A current of a storage battery is appropriately controlled depending on the situation. In a battery controller, a battery information acquiring unit acquires information on the storage battery. A first allowable current calculating unit calculates a first allowable current of a battery module in accordance with a rated value of a component through which a current flows by charging or discharging of the battery module. A second allowable current calculating unit calculates a second allowable current of the battery module in accordance with an SOC of the battery module on the basis of the information acquired by the battery information acquiring unit. A third allowable current calculating unit calculates a third allowable current of the battery module in accordance with an SOH of the battery module on the basis of the information acquired by the battery information acquiring unit.

The electrical discharge circuit (106) includes: —two interface terminals (B.sub.A, B.sub.B), to which the capacitor (C) is intended to be connected and across which a capacitor voltage (u.sub.C) is intended to be present; —a current-consuming electrical circuit (108) connected between the two interface terminals (B.sub.A, B.sub.B) and designed to consume a discharge current (i) from the capacitor (C); and—an electrical control circuit (110) for controlling the current-consuming electrical circuit (108), the electrical control circuit (110) being connected between the two interface terminals (B.sub.A, B.sub.B) so as to receive the capacitor voltage (u.sub.C). The electrical control circuit (110) is designed: —to deactivate the current-consuming electrical circuit (108) when the capacitor voltage (u.sub.C) is above a predefined threshold; and—to activate the current-consuming electrical circuit (108) when the capacitor voltage (u.sub.C) across the two interface terminals (B.sub.A, B.sub.B) is below the predefined threshold. The electrical control circuit (110) is furthermore designed to be supplied with electrical power exclusively via the two interface terminals (B.sub.A, B.sub.B).

This disclosure relates to an electrified vehicle configured to disconnect a battery from a load, and a corresponding method. An example electrified vehicle includes an array of battery cells and an electrical conductor connecting the array to a load. A disconnect is arranged along the electrical conductor. Further, the electrified vehicle includes an electronic circuit with a switch and an igniter. When a voltage drop across the electrical conductor exceeds a threshold, the switch is configured to permit current to flow from at least one of the battery cells through the igniter to trigger the disconnect thereby disconnecting the array of battery cells from the load.

Disclosed is a device for controlling a connection between an electrical socket and a battery. The device for controlling a connection includes a first contactor arranged between a first terminal of the battery and a first terminal of the electrical socket, a second contactor arranged between a second terminal of the battery and a second terminal of the electrical socket, a first computer and a second computer. The first computer includes a high-side switch, arranged between a power supply line and the first contactor, and a low-side switch arranged between the second contactor and a ground line, and the second computer includes a low-side switch arranged between the first contactor and the ground line, and a high-side switch arranged between the power supply line and the second contactor.

Testing connections to phase windings of an electric motor upon startup includes, prior to entering a RUN state in which motor power commands are accepted from a user to perform work, applying to each respective phase of the electric motor a respective test voltage signal, measuring in each respective phase a respective current induced by the respective test voltage signal, and preventing entry into the RUN state when at least one values representative of a respective current is below the respective predetermined threshold.

An active discharge circuit for electric vehicle inverter, the active discharge circuit intended to be connected in parallel with a DC link capacitor connected between positive and negative lines of a DC power link, wherein the circuit comprises a dissipative current source, a switch connected in series with the current source between the DC lines, and a controller connected to the switch and arranged to apply an activation signal in dependence of a control signal, the activation signal placing the switch in a conducting state, wherein the current source is configured to draw a discharge current and dissipate any energy stored in the DC link capacitor when the switch is in the conducting state. As long as the switch is closed by the activation signal, the current source will draw a constant current and dissipate power, and the voltage across the DC link capacitor will decrease linearly.

A battery pack includes a pack case having a predetermined accommodation space, a plurality of battery modules accommodated in the pack case and having a plurality of battery cells stacked on each other, at least one partition isolation member disposed to compart the plurality of battery modules in a direction parallel to a stacking direction of the plurality of battery cells, a plurality of bus bar members configured to electrically connect the plurality of battery modules, a plurality of relay units connected to the plurality of bus bar members, and an outer resistor unit connected to the plurality of relay units and provided at one inner side of the pack case.

The present disclosure provides an electric motor control system and a vehicle. The electric motor control system includes a motor drive module, a multi-core processing module, and a safety logic module. The multi-core processing module includes a main function core and a lockstep monitoring core. The main function core is configured to obtain sampling data, and when any one of the sampling data, a running status of the main function core, a motor control signal, and a running status of a motor is abnormal, the lockstep monitoring core outputs a safety trigger signal; and the safety logic module is configured to output an instruction for prohibiting execution of the motor control signal to the motor drive module when receiving the safety trigger signal.

An abnormality diagnosis system performs an abnormality diagnosis of a plurality of motor systems that include a motor for moving a moving body. The abnormality diagnosis system identifies a comparison target system that is the motor system, among the motor systems, that is a comparison target in relation to a diagnosis target system that is the motor system to be a target of the abnormality diagnosis. The abnormality diagnosis system acquires a state-related value that is a value related to an operation state of the motor from each of the diagnosis target system and the comparison target system. The abnormality diagnosis system performs a comparison of the state-related value that is acquired from the diagnosis target system and the state-related value that is acquired from the comparison target system, and diagnoses a presence or absence of an abnormality in the diagnosis target system using a result of the comparison.

A vehicle state display device for a vehicle includes an output limiting unit that limits an output of the vehicle when charge of a battery is equal to or smaller than a first value and a battery state display unit that displays a state of the battery. The battery state display unit switches and displays a first display mode indicating that the state of charge of the battery exceeds a second value that is larger than the first value, a second display mode indicating that the state of charge of the battery is equal to or smaller than the second value and exceeds the first value and the output of the vehicle may be limited, and a third display mode indicating that the state of charge of the battery is equal to or smaller than the first value and the output of the vehicle is being limited.