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.

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.

An apparatus for preventing overcharge of a battery in an eco-vehicle includes: a detector detecting the overcharge of the battery; and a signal processor controlling a high voltage relay according to an output signal output from the detector to block a charge of the battery.

This device for actively discharging an electrical energy storage device has a branch having first and second ends connected respectively to positive and negative terminals of the electrical energy storage device, and between the two ends, a thermistor having a resistance that increases with a temperature of the thermistor and a switch designed to receive a control signal (v.sub.GS) to change from an open state to a closed state, the thermistor and the switch being connected to one another so that, when the switch is closed, a discharge current (i.sub.D) enters through the first end, flows through the thermistor (210) and the switch one after the other, and emerges through the second end; and a device for controlling the switch. The control device is connected to the switch so as to provide the control signal (v.sub.GS) independently of the resistance of the thermistor.

This device for actively discharging an electrical energy storage device has a branch having first and second ends connected respectively to positive and negative terminals of the electrical energy storage device, and between the two ends, a thermistor having a resistance that increases with a temperature of the thermistor and a switch designed to receive a control signal (v.sub.GS) to change from an open state to a closed state, the thermistor and the switch being connected to one another so that, when the switch is closed, a discharge current (i.sub.D) enters through the first end, flows through the thermistor (210) and the switch one after the other, and emerges through the second end; and a device for controlling the switch. The control device is connected to the switch so as to provide the control signal (v.sub.GS) independently of the resistance of the thermistor.

An electric vehicle charging plug includes a housing for connecting to an electric vehicle, a main housing, a sensor comprising at least one conductive path embedded in a wall or arranged on the surface of the housing and/or main housing, and a control unit wherein the sensor is configured to detect the crack of the housing and/or the main housing.

A battery disconnect unit (100) for disconnecting a battery system (200) comprising at least one battery cell (5), from an electrical system (300). The battery disconnect unit (100) comprises a first terminal (2), a second terminal (4), a first switching element (S1), a second switching element (S2) and a current sensing resistor (6). A first connection of the first switching element (S1) is connected to a first connection of the current sensing resistor (6), and a second connection of the first switching element (S1) is connected to the first terminal (2). A first connection of the second switching element (S2) is connected to a second connection of the current sensing resistor (6), and a second connection of the second switching element (S2) is connected to the second terminal (4).

A motor control system includes a main control unit, a power supply unit, and a driving unit. The main control unit obtains sampling data of a motor and a power supply signal from the driving unit, generates a motor control signal according to the sampling data, and outputs a safety enable signal when determining that motor drive is abnormal according to the sampling data or when determining that power supply to the driving unit is abnormal according to the power supply signal. The power supply unit supplies power to the main control unit, monitors a state of the main control unit, and outputs a safety cut-off signal when the power supply unit or the main control unit is abnormal. The driving unit drives the motor according to the motor control signal, and switches to a safe path when receiving any one of the safety enable or safety cut-off signal.

A charging system for an autonomous rover includes a charging interface with contacts that interface with the autonomous rover, a rover power source for the autonomous rover, and circuitry operated by the autonomous rover for controlling charging of the rover power source.

A charging system for an autonomous rover includes a charging interface with contacts that interface with the autonomous rover, a rover power source for the autonomous rover, and circuitry operated by the autonomous rover for controlling charging of the rover power source.