A high-power liquid-cooled charging gun for new energy vehicles

By optimizing the layout structure in the liquid-cooled charging cable, forming an independent cooling circuit and tightly arranged wire structure, the existing liquid-cooled charging cables are solved, and a thinner, lighter and softer cable is achieved, improving the flexibility and experience of charging operations.

CN222698318UActive Publication Date: 2025-04-01LUOYANG ZHENGQI MACHINERY
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Patent Information

Application Number
CN202421573567.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-04
Publication Date
2025-04-01
Estimated Expiration
2034-07-04

AI Technical Summary

Technical Problem

The existing liquid-cooled charging cables have problems such as many gaps, too large wire diameters, difficulty in bending and poor flexibility in layout, which affects the experience and flexibility of charging operations.

Method used

By wrapping the DC+ charging cable, DC- charging cable, grounding cable and auxiliary cable inside the insulation of the liquid-cooled charging cable, and setting coolant channels and conductors in the DC+ charging cable and DC- charging cable, an independent cooling circuit is formed, and the layout structure of the cable is optimized to make it thin, light and soft.

Benefits of technology

It has achieved a reduction in the wire diameter by 30% with the same load-bearing capacity, reducing the cable weight, improving the flexibility and experience of charging operation, and improving the roundness and bending of the cable.

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Abstract

A high-power liquid-cooled charging gun for new energy vehicles includes a gun body, a liquid-cooled charging cable and a liquid-cooled electrode, and a liquid-cooled terminal is installed in the gun body. Two DC+ charging wires, two DC-charging wires, a grounding wire and a plurality of auxiliary wires are wrapped in the insulating outer sheath of the liquid-cooled charging cable. A connecting cavity is provided in the liquid-cooled terminal, and a liquid inlet and a liquid outlet are provided in the liquid-cooled electrode. The coolant enters one of the coolant channels from the liquid inlet, then flows into another coolant channel through the connecting cavity, and finally flows out from the liquid outlet, forming two sets of cooling circuits for independently cooling the DC+ charging cable and the DC-charging cable respectively. This high-power liquid-cooled charging gun optimizes the layout structure of the cable, increases the roundness of the cable, makes the cable thin, light and soft, and greatly improves the experience of the charging operation. This high-power liquid-cooled charging gun greatly reduces the wire diameter while safely carrying a current of 600A, and the wire diameter is only 23mm.
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