Novel internal cooling bare terminal structure of national standard direct current liquid cooling charging gun

Abstract

The utility model belongs to the technical field of charging guns, and particularly relates to a novel internal cooling bare terminal structure of a national standard direct current liquid cooling charging gun, which comprises a bare terminal, the bare terminal is provided with a cooling cavity, the cooling cavity is filled with insulating oil, one side of the cooling cavity far away from the bare terminal is provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are communicated with the bare terminal. The liquid inlet and the liquid outlet are in threaded connection with connectors respectively, each connector comprises a first threaded part, a second threaded part and a connecting part, a sealing ring is arranged between each first threaded part and the corresponding second threaded part, the two first threaded parts are in threaded connection with the liquid inlet and the liquid outlet respectively, and the two second threaded parts are in threaded connection with the liquid outlet respectively. The two sealing rings are respectively sealed with openings of the liquid inlet and the liquid outlet, the two second threaded parts are in threaded connection with a mounting sleeve, and a fixing groove is formed between the mounting sleeve and the second threaded parts, so that better heat exchange efficiency is realized, and the safety of the terminal is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of charging guns, and in particular to a novel internal cooling bare terminal structure of a national standard DC liquid-cooled charging gun. Background Art

[0002] Currently, the most common internal liquid cooling solutions for national standard DC charging guns on the market use rubber-coated terminals and isolated cables for cooling. The isolated cables have separate pipes for coolant circulation. This approach allows for the use of non-insulated coolants, but the cooling effect is relatively poor. Another approach uses bare terminals and oil-coated copper cables for cooling. This uses non-insulated oil as the coolant, which has a relatively good cooling effect and is direct cooling. However, the disadvantage is that the conductors inside the cables contain a lot of impurities, making non-insulated oil more conductive over long-term operation. Utility Model Content

[0003] The purpose of the utility model is to provide a new national standard DC liquid-cooled charging gun internal cooling bare terminal structure.

[0004] To achieve the above-mentioned purpose, an embodiment of the present utility model provides a new national standard DC liquid-cooled charging gun internal cooling bare terminal structure, including a bare terminal, the bare terminal is provided with a cooling cavity, the cooling cavity is filled with insulating oil, the cooling cavity is provided with a liquid inlet and a liquid outlet on the side away from the bare terminal, the liquid inlet and the liquid outlet are respectively threadedly connected with connectors, and the two connectors each include a first threaded portion, a second threaded portion and a connecting portion, a sealing ring is provided between the first threaded portion and the second threaded portion, the two first threaded portions are respectively threadedly connected to the liquid inlet and the liquid outlet, the two sealing rings are respectively sealed with the openings of the liquid inlet and the liquid outlet, the two second threaded portions are threadedly connected with mounting sleeves, and a fixing groove is formed between the mounting sleeve and the second threaded portion.

[0005] Preferably, the cooling cavity is provided with a through hole outwardly, and a sealing cap is connected to the inner thread of the through hole.

[0006] Preferably, a sealing gasket is provided at the perforated opening, and the head of the sealing cap abuts against the sealing gasket.

[0007] Preferably, a sealing gasket is detachably mounted at the opening of the liquid inlet.

[0008] Preferably, a sealing rubber ring is detachably mounted at the opening of the liquid outlet.

[0009] The above one or more technical solutions in the new national standard DC liquid-cooled charging gun internal cooling bare terminal structure provided by the embodiment of the utility model have at least one of the following technical effects:

[0010] By setting up bare terminals, a better heat conduction effect is achieved compared to rubber-coated terminals. When in use, insulating oil is connected to the liquid inlet pipe and the liquid outlet pipe respectively through the connecting parts of the two connectors. The hydraulic oil is input into the cooling cavity through the liquid inlet through the liquid inlet pipe to cool the bare terminals. The insulating oil can avoid the conductive effect during the cooling process of the bare terminals. At the same time, the contact between the insulating oil and the bare terminals has a better heat conduction effect than the rubber-coated terminals. The insulating oil after absorbing heat enters the liquid outlet pipe through the liquid outlet and is output and circulated outward, achieving better heat exchange efficiency and improving the safety of the terminals. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the overall structure of the internal cooling bare terminal structure of the new national standard DC liquid-cooled charging gun provided by an embodiment of the utility model;

[0012] Figure 2 An exploded view of the internal cooling bare terminal structure of the new national standard DC liquid-cooled charging gun provided by an embodiment of the present utility model;

[0013] Figure 3 This is a schematic diagram of the structure of the terminals of the new national standard DC liquid-cooled charging gun with internal cooling bare terminal structure provided by an embodiment of the present utility model.

[0014] Among them, the reference numerals in the figures are:

[0015] 1- bare terminal, 11- cooling chamber, 12- liquid inlet, 121- with sealing gasket, 13- liquid outlet, 131- sealing rubber ring, 14- perforation, 141- sealing cap, 142- sealing gasket, 2- connector, 21- first threaded portion, 22- second threaded portion, 23- connecting portion, 24- sealing ring, 25- mounting sleeve. DETAILED DESCRIPTION

[0016] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0017] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0019] In the embodiments of the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0020] In one embodiment of the present invention, Figures 1 to 3 As shown, a new national standard DC liquid-cooled charging gun internal cooling bare terminal structure is provided, including a bare terminal 1, the bare terminal 1 is provided with a cooling cavity 11, the cooling cavity 11 is filled with insulating oil, and the cooling cavity 11 is provided with a liquid inlet 12 and a liquid outlet 13 on the side away from the bare terminal 1, the liquid inlet 12 and the liquid outlet 13 are respectively threadedly connected with a connector 2, and the two connectors 2 include a first threaded portion 21, a second threaded portion 22 and a connecting portion 23, a sealing ring 24 is provided between the first threaded portion 21 and the second threaded portion 22, the two first threaded portions 21 are respectively threadedly connected to the liquid inlet 12 and the liquid outlet 13, the two sealing rings 24 are respectively sealed with the openings of the liquid inlet 12 and the liquid outlet 13, and the two second threaded portions 22 are threadedly connected with a mounting sleeve 25, and a fixing groove is formed between the mounting sleeve 25 and the second threaded portion 22.

