Electric characteristic modifying material

Abstract

Preventing deterioration of a secondary battery and reducing electric resistance of a conductor such as metallic wiring in an electric apparatus or device.

Description

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to an electric characteristic modifying material which prevents deterioration of a secondary battery and reduces electric resistance of a conductive portion in metallic wiring and the like of electric appliances.

[0003] 2. Description of Related Art

[0004] Conventionally, various kinds of apparatus and devices are mostly electrical. Not only an industrial large machine which consumes a large amount of electricity but also portable telephone and the like which consume a small amount of electricity are not established if no electricity is used.

[0005] Not so few electric apparatuses and devices employ chemical batteries.

[0006] The chemical battery is largely classified into a primary battery and a secondary battery, both of which adopt the same method of converting chemical energy to electric energy. Oxidant is used as anode activating material while reducing agent is used as cathode activating material. The both electrodes are placed in ion conductor (electrolyte water solution or non-aqueous electrolyte) such that they oppose each other and an outside load is applied to the both electrodes. Consequently, electron accepting reaction (reducing reaction) occurs at the anode and electron emitting reaction (oxidation reaction) at the cathode, so that electrons move from the cathode to the anode through the outside load. Consequently, current flows from the anode to the cathode.

[0007] Because ion moves in the ion conductor, current flows.

[0008] Discharge phenomenon is generated by electric chemical reaction and active material is consumed by discharge. A battery to be thrown away when the discharge is not induced any more is called the primary battery. A battery in which if the active material is consumed completely, electricity is supplied from outside so as to reproduce the active material, thereby ensuring repeated use thereof is called the secondary battery.

[0009] The secondary battery includes lead acid battery used in such apparatus and devices as automobiles and alkaline battery used for such small devices as electronic devices. Of the alkaline batteries, a type using lithium as the active material has attracted public attention with prevailing of portable phones and notebook type personal computer because it is the lightest and small.

[0010] The inventor of the present invention has not surveyed preceding technologies at research/development stage and patent filing stage. Therefore, he does not have any knowledge about the preceding technology which should be mentioned here.

[0011] Chemical reaction at the time of the discharge or recharge accompanies deposition or decomposition of electrolyte and if the discharge or recharge is repeated, crystal of deposited material is grown gradually and it never returns to its original state. Consequently, the capacity and electromotive force of the secondary battery drop, and therefore the battery needs to be replaced.

[0012] Further, a portable apparatus or device has a problem of battery runout when used outside of home or office. Electricity saving in the apparatus and device has been demanded to prolong their continuous usage time.

SUMMARY OF THE INVENTION

[0013] In views of the above-described problem, according to the present invention, radioactive substance is fixed to a sheet-like material and this sheet-like material is bonded to an apparatus or device. Alternatively, radioactive substance is mixed in raw material resin and part of an apparatus or device is formed with an obtained compound. Or radioactive substance is mixed in paint and an apparatus or device is coated with this paint. Consequently, in case of a secondary battery incorporated in the apparatus or device, ions or deposit in an ion conductor is excited with radioactive ray so as to intensify chemical reaction activity of the ions or deposit, thereby preventing growth or excessive expansion of the deposit or crystal. In case of the conductor such as metallic wiring in an apparatus or device, bonding electrons in metallic wiring are excited so as to increase the degree of freedom, thereby reducing electric resistance of the conductor. As a result, the above-described problem is solved.

BRIEF DESCRIPTION OF DRAWINGS

[0014] FIG. 1 is a schematic longitudinal sectional view of an electric characteristic modifying material of the present invention;

[0015] FIG. 2 is an enlarged sectional view of major portions of the electric characteristic modifying material in which ceramics powder is mixed in radioactive substance;

[0016] FIG. 3 is a use condition diagram of a sheet-like electric characteristic modifying material and a lid-like electric characteristic modifying material; and

[0017] FIG. 4 is a use condition diagram of a coating agent like electric characteristic modifying material.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, the embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0019] As shown in FIG. 1, in the electric characteristic modifying material 1 of the present invention, radioactive substance 4 is fixed on the surface of a sheet material 3 using adhesive agent made of epoxy resin or the like.

[0020] An adhesive layer 5 is provided on the rear surface and the surface of the adhesive layer 5 is covered with a separation paper 6.

[0021] Any sheet material 3 may be used as long as it is plastic and for example, metallic foil, resin film, unwoven cloth and the like are permissible.

[0022] The radioactive substance 4 emits an ultra small amount of radioactive ray which does not affect the human body and for example, radium, radon and the like can be mentioned. Although there is no limitation on which it is natural ore or refined product, one in a form of fine powder is preferable.

[0023] It is permissible to mix ceramics powder 7 in the radioactive substance 4 and as shown in FIG. 2, with the ceramic powder 7 as aggregates, porous radioactive layer 8 containing the radioactive substance 4 is formed on the surface of the sheet material 3.

[0024] The kind of the ceramics powder 7 is not restricted to any one and for example, silica, alumina, zirconia and the like are permissible.

