Aluminum polymer capacitors with improved internal conductance and higher breakdown voltage capability.
The method of forming a hybrid capacitor with a conductive separator using two conductive polymer layers addresses the issues of low conductivity and breakdown voltage, resulting in improved electrical performance.
JP7880848B2Active Publication Date: 2026-06-26KEMET ELECTRONICS CORP
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Patent Information
- Application Number
- JP2023133144
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2019-09-03
- Filing Date
- 2023-08-17
- Publication Date
- 2026-06-26
- Estimated Expiration
- 2040-07-31
AI Technical Summary
Technical Problem
Existing hybrid capacitors face issues with poor electrical performance, particularly low conductivity and breakdown voltage, due to non-continuous conductive polymer layers and contamination during in-situ polymerization processes.
Method used
A method involving a conductive separator with a first conductive polymer layer formed in-situ and a second conductive polymer layer applied post-winding, creating a continuous conductive path with improved conductivity and breakdown voltage.
Benefits of technology
The method enhances capacitor performance by achieving high breakdown voltage and low equivalent series resistance (ESR), improving ripple current and electrical stability.
✦ Generated by Eureka AI based on patent content.
Abstract
To provide a hybrid capacitor with improved electrical quality and reproductivity, and to provide a method of manufacturing the same.SOLUTION: A capacitor comprises a working element. The working element comprises an anode including a first dielectric body on the anode, a cathode, and a conductive separator provided between the first dielectric body and cathode. The conductive separator comprises a separator and a first conductive polymer. The first conductive polymer at least partially encapsulates the separator. A second conductive polymer at least partially encapsulates the first conductive polymer. The first conductive polymer has a higher conductivity than the second conductive polymer. An anode lead is in electrical contact with the anode, and a cathode lead is in electrical contact with the cathode.SELECTED DRAWING: Figure 1
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