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US 10,946,746 B2Granted
Vehicle power system including ultra-capacitor for mitigating transient current events
AssigneeFord Global Technologies, LLC
InventorsAndrew Hudson, David Celinske, John Anthony DeMarco, Farouq Mozip
Life of this patent
Estimating the term…
Abstract
A vehicle power system includes loads, a battery coupled to the loads, an ultra-capacitor coupled to the battery, and a bypass circuit. The loads, the ultra-capacitor, and the battery are electrically coupled in series. The bypass circuit monitors the ultra-capacitor and prevents the ultra-capacitor from over-discharging and reversing in polarity.
Claims17
A power circuit comprising:
- loads;
- an ultra-capacitor coupled to the loads;
- a battery coupled to the ultra-capacitor;
- and
- a bypass circuit, wherein the loads, the ultra-capacitor, and the battery are electrically coupled in series,
- wherein the bypass circuit comprises:
- a first op-amp coupled to the ultra-capacitor;
- a second op-amp coupled to a voltage generator, wherein an output of the first op-amp is input to the second op-amp coupled to the output;
- and
- a transistor coupled to the ultra-capacitor, wherein the transistor is configured to activate based on an output voltage of the second op-amp, and
- wherein bypass circuit is configured to:
- monitor the ultra-capacitor;
- and
- prevent the ultra-capacitor from over-discharging and reversing in polarity.
11 more elements
A power circuit comprising:
- loads;
- a battery coupled to the loads;
- an ultra-capacitor coupled to the battery;
- and
- a bypass circuit, wherein the loads, the ultra-capacitor, and the battery are electrically coupled in series,
- wherein the bypass circuit comprises:
- a first op-amp coupled to the ultra-capacitor;
- a second op-amp coupled to a voltage generator, wherein an output of the first op-amp is input to the second op-amp coupled to the output;
- and
- a transistor coupled to the ultra-capacitor, wherein the transistor is configured to activate based on an output voltage of the second op-amp, and
- wherein bypass circuit is configured to:
- monitor the ultra-capacitor;
- and
- prevent the ultra-capacitor from over-discharging and reversing in polarity.
11 more elements
A vehicle comprising:
- loads;
- an ultra-capacitor;
- a battery;
- and
- a bypass circuit, wherein the loads, the ultra-capacitor, and the battery are electrically coupled in series,
- wherein the bypass circuit comprises:
- a first op-amp coupled to the ultra-capacitor;
- a second op-amp coupled to a voltage generator, wherein an output of the first op-amp is input to the second op-amp coupled to the output;
- and
- a transistor coupled to the ultra-capacitor, wherein the transistor is configured to activate based on an output voltage of the second op-amp, and
- wherein bypass circuit is configured to:
- monitor the ultra-capacitor;
- and
- prevent the ultra-capacitor from over-discharging and reversing in polarity.
11 more elements
Dependencies are inferred from the claim text.