Abstract: An electric vehicle charging system is provided. In some embodiments, the electric vehicle charging system can comprise an electric vehicle comprising a direct current to direct current (DC-DC) booster that boosts a first voltage to a second voltage of a battery of the electric vehicle, and a first insulation monitoring device (IMD) comprising an active symmetrization circuit. In various embodiments, the electric vehicle charging system can further comprise an electric vehicle supply equipment comprising a second IMD and an output voltage comprising the first voltage, wherein the first IMD is communicatively coupled to the second IMD, and wherein the first IMD adjusts a third voltage on a negative side of insulation resistance of the electric vehicle to a fourth voltage on a negative side of insulation resistance of the electric vehicle supply equipment.

Abstract: Embodiments relate to a system comprising: a first module. The first module comprises a power receiving module configured to receive an input power from an energy source. The system further comprises a second module. The second module comprises a power conversion module configured to convert the input power to an output power. The system further comprises a third module. The third module comprises a control module for configuring the first module or the second module to perform a charging operation or a discharging operation. The first module, the second module and the third module are functionally integrated in the system to perform multiple modes of the charging operation or the discharging operation. The third module controls an impedance of the input power and the output power in the second module.

Abstract: A circuit enabling precharge, active discharge and battery balancing operations in a single subcircuit is described. According to one or more embodiments, a circuit is provided comprising a first battery comprising a positive terminal coupled to a positive transmission line and a negative terminal coupled to a common node, wherein the positive transmission line comprises a first contactor, a second battery comprising a positive terminal coupled to the common node and a negative terminal coupled to a negative transmission line, wherein the negative transmission line comprises a second contactor, and a subcircuit coupled to the common node, to the positive transmission line, and to the negative transmission line.

Abstract: A converter system for transferring power, a vehicle including such a converter system and a method for transferring power in such a converter system. The converter system includes a first DC-DC module, a second DC-DC module and a first control unit. The first DC-DC module is connected to a first high voltage interface of a high voltage system and to a first low voltage interface of a low voltage system. The second DC-DC module is connected to a second high voltage interface of the high voltage system and to a second low voltage interface of the low voltage system. The first high voltage interface and the second interface are independent of each other. The first control unit is connected to the first DC-DC module and configured to supply power via the second DC-DC module in case of a failure in the first DC-DC module.

Abstract: The present disclosure relates to a converter system for transferring electric power, a vehicle comprising such a converter system and a method for transferring electric power. The converter system comprises a first DC/DC converter module, a second DC/DC converter module and a control unit. The first DC/DC converter module is connectable to a first high voltage system and at least to a first low voltage system. The second DC/DC converter module is connectable to a second high voltage system and at least to the first low voltage system. The first DC/DC converter module comprises at least a first main DC/DC converter unit and a first micro DC/DC converter unit. The second DC/DC converter module comprises at least a second micro DC/DC converter unit. The first micro DC/DC converter unit and the second micro DC/DC converter unit are connectable via a first bidirectional switch unit.

Abstract: A battery control assembly for a battery system. The battery control assembly includes a plurality of cell-level control units, each including a cell-level switching unit being operable as a cell-level inverter. The plurality of cell-level control units are arranged in three control unit strings and the cell-level control units of each control unit string are electrically connected in series. First ends of each control unit string are electrically connected to a corresponding AC charging terminal. Second ends of the control unit strings are electrically connected in series via a first end switch and a second end switch. Moreover, at least one of the control unit strings includes an inner connection terminal. Furthermore, an electric drivetrain for an electric vehicle having such a battery control assembly is presented.

Abstract: Embodiments relate to a system comprising: a first module. The first module comprises a power receiving module configured to receive an input power from an energy source. The system further comprises a second module. The second module comprises a power conversion module configured to convert the input power to an output power. The system further comprises a third module. The third module comprises a control module for configuring the first module or the second module to perform a charging operation or a discharging operation. The first module, the second module and the third module are functionally integrated in the system to perform multiple modes of the charging operation or the discharging operation. The third module controls an impedance of the input power and the output power in the second module.

Abstract: A converter system for transferring power, including a first high voltage DC-DC module, a second high voltage DC-DC module, and a controller. The high voltage DC-DC modules are electrically separated, the first high voltage DC-DC module is connected to a first high voltage interface of a high voltage system and to a first low voltage interface of a low voltage system, and being of a first DC-DC module type, and the second high voltage DC-DC module is connected to a second high voltage interface of the high voltage system and to a second low voltage interface of the low voltage system, and being of a second different DC-DC module type. The controller is configured to control power supply via one of the high voltage DC-DC modules to the low voltage system in case of failure affecting the other one of the high voltage DC-DC modules.

Abstract: Systems and techniques that facilitate smartcell battery architectures and methodologies are provided. In various embodiments, a battery can comprise a positive terminal and a negative terminal. In various aspects, the battery can further comprise a set of smart battery cells that are serially coupled between the positive terminal and the negative terminal and that respectively comprise full-bridges. In various instances, the full-bridges can have charge states, discharge states, and/or by-pass states. When some of the set of smart battery cells have full-bridges in the charge state, and when others of the set of smart battery cells have full-bridges in the discharge state or by-pass state, the battery can be charged by a supplied voltage that is less than the sum of individual voltages of all of the set of smart battery cells.

Abstract: A method for vehicle-to-vehicle charging for electric vehicles, including: controlling a three phase bi-directional on-board charger of a first electric vehicle to provide a DC power from an energy storage system of the first electric vehicle at a first terminal L1 and a second terminal L2 of the three phase bi-directional on board-charger of the first electric vehicle; transferring the DC power from the first terminal L1 of the first electric vehicle to an energy storage system of a second electric vehicle, and from the second terminal L2 of the first electric vehicle to an energy storage system of a third electric vehicle.

