A vehicle includes an engine, an alternator, and a battery bank electrically connected to the alternator via a connection line. The connection line includes a current sensor configured to measure an electrical current through the connection line. The vehicle also includes a start-stop system configured to determine, during a time when the engine is off, that a voltage of the battery bank is below a first threshold value for a first predetermined period, provide a control signal to a starter to start the engine to initiate charging of battery bank, determine, by the current sensor, that the electrical current is below a second threshold value, and in response to the determination, provide a control signal to turn the engine off to terminate the charging of the battery bank.

A voltage converter includes a direct current power source composed of a plurality of secondary batteries, a first load driven by a first direct current voltage of the direct current power source, a voltage conversion unit that converts the first direct current voltage into a second direct current voltage and is driven by the second direct current voltage, a second load coupled to each of the secondary batteries via the voltage conversion unit, and a controller that watches a state of each of the secondary batteries. The voltage conversion unit includes a plurality of switches each of which is disposed between a positive electrode or a negative electrode of one of the secondary batteries and the second load. The controller switches the multiple switches on the basis of the state of each of the secondary batteries so as to apply the second direct current voltage to the second load.

An electrical power system for regenerative loads may include a DC bus and an electrical actuator load, where back-driving the electrical actuator load generates regenerative electrical energy, and where the electrical actuator load is configured to transmit the regenerative electrical energy to the DC bus. The system may also include at least one additional load, where at least a portion of the regenerative electrical energy is transmitted to the at least one additional load.

The Self Powered Generator is the only product of its kind that has the capability of producing its own power by activating a self-propelling alternator/turbine to collect and store that power in a battery output. This unprecedented device is uniquely designed with durable, high-quality materials to ensure complete functionality and serves to aid in domestic or commercial settings. Multiple motors, regulators and alternators and switches and wires are added to a common drive shaft per load needs and design goals.

A vessel power supply system for a vessel including a propulsion device that includes an engine and a generator driven by the engine to generate electricity, includes a first battery that supplies power to the propulsion device, a second battery that supplies power to accessories of the vessel, a first open circuit voltage sensor that detects an open circuit voltage of the first battery, a second open circuit voltage sensor that detects an open circuit voltage of the second battery, and a switch that is turned on/off to open and close a current path between the first battery and the second battery.

Provided is a relay device that is able to supply a charging current to at least two electrical storage units from a power generator. In a relay device, a first electrical storage unit-side conduction path is connected between a power generator-side conduction path and a first electrical storage unit, and a second electrical storage unit-side conduction path is connected between the power generator-side conduction path and a second electrical storage unit. A relay unit breaks electrical continuity between the first electrical storage unit and the second electrical storage unit when a first switch unit provided on the first electrical storage unit-side conduction path and a second switch unit provided on the second electrical storage unit-side conduction path are OFF. A control unit turns OFF the second switch unit when the first switch unit is ON, and turns OFF the first switch unit when the second switch unit is ON.

The present invention relates to a battery management system, and to a battery management system, in which a voltage measuring unit measuring a voltage of a battery and a control unit controlling the battery based on the measured voltage value are separated in a battery management controller included in an existing battery management system and the voltage measuring unit is included in the battery disconnecting unit, thereby preventing insulation resistance between the voltage measuring unit and the control unit from being decreased.

A stop control circuit for controlling stopping of an engine that performs a rotational operation of an alternator that charges a power storage device, the stop control circuit including: an instruction unit configured to output a stop instruction signal for instructing stopping of the engine; and a first electronic control unit configured to output a stop signal for stopping rotation of the engine to the engine after a power storage amount of the power storage device reaches a predetermined value from when the stop instruction signal is received.

A system combining exercise, work, power generation and energy storage has a rotary power generation device, disposed in an exercise apparats for converting rotational kinetic energy into electric energy; an energy storage device for storing the electric energy; a charging port, disposed on the exercise apparats; a resistor, configured to supply resistance power, a monitoring unit, configured to display data of the kinetic energy and the electric energy; and a control system for managing or controlling the electric energy, so as to adjust a charging electric energy demand of the charging port, the electric energy stored by the energy storage device, and the resistance value of stepping by the user according to the resistance setting of the monitoring unit.

A battery class determination device includes a detector for sensing a terminal voltage and charge/discharge currents of a lead storage battery, an inner resistance calculator for calculating a direct-current inner resistance of the lead storage battery based on the terminal voltage and the charge or discharge current sensed by the detector, and a class determiner. The inner resistance calculator calculates, at a switchover between a discharge control and a charge control over the lead storage battery, a direct-current inner resistance in a first period before the switchover, and a direct-current inner resistance in a second period after the switchover. The class determiner determines a class of the lead storage battery based on the direct-current inner resistance in the first period and the direct-current inner resistance in the second period.