Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Cell enclosure structure – e.g. – housing – casing – container,...
Patent
1996-06-26
1999-11-30
Nuzzolillo, Maria
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Cell enclosure structure, e.g., housing, casing, container,...
428648, 428679, 428680, 428681, H01M 202
Patent
active
059939940
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a surface treated steel sheet for battery containers, a battery container and a battery using the battery container. It especially relates to a surface treated steel sheet for battery containers for an alkali manganese battery, a battery container using the surface treated steel sheet and a battery using the battery container.
THE BACKGROUND ART
So far, the post-plating method wherein a drawn container produced from cold rolled steel strip is plated in a barrel plating or pre-plating method, where a nickel plated steel strip is drawn into a battery container, have been employed for battery containers used for primary batteries such as alkali manganese batteries, secondary batteries such as nickel cadmium batteries, and a nickel-hydrogen battery in which a strong basic solution is packed, that is expected to be increasingly in demand as a new secondary battery. The reasons why nickel plating is employed for battery containers such as those used for alkali manganese battery or nickel cadmium battery are as follows: in these batteries, and nickel has excellent corrosion resistance to alkaline solutions. external terminal. into batteries in the battery manufacturing process or when batteries are serially connected in order to increase voltage or when they are connected in parallel in order to allow large current flow, and nickel has excellent weldability.
However, barrel plating causes unstable quality due to insufficient plating thickness and the difficulty of uniform deposition caused by insufficient circulation of plating solution deep into the bottom portion of the battery container when the inside of a tall cylindrical battery container is plated by barrel plating. On the other hand, although the above-mentioned problems are not caused in the pre-plating method, the battery container produced from a nickel-plated steel sheet, treated by thermal diffusion has improved corrosion resistance because the nickel plating layer is recrystallized and softened and thus has good extensibility. However, it has poor adhesion to the positive electrode mix because the inner surface of the positive electrode container (the battery container of the present invention) has small cracks and a smooth surface after drawing.
Thereupon, battery performance has a close relationship to the properties of the inner surface of the positive electrode container (the battery container of the present invention) in an alkali manganese battery (see FIG. 2). The better the adhesion of the positive electrode mix (composed of manganese dioxide as the positive electrode active material, graphite as the conducting material and potassium hydroxide as the electrolyte) of the alkali manganese battery to the inner surface of the battery container, the better the battery performance. In the case of an alkali manganese battery, the positive electrode mix is in contact with the battery container and the battery container functions not only as a container but also as an electrical conductor that transmits electrons. Therefore, when the contact resistance between the positive electrode mix and the inner surface of the battery container is large, the internal resistance of the battery is likewise large, and battery performance is deteriorated by the resultant drop of current or reduction of discharge duration. Therefore, it is preferable to reduce the contact resistance between the positive electrode mix and the inner surface of the battery container as little as possible in order to obtain a high performance battery.
Alkali manganese batteries are superior to manganese batteries in performance in high load electrical discharge where there is an especially large current flow, and the battery performance of the alkali manganese battery can be improved by reducing internal resistance of the battery. For the purpose of reducing the contact resistance between the positive electrode mix and the battery container to enable a large current flow, several methods such as roughening the inner surface of t
REFERENCES:
patent: 2669597 (1954-02-01), Ruben
patent: 3260580 (1966-07-01), Kamm et al.
patent: 4104135 (1978-08-01), Fujimaki et al.
patent: 4413039 (1983-11-01), Higuchi et al.
patent: 4731301 (1988-03-01), Higuchi et al.
patent: 4865927 (1989-09-01), Laig-Horstebrock
patent: 5026616 (1991-06-01), Schumm
patent: 5527641 (1996-06-01), Koshiishi et al.
patent: 5576113 (1996-11-01), Hirofumi et al.
patent: 5587248 (1996-12-01), Ohmura et al.
"Battery handbook", p. 84, by Maruzen in 1990. No month.
Iketaka Satoshi
Moriyama Hirokazu
Ohmura Hitoshi
Tomomori Tatsuo
Nuzzolillo Maria
Toyo Kohan Co. Ltd.
Tsang Susy
LandOfFree
Surface treated steel sheet for battery containers, a battery co does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Surface treated steel sheet for battery containers, a battery co, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface treated steel sheet for battery containers, a battery co will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1669353