US 5,667,907 AGranted

Electrical energy storage device for a motor vehicle

AssigneeEV Energy Systems, Ltd.

InventorsThomas E. Audit, Jon K. West

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Abstract

An electric energy storage device, comprises a casing and a coiled winding disposed within the casing. The winding includes a cathode plate including a strip having a pair of elongated side edges, an anode plate including a strip having a pair of elongated side edges, and a separator located between the cathode and anode plates. The cathode and anode plates are wound in an offset relationship so that one elongated side edge of the cathode plate extends beyond one elongated side edge of the anode plate at a first side of the winding, and the other elongated side edge of the anode plate extends beyond the other elongated side edge of the cathode plate at a second side of the winding opposite the first side. An electrolyte material is located within the winding. Two current collectors are secured to the casing, one current collector being pressed against the first side of the winding to contact the cathode plate at a plurality of locations thereon, and the other current collector being pressed against the second side of the winding to contact the anode plate at a plurality of locations thereon. A pressure vessel may be provided to hold at least one of the casings having at least one of the windings therein. An electric vehicle includes a plurality of the energy storage devices.

Claims12

Dependent claims

A motor vehicle for transporting loads in excess of 100 pounds, the vehicle comprising:

a frame;
a plurality of wheels rotatably mounted on the frame;
an electric motor for driving at least one of the wheels;
and
an electrical energy storage device electrically connected to the motor for energizing the motor, the device including:
(a) a casing;
(b) a plurality of electrically connected coiled windings disposed within the casing, each winding including a cathode plate including a strip having a pair of elongated side edges, an anode plate including a strip having a pair of elongated side edges, and a separator located between the cathode and anode plates, the cathode plate and the anode plate being wound in an offset relationship so that one elongated side edge of the cathode plate extends beyond one elongated side edge of the anode plate at a first side of the winding, and the other elongated side edge of the anode plate extends beyond the other elongated side edge of the cathode plate at a second side of the winding opposite the first side;
(c) an electrolyte material located within each winding;
and
(d) and a plurality of current collectors disposed within the casing, at least one of the current collectors being pressed against one of the first and second sides of each winding to electrically contact the corresponding winding side at a plurality of locations thereon.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/420,691Filed 12 Apr 1995 · division
Priority: 21 Jul 1993
Granted: 16 Sep 1997
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

H01M 6/005
Primary cells; Manufacture thereof: devices for making primary cells
B60K 1/04
Arrangement or mounting of electrical propulsion units: of the electric storage means for propulsion
H01M 6/10
Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid: with wound or folded electrodes
H01M 6/42
Primary cells; Manufacture thereof: grouping of primary cells into batteries

Family

Serial94,711Parent of this continuation-in-part · filed 21 Jul 1993
Serial104,221Parent of this division · filed 11 Aug 1993
Serial295,106Parent of this division · filed 24 Aug 1994
US 5,439,488 AParent of this division
US 5,370,711 AParent of this division
US 5,667,907 AThis patent

From the US filing history. Foreign family members aren’t listed.