[0021] Furthermore, the cooling chamber 11 is provided with a through-hole 14 facing outward, and a sealing cap 141 is connected to the inner thread of the through-hole 14. A sealing gasket 142 is provided at the opening of the through-hole 14, and the head of the sealing cap 141 abuts against the sealing gasket 142. Specifically, the through-hole 14 can be used for maintenance of the cooling chamber 11. During installation, the sealing gasket 142 is installed at the outer opening of the through-hole 14, and the sealing cap 141 is screwed into the through-hole 14, so that the brim of the sealing cap 141 contacts the sealing gasket 142, and the sealing gasket 142 is clamped between the brim of the sealing cap 141 and the through-hole 14. By controlling the depth of the sealing cap 141 screwed into the through-hole 14, the compression of the sealing gasket 142 is controlled, thereby improving the sealing effect.

[0022] Furthermore, a sealing gasket 121 is detachably installed at the opening of the liquid inlet 12. A sealing rubber ring 131 is detachably installed at the opening of the liquid outlet 13. Specifically, when installing the connector 2, by installing the two connectors 2 in the liquid inlet 12 and the liquid outlet 13 respectively, in this process, by placing the sealing gasket 121 and the sealing rubber ring 131 in the openings of the liquid inlet 12 and the liquid outlet 13 respectively, and then screwing the first threaded parts 21 of the two connectors 2 into the liquid inlet 12 and the liquid outlet 13 respectively, finally making the sealing rings 24 on the two connectors 2 contact and compress with the sealing gasket 121 and the sealing rubber ring 131 respectively, so as to achieve sealing of the liquid inlet 12 and the liquid outlet 13, and then the next Step 1: Insert the two mounting sleeves 25 into the outer side of the connecting portion 23 to form two fixed grooves, and insert the liquid inlet pipe and the liquid outlet pipe into the two fixed grooves respectively. Finally, by continuously screwing the two mounting sleeves 25 into the two second threaded portions 22 respectively, the tightening openings on the inner sides of the mounting sleeves 25 can gradually increase the pressure on the pipe openings of the liquid inlet pipe and the liquid outlet pipe, thereby improving the stability of the liquid inlet pipe and the liquid outlet pipe. It is worth noting that the sealing gasket 121, the sealing rubber ring 131, and the sealing gasket 142 mentioned in this article are all panel-type O-rings with strong pressure-bearing capacity and better sealing effect.

[0023] Working principle: By setting the bare terminal 1, the heat conduction effect is better than that of the rubber-coated terminal. When in use, the insulating oil is connected to the liquid inlet pipe and the liquid outlet pipe respectively through the connecting parts 23 of the two connectors 2. The hydraulic oil is input into the cooling chamber 11 through the liquid inlet port 12 through the liquid inlet pipe to cool the bare terminal 1. The insulating oil can avoid the conductive effect during the cooling process of the bare terminal 1. At the same time, the contact between the insulating oil and the bare terminal 1 has a better thermal conductivity effect than the rubber-coated terminal. The insulating oil after absorbing heat enters the liquid outlet pipe through the liquid outlet port 13 and is output outward for circulation, achieving better heat exchange efficiency and improving the safety of the terminal.

[0024] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A new national standard DC liquid-cooled charging gun with internal cooling bare terminal structure, characterized by: It includes a bare terminal, which is provided with a cooling cavity filled with insulating oil. The cooling cavity is provided with a liquid inlet and a liquid outlet on the side away from the bare terminal. The liquid inlet and the liquid outlet are respectively threadedly connected with connectors. The two connectors each include a first threaded portion, a second threaded portion and a connecting portion. A sealing ring is provided between the first threaded portion and the second threaded portion. The two first threaded portions are respectively threadedly connected to the liquid inlet and the liquid outlet. The two sealing rings are respectively sealed with the openings of the liquid inlet and the liquid outlet. The two second threaded portions are threadedly connected to mounting sleeves. A fixing groove is formed between the mounting sleeve and the second threaded portion.

2. The novel national standard DC liquid-cooled charging gun internal cooling bare terminal structure according to claim 1 is characterized by: The cooling cavity is provided with a through hole outwardly, and a sealing cap is connected to the inner thread of the through hole.

3. The novel national standard DC liquid-cooled charging gun internal cooling bare terminal structure according to claim 2 is characterized by: A sealing gasket is provided at the perforation opening, and the head of the sealing cap abuts against the sealing gasket.

4. The novel national standard DC liquid-cooled charging gun internal cooling bare terminal structure according to claim 1 is characterized by: A sealing gasket is detachably mounted on the opening of the liquid inlet.

5. The novel national standard DC liquid-cooled charging gun internal cooling bare terminal structure according to claim 1 is characterized by: A sealing rubber ring is detachably mounted at the opening of the liquid outlet.

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