The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 16, 2013
Filed:
Jul. 30, 2010
John J. Shaw, Burnsville, MN (US);
Ladd J. Brabec, Savage, MN (US);
Phillip M. Abbott, St. Paul, MN (US);
Matthew A. Musich, Minneapolis, MN (US);
John J. Shaw, Burnsville, MN (US);
Ladd J. Brabec, Savage, MN (US);
Phillip M. Abbott, St. Paul, MN (US);
Matthew A. Musich, Minneapolis, MN (US);
Thermo King Corporation, Minneapolis, MN (US);
Abstract
Systems and methods of monitoring battery health in an HVAC system. The charge state of a rechargeable battery and the number of amp-hours provided to or from the rechargeable battery are monitored. The number of amp-hours provided is recorded and an end-of-life condition is detected based on the number of amp-hours provided during the charge or discharge cycle. In some constructions, the end-of-life condition is detected by comparing the number of amp-hours provided during the charge or discharge cycle to a threshold. In some constructions, the end-of-life condition is detected by calculating a rate of change of the number of amp-hours provided during a charge or discharge cycle and comparing the rate of change to a threshold.