Bus Bar Exposure Structure for Electrical Connection Unit Cooling
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Solution Overview
Problem
Existing electrical connection units face challenges in improving heat dissipation properties.
Innovation Solution
The electrical connection unit incorporates a base member with a flat surface portion that includes an accommodation portion for a bus bar, allowing the bus bar to be exposed on one side, enhancing heat dissipation through improved thermal management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the bus bar is fully accommodated within the base member, then the electrical connection unit has a compact structure, but the heat dissipation property is insufficient
Solution Approach 1:
The bus bar is partially extracted from the base member through the through-hole, with part of it exposed on the outer peripheral surface. This extraction allows the bus bar to serve dual functions: electrical connection within the base member and heat dissipation outside, resolving the contradiction between compact structure and heat dissipation performance
Solution Approach 2:
The bus bar is designed to perform multiple functions simultaneously: it provides electrical connection when accommodated within the base member and acts as a heat dissipation structure when exposed on the outer peripheral surface. This multi-functionality resolves the contradiction by making the same component serve both structural and thermal management purposes
2Temperature
If the bus bar is exposed on the outer peripheral surface of the base member, then the heat dissipation property is improved, but the electrical connection reliability may be compromised
Solution Approach 1:
The bus bar is segmented into two functional zones: the portion accommodated within the base member ensures reliable electrical connection, while the portion exposed through the through-hole provides heat dissipation. This segmentation allows both electrical reliability and thermal performance to be optimized independently
Solution Approach 2:
The through-hole acts as an intermediary structure that enables the bus bar to transition from a fully internal configuration to a partially external one. This intermediary feature allows the bus bar to maintain electrical connection reliability within the base member while extending outside for heat dissipation, resolving the contradiction between connection reliability and heat dissipation
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 enhances the heat dissipation properties of the electrical connection unit, effectively managing thermal energy and improving overall performance.
Implementation Method 1
The bus bar includes a plate portion accommodated in the accommodation portion and extending along the flat surface portion. The plate portion includes an exposed portion exposed to outside of the base member on the second surface side.
Implementation Method 2
The exposed portion of the bus bar is exposed to outside of the base member, allowing heat dissipation to the surrounding environment through convective heat transfer.
Data Source
AI summary
The electrical connection unit includes a first electronic component, a base member, and a bus bar. The base member includes a flat surface portion having a plate shape or sheet shape. The flat surface portion has a first surface facing the first electronic component and a second surface located on a side opposite to the first surface. In a case where a thickness direction of the flat surface portion is a first direction, the flat surface portion includes an accommodation portion recessed in the first direction or penetrating the flat surface portion in the first direction. The bus bar includes a plate portion accommodated in the accommodation portion. The plate portion includes an exposed portion exposed to outside of the base member on the second surface side.