JPH1165762A - Electronic equipment having display function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain the operation of a mouse even in a train, etc., by using a thin battery pack containing a polymer electrolytic secondary battery as a mouse pad when it's taken out of the main body of electronic equipment. SOLUTION: A thin battery pack 5 is removably loaded into a power store space 3 of a main body 1 of a personal computer while it's connected to the main body 1 via a lead. The pack 5 contains two polymer electrolytic secondary batteries, for example, which are sealed by a sheath material consisting of 4-layer laminated film containing a polyester film, a a polyethylene film, an aluminum foil and an ionomer film, for example. When the pack 5 is not used, it's loaded into the space 3 and connected to the main body 1. In a working mode, the pack 5 is taken out of the main body 1 and used as a mouse pad. Therefore, the personal computer can be operated even via a mouse 19 that is connected to the main body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device having a display function, and more particularly to an electronic device having a display function equipped with a thin battery pack as a power supply.

[0002]

2. Description of the Related Art For example, in an electronic device having a display function such as a notebook personal computer, operation is performed using a mouse. In order to operate the mouse, it is necessary to use a mouse pad, but there is a problem in a place where the mouse pad is not used. For example, when the notebook computer is used on a knee in a train or the like, it is necessary to prepare a mouse pad in addition to a mouse.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an electronic device which functions as a power source and has a display function in which a thin battery pack which functions as a mouse pad when a mouse is used is detachably mounted. is there.

[0004]

According to the present invention, there is provided an electronic apparatus having a display function, comprising: an apparatus main body having a display electrically connected thereto; and a state in which the display body is electrically connected to the main body. Wherein the thin battery pack contains a polymer electrolyte secondary battery and is used as a mouse pad when detached from the device body. It is assumed that.

[0005] Another electronic device having a display function according to the present invention is a device main body to which a display is electrically connected and mounted; and an electronic device attached to and detached from the back of the display while being electrically connected to the device main body. A thin battery pack that is freely mounted, wherein the thin battery pack contains a polymer electrolyte secondary battery and is used as a mouse pad when removed from the display. It is. It is preferable that the thin battery pack has at least one main surface subjected to a slipping process.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an electronic apparatus having a display function according to the present invention will be described in detail. This electronic device has a device main body to which a display is electrically connected and attached. The thin battery pack is detachably attached to the device main body while being electrically connected to the main body. This thin battery pack contains a plurality of polymer electrolyte secondary batteries. The thin battery pack is used as a mouse pad when detached from the device body.

[0007] The thin battery pack has a structure in which a plurality of polymer electrolyte secondary batteries having a positive electrode and a negative electrode laminated with a polymer electrolyte layer interposed therebetween are sealed and sealed with an exterior material.

Next, the positive electrode, the negative electrode, and the electrolyte layer constituting the secondary battery will be described. 1) Positive Electrode This positive electrode has a structure in which a positive electrode layer containing an active material, a nonaqueous electrolyte, and a polymer holding the electrolyte is supported on at least one surface of a current collector made of a metal net. The current collector has a terminal portion made of a band-shaped metal plate.

Examples of the active material include various oxides (eg, lithium manganese composite oxide such as LiMn ₂ O ₄ , manganese dioxide, lithium-containing nickel oxide such as LiNiO _2, and lithium-containing cobalt oxide such as LiCoO _2). Materials, lithium-containing nickel-cobalt oxide, lithium-containing amorphous vanadium pentoxide, etc.)
Chalcogen compounds (for example, titanium disulfide, molybdenum disulfide, etc.) can be exemplified. Among them, lithium manganese composite oxide, lithium-containing cobalt oxide,
It is preferable to use lithium-containing nickel oxide.

[0010] The non-aqueous electrolyte is prepared by dissolving an electrolyte in a non-aqueous solvent. As the non-aqueous solvent,
Ethylene carbonate (EC), propylene carbonate (PC), butylene carbonate (BC), dimethyl carbonate (DMC), diethyl carbonate (DE
C), ethyl methyl carbonate (EMC), γ-butyrolactone (γ-BL), sulfolane, acetonitrile, 1,2-dimethoxyethane, 1,3-dimethoxypropane, dimethyl ether, tetrahydrofuran (TH
F) and 2-methyltetrahydrofuran. The non-aqueous solvents may be used alone or as a mixture of two or more.

