Patent ID: 8530066

Claim:
A method for manufacturing a feedthrough for a battery comprising a first terminal element ( 1 ) and a second terminal element ( 2 ) that are electrically insulated from one another, wherein the first terminal element and/or the second terminal element comprises a parylene coating ( 3 ) which prevents a short circuit between the first and second terminal elements ( 1 , 2 ) comprising: mechanically coupling the first terminal element ( 1 ) and the second terminal element ( 2 ) to one another via fused glass wherein said second terminal surrounds said first terminal and wherein said first terminal passes through said fused glass via an opening in said second terminal; and, applying the parylene coating ( 3 ) by chemical vapor deposition on the first terminal element ( 1 ) and/or the second terminal element ( 2 ); wherein applying the parylene coating comprises vaporizing a starting material in a high-temperature zone, wherein the starting material comprises di-para-xylylene or di-para-xylylene halogenated substituents; and forming a para-xylylene diradical which immediately reacts on a surface of the feedthrough to form a chain-type polymer; making a casting of the feedthrough by silicone resin after the plasma aftertreatment of the coating ( 3 ) or the creating of the coating; wherein the silicone resin casting is applied to the coating and extends over a portion of the first terminal element, the second terminal element and the fused glass forming an inner lip between the fused glass and the second terminal element.