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US 8,427,111 B2Granted
Battery, battery system and method for detecting abnormal state of battery
AssigneeEmpire Technology Development LLC
InventorMasakatsu Noguchi
Life of this patent
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Abstract
There is provided a battery system including a battery having a luminescent layer on surfaces of an exterior member [thereof], the luminescent layer containing a stress luminescent material that emits light in response to application of mechanical stress, a photodetector device that detects light emission by the stress luminescent material, and abnormality detection means for monitoring the light emission detected by the photodetector device and thus detecting an abnormality in the battery.
Claims10
A battery system comprising:
- a battery having a luminescent layer on a surface of an exterior member thereof, the luminescent layer comprising a stress luminescent material configured to emit light in response to application of mechanical stress;
- a photodetector device that is arranged to face the luminescent layer and configured to detect light emission by the stress luminescent material;
- and
- an abnormality detection mechanism configured to continuously, monitor the light emission detected by the photodetector device while the battery is being charged and further configured to intermittently monitor the light emission detected by the photodetector device while the battery is being discharged to detect an abnormality in the battery,
- wherein the abnormality detection mechanism is further configured to compare the monitored light emission pattern, and a prepared light emission pattern of the stress luminescent material when the battery is abnormal and thus detect an abnormality in the battery.
2 more elements
A method for detecting abnormal state of a battery in a battery system,
- the battery system including:
- the battery having a luminescent layer on a surface of an exterior member thereof, the luminescent layer comprising a stress luminescent material configured to emit light in response to application of mechanical stress;
- and
- a photodetector device that is arranged to face the luminescent layer and configured to detect light emission by the stress luminescent material,
- the method comprising:
- an abnormality detection mechanism configured to continuously monitor the light emission detected by the photodetector device while the battery is being charged;
- and further configured to intermittently monitor the light emission detected by the photodetector device while the battery is being discharged,
- monitoring the light emission detected by the photodetector device;
- and comparing the monitored light emission pattern and a prepared light emission pattern of the stress luminescent material when the battery is abnormal to detect an abnormality in the battery.
6 more elements
Dependencies are inferred from the claim text.