Capacitor assembly package structure and method of manufacturing the same, and electronic device

Patent metadata

Field	Value
Publication number	US-2025087420-A1
Application number	US-202418610362-A
Country	US
Kind code	A1
Filing date	Mar 20, 2024
Priority date	Sep 12, 2023
Publication date	Mar 13, 2025
Grant date	—

Abstract

A capacitor assembly package structure and a method of manufacturing the same, and an electronic device are provided. The capacitor assembly package structure includes a capacitor assembly, a plurality of first insulating package bodies, a second insulating package body and an electrode assembly. The capacitor assembly includes a plurality of capacitor structures. The capacitor assembly has a plurality of stacking gaps. The first insulating package bodies are respectively received in the stacking gaps of the capacitor assembly. The second insulating package body is configured to cover the first insulating package bodies and the capacitor structures. The electrode assembly includes a first electrode structure and a second electrode structure. A solid content of each first insulating package body is less than a solid content of the second insulating package body so as to reduce the percentage of multiple pores formed in each stacking gap of the capacitor assembly.

First claim

What is claimed is:

1 . A capacitor assembly package structure, comprising:
a capacitor assembly including a plurality of capacitor structures that are stacked in sequence and electrically connected to each other, wherein each of the capacitor structures has a positive electrode portion and a negative electrode portion, the capacitor assembly has a plurality of stacking gaps, and each of the stacking gaps is correspondingly formed between two adjacent ones of the capacitor structures; a plurality of first insulating package bodies configured to be respectively received in the stacking gaps of the capacitor assembly; a second insulating package body configured to cover the first insulating package bodies and the capacitor structures; and an electrode assembly including a first electrode structure and a second electrode structure, wherein the first electrode structure and the second insulating package body cooperate with each other and are electrically connected to the positive electrode portion of the capacitor structure, and the second electrode structure and the second insulating package body cooperate with each other and are electrically connected to the negative electrode portion of the capacitor structure; wherein a solid content of each of the first insulating package bodies is less than a solid content of the second insulating package body; wherein a total volume of the first insulating package bodies is smaller than a volume of the second insulating package body; wherein each of the first insulating package bodies and the second insulating package body have the same or different insulating materials.

2 . The capacitor assembly package structure according to claim 1 ,
wherein each of the capacitor structures includes a metal foil, an insulating position-limiting layer disposed around a first portion of the metal foil, a conductive polymer layer for covering the first portion of the metal foil and contacting the insulating position-limiting layer, a carbon glue layer for covering the conductive polymer layer and contacting the insulating position-limiting layer, and a silver glue layer for covering the carbon glue layer and contacting the insulating position-limiting layer; wherein, a second portion of the metal foil of each of the capacitor structures is not covered by the insulating position-limiting layer, and the second portions of the metal foils of the capacitor structures are stacked in sequence or separate from each other; wherein the solid content of each of the first insulating package bodies is between 5% and 79%, and the solid content of the second insulating package body is between 80% and 95%; wherein the first insulating package bodies have the same insulating material, and the first insulating package bodies have the same solid content; wherein each of the first insulating package bodies includes a first insulating material and a plurality of first insulating particles mixed with the first insulating material, and the second insulating package body includes a second insulating material and a plurality of second insulating particles mixed with the second insulating material; wherein the first insulating material of each of the first insulating package bodies is silicone or epoxy resin, and each of the first insulating particles of each of the first insulating package bodies is silicon dioxide or aluminum trioxide; wherein the second insulating material of the second insulating package body is silicone or epoxy resin, and each of the second insulating particles of the second insulating package body is silicon dioxide or aluminum trioxide; wherein a density of the first insulating particles of each of the first insulating package bodies is smaller than a density of the second insulating particles of the second insulating package body; wherein the first insulating material of each of the first insulating package bodies and the second insulating material of the second insulating package body have the same insulating material or different insulating materials, and each of the first insulating particles of each of the first insulating package bodies and each of the second insulating particles of the second insulating package body have the same insulating material or different insulating materials; wherein the first insulating package bodies are configured to respectively fill the stacking gaps of the capacitor assembly, thereby reducing a percentage of pores formed within each of the stacking gaps of the capacitor assembly; wherein a filling rate of each of the stacking gaps filled by a corresponding one of the first insulating package bodies is between 85% and 95%.

3 . The capacitor assembly package structure according to claim 1 ,
wherein the electrode assembly is a conductive pin assembly or a terminal electrode assembly; wherein, when the electrode assembly is the conductive pin assembly, the first electrode structure of the electrode assembly includes a first embedded portion covered by the second insulating package body and a first exposed portion connected to the first embedded portion and exposed from the second insulating package body, the first embedded portion of the first electrode structure is electrically connected to the positive electrode portion of the capacitor structure, and the first exposed portion of the first electrode structure extends along an outer surface of the second insulating package body; wherein, when the electrode assembly is the conductive pin assembly, the second electrode structure of the electrode assembly includes a second embedded portion covered by the second insulating package body and a second exposed portion connected to the second embedded portion and exposed from the second insulating package body, the second embedded portion of the second electrode structure is electrically connected to the negative electrode portion of the capacitor structure, and the second exposed portion of the second electrode structure extends along the outer surface of the second insulating package body; wherein, when the electrode assembly is the terminal electrode assembly, the first electrode structure of the electrode assembly includes a first inner conductive layer configured to cover a first side portion of the second insulating package body and electrically contact the positive electrode portion of the capacitor structure, a first intermediate conductive layer configured to cover the first inner conductive layer, and a first outer conductive layer configured to cover the first intermediate conductive layer, the first inner conductive layer is one of a silver-containing material layer and a copper-containing material layer, the first intermediate conductive layer is a nickel-containing material layer, and the first outer conductive layer is a tin-containing material layer; wherein, when the electrode assembly is the terminal electrode assembly, the second electrode structure of the electrode assembly includes a second inner conductive layer configured to cover a second side portion of the second insulating package body and electrically contact the negative electrode portion of the capacitor structure, a second intermediate conductive layer configured to cover the second inner conductive layer, and a second outer conductive layer configured to cover the second intermediate conductive layer, the second inner conductive layer is one of a silver-containing material layer and a copper-containing material layer, the second intermediate conductive layer is a nickel-containing material layer, and the second outer conductive layer is a tin-containing material layer; wherein, when the electrode assembly is the terminal electrode assembly, the capacitor structures are carried by a conductive carrier substrate, and the negative electrode portion of the capacitor structure is electrically connected to the second

Assignees

• Apaq Technology Co Ltd

Inventors

• Lin Chieh
• Wang yi-ying

Classifications

• H01G9/15

  Solid electrolytic capacitors (H01G11/00 takes precedence) · CPC title

• H01G9/10

  Sealing, e.g. of lead-in wires · CPC title

• H01G9/26

  Structural combinations of electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices with each other · CPC title

• H01G9/08

  Housing; Encapsulation · CPC title

• H01G4/224 Primary

  Housing; Encapsulation · CPC title