Patent EP0025663A2 successfully refreshed from Google Patents.
EP0025663A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Battery systems employing bipolar electrodes
Assignee: ZF International UK Ltd
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Filing: 1980-09-02
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Granted: —
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Expires: 2000-09-02
Abstract
Abstract A bipolar battery system comprises a plurality of flexible, conductive electrode strips 12 assembled into a stack 11 with porous, flexible insulating separator strips 13 being interposed between adjacent electrode strips 12. Each electrode strip 12 at the exterior of the stack 11 is provided on its innermost surface with electrochemically active material, and the or each electrode strip 12 in the interior of the stack 11 is provided on each of its opposite major surfaces with electrochemically active material. Sealing means 16 is provided around the ends and lowermost edges of the electrode strips 12. The stack 11 of electrode strips 12 and separator strips 13 is folded into a serpentine configuration and then mounted in a generally rectangular battery box such that the serpentine configuration winds back and forth between opposite walls of the box, with the electrochemically active material on each strip 12 being aligned with electrochemically active material of opposite polarity on an adjacent strip 12.
Inventors
- 👤 David John Brown
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 10:58
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/04; H01M10/0413; H01M10/0418; H01M10/0431; H01M10/045; H01M50/00; H01M50/50; H01M50/543; H01M50/547; H01M50/55; H01M50/552; H01M50/562; H01M50/564; H01M50/566; H01M6/00; H01M6/42; H01M6/46; H01M6/48; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
137 words
A bipolar battery system comprising a generally rectangular battery box, a plurality of flexible, conductive electrode strips stacked with porous, flexible, insulating separator strips interposed between adjacent electrode strips, each electrode strip at the exterior of the stack being provided on its innermost surface with electrochemically active material, and the or each electrode strip in the interior of the stack being provided on each of its opposite major surfaces with electrochemically active material, the stack of electrode strips and separator strips being arranged in the battery box in a serpentine configuration which winds back and forth between opposite walls of the box, with the electrochemically active material on each strip being aligned with electrochemically active material of opposite polarity on an adjacent strip, and sealing means extending around the ends and lowermost edges of the electrode strips.
Claim 2
Dependent Claim
137 words
A bipolar battery system comprising a generally rectangular battery box, a plurality of flexible, conductive electrode strips stacked with porous, flexible, insulating separator strips interposed between adjacent electrode strips, each electrode strip at the exterior of the stack being provided on its innermost surface with electrochemically active material, and the or each electrode strip in the interior of the stack being provided on each of its opposite major surfaces with electrochemically active material, the stack of electrode strips and separator strips being arranged in the battery box in a serpentine configuration which winds back and forth between opposite walls of the box, with the electrochemically active material on each strip being aligned with electrochemically active material of opposite polarity on an adjacent strip, and sealing means extending around the ends and lowermost edges of the electrode strips.
Claim 3
Dependent Claim
60 words
A system as claimed in Claim 1 wherein the electrochemically active material on each strip is provided in the form of a plurality of regions of electrochemically active material spaced along the length of the strip, with the regions of active material on each strip being aligned with respective regions of active material of opposite polarity on an adjacent strip.
Claim 4
Dependent Claim
53 words
A system as claimed in Claim 2 wherein the spacing of said regions of electrochemicallyactive material and the dimensions of said serpentine configuration are arranged so that all the regions of electrochemically active material are substantially aligned in a single row and extend generally parallel with said opposite walls of the battery box.
Claim 5
Independent Claim
43 words
A system as claimed in any preceding Claim, wherein a respective terminal member is electrically connected to the portions of each outer electrode strip folded to define said serpentine configuration, each terminal member being exposed at the external surface of the battery box.
Claim 6
Dependent Claim
23 words
A system as claimed in Claim 4, wherein each terminal member is hollow so that, in use, cooling water may be circulated therethrough.
Claim 7
Independent Claim
67 words
A system as claimed in any preceding Claim, wherein the electrochemically active material provided on the innermost surface of one outer electrode strip and on one major surface of.each inner electrode strip contains nickel hydroxide; and the electrochemically active material provided on the innermost surface of the other outer electrode strip and on the other major surface of each inner electrode strip contains zinc or cadmium oxide.
Claim 8
Independent Claim
19 words
A system as claimed in any preceding Claim,wherein at least the outer electrode strips are composed of copper foil.
References Cited (Backward Citations)
No citation records indexed.
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