Handheld tester for starting/charging systems

• US 7,235,977 B2
• Filed: 08/13/2004
• Issued: 06/26/2007
• Est. Priority Date: 03/19/2001
• Status: Expired due to Term

• Current Assignee: SPX Corporation
• Original Assignee: SPX Corporation
• Inventors: Freshour, Phillip, Koran, Matthew H.
• Primary Examiner(s): Hirshfeld; Andrew H.
• Assistant Examiner(s): He; Amy
• Application Number:
  US10/918,049
• Publication Number:
  US 20050017726A1
• Time in Patent Office: 1,047 Days
• Field of Search: 324/426, 324/429
• US Class Current: 324/426
• CPC Class Codes: G01R 15/125 for digital multimeters
• CPC Class Codes: G01R 31/007 using microprocessors or computers
• CPC Class Codes: G01R 31/388 involving voltage measurements

Abstract

The hand-held portable tester provides an improved system and method for testing storage batteries, vehicle starting systems and vehicle charging systems. The system and method more accurately calculates tests results for multiple types of storage batteries. The system and method provides a convenient charging system test that is completed at a single engine speed. In addition, the hand-held portable tester provides a coded or encrypted output for battery tests that can be identified with the battery to ensure compliance with battery return policies and detour fraud. A system and method of decoding or decrypting the output is also provided.

Claims

1. A hand-held, portable tester for testing a starter/charger system of an internal combustion engine, comprising a processor in circuit communication with an electronic test circuit and a display, said test circuit being capable of performing at least one test on the starting/charging system and said processor is programmed to execute code implementing a user menu providing a user with at least the following selectable test options:

(a) a battery test option, which if selected causes the tester to;

i. perform a plurality of battery tests on a starter/charger system battery connected to the tester, the plurality of tests including at least one test for a first type of battery and at least one test for a second type of battery; and

ii. display a plurality of different battery test results for the battery, including displaying at least one test result for the first type of battery and at least one test result for the second type of battery;

(b) a starter test option, which if selected causes the tester to prompt the user to start the internal combustion engine and further causes the tester to measure and display an output relating to a voltage across the battery while the internal combustion engine is started; and

(c) a charger test option, which if selected causes the tester to perform a plurality of tests on a charging circuit of the starter/charger system by;

i. prompting the user to put the vehicle in a Fast-Idle, No-Load state and then measuring and displaying an output relating to a voltage across the battery in the Fast-Idle, No Load state;

ii. prompting the user to put the vehicle in a Fast-Idle, High-Load state and then measuring and displaying an output relating to a voltage across the battery in the Fast-Idle, High Load state; and

iii. prompting the user to put the vehicle in a Fast-Idle state and then performing and displaying an output relating to a ripple test across the battery in the Fast-Idle state.

2. The hand-held, portable tester according to claim 1 wherein for the battery test option, the tester performs and displays results of a plurality of small-signal tests on the battery, including at least a small-signal test for a flooded lead-acid battery and a small-signal test for an AGM lead-acid battery.

3. The hand-held, portable tester according to claim 1 wherein for the battery test option, the tester performs and displays results of a plurality of small-signal tests on the battery, including at least a small-signal test for a flooded lead-acid battery, a small-signal test for a spiral plate AGM lead-acid battery, and a small-signal test for a flat plate AGM lead-acid battery.

4. The hand-held, portable tester according to claim 1 wherein for the battery test option, the tester performs and displays results of a plurality of small-signal impedance tests on the battery including at least an impedance-based test for a flooded lead-acid battery and an impedance-based test for an AGM lead-acid battery.

5. The hand-held, portable tester according to claim 1 wherein for the battery test option, the tester performs and displays results of a plurality of small-signal impedance tests on the battery including at least an impedance-based test for a flooded lead-acid battery, an impedance-based test for a spiral plate AGM lead-acid battery, and an impedance-based test for a flat plate AGM lead-acid battery.

6. The hand-held, portable tester according to claim 1 wherein said processor executes code to provide the user with an option to select one of the plurality of different battery test results for the battery, which if selected causes the tester to store data corresponding to the selected battery test result.

7. The hand-held, portable tester according to claim 6 wherein the tester generates a test code based on at least raw test data and test condition information corresponding to the selected battery test result, the test code not also being based on the selected battery test result itself.