KR-102964059-B1 - HIGH-VOLTAGE CONNECTOR HAVING INTERLOCK SYSTEM

Abstract

An invention relating to a high-voltage connector having an interlock system is disclosed. The disclosed high-voltage connector having an interlock system is characterized by comprising: a housing; and an interlock unit provided in the housing, which generates a signal for interrupting the flow of current by short-circuiting when heat of a temperature exceeding a set value is received from the outside.

Inventors

• 김정남

Assignees

• 주식회사 경신

Dates

Publication Date

20260513

Application Date

20240812

Claims (5)

1. Housing; and It includes an interlock unit provided in the above housing that generates a signal to block the flow of current by short-circuiting when heat of a temperature higher than a set value is received from the outside. The above interlock unit is a casing; An interlock pin fixed inside the casing such that a portion of it protrudes outside the casing, and which undergoes deformation due to heat transferred; and A high-voltage connector with an interlock system applied, characterized by including a short bar that is fixed inside the casing and contacts or is released from contact with the interlock pin depending on the temperature of heat transferred to the interlock pin.
2. delete
3. In Article 1, A high-voltage connector with an interlock system applied, characterized in that the housing is provided with a holder to accommodate and secure the casing.
4. In claim 1 or 3, the interlock pin is, An exposed pin capable of conducting electricity, which remains exposed to the outside of the above casing; A reinforcing pin that is attached in contact with the exposed pin or manufactured integrally with the exposed pin to reinforce and prevent deformation of the exposed pin; An internal pin extending from the above-mentioned exposed pin and located inside the casing, capable of conducting electricity; and A high-voltage connector with an interlock system applied, characterized by including a deformable pin positioned opposite to the inner pin, with one side constrained to the exposed pin or the reinforcing pin along the axial direction, and one side in contact with the short bar, which deforms to push the inner pin in a direction separated from the short bar when heat exceeding a set value is transferred.
5. In Article 1, A high-voltage connector with an interlock system applied, characterized in that the above-mentioned housing is provided with a hook to be fixed to a fixed body.

Description

High-voltage connector with interlock system The present invention relates to a high-voltage connector with an interlock system, and more specifically, to a high-voltage connector with an interlock system that applies an interlock module to disconnect the circuit of the interlock module when the internal or external temperature of the housing of the vehicle high-voltage connector rises, thereby preventing damage to the housing and cable and the occurrence of fire, and thereby ensuring the safety of the entire vehicle high-voltage system. Generally, a power relay box (PRA) is a component mounted on a battery pack that controls (turns ON/OFF) the battery pack's power to the outside and monitors the current and temperature status. The power relay box is configured with a circuit that allows electricity to flow by having the positive (+) and negative (-) power of the battery pack connected to one side, and the inverter positive (INV+) power and inverter negative (INV-) power connected to an external unit (including a junction block) on the other side. In particular, conventional power relay boxes lack an interlock structure, making it impossible to monitor whether the connector is connected. This results in various safety issues, such as sparks caused by incomplete connections at the main terminals when high-voltage connectors are connected. The interlock circuit verifies the connection status of high-voltage connectors through current flow and authorizes the interruption and operation of the relay, thereby ensuring worker safety regarding the connection of high-voltage connectors. A related background technology is Korean Registered Patent Publication No. 0482372 (January 10, 2017, Title of Invention: Power Relay Assembly). The technical configuration described above is provided as background technology to aid in understanding the present invention and does not constitute prior art widely known in the technical field to which the present invention belongs. FIG. 1 is a perspective view of a high-voltage connector to which an interlock system according to one embodiment of the present invention is applied. FIG. 2 is an exploded perspective view showing the interlock unit separated from a high-voltage connector to which an interlock system according to one embodiment of the present invention is applied. FIG. 3 is a rear exploded perspective view showing the interlock unit separated from a high-voltage connector to which an interlock system according to one embodiment of the present invention is applied. FIG. 4 is a cross-sectional view of a high-voltage connector to which an interlock system according to one embodiment of the present invention is applied. FIG. 5 is an exploded perspective view of an interlock unit according to one embodiment of the present invention. FIG. 6 is an enlarged cross-sectional view of an interlock unit according to one embodiment of the present invention. FIG. 7 is a cross-sectional view showing the state in which an interlock is performed of an interlock unit according to one embodiment of the present invention. Hereinafter, an embodiment of a high-voltage connector to which an interlock system according to the present invention is applied will be described with reference to the attached drawings. In this process, the thickness of lines or the size of components shown in the drawings may be exaggerated for the clarity and convenience of explanation. Furthermore, the terms described below are defined considering their functions in the present invention, and these may vary depending on the intention or convention of the user or operator. Therefore, the definitions of these terms should be based on the content throughout this specification. FIG. 1 is a perspective view of a high-voltage connector with an interlock system applied according to an embodiment of the present invention, FIG. 2 is an exploded perspective view with an interlock unit separated from a high-voltage connector with an interlock system applied according to an embodiment of the present invention, FIG. 3 is a rear exploded perspective view with an interlock unit separated from a high-voltage connector with an interlock system applied according to an embodiment of the present invention, and FIG. 4 is a longitudinal cross-sectional view of a high-voltage connector with an interlock system applied according to an embodiment of the present invention. FIG. 5 is an exploded perspective view of an interlock unit according to one embodiment of the present invention, FIG. 6 is an enlarged longitudinal cross-sectional view of an interlock unit according to one embodiment of the present invention, and FIG. 7 is a cross-sectional view showing the state in which the interlock of the interlock unit according to one embodiment of the present invention is performed. Referring to FIGS. 1 to 7, a high-voltage connector (100) to which an interlock system according to one embodiment of the present invention is applied includes a housing (1