EP0129837A2
Expired / Lapsed
EP
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Electrochemical cell
Assignee: Battery Engineering Inc
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Filing: 1984-06-20
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Granted: —
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Expires: 2004-06-20
Abstract
Abstract An electrochemical cell includes an anode and a cathode electrochemically coupled by an electrolyte, means such as porous electrochemically non-conductive material placed within the anode and cathode to permit minimal electrode separation, and a cell housing which can be sealed hermetically or non-hermetically. According to the invention a novel electrochemical cell comprises a sealed non-metallic pouch of thin flexible material which forms a cell housing of deformable configuration to render the cell adaptable to varying battery configurations as well as cell shapes. A second feature includes a novel feedthrough arrangement wherein a pair of electrically conductive members are located on respective sides of an interjacent through-hole formed in the housing material. The pair of electrically conductive members are coupled through the through-hole to form the feedthrough. A method for making these novel electrochemical cells is provided.
Inventors
- 👤 James Epstein
- 👤 Nikola Marincic
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 01:32
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/50; H01M50/543; H01M50/552; H01M50/553; H01M50/10; H01M50/172; H01M50/174; H01M50/178; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10S; Y10S228/00; Y10S228/901; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/4911
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
100 words
An electrochemical cell comprising a sealed non-metallic pouch of thin flexible material having a pair of through-holes; two pairs of electrically conductive members, one pair overlaying each through-hole with the through-hole being interjacent the pair, the members of each pair being coupled through the through-hole; the pouch material surrounding each through-hole being sealed to the overlying members; an electrode of anode material electrically coupled to internally located member of one pair; an electrode of cathode material electrically coupled to the internal member of the second pair; means for separating the electrodes; and a volume of electrolyte electrochemically coupling the electrodes.
Claim 2
Dependent Claim
100 words
An electrochemical cell comprising a sealed non-metallic pouch of thin flexible material having a pair of through-holes; two pairs of electrically conductive members, one pair overlaying each through-hole with the through-hole being interjacent the pair, the members of each pair being coupled through the through-hole; the pouch material surrounding each through-hole being sealed to the overlying members; an electrode of anode material electrically coupled to internally located member of one pair; an electrode of cathode material electrically coupled to the internal member of the second pair; means for separating the electrodes; and a volume of electrolyte electrochemically coupling the electrodes.
Claim 3
Dependent Claim
18 words
The cell of Claim 1 wherein the pouch material is sealingly compressed between the members of each pair.
Claim 4
Dependent Claim
19 words
The cell of Claim 2 wherein the electrically conductive members of each pair are welded together through the through-hole.
Claim 5
Dependent Claim
12 words
The cell of Claim 2 wherein the pouch is formed from plastic.
Claim 6
Dependent Claim
12 words
The cell of Claim 4 wherein the plastic is a thermoplastic polymer.
Claim 7
Dependent Claim
11 words
The cell of Claim 5 wherein the pouch is heat sealed.
Claim 8
Dependent Claim
16 words
The cell of Claim 1 wherein the through-holes are formed in opposing faces of the pouch.
Claim 9
Dependent Claim
25 words
The cell of Claim 7 wherein at least one of the anode material and cathode material is attached onto the respective interior electrically conductive member.
Claim 10
Dependent Claim
25 words
The cell of Claim 8 wherein the pouch is formed from thin flexible material dimensioned to permit pouch expansion and consequential separation of the electrodes
Claim 11
Dependent Claim
30 words
The cell of Claim 9 including biasing means for maintaining minimal separation between the electrodes while permitting increased separation between the electrodes in response to increasing pressure in the pouch.
Claim 12
Dependent Claim
55 words
A feedthrough assembly for use in an electrochemical cell comprising a wall of thin flexible non-metallic material having a through-hole, a pair of electrically conductive members on opposite sides of the wall and overlying the through-hole, the members holding the interjacent wall material in compression and being electrically coupled with each other through the through-hole.
Claim 13
Dependent Claim
55 words
A feedthrough assembly for use in an electrochemical cell comprising a wall of thin flexible non-metallic material having a through-hole, a pair of electrically conductive members on opposite sides of the wall and overlying the through-hole, the members holding the interjacent wall material in compression and being electrically coupled with each other through the through-hole.
Claim 14
Dependent Claim
17 words
The feedthrough assembly of Claim 11 wherein the electrically conductive members are welded together through the through-hole.
Claim 15
Dependent Claim
13 words
The feedthrough assembly of Claim 11 wherein the wall is formed from plastic.
Claim 16
Dependent Claim
22 words
The feedthrough assembly of Claim 11 wherein the electrically conductive members are formed from a material selected from stainless steel and nickel.
Claim 17
Independent Claim
127 words
A method for assemblying an electrochemical cell comprising the steps of (a) forming a pair of through-holes in a sheet of thin resilient non-metallic material; (b) placing each through-hole between a respective pair of overlying electrically conductive members; (c) sealing the members of each pair of conductive members to the non-metallic material surrounding the through-hole; (d) electrically coupling the members of each pair through the interjacent through-hole; (e) electrically coupling an anode and a cathode respectively to the electrically conductive member of a different member pair on one side of the non-metallic sheet; (f) forming the non-metallic material into a pouch; (g) providing for minimal separation of the anode and cathode; (h) adding electrolyte in electrochemical contact with the anode and cathode; and (i) sealing the pouch.
Claim 18
Independent Claim
127 words
A method for assemblying an electrochemical cell comprising the steps of (a) forming a pair of through-holes in a sheet of thin resilient non-metallic material; (b) placing each through-hole between a respective pair of overlying electrically conductive members; (c) sealing the members of each pair of conductive members to the non-metallic material surrounding the through-hole; (d) electrically coupling the members of each pair through the interjacent through-hole; (e) electrically coupling an anode and a cathode respectively to the electrically conductive member of a different member pair on one side of the non-metallic sheet; (f) forming the non-metallic material into a pouch; (g) providing for minimal separation of the anode and cathode; (h) adding electrolyte in electrochemical contact with the anode and cathode; and (i) sealing the pouch.
Claim 19
Dependent Claim
45 words
The method of Claim 15 including the step of sealingly compressing the interjacent non-metallic material surrounding the through-hole between the electrically conductive members; and bonding the electrically conductive members together through the through-hole so that the interjacent non-metallic material is held in sealing compression therebetween.
Claim 20
Dependent Claim
23 words
The method of Claim 16 including the step of attaching the anode and cathode onto the interior member of a respective member pair.
Claim 21
Dependent Claim
21 words
The method of Claim 17 including the step of locating the anode and cathode on opposing interior faces of the pouch.
Claim 22
Dependent Claim
29 words
The method of Claim 18 including the step of sizing the pouch to permit increased pressure within the pouch during cell operation to separate the electrodes from each other.
Claim 23
Dependent Claim
19 words
The method of Claim 19 including the step of biasing the electrodes for minimal separation during predetermined operating pressures.
Claim 24
Dependent Claim
29 words
The method of Claim 15 wherein the non-metallic material is a thermoplastic polymer and the pouch is sealed by applying heat to the plastic to form a heat-sealed seam.
References Cited (Backward Citations)
No citation records indexed.
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