Switching device, starting device, and method for an electromagnetic switching device
AssigneeRobert Bosch GmbH
InventorsSimon Rentschler, Duraisamy Sakthivadivel, Harald Schueler, Sven Hartmann, Juergen Gross, Stefan Tumback
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Abstract
A switching device has an electromagnetic switching element and a controller, the switching element including two coils on one core which act on a shared armature. In order to implement an operation of the armature to be activatable as rapidly and simply as possible with low power consumption, the controller is designed to have a switch in the current path of the coil in each case to activate each coil.
Claims6
A switching device, comprising:
- an electromagnetic switching element including two coils on one core, wherein the two coils act on a shared armature, wherein the first coil is a pull-in winding and the second coil is a hold-in winding which electromagnetically act on the shared armature;
- at least two switches corresponding to the two coils;
- and
- a controller configured to selectively control each switch to be in the current path of the corresponding coil to activate the corresponding coil;
- wherein the switch of the pull-in winding is force-coupled to the armature for shutdown of energization of the pull-in winding.
A method for operating an electromagnetic switching device having (i) an electromagnetic switching element including two coils on one core, wherein the two coils act on a shared armature, (ii) at least two switches corresponding to the two coils, and (iii) a controller configured to selectively control each switch, the method comprising:
- selectively activating, by the controller, each coil in a separate current path using the corresponding switch to act on the shared armature;
- wherein an energization voltage is applied to the coils, and wherein only one coil is energized as a function of time by a voltage upper limit of the energization voltage.
Dependencies are inferred from the claim text.