Abstract: In at least one embodiment, a system is provided. The system includes a first bridge circuit, at least one transformer, a second bridge circuit, and at least one controller. The first bridge circuit includes a first plurality of switches that receives a first voltage and provides a second voltage. The transformer provides a third voltage based on the second voltage. The second bridge circuit includes a second plurality of switches that provides a fourth voltage. The controller is programmed to selectively activate at least one of the first plurality of switches and at least one of the second plurality of switches based on a predetermined modulation scheme, wherein the predetermined modulation scheme. The predetermined modulation scheme is based on at least a number of turns of the transformer, the predetermined modulation scheme minimizing a delay in selectively activating the first plurality of switches and the second plurality of switches.

Abstract: A system includes a power source, a capacitor, a precharge circuit, and/or a controller, in some configurations. The capacitor may be electrically connected to the power source. The precharge circuit may be electrically connected between the power source and the capacitor. The precharge circuit may include a switch connected in parallel with a resistor. The controller may be electrically connected to the power source and the precharge circuit. The controller may conduct a first precharging of the capacitor to a first voltage via the resistor. The controller may conduct a second precharging of the capacitor from the first voltage to a second voltage via the switch.

Abstract: The present disclosure provides a converter including a primary stage having a plurality of primary stage switches, a secondary stage having a plurality of secondary stage switches and a capacitor, and a controller that isolates the secondary stage from a second battery, and that controls switching of the plurality of primary stage switches and the plurality of secondary stage switches to provide a plurality of bursts of energy from a first battery to the capacitor to pre-charge the capacitor to a threshold voltage, wherein after an initial burst of the plurality of bursts having an initial duration, a subsequent burst of the plurality of bursts provided has a duration equal to a duration of a preceding burst plus a time period based on a voltage of the first battery.

Abstract: In at least one embodiment, a busbar assembly for a vehicle is provided. The assembly includes a printed circuit board (PCB), a first plate, a second plate, and a third plate. The first plate supported on the PCB and is configured to enable a first current to flow in a first direction. The second plate is supported on the PCB and includes a first portion positioned below the first plate to enable a second current to flow in a second direction. The third plate is on the PCB and is positioned below the second plate to enable the first current to flow in the first direction. The second current that flows through the second plate is increased through an effective cross-section of the second plate when the flow of the second current in the second direction is different than the flow of the first current in the first direction.

Abstract: In at least one embodiment, a busbar assembly for a vehicle is provided. The assembly includes a printed circuit board (PCB), a first plate, a second plate, and a third plate. The first plate supported on the PCB and is configured to enable a first current to flow in a first direction. The second plate is supported on the PCB and includes a first portion positioned below the first plate to enable a second current to flow in a second direction. The third plate is on the PCB and is positioned below the second plate to enable the first current to flow in the first direction. The second current that flows through the second plate is increased through an effective cross-section of the second plate when the flow of the second current in the second direction is different than the flow of the first current in the first direction.

Abstract: An electrical connector is described for electrically connecting an electrical component of a printed circuit board (PCB) to a power bus bar or a housing. The connector includes an electrically conductive element configured for attachment to a surface of the PCB, and a resiliently displaceable electrically conductive feature extending from the electrically conductive element and configured to contact a surface of the bus bar or housing. In response to contact with the surface of the bus bar or housing, the resiliently displaceable electrically conductive feature is urged toward the bus bar or housing to maintain contact therewith and establish an electrical connection between the bus bar or housing and the electrical component of the PCB.

Abstract: A high voltage power monitoring system includes a controller, a detector connected to the controller, and a generator connected to the detector and the controller. The generator may be configured to generate a plurality of test signals according to control signals generated via the controller. The generator may provide the test signals to the detector. The detector may be configured to provide the plurality of test signals to a test loop. The detector may be configured to simultaneously sense a first voltage, a second voltage, a first current, and a second current. The first voltage and the first current may correspond to a first test signal of the plurality of test signals. The second voltage and the second current may correspond to a returned version of the first test signal that has passed through the test loop.

Abstract: A high voltage power monitoring system includes a controller, a detector connected to the controller, and a generator connected to the detector and the controller. The generator may be configured to generate a plurality of test signals according to control signals generated via the controller. The generator may provide the test signals to the detector. The detector may be configured to provide the plurality of test signals to a test loop. The detector may be configured to simultaneously sense a first voltage, a second voltage, a first current, and a second current. The first voltage and the first current may correspond to a first test signal of the plurality of test signals. The second voltage and the second current may correspond to a returned version of the first test signal that has passed through the test loop.

Abstract: An on-board battery charging system for a plug-in electric vehicle has a charging unit for charging a high-voltage battery and a controller for controlling and managing current flow used to support charging related operations for the high-voltage battery. The controller may detect a connection between the on-board battery charging system and electric vehicle supply equipment (EVSE) and is configured to enter a sleep mode when a control pilot signal from the EVSE is either absent or indicative of a delayed charge mode. The charging system may include a wake-by-control pilot circuit operable to wake the controller from the sleep mode when the control pilot signal is detected and when the control pilot signal transitions from a non-zero static DC voltage to an active PWM signal.

