Abstract: Control strategies for an electric vehicle battery system that incorporate active cell temperature balancing are described. In an example, a method comprises employing, by a system operatively coupled to at least one processor, a smartcell battery system to supply power to one or more electrical systems of a vehicle, the smart cell battery system comprising a plurality of battery cells. The method further comprises controlling, by the system, operations of the battery cells in accordance with a control protocol that results in increasing a temperature of a subset of the battery cells based on the temperature being below a threshold temperature. In an example, the control protocol can include circulating current between the subset of battery cells and/or other battery cells excluded from the subset, actively discharging the subset of battery cells and redistributing the power to other battery cells excluded from the subset, and others.

Abstract: Compact designs for a printed circuit board (PCB) device of a smartcell battery system are provided. The design includes a number of features, including a direct current to direct current (DCDC) converter having a compact, low-cost design that can provide significant power output despite operating at low voltages. In an example, the DCDC converter includes a number of features, including but not limited to, a closed loop for the primary side winding, integrated leakage inductance, a planar integrated transformer, a modular exchangeable secondary side winding, and two variants of secondary side rectification depending on the desired output voltage. The components of the DCDC converter respectively have planar or substantially planar geometries that enable the DCDC converter to have a compact, planar geometry with an overall thickness of about 1.0 millimeter.

Abstract: Compact designs for a printed circuit board (PCB) device of a smartcell battery system are provided. The design includes a number of features, including a scalable, high performance power module. The power module includes a number of power switches (e.g., metal oxide semiconductor field effect transistors (MOSFETs)), that have low resistance which can control very high currents of a direct to direct (DCDC) converter and an H-bridge of the PCB. The power module is sandwiched between the input and output busbars positioned on opposite surfaces of the primary, planar substrate of the PCB in order to create the shortest possible current transfer distance.

Abstract: Systems, devices, computer-implemented methods, and/or computer program products that can facilitate optimized control of an electric motor of an electric vehicle using a smartcell battery system are addressed. In an example, the system uses a central controller that wirelessly communicates with local controllers connected to clusters of battery cells configured to generate a three-phase current output to control the motor torque. The central controller and the local controllers perform a main control loop to control the three-phase current output with an update frequency of about 1 kHz. A local control loop with an update frequency of about 10 kHz is further implemented by the local controllers within the main control loop to detect and minimize disturbances in the motor operation using estimated local control information.

Abstract: Systems, devices, computer-implemented methods, and/or computer program products that can facilitate optimized control of an electric motor of an electric vehicle using a smartcell battery system are addressed. In an example, the system uses a central controller that wirelessly communicates with local controllers connected to clusters of battery cells configured to generate a three-phase current output to control the motor torque. The central controller and the local controllers perform a main control loop to control the three-phase current output with an update frequency of about 1 kHz. A local control loop with an update frequency of about 10 kHz is further implemented by the local controllers within the main control loop to detect and minimize disturbances in the motor operation using estimated local control information.

Abstract: According to an embodiment, it is a method comprising, requesting a first cell level inverter unit to enable a first discharge current and a second cell level inverter unit to disable a second discharge current, and requesting the second cell level inverter unit to enable the second discharge current and the first cell level inverter unit to disable the first discharge current, and wherein the method is operable for operating a battery system comprising a plurality of battery cells comprising a first single battery cell and a second single battery cell; and a plurality of cell level inverter units comprising the first cell level inverter unit and the second cell level inverter unit; and wherein each of a cell level inverter unit of the plurality of cell inverter units being electrically coupled to at least a single battery cell out of the plurality of battery cells.