Gun head line detection device

By designing a charging gun circuit detection device and utilizing micro-resistance testing and insulation resistance testing, the accuracy and integrity issues of charging gun circuit detection were solved, automated testing was achieved, and production efficiency and safety were improved.

CN224176656UActive Publication Date: 2026-04-28NINGBO HENGDA GAO ELECTRONIC COMMERCE DEV CO LTD
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Patent Information

Application Number
CN202520889861.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-08
Publication Date
2026-04-28
Estimated Expiration
2035-05-08

AI Technical Summary

Technical Problem

During the production of charging guns, existing technologies struggle to effectively detect the accuracy and integrity of the wiring in the gun head, especially for European standard dual-head charging guns and charging guns with one gun head and one loose wire.

Method used

A gun-head circuit testing device was designed, comprising a frame, first and second connectors, a micro resistance tester, a safety tester, a control system, a high-voltage relay module, and an industrial control computer. The device ensures the correctness and integrity of the circuit wiring through micro resistance testing and insulation resistance testing, and realizes the switching of testing modes and data storage through the high-voltage relay module and the industrial control computer.

Benefits of technology

It enables automated testing of the accuracy and integrity of the charging gun circuitry, improving production efficiency and ensuring the safety and performance of the charging gun.

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Abstract

The utility model provides a gun head line detection device, relates to the technical field of detection devices, and aims to solve the technical problem that a gun head line needs to be detected in the production process of a charging gun in the prior art. A gun head line detection device comprises a rack, a first connecting base, a micro-resistance tester, a safety tester and a control system, the first connecting base is connected to the rack and connected with at least two first sockets used for being connected with a gun head, the micro-resistance tester is connected to the rack, the safety tester is connected to the rack, and the control system is connected with the micro-resistance tester. The control system is electrically connected with all the first sockets, the micro-resistance tester and the safety tester; the control system selects the micro-resistance tester to carry out micro-resistance testing on each line, and if the resistance value of the line resistor is smaller than a set value, wiring is correct; and then the control system selects the safety tester to test the insulation resistance of each line, and if the insulation resistance is greater than a set value, the line is not damaged.
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