Snubber Capacitor Vibration Damping in Switch Module Assemblies
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Solution Overview
Problem
Snubber capacitors in switch module assemblies vibrate relative to the switch module, risking terminal breakage.
Innovation Solution
A switch module assembly with a capacitor support member made of flexible material, such as thermoplastic vulcanizate, is used to reduce vibrations by being in contact with and positioned between the snubber capacitors and the switch module, utilizing snap fit protrusions and a positioning system to securely hold the capacitors in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If snubber capacitors are fastened to the switch module, then the electrical connection is established, but the capacitors vibrate relative to the switch module causing terminal breakage risk
Solution Approach 1:
A vibration-dampening element is introduced as an intermediary component between the snubber capacitor and the switch module. This element absorbs and reduces vibrations, preventing direct transmission to the capacitor terminals while maintaining electrical connection stability.
Solution Approach 2:
The vibration-dampening element is made of elastomeric material, creating a composite structure that combines the rigid electrical connection requirements with the flexible vibration-absorbing properties of elastomers.
2Stability of the object's composition
If rigid fastening is used to secure capacitors, then position stability is improved, but vibration-induced terminal breakage risk increases
Solution Approach 1:
The vibration-dampening element serves as a mediator that decouples the rigid fastening structure from the capacitor body, allowing the fastening to provide positional stability while the dampening element protects against vibration transmission to terminals.
3Device complexity
If no vibration reduction measure is taken, then device complexity is reduced, but terminal breakage occurs due to vibration
Solution Approach 1:
The vibration-dampening element is implemented as a flexible elastomeric component that can be integrated into the mounting structure. This flexible element provides vibration reduction with minimal added complexity compared to rigid mounting solutions.
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
The flexible capacitor support member effectively reduces snubber capacitor vibrations relative to the switch module, enhancing stability and preventing terminal breakage.
Implementation Method 1
a capacitor support member (8) made of flexible material, such as thermoplastic vulcanizate, is used to reduce vibrations by being in contact with and positioned between the snubber capacitors and the switch module
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A switch module assembly comprising a switch module (2) comprising a bus bar system having a positive bus bar (41) and a negative bus bar (42), and at least one snubber capacitor (6) fastened to the switch module (2), each of the at least one snubber capacitor (6) having a body part (64), a positive terminal (61) connected to the positive bus bar (41), and a negative terminal (62) connected to the negative bus bar (42). The switch module assembly comprises a capacitor support member (8) adapted to reduce vibration of the body part (64) of the at least one snubber capacitor (6) relative to the switch module (2), the capacitor support member (8) is made of flexible material, and is in contact with the body part (64) of the at least one snubber capacitor (6) and the switch module (2).