Compact Power Conversion Design with Wedge Inserts
Here’s PatSnap Eureka !
Summary
Problems
The existing power conversion apparatuses for automobiles, railway equipment, and industrial applications are bulky due to the complex structure required for cooling and insulation, making them difficult to downsize and assemble efficiently.
Innovation solutions
A power conversion apparatus design featuring a circuit body with a base member having a concave portion and a wedge system, where the wedge is inserted into the concave portion to apply plane pressure, reducing the need for screws and springs, and enhancing assemblability by using a substrate with integrated heat transfer and cooling surfaces.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If multiple power semiconductor modules are mounted on a single heat-dissipating body, then cooling performance and electric performance are maintained, but the structure becomes complicated and the volume increases
Why choose this principle:
The patent combines the heat-dissipating body, pressing member, and insulating member into a single integrated base member. This merging eliminates the need for separate components while maintaining the functions of heat dissipation, mechanical pressing, and electrical insulation, thereby reducing structural complexity and volume without compromising cooling performance
Principle concept:
If multiple power semiconductor modules are mounted on a single heat-dissipating body, then cooling performance and electric performance are maintained, but the structure becomes complicated and the volume increases
Why choose this principle:
The base member serves multiple functions simultaneously: it acts as a heat-dissipating body, a pressing member to apply stress to circuit bodies, and an insulating member to provide electrical insulation. This multi-functionality reduces the number of separate components needed, simplifying the overall structure while maintaining all required performance characteristics
Application Domain
Data Source
AI summary:
A power conversion apparatus design featuring a circuit body with a base member having a concave portion and a wedge system, where the wedge is inserted into the concave portion to apply plane pressure, reducing the need for screws and springs, and enhancing assemblability by using a substrate with integrated heat transfer and cooling surfaces.
Abstract
A power conversion apparatus includes: a circuit body including a switching device; a base member forming a first concave portion and a cooling surface; and a wedge inserted in the first concave portion of the base member. The first concave portion of the base member is formed by a substrate portion forming the cooling surface, a first wall disposed on the opposite side of the substrate portion from the cooling surface, and an intermediate portion interconnecting the first wall and the substrate portion. The first wall forms an insertion space for insertion of the wedge, and a heat transfer plane forming a heat dissipating surface and a heat transfer path of the circuit body. The intermediate portion is plastically deformed by inserting the wedge into the insertion space, thus causing the first wall to be displaced toward the location of the circuit body.