Storage battery-use separator and storage battery

a storage battery and separator technology, applied in the direction of cell components, cell component details, transportation and packaging, etc., can solve the problems of uneven fiber distribution in the direction of the thickness of the sheet, poor surface smoothness at the right-side surface of the sheet, and uneven fiber orientation in the longitudinal and cross directions

US20060281008A1Inactive Publication Date: 2006-12-14NIPPON SHEET GLASS CO LTD
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
Publication Date
2006-12-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

In a separator for use in storage battery of the invention comprising a paper sheet formed by wet process and mainly composed of glass fibers, since the fiber distribution is uniform in the longitudinal and the cross directions of the separator, and the fiber orientation is at random in the longitudinal and the cross directions of the separator, so that the gas recombination reaction is made uniform in the longitudinal and the cross directions as well as the moveability of an electrolyte during charge and discharge is also made uniform, and it can provide higher performance and stabilization of the battery performance, particularly, when it is applied to a valve regulated lead-acid battery.
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Description

TECHNICAL FIELD

[0001] The present invention concerns a separator for use in storage battery comprising a paper sheet formed by wet process and mainly composed of glass fibers, and a storage battery using the separator. BACKGROUND ART

[0002] Heretofore, a separator for use in storage battery comprising a paper sheet formed by wet process and mainly composed of glass fibers has been manufactured by using an inclined-type papering machine as shown in FIG. 5. In the drawing, fine arrows indicate the direction along which a paper stock solution 4 moves and fat arrows indicate the dewatering direction.

[0003] However, in a case of manufacturing a paper sheet formed by wet process and mainly composed of glass fibers by using an inclined-type papering machine, a forming wire 6 is moved obliquely upward from a portion below a pool 5 filled with the paper stock solution 4 in which glass fibers are dispersed in water while dewatering from the lower surface of the forming wire 6, and glass fib...

Examples

example 1

[0028] 100 mass % of fine glass fibers with an average fiber diameter of 0.8 μm were beaten using paper making water at pH of 2.5, and processed into paper at a paper making speed of 48 m / min by using an inclined-type papering machine provided with a pond regulator, to obtain a separator for use in a valve regulated lead-acid battery of 1.1 mm thickness and with 154 g / m2 of grammage.

example 2

[0029] 100 mass % of fine glass fibers with an average fiber diameter of 0.8 μm were beaten using paper making water at pH of 2.5, and processed into paper at a paper making speed of 24 m / min by using an inclined-type papering machine provided with a pond regulator, to obtain a separator for use in a valve regulated lead-acid battery of 2.2 mm thickness and with 308 g / m2 of grammage.

example 3

[0030] 100 mass % of fine glass fibers with an average fiber diameter of 0.8 μm were beaten using paper making water at pH of 2.5, and processed into paper at a paper making speed of 80 m / min by using a twin wire-type papering machine, to obtain a separator for use in a valve regulated lead-acid battery of 1.0 mm thickness and with 135 g / m2 of grammage.