An apparatus and method for HVIL monitoring and control of an abnormal condition may be included to pass through a plurality of high voltage connectors of a battery pack, and inadequate electrical continuity of the HVIL may be identified with HVIL main power as the HVIL signal. If an abnormal condition exists in the HVIL (e.g., an open circuit), the HVIL main power may be switched to localized HVIL auxiliary power by a controller to individually check each connector for HVIL signal continuity. Each connector may be independently supplied with HVIL auxiliary power localized to the connector, to identify the state of that connector. Application, for example, to an electric vehicle, to differentiate between a potentially hazardous disconnect in a battery pack and a faulty low voltage HVIL signal line while driving to initiate safety control, if appropriate, enables a safer driving environment and experience.

A portable backup starting device for a vehicle includes an internal power source, a switching circuit, a first voltage detecting circuit, a first electrode clip, and a second electrode clip. The first electrode clip and the second electrode clip are configured to connect to a first end and a second end of a vehicle load; the internal power source has a first electrode and a second electrode. The first electrode is coupled to the first electrode clip, and the second electrode is coupled to the switching circuit; and the switching circuit is coupled to the second electrode clip. The first voltage detecting circuit is coupled to the switching circuit, the first electrode, and the second electrode.

A protection circuit of battery and an operating method thereof are disclosed. The protection circuit of battery has a current sensing pin coupled to a path node. The path node, a battery cell and a protection switch are coupled in series. The protection circuit includes a disconnection detection circuit and a first over-current protection circuit. The disconnection detection circuit is coupled to the current sensing pin and provides a first detection signal. The first over-current protection circuit is coupled to the disconnection detection circuit and generates a first protection signal according to the first detection signal to turn off the protection switch. When the current sensing pin is disconnected from the path node, the first detection signal causes the first over-current protection circuit to generate the first protection signal.

Various systems and methods are provided for monitoring state of charge (SOC) of wireless headphones. In one embodiment, a method comprises initializing a state of charge (SOC) of the earbud battery based on battery voltage in response to transitioning from a non-charging mode to a charging mode of the wireless earbud. In another embodiment, a first system comprises a left earbud, a right earbud, and a charging case comprising a microcontroller unit that monitors a right earbud battery and a left earbud battery via the charging case. In another embodiment, a second system comprises a left earbud, a right earbud, and a charging case comprising at least one communication bus communicatively coupled to the left earbud and right earbud to compare and correct a total charge of the left earbud battery, the right earbud battery, and/or the charging case battery.

An improved EV charger handle with a SAE J3400 connector plug provides the operating status of the charging station and an improved ergonomic design as compared to existing charger handles. In addition, the EV charging handle includes a UHF circuit activation button that enables a user to transmit a UHF signal to an electric vehicle in order to open the charging port on said vehicle. The EV charging handle further includes temperature sensors on the power contact pins of the connector plug.

A charging system for an aerosol-generating device includes a processor and a memory in communication with the processor and configured to store instructions is provided. The instructions define at least one of a disable mode, an intra-session mode, or an inter-session mode. The processor is configured to execute the instructions to cause the charging system to detect when the device is connected to a charging device; activate a power source charger in response to the connection to the charging device; identify a selected mode; enable or disable a heater of the capsule dependent upon the selected mode; if the heater is enabled, display a first display indicating the connection of the charging device; if the heater is enabled, detect if a session of the aerosol-generating device is ongoing; and if the session is ongoing, enable or suspend charging in response to the identification of the selected mode.

An uninterruptible power supply includes: a battery; an insertion node configured to, when the uninterruptible power supply is coupled to a connection apparatus connected to a first main power line and a second main power line, be electrically connected to the first main power line in the connection apparatus; a power switch configured to connect the connection apparatus and the battery; and a battery management system configured to measure a first voltage of the first main power line through the connection apparatus, turn ON the power switch when the measured first voltage is lower than a predetermined threshold value, measure a second voltage of the insertion node in the ON state of the power switch, and turn OFF the power switch when the measured second voltage is lower than a reference voltage.

A cleaner charging system is provided. The cleaner charging system includes a charging station and a robot cleaner. The robot cleaner receives power from the charging station and includes a motor, an impeller that is rotated by the motor and generates a suction force, a suction opening that is an inlet through which dust is suctioned by the suction force, a dust container in which the suctioned dust is collected, a third docking terminal, a fourth docking terminal, a battery, and a second switching device that connects the third docking terminal and the battery.

A wireless battery management system includes a master and a plurality of slaves. The master is configured to wirelessly transmit a first command packet and scan a response packet transmitted wirelessly from each slave that received the first command packet among the plurality of slaves. The response packet is transmitted wirelessly in a time slot allocated to each slave.

A shopping cart system includes a shopping cart that includes an input connector that receives a charging current and a DC voltage of a DC power supply different from a supply power supply of the charging current, a first resistor connected in parallel to an input line of the DC voltage, and a first output connector that outputs, to an input connector of another cart connected to a subsequent stage of the cart, the DC voltage across the first resistor and a part of the charging current received by the input connector. The power supply device includes a second output connector that outputs a charging current and a DC voltage via a second resistor connected in series to an output line of the DC power supply, and an energization control unit that stops the charging current when a voltage across the second resistor exceeds a predetermined value.