公开(公告)号：EP1341195A1

公开(公告)日：2003-09-03

申请号：EP02405160.9

申请日：2002-03-01

Applicant: ABB RESEARCH LTD.

Inventor： Fuhrmann, Henning ,  Carlen, Martin ,  Lakner, Martin ,  Spjut, Henrik ,  Jonsson, Johan

IPC: H01G4/38

CPC classification number: H01G4/385

Abstract: The present invention is concerned with a capacitive device, and in particular a metallized film capacitor made of a capacitive base structure with series connected internal base capacitors (21,41,42,22), the structure being repeated any number of times by suitably winding or stacking. The capacitor comprises auxiliary intermediate electrodes (32,34) which on either side do face only one electrode (11,53,13) which is part of an adjacent conductive layer (1,5). The internal base capacitors have a larger active capacitor area than the internal base capacitors of a comparable capacitor of conventional design, and the problems due to misalignment of the conductive layers and deviations in active base capacitor area are reduced. Further, the auxiliary intermediate electrodes do not see large in-plane charging currents, and therefore can preferentially have a high sheet resistance and good self-healing properties.

Abstract translation: 本发明涉及一种电容性器件，特别是由具有串联连接的内部基极电容器（21,41,42,22）的电容性基极结构制成的金属化薄膜电容器，该结构通过适当地绕组而重复任意次数 或堆叠。 电容器包括辅助中间电极（32,34），其在任一侧上只面向作为相邻导电层（1,5）的一部分的一个电极（11,53,13）。 内部基极电容器具有比常规设计的类似电容器的内部基极电容器更大的有源电容器面积，并且由于导电层的不对准和有源基极电容器面积的偏差导致的问题减少。 此外，辅助中间电极看不到大的面内充电电流，因此可以优先具有高的薄层电阻和良好的自愈性。