Current measurement module

By designing local protruding areas and narrow-width areas on the conductor of the current measurement module, and configuring magnetic detection elements in the orthogonal direction, the problem of position shift of magnetic detection elements affecting frequency characteristics is solved, and the measurement accuracy and tolerance error are improved.

CN119936457APending Publication Date: 2025-05-06ASAHI KASEI MICRODEVICES CORP
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Patent Information

Application Number
CN202411551791.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2024-10-30
Filing Date
2024-11-01
Publication Date
2025-05-06

AI Technical Summary

Technical Problem

When the existing current measurement module detects current, the position offset of the magnetic detection element will affect the frequency characteristics, resulting in a decrease in the measurement accuracy.

Method used

A current measurement module is designed, and its conductor has two main body parts and two current path parts. The through hole forms a local protruding area on one side of the current path part to form a narrow area. The magnetic detection element is arranged in the orthogonal direction to detect the magnetic field generated by the current path portion.

Benefits of technology

Through this design, the tolerance error of the magnetic detection component to the position offset is improved, and the frequency characteristics and measurement accuracy of the current measurement module are enhanced.

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Abstract

The invention provides a current measuring module. A current measurement module is provided with: a conductor having two main body parts arranged side by side in a first direction and two current path parts arranged side by side with a through hole in a second direction orthogonal to the first direction and connecting the two main body parts; and a magnetic detection element having a magnetic induction surface for detecting a magnetic field generated by a current flowing through the two current path portions, the through-hole having a protruding portion that partially protrudes in the second direction only on one side of the two current path portions, and a narrow portion formed in the one side of the current path portion. The width of the narrow portion is the same as the width in the second direction of the current path portion on the other side, or is narrower than the width in the second direction of the current path portion on the other side.
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