The present invention relates to a device (10) for powering a rotating electrical machine (13) of a motor vehicle, comprising: —an amplifier (15) capable of being electrically powered by the first electrical energy storage unit (11) and capable of electrically powering the second electrical energy storage unit (12), characterised in that the amplifier (15) comprises an oscillating circuit (16), the oscillating circuit (16) comprising a capacitance (C) of value C′ and an inductive assembly comprising an inductance (L) of value L′ and a resistance (R) of value R′, —the oscillating circuit (16) having a specific angular frequency ω such that ω=I/√(L′×C′) and a natural frequency f such that f=ω(2π), and in that the value of the inductance (L) is variable in a predetermined manner, in particular so as to increase an electric current, supplied by the first electrical energy storage unit (11) to the oscillating circuit (16), into an amplified current supplied by the oscillating circuit (16) to the second electrical energy storage unit (12).

A power supply device, includes a rectifier circuit configured to perform rectification on alternating-current power to obtain a first pulsating direct-current voltage, a first-stage conversion circuit connected to the rectifier circuit and configured to perform isolation conversion on the first pulsating direct-current voltage to thereby obtain a second pulsating direct-current voltage; a second-stage conversion circuit connected to the first-stage conversion circuit and configured to convert the second pulsating direct-current voltage into a stable direct-current voltage; and a valley-fill circuit connected to the rectifier circuit and the first-stage conversion circuit individually, wherein the valley-fill circuit is configured to supply, in response to a voltage value of the first pulsating direct-current being less than a first voltage threshold, electrical power to an input of the first-stage conversion circuit to thereby increase a valley voltage of the first pulsating direct-current voltage.

Disclosed are a jumper cable, a starting power supply and a jump start device. The jumper cable includes first and second input terminals respectively configured to be connected with positive and negative electrodes of a starting power supply; first and second clamps respectively configured to be clamped to positive and negative electrodes of a vehicle battery; the second input terminal and the second clamp are electrically connected; a switching device, wherein the first input terminal and the first clamp are electrically connected through the switching device; and a non-MCU controlling circuit electrically connected with a controlling terminal of the switching device, configured to control the switching device to be switched on when the clamps are properly connected to the electrodes of the vehicle battery, and configured to not control the switching device to be switched on when the clamps are reversely connected to the electrodes of the vehicle battery.

A power control system for a battery system includes a resistor including a first terminal and a second terminal. A normally closed transistor includes a first terminal, a second terminal and a control terminal. The first terminal of the transistor is connected to a second terminal of the resistor and the second terminal of the transistor is connected to a second terminal of the battery system. A capacitor includes a first terminal connected to the first terminal of the resistor and a second terminal connected to the second terminal of the battery system. A power inverter includes a first terminal connected to the first terminal of the resistor, a second terminal connected to the second terminal of the battery system and an output connected to a load.

A mobile device has one or more sensors that are configured to detect the presence of fog or frost on a surface of the mobile device. A battery provides power to the mobile device. An energy transfer element, when activated, removes fog or frost from a surface of the mobile device. A programmed processor, within the mobile device, is programmed to: read one or more sensors disposed in the mobile device to determine if there is a fog or frost condition; upon detecting a fog or frost condition, activating the energy transfer element to remove fog or frost; and upon detecting an absence of the fog or frost condition, deactivating the heater energy transfer element.

A system and method for prolonging a useful lifetime of an energy storage. The method includes: determining, based on a first set of test storage data of the test energy storage, a first set of test configuration parameters comprising a first maximum charge level for the test energy storage, wherein the first set of test configuration parameters corresponds to a first estimated useful life; determining, based on a second set of test storage data of the test energy storage, a second set of test configuration parameters comprising a second maximum charge level for the test energy storage, wherein the second set of test configuration parameters corresponds to a second estimated useful life; and sending, to a controller of the test energy storage, reconfiguration instructions, wherein the reconfiguration instructions are based on the second set of test configuration parameters, wherein the second estimated useful life is longer than the first estimated useful life.

A charging controlling system includes an input terminal, an output terminal, a battery terminal, and a switch terminal. The charging controlling system includes a coil connected to the switch terminal at a first end thereof. The charging controlling system includes a resistor connected to a second end of the coil at a first end thereof and to the battery terminal at a second end thereof. The charging controlling system includes a capacitor connected between the second end of the coil and the ground. The charging controlling system includes a diode connected to the switch terminal at a cathode thereof and to the ground at an anode thereof. The charging controlling system includes a charging controlling circuit that controls charging of the battery.

A battery booster for jumpstarting a vehicle having an external battery. The battery booster may include a processor, a set of terminal connectors, a power supply, and a power-management circuit. The set of terminal connectors may be configured to couple with the external battery or an engine that is electrically coupled with the external battery. The power supply may include a lithium battery configured to supply a starting current to jump start an engine. The external battery may have a first nominal voltage, while the lithium battery may have a second nominal voltage that is greater than the first nominal voltage. The power-management circuit operatively coupled with the at least one processor, wherein the at least one processor is configured to transfer power selectively between the external battery and the power supply. The processor is configured to perform a pre-charge function and/or a back-feed function via the power-management circuit, which may employ a pulse width modulation (PWM) driver.

The present inventions, in one aspect, are directed to techniques and/or circuitry to applying a charge pulse to the terminals of the battery during a charging operation, measure a plurality of voltages of the battery which are in response to the first charge pulse, determine a charge pulse voltage (CPV) of the battery, wherein the charge pulse voltage is a peak voltage which is in response to the first charge pulse, determine whether the CPV of the battery is within a predetermined range or greater than a predetermined upper limit value and adapt one or more characteristics of a charge packet if the CPV is outside the predetermined range or is greater than a predetermined upper limit value.

A battery pack comprising: a set of N parallel-coupled switched cell strings, each switched cell string comprising a cell and a switch for selectively coupling a first terminal of the cell to a first terminal of the battery pack.