JPH0765806A - Battery and its use - Google Patents

Abstract

PURPOSE:To easily perform electric connection and fixing of thin battery by adhering a releasing member having adhesive material on one surface of the battery. CONSTITUTION:A positive electrode collector 8 is provided with a slit 11. A similar slit is provided at a part of a negative electrode collector 3 facing a connection part where the slit of the connector 8 is disconnected. Next, the slit 11 of the collector 8 is disconnected to connect one along width and two along length in a battery 2 comprising thus manufactured plural thin batteries. Releasing film 13 holding surface adhesive material 12 in dots is then bound to the collector 8. They are then cut from the surface side of the collector 3 to adhesive material 7 in such a way that a positive electrode is not short- circuited with a negative electrode in cutting. Cutting may be performed simultanously after adhering the film 13 having the adhesive material 12 to either collector surface.

Description

Detailed Description of the Invention

[0001]

The present invention relates to fashion, toys,
The present invention relates to a battery used in the field of electronic devices and the like.

[0002]

2. Description of the Related Art Conventionally, in the case of a portable device using a battery, for example, a thin radio, a coin type battery is used, which is inserted into a battery holder from the side surface of the device and placed in the device to be electrically connected. Since it was connected to, at least the thickness of the equipment required the thickness of the coin-type battery.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a structure and method capable of easily and thinly electrically connecting and fixing a battery. It is provided.

[0004]

Means for Solving the Problems The present invention achieves the above object, and is a battery element comprising a positive electrode active material, a separator, a negative electrode active material and the like between a positive electrode current collector and a negative electrode current collector facing each other. A thin unit cell whose outer periphery is arranged and whose periphery is sealed and adhered with an insulator, and a peeling member provided with an adhesive material is adhered to one side surface of the battery. At least a part of the portion corresponding to the child portion does not have an adhesive material, the adhesive material is discontinuously held on the peeling member surface such as a dot shape, a band shape, a grid shape, and the adhesive material portion is other. Battery is adhered to the same or opposite surface of the battery in parallel connection or in series connection, the adhesive portion has electrical conductivity at all times or when pressed, and facing positive electrode current collector and Between the negative electrode current collector, the positive electrode active material and the separator. A plurality of thin unit cells in which a battery element made of a negative electrode active material is arranged and the periphery of which is sealed and adhered with an insulator, and an adhesive material is attached to one side surface of a series of batteries connected by the insulator and the collector portion. In the method of using a battery to which the provided peeling member is adhered, peeling member of one or a plurality of thin unit cells cut from a series of batteries is peeled off, and an adhesive portion is a battery disposing place of equipment using the battery. By electrically connecting the respective pole terminal portions of the battery and the connection terminal portions of the device by adhering the battery to the device side,
At least a part of the connection terminal portion of the device and / or the terminal portion of the battery is made of an electrically conductive elastic member, and these are intended to solve the above-mentioned problems.

[0005]

By adjusting the number of thin batteries forming a series of batteries, a battery having an arbitrary battery capacity can be obtained, and the batteries can be thinly and easily connected in parallel and in series by the adhesive material. In addition, by forming the adhesive material discontinuously, it is easy to remove and replace the used battery, and even when using a predetermined battery from a series of batteries, it is connected to the adjacent battery by the adhesive material. Since it is not there, it is easy to remove. By providing the peeling member, it is possible to prevent a short circuit when the battery is not used (when the battery is stored). Further, by peeling off the peeling member (peeling film or peeling paper), exposing the adhesive material and pressing it against the battery location of the device, the battery can be adhesively fixed and the electrical connection can be made simple. Also, by configuring the terminal portion with an elastic member (for example, an adhesive resin mixed with conductive fine powder), when pressed, the electrical contact is improved due to the restoring force of the member.
The battery can be easily arranged and electrically connected to the device simply by bonding the battery.

