Ideal diode function implemented with existing battery protection FETs
The present disclosure relates to apparatuses and methods of providing an ideal diode function to a battery having a protective field effect transistor (FET). An apparatus may include the protective FET configured to selectively connect an external voltage to a battery for charging the battery. The...
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| creator | Kristjansson, Stefan Jon Gudaitis, Algird Michael |
| description | The present disclosure relates to apparatuses and methods of providing an ideal diode function to a battery having a protective field effect transistor (FET). An apparatus may include the protective FET configured to selectively connect an external voltage to a battery for charging the battery. The apparatus may also include a controller coupled with a gate of the protective FET via a node and configured to enable the protective FET. The apparatus may further include an override circuit coupled to the node and configured to selectively draw current away from the gate of the protective FET based on the external voltage or to interrupt the path from a controller to a protective FET. The override circuit of the apparatus may provide protection from cross-charging of the battery by a second battery while using the protective FET that is already used for charge/discharge protection. |
| format | Patent |
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An apparatus may include the protective FET configured to selectively connect an external voltage to a battery for charging the battery. The apparatus may also include a controller coupled with a gate of the protective FET via a node and configured to enable the protective FET. The apparatus may further include an override circuit coupled to the node and configured to selectively draw current away from the gate of the protective FET based on the external voltage or to interrupt the path from a controller to a protective FET. 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An apparatus may include the protective FET configured to selectively connect an external voltage to a battery for charging the battery. The apparatus may also include a controller coupled with a gate of the protective FET via a node and configured to enable the protective FET. The apparatus may further include an override circuit coupled to the node and configured to selectively draw current away from the gate of the protective FET based on the external voltage or to interrupt the path from a controller to a protective FET. The override circuit of the apparatus may provide protection from cross-charging of the battery by a second battery while using the protective FET that is already used for charge/discharge protection.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CALCULATING CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER COMPUTING CONVERSION OR DISTRIBUTION OF ELECTRIC POWER COUNTING ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY GENERATION MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS SYSTEMS FOR STORING ELECTRIC ENERGY TESTING |
| title | Ideal diode function implemented with existing battery protection FETs |
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