A latching relay system includes a latching relay that comprises a permanent magnet and a control electric coil and has a function of self-maintaining a state of an electric contact, at least one inductance component that is disposed close to the latching relay and has a function of generating magnetism when energized, and an assisting energization control unit that energizes the inductance component temporarily when the state of the electric contact of the latching relay is switched, and assists an operation of the latching relay by the magnetism generated by the inductance component.

Provided are embodiments for a circuit for a relay drive with a power supply economizer. The circuit includes a relay having a relay coil and a relay contact. The circuit also includes a power source to generate power for a coil drive voltage to operate the relay, and a controller configured to provide a command signal to operate the circuit in a plurality of modes. The circuit includes a first gate drive coupled to a first switch, wherein the first switch connects the relay coil to the circuit, and a second gate drive coupled to a second switch, wherein the second switch changes an effective resistance of a resistor network of the circuit to modify the coil drive voltage. Also provided are embodiments for a method for operating a circuit including relay drive with a power supply economizer.

The disclosure relates to an electromagnetic relay that comprises a yoke and an armature. The armature may be swivellably arranged on the yoke, have an open position and a contact position in relation to the yoke, and configured to be attracted by a magnetic field out of the open position into the contact position. The armature may include a first branch circuit having a first capacitor and a first exciter coil connected in series with the first capacitor, a second branch circuit having a second capacitor and a second exciter coil connected in series with the second capacitor, and a switch element arranged between the first branch circuit and the second branch circuit and having a first switch state and a second switch state. The first exciter coil and the second exciter coil may provide the magnetic field for attracting and retaining the armature.

The disclosure relates to an electromagnetic relay that comprises a yoke and an armature. The armature may be swivellably arranged on the yoke, have an open position and a contact position in relation to the yoke, and configured to be attracted by a magnetic field out of the open position into the contact position. The armature may include a first branch circuit having a first capacitor and a first exciter coil connected in series with the first capacitor, a second branch circuit having a second capacitor and a second exciter coil connected in series with the second capacitor, and a switch element arranged between the first branch circuit and the second branch circuit and having a first switch state and a second switch state. The first exciter coil and the second exciter coil may provide the magnetic field for attracting and retaining the armature.

A solenoid actuator for an injection valve or an intake valve is driven with current control during closed-loop control phases. In between the closed-loop current control, the actuator must be clamped to an opposite voltage so as to quickly decrease the current through the solenoid. The current is measured immediately following the clamping phase so as to determine whether or not the clamping phase resulted in the correct current level. If the measured current indicates an extraneous reduction in the current, the clamping phase duration is shortened for the next activation of this clamping phase. If the measured current indicates an insufficient decrease, the clamping phase duration is lengthened for the next following activation cycle.

A driving circuit includes a relay driver for selectively connecting a relay coil with (a) a first current path between the relay driver and a relay voltage input or (b) a second current path between the relay driver and a ground connection. Another relay driver selectively connects the coil with (a) a third current path between the other relay driver and the relay voltage input or (b) a fourth current path between the other relay driver and the ground connection. The relay drivers may connect the coil between the second and third current paths for latching the relay, and between the first and fourth current paths for unlatching the relay. The driving circuit applies signals of opposite polarity and different magnitudes through the coil to latch and unlatch the relay. The signal for unlatching can be of lower voltage than the signal for latching the relay.

A driving circuit includes a relay driver for selectively connecting a relay coil with (a) a first current path between the relay driver and a relay voltage input or (b) a second current path between the relay driver and a ground connection. Another relay driver selectively connects the coil with (a) a third current path between the other relay driver and the relay voltage input or (b) a fourth current path between the other relay driver and the ground connection. The relay drivers may connect the coil between the second and third current paths for latching the relay, and between the first and fourth current paths for unlatching the relay. The driving circuit applies signals of opposite polarity and different magnitudes through the coil to latch and unlatch the relay. The signal for unlatching can be of lower voltage than the signal for latching the relay.

The present subject matter relates to a battery module for use in a vehicle. The battery module may include a housing, a plurality of battery cells disposed within the housing, and solid state pre-charge control circuitry that pre-charges a direct current (DC) bus that may be coupled between the battery module and an electronic component of the vehicle. Furthermore, the solid state pre-charge control circuitry may include solid state electronic components as well as passive electronic components.

The magnetic coil driving circuit of the magnetic contactor according to the present invention comprises a semiconductor switch configured to open or close a circuit for magnetizing or demagnetizing a magnetic coil; a pulse width modulation unit configured to output a pulse signal as a control signal for turning on or off the semiconductor switch; a control unit configured to output a control signal for changing a pulse width of the pulse signal to the pulse width modulation unit; and a temperature detection and protection unit configured to detect a temperature inside the magnetic contactor, output an output signal for turning off the semiconductor switch when the temperature exceeds an allowable temperature, and control the semiconductor switch by the pulse signal from the pulse width modulation unit when the temperature is within the allowable temperature.

The disclosure discloses a liquid arc voltage transfer based direct current breaker and a use method thereof. The direct current breaker includes a first connection terminal, a second connection terminal, a main current branch, a transfer branch and an energy dissipation branch. The main current branch is connected between the first connection terminal and the second connection terminal, and the main current branch includes a liquid break. The transfer branch is connected between the first connection terminal and the second connection terminal and is connected in parallel with the main current branch. The energy dissipation branch is connected between the first connection terminal and the second connection terminal and is connected in parallel with the main current branch and the transfer branch.