[0006]

EXAMPLES Examples of the present invention will be described below. (Embodiment 1) FIG. 1 is an enlarged perspective view of a main part of a series of batteries 2 in which a plurality of thin unit cells 1 having a thickness of about 0.2 mm are connected in the vertical and horizontal directions. FIG. 2 is an enlarged sectional view taken along the line AA ′ of FIG. The negative electrode active material 4 (eg, lithium, lithium alloy, carbon, etc.) on the surface of the negative electrode current collector 3 (eg, stainless steel having a thickness of 20 μ, copper, etc.) having a thickness of about 30 μ and a length of about 1
It is arranged 8 mm wide and about 11 mm wide, and 5 layers of polymer solid electrolyte are further arranged thereon to a thickness of about 10 μm, and further contains a positive electrode active material 6 (for example, a conductive material whose main component is manganese dioxide, cobalt oxide, etc.). The mixture) was printed to a thickness of about 120μ. Next, a thickness of about 200μ with a grid-like pattern hole
The adhesive 7 (for example, modified polypropylene) was placed and temporarily bonded to the surface of the negative electrode current collector 3. Further, a positive electrode current collector (for example, stainless steel, aluminum or the like having a thickness of 20 μm) 8 having an undercoating treatment (not shown) having a thickness of about 2 μm was superposed and bonded to the adhesive 7. In this final adhesion, the surface of the current collector facing the battery element was pressurized by a heat insulating / elastic member so that no gas remained inside the battery, and degassing was performed. Note that the lower surface of the negative electrode current collector 3 is brought into contact with a plate or a roll surface provided with fine holes, and air is exhausted through the holes 9 or the slits 11 while adhering the adhesive material 7 in advance to the positive electrode current collector 8. By adhering 7 to the surface of the negative electrode current collector 3, it is possible to seal while venting the gas inside the battery. Triangular holes 9 were provided in advance at each corner of the positive electrode current collector 8 and the adhesive 7. The surface of the negative electrode current collector 3 corresponding to the hole 9 can be used as the negative electrode terminal 10. This degassing may be performed by rolling before the adhesive 7 is permanently bonded to the positive electrode current collector 8.

The positive electrode current collector 8 is provided with a slit 11 having a width of about 0.5 mm by punching or the like. A similar slit (however, the length is slightly different) is also provided in the portion of the negative electrode current collector 3 facing the connecting portion where the slit 11 of the positive electrode current collector 8 is interrupted. Next, in the battery 2 composed of the plurality of thin batteries 1 thus manufactured, the slits 11 of the positive electrode current collector 8 were cut with a Thomson blade so as to connect one in the width direction and two in the length direction. did. Next, a release film 13 holding the adhesive material 12 in a dot shape was adhered to the surface of the positive electrode current collector 8. The release film 13 may be adhered to the surface of the positive electrode current collector 8 of the battery 2 before cutting. Next, the adhesive material 7 was cut with a ceramics blade from the side of the negative electrode current collector 3 so that the positive electrode and the negative electrode were not short-circuited during cutting. After the release film 13 having the adhesive material 12 was adhered to either current collector surface, the above cutting (cutting of the release film 13, the positive electrode current collector 8, the adhesive material 7, and the negative electrode current collector 3) was performed at the same time. Is also good. Note that FIG. 2 additionally shows a state in which the release film 13 is adhered to the negative electrode current collector surface. In the drawing, in order to clarify the structure, it is described thicker than it actually is, and it is considered that the adhesive material 12 is not attached to the positive electrode terminal surface, but the thickness of the battery itself is about 0.2 mm, and the negative electrode current collector 3 is
By adhering the adhesive material 12 to the surface, the adhesive material 12 is also adhered to the positive electrode terminal surface.

Next, in the above battery, the adhesive material 1 was attached to the surface of the positive electrode current collector 8.
FIG. 3 shows a cross-sectional view of a main part of the battery in which the release film 13 provided with 2 is adhered and the release film 13 is removed and the battery is placed in a device. Battery negative terminal 10
A conductive paste as an elastic member 10 ′ is applied to the portion of the battery, and the battery is arranged so that the negative terminal 10 and the connection terminal 14 provided on the printed circuit board of the device match, and the adhesive 12 Was pressed against the surface of the device to fix the battery and electrically connected. Since the positive electrode terminal is formed on the entire surface of the positive electrode current collector, no special alignment is required with the positive electrode connection terminal of the device.

(Embodiment 2) A case where a plurality of batteries are stacked and used will be described. In FIG. 4, the adhesive material 16 is attached to the negative electrode terminal portion 17 on one side of the current collector surface (in this case, the positive electrode current collector 8).
FIG. 3 is a perspective view showing a state in which the entire surface is adhered except for a part thereof. Next, FIG. 5 shows a sectional view in which three of the batteries 15 are laminated. Battery 1
The adhesive material 16 of No. 5 has a function as an electrical insulating material when connected in parallel, and can prevent the surfaces of the positive electrode current collector 8 and the negative electrode current collector 3 from coming into direct contact with each other. The connection between the terminals is made by the elastic member 18 (the adhesive material 16 is arranged around the terminal) provided at the center of the terminal portion by the elastic force even when the terminal portions are adhered by the adhesive material 16. Complete without contact failure.

