Bus bar connector

The connector addresses the challenge of connecting an aluminum bus bar to a printed circuit board by using a conductive frame and contact plate with spring fingers, ensuring reliable and repeatable electrical connections despite the issues of oxidation and mechanical compatibility.

WO2025064630A1 Publication Date: 2025-03-27ENNOVI IND INC
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Patent Information

Application Number
PCT/US2024/047421
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-09-22
Filing Date
2024-09-19
Publication Date
2025-03-27

AI Technical Summary

Technical Problem

Connecting an aluminum bus bar to a printed circuit board is challenging due to the rapid oxidation of aluminum, which affects conductivity, and the fragility and flexibility of the printed circuit board, especially under space constraints.

Method used

A connector with an electrically conductive frame and a contact plate is designed to securely connect an aluminum bus bar to a printed circuit board. The frame has slots for receiving the edge of the PCB and mounting structures for securement to the bus bar, while the contact plate has spring fingers to engage the PCB and ensure electrical connection.

Benefits of technology

The connector provides a reliable and repeatable electrical connection between the aluminum bus bar and the printed circuit board, overcoming the challenges of oxidation and mechanical compatibility, and is suitable for use in electric vehicles.

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Abstract

A connector for connecting an aluminum bus bar to a printed circuit board. The connector includes a channel-shaped frame with a top wall and spaced-apart side walls. The side walls of the frame are secured to the bus bar. A contact plate is disposed inside the frame and is secured to the top wall of the frame. The contact plate has a planar body adjoining the inner surface of the top wall and a plurality of loop-shaped spring fingers projecting downwardly therefrom. An edge portion of the printed circuit board extends through slots in the side walls of the frame. Inside the frame, at least one conductive pad of the printed circuit board is engaged by the spring fingers of the contact plate to electrically connect the printed circuit board to the contact plate.
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