[0025] Upon use, the separation paper 6 is remove and then the adhesive layer 5 on its rear surface only has to be pressed against an object. For example, when it is employed for the portable phone T, it is bonded to an inner bottom of an accommodating portion of the secondary battery B (see FIG. 3).

[0026] Next, a modification example will be described.

[0027] The electric characteristic modifying material 1 of a first modification is produced by mixing the radioactive substance 4 in the raw material resin 9 and forming the obtained compound into a desired shape. For example, in case of the portable phone T, it is formed into the configuration of a lid 10 of the accommodating portion in the secondary battery B (see FIG. 3).

[0028] The raw material resin 9 may be of any kind if it can be formed into an appropriate configuration, and for example, thermoset resin such as phenol resin, formaldehyde resin, urea resin, silicon resin, and thermoplastic resin such as polyethylene, polystyrene, poly methyl methacrylate and photo-setting resin such as polyurethane methacrylate, oligoester methacrylate, urethanacrylate, epoxyacrylate, photosensitive polyimide, aminoalkyd can be mentioned.

[0029] In the electric characteristic modifying material 1 of a second modification, the radioactive substance 4 is mixed with a paint 11. As the paint 11, any well known one may be used whether it is organic or inorganic.

[0030] Upon use, the paint 11 is applied to an inner surface of the lid 10 of the portable phone W, for example (see FIG. 4).

[0031] Next, an operation of the electric characteristic modifying material of the present invention will be described.

[0032] The radioactive substance 4 in the electric characteristic modifying material 1 always emits radioactive ray.

[0033] Ions in the icon conductor of the secondary battery B which receives this radioactive ray likely generates chemical reaction because valence electron is transited to excitation state.

[0034] Therefore, generation velocity of deposit due to chemical reaction upon discharge increases and therefore, crystal growth is suppressed, so that crystal is never expanded too much.

[0035] Further, the generated deposit is decomposed easily by exchange of electrons because bonding electron is excited due to reception of radioactive ray.

[0036] On the other hand, conductors in various circuits and wirings in an electric apparatus or device are made of metal and in metal, a number of atoms are coupled by free electrons. Thus, if the conductor receives radioactive ray from the radioactive material 4, the free electrons relating to such metallic coupling are excited. Because those excited electrons have a higher kinetic energy than electrons in ground state, when a voltage is applied to the conductor, free electrons move easily.

[0037] Therefore, electric resistance of the conductor drops as compared to a case where no radioactive ray is received.

[0038] In conclusion, the present invention is accomplished by fixing the radioactive substance 4 to the sheet material 3 and therefore, only by bonding an embodiment of the present invention to various kinds of electric apparatus or device, deterioration of the secondary battery B used in the apparatus or device can be prevented and electric resistance of circuits and wirings in the apparatus or device can be decreased, thereby achieving power saving of the apparatus or device and extending its continuous use time.

[0039] Further, if a deteriorated secondary battery B is used in an apparatus or device on which the embodiment of the present invention is bonded, deposit which has been generated in the ion conductor of the secondary battery B and grown to be substance hard to decompose is decomposed easily due to an action of radioactive ray. Therefore, the storage capacity and electromotive force of the second battery B can be recovered.

[0040] If the sheet-like material 3 is formed into a narrow tape, for example, it can be wound around a power transmission line from an electric power station so as to suppress drop in voltage. Consequently, power loss in transmission of electric power to a remote place is small, thereby contributing to energy saving.

[0041] In the above embodiment, the radioactive substance 4 is mixed with the raw material resin 9 and the obtained compound is formed. For example, if a sheath case of an electric apparatus or device is formed, radioactive ray is emitted from the sheath case. Therefore, the sheath case itself can be supplied with functions for preventing the deterioration of the secondary battery B and reducing electric resistance thereof. Consequently, there is no feeling of disharmony on its appearance and the same effect as described above can be obtained.

[0042] Because the compound is obtained by mixing the radioactive substance 4 with the paint 11, it only has to be applied and can be used for existing apparatus, device and equipment.

[0043] Although the conductor in the secondary battery B or electric apparatus or device is heated when supplied with electricity, the radioactive layer 8 containing the radioactive substance 4 turns to porous because the ceramics powder 7 is mixed with the radioactive substance 4, so that its specific surface area is increased and heat radiation efficiency is improved. Therefore, drop in electromotive force of the secondary batter B and rise in electric resistance of the conductor due to heat can be suppressed, thereby indicating that practical effect of the present invention is very large.

Claims

1. An electric characteristic modifying material produced by fixing radioactive substance to a sheet-like material:

2. An electric characteristic modifying material produced by applying radioactive substance to raw material resin and forming an obtained compound.

3. An electric characteristic modifying material produced by applying radioactive substance to paint.

4. The electric characteristic modifying material according to claim 1, wherein ceramics powder is mixed with the radioactive substance.

5. The electric characteristic modifying material according to claim 2, wherein ceramics powder is mixed with the radioactive substance.

6. The electric characteristic modifying material according to claim 3, wherein ceramics powder is mixed with the radioactive substance.