An embodiment in which electric conductivity is retained by constantly or pressing the adhesive material has not been described, but it is effective when the surfaces of the batteries are adhered to each other for electrical connection. For example, in the case where the portion corresponding to the negative electrode terminal 17 in FIG. 4 is eliminated and the battery is formed into a rectangular shape and the upper and lower surfaces are used as the positive electrode and the negative electrode current collector / terminal portion, for example, they are stacked, pressed and bonded in series. Can be connected. Moreover, the battery of Example 1 is also effective. That is, when the adhesive material is discontinuously adhered like a dot, the adhesive material is interrupted and electrically insulated between the positive electrode and the negative electrode, and the electrical connection between the two electrodes can be achieved only by the adhesive material on one side, and a short circuit occurs. There is nothing to do. Further, even if the elastic member is not arranged on the terminal portion, the elastic force of the adhesive material enables the electric connection with the connection terminal portion of the device. Furthermore, by pressing the adhesive material and making the bonded portion electrically conductive, both the electrical insulating property (only bonding without pressing) and the electrical conductivity (pressing at the same time as bonding) are performed. Therefore, it becomes easy to stack batteries and connect them in series and in parallel.

[0011]

In addition to the above, the present invention has the following effects. (1) The adhesive material has both effects of electrical insulation and electrical conductivity, and facilitates stacking of batteries. (2) The connection is complete by way of the elastic member. (3) The battery can be fixed and connected simply by peeling off the release film and adhering it to the device. (4) It becomes easy to connect a plurality of batteries in series / parallel. In the present invention, the material / width / length / thickness / number of thin unit cells, the position / width / length of slits, the type of battery element,
Size / thickness, adhesive material type / thickness, release member material /
Thickness, material and shape of elastic member, position of terminal part of each pole,
The number of thin unit cells of the battery is not particularly limited.

[Brief description of drawings]

FIG. 1 is a perspective view showing a series of batteries to which thin cell batteries according to the present invention are connected.

2 is a cross-sectional view taken along the line A-A 'in FIG.

FIG. 3 is a cross-sectional view of essential parts when the battery of the present invention is placed in a device.

FIG. 4 is a perspective view of a battery showing another embodiment according to the present invention.

FIG. 5 is a cross-sectional view when three batteries of the present invention are connected in parallel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Thin cell battery 2, 15 Battery 3 Negative electrode collector 7 Adhesive material (insulator) 8 Positive electrode collector 9 Hole 10, 17 Terminal part 10 ', 18 Elastic member 11 Slit 12, 16 Adhesive material 13 Separation member (Peeling film) 14 Equipment connection terminal

Claims (7)

[Claims] 1. A thin element in which a battery element composed of a positive electrode active material, a separator, and a negative electrode active material is disposed between a positive electrode current collector and a negative electrode current collector facing each other, and the periphery of which is sealed and adhered with an insulator. A battery comprising a battery, wherein a peeling member provided with an adhesive material is bonded to one side surface of the battery. 2. The battery according to claim 1, wherein the adhesive material has no adhesive material at least at a part corresponding to each pole terminal portion. 3. The battery according to claim 1, wherein the adhesive material is discontinuously held on the surface of the peeling member. 4. The battery according to claim 1, wherein the adhesive material portion is adhered to the same or opposite electrode surface of another battery and connected in parallel or in series. 5. The battery according to claim 1, wherein the adhesive material portion has electric conductivity at all times or when pressed. 6. A thin type in which a battery element composed of a positive electrode active material, a separator, and a negative electrode active material is disposed between opposing positive electrode current collectors and negative electrode current collectors, and the periphery of which is sealed and adhered with an insulator. In a method of using a battery, in which a plurality of unit cells are connected to each other by an insulator and a current collector, and a peeling member provided with an adhesive material is attached to one side surface of the battery, one battery cut from the battery Alternatively, by peeling off a plurality of peeling members of the thin unit cell and adhering the adhesive portion to the battery arrangement location of the device using the battery, each electrode terminal portion of the battery and the connection terminal portion of the device are electrically connected. A method of using a battery, which comprises connecting and fixing the battery to the device side. 7. The method of using a battery according to claim 6, wherein at least a part of the connection terminal portion of the device and / or the terminal portion of the battery is made of an electrically conductive elastic member.