Vehicle with selectable battery pack isolation detection circuitry using precision resistors
First Claim
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1. A vehicle comprising:
- first and second batteries respectively disposed within first and second housings defining mutually exclusive interiors;
a first resistor, disposed within the first housing, electrically connected with chassis ground;
both a switch and second resistor, disposed within the second housing, electrically connected in series with the first resistor; and
sense circuitry disposed only within the first housing to measure voltage across the first resistor to detect leakage current within the second housing.
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Abstract
A power system for a vehicle includes at least two battery packs spaced away from each other. A first battery pack includes a plurality of battery cells and a switching element electrically connected with the battery cells. A second battery pack includes a resistor electrically connected in series with the switching element, and sense circuitry configured to detect voltage across the resistor indicative of leakage current associated with the first battery pack.
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Citations
9 Claims
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1. A vehicle comprising:
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first and second batteries respectively disposed within first and second housings defining mutually exclusive interiors; a first resistor, disposed within the first housing, electrically connected with chassis ground; both a switch and second resistor, disposed within the second housing, electrically connected in series with the first resistor; and sense circuitry disposed only within the first housing to measure voltage across the first resistor to detect leakage current within the second housing. - View Dependent Claims (2, 3, 4)
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5. A vehicle comprising:
first and second batteries respectively disposed within first and second housings defining mutually exclusive interiors, the first housing completely containing sense circuitry and a first resistor electrically connected with chassis ground, the second housing containing both a switch and second resistor electrically connected in series with the first resistor, and the sense circuitry configured to detect voltage across the first resistor to detect leakage current in the second housing. - View Dependent Claims (6)
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7. A vehicle power system comprising:
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a first housing completely containing a first battery, sense circuitry, and a first resistor electrically connected with chassis ground; and a second housing containing a second battery, and both a switch and second resistor electrically connected in series with the first resistor, the first and second housings defining mutually exclusive interiors, and the sense circuitry configured to detect voltage across the first resistor to detect leakage in the second housing. - View Dependent Claims (8, 9)
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Specification