Patent · US Active

Method for monitoring remaining service life of a battery

US8766643B2 · kind B2 · utility

12Cited by

13References

14Claims

0Family size

Assignee

Endress+Hauser Process Solutions AG · CH

Inventors

Werner Thoren · Lübeck, DE
Christian Seiler · Auggen, DE
Stefan Probst · Buchdorf, DE
Ingo Laible · Arlesheim, CH

Key dates

Filing date	Aug 6, 2009
Grant date	Jul 1, 2014
Priority date	—
Expiry date	Nov 10, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH02J7/00047
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method for monitoring the remaining service life of a battery used for operating a field device in automation technology. The present power consumption of the battery is ascertained. Then, during a first phase of life, power consumption of the battery ascertained during operation of the field device is compared with a predetermined threshold value. In the case of exceeding the predetermined threshold value, during a second phase of life, the battery is exposed to defined load spikes at predetermined time intervals. Voltage collapses corresponding to the defined load spikes are detected, and a warning report is generated when the voltage collapses reach a predetermined maximum limit value.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.