# US 4,396,691 A · Battery having separator sheathed/supported plates

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- Number: US 4,396,691 A
- Document ID: US4396691A
- Status: Granted
- Kind: A
- Application number: 06/332,164
- Filed: 1981-12-18
- Granted: 1983-08-02
- Earliest claimed: 1981-12-18
- Assignees: General Motors Corporation
- Inventors: Ellis G. Wheadon
- Web page: https://patentgrep.com/patent/US4396691A

## CPC

- H01M 10/14: Assembling a group of electrodes or separators
- H01M 50/528: Fixed electrical connections, i.e. not intended for disconnection
- H01M 50/463: Separators, membranes or diaphragms characterised by their shape
- Y02E 60/10: Energy storage using batteries
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

An electric storage battery including plates of one polarity sheathed in envelopes of separator material wherein each envelope includes a pouch for supporting the distal end of an adjacent opposite polarity plate.

## Claims

### Claim 1

An electric storage battery including a container having bottom, side and end walls defining at least one cell compartment and an electrochemically active cell element housed within said compartment, said element comprising:
a plurality of first polarity plates alternately interspersed a plurality of opposite polarity plates, said opposite polarity plates each having a first end joined to other opposite polarity plates in said element and a distal end remote from said first end;
a sheath encasing each of said first polarity plates and comprising a microporous, dendrite-suppressing, battery separator material having a lower edge resting on said bottom wall and lateral edges extending upwardly from said lower edge substantially parallel to said side walls; and
a swath of said separator material integral with said sheath and lying along at least one of said edges to define a pouch for receiving the distal end of an adjacent opposite polarity plate and supporting such opposite polarity plate above said bottom wall and in substantial alignment with said first polarity plates.

### Claim 2

An electric storage battery including a container having bottom, side and end walls defining at least one cell compartment and an electrochemically active cell element housed within said compartment, said element comprising:
a plurality of first polarity plates alternately interspersed a plurality of opposite polarity plates, said opposite polarity plates each having a first end joined to other opposite polarity plates in said element and a distal end remote from said first end, said first end lying adjacent a said side wall of said container;
a sheath encasing each of said first polarity plates and comprising a microporous, dendrite-suppressing, battery separator material having a lower edge resting on said bottom wall and lateral edges extending upwardly from said lower edge substantially parallel to said side walls; and
a swath of said separator material integral with said sheath and lying along at one of said lateral edges to define a pouch for receiving the distal end of an adjacent opposite polarity plate and supporting such opposite polarity plate above said bottom wall and in substantial alignment with said first polarity plates.