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US 9,425,466 B2Granted
Production method for a tubular fuel cell having a two-layer cap region of the support body
AssigneeRobert Bosch GmbH
InventorsThomas Loibl, Imke Heeren
Life of this patent
Estimating the term…
Abstract
A method for producing a tubular fuel cell by means of a pulling-core tool, the pulling-core tool comprising at least one tool part, which forms a cavity, and a pulling core, which can be positioned in at least two positions in the cavity.
Claims24
A method for producing a tubular fuel cell by means of a pulling-core tool, the pulling-core tool comprising:
- at least one tool part, which forms a cavity, and
- a pulling core, which can be positioned in at least two positions in the cavity,
- wherein a hollow space, which substantially corresponds to a form of a tubular body to be formed that is closed on one side by a cap portion, can be formed between the pulling core and the at least one tool part, the pulling-core tool having at least one sprue channel, which opens out into a hollow-space region in the form of a cap portion,
- wherein the method comprises the method steps of:
- a) injecting a first injection-molding component for forming a ceramic and/or vitreous material through the sprue channel into the pulling-core tool, the pulling core being positioned in a first position;
- b) positioning the pulling core in a second position, in which the pulling core is further away from the sprue channel than in the first position;
- and
- c) injecting a second injection-molding component, different from the first, for forming a ceramic and/or vitreous material through the sprue channel into the pulling-core tool.
5 more elements
A tubular fuel cell, comprising
- a tubular support body, which is closed at one end by a cap portion and
- at least one electrode-electrolyte unit, which comprises a cathode, an anode and an electrolyte arranged in between,
- wherein the at least one electrode-electrolyte unit is applied on an inner side or on an outer side of the tubular support body,
- wherein the tubular support body has in a portion or portions adjoining the electrode-electrolyte unit(s) gas-permeable pores and/or openings, and
- wherein the tubular support body has in the cap portion at least two ceramic and/or vitreous layers produced by injection molding and partially covering one another.
2 more elements
A tubular fuel cell, comprising
- a tubular support body, which is closed at one end by a cap portion and
- at least one electrode-electrolyte unit, which comprises a cathode, an anode and an electrolyte arranged in between,
- wherein the at least one electrode-electrolyte unit is applied on an inner side of the tubular support body,
- wherein the tubular support body has in a portion or portions adjoining the electrode-electrolyte unit(s) gas-permeable pores and/or openings, and
- wherein the tubular support body has in the cap portion at least two ceramic and/or vitreous layers produced by injection molding and partially covering one another.
2 more elements
Dependencies are inferred from the claim text.