Abstract: A drive system includes an engine as a drive source, a lead storage battery that is charged using the engine as a motive power source, a starter that starts up the engine by being driven by electric power from the lead storage battery, and a battery sensor that measures an inter-terminal voltage of the lead storage battery. A control device that is applied to the drive system temporarily stops the engine when a temporary stop condition is satisfied, and starts up the engine again when a discharge amount of the lead storage battery in a period of the temporary stop is larger than a discharge upper limit amount. When an inrush voltage is equal to or lower than a restraint threshold, the discharge upper limit amount is set so as to be smaller than when the inrush voltage is higher than the restraint threshold.

Abstract: A drive system includes an engine as a drive source, a lead storage battery that is charged using the engine as a motive power source, a starter that starts up the engine by being driven by electric power from the lead storage battery, and a voltage sensor that measures an inter-vehicle voltage of the lead storage battery. A control device that is applied to the drive system determines that the battery has been degraded, when a voltage difference between a first battery start-up voltage and a second battery start-up voltage is larger than a preset degradation determination threshold, the first battery start-up voltage being measured by the voltage sensor when the starter is driven, the second battery start-up voltage being measured by the voltage sensor when the starter is driven at a different timing from a timing when the first battery start-up voltage is measured.

Abstract: A drive system includes an engine as a drive source, a lead storage battery that is charged using the engine as a motive power source, a starter that starts up the engine by being driven by electric power from the lead storage battery, and a battery sensor that measures an inter-terminal voltage of the lead storage battery. A control device that is applied to the drive system temporarily stops the engine when a temporary stop condition is satisfied, and starts up the engine again when a discharge amount of the lead storage battery in a period of the temporary stop is larger than a discharge upper limit amount. When an inrush voltage is equal to or lower than a restraint threshold, the discharge upper limit amount is set so as to be smaller than when the inrush voltage is higher than the restraint threshold.

Abstract: A drive system includes an engine as a drive source, a lead storage battery that is charged using the engine as a motive power source, a starter that starts up the engine by being driven by electric power from the lead storage battery, and a voltage sensor that measures an inter-vehicle voltage of the lead storage battery. A control device that is applied to the drive system determines that the battery has been degraded, when a voltage difference between a first battery start-up voltage and a second battery start-up voltage is larger than a preset degradation determination threshold, the first battery start-up voltage being measured by the voltage sensor when the starter is driven, the second battery start-up voltage being measured by the voltage sensor when the starter is driven at a different timing from a timing when the first battery start-up voltage is measured.

Abstract: An electric power supply device includes first and second batteries respectively supplying electric power to a plurality of load instruments mounted on a vehicle, an electric power generator capable of charging the first battery and the second battery by regenerative electric power generation, and control means for controlling the electric power generator so that a charging electric power amount of at least one of the first battery and the second battery based on the regenerative electric power generation is suppressed in a case where at least one of a high-load instrument and a backup target instrument is present among the plurality of load instruments and the electric power generator is performing the regenerative electric power generation during the deceleration of the vehicle.

Abstract: A power supply system includes a power generator that charges a secondary battery and a electronic control unit configured to causes the power generator to perform regenerative power generation and supply the regenerated power to the secondary battery to charge the secondary battery, cause the power generator to perform fuel power generation using power of an internal combustion engine on the basis of a power generation voltage which is set by feedback control based on a state of charge of the secondary battery and to supply the generated power to the secondary battery to charge the secondary battery, and set a lower-limit voltage for the fuel power generation to a voltage at which an amount of injected fuel in the internal combustion engine is minimized depending on an amount of the regenerated power supplied to the secondary battery.

Abstract: A power supply control system includes a first controller that performs auxiliary-machine power reduction control for reducing electric power consumed by auxiliary machines, a second controller that performs high-voltage power generation control for making the generated voltage of the generator higher than the voltage set during the auxiliary-machine power reduction control, a frequency determining unit that determines whether the frequency of switching between the auxiliary-machine power reduction control and the high-voltage power generation control becomes equal to or higher than a predetermined frequency, and a lower-limit voltage setting unit that sets a lower-limit voltage of the generator under the auxiliary-machine power reduction control to a higher value when the frequency of switching is equal to or higher than the predetermined frequency, than when the frequency of switching is lower than the predetermined frequency.

Abstract: There is a need to predict a driving environment with high responsiveness by a simple configuration. There is provided a driving environment prediction device that predicts a driving environment of a vehicle that causes a vehicle stop. The driving environment prediction device comprises: a first vehicle stop time rate calculator which is configured to calculate a rate of vehicle stop time in a first period, as a first vehicle stop time rate (shorter-period vehicle stop time rate); a second vehicle stop time rate calculator which is configured to calculate a rate of vehicle stop time in a second period which is longer than the first period, as a second vehicle stop time rate (longer-period vehicle stop time rate); and a driving environment predictor which is configured to predict the driving environment, based on the shorter-period vehicle stop time rate and the longer-period vehicle stop time rate.

Abstract: A power supply apparatus includes a first battery, a second battery, and an ECU configured to determine whether the following conditions i), ii), and iii) are satisfied: i) a degree of deterioration of the second battery is lower than a first threshold; ii) a state-of-charge of the second battery is lower than a second threshold; and iii) the state-of-charge is equal to or higher than a third threshold. The second threshold is higher by a prescribed value than a lowest allowable value of the state-of-charge at which the second battery can function as a backup power supply. The third threshold corresponds to the lowest allowable value. When determining that the conditions i), ii) and iii) are all satisfied, the ECU executes single-battery-using control in which regeneration control using the regenerative electric power is executed with use of the first battery and the second battery is not used for regeneration control.

