METHOD AND SYSTEM FOR DIAGNOSING BATTERY SYSTEM PROBLEMS
First Claim
1. A method for diagnosing a battery system problem in a vehicle, the method comprising the steps of:
- gathering one or more load related readings and one or more non-load related readings, wherein load related readings reflect performance of the battery system during a cranking event;
using at least one load related reading, at least one non-load related reading, or a combination of one or more load related readings and non-load related readings to determine if there is a battery system problem;
when it is determined that there is a battery system problem, then determining if there is a battery specific problem; and
when it is determined that there is a battery system problem and no battery specific problem, then diagnosing a battery connection problem.
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Abstract
A method and system for diagnosing battery system problems in a vehicle, where the method distinguishes between problems of various battery system components. More particularly, battery connection problems such as loose connections, corroded battery terminals, etc., may be distinguished from battery system problems as a whole. Load related readings that generally reflect the performance of the battery system during a cranking event and one or more non-load related readings may be gathered and used to determine whether there is a battery system problem and whether there is a battery specific problem. If load related readings and/or non-load related readings fail to indicate a battery specific problem, a battery connection problem may be diagnosed.
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Citations
17 Claims
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1. A method for diagnosing a battery system problem in a vehicle, the method comprising the steps of:
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gathering one or more load related readings and one or more non-load related readings, wherein load related readings reflect performance of the battery system during a cranking event; using at least one load related reading, at least one non-load related reading, or a combination of one or more load related readings and non-load related readings to determine if there is a battery system problem; when it is determined that there is a battery system problem, then determining if there is a battery specific problem; and when it is determined that there is a battery system problem and no battery specific problem, then diagnosing a battery connection problem. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for diagnosing a battery system problem in a vehicle, the method comprising the steps of:
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gathering one or more load related readings and one or more non-load related readings; using at least one of the load related readings to determine if an errant cranking event occurred; and when it is determined that an errant cranking event occurred, then evaluating one or more load related readings, one or more non-load related readings, or a combination of one or more load related readings and non-load related readings to determine if there is a battery connection problem. - View Dependent Claims (13, 14)
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15. A battery system for a vehicle, comprising:
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a battery; one or more battery connections; one or more battery sensors electrically connected to the battery via at least one of the battery connections; and a control module configured to; gather one or more load related readings that reflect performance of the battery system during a cranking event and one or more non-load related readings from the one or more battery sensors, use one or more load related readings to diagnose a battery system problem and a battery specific problem, and diagnose a battery connection problem if there is a battery system problem diagnosis and not a battery specific problem diagnosis. - View Dependent Claims (16, 17)
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Specification