Electrical drain test system and method
First Claim
1. An electrical drain test device, comprising:
- an electrical connection configured to be connected in series with a battery and an electrical system under test;
a test circuit configured to test for parasitic drain in the electrical system under test, the test circuit operating in a first mode and a second mode, the first mode passes when measured current is less than a first mode current threshold and time is greater than a first mode time threshold, and the first mode fails when measured current is over a fast fail limit for a predetermined rate;
wherein if the first mode is indeterminate and does not pass or fail, then the test circuit continues testing in the second mode;
wherein in the second mode, the testing fast passes when measured current is under a fast fail limit, the testing full passes when measured current is less than a second mode current threshold and time is greater than a second mode time threshold, and the testing fails when accrued time from beginning of testing exceeds threshold time over a surge current limit; and
an output device to output a result of the test of the electrical system.
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Accused Products
Abstract
Electrical drain test systems and methods are disclosed. An example electrical drain test device includes a battery interface design with electrical cables to connect in-line with a battery and an electrical system under test. The example electrical drain test device also includes a battery disconnect switch. The switch has a first position to electrically connect the battery and the electrical system. The switch also has a second position to electrically connect the electrical system under test to the battery through a test circuit to test the electrical system under test for parasitic drain. The example electrical drain test device includes an output device to output a conclusive pass/fail result of the test of the electrical system by analyzing current curves through predetermined criteria programmed into the device.
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Citations
17 Claims
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1. An electrical drain test device, comprising:
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an electrical connection configured to be connected in series with a battery and an electrical system under test; a test circuit configured to test for parasitic drain in the electrical system under test, the test circuit operating in a first mode and a second mode, the first mode passes when measured current is less than a first mode current threshold and time is greater than a first mode time threshold, and the first mode fails when measured current is over a fast fail limit for a predetermined rate; wherein if the first mode is indeterminate and does not pass or fail, then the test circuit continues testing in the second mode; wherein in the second mode, the testing fast passes when measured current is under a fast fail limit, the testing full passes when measured current is less than a second mode current threshold and time is greater than a second mode time threshold, and the testing fails when accrued time from beginning of testing exceeds threshold time over a surge current limit; and an output device to output a result of the test of the electrical system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An electrical drain test device, comprising:
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electrical cables to connect in series with a battery and an electrical system under test; a battery disconnect switch having a first position to electrically connect the battery and the electrical system, the switch having a second position to electrically connect the electrical system under test to the battery through a test circuit to test the electrical system under test for parasitic drain in the electrical system under test, the test circuit operating in a first mode and a second mode, the first mode passes when measured current is less than a first mode current threshold and time is greater than a first mode time threshold, and the first mode fails when measured current is over a fast fail limit for a predetermined rate, wherein if the first mode is indeterminate and does not pass or fail, then the test circuit continues testing in the second mode; wherein in the second mode, the testing fast passes when measured current is under a fast fail limit, the testing passes when measured current is less than a second mode current threshold and time is greater than a second mode time threshold, and the testing fails when accrued time from beginning of testing exceeds threshold time over a surge current limit; and an output device to output a result of the test of the electrical system. - View Dependent Claims (11, 12, 13, 14)
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15. An electrical drain test method, comprising:
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testing an electrical system for parasitic drain by an automated testing device, the automated testing device operating in a first mode and a second mode, the first mode passes when measured current is less than a first mode current threshold and time is greater than a first mode time threshold, and the first mode fails when measured current is over a fast fail limit for a predetermined rate, wherein if the first mode is indeterminate and does not pass or fail, then the automated testing device continues testing in the second mode; wherein in the second mode, the testing fast passes when measured current is under a fast fail limit, the testing passes when measured current is less than a second mode current threshold and time is greater than a second mode time threshold, and the testing fails when accrued time from beginning of testing exceeds threshold time over a surge current limit; outputting a result of the test of the electrical system; and outputting a secondary diagnostics feature to aid in continuing diagnosis and repair of the electrical test system. - View Dependent Claims (16, 17)
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Specification