US 6,475,660 B1Granted

Recombinant lead-acid cell and long life battery

AssigneeC&D Charter Holdings, Inc.

InventorsSudhan S. Misra, Franz Wagner

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Abstract

A lead-acid cell includes a case, positive and negative plates within the case, microporous separator material between adjacent plates and electrolyte in a starved amount, with the case having jar and covers joined by a weldment along overlapping cover and jars. The positive plates include a grid frame with an intermediate member extending between spaced apart generally peripheral portions of the frame, with pasted active material on the grid frame separated substantially into two portions by the intermediate member. Compressive force is adjustably continuously applied to the positive and negative plates within the case. The plates are suspended within the case at positions removed from the wall of the case, while plate growth is permitted in a manner that plate shorting is avoided.

Claims24

Dependent claims

A lead-acid battery comprising:

a. a plurality of vertically stackable interchangeable cell modules without cells thereof bearing the weight of cells in a higher module, each module comprising:
i. a plurality of interchangeable lead-acid cells arranged in spaced adjacency to one another in a horizontal row, said cells being individually free-standing and slidably removably replaceable from the front of said battery, each cell comprising:
(1) a case;
(2) upstanding planar positive and negative plates within said case, positioned transversely to said row;
ii. apertured planar rectangular cell support plate means underlying and vertically supporting said cells in said rows, apertures in said support means communicating with space between adjacent cells vertically supported thereby;
iii. web members upstanding from corners of said rectangular cell support means for supporting and thereby receiving the weight of a vertically higher modules while permitting slidable replacement of individual cells from said front of said battery;
b. cell support means of a next higher module resting on said web members upstanding from an immediately lower module;
c. said modules being arranged that respective horizontally positioned cells are vertically aligned so that said space between horizontally adjacent cells defines channels therebetween for cooling air flow through said apertures.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/925,354Filed 8 Sep 1997 · division
Priority: 10 Feb 1992
Granted: 5 Nov 2002
Term ends: Not estimatedThe source records don’t support an estimate.

Classification35 codes

H01M 10/16
Construction or manufacture: suspending or supporting electrodes or groups of electrodes in the case
B29C 65/02
Joining or sealing of preformed parts , e.g. welding of plastics materials; Apparatus therefor: by heating, with or without pressure
B29C 65/7802
Means for handling the parts to be joined, e.g. for making containers or hollow articles , e.g. means for handling sheets, plates, web-like…:…
B29C 66/542
Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms,…:…