Volvo Car Corporation

Narendar Rao Gannamaneni

Arsam Golriz

Lars Johan Henrik Sjöstedt

Ali Dareini

Jonas Forssell

Sumegh Kadam

Hicham Sadoun

Avishek Kumar Mohanty

Robert Eriksson

Nikitas Sidiropoulos

Markus Ekström

Torbjorn Larsson

Jonas Björkholtz

Ustun Saglam

Andreas Lars Bertil Ådahl

Niklas Smith

Yafan Zhang

Nils Anders Lasson

Johan Sjöstedt

Andreas Ådahl

Lars Johan Henrik SJÖSTEDT

Andreas ÅDahl

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.

Controller integrated circuit for electric vehicle applications

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.

Charging system of an electric vehicle using traction inverter and electric machine

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.

Battery including smart battery cells with full-bridge configured for charge/discharge and bypass states, and method thereof

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.

Voltage conversion system for battery electric powertrain with common minus-pole

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.

Pre-charging using an on-board charger and electric-vehicle high-voltage architecture

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.

Vehicle-to-vehicle charging

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.

On-board charger and DC-DC converter architecture for balancing of voltages or currents between batteries in electric vehicle battery systems

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 Land a second terminal Lof the three phase bi-directional on board-charger of the first electric vehicle; transferring the DC power from the first terminal Lof the first electric vehicle to an energy storage system of a second electric vehicle, and from the second terminal Lof the first electric vehicle to an energy storage system of a third electric vehicle.

Method and system for vehicle-to-vehicle charging of electric vehicles

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. The control unit is configured to transfer the electric power from the first high voltage system to the first low voltage system via the first micro DC/DC converter unit, if the first main DC/DC converter unit is deactivated. The control unit is further configured to open the first bidirectional switch unit to transfer the electric power from the second high voltage system to the first low voltage system via the second micro DC/DC converter unit, if the first main DC/DC converter unit is deactivated and the first micro DC/DC converter unit has a failure.

Converter system for transferring electric power

The invention relates to controlling an on-board charger for a battery of an electric vehicle to provide a more flexible output DC voltage range by adjusting a turn ratio of a transformer circuit to selectively integrate or exclude one of two winding portions of a primary winding of the transformer circuit.

On-board charger for a battery of an electric vehicle

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.

Power integrated circuit for electric vehicle applications

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.

Battery control assembly for a battery system and electric drivetrain for an electric vehicle

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.

Active symmetrization via insulation monitoring for electrical vehicle interoperability with charging stations

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.

Integrated power conversion topology for electric vehicles

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.

Growing community of inventors

Gothenburg, Sweden

Narendar Rao Gannamaneni