Patent ID: 11948735
Assignee: TRAFAG AG
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G  Y | IPC G  H

Claim 0:
1. A method for producing a planar coil assembly (32) which has n planar coil units (10) arranged one on top of the other, wherein n is a natural number greater than 1, the method comprising:
a) creating an i-th planar coil unit (10) by producing, with the aid of a computer, at least one planar coil (12) made of an electric conductor and having a planar coil thickness di,PS on an insulating material layer (14) made of electric insulating material having a layer thickness di,IM, for i equal to 1 to n, and
b) arranging the planar coil units (10) in layers, with the interposition of the insulating material layer (14) between the planar coils (12), wherein the thicknesses di,PS and di,IM, are selected such that, 0
  ,
  
    6
    ≤
    
      
        D
        PS
      
      
        
          D
          IM
        
        +
        
          D
          PS
        
      
    
    ≤
    0
  
  ,
  9
  ,, applies, where DPS=Σi=1n di,PS is the sum of the thicknesses di,PS of the planar coils and DIM=Σi=1n di,IM is the sum of the thicknesses of the insulating material layers,
wherein step a) comprises at least one of following steps:
a1) fabricating several planar coils (12) per planar coil unit (10) lying in one plane by computer-aided production;
a2) fabricating several planar coils (12) per planar coil unit (10) lying in one plane by symmetrical computer-aided production;
a3) fabricating the planar coils (12) of different planar coil units (10) symmetrically to each other by computer-aided production;
a4) symmetrically fabricating the planar coils (12) of a planar coil unit (10) and the planar coils (12) of several planar coil units (10) by computer-aided production;
a5) lithographically fabricating the at least one planar coil (12) by computer-aided production;
a6) fabricating, by computer-aided production, the at least one planar coil (12) per planar coil unit (10) on an insulating material layer (14) selected from the group of insulating materials consisting of a printed circuit board base material, a prepreg layer, and a synthetic material;
a7) fabricating the at least one planar coil (12) to have several coil tracks separated from each other;
a8) fabricating a central generator planar coil and at least a first, a second, and a third measuring planar coil per planar coil unit in a point-symmetrical arrangement to each other; or
a9) fabricating a central generator planar coil and at least a first, a second, a third, and a fourth measuring planar coil per planar coil unit in an axially symmetric or point-symmetric arrangement to each other.