Integrated Pressing Member Assembly for Electrical Device Alignment

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Solution Overview

Problem

In electric or hybrid vehicle applications, the alignment between the pressing member and the capacitive block in electrical equipment is often misaligned, reducing the effectiveness of heat dissipation and complicating the manufacturing process due to the presence of multiple electrical devices with varying positioning constraints.

Innovation Solution

An assembly comprising an electrical device with a pressing member integrated on one side, held by a retaining part that encloses the pressing member around its peripheral portion, ensuring proper alignment and secure attachment before assembly, and transmitting forces to maintain constant contact with the cooling surface.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If guide pins are used to align the pressing member and electrical device, then alignment precision is improved, but device complexity increases due to multiple alignment constraints

Engineering Contradiction:

Improvealignment precisionVSAvoiddevice complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The pressing member is integrated directly with the electrical device, combining two previously separate components (pressing member and electrical device) into a single unit. This eliminates the need for separate guide pins and alignment mechanisms, reducing device complexity while maintaining alignment precision through the inherent integration of the components

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The pressing member is pre-assembled with the electrical device before mounting on the frame. This preliminary assembly ensures proper alignment is built into the structure itself, eliminating the need for complex alignment procedures during final assembly and reducing the number of alignment constraints that must be satisfied

Inventive Principle:

Principle #10Preliminary action

2Ease of manufacture

If the pressing member is mounted separately on the frame, then ease of manufacture is improved, but misalignment risk increases reducing pressing effectiveness

Engineering Contradiction:

Improveease of manufactureVSAvoidalignment precision

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The pressing member and electrical device are merged into a single integrated assembly. This ensures that the pressing member is always correctly positioned relative to the electrical device, eliminating misalignment risks while maintaining ease of manufacture through the simplified single-unit assembly approach

Inventive Principle:

Principle #5Merging (Combining)

3Manufacturing precision

If multiple guide pins are used for alignment, then alignment precision is improved, but the manufacturing constraint increases

Engineering Contradiction:

Improvealignment precisionVSAvoidmanufacturing productivity

Core Design Contradiction:

Manufacturing precisionVSProductivity

Solution Approach 1:

By integrating the pressing member with the electrical device, the invention eliminates the need for multiple guide pins and alignment operations. This single integrated assembly can be manufactured and assembled more quickly, improving manufacturing productivity while maintaining alignment precision through the inherent structural integration

Inventive Principle:

Principle #5Merging (Combining)

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 solution prevents misalignment issues during assembly and operation, ensuring effective heat dissipation and simplifying the manufacturing process by maintaining constant contact between the electrical device and the cooling surface, while allowing greater design freedom for the pressing member.

Implementation Method 1

at least one pressing member positioned on a second face of the electrical device opposite the first face, said pressing member being intended to be compressed and to participate in the pressing said electrical device onto said surface

Methodology Applied

Scientific EffectMechanical Force: Mechanical Force

Implementation Method 2

The generation of heat by Joule effect can then become significant at the risk of damaging the electrical equipment of the vehicle

Methodology Applied

Scientific EffectThermal Conduction: Conduction (thermal)

Data Source

PatentEP3672383B1Assembly comprising an electrical device, a cladding member and a part for maintaining the cladding member

Publication Date: 2022.08.03 VALEO SIEMENS EAUTOMOTIVE FRANCE SAS

Figure 1
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Figure 4~6

AI summary

The invention relates to an assembly comprising: - at least one electrical device 1 including a first face 2 intended to be pressed against a surface, - at least one pressing member positioned on a second face of the electrical device 1 opposite the first face 2, said pressing member being intended to participate in pressing said electrical device 1 onto said surface, - at least one retaining piece 6 which holds said pressing member onto the second face of said electrical device 1 by being fixed around the pressing member on a peripheral portion 7 of the electrical device 1.