on the inner surface side using a hot melt resin. In addition, in the other laminate film disposed on the negative electrode side, in the portion where the positive electrode and the negative electrode lead are disposed, in order to enhance the sealing property of the heat-welded portion between the lead and the outer package, In parallel, a modified polyolefin ionomer film was attached.

  The positive electrode, the separator, and the negative electrode are sequentially laminated on the water-repellent film with the laminate film having the water repellent film down, and one more laminated film is further added to the lead of the positive electrode and the negative electrode. And the modified polyolefin ionomer film was positioned on top of the Next, the peripheral 3 sides of the two laminate films are heat-welded together to form a bag, the electrolyte is poured from the opening, and the opening is heat-welded and sealed to form a sheet-like air cell did. The thickness of the produced battery was approximately 1 mm.

  After leaving the air battery thus produced for 10 minutes in the atmosphere, the discharge capacity was measured when the battery was discharged to 0.5 V at a current corresponding to a 100 hour rate to the design capacity of the battery. The results are shown in Table 1.

  An air battery (battery 1 to 3) using an electrolytic solution having higher safety than an air battery (battery 4) using a high concentration alkaline electrolyte used as an electrolyte of a commercially available button type air battery In the above, sufficient discharge capacity could be obtained. In particular, in the batteries 1 and 2 in which salts of strong acid and weak base were used as electrolyte salts, excellent characteristics similar to those of the battery 4 having the same configuration as the electrolytic solution of a commercially available button type air battery were obtained.

  From the above results, the air battery described in the present embodiment is thin and has high ease of handling and safety, and is a relatively large-capacity air battery, which is suitable as a power source for devices worn directly on the body I understand that there is.

[Drive circuit section]
The drive circuit unit 20 includes, for example, a wire formed of a metal thin film such as copper on a film substrate, and one or a plurality of electronic circuits formed as thin film chips functioning as a memory, a processor, a transmitting / receiving circuit, etc. The present invention can be realized as a known thin film electronic circuit component such as an antenna element formed of a metal thin film used for communication of In addition, in order to avoid that a drawing becomes complicated, illustration of each component member in the drive circuit part 20 is abbreviate | omitted.

  The function of the drive circuit unit 20 is naturally designed to meet the purpose of the device 100. For example, when measuring the body temperature of the user, the temperature of the sensor plate which is the functional element 30 described later For example, while detecting by the change of the current value which flows through a sensor plate, etc., the numerical value of the measured body temperature is controlled by the control signal from external apparatuses, such as a smart phone which cooperates, or the logic circuit with which drive circuit unit 20 itself is provided According to the above, the antenna element transmits to the external device.

  Also, as described later, when the functional element is a unit that injects a drug solution to a person to be mounted, a predetermined time may be set by the timer function of the drive circuit unit 20 itself or according to an operation signal from an external device. In addition, control is performed such that a predetermined amount of drug solution is injected from the skin of the subject.

  A power supply terminal 21 for transmitting power from the air battery 10 to the drive circuit unit 20 is formed in a portion of the drive circuit unit 20 stacked in the arrangement position of the connection electrode 9 of the air battery 10. The electric power from the air battery 10 is supplied to the electronic circuit component by the wiring connecting the power supply terminal 21 and various thin film electronic circuit components.

[Functional element]
The functional element 30 in the device 100 according to the present embodiment is a thin film or thin plate sensor plate, which can detect biological information such as body temperature, pulse and respiratory rate by directly touching the skin of the user It is a member.

  The functional element 30 may be, for example, a metal foil, a resin film having a conductive member such as metal or carbon formed on the surface thereof, or the resin constituting the drive circuit portion 20 as long as the function of the device 100 is achieved. It can be realized in various forms such as a thin film formed on a surface different from the surface on which the air battery 10 of the substrate is laminated. Between the functional element 30 and the drive circuit portion 20, the protruding portion of at least a part of the electric circuit component constituting the drive circuit portion 20 is in direct contact, or the functional element 30 of the drive circuit portion 20 is disposed. It is connected via a conductive means such as a wire formed on the surface.

[Adhesive layer]
In the device according to the present embodiment, as shown in FIG. 1 and FIG. 2, the adhesive layer 40 is provided in the portion of the drive circuit unit 20 where the functional element 30 is not disposed.

