Secondary transformer device for mounting e.g. in lower base of motor car for inductive coupling with primary transformer device, has pressure sensor for measuring pressure prevailing in recess and arranged in and/or at recess

摘要

The device (10) has a secondary coil (12) partially arranged in a housing. A recess (14) i.e. gap, is formed in the housing and closed with respect to exchange of particles with the environment, where a substance in a non-fixed aggregate state is included in the particles. A pressure sensor (16) measures a pressure prevailing in the recess, where the pressure in the recess is larger than an ambient pressure of the housing in an intact state of the housing. The recess is filled with a liquid or a gas, and the pressure sensor is arranged in and/or at the recess.