An output device outputs a DC voltage applied between a first terminal and a second terminal via the drain and the source of a semiconductor switch. The output device includes a conversion circuit configured to convert the DC voltage into a voltage of a predetermined polarity, irrespective of the polarity of the DC voltage. A booster circuit boosts the voltage that was converted by the conversion circuit and applies the boosted voltage to the gate of the semiconductor switch. The semiconductor switch is on if the voltage of the control terminal with respect to the potential of the first terminal is at least a predetermined voltage.

The present disclosure relates to a charging processing method, a terminal device and a storage medium. The charging processing method, applied to a terminal device, includes determining whether the terminal device is in a upstream facing port (UFP) mode; when the terminal device is in the UFP mode, determining whether a cable is connected to the terminal device; when the cable is connected to the terminal device, determining whether the cable is a standard cable or a non-standard cable, wherein the terminal device is connected to a charging device via the cable; and when the cable is the non-standard cable, controlling, via the cable, the charging device to provide a standard voltage of non-quickly-charging input voltage to charge the terminal device.

A rechargeable battery jump starting device with a vehicle or equipment battery detection system. The vehicle or equipment battery detection system is configured for detecting the connection of the rechargeable battery jump starting device with the vehicle or equipment battery to be jump charged.

A charging apparatus includes at least one housing including a compartment, an access door connected to the housing and covering the compartment, the access door being movable from an open position to a closed position, a releasable latching mechanism configured to latch the access door in the closed position, a charging terminal in the compartment, a voltage sensing terminal, and a door release circuit coupled to the voltage sensing terminal and to the releasable latching mechanisms and configured to sense a charging voltage applied to the voltage sensing terminal. The door release circuit is configured to selectively unlatch the releasable latching mechanism in response to a voltage within a predetermined voltage range being applied to the voltage sensing terminal.

An electrical combination. The combination comprises a hand held power tool, a battery pack and a controller. The battery pack includes a battery pack housing connectable to and supportable by the hand held power tool, a plurality of battery cells supported by the battery pack housing, each of the plurality of battery cells having a lithium-based chemistry, being individually tapped and having an individual state of charge. A communication path is provided by a battery pack sense terminal and a power tool sense terminal. The controller is operable to monitor a state of charge of a number of battery cells less than the plurality of battery cells and to generate a signal based on the monitored state of charge of the number of battery cells less than the plurality of battery cells, the signal being operable to control the operation of the hand held power tool.

An energy supply system for a water-bound device and in particular to a corresponding method, including: a first DC voltage bus for a first DC voltage; a second DC voltage bus for a second DC voltage; and a first energy source which has at least two supplying electrical connections to the DC voltage buses, wherein at least one of the DC voltage buses has sections.

A battery polarity determination circuit includes a battery accommodating unit including a first contact and a second contact to be in contact with respective electrode terminals of a battery, a control device that is connected via a resistor to a voltage lead-out point at which a voltage of the battery is led out and determines a polarity of the battery, a connection switching circuit capable of switching between a first connection state and a second connection state, and a diode having a cathode to be connected to a voltage read-in point at which the resistor and the control device are connected to each other, and an anode to be grounded, wherein the control device determines the polarity of the battery based on a voltage at the voltage read-in point according to the connection state of the connection switching circuit, and a forward voltage of the diode is set so that the voltage at the voltage read-in point is not less than a lower limit value of an absolute maximum rating of the control device.

An output protector for chargers connected to the output terminal of charger, comprising a MOS tube as electronic switch, a light switchover signal terminal, a power output V+ terminal, a power GND terminal connected to the source of the MOS tube, and a power output V− terminal connected to the drain of the MOS tube. The power output V+ terminal and power GND terminal are connected to the output terminal anode and cathode of charger respectively. The light switchover signal terminal is connected to the charging state signal output end of charger. The power output V+ terminal and power output V− terminal are connected to the anode and cathode of battery, and the output protector has a triode on-unit which drives the MOS tube after the power output V+ terminal and power output V− terminal are connected to the anode and cathode of battery respectively.

Embodiments of the present invention disclose a troubleshooting method and device. The method is applicable to an inverter power supply system in the power supply device. The inverter power supply system includes at least two DC/DC modules, and any one of the DC/DC modules includes fuses F1 and F2, relays K1 and K2, inductors L1 and L2, switch modules Q1, Q2, and Q3, and direct current bus capacitors C1 and C2. The troubleshooting method includes: if it is detected that any one of the DC/DC modules is faulty, determining a faulty component in the faulty module; and if the faulty component is a C1 or a C2, and the inverter power supply system is in a battery discharging mode, turning on a Q2 in the faulty module, so that an F1 and an F2 of the faulty module are blown, to disconnect the faulty module from another DC/DC module.

An electric vehicle charging depot comprises a direct current (DC) bus configured to receive DC power from one or more power sources, the one or more power sources at least including a public transit light rail and/or subway power source; at least one electric vehicle charging stall connected to the DC bus and configured to charge an electric vehicle load; and at least one control module configured to monitor and control power flow from the DC bus to the at least one electric vehicle charging stall.