  Since the adhesive layer 40 is in direct contact with the skin, the adhesive layer 40 is formed of an adhesive certified for medical use, for which it has been confirmed that no rash or the like occurs even when sticking for a certain period of time or more.

  The adhesion of the adhesive layer 40 is examined from both the dimensions of the device 100 such as size, thickness, and weight, and the mobility of the portion of the human body to which the device 100 is supposed to be attached. The choice of material, the location of the formation and its area are determined.

  As described above, the device 100 shown as the first embodiment is configured by laminating the functional element 30 in direct contact with the skin of the user, the drive circuit unit 20, and the sheet-like air battery 10. Therefore, the small area of the device 100 can be realized, and in particular, various physical data of the user can be acquired as a patch type or a plaster type medical device.

Second Embodiment
FIG. 3 shows the cross-sectional configuration of the second embodiment of the device disclosed in the present application.

  The device 200 of the second embodiment is characterized in that the thickness of the functional element 130 in direct contact with the skin is thicker compared to the functional element 30 of the device 100 of the first embodiment whose cross-sectional configuration is shown in FIG. It is different. In the device 200, as the sheet-like air battery 110, one having the same configuration as the air battery 10 of the device 100 according to the first embodiment whose cross section is shown in FIG. 1 can be used. In addition, although the arrangement position is different, the drive circuit unit 120 can also have the same configuration as the drive circuit unit 120 of the device 100 described as the first embodiment. Therefore, in the description of the device 200 according to the present embodiment, the detailed description of the air battery 110 and the drive circuit unit 120 and the description using the plan view of the device 200 will be omitted.

  For example, as a medical device for injecting a drug solution to a patient, one injecting a drug solution at a predetermined time interval or grasping the physical condition of the patient and immediately injecting a drug solution when it becomes necessary The thing to do etc. can be assumed. In the case of constructing such a medical device, at least a container portion for containing a drug solution and a pressure application portion for injecting the drug solution are required as the functional element 130, and therefore, it is shown as the first embodiment. The thickness is greater than that of the functional element 30 as a sensor plate as in the case of the above device.

  In such a case, if the functional element 130 and the drive circuit 120 are stacked, the thickness of the device 200 may be increased, which may make it difficult to attach to the skin, or may cause a strong discomfort to the wearer. There is a concern that it may cause Therefore, in the device 200 according to the second embodiment, the thickness of the device 200 is prevented from increasing as a configuration in which the functional element 130 and the drive circuit unit 120 are arranged side by side without being stacked. .

  As shown in FIG. 3, in the device 200, the sheet-like air battery 110 is stacked and arranged so as to cover the entire configuration in which the functional element 130 and the drive circuit unit 120 are lined up. Maintain a large battery capacity. Also, by arranging the positive electrode side exterior body of the air battery 110 on the side opposite to the side on which the drive circuit unit 120 and the functional element 130 are arranged, it is possible to easily obtain air as the positive electrode active material. It can be done.

  However, the configuration in which both the functional element 130 and the drive circuit unit 120 are covered with the air battery 110 is not an essential configuration in the device 200 according to the present embodiment, and the thickness of the functional element 130 is large. The functional element 130 and the stacked body of the drive circuit unit 120 and the air battery 110 can be arranged side by side. Also in this case, it is needless to say that the outer case on the positive electrode side of the air battery 110 is disposed on the surface side of the device when the user wears the device.

  An adhesive layer 140 is formed on the lower surface of the air battery 110 and the drive circuit unit 120 in the region where the functional element 130 is not disposed, and the device 200 is easily attached to the skin of the user It can be configured. The use of a medically approved adhesive as the adhesive layer 140 is similar to the device 100 of the first embodiment.

  As shown in FIG. 3, since the functional element 130 and the drive circuit section 120 are arranged sideways, the side opposite to the side where the drive circuit section 120 is arranged in the functional element 130 (left side in FIG. In the above, the space for forming the adhesive layer 140 is reduced, but as shown in FIG. 3, the adhesive layer 140 is formed on the lower surface of the air cell 110 and the end of one of the devices 200 (left side in the figure). The situation that the adhesive layer 140 is not formed is avoided.

  As described above, in the device 200 shown in the second embodiment, even when a member having a relatively large thickness is used as the functional element 130, the sheet-like air battery 110 and the drive circuit unit 120 are stacked, The area of the air battery 110 can be secured at a large ratio over the area of the entire device 200, and the device 200 provided with the air battery 110 with a relatively large capacity can be realized.

