Systems and methods provide an alternative high voltage cutoff technique for disconnecting a high voltage battery from an electrical network of a vehicle in the event of a fault condition. Embodiments include a vehicle system comprising an electrical bus and a battery module coupled to the electrical bus via a contactor and a disconnector. The vehicle system further includes a controller configured to switch the contactor to an open state, upon receiving a fault condition signal, and if the contactor failed to open, activating the disconnector to break electrical connection between the battery module and the electrical bus. In some embodiments, the fault condition signal is generated upon detecting a vehicular impact. In some embodiments, the disconnector is a pyrotechnic device powered by a vehicle battery included in the vehicle system.

A battery charging system of an electronic device includes: a battery having a first nominal voltage and including: battery cells each having a second nominal voltage that is less than the first nominal voltage; and electrical connectors that electrically connect ones of the battery cells to provide the battery with the first nominal voltage; a first charge port configured to electrically connect to a first type of connector; a charging module configured to: receive power via the first charge port; and when a voltage of the received power is less than the first nominal voltage at least one of: charge ones of the battery cells individually; and charge groups of two or more of the battery cells.

An EV charging control apparatus may include a controller receiving a charging approval message for an EV from a charging management server, starting a charging to the EV in response to the charging approval message, measuring and accumulating an amount of energy charged to the EV, recognizing a charging termination operation from a user of the EV or the EV, and deriving charging information based on the amount of energy charged in response to the charging termination operation, and a short-range wireless communication module establishing a connection with a short-range wireless communication module mounted on the EV, and transmitting the charging information to the EV

A system for charging a battery unit to power a work machine. The system includes a charger to charge the battery unit, charging receptacles, power supply connectors, and a charging controller. The power supply connectors are configured to be received into the charging receptacles to attain connections between the charger and the battery unit. The charging controller is communicably coupled to the charger and is configured to receive an input corresponding to a net charge capacity of the battery unit; determine a power to be supplied to the battery unit by the charger to charge the battery unit in response to the input; and supply the power to the battery unit from the charger through the connections. The power to be supplied to the battery unit corresponds to a maximum possible power that meets the net charge capacity of the battery unit in the shortest possible time.

A shared battery system includes a battery having unique identification information, a communication unit communication-connected with a user terminal to receive user information from the user terminal, and an authentication unit configured to perform user authentication based on the user information. A controller is configured to control the authentication unit to perform the user authentication when a communication connection with the user terminal is made, to control the battery to supply electrical energy to a shared mobility device based on a use approval of the shared mobility device when the battery is mounted to the mobility device, to acquire usage information of the shared mobility device therefrom when the electrical energy is supplied to the shared mobility device, and to control the communication unit to transmit the acquired usage information of the shared mobility device and status information of the battery.

A voltage regulator is provided wherein electricity flows through a second transistor in an operating state in which a control unit) applies an operating voltage to a base of the second transistor. A Zener diode sets, in the operating state, a voltage of a second conductive path to a voltage corresponding to a voltage across the Zener diode. A current corresponding to an addition value obtained by adding a value of a current flowing through a second resistor portion in the operating state, a value of a current flowing through a third resistor portion in the operating state, and a value of a current flowing through the Zener diode in the operating state flows through a ground-side resistor portion. A control unit stops the output of the operating voltage when a voltage of the second conductive path is lower than or equal to a threshold value.

A powertrain for electric and plug-in hybrid vehicle applications with integrated three-phase AC charging featuring buck-boost operation and optional vehicle-to-grid (V2G) capability, along with corresponding methods and machine instruction sets for switch control. The powertrain can include of a three-phase current source converter (CSC) front-end with an associated input filter, a polarity inversion module, and in an embodiment, a dual-inverter motor drive. The dual-inverter drive is the source of both the back emf and requisite DC inductance for the CSC. A compact design is thus provided as no additional magnetics are required and the on-board cooling system required for traction mode can be re-deployed for charging and V2G mode. The powertrain is mode shifted between charging and V2G mode through an optional polarity inversion module.

A 12 volt automotive battery system includes a first battery coupled to an electrical system, in which the first battery include a first battery chemistry, and a second battery coupled in parallel with the first battery and selectively coupled to the electrical system via a first switch, in which the second battery includes a second battery chemistry that has a higher coulombic efficiency than the first battery chemistry. The first switch couples the second battery to the electrical system during regenerative braking to enable the second battery to capture a majority of the power generated during regenerative braking. The 12 volt automotive battery system further includes a variable voltage alternator that outputs a first voltage during regenerative braking to charge the second battery and a second voltage otherwise, in which the first voltage is higher than the second voltage.

A power distribution system is provided that ensures that a car is able to operate safely in an autonomous mode. The system includes multiple power rails, including a pair of safety critical power rails. Associated with each safety critical power rail is a safety switch, vehicle sensors (e.g., vehicle location and obstacle sensors), vehicle actuators (e.g., braking and steering actuators) and an autonomous control unit. If a fault is detected during vehicle initialization or general operation, the safety switch which detected the fault opens and that particular power rail is decoupled from the general purpose power rail as well as the remaining safety critical power rail. The remaining safety critical power rail is then able to provide power to a sufficient number of sensors, actuators and controllers to allow the car to safely and autonomously complete an emergency stop on the side of the road.

The present disclosure relates to a converter system for transferring electric power, a vehicle comprising such a converter system and a method for transferring electric power. The converter system comprises a first DC/DC converter module, a second DC/DC converter module and a control unit. The first DC/DC converter module is connectable to a first high voltage system and at least to a first low voltage system. The second DC/DC converter module is connectable to a second high voltage system and at least to the first low voltage system. The first DC/DC converter module comprises at least a first main DC/DC converter unit and a first micro DC/DC converter unit. The second DC/DC converter module comprises at least a second micro DC/DC converter unit. The first micro DC/DC converter unit and the second micro DC/DC converter unit are connectable via a first bidirectional switch unit. The control unit is configured to transfer the electric power from the first high voltage system to the first low voltage system via the first micro DC/DC converter unit, if the first main DC/DC converter unit is deactivated. The control unit is further configured to open the first bidirectional switch unit to transfer the electric power from the second high voltage system to the first low voltage system via the second micro DC/DC converter unit, if the first main DC/DC converter unit is deactivated and the first micro DC/DC converter unit has a failure.