High-Voltage Connector Shielding Shell for Low-Resistance EMI Current Paths
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Solution Overview
Problem
Existing high-voltage connectors experience high loop resistance and poor electromagnetic shielding due to the folding structure of contact springs in their electromagnetic shielding shells, which impedes effective signal and current communication.
Innovation Solution
An electromagnetic shielding shell with elastic arms arranged between a main body and a connecting body, featuring protrusions for direct electrical contact, eliminating geometric folding of shielding current and reducing loop resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If contact springs are formed by folding backwards in the electromagnetic shielding shell, then the structure can be compact and easy to manufacture, but the loop resistance increases and electromagnetic shielding effect deteriorates
Solution Approach 1:
The patent inverts the traditional folding structure by using a straight elastic arm configuration. Instead of folding the contact spring backwards to achieve compactness, the patent uses a straight elastic arm that extends radially outward, eliminating the geometric folding that caused high loop resistance. This inversion of the structural approach resolves the contradiction by maintaining manufacturability while dramatically improving electromagnetic shielding performance.
Solution Approach 2:
The patent transitions from a folded two-dimensional contact spring structure to a three-dimensional straight elastic arm structure with radial protrusions. This dimensional change allows the shielding current to flow directly along the elastic arm without geometric folding, reducing loop resistance while maintaining structural compactness through the radial arrangement of multiple elastic arms.
2Device complexity
If contact springs are folded back to communicate shielding signals, then the connector structure can be simplified, but the loop resistance increases and shielding performance decreases
Solution Approach 1:
The patent inverts the traditional folded contact spring design by using straight elastic arms with radial protrusions. This inversion eliminates the geometric folding that created high loop resistance, thereby improving shielding performance while maintaining structural simplicity through the straightforward radial arrangement of elastic arms between the main body and connecting body.
3Reliability
If elastic arms with protrusions are used instead of folded contact springs, then electromagnetic shielding effect improves, but the structure becomes more complex
Solution Approach 1:
The patent merges the functions of the contact spring and the shielding current path into a single integrated elastic arm structure. The elastic arm simultaneously provides mechanical connection, electrical contact through its protrusion, and a smooth current path for shielding signals. This merging eliminates the need for separate folded contact springs and reduces overall structural complexity while improving shielding performance.
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
The design reduces loop resistance and enhances electromagnetic shielding effectiveness by ensuring a smooth current path through the elastic arms, improving the overall shielding performance.
Implementation Method 1
when the shielding current flows through the protrusions of the elastic arms, the shielding current can communicate to the main body and the connecting body respectively through two ends of each elastic arm
Data Source
AI summary
The present application provides a high-voltage connector and an electromagnetic shielding shell for a high-voltage connector, the electromagnetic shielding shell has a main body; a connecting body; and a plurality of elastic arms, arranged at intervals between the main body and the connecting body; an end of each of the elastic arms is connected to the main body, and the other end of each of the elastic arms is connected to the connecting body, each of the elastic arms is provided with a protrusion protruding in a radial direction, and the protrusion is configured for electrically contacting a shielding member of a mating connector. The electromagnetic shielding shell has the elastic arms arranged between the main body of the electromagnetic shielding shell and the connecting body, so that both ends of the elastic arms are connected with the electromagnetic shielding shell itself, and when the shielding current flows through the protrusions of the elastic arms, the shielding current can communicate to the main body and the connecting body respectively through two ends of each elastic arm, so that the shielding current does not fold back geometrically, and the shielding current path is smooth, which is beneficial to reduce the loop resistance of the electromagnetic shielding shell and improve the electromagnetic shielding effect.