An energy storage apparatus and methodology for controlling discharge of an energy storage apparatus. In embodiments, the apparatus includes a plurality of energy storage devices connected in series, a plurality of discharge resistors connected in parallel to the energy storage devices, a plurality of electrically operated switches connected between the energy storage devices and the discharge resistors, and a controller connected to the electrically operated switches. In use, the controller is configured to output an electrical signal to the electrically operated switches, and the presence or absence of the electrical signal is determinative of an open or closed state of the switches corresponding to respective inactive and active discharge states of the energy storage devices.

A portable energy storage device capable of simultaneous multi-port discharge and power allocation method, the device including multiple charging output ports, all or part of which have different preset power distribution priorities, enabling the user to determine the priority sequence of multiple power-receiving devices according to actual needs when using the device. Furthermore, when multiple charging output ports are all connected to power-receiving devices and the sum of the required power of the power-receiving devices exceeds the maximum power that the device can provide, all ports can still operate at their respective preset minimum power. If there is remaining power, the remaining power is preferentially allocated to the charging output ports with higher priority. Furthermore, when the number of charging output ports connected to power-receiving devices changes, the device reallocates power, thereby achieving dynamic power adjustment and enabling the device to operate at its maximum output power whenever possible.

A portable energy storage device capable of simultaneous multi-port charging and discharging and method for allocating charging and discharging power, wherein the energy storage device includes a power allocation unit, at least two power input ports, and at least two charging output ports, wherein the power allocation unit is used for allocating power to the power input ports connected to the charging device and the charging output ports connected to the receiving device, and the maximum permissible operating power of the energy storage device in charging and discharging mode is defined as P.sub.max. By distributing the power of the power input port and the charging output port, the portable energy storage device is enabled to meet the demand for simultaneous charging and simultaneous power supply, ensuring a good user experience.

The present disclosure provides a charging circuit capable of operating stably under a charging current of a wide range. A first transistor is connected between an input terminal and an output terminal. A current setting terminal is connected to an external current setting resistor. A second transistor is connected between the input terminal and the current setting terminal, and has a gate connected to a gate of the first transistor. A constant current feedback circuit feedback-controls a gate voltage of the first transistor in a manner that a voltage of the current setting terminal approaches a reference voltage. The constant current feedback circuit is configured in a manner that a phase compensation parameter is variable according to a current flowing through the first transistor.

A charging apparatus is provided according to some embodiments. The charging apparatus includes (1) charging circuitry configured to connect to a plurality of battery packs in parallel and (2) processing circuitry configured to control the charging circuitry by: (a) obtaining a voltage reading from each of the plurality of battery packs; (b) initially setting a charging voltage of a charger to a lowest voltage reading obtained from any of the plurality of battery packs; (c) while applying the charging voltage to the plurality of battery packs, obtaining a current reading from each of the plurality of battery packs that is charging; and (d) in response to the obtained current reading from a battery pack being below a minimum threshold current, increasing the charging voltage by a voltage step value. A similar method and computer program product are also provided.

The present disclosure provides a marine starter battery management system and a method for monitoring its low-temperature charging and discharging. The system comprises a battery management unit, a heating circuit, a high-current charge/discharge drive circuit, a passive balancing circuit, a voltage spike suppression circuit, a soft-start circuit, and a processing unit. The processing unit is electrically connected to these components. Based on battery state parameters, the processing unit controls in real-time the operating states and sequences of the heating circuit, the high-current drive circuit, the passive balancing circuit, the voltage spike suppression circuit, and the soft-start circuit. This intelligent, coordinated control of the various functional modules improves the safety, reliability, and performance of the marine starter battery, particularly in demanding low-temperature environments.

A vehicle charging device according to the present embodiment comprises: an amplitude detection unit that detects a magnitude of a grid voltage being inputted to the vehicle charging device; a frequency detection unit that detects a frequency of the grid voltage; a PLL (Phase Locked Loop) unit that monitors a phase of the grid voltage; and a gain selection unit that inputs a coefficient calculated using the magnitude and frequency of the grid voltage to the PLL unit, wherein the amplitude detection unit and the frequency detection unit detect a plurality of points at which the state of the grid voltage changes.

A pack for containing and recharging an e-cigarette includes: a re-chargeable pack battery; a first connector which is electrically connectable to an external power source; a first recharging mechanism for re-charging the pack battery using the external power source when the first connector is electrically connected to the external power source; a second connector which is electrically connectable to an e-cigarette contained within the pack; and a second recharging mechanism for re-charging the e-cigarette when the e-cigarette is electrically connected to the second connector. The first recharging mechanism includes a first protection circuit module and the second re-charging mechanism includes a second protection circuit module, wherein the protection modules protect the pack and e-cigarette against excessive voltage or current during re-charging.

This disclosure discloses a power supply apparatus, a power supply system, and a method. The apparatus includes: a power supply bus connected to an output end of a voltage conversion unit and a low-voltage battery through separate bidirectional isolation units. The bidirectional isolation units control connection and disconnection between the bus and the voltage conversion unit or the low-voltage battery. The bidirectional isolation unit includes two switches connected in series. The two switches connected in series each are connected in parallel to one diode, and the two diodes are disposed back to back. The power supply apparatus further includes another circuit, where the circuit is electrically connected to the bus, and is configured to supply power to a load. Solutions in embodiments are applied to new energy vehicles such as an electric vehicle and a hybrid electric vehicle, to improve functional safety performance of power supply of the vehicles.

A charging control method for an electrified vehicle includes detecting a high state of charge (SOC) and low ambient temperature charging condition and, in response thereto, controlling a thermal conditioning device of the electrified vehicle to thermally condition the high voltage battery system, wherein the thermal conditioning device is powered by a high voltage system of the electrified vehicle, controlling a charge current request for electrified vehicle supply equipment (EVSE) based on a load of the thermal conditioning device on the high voltage system, detecting a spike condition where an abrupt power-off of the thermal conditioning device causes the charge current request to the EVSE to exceed limits for the high voltage battery system and, in response thereto, temporarily decreasing the charge current request to the EVSE to prevent an overvoltage malfunction of the high voltage battery system.