Methods and systems for performing active discharge using an active discharge circuit and an auxiliary circuit
AssigneeBorg Warner Luxembourg Automotive Systems SA
InventorsWalter Kiefer, Tillasthanam V. Sriram
Life of this patent
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Abstract
A method may include receiving a discharge request to perform discharge of a capacitor of an electric vehicle; closing a first switch a first circuit provided in parallel with a second circuit of the electric vehicle; determining a voltage drop of the capacitor, based on closing the first switch; and closing a second switch of the second circuit to perform the discharge of the capacitor, based on the determining the voltage drop of the capacitor indicating that a battery of the electric vehicle is disconnected from the capacitor.
Claims20
A method comprising:
- receiving a discharge request to perform discharge of a capacitor of an electric vehicle;
- closing a first switch of a first circuit provided in parallel with a second circuit of the electric vehicle;
- determining a voltage drop of the capacitor, based on closing the first switch;
- and
- closing a second switch of the second circuit to perform the discharge of the capacitor, based on the determining the voltage drop of the capacitor indicating that a battery of the electric vehicle is disconnected from the capacitor.
An electric vehicle comprising:
- a first circuit;
- a second circuit configured to perform discharge of a capacitor of the electric vehicle;
- and
- a processor configured to:
- receive a discharge request to perform the discharge of the capacitor of the electric vehicle;
- close a first switch of the first circuit provided in parallel with the second circuit of the electric vehicle;
- determine a voltage drop of the capacitor, based on closing the first switch;
- and
- close a second switch of the first circuit to perform the discharge the capacitor, based on the determining the voltage drop of the capacitor indicating that a battery of the electric vehicle is disconnected from the capacitor.
A discharge device comprising:
- a memory configured to store instructions;
- and
- a processor configured to execute the instructions to:
- receive a discharge request to perform discharge of a capacitor of an electric vehicle;
- close a first switch of a first circuit provided in parallel with a second circuit of the electric vehicle;
- determine a voltage drop of the capacitor, based on closing the first switch;
- and
- close a second switch of the second circuit to perform the discharge the capacitor, based on the determining the voltage drop of the capacitor indicating that a battery of the electric vehicle is disconnected from the capacitor.
Dependencies are inferred from the claim text.