  As the relatively thick functional element, besides the unit for injecting the above-mentioned chemical solution, for example, a configuration provided with a two-dimensional or three-dimensional acceleration sensor can be considered, and the operation of the user can be detected. Things can be considered. Furthermore, as described above, it is also conceivable to combine the functions possessed by the thin plate-like sensor plate in the first embodiment with a thick functional element.

  As described above, the device described in the present embodiment is a device that is directly worn on the body, and includes a functional element in contact with the skin, a drive circuit unit, and an air battery as a power source. While being laminated with the circuit portion, the positive electrode side exterior body of the air battery is located on the surface side of the device which is a side different from the side where the functional element is disposed.

  For this reason, in the state where the user wears the device, the exterior body on the positive electrode side of the air battery is not covered with skin or the like, and the positive electrode active material can be stably supplied to the positive electrode.

  Furthermore, the area ratio of the air battery to the area of the device can be increased, and a small, lightweight device capable of long-time operation can be realized.

  In the description of the above embodiment, an example using a resin film in which a metal thin film such as aluminum foil is laminated as an exterior body of an air battery is shown. By doing this, it is possible to more reliably prevent the leakage of the electrolytic solution sealed in the inside of the outer package, but a laminate of a resin film and a metal thin film is disposed on the drive circuit section. In the case of the above-described configuration, the antenna element formed in the drive circuit portion may be shielded, and communication between the drive circuit portion and an external device may be interrupted.

  For this reason, the shape and arrangement of the exterior body and the leads are adjusted so that communication with the outside is not hindered so that metal components such as the metal thin film of the exterior body are not disposed on the antenna element of the drive circuit portion. Is preferred.

  For example, the antenna element portion of the drive circuit portion may be disposed apart from the other circuit portions, and provided at least in the portion other than the portion where the metal foil is formed of the exterior body of the air battery, or providing a notch in the exterior body. Thus, the radio wave can be prevented from being shielded by, for example, exposing the antenna element portion. Furthermore, when the communication means between the drive circuit unit and the external device is infrared communication, it is preferable that a part of the exterior body of the air battery be transparent to allow transmission of infrared light.

  In the above description of the embodiment, the example in which the adhesive layer is formed on the surface on which the functional element of the device is disposed has been described, but in the device disclosed in the present application, providing the adhesive layer is not essential. For example, the functional element can be worn in a state in which the functional element is in contact with the skin by a band member used in a wristwatch in which the functional element, the drive circuit portion, and the sheet-like air battery are stacked. Further, the device can be mounted in a state where the functional element is in contact with the skin of the user by means of a stretchable annular cloth member such as a supporter, a bandage, a tape for taping, or the like. However, in this case, the support should be provided with an opening, taking into consideration the position of the bandage or the tape so as not to close the air hole formed in the outer case on the positive electrode side of the air battery disposed on the upper surface of the device. It is necessary to take action.

  Moreover, although omitted in the above description, a protective sheet covering the air hole of the air battery in a state before operating the device, and a peeling sheet covering the surface of the adhesive layer are required. Known members can be suitably used as these protective sheets and release sheets.

  The device of the present disclosure has a simple and compact configuration because it has a configuration in which a drive circuit unit that operates a functional element in direct contact with the skin of the wearer and a sheet-like air battery that is an operation power supply are stacked. However, as a device that can operate for a relatively long time, it is particularly useful in the medical field.

1 positive electrode 2 negative electrode 6 exterior body (positive electrode side)
10 air battery 20 drive circuit unit 30 sensor plate (functional element)
40 Adhesive Layer 100 Device

Claims (5)

A device that is worn directly on the body,
A functional element that contacts the skin,
A drive circuit unit for operating the functional element;
It has a sheet-like air battery as a power supply,
The drive circuit unit and the air battery are stacked so that the positive electrode side exterior body of the air battery is positioned on the surface of the device opposite to the side on which the functional element is disposed. A device characterized by   The device according to claim 1, wherein the functional element and the drive circuit unit are stacked.   The device according to claim 1, wherein the functional element is a sensor that contacts a skin to measure a state of a human body.   The device according to any one of claims 1 to 3, wherein the drive circuit unit comprises communication means for controlling the operation of the functional element from the outside.   The device according to any one of claims 1 to 4, wherein an adhesive layer is formed on a portion of the surface of the device in contact with the skin other than the portion where the functional element is disposed.

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