The application describes systems and methods for a modular portable power plant system including a first module having a first bank of one or more batteries and a second module that is detachably connectable to the first module. The second module includes a first DC to AC power inverter that is in electrical communications with the first bank of one or more batteries. The first module can be configured to house a first bank of one or more batteries arranged in a first configuration or a second configuration such that the first module includes a reconfigurable battery rack assembly arranged to be reconfigurable to provide support for a first battery set in the first configuration and a second battery set in the second configuration.

This disclosure describes at least embodiments of an aircraft monitoring system for an electric or hybrid airplane. The aircraft monitoring system can be constructed to enable the electric or hybrid aircraft to pass certification requirements relating to a safety risk analysis. The aircraft monitoring system can have different subsystems for monitoring and alerting of failures of components, such as a power source for powering an electric motor, of the electric or hybrid aircraft. The failures that pose a greater safety risk may be monitored and indicated by one or more subsystems without use of programmable components.

A vehicle including: a battery box inside of which a plurality of battery cells are provided, auxiliary equipment that can operate using electrical power, a travel system that can travel using electrical power, and a branch box that electrically connects the battery cells and the auxiliary equipment, and that electrically connects the battery cells and the travel system.

A battery control system includes first and second batteries each including first and second terminals configured to output a first voltage, third and fourth terminals configured to output a second voltage, a plurality of individually housed batteries, and a plurality of switches configured to connect ones of the individually housed batteries to and from ones of the first, second, third, and fourth terminals. A control module is configured to selectively provide the first voltage from either one of the first battery and the second battery to a first set of loads and selectively provide the second voltage from either one of the first battery and the second battery to a second set of loads.

A power supply device for a vehicle includes first and second systems, a switch disposed between the systems, and first and second controllers. The first system includes a first power supply and a first electrical apparatus. The second system includes a second power supply and a second electrical apparatus. The first mode controller executes a low power mode where the switch is turned on to supply electric power from one of the first and second power supplies to the first and second electrical apparatuses. The second mode controller executes a high power mode where the switch is turned off to supply electric power from the first and second power supplies to the first and second electrical apparatuses, respectively. When a discharge electric current of the second power supply exceeds a threshold during the low power mode, the second mode controller switches the power supply mode to the high power mode.

A solar energy based mobile EV fast charger system comprising a stationary solar power supply and a mobile EV fast charger installed in a service truck which has a bidirectional Multi-Functional Power Converter System (MFPCS), a solar energy based on-board battery, multiple DC inductors, a alternator power interface and an universal battery interface provides mobile EV charging service for any EV battery.

A drive system comprises a DC-DC converter that is arranged to receive an input voltage from a battery having a nominal battery voltage. The DC-DC converter has a first mode of operation in which the DC-DC converter generates a regulated output voltage from the input voltage and supplies the regulated output voltage to a load, and a second mode of operation in which the DC-DC converter is by-passed such that the input voltage from the battery is supplied to the load. A controller is arranged to compare the input voltage to a threshold voltage that is less than the nominal battery voltage. The controller operates the DC-DC converter in the first mode when the input voltage is less than the threshold voltage, and operates the DC-DC converter otherwise.

A wearable system, such as a footwear system, can employ a generator. The generator can be an electro-mechanical generator with a portion that spins to create an electricity. The portion that spins can be spun in such a manner that it does not stop, but instead a next spin beings before a previous spin completes. This can repeat until the generator reaches a terminal velocity.

To accomplish the invention, each individual stator pole winding has its own voltage and amperage matched battery, capacitor or storage device pack or packs and winding system controller or controllers which are signaled for operations and timing for the operation of all the similar other windings in the whole Electric Motor, Generator and battery combination without the necessity of wired interconnection of whole Electric Motor, Generator and battery combination winding electrical power in order to accomplish Electric Motor, Generator and battery combination functions.

A power supply system includes a first drive motor, a second drive motor, a first power line to which a first inverter and a first battery are connected, a second power line to which a second inverter and a second battery are connected, a voltage converter that converts a voltage between the first power line and the second power line, and an ECU that operates the first and second inverters and the voltage converter and controls charging and discharging of the first and second batteries. In a case where total required power is larger than first outputtable power of the first battery, the ECU discharges a shortage of power from the second battery to the second power line, wherein the shortage of power is obtained by excluding an amount that is output by the first battery from the total required power.