Abstract: An electric vehicle charging system is provided. In some embodiments, the electric vehicle charging system can comprise an electric vehicle comprising a direct current to direct current (DC-DC) booster that boosts a first voltage to a second voltage of a battery of the electric vehicle, and a first insulation monitoring device (IMD) comprising an active symmetrization circuit. In various embodiments, the electric vehicle charging system can further comprise an electric vehicle supply equipment comprising a second IMD and an output voltage comprising the first voltage, wherein the first IMD is communicatively coupled to the second IMD, and wherein the first IMD adjusts a third voltage on a negative side of insulation resistance of the electric vehicle to a fourth voltage on a negative side of insulation resistance of the electric vehicle supply equipment.

Abstract: A method can comprise determining, by a first controller comprising a processor, of a first vehicle, a first voltage rating of a first battery of the first vehicle and a state of charge of the first battery. In various embodiments, the method can further comprise determining, by the first controller, based on an output of a second controller of a second vehicle, a second voltage rating of a second battery of the second vehicle and a state of charge of the second battery. In further embodiments, the method can further comprise in response to a determination, by the first controller, that the first voltage rating matches the second voltage rating, transferring, by the first controller, power from the first battery to the second battery, wherein the state of charge of the first battery is greater than the state of charge of the second battery.

Abstract: An electric vehicle pre-charging circuit is provided. In one or more embodiments, the electric vehicle pre-charging circuit can comprise a first contactor located on a positive bus between a load and a battery. In various embodiments, the electric vehicle pre-charging circuit can comprise a second contactor located on a negative bus between the load and the battery. In further embodiments, the electric vehicle pre-charging circuit can comprise an on-board charger connected to the positive bus and the negative bus on a battery-side of the positive bus and a battery-side of the negative bus, wherein a phase wire connects the on-board charger to the positive bus on a load-side of the positive bus, and wherein a neutral wire connects the on-board charger to the negative bus on a load-side of the negative bus.

Abstract: An electric vehicle charging system is provided. In some embodiments, the electric vehicle charging system can comprise a three-phase electric motor and an inverter. The inverter can be connected to the three-phase electric motor and to a battery. In various implementations, the inverter can comprise a switch and a capacitor. In further implementations, the switch can close to precharge a capacitor to a defined fraction of a voltage of the battery.

Abstract: An electric vehicle battery system is provided. In some embodiments, the electric vehicle battery system can comprise a battery pack comprising a first battery and a second battery. In various embodiments, a first bidirectional direct current to alternating current (DC-AC) converter can be electrically coupled to the first battery and to a first bidirectional high-voltage (HV) alternating current to direct current (AC-DC) converter. In various implementations, a second bidirectional DC-AC converter can be coupled to the second battery and to a second bidirectional HV AC-DC converter. In further embodiments, and a power factor correction AC-DC module can be electrically coupled to the first bidirectional HV AC-DC converter via a first switch and the second bidirectional HV AC-DC converter via a second switch.

Abstract: An electric vehicle charging system is provided. In some embodiments, the electric vehicle charging system can comprise an electric motor drive system comprising a three-phase electric motor and an inverter. In various embodiments, a negative cable can be connected to an electric vehicle inlet and a battery. In further embodiments, a booster charging cable can be connected to a star-point of the three-phase electric motor and to a positive pole of the electric vehicle inlet, wherein the booster charging cable bypasses a connection between the positive pole and the battery.

Abstract: Power and controller integrated circuits for electric vehicle applications are enabled. For example, a system can comprise a plurality of battery cells, and a plurality of application specific integrated circuits (ASICs) electrically coupled to the plurality of battery cells, wherein one or more ASICs of the plurality of ASICs comprises a respective power ASIC, and wherein the ASICs comprise respective bidirectional direct current to alternating current (DC-AC) converters and charge or discharge the plurality of battery cells.

Abstract: Power and controller integrated circuits for electric vehicle applications are enabled. For example, a system can comprise a plurality of battery cells, and a plurality of application specific integrated circuits (ASICs) electrically coupled to the plurality of battery cells, wherein one or more ASICs of the plurality of ASICs comprises a respective control ASIC, and wherein the ASICs comprise respective bidirectional direct current to alternating current (DC-AC) converters and charge or discharge the plurality of battery cells.

Abstract: A converter system for transferring power, a vehicle including such a converter system and a method for transferring power in such a converter system. The converter system includes a first DC-DC module, a second DC-DC module and a first control unit. The first DC-DC module is connected to a first high voltage interface of a high voltage system and to a first low voltage interface of a low voltage system. The second DC-DC module is connected to a second high voltage interface of the high voltage system and to a second low voltage interface of the low voltage system. The first high voltage interface and the second interface are independent of each other. The first control unit is connected to the first DC-DC module and configured to supply power via the second DC-DC module in case of a failure in the first DC-DC module.

Abstract: A converter system for transferring power including a first converter unit, a second converter unit and a control unit. The first converter unit and the second converter unit are connected in parallel. The first converter unit is connected to a high voltage system via a first series switch unit and the second converter unit is connected to the high voltage system via a second series switch unit. The first converter unit is connected to a low voltage system via a third series switch unit and the second converter unit is connected to the low voltage system via a fourth series switch unit. The control unit is configured to disconnect the first series switch unit and high voltage system in case of a failure in the first converter unit or to disconnect the second series switch unit and high voltage system in case of a failure in the second converter unit.