Dynamic Battery Voltage Restriction for Hazardous Environments
A method for dynamic limiting of battery voltage includes determining that a voltage delivered by a battery exceeds a predefined maximum safe voltage for operation of a portable electronic device in a hazardous environment and, in response, enabling a voltage restriction circuit in a supply line bet...
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| creator | Krishnamurthi, Macwien Chong, Kow Chee Yeoh, Chen Kok Azizan, Muhamad Ridzuan Lee, Wai Mun |
| description | A method for dynamic limiting of battery voltage includes determining that a voltage delivered by a battery exceeds a predefined maximum safe voltage for operation of a portable electronic device in a hazardous environment and, in response, enabling a voltage restriction circuit in a supply line between the battery and the portable electronic device to reduce the voltage delivered by the battery below the maximum safe voltage, and supplying electrical power to the portable electronic device at the reduced voltage. Enabling the voltage restriction circuit may include deactivating a MOSFET switch that includes a forward biased body diode to allow the body diode to provide a fixed voltage drop. The method also includes determining that the voltage delivered by the battery no longer exceeds the maximum safe voltage and, in response, disabling the first voltage restriction circuit by activating the MOSFET, thus allowing the body diode to be bypassed. |
| format | Patent |
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Enabling the voltage restriction circuit may include deactivating a MOSFET switch that includes a forward biased body diode to allow the body diode to provide a fixed voltage drop. 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| subjects | CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONTROLLING CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS GENERATION PHYSICS REGULATING SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES SYSTEMS FOR STORING ELECTRIC ENERGY |
| title | Dynamic Battery Voltage Restriction for Hazardous Environments |
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