A straddled electric vehicle includes a wheel, an electric motor to drive the wheel, a battery to supply electric power to the electric motor, a DC charging port to receive a DC current output from a first external power source, and an AC charging port to receive an AC current output from a second external power source. A first distance between the DC charging port and the battery is smaller than a second distance between the AC charging port and the battery.

A vehicle power supply apparatus includes first and second device batteries, first and second power supply lines, a current path, first and second switches, and a second diode. The current path is coupled between the first and second power supply lines through a first diode. The first diode is provided on the current path and directed to make a current flow toward the second power supply line. The first switch is interposed between the first device battery and the first power supply line. The second diode and the second switch are interposed between the second device battery and the second power supply line. The second diode is directed to make a current flow toward the second power supply line, and the second switch is coupled in parallel to the second diode.

An update control apparatus of a vehicle to which a dual-power supply is applied, includes: a communication device configured to obtain update software for an update target controller from a server; a processor configured to determine whether to perform updating of a vehicle using the obtained update software by determining statuses of an auxiliary battery and a main battery of the vehicle; and a storage configured to store data and algorithms driven by the processor.

An electric tractor includes an electric motor to drive a traveling device; a battery; an inverter to supply electric power from the battery to the electric motor; a vehicle body frame located below a hood located forward of an operator's seat to cover the battery; and a support frame attached to the vehicle body frame, wherein the support frame includes a battery support to support the battery located at a position above the electric motor and above the vehicle body frame, and an inverter support to support the inverter located at a position between the battery support and the vehicle body frame and forward of the electric motor.

One or more systems, devices, and/or system-implemented methods are provided that can facilitate provision of varying AC output voltage or DC output voltage, including selectively separately providing a positive voltage output, a negative voltage output and no voltage output. A device can comprise a battery cell, and a controller connected to the battery cell and that varies output from the battery cell, wherein the controller is configured to cause the battery cell to selectively separately provide negative output voltage, positive output voltage and no output voltage. A method can comprise varying output polarity from a multi-cell battery cluster and selectively providing one or both of alternating current (AC) voltage output or direct current (DC) voltage output from the multi-cell battery cluster due to the varying of the output polarity.

This electric vehicle control device is provided with: an efficiency control unit which, during travel of the electric vehicle, in a state in which the battery is prone to deteriorate, increases the rate of consumption of the power charged in the battery by performing control for reducing the efficiency of the motor; a travelable distance calculation unit which calculates the travelable distance of the electric vehicle using the SOC of the battery and a travel coefficient; and a travel coefficient correction unit which, before and after the efficiency control unit performs control for reducing the efficiency of the motor, corrects the travel coefficient such that change in the travelable distance calculated by the travelable distance calculation unit is reduced.

Single, internally adjustable modular battery systems are provided, for handling power delivery from and to various power systems such as electric vehicles, photovoltaic systems, solar systems, grid-scale battery energy storage systems, home energy storage systems and power walls. Batteries comprise a main fast-charging lithium ion battery (FC), configured to deliver power to the electric vehicle, a supercapacitor-emulating fast-charging lithium ion battery (SCeFC), configured to receive power and deliver power to the FC and/or to the EV and to operate at high rates within a limited operation range of state of charge (SoC), respective module management systems, and a control unit. Both the FC and the SCeFC have anodes based on the same anode active material and the control unit is configured to manage the FC and the SCeFC and manage power delivery to and from the power system(s), to optimize the operation of the FC.

An electrochemical cell includes a housing defining an interior space of the electrochemical cell; and a lid disposed on a first face of the electrochemical cell defined by a length and a thickness of the housing. A dimension of the housing extending perpendicular to the first face of the electrochemical cell is a height of the housing, and the length of the housing is greater than the height of the housing. An anode and a cathode are disposed in the interior space of the electrochemical cell, and at least one of the anode or the cathode is connected to the lid.

A battery case structure for an electric vehicle, includes a side member in which a flange of the side member laterally provided in a battery case is deformed or broken from a partition to absorb an impact when a side collision occurs, minimizing the impact which is caused by the collision and is provided to penetrate into a battery. Furthermore, the partition of the side member is designed based on topology optimization to secure rigidity, protecting the battery against the impact.

Methods and systems are provided for managing multi-battery systems, such as those utilized in an electric vehicle. Multi-battery systems comprise batteries providing power in parallel, thereby making each battery available to the vehicle and avoiding the weight of transporting a backup battery. The methods and systems provided allow for a fault in one battery, in a parallel configuration with at least one other battery, to be detected and managed.