Abstract: A vehicle interface is contemplated to be operable with an Electronic Vehicle Supply Equipment (EVSE) system and a vehicle charging system to facilitate vehicle charging related operations. The vehicle interface may include a noise compensation configured to facilitate compensating for noise within the reference signal resulting from the reference circuit. The vehicle interface may be configured to adapted to common mode interference and other influences resulting from connections between the vehicle interface and EVSE being referenced to earth ground and connections between the vehicle interface and other vehicle electronics being reference to a vehicle chassis ground.

Abstract: A safety guardian is operable to facilitate notifying an Electronic Vehicle Supply Equipment (EVSE) system whether a vehicle charging system is ready to accept energy. The safety guardian may be configured to facilitate control of a vehicle interface used to provide a reference voltage to the EVSE reflective of whether the charging system is ready to accept energy. The guardian may control the vehicle interface in the absence of a suitable control signal from the vehicle charging system in order to ensure the EVSE is notified when the vehicle charging system is not ready to accept energy.

Abstract: A vehicle interface is contemplated to be operable with an Electronic Vehicle Supply Equipment (EVSE) system and a vehicle charging system to facilitate vehicle charging related operations. The vehicle interface may include one or more switches and a charger controller configured to facilitate communications between the EVSE system and the vehicle charging system. The vehicle interface may be configured to adapted to common mode interference and other influences resulting from connections between the vehicle interface and EVSE being referenced to earth ground and connections between the vehicle interface and other vehicle electronics being reference to a vehicle chassis ground.

Abstract: A safety guardian is operable to facilitate notifying an Electronic Vehicle Supply Equipment (EVSE) system whether a vehicle charging system is ready to accept energy. The safety guardian may be configured to facilitate control of a vehicle interface used to provide a reference voltage to the EVSE reflective of whether the charging system is ready to accept energy. The guardian may control the vehicle interface in the absence of a suitable control signal from the vehicle charging system in order to ensure the EVSE is notified when the vehicle charging system is not ready to accept energy.

Abstract: A safety guardian operable to facilitate notifying an Electronic Vehicle Supply Equipment (EVSE) system whether a vehicle charging system is ready to accept energy. The safety guardian may be configured to facilitate control of a vehicle interface used to provide a reference voltage to the EVSE reflective of whether the charging system is ready to accept energy. The guardian may control the vehicle interface in the absence of a suitable control signal from the vehicle charging system in order to ensure the EVSE is notified when the vehicle charging system is not ready to accept energy.

Abstract: An isolated current-sensing system for use with a resistive current sense element includes an analog front-end configured to receive a voltage from the resistive current sense element, and to provide an analog output. A processing circuit receives the analog output, and provides a measurement signal indicative of the sensed current. An isolation circuit provides an isolation barrier, and is configured to pass the measurement signal. A programmable over-current protection alarm may be included, and configured to generate an alarm signal when the analog output exceeds a programmable threshold. The processing circuit may include a voltage-to-PWM converter.

Abstract: An on-board battery charging system for a plug-in electric vehicle has a charging unit for charging a high-voltage battery and a controller for controlling and managing current flow used to support charging related operations for the high-voltage battery. The controller may detect a connection between the on-board battery charging system and electric vehicle supply equipment (EVSE) and is configured to enter a sleep mode when a control pilot signal from the EVSE is either absent or indicative of a delayed charge mode. The charging system may include a wake-by-control pilot circuit operable to wake the controller from the sleep mode when the control pilot signal is detected and when the control pilot signal transitions from a non-zero static DC voltage to an active PWM signal.

Abstract: A vehicle interface is contemplated to be operable with an Electronic Vehicle Supply Equipment (EVSE) system and a vehicle charging system to facilitate vehicle charging related operations. The vehicle interface may include a noise compensation configured to facilitate compensating for noise within the reference signal resulting from the reference circuit. The vehicle interface may be configured to adapted to common mode interference and other influences resulting from connections between the vehicle interface and EVSE being referenced to earth ground and connections between the vehicle interface and other vehicle electronics being reference to a vehicle chassis ground.

Abstract: A vehicle interface is contemplated to be operable with an Electronic Vehicle Supply Equipment (EVSE) system and a vehicle charging system to facilitate vehicle charging related operations. The vehicle interface may include one or more switches and a charger controller configured to facilitate communications between the EVSE system and the vehicle charging system. The vehicle interface may be configured to adapted to common mode interference and other influences resulting from connections between the vehicle interface and EVSE being referenced to earth ground and connections between the vehicle interface and other vehicle electronics being reference to a vehicle chassis ground.

Abstract: A safety guardian operable to facilitate notifying an Electronic Vehicle Supply Equipment (EVSE) system whether a vehicle charging system is ready to accept energy. The safety guardian may be configured to facilitate control of a vehicle interface used to provide a reference voltage to the EVSE reflective of whether the charging system is ready to accept energy. The guardian may control the vehicle interface in the absence of a suitable control signal from the vehicle charging system in order to ensure the EVSE is notified when the vehicle charging system is not ready to accept energy.

Abstract: An isolated current-sensing system for use with a resistive current sense element includes an analog front-end configured to receive a voltage from the resistive current sense element, and to provide an analog output. A processing circuit receives the analog output, and provides a measurement signal indicative of the sensed current. An isolation circuit provides an isolation barrier, and is configured to pass the measurement signal. A programmable over-current protection alarm may be included, and configured to generate an alarm signal when the analog output exceeds a programmable threshold. The processing circuit may include a voltage-to-PWM converter.