Examples of the electrolyte include lithium perchlorate (LiClO ₄ ) and lithium hexafluorophosphate (L
iPF ₆ ), lithium borotetrafluoride (LiBF ₄ ), lithium arsenic hexafluoride (LiAsF ₆ ), lithium trifluoromethanesulfonate (LiCF ₃ SO ₃ ), lithium bistrifluoromethylsulfonylimide [LiN (CF
₃ SO ₃ ) ₂ ].

It is desirable that the amount of the electrolyte dissolved in the non-aqueous solvent be 0.2 mol / l to 2 mol / l. Examples of the polymer holding the nonaqueous electrolyte include a polyethylene oxide derivative, a polypropylene oxide derivative, a polymer containing the derivative, and a copolymer of vinylidene fluoride (VdF) and hexafluoropropylene (HFP). Can be. The copolymerization ratio of the HFP depends on the method of synthesizing the copolymer, but is usually at most about 20% by weight.

[0013] The positive electrode layer may contain a conductive material from the viewpoint of improving conductivity. Examples of the conductive material include artificial graphite, carbon black (eg, acetylene black), nickel powder, and the like.

As the metal net as the current collector, for example, expanded metal made of aluminum, mesh made of aluminum, punched metal made of aluminum, or the like can be used.

The strip-shaped metal plate as the terminal portion can be formed, for example, from an aluminum foil. 2) Negative Electrode This negative electrode has a structure in which a negative electrode layer containing an active material, a non-aqueous electrolyte, and a polymer holding the electrolyte is supported on at least one surface of a current collector made of a metal net. The current collector has a terminal portion made of a band-shaped metal plate.

Examples of the active material include carbonaceous materials that occlude and release lithium ions. Such carbonaceous materials include, for example, those obtained by firing organic polymer compounds (eg, phenolic resin, polyacrylonitrile, cellulose, etc.), those obtained by firing coke and mesophase pitch, and those made by artificial graphite. And carbonaceous materials represented by natural graphite and the like. Among them, 500
It is preferable to use a carbonaceous material obtained by calcining the mesophase pitch at a temperature of from ℃ to 3,000 ℃ under normal pressure or reduced pressure.

As the non-aqueous electrolyte and the polymer, the same ones as those described for the positive electrode are used. The negative electrode layer is made of artificial graphite, natural graphite, carbon black, acetylene black,
It is allowed to contain conductive materials such as Ketjen black, nickel powder, and polyphenylene derivatives, and fillers such as olefin polymers and carbon fibers.

As the metal net as the current collector, for example, a copper expanded metal, a copper mesh, a copper punched metal, or the like can be used. The strip-shaped metal plate as the terminal portion can be formed from, for example, a copper foil.

3) Solid polymer electrolyte layer This electrolyte layer contains a non-aqueous electrolyte and a polymer holding the electrolyte. As the non-aqueous electrolyte and the polymer, the same ones as described for the positive electrode described above are used.

The electrolyte layer may contain an inorganic filler such as SiO ₂ powder in order to improve the compressive strength. The exterior material is composed of, for example, a four-layer laminate fill of a polyester film / polyethylene film / aluminum foil / ionomer film.

In the thin battery pack, it is preferable that at least one main surface of the exterior material is subjected to a sliding process using a material such as nylon resin. The thin battery pack may have a structure in which a plurality of battery packs sealed with the exterior material are housed in a resin case.

According to the electronic apparatus according to the present invention described above, a thin battery pack containing a plurality of polymer electrolyte secondary batteries is mounted as a power source on the main body of the apparatus. can do.

Further, since the thin battery pack also serves as a mouse pad, the thin battery pack can be used as a mouse pad by removing the thin battery pack from the main body of the device at the time of use. As a result, a thin battery pack serving also as a power supply can be stored as a mouse pad in the device main body without separately providing a dedicated space for the mouse pad in the device main body, that is, without increasing the volume of the device main body.
In particular, in a portable electronic device such as a notebook personal computer, a thin battery pack can be attached to the main body of the device without separately carrying the mouse pad, so that the portable device can be carried together with the mouse pad stored.

