LC Module Segmented Chamber Vibration Damping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing LC modules in motor vehicle control devices face challenges in withstanding extreme thermal and mechanical loads, particularly in reducing susceptibility to malfunction due to vibrations and ensuring long-term stability under conditions of wide temperature ranges and mechanical vibrations.
Innovation Solution
The LC module features two spatially separated chambers for the electrolytic capacitor and coil, both embedded in a thermosetting casting compound, with a connecting piece between the chambers that can be positively or non-positively locked to the control device housing, and throughplated contacts for electrical connections, along with a third chamber for mechanical decoupling, enhancing vibration damping and heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the LC module uses a solid resin block with molded current rail and bonded components, then the electrical connection and structural integrity are improved, but the resistance to oscillation and vibration deteriorates under extreme conditions
Solution Approach 1:
The carrier plate is divided into two spatially separated chambers that are not rigidly connected, allowing each chamber and its components to move independently during vibration, thereby reducing stress transmission and improving vibration resistance while maintaining electrical connections through flexible means
Solution Approach 2:
A resilient plate with high conductivity is introduced as an intermediary between the LC module and the control device housing, serving dual functions of maintaining electrical connection and providing mechanical compliance to absorb vibration and oscillation forces
2Stability of the object's composition
If the LC module components are bonded to a rigid resin block, then the mechanical stability is improved, but the long-term stability under extreme thermal and mechanical loads deteriorates
Solution Approach 1:
Dividing the carrier plate into separate chambers creates isolation between components, preventing stress propagation through a rigid structure and allowing each component to withstand thermal and mechanical loads independently, thereby improving long-term stability
Solution Approach 2:
The resilient plate changes its mechanical properties (flexibility, damping characteristics) in response to thermal and vibrational conditions, allowing the system to adapt to extreme conditions and maintain reliability over time
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 configuration effectively reduces the susceptibility to malfunction and increases the serviceable life of electronic components by damping vibrations and improving thermal management, ensuring reliable operation across extreme conditions.
Implementation Method 1
both the frequency as well as the amplitude of the oscillations that are transmitted by means of the vibration, above all of the motor, to the electronic components of the LC module are damped
Implementation Method 2
A resilient plate having a high conductivity is arranged between the LC module and the lid of the control device in order to effectively dissipate the heat that is produced by the amplifying coil and the electrolytic capacitor by way of the lid to the surrounding area of the control device
Data Source
AI summary
An LC module for installation in a housing of a motor vehicle control device, a method for producing an LC module and a corresponding motor vehicle control device having an LC module. The LC module has a support plate, at least one electrolytic capacitor and a coil. The electrolytic capacitor and the coil are disposed in chambers of the LC module and are at least partially surrounded by casting compound. Furthermore, the support plate has a connecting part between the two chambers, the support plate being form-fittingly or frictionally connectable to the housing of the control device at least in the region of the connecting part.