Abstract: A charging control unit is used in a system having an engine, an electric power generator, and a battery charged by electric power generated by the electric power generator and being capable of executing stop control for prohibiting the engine from restarting in a state where the engine is stopped.

Abstract: In a vehicle has a generator and a secondary battery, when a power storage ratio of the secondary battery becomes less than or equal to a first threshold value, until the power storage ratio becomes a second threshold value, which is greater than the first threshold value, a charging control apparatus sets an upper limit of power generation voltage of the generator other than during deceleration of the vehicle, to be higher than an upper limit of the power generation voltage other than during deceleration of the vehicle when the power storage ratio is greater than the second threshold value. The charging control apparatus is provided with: a changing device configured to change the second threshold value so that the second threshold value approaches the first threshold value when a discharge-charge tendency of the secondary battery based on past data associated with the power storage ratio is a charge tendency.

Abstract: An auxiliary current amount that is used in an auxiliary that is mounted in a vehicle is calculated. A stop time ratio of the vehicle is calculated based on a running history of the vehicle, and an estimated stop time of the vehicle that is estimated based on the stop time ratio is calculated. An SOC threshold is set based on an estimated consumption current amount that is obtained from the estimated stop time and the auxiliary current amount. A generator that is mounted in the vehicle is operated such that a value of a storage state of the battery recovers to become larger than the SOC threshold when the value of the storage state of the battery is smaller than the SOC threshold.

Abstract: A power supply control system includes a first controller that performs auxiliary-machine power reduction control for reducing electric power consumed by auxiliary machines, a second controller that performs high-voltage power generation control for making the generated voltage of the generator higher than the voltage set during the auxiliary-machine power reduction control, a frequency determining unit that determines whether the frequency of switching between the auxiliary-machine power reduction control and the high-voltage power generation control becomes equal to or higher than a predetermined frequency, and a lower-limit voltage setting unit that sets a lower-limit voltage of the generator under the auxiliary-machine power reduction control to a higher value when the frequency of switching is equal to or higher than the predetermined frequency, than when the frequency of switching is lower than the predetermined frequency.

Abstract: A charge control device for a battery is mounted on a vehicle, the vehicle comprises an engine, a generator driven with power of the engine, the battery configured to be chargeable with electric power generated by the generator, and auxiliary machinery operated with electric power of the battery.

Abstract: A vehicular control apparatus performs control of enabling idle operation of an internal combustion engine that generates a motive power applied to a driving wheel of a vehicle if a vehicle speed of the vehicle is lower than a predetermined vehicle speed that is set in advance, and disabling idle operation of the internal combustion engine if the vehicle speed of the vehicle is equal to or higher than the predetermined vehicle speed, when the vehicle is in a state other than an acceleration running state. Accordingly, the vehicular control apparatus achieves an effect of making it possible to suppress the consumption of fuel.

Abstract: A power supply apparatus includes a first battery, a second battery, and an ECU configured to determine whether the following conditions i), ii), and iii) are satisfied: i) a degree of deterioration of the second battery is lower than a first threshold; ii) a state-of-charge of the second battery is lower than a second threshold; and iii) the state-of-charge is equal to or higher than a third threshold. The second threshold is higher by a prescribed value than a lowest allowable value of the state-of-charge at which the second battery can function as a backup power supply. The third threshold corresponds to the lowest allowable value. When determining that the conditions i), ii) and iii) are all satisfied, the ECU executes single-battery-using control in which regeneration control using the regenerative electric power is executed with use of the first battery and the second battery is not used for regeneration control.

Abstract: A charging apparatus is mounted on a vehicle having a plurality of batteries and a power generating device. The charging apparatus is provided with a controller (i) configured to obtain power accumulation ratios of the plurality of batteries, (ii) configured to determine whether or not each of obtained power accumulation ratios is in an appropriate range corresponding to each of the plurality of batteries, and (iii) configured to control the power generating device so that generated voltage of the power generating device is in an overlap range, if it is determined that power accumulation ratio of one battery of the plurality of batteries is greater than an upper limit of the appropriate range of the one of battery and if the power generating device performs the power regeneration upon deceleration of the vehicle.

Abstract: In a vehicle has a generator and a secondary battery, when a power storage ratio of the secondary battery becomes less than or equal to a first threshold value, until the power storage ratio becomes a second threshold value, which is greater than the first threshold value, a charging control apparatus sets an upper limit of power generation voltage of the generator other than during deceleration of the vehicle, to be higher than an upper limit of the power generation voltage other than during deceleration of the vehicle when the power storage ratio is greater than the second threshold value. The charging control apparatus is provided with: a changing device configured to change the second threshold value so that the second threshold value approaches the first threshold value when a discharge-charge tendency of the secondary battery based on past data associated with the power storage ratio is a charge tendency.

Abstract: A charge control device for a battery is mounted on a vehicle, the vehicle comprises an engine, a generator driven with power of the engine, the battery configured to be chargeable with electric power generated by the generator, and auxiliary machinery operated with electric power of the battery.

Abstract: An electric power supply device includes first and second batteries respectively supplying electric power to a plurality of load instruments mounted on a vehicle, an electric power generator capable of charging the first battery and the second battery by regenerative electric power generation, and control means for controlling the electric power generator so that a charging electric power amount of at least one of the first battery and the second battery based on the regenerative electric power generation is suppressed in a case where at least one of a high-load instrument and a backup target instrument is present among the plurality of load instruments and the electric power generator is performing the regenerative electric power generation during the deceleration of the vehicle.