Further, the operability of the mouse can be improved by subjecting at least one main surface of the exterior material of the thin battery pack to a sliding process. Next, an electronic device having another display function according to the present invention will be described in detail.

This electronic device has a device main body to which a display is electrically connected and mounted. The thin battery pack is detachably attached to the back of the display while being electrically connected to the device main body. As described above, this thin battery pack has a structure in which a plurality of polymer electrolyte secondary batteries are sealed and sealed with an exterior material. The thin battery pack is used as a mouse pad when detached from the display.

In the thin battery pack, it is preferable that at least one main surface of the exterior material is subjected to a sliding process using a material such as nylon resin. According to another electronic apparatus according to the present invention described above, a thin battery pack having a built-in polymer electrolyte secondary battery as a power supply is mounted on a display, so that the storage pace of the power supply can be reduced and the size can be reduced. .

Further, since the thin battery pack also serves as a mouse pad, it can be used as a mouse pad by removing the thin battery pack from the display at the time of use. As a result, a thin battery pack serving also as a power supply can be mounted as a mouse pad without separately providing a mouse pad dedicated space, that is, without increasing the volume of the device body. In particular, in a portable electronic device such as a notebook computer, a mouse pad can be carried together by attaching a thin battery pack to the display without separately carrying a mouse pad. Furthermore, the operability of the mouse can be improved by subjecting at least one main surface of the exterior material of the thin battery pack to a sliding process.

[0028]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. (Embodiment 1) FIG. 1 (A) is a perspective view showing the notebook personal computer in the embodiment 1, and FIG. 1 (B) is a perspective view showing the operation of the notebook personal computer in FIG. 1 (A). 2 is a sectional view showing a thin battery pack mounted on the notebook computer of FIG.

The personal computer main body 1 has a keyboard 2 on the upper surface and a power storage space 3 on the bottom. The display 4 is attached to the main body 1 so as to be freely opened and closed. The thin battery pack 5 includes the main body 1.
The power supply storage space 3 is detachably mounted in a state where it is connected to the main body 1 through a lead.

As shown in FIG. 2, the thin battery pack 5 seals, for example, two polymer electrolyte secondary batteries 6 with an exterior material 7 composed of a four-layer laminated fill of, for example, a polyester film / polyethylene film / aluminum foil / ionomer film. , Having a sealed structure. The secondary battery 6 includes a negative electrode 8, a polymer electrolyte layer 9, and a positive electrode 10. The polymer electrolyte layer 9 is disposed on both surfaces of the negative electrode 8. The positive electrode 10 is laminated on an outer surface of each of the solid electrolyte layers 9.

The negative electrode 8 has a structure in which a negative electrode sheet 12 is supported on both surfaces of a current collector 11 made of, for example, copper expanded metal. The negative electrode sheet 12 is made of, for example, mesophase pitch carbon fiber and vinylidene fluoride-hexafluoropropylene (VdF-H) as active materials.
FP) and a non-aqueous solvent in which ethylene carbonate (EC) and dimethyl carbonate (DMC) are mixed at a volume ratio of 2: 1 and LiPF ₆ as an electrolyte at a concentration of 1 mol / mol. The non-aqueous electrolyte dissolved in L is retained. The current collector 11
It has a terminal portion 13 made of strip-shaped copper foil, and is connected to an external negative electrode lead (not shown) together with the terminal portion 13 of another secondary battery by ultrasonic welding. The external lead is
It extends outside from the sealing portion of the exterior material 7.

The polymer electrolyte layer 9 is made of vinylidene fluoride-hexafluoropropylene (VdF-HF).
The non-aqueous electrolyte having the above composition is held in the copolymer P).

Each of the positive electrodes 10 has a structure in which a positive electrode sheet 15 is supported on both surfaces of a current collector 14 made of expanded metal made of aluminum. The positive electrode sheet 15 contains a lithium manganese composite oxide, carbon black, and a copolymer of vinylidene fluoride-hexafluoropropylene (VdF-HFP), and holds the nonaqueous electrolyte having the above composition. Each of the current collectors 14 has a terminal portion 16 made of a band-shaped aluminum foil, and is connected to an external negative electrode lead 17 made of aluminum by ultrasonic welding together with a terminal portion 16 of another secondary battery. The external lead 17 extends outside from a sealing portion of the exterior material 7.

