Confluence split type self-positioning cold plate joint and self-positioning method

By designing a split-type self-positioning cold plate joint, the problems of airtightness and production complexity of cold plate joints are solved, achieving efficient heat exchange and safe operation, reducing costs, simplifying the installation process, and making it suitable for passenger vehicle battery thermal management systems.

CN121993472APending Publication Date: 2026-05-08马鞍山纳百川热交换器有限公司
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Patent Information

Application Number
CN202610195669.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-11
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

In existing passenger vehicle battery thermal management systems, the cold plate joints have airtightness issues after the threaded holes and bolts are brazed, and the production and installation process is complex, making it difficult to meet the requirements of pressure and temperature resistance scenarios, and the cost is high.

Method used

The design adopts a split-type self-positioning cold plate joint, with the first and second joints connected by threaded holes and bolts for fastening and brazing. Combined with positioning protrusions and sealing rings, the joint achieves self-positioning and sealing connection on the cold plate, supporting modular production and large-scale manufacturing.

Benefits of technology

It improves the heat exchange efficiency and safety of cold plate joints, reduces the unit manufacturing cost, simplifies the installation and maintenance process, meets the requirements of pressure and temperature resistance scenarios, and has the ability to resist earthquakes, impacts, fire and explosion, ensuring safe operation in extreme environments.

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Abstract

The invention discloses a confluence split type self-positioning cold plate connector and a self-positioning method, and belongs to the technical field of passenger car battery thermal management, the confluence split type self-positioning cold plate connector comprises a cold plate composed of a flat plate and a cooling runner, one end of the cold plate is provided with a connector structure, and the connector structure is located on the end face of the side, away from the cooling runner, of the flat plate; the connector structure comprises a first connector and a second connector, and the first connector and the second connector are connected in a sealed mode after being fastened and brazed through threaded holes and bolts. The problem that an existing cold plate connector is not airtight after being fastened and brazed through a threaded hole and a bolt is solved. The cold plate connector is designed in a standardized mode, the cold plate connector is supported to be firmly brazed on the cold plate, the internal structure of the standardized cold plate connector is designed, the occupied space of a connecting pipe is reduced, the heat exchange efficiency capacity is improved, the requirements of pressure-resistant and temperature-resistant scenes are met, the single body manufacturing cost is reduced through modular production and large-scale manufacturing, and the installation, operation and maintenance process is simplified; labor and time investment is reduced, and economical efficiency is improved.
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