Capacitor Electrode Mounted Electronic Component
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Solution Overview
Problem
Capacitors in cardiac defibrillators face inefficiencies due to high electrical resistance between subcomponents, leading to undesirable heating and slow charging or discharging, which can result in oversized capacitors and reduced reliability.
Innovation Solution
Mounting electronic components such as resistors or diodes directly onto the capacitor electrode reduces electrical resistance, allowing for lower equivalent series resistance (ESR) and improved thermal management, enabling capacitors to operate at lower temperatures and withstand higher charging or discharging rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If electronic components are mounted separately from the capacitor electrode using traditional circuit board interconnections, then ease of manufacture is improved, but electrical resistance increases leading to higher ESR and undesirable heating
Solution Approach 1:
The patent merges the electronic component mounting directly onto the capacitor electrode, eliminating the need for separate circuit board interconnections. This integration reduces the number of connection points and interconnection materials, thereby reducing electrical resistance and ESR while maintaining ease of manufacture through a unified structure.
Solution Approach 2:
The patent extracts the intermediate circuit board and interconnection layers from the traditional capacitor structure. By removing these intermediary elements that contribute to electrical resistance, the electronic components are directly coupled to the electrode, reducing energy loss while simplifying the manufacturing process.
2Reliability
If capacitor size is increased to compensate for poor conductivity and heating, then reliability is improved, but device volume increases
Solution Approach 1:
By merging the electronic components directly onto the electrode, the patent reduces the overall system volume required. The integrated structure eliminates the need for additional space dedicated to interconnections and heat dissipation pathways, allowing reliable operation in a more compact form factor.
Solution Approach 2:
The patent changes the electrical resistance parameter by reducing ESR through direct mounting. This parameter change allows the capacitor to operate reliably without requiring increased size for heat management, as the reduced resistance inherently lowers power dissipation and thermal issues.
3Loss of energy
If electronic components are mounted directly onto the capacitor electrode, then electrical resistance is reduced and ESR is lowered, but manufacturing complexity increases
Solution Approach 1:
The merging of electronic components directly onto the electrode simplifies the overall device structure by reducing the number of separate subcomponents and interconnections. This integration lowers manufacturing complexity despite the direct mounting approach, as fewer assembly steps and materials are required.
4Temperature
If capacitor operates at higher temperatures due to resistive heating, then thermal mass decreases, but reliability is reduced due to thermal shock
Solution Approach 1:
The patent changes the temperature parameter by reducing operating temperature through lower ESR. This parameter change directly improves reliability by reducing thermal stress and thermal shock, as the reduced resistive heating prevents excessive temperature rises during charging and discharging cycles.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach results in capacitors with improved thermal mass, reduced thermal shock, and increased efficiency, leading to smaller, more cost-effective designs that can handle higher energy discharge rates while maintaining reliability.
Implementation Method 1
Capacitors both store and discharge electrical energy quickly. In storing or discharging, electrical energy is transferred through subcomponents of the capacitor.
Implementation Method 2
by mounting an electronic component on a capacitor electrode, the electrical resistance experienced by a charge stored as it moves from storage to the electronic component is reduced
Implementation Method 3
the capacitor has an improved thermal mass. As such, the capacitor has an increased capacity to sink heat away from components coupled to the capacitor
Data Source
AI summary
One example includes a capacitor case sealed to retain electrolyte, electrolyte disposed in the capacitor case, a capacitor electrode disposed in the capacitor case, an electronic component mounted to the capacitor electrode and disposed in the capacitor case, the electronic component including two contacts, with a first contact mounted onto the capacitor electrode and with a second contact mounted onto a terminal disposed on an exterior of the capacitor case and sealingly extending through the capacitor case, the first and second contacts electrically isolated from one another, a additional capacitor electrode disposed in the capacitor case, a separator disposed between the capacitor electrode and the additional capacitor electrode and a additional terminal disposed on the exterior of the capacitor case and in electrical communication with the additional capacitor electrode, with the terminal and the additional terminal electrically isolated from one another.