An electric vehicle includes a controller configured to receive sensor feedback from a high voltage storage device and from a low voltage storage device, compare the sensor feedback to operating limits of the respective high and low voltage storage device, determine, based on the comparison a total charging current to the high voltage storage device and to the low voltage storage device and a power split factor of the total charging current to the high voltage device and to the low voltage device, and regulate the total power to the low voltage storage device and the high voltage storage device based on the determination.

A vehicle includes an auxiliary battery and one or more accessory loads. An accessory load command is modulated such that the auxiliary battery outputs a discharge current to an accessory load. The discharge current has, in addition to a current component for driving the accessory load, an alternating current (AC) component to cause a temperature of the auxiliary battery to increase.

A charge-discharge control device charges a power storage device when the charge-discharge control device acquires no warming-up operation command. The charge-discharge control device, when the charge-discharge control device acquires the warming-up operation command, performs warming-up operation by repeated alternatingly charging the power storage device and discharging the power storage device via a first discharger. When a determiner determines during the warming-up operation that an amount of power discharged via the first discharger does not satisfy a criterion, the charge-discharge control device performs the warming-up operation by repeated alternatingly charging the power storage device and discharging the power storage device via a second discharger.

With the object of preventing deterioration due to the temperature when charging a secondary battery, a configuration is such that currents are controlled so as to be caused to flow equally through the respective phases of three-phase coils of a second group which configure an AC rotary machine body, whereby a large current is caused to flow for a short time, causing the secondary battery to rise in temperature, even when the AC rotary machine body is in a state of rest.

A charge-discharge control device (1) charges and discharges power storage devices (13, 23) through control of a converter (11) by a controller (14) and through control of a converter (21) by a controller (24). When the charge-discharge control device (1) acquires no warming-up operation command, the charge-discharge control device (1) charges the power storage devices (13, 23). When the charge-discharge control device (1) acquires a warmng-up operation command, the charge-discharge control device (1) repeats warmng-up operation to discharge one of the power storage devices (13, 23) and charge the other of the power storage devices (13, 23) using the discharged power so that the power storage devices (13, 23) alternately discharge.

A vehicle may include an engine, a traction battery, an electric motor, an electric cooling system, and a controller. The electric motor selectively converts torque from the engine to electric power and converts electric power from the traction battery to drive torque for the vehicle. The electric cooling system, responsive to a temperature of the traction battery exceeding a first threshold, cools the traction battery using the electric power. The controller, responsive to the temperature exceeding a second threshold less than the first threshold and accessory loads exceeding a third threshold, operates one or both of the engine and traction battery to maintain the temperature below the first threshold.

A drivability target engine speed is set based on a shift stage based on an accelerator opening level and a vehicle speed and the vehicle speed, and a base driving force is set based on an accelerator required driving force and the drivability target engine speed. When an elapsed time after an accelerator depression amount increases is less than a threshold value, a correction driving force is set based on an increase in accelerator depression amount and an engine, a first motor, and a second motor are controlled such that an effective driving force obtained by adding the correction driving force to the base driving force is output to a drive shaft for a hybrid vehicle to travel.

A battery management system includes at least one cell monitoring unit with a plurality of cell voltage terminals, supply lines coupled to the cell voltage terminals, and a cell monitoring circuit made of a plurality of electronic semiconductor modules connected in parallel via the supply lines. The battery management system is configured to monitor a plurality of battery cells via the cell monitoring unit. The battery cells are in each case connected on both sides with their respective positive battery cell terminal and negative battery cell terminal to the battery management system via the cell voltage terminals. Furthermore, one or several supply lines are provided with a melt fuse so that in each battery cell that is connected to the battery management system at least one supply line coupled to the battery cell comprises a melt fuse in its current path.

A method is provided for determining a lower voltage set-point, an upper voltage set-point, a temperature-dependent upper current set-point, a time limit value, and a lower current hysteresis threshold set-point based on a measured temperature of a battery. A charge current from a battery charging circuit is provided. If a charge voltage is above the lower voltage set-point and below the upper voltage set-point and the charge current exceeds the temperature-dependent upper current set-point, timer is started. If the timer reaches a time limit value while the charge current exceeds the temperature-dependent upper current set-point and the charge voltage is between the lower voltage set-point and the upper voltage set-point, the charge current is reduced.

A smart electric temperature-controlled system connected to a vehicle, such as a vehicle-transported refrigeration system, includes a power management system and an energy storage module. The power management system and energy storage module can manage power delivered to the temperature-controlled system components by monitoring temperatures and voltages (and possibly other factors) and by delivering power as a function of the things monitored. In a typical implementation the power management system and an energy storage module can supply power to a vehicle-transported refrigeration system when the vehicle is stopped and/or power from the vehicle electrical system is electrically isolated or otherwise unavailable.