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US 6,819,545 B1Granted
High current capacitors
AssigneeParallax Power Components, LLC
InventorsEdward M. Lobo, Francis Mello
Life of this patent
Estimating the term…
Abstract
A capacitor including an expandable part fabricated on a capacitor housing is enclosed. The expandable part is expandable by a fault that occurs within the capacitor housing, thereby extending the capacitor housing to contact with an external interrupter. The external interrupter includes an external electrode and an external sensing circuit. The external sensing circuit detects a contact between the capacitor housing and the external electrode and sends a signal to disconnect the capacitor from an apparatus circuit.
Claims24
A capacitor comprising:
- a housing having a first end and a second end;
- and
- an external expandable part located on the housing between the first end and the second end, wherein the expandable part is configured to expand due to a fault that occurs within the housing,
- wherein an expansion of the external expandable part causes the housing to extend in length to make contact with an external interrupter.
1 more element
A capacitor comprising:
- a housing having a first end and a second end;
- and
- an expandable part located on the housing between the first end and the second end, wherein the expandable part is configured to expand due to a fault that occurs within the housing,
- wherein an expansion of the expandable part causes the housing to extend in length to make contact with an external interrupter,
- wherein the external interrupter comprises:
- an electrode located at a position close to but not in contact with the housing when the capacitor is operated normally;
- and
- a sensing circuit for sensing the contact of the housing with the electrode plate when a fault occurs within the capacitor.
5 more elements
A capacitor comprising:
- a housing having a first end and a second end;
- an expandable part on the housing which is expandable by a high pressure resulted from a fault occurs within the housing;
- an external electrode;
- and
- an external sensing circuit coupled between the capacitor housing and the external electrode,
- wherein the external electrode is located at a position close to, but not in contact with the housing when the capacitor is operated normally,
- wherein when the fault occurred within the capacitor, the housing is extended by the expandable part to make a contact with the external electrode to complete the external sensing circuit.
4 more elements
A electrical system comprising:
- at least one capacitor device comprising a housing having a first end and a second end and an expandable part fabricated on the housing which is expandable by a fault occurred within the housing;
- an external electrode device;
- and
- an external sensing circuit device coupled between the housing and the external electrode device for sensing a contact between the housing and the external electrode device;
- wherein the external electrode device is located at a position close to, but not contact with the housing of the capacitor device when the capacitor is operated normally;
- and
- wherein the external electrode device contacts with the housing of the capacitor device when the fault occurs within the housing.
4 more elements
A capacitor comprising:
- a housing having a top end and a bottom end, wherein the top end and the bottom end are separated from each other by a distance;
- an expandable part disposed on the housing between the top end and the bottom end, wherein the expandable part is configured to increase the distance when a pressure within the housing increases;
- and
- an electrical contact disposed on one of the top end and the bottom end, wherein the electrical contact is configured to complete an external circuit when the distance is increased.
1 more element
An electrical system comprising:
- a capacitor comprising
- a housing having a top end and a bottom end, wherein the top end and the bottom end are separated from each other by a distance;
- an expandable part disposed on the housing between the top end and the bottom end, wherein the expandable part is configured to increase the distance when a pressure within the housing increases;
- and
- an electrical contact disposed on one of the top end and the bottom end, wherein the electrical contact is configured to complete an external circuit when the distance is increased;
- and
- an external interrupter configured to cutoff power supply to the capacitor when the external circuit is completed by the electrical contact of the capacitor when the distance is increased.
4 more elements
Dependencies are inferred from the claim text.