connector

The connector design uses a thicker busbar section as a heat storage area to manage terminal temperature without additional components, addressing excessive heating and reducing complexity and costs.

JP2026107266APending Publication Date: 2026-06-30YAZAKI CORP
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
YAZAKI CORP
Filing Date
2024-12-18
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Connectors used for charging electric vehicles face excessive temperature rises due to Joule heating during rapid charging, necessitating dedicated heat storage components that complicate production and increase costs.

Method used

A connector design where the first busbar's thickness at the connection to the second busbar is greater than at the connection to the terminal, utilizing this thicker section as a heat storage area to absorb heat without additional components, and allowing the second fastener's engagement without a separate nut.

Benefits of technology

This design suppresses rapid temperature rises in terminals during high heat generation, preventing the temperature from reaching unsafe limits and reduces component count by integrating the heat storage function into the busbar, thus maintaining safety and cost-effectiveness.

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    Figure 2026107266000001_ABST
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Abstract

To provide a connector that can suppress excessive rise in the operating temperature of the terminals without using special heat storage components or the like. [Solution] The connector 1 comprises a terminal 10, a first busbar 20 connected to the terminal 10, a first fastener 51 for fastening the terminal 10 and the first busbar 20, a second busbar 30 connected to the first busbar 20, a second fastener 52 for fastening the first busbar 20 and the second busbar 30, and a housing 40 for housing the terminal 10. The thickness of the first busbar 20 at a first location 21 fastened to the first fastener 51 and connected to the terminal 10 is less than the thickness of the first busbar 20 at a second location 22 fastened to the second fastener 52 and connected to the second busbar 30, and the second location 22 functions as a heat storage area.
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