Thermal Runaway and Fire Detection and Prevention Device
First Claim
1. A method to monitor and control a battery string charged by a charging source and connected to a critical load, the method comprising the steps of:
- measuring a battery parameter with a sensor to collect a measurement indicative of a condition of the battery string;
comparing the measurement with a standard battery parameter;
determining whether the measurement deviates outside a set range from the standard battery parameter;
initiating a time delay if the measurement deviates outside the set range from the standard battery parameter;
remeasuring the battery parameter at least once during the time delay to collect an additional measurement; and
activating an alarm if the additional measurement deviates outside the set range from the standard battery parameter.
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Abstract
A system and method to monitor and control a battery string in an uninterruptible power supply unit is provided. The present system and method aids in the prevention of thermal runaway conditions which may lead to battery damage and fire. Battery parameters are measured and compared to a given standard to determine if the measured parameter deviates from a range of acceptable standard range. A time delay is initiated if the measured parameter is outside the acceptable standard range and the battery parameter is remeasured. If the measured parameter is still outside the acceptable standard range, than an alarm is activated, which may include disconnecting the battery string from the charger and producing a perceptible alarm. False alarms are reduced and true runaway scenarios can be prevented at an early stage with the present system and method.
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Citations
15 Claims
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1. A method to monitor and control a battery string charged by a charging source and connected to a critical load, the method comprising the steps of:
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measuring a battery parameter with a sensor to collect a measurement indicative of a condition of the battery string; comparing the measurement with a standard battery parameter; determining whether the measurement deviates outside a set range from the standard battery parameter; initiating a time delay if the measurement deviates outside the set range from the standard battery parameter; remeasuring the battery parameter at least once during the time delay to collect an additional measurement; and activating an alarm if the additional measurement deviates outside the set range from the standard battery parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification