A power supply system having a plurality of power systems is provided with a power output section in each of the power systems, an electrical load in each of the power systems, operating from power supplied by the power output section, main paths that connect the power output sections of adjacent ones of the power systems, an inter-system switch that establishes a conducting condition between the adjacent power systems by being turned on and establishes a disconnected condition between the adjacent power systems by being turned off, and an intra-system switch in each of the power systems, which is disposed on the main path between the power output section and the inter-system switch, and which establishes a conducting condition between the power output section and the electrical load by being turned on and establishes a disconnected condition between the power output section and the electrical load by being turned off.

An all-terrain vehicle and a method for supply power to an all-terrain vehicle is disclosed. The all-terrain vehicle includes a power supply system including a power source and an energy storage unit. The power source is configured to supply power for a first device and a second device of the all-terrain vehicle. When a voltage of the power source is higher than a voltage of the energy storage unit, the energy storage unit is triggered to store electric energy, and when the power source supplies power to the first device and the second device and a voltage of the power source drops, the energy storage unit is triggered to release stored electric energy to the power source, and the electric energy released by the energy storage unit is supplied to the power source to increase an output voltage of the power source.

The present application discloses an all-terrain vehicle and a method for powering the all-terrain vehicle. The all-terrain vehicle includes: a frame; at least one seat arranged on the frame; a first device; a second device being a micro-control unit, a required electric power of the first device being greater than a required electric power of the second device, and the first device having a lower stability requirement for a power supply voltage than the second device; and a power supply system arranged behind the at least one seat and comprising a first power source and a second power source. The first power source is configured to supply power to a first device. The second power source is configured to supply power to a second device of the all-terrain vehicle.

A vehicle drive system for a vehicle including a first prime mover, a first prime mover driven transmission, and a rechargeable power source can be configured for reduced fuel consumption at idle. The vehicle drive system includes an electric motor in direct or indirect mechanical communication with the first prime mover. The control system causes fuel to be eliminated to the first prime mover while the vehicle is stopped and causes the electric motor to rotate the first prime mover at a speed, thereby reducing fuel consumption at idle for the vehicle.

An in-vehicle system includes a first battery and a second battery respectively connected to a first load and a second load, a relay that connects the two batteries in parallel, and a processor configured to control turn-on and turn-off of the relay to control a state of electric power supply from the first and second batteries to the first and second loads, detect an abnormality in the first and second batteries, and determine a difference between physical quantities of the two batteries. The processor is further configured to, when detecting the abnormality in the first or second battery, turn off the relay, and when no longer detecting the abnormality in the first and second batteries after the relay is turned off, turn on the relay when the processor determines that the difference between the physical quantities of the two batteries satisfies a predetermined condition.

A charging system includes: a charge port that receives shore power; a DC-to-DC converter or a motor inverter circuit; switches that connect the charge port and the DC-to-DC converter or the motor inverter circuit to battery packs; and a control module. The control module: determines open circuit voltages or states of charges of the battery packs; based on the open circuit voltages or the states of charges of the battery packs, determines whether to connect at least one of the battery packs to the charge port, the DC-to-DC converter, and the motor inverter circuit; and based on the determination of whether to connect at least one of the battery packs, control states of the switches to charge the at least one of the battery packs by selectively connecting the at least one of the battery packs to (a) the charge port, or (b) the DC-to-DC converter or motor inverter circuit.

A DC energy storage unit with a plurality of energy storage modules, each energy storage module including a plurality of electrochemical energy storage devices electrically connected in series; an internal control unit in the energy storage module; a power supply for the internal control unit; and a wireless communication system; wherein the total voltage of the plurality of energy storage devices in series is greater than or equal to 40 V DC, wherein the plurality of energy storage modules are coupled together in series, or in parallel, each energy storage unit including a wireless gateway for communication between the energy storage unit controller and each energy storage module; wherein each energy storage module further has a housing, the housing at least partially having a non magnetic material.

A power supply charging system comprising: a) a first power cell having electrical energy stored therein; b) a second power cell having electrical energy stored therein, wherein the first power cell and the second power cell are adapted to not be in a discharging mode or a charging mode simultaneously; c) a third power cell in electrical communication with the first power cell and the second power cell, wherein the third power cell is adapted to operably supply power to the first power cell when in the charging mode or the second power cell when in the charging mode; and d) a control system which is adapted to alternate the power being supplied from the third power cell to the first power cell while in the charging mode and the second power cell which in the charging mode based on an occurrence of a pre-determined condition.

Provided is an electric motor vehicle including a secondary battery, an electric motor, and a control device that controls an input to and an output from the secondary battery. Using an SOC of the secondary battery, the control device calculates a first OCV that is an OCV based on an assumption of absence of a change in voltage due to polarization. Using a voltage and a current of the secondary battery, the control device calculates a second OCV that is an OCV including a change in voltage due to polarization. When a voltage difference between the first OCV and the second OCV resulting from discharging of the secondary battery is large, the control device augments a limit value of electricity input into the secondary battery to be higher than a limit value when the voltage difference is small.

An assembly as an auxiliary source of power for an electric vehicle that can generate free energy. The assembly includes a housing that allows the assembly to be mounted to a wheel of the electric vehicle. The assembly includes a plurality of first batteries mounted to the housing; a charging circuitry configured to charge the plurality of first batteries; a shaft mounted to the housing, wherein the shaft is freely rotatable relative to the housing; an electric generator mounted to the shaft and the housing, wherein the electric generator rotates with the shaft for generating electricity; and a flywheel mounted to the shaft, the flywheel configured to rotate the shaft.