An interruption device is provided in a motor vehicle to interrupt a signal line in an emergency operating state. The interruption device includes a fuse and a resistor in the signal line and first and second switches. The fuse is arranged upstream of the resistor in a signal line direction extending from a low-voltage on-board electrical system to a high-voltage on-board electrical system. The first switch is provided in a first electric line connecting the signal line to ground at a connection point downstream of the resistor, and the second switch is provided in a second electric line which connects the signal line to ground at a connection point between the fuse and the resistor. The first and second switches are open during the normal operation of the motor vehicle and are closed in response to the control signal to interrupt the signal line by separating the fuse.

An interruption device is provided in a motor vehicle to interrupt a signal line in an emergency operating state. The interruption device includes a fuse and a resistor in the signal line and first and second switches. The fuse is arranged upstream of the resistor in a signal line direction extending from a low-voltage on-board electrical system to a high-voltage on-board electrical system. The first switch is provided in a first electric line connecting the signal line to ground at a connection point downstream of the resistor, and the second switch is provided in a second electric line which connects the signal line to ground at a connection point between the fuse and the resistor. The first and second switches are open during the normal operation of the motor vehicle and are closed in response to the control signal to interrupt the signal line by separating the fuse.

An electric circuit (5) for charging at least one electrical energy storage unit (4) by means of an electrical network, the circuit (5) comprising: an inductive cell (6) configured to interact with an inductive cell of the electrical network to exchange energy by electromagnetic induction, a rectifier (13) disposed downstream from the inductive cell (6) and whereof the positive output terminal (17) and the negative output terminal (20) are each connected to a conductor (18, 21) of a DC bus (19), a capacitor (22) mounted between the two conductors (18, 21) of the DC bus (19), a power stage (25) whereof the positive input terminal (26) and the negative input terminal (27) are respectively connected to one of the conductors (18, 21) of the DC bus (19), and which is configured to adapt the value of the DC voltage between the positive input terminal (26) thereof and the negative input terminal (27) thereof to the electrical energy storage unit (4), the power stage comprising, at most, two voltage converters, and the electrical energy storage unit (4).

An electric circuit (5) for charging at least one electrical energy storage unit (4) by means of an electrical network, the circuit (5) comprising: an inductive cell (6) configured to interact with an inductive cell of the electrical network to exchange energy by electromagnetic induction, a rectifier (13) disposed downstream from the inductive cell (6) and whereof the positive output terminal (17) and the negative output terminal (20) are each connected to a conductor (18, 21) of a DC bus (19), a capacitor (22) mounted between the two conductors (18, 21) of the DC bus (19), a power stage (25) whereof the positive input terminal (26) and the negative input terminal (27) are respectively connected to one of the conductors (18, 21) of the DC bus (19), and which is configured to adapt the value of the DC voltage between the positive input terminal (26) thereof and the negative input terminal (27) thereof to the electrical energy storage unit (4), the power stage comprising, at most, two voltage converters, and the electrical energy storage unit (4).

A battery management support device that is configured to acquire information on an electric vehicle including a battery that is rechargeable with electric power received from an external power supply. The information includes at least information when the electric vehicle is parked indicating a temperature of the battery, information when the electric vehicle is parked indicating an electrical connection state between the electric vehicle and the external power supply, and information when the electric vehicle is parked indicating an operation state of a cooling device for the battery.

A relay diagnosis circuit capable of diagnosing whether a relay connected to a negative electrode of a battery pack normally operates using voltage applied from a positive electrode of the battery pack.

A method for managing energy to a transport climate control system from a vehicle electrical system is provided. The vehicle electrical system includes a vehicle power network and an auxiliary power network connected to a transport climate control load network via a DC regulated bus. The method includes monitoring a vehicle voltage of the vehicle power network and determining whether the vehicle power network requires holdover assistance based on the vehicle voltage. Also, the method includes the bus sending vehicle power energy generated by the vehicle power network to the transport climate control load network without assistance of the auxiliary power network when the controller determines that the vehicle power network has sufficient power capacity available, and the bus sending the vehicle power energy and auxiliary power energy stored by the auxiliary power network to the transport climate control load network when the controller determines that the vehicle power network requires holdover assistance.

A method for managing energy to a transport climate control system from a vehicle electrical system is provided. The vehicle electrical system includes a vehicle power network and an auxiliary power network connected to a transport climate control load network via a DC regulated bus. The method includes monitoring a vehicle voltage of the vehicle power network and determining whether the vehicle power network requires holdover assistance based on the vehicle voltage. Also, the method includes the bus sending vehicle power energy generated by the vehicle power network to the transport climate control load network without assistance of the auxiliary power network when the controller determines that the vehicle power network has sufficient power capacity available, and the bus sending the vehicle power energy and auxiliary power energy stored by the auxiliary power network to the transport climate control load network when the controller determines that the vehicle power network requires holdover assistance.

An electrically powered vehicle system includes a DC/DC converter stage with a rectified input terminal which receives a rectified input from an AC power input. The system also includes a vehicle battery which receives power output from the DC/DC converter stage, via a first link between the rectified input terminal and the DC/DC converter stage. A second link is connected to the first link and to a vehicle device.

An electrically powered vehicle system includes a DC/DC converter stage with a rectified input terminal which receives a rectified input from an AC power input. The system also includes a vehicle battery which receives power output from the DC/DC converter stage, via a first link between the rectified input terminal and the DC/DC converter stage. A second link is connected to the first link and to a vehicle device.