CPC H01G 4/14 (2013.01) [C08F 122/14 (2013.01); H01G 4/005 (2013.01); H01G 4/129 (2013.01); H01G 4/232 (2013.01); H01G 4/30 (2013.01); H01G 4/304 (2013.01)] | 11 Claims |
1. A self-healing metallized polymer capacitor formed in the vacuum, the capacitor comprising:
non-thermoplastic polymer dielectric layers stacked with metallized electrodes to form a non-wound layer stack devoid of air gaps between constituent layers, at least one of said metallized electrodes having:
a first electrode portion with a first thickness limited by first and second surfaces of the at least one of said metallized electrodes,
wherein the first electrode portion is located with said first thickness extending throughout an active capacitor area and laminated between and in contact with a first surface of a first polymer dielectric layer and a second surface of a second polymer dielectric layer of said polymer dielectric layers of the layer stack, and
a second electrode portion with a second thickness limited by a third surface of the at least one of said metallized electrodes and the second surface of the at least one of said metallized electrodes, the second thickness being greater than the first thickness to increase mechanical strength of a capacitor's termination,
wherein said second electrode portion is located with said second thickness present
(i) between the first and second polymer dielectric layers such that:
the third surface of the at least one of said metallized electrodes is in direct physical contact with the first surface of the first polymer dielectric layer along said second electrode portion, and
the second surface of the at least one of said metallized electrode is in direct physical contact with the second surface of the second polymer dielectric layer along said second electrode portion, and
(ii) outside the first and second polymer dielectric layers such that at least one of the third surface and the second surface of the at least one of said metallized electrode is in contact, along the second electrode portion, with a material different from a material of the first and second polymer dielectric layers,
wherein said second electrode portion has a sheet resistance that is lower than that of the first electrode portion to minimize electrical resistivity of the capacitor's termination and to increase reliability of a high-current contact provided by such termination.
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