Method for testing an assembly

The dynamic testing method for crimp connections in electrical machines accurately simulates operational stresses, enhancing reliability and reducing costs by isolating the assembly for efficient quality monitoring.

WO2026114454A1PCT designated stage Publication Date: 2026-06-04BAYERISCHE MOTOREN WERKE AG
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Patent Information

Application Number
PCT/DE2025/101051
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-11-26
Filing Date
2025-11-13
Publication Date
2026-06-04

AI Technical Summary

Technical Problem

Existing methods for testing crimp connections in electrical machines, such as those in traction motors, fail to simulate real-world stress conditions, leading to inaccurate predictions of service life and requiring complex, resource-intensive system tests.

Method used

A dynamic testing method that applies cyclic loading to crimp connections, simulating centrifugal forces and other operational stresses, allowing separate testing of assemblies without the entire system, using a device that monitors connection parameters under controlled conditions.

Benefits of technology

Enables precise determination of fatigue strength and load-bearing capacity, improving design reliability and reducing costs by allowing faster, more efficient quality monitoring and resource use.

✦ Generated by Eureka AI based on patent content.

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  • Figure DE2025101051_04062026_PF_FP_ABST
    Figure DE2025101051_04062026_PF_FP_ABST
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Abstract

Method for testing an assembly (2) for an electric machine, in particular an externally excited synchronous machine, comprising two electrical conductor elements (3, 4) which are connected to one another by a crimp connection (5), wherein the crimp connection (5) is cyclically loaded, in particular by applying a test force to one of the conductor elements (3, 4), wherein a connection parameter of the crimp connection (5) is determined.
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Citation Information

Patent Citations

  • Solder joint test setup and solder joint test procedure

    DE102017124255A1

  • Method and device for testing cable access connections

    DE3905856C1

  • Apparatus and process for testing and improving electrical and / or mechanical characteristics of an electrical connection

    US20150168479A1

  • Method and apparatus for crimping

    US4835855A