A control device of a power supply circuit includes processing circuitry. The processing circuitry includes a state-of-charge calculator and a target calculator. The state-of-charge calculator calculate a state of charge of the first battery. The target calculator calculates a target voltage range. When an output voltage of the first battery detected by a voltage sensor cannot be acquired and an acquisition failure occurs, after the occurrence of the acquisition failure, the state-of-charge calculator is configured to obtain the state of charge of the first battery, as a held state-of-charge, that was calculated before the occurrence of the acquisition failure. When a pre-charge process is performed in a state in which the acquisition failure is occurring, the target calculator is configured to calculate an estimated output voltage of the first battery from the held state-of-charge and calculate the target voltage range based on the estimated output voltage.

A controller (1) forms an insulation measurement path and turns on a third switch connected in parallel to a capacitor, (2) after a lapse of a first time period turns off the third switch, and (3) detects an insulation abnormality based on a voltage of the capacitor measured after a lapse of a second time period after the turning off of the third switch.

A fuel cell system includes a fuel cell stack, an oxidizing gas supply system, a cooling medium circulation pump, a stack temperature acquisition unit, and a control unit. After a first time point when a change in an acquisition temperature turns from downward to upward after the change in the acquisition temperature turns from upward to downward for the first time after the start of the warm-up operation processing, the control unit sets a decrease speed in cases of decreasing a rotational speed of the cooling medium circulation pump to a smaller value than a value set before the first time point.

A battery management device that manages a battery includes: multiple voltage detection circuits each connected to a corresponding one of a plurality of battery cells; and multiple discharge circuits each connected to a corresponding one of the battery cells. The battery management device causes the battery cell whose voltage difference from a reference voltage is equal to or greater than a predetermined first threshold and less than a second threshold that is greater than the first threshold to be discharged while a system of the vehicle is stopped, and causes the battery cell whose voltage difference is equal to or greater than the second threshold to be discharged at least either while the system is stopped or while the system is in operation.

A vehicle includes control pilot circuitry, connected with a charge port, that carries a control pilot signal from electric vehicle supply equipment, and a controller that exits a sleep mode and increases power consumption responsive to changes in the control pilot signal while a plug of the electric vehicle supply equipment is mated with the charge port and an accumulated time associated with the changes remains less than a predefined value.

The present invention relates to a battery arrangement for an electrically powered industrial vehicle. The battery arrangement comprises a battery and ancillary equipment arranged to connect the battery to the vehicle. The battery is removably connected to the vehicle and comprises a current sensor. The battery is in a first state (A) when a measured current out from the battery exceeds a predetermined first current level. In the first state (A) the battery is prevented from turning power off to the vehicle. The battery is in a second state (B) when a measured current out from the battery is below a predetermined first current level for a predetermined first period of time. In the second state (B) the battery is allowed to turn power off to the vehicle.

A vehicle control device for a vehicle includes a processor. The vehicle includes a first battery, a second battery, an auxiliary load powered by the second battery, and a DC-to-DC converter configured to supply electric power from the first battery to either the second battery or the auxiliary load, or to both of the second battery or the auxiliary load. The processor is configured to: determine the state of a start switch and the boarding state of the vehicle; acquire the voltage of the second battery; and when the processor determines that the vehicle is in a non-started on-board state, determine based on the voltage of the second battery an order in which the DC-to-DC converter and the auxiliary load are driven. The non-started on-board state is a state in which the start switch is off and a user is presumed to be in the vehicle.

A vehicle charging system includes a vehicle propelled by an electric machine powered by a chargeable energy storage system. The charging system also includes a controller programmed to predict at least one upcoming plug-in event based on historical charging data, and define a plug-in routine based on a plurality of upcoming plug-in events. The controller is also programmed to set a charging schedule to coincide with the plug-in routine such that a target state of charge (SOC) is achieved at a conclusion of each of the plurality of upcoming plug-in events. Each target SOC corresponding to a plug-in event is based on minimizing a charging energy cost of the plug-in routine and an expected energy depletion ahead of a next subsequent plug-in event.

Methods and system are described for changing a driveline gear range from a higher gear range to a lower gear range. The driveline may include two electric machines and four clutches in a four wheel drive configuration. The methods and systems permit a driveline to change from a higher gear range to a lower gear range without stopping a vehicle.

Presented are control systems for operating rechargeable electrochemical devices, methods for making/using such systems, and motor vehicles with intelligent battery pack charging and charging behavior feedback capabilities. A method of operating a rechargeable battery includes an electronic controller receiving battery data from a battery sensing device indicative of a battery state of charge (SOC). Using this battery data, the controller determines a number of low SOC excursions at which the battery SOC is below a predefined low SOC threshold and a number of high SOC excursions at which the battery SOC exceeds a predefined high SOC threshold. The controller then determines if the number of low SOC excursions exceeds a predefined maximum allowable low excursions and/or the number of high SOC excursions exceeds a predefined maximum allowable high excursions. If so, the controller responsively commands a resident subsystem to execute a control operation that mitigates degradation of the rechargeable battery.