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Flat form battery

A flat-shaped battery technology, applied to battery components, circuits, electrical components, etc., can solve the problems that external equipment and batteries cannot be connected, external equipment cannot be installed, and the external size of batteries increases, so as to reduce material costs , to prevent the corresponding reduction, to suppress the effect of external dimensions

Inactive Publication Date: 2008-01-16
HITACHT MAXELL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

Therefore, as described above, if the entire peripheral side of the outer case is covered with insulating resin, the external equipment and the battery cannot be connected.
[0008] In the battery of Patent Document 2, since at least half of the peripheral side of the outer case (positive electrode case) in the circumferential direction is covered with an insulating coating film, the outer dimension of the battery increases accordingly, and it may not be possible to install it on an external device.

Method used

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Embodiment Construction

[0029] The drawings show an example of a primary battery which is a flat battery which is the object of the present invention. As shown in FIG. 1 , the battery container 1 is composed of an upwardly opening shallow dish-shaped positive electrode case (outer case) 3 and a downwardly opening shallow dish-shaped negative electrode case (sealing cover) 5, and the whole is made into a flat coin shape. The nominal voltage of the above-mentioned flat battery is 3V. Inside the battery container 1 , the power generating element 2 is accommodated, and an annular gasket 6 is arranged between the positive electrode case 3 and the negative electrode case 5 .

[0030] And, under the state that the power generation element 2 is accommodated inside the positive pole case 3, the negative pole case 5 is inserted into the opening inner edge side of the positive pole case 3 via the gasket 6, and fixed by riveting (the state of FIG. 6 The battery container 1 is sealed between the positive electro...

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Abstract

The invention provides a flat form cell which can prevent outer flasking and seal closure generate shortcircuit due to contact with the other cell, without changing overall dimension of cell. A cathode case (5) is imbeded into anode case (3) open towards by gasket (6) to form cell container (1). At the state of baring the up surface (5a) of the cathode case (5), the gasket (6) makes the anode case (3) and cathode case (5) seal and insulate. The insulating coating part (11) with insulatibity is made to surround the perimeter of the up surface (5a) of the cathode case (5).

Description

technical field [0001] The present invention relates to flat batteries such as button batteries and coin batteries. Background technique [0002] Flat primary batteries are often used as power sources for external devices such as portable small electronic devices. In this flat battery, the power generating elements including the positive electrode material and the negative electrode material are housed in the battery container, and the metal outer case and the sealing cover constituting the above battery container also serve as contact connections with the positive and negative terminals of the external equipment, respectively. connection terminals. [0003] The sealing cover is embedded into the opening of the outer box through the sealing gasket, and the sealing gasket is used to insulate the outer box and the sealing cover. Since the distance between the outer case and the sealing cap is small, metal pieces and the like are likely to be in contact with the outer case an...

Claims

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Application Information

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IPC IPC(8): H01M2/02
CPCY02E60/12Y02E60/10
Inventor 岸田章佐野健一
Owner HITACHT MAXELL LTD
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