US 5,985,480 AGranted

Assembled batteries

AssigneeMatsushita Electric Industrial Co., Ltd.

InventorsKenji Sato, Nobuyasu Morishita, Hiroshi Inoue, Munehisa Ikoma

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Abstract

In constructing assembled batteries by electrically connecting through a connecting bar the terminals of neighboring single cells by means of metallic parts of the terminals, by directly covering both sides of the connecting bar with the exception of the electrical connection with an insulating protecting layer of either natural rubber, synthetic rubber, or synthetic resin, and by directly or indirectly insulating and protecting the surface of the metallic parts for electrical connection, it was made possible to prevent corrosion of the connecting bar and the metallic parts for electrical connection, and to prevent capacity fluctuation due to heretofore observed leakage current of single cells composing electric vehicle batteries to be used under severe conditions for a long period and at a high operating voltage, thereby improving the reliability and dramatically reducing the maintenance load.

Claims8

Dependent claims

Assembled batteries comprising:

a pair of battery cells having respective tops;
a pair of covers covering said tops of the pair of battery cells;
a pair of terminals, having respective sides, projecting upwards from the respective covers;
a connecting bar, having a top surface and a bottom surface and respective ends, electrically connecting the pair of terminals;
an insulating layer, having an upper segment and a lower segment and a pair of side segments, the upper segment, positioned between the terminals, extending along a portion of the top surface of the connecting bar, and the lower segment, positioned between the covers, extending along a portion of the bottom surface of the connecting bar, and the pair of side segments, contacting said respective ends of the connecting bar, extending along the respective sides of the pair of terminals;
and
a gasket about each of the pair of terminals situated between the pair of covers and the pair of side segments of the insulating layer.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/915,466Filed 20 Aug 1997
Priority: JP 8-21958621 Aug 1996
Granted: 16 Nov 1999
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

H01M 50/598
Means for preventing undesired use or discharge: guarantee labels
H01M 50/505
Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing: comprising a single…
H01M 50/517
Methods for interconnecting adjacent batteries or cells: by fixing means, e.g. screws, rivets or bolts
H01M 50/522
Characterised by the material: inorganic material