A vehicle includes a main battery; an auxiliary battery; a plurality of loads connected to the main battery and auxiliary battery; a main controller configured to determine a total amount of available power according to an amount of available power of each of the main battery and the auxiliary battery; and a plurality of load controllers communicatively connected to the main controller and configured to receive the total amount of available power from the main controller and determine whether to operate each of the loads electrically connected to the load controllers based on the received total amount of available power, wherein the plurality of load controllers are configured to control to operate a load requiring an operation among the plurality of loads, when the total amount of available power determined by the main controller is greater than or equal to an amount of power required for the operation of the load requiring the operation.

Motor vehicle on-board network having at least two main line strands arranged electrically parallel to one another, the main line strands being electrically short-circuited to one another in two regions which are separated from one another and having a connection for one of at least two on-board network power supplies in each case, at least one motor vehicle on-board network being arranged in the at least two main line strands interrupting the respective main line strand, the motor vehicle electrical system switching network having at least three switches, a first switch being arranged between a first main line connection and a common node, a second switch being arranged between a second main line connection and the common node, and a third switch being arranged between the common node and at least one load connection.

A riding lawn mower comprising, a pair of rear drive wheels, a pair of front wheels, a deck positioned between the pair of front wheels and the pair of rear drive wheels, a rotatable cutting blade, and multiple battery packs removably coupled to the riding lawn mower and structured to provide power to the riding lawn mower, each battery pack graspable and removable by a user, wherein the multiple battery packs jointly provide power to the riding lawn mower.

In a power supply system and a method for controlling the same, at least one battery from among a plurality of batteries is designated as a charging-side battery, and the remaining batteries are designated as discharging-side batteries. Next, the difference in current between the current flowing from the discharging-side batteries and the current flowing into the charging-side battery is determined on the basis of currents measured by a plurality of current measuring instruments. Next, the transformation rate of a voltage transformer connected to the discharging-side batteries is determined on the basis of the determined difference in current.

Control device for controlling a switch in a charging line disposed between a first power line and a second power line in a power distribution architecture. The control device includes a current level input for receiving a current measurement of the current conducted through the charging line, a voltage level input for receiving a voltage measurement of the voltage applied on the charging line. A monitor monitors the relationship between the current and voltage measurements and generates a control signal for controlling the switch in response to a coherent change in the current and voltage measurements exceeding a threshold. A control signal is not generated when a change in one of the current and voltage measurements exceeding a threshold is not associated with a coherent change in the other of the current and voltage measurements.

A welding-type power system that includes an engine configured to drive an electric generator to provide a first power output. In addition to the electric generator, the system includes an energy storage system to provide a second power output. The system includes energy storage devices and charging devices that are used to charge the energy storage devices. A controller is configured to control the charging devices to provide charging power output to the energy storage devices based on the parameters related to the charge level of the energy storage devices. The controller, using data received from sensors and charge measurement devices, determines the respective charge level for each energy storage device; compares the respective charge levels to one or more threshold charge levels; and controls the charging devices to provide a charging power output to the energy storage devices with a charge level that is below a threshold charge level.

An electrical power system is provided. The electrical power system involves a battery powered motor which in turn generates electricity using a primary generator and a secondary generator. The secondary generator provides a recycle electricity to the battery, while the primary generator provides an electrical output for powering electrical devices.

A vehicle includes a first power system, a second power system, a switching relay, and a relay controller. The first power system is coupled to an engine restart motor. The second power system is provided independently of the first power system and is coupled to a starter and an accessory. The coupling state of the switching relay is switchable to an on state in which the first power system and the second power system are coupled, and to an off state in which the first power system and the second power system are not coupled. The relay controller is configured to receive a supply of electric power from both the first power system and the second power system and to control the coupling state of the switching relay.

A protection system for a high-voltage component includes a switching circuit and a protection controller. The switching circuit changes a variable arrangement of multiple battery packs between a parallel arrangement and a series arrangement. The protection controller commands the switching circuit into the series arrangement in response to a recharging session, commands a current flow in the recharging session, measures a measured voltage between an input node and a floating chassis ground of the high-voltage component, advances a timer while the measured voltage indicates a presence of an improper voltage, and cancels the recharging session in response to the presence of the improper voltage for greater than an exposure time. The recharging session provides a direct-current fast-charging voltage to battery packs in the series arrangement, and is greater than the battery voltage.

A power control system for a vehicle includes a charge port and a contactor connected to the charge port and including a first plurality of switches. An energy storage system includes a second plurality of switches and one or more battery packs. A bi-directional DC-DC converter is connected between the energy storage system and a plurality of vehicle loads. A controller is configured to control states of the first and second plurality of switches to configure in a plurality of modes including a range improvement mode, a first charging mode to perform charging at a first voltage level, a second charging mode to perform charging at a second voltage level, a battery preconditioning mode; and an accessory load support mode.