Rechargeable electrochemical cell pack having resistance to impact and vibration

DETAILED DESCRIPTION OF THE INVENTION Referring now to the drawings wherein like numerals are used to indicate like parts throughout the various figures, FIG.
1 illustrates an exploded view of the preferred form of rechargeable cell pack 10 of the invention.
It is understood that the term "cell pack" denotes a unitary package including two or more individual electrochemical cells which are electrically interconnected, usually in series.
Cell pack 10 is a rechargeable system capable of providing electrical power for a wide variety of purposes.
Depending upon the number of internal individual cells and their manner of interconnection, any of a wide variety of voltages and current ratings can be provided.
For purposes of illustration, six electrochemical storage cells are shown in cell pack 10 although a different number of cells can be used.
The individual electrochemical cells preferred for use in the invention are the conventional rechargeable sealed lead acid cells.
A typical cell of this type is the D size sealed lead acid cell commercially available from the General Electric Company, the assignee herein.
These cells have a capacity rated at 2.
5 ampere hours at the "10 hour" rate and a nominal operating voltage of 2.
00 VDC.
Thus, the overall terminal voltage for cell pack 10 using six of the cells arranged in series connection will be about 12.
00 VDC.
It will be understood, of course, that the invention is applicable to cells of different sizes and ratings to produce cell packs of differing terminal voltages and ratings.
The aforementioned lead acid cells of the spiral wound type are of rugged construction.
These cells are fully sealed and make use of a cylindrical spiral wound plate design which provides high current density and low internal impedance, and can be operated, i.
e.
, charged and discharged, in any positioning arrangement, i.
e.
, sidewards, upside down, etc.
These cells typically include spaced apart spiral wound positive and negative lead plates (not shown) comprised of a grid-like construction