[0034] On both surfaces of the exterior member 7, a sliding layer 18 treated with a nylon resin is formed. When the notebook computer having such a configuration is not used, the thin battery pack 5 is connected to the personal computer main body 1 when not in use, as shown in FIG.
It is attached to.

On the other hand, when used, the thin battery pack 5 can be made to function as a mouse pad by pulling out the thin battery pack 5 from the personal computer body 1 as shown in FIG.
Therefore, by connecting the mouse 19 to the personal computer main body 1, the personal computer can be operated not only by the keyboard 2 of the main body 1 but also by the mouse 19. As a result, it becomes possible to operate the mouse by placing the personal computer on the lap in a car such as a train, and the operability of the personal computer can be significantly improved.

Further, by forming the sliding layer 18 on the main surface of the thin battery pack 5, the operation of the mouse 19 can be performed more smoothly. (Embodiment 2) FIG. 3A is a perspective view showing a notebook personal computer according to the second embodiment, and FIG. 3B is a perspective view showing an operation of the notebook personal computer shown in FIG. .
The same members as those in FIG. 1 described above are denoted by the same reference numerals, and description thereof will be omitted.

In this notebook personal computer main body, a pair of key-shaped hook members 20 are attached to the back of the display 4, and the thin battery pack 5 is detachably attached to the back of the display 4 by opening the hook members 20. Have been. The thin battery pack 20 is electrically connected to the personal computer body 1 through leads.

In the notebook computer having such a configuration, when not in use, the thin battery pack 5 is connected to the main body 1 of the personal computer 1 and the hook member 20 is attached to the back of the display 4 as shown in FIG. Has been mounted through.

On the other hand, when used, the thin battery pack 5 can be made to function as a mouse pad by pulling out the thin battery pack 5 from the back of the display 4 as shown in FIG. Therefore, the mouse 19 is connected to the personal computer 1
By connecting the PC to the keyboard 2 of the main unit 1
Not only can it be operated with the mouse 19. As a result, it becomes possible to operate the mouse by placing the personal computer on the lap in a car such as a train, and the operability of the personal computer can be significantly improved. Further, by forming the slip processing layer 18 on the main surface of the thin battery pack 5, the mouse 19 can be operated more smoothly.

[0040]

As described above in detail, according to the present invention, a thin battery pack, which is a power source, is made to function as a mouse pad. Sometimes, the thin battery pack can be removed and used as a mouse pad, so that the thin battery pack can be attached to or attached to the display without separately carrying the mouse pad and without providing a dedicated space for the mouse pad. Thus, the mouse pad can be carried together, and an electronic device having a display function such as a notebook computer with good operability that can be operated with a mouse in a car such as a train can be provided.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a notebook computer according to a first embodiment of the present invention.

FIG. 2 is an exemplary sectional view showing a thin battery pack mounted on the notebook computer of FIG. 1;

FIG. 3 is a perspective view showing a notebook computer according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... PC body, 3 ... Storage space, 4 ... Display, 5 ... Thin battery pack, 6 ... Polymer electrolyte secondary battery, 7 ... Exterior material, 8 ... Negative electrode , 9 ... Polymer electrolyte layer, 10 ... Positive electrode, 18 ... Sliding layer, 19 ... Mouse, 20 ... Hanging member

Claims (4)

[Claims] An apparatus main body to which a display is electrically connected and attached; and a thin battery pack detachably attached to the apparatus main body while being electrically connected to the main body. An electronic device having a display function, wherein the battery pack contains a polymer electrolyte secondary battery and is used as a mouse pad when the battery pack is removed from the device main body. 2. The electronic device having a display function according to claim 1, wherein the thin battery pack is detachably mounted in a space formed in a bottom portion of the device main body. 3. An apparatus main body to which a display is electrically connected and attached; and a thin battery pack removably attached to a back surface of the display while being electrically connected to the apparatus main body, The thin battery pack includes a polymer electrolyte secondary battery, and is used as a mouse pad when the battery pack is removed from the display. 4. The electronic device having a display function according to claim 1, wherein at least one of the main surfaces of the thin battery pack is subjected to a slipping process.