Method for monitoring remaining service life of a battery

H - Electricity – 02 – J

Patent

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Details

H02J 7/00 (2006.01) G01R 31/36 (2006.01)

Patent

CA 2732938

The invention relates to a method for monitoring remaining service life of a battery (40) used for operating a field device (2) in automation technology. Present power consumption of the battery (40) is ascertained. During a first phase of life (LP1), power consumption of the battery (40) ascertained during operation of the field device (2) is compared with a predetermined threshold value. In the case of exceeding the predetermined threshold value, during a second phase of life (LP2), the battery (40) is exposed to defined load spikes (LS) at predetermined time intervals (tv). Voltage collapses corresponding to the defined load spikes (LS) are detected, and a warning report is generated when the voltage collapses reach a predetermined maximum limit value.

Linvention concerne un procédé de surveillance de lautonomie restante dune batterie (40) qui est utilisée pour faire fonctionner un appareil de terrain (2) en automatisme. Selon linvention, la puissance consommée actuelle de la batterie (40) est déterminée, la consommation de puissance déterminée de la batterie (40) pendant le fonctionnement de lappareil de terrain (2) est comparée avec une valeur de seuil prédéfinie pendant une première phase de vie (LP1) et, en cas de dépassement de la valeur de seuil prédéfinie, la batterie (40) est soumise pendant une deuxième phase de vie (LP2) à des pointes de charge (LS) données à des intervalles de temps (tv) prédéfinis. Toujours selon linvention, les effondrements de la tension correspondant aux pointes de charge (LS) données sont détectés et un message dalerte est généré lorsque les effondrements de la tension atteignent une valeur limite maximale prédéfinie.

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