Liquid-cooled charging gun terminal structure

Abstract

This utility model relates to the field of new energy charging gun technology, specifically to a liquid-cooled charging gun terminal structure, including a terminal body and a liquid-cooled sheath. The terminal body includes a terminal mating area, a sheath fitting area, a wire connector area, and a crimping part connected in sequence. The liquid-cooled sheath is fitted around the outer periphery of the sheath fitting area and has a first liquid passage. The side wall of the sheath fitting area has a first liquid passage hole communicating with the first liquid passage. The side wall of the wire connector area near the crimping part has a second liquid passage hole. The terminal body has a second liquid passage connecting the first liquid passage hole and the second liquid passage hole. When this liquid-cooled charging gun terminal structure is used in a liquid-cooled circulation system, the coolant flows forward / backward along the first liquid passage, the first liquid passage hole, the second liquid passage, and the second liquid passage hole, cooling the terminal body. Furthermore, the second liquid passage extends into the terminal mating area, which is more conducive to the effective cooling of the terminal mating area and improves the cooling effect.

Description

Technical Field

[0001] This utility model relates to the field of new energy charging gun technology, specifically to a liquid-cooled charging gun terminal structure. Background Technology

[0002] To improve charging current, new energy vehicle charging guns employ liquid cooling. Cables embedded in liquid-cooled pipes are used inside the charging gun, combined with a liquid-cooled circulation system for efficient heat dissipation. Liquid-cooled charging guns are categorized into two types based on whether the metal cables are in contact with the coolant: immersion type and isolation type. Existing immersion-type structures offer better cooling, but the terminals are more expensive, and terminal temperature measurements are typically placed on the cable sheath, resulting in lower accuracy. Isolation-type charging guns, on the other hand, have complex terminal structures and manufacturing processes, lower reliability, and poorer cooling performance. More importantly, they cannot effectively cool the terminals with the highest resistance at the connection point. Summary of the Invention

[0003] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a liquid-cooled charging gun terminal structure.

[0004] The objective of this utility model is achieved through the following technical solution: a liquid-cooled charging gun terminal structure, comprising a terminal body and a liquid-cooled sheath sleeved outside the terminal body. The terminal body comprises a terminal mating area, a sheath fitting area, a wire connector area, and a crimping part connected in sequence. The liquid-cooled sheath sