Abstract: A traction battery arrangement includes a string of cells and bus bars, a coil wrapped around one of the bus bars, and a controller. The controller drives AC current over a swept range of frequencies into the one of the bus bars via the coil, and receives voltage data from at least one of the cells that results from the AC current.

Abstract: A circuit is selectively attachable to one of a positive terminal and negative terminal of a traction battery cell via a transistor. The circuit has a current sensor disposed in series with an inductor. A controller operates the transistor such that electrical current from the one of the positive terminal and negative terminal is inverted within the circuit, and while an inductor charge rate is less than a predetermined charge value, inhibits charge and discharge of the traction battery cell.

Abstract: A power control arrangement for a vehicle includes a bi-directional DC/DC converter and one or more controllers. The one or more controllers, after a request to activate the vehicle, command the bi-directional DC/DC converter to charge a DC link capacitor electrically between main contactors and the bi-directional DC/DC converter to target value without connecting a resistor in parallel with one of the main contactors and before closing all of the main contactors.

Abstract: A vehicle battery system includes a traction battery having positive and negative terminals, and resistive circuitry including a first resistor electrically connected between one of the terminals and a common ground, a switch, and a second resistor that can be selectively electrically connected between the one of the terminals and the first resistor via the switch. The vehicle battery system also includes a controller that opens and closes the switch, and inhibits charge of the traction battery according to changes in voltage across the second resistor due to opening and closing of the switch.

Abstract: A circuit is selectively attachable to one of a positive terminal and negative terminal of a traction battery cell via a transistor. The circuit has a current sensor disposed in series with an inductor. A controller operates the transistor such that electrical current from the one of the positive terminal and negative terminal is inverted within the circuit, and while an inductor charge rate is less than a predetermined charge value, inhibits charge and discharge of the traction battery cell.

Abstract: A power control arrangement for a vehicle includes a bi-directional DC/DC converter and one or more controllers. The one or more controllers, after a request to activate the vehicle, command the bi-directional DC/DC converter to charge a DC link capacitor electrically between main contactors and the bi-directional DC/DC converter to a target value without connecting a resistor in parallel with one of the main contactors and before closing all of the main contactors.

Abstract: A power system includes a battery and a controller. The controller inhibits charge of the battery according to voltage or current values sensed before and after contactors electrically connected to the battery are commanded to open and indicating that a leakage resistance associated with one of the contactors increases after the one of contactors is commanded to open, and a duration of a continuous voltage drop across another of the contactors after the another of the contactors is commanded to open exceeds a threshold.

Abstract: An electrified vehicle, system, and control method include a traction battery having a first plurality of cells and a second plurality of cell monitoring circuits each having an associated at least one of the first plurality of cells, and a controller configured to control the cell monitoring circuits to measure voltage of the associated cells at an initial frequency until a state of charge (SOC) of the traction battery is established, and to measure voltage of the associated cells at a second frequency based on the SOC after the SOC is established to reduce heat generation of the cell monitoring circuits. The cell monitoring circuits may be controlled to asynchronously measure associated cell voltage and/or to reduce voltage/current conversion time when delta cell voltage and battery pack current are below respective thresholds.

Abstract: A vehicle includes an electrified propulsion system powered by a traction battery. The vehicle also includes an electrical distribution system (EDS) to pass current to and from the traction battery. The EDS is provided with at least one flexible electrical distribution component (FEDC) including a plurality of individual conductor paths. At least one of the individual conductor paths defines a typical width and a reduced width narrowed portion sized to operate as a fuse and thereby break an electrical circuit of the at least one individual conductor path in response to heat generated from conducting an electrical current greater than a predetermined threshold.

Abstract: A vehicle assembly includes, among other things, a battery array, and an identifier that is associated with the battery array. The identifier is readable by a control module of an electrified vehicle when the battery array is in an installed position within the electrified vehicle.

Abstract: A vehicle battery system has a battery including a plurality of series connected cells, a bus bar electrically connected between an adjacent pair of the series connected cells, and circuitry. The circuitry injects a sinusoidal current waveform through the bus bar, obtains a magnitude of a sinusoidal voltage waveform contained by an overall voltage of the bus bar that is caused by the sinusoidal current waveform from a sampled and filtered version of the overall voltage and digital data defining the sinusoidal current waveform, obtains a resistance of the bus bar from the magnitude of the sinusoidal voltage waveform and a measured magnitude of the sinusoidal current waveform, and obtains a magnitude of current through the battery from a DC portion of a spectrum of the overall voltage and the resistance of the bus bar.

Abstract: A vehicle includes an electrified propulsion system powered by a traction battery. The vehicle also includes an electrical distribution system (EDS) to pass current to and from the traction battery. The EDS is provided with at least one flexible electrical distribution component (FEDC) including a plurality of individual conductor paths. At least one of the individual conductor paths defines a typical width and a reduced width narrowed portion sized to operate as a fuse and thereby break an electrical circuit of the at least one individual conductor path in response to heat generated from conducting an electrical current greater than a predetermined threshold.

Abstract: A battery system includes a cell, and an integrated circuit and flexible circuitry on and electrically isolated from a container of the cell. The flexible circuitry is arranged with the cell and integrated circuit to form a dipole antenna that wirelessly transmits signals from the integrated circuit.

Abstract: A battery system has a cell, a substrate mounted on the cell, and monitoring circuitry on the substrate and exclusively powered by the cell. The battery system also has a switch on the substrate electrically between the cell and monitoring circuit, and control circuitry on the substrate. The control circuitry, responsive to a value of a parameter of the cell measured by the monitoring circuitry falling outside a predefined range, opens the switch to electrically disconnect the monitoring circuit from the cell.

Abstract: A vehicle includes a traction battery, circuitry including a switch and a capacitor, and a monitoring chip configured to draw power from a cell of the traction battery via the circuitry responsive to the switch being closed. The circuitry is configured to open the switch to disconnect the cell from the chip and power the chip via the capacitor for a predetermined period. Powering the chip via the capacitor prevents power down of the chip during the predetermined period. The circuitry opens the switch responsive to engine cranking.

Abstract: A system for a vehicle includes a controller and contactor arranged to close responsive to current magnitude through a coil thereof exceeding a first threshold. The controller, following a request to open the contactor, applies current to the coil at a magnitude less than the first threshold for a duration, and responsive to peak current through the contactor during the duration being less than a second threshold, prevents start of the vehicle.

Abstract: A vehicle battery system has a battery including a plurality of series connected cells, a bus bar electrically connected between an adjacent pair of the series connected cells, and circuitry. The circuitry injects a sinusoidal current waveform through the bus bar, obtains a magnitude of a sinusoidal voltage waveform contained by an overall voltage of the bus bar that is caused by the sinusoidal current waveform from a sampled and filtered version of the overall voltage and digital data defining the sinusoidal current waveform, obtains a resistance of the bus bar from the magnitude of the sinusoidal voltage waveform and a measured magnitude of the sinusoidal current waveform, and obtains a magnitude of current through the battery from a DC portion of a spectrum of the overall voltage and the resistance of the bus bar.

Abstract: A vehicle assembly includes, among other things, a battery array, and an identifier that is associated with the battery array. The identifier is readable by a control module of an electrified vehicle when the battery array is in an installed position within the electrified vehicle.

Abstract: A vehicle has a battery including a plurality of cells connected in series, and a battery management integrated circuit including a plurality of inputs each being directly electrically connected to a terminal of one of the cells via an electrical path that includes a thse and a resistor connected in series. The battery management integrated circuit farther includes a top input directly electrically connected to a positive output of the battery and configured to receive power from the battery that is defined by a current having a magnitude that is at least an order of magnitude greater than current received by the inputs and a voltage equal to a sum of voltages of all the cells.

Abstract: A system for monitoring battery cells of a battery includes a capacitor, a processor, and a controller. The controller is configured to connect the capacitor with a first battery cell to charge the capacitor to a voltage of the first battery cell and then (i) connect the capacitor with a second battery cell to form a circuit having an output that is a voltage difference of the capacitor and the second battery cell and (ii) connect the output to the processor for the processor to measure the voltage difference. The voltage difference is the voltage difference between the first battery cell and the second battery cell.