Multilayer Capacitor Band Portion Binding Metal Frame
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Solution Overview
Problem
Multilayer capacitors used in vehicles face challenges in achieving high thermal, electrical, and mechanical reliability, particularly in withstanding vibrations and deformation, and preventing separation from metal frames when manufactured in module form.
Innovation Solution
The electronic component design includes a capacitor array with multilayer capacitors arranged vertically, featuring external electrodes with band portions that are coupled to metal frames in a belt form, providing improved adhesion and reliability through conductive contact layers, and a specific ratio of metal frame to band portion dimensions for enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multilayer capacitors are stacked in module form to implement high capacitance, then capacitance is improved, but separation between multilayer capacitor and metal frame occurs
Solution Approach 1:
A band portion is introduced as an intermediary element between the multilayer capacitor body and the metal frame. This band portion wraps around the external electrode and is bound to the metal frame, creating a mechanical connection that prevents separation. The band acts as a mediator that transfers and distributes mechanical stress, ensuring reliable adhesion between the capacitor and frame structures.
Solution Approach 2:
The band portion is designed as a flexible wrapping element that can conform to the external electrode and be bound to the metal frame. This flexible thin film structure provides mechanical reinforcement and prevents separation without adding significant bulk, allowing the module to maintain high capacitance while ensuring reliable connections.
2Quantity of substance
If multilayer capacitors are used in vehicle applications, then high capacitance is required, but durability against vibrations and deformation deteriorates
Solution Approach 1:
The external electrode is segmented into a head portion and a band portion. The band portion is specifically designed to wrap around the electrode and be bound to the metal frame, creating a segmented structure that can independently handle mechanical stresses from vibrations and deformation while maintaining the overall capacitance of the module.
Solution Approach 2:
The band portion serves as a flexible protective element that wraps around the external electrode. This flexible film structure absorbs and distributes mechanical stresses from vibrations and deformation, protecting the rigid multilayer capacitor body while maintaining electrical connections and structural integrity in vehicle applications.
Data Source
AI summary
An electronic component includes a capacitor array having a plurality of multilayer capacitors consecutively arranged in a first direction, the plurality of multilayer capacitors each comprising a body, and first and second external electrodes respectively comprising first and second head portions, and first and second band portions respectively extending from the first and second head portions to portions of upper and lower surfaces and portions of side surfaces of the body, a first metal frame coupled to the plurality of first band portions by binding the first band portions in belt form so as to be connected to the plurality of first external electrodes, and a second metal frame coupled to the plurality of second band portions by binding the second band portions in belt form so as to be connected to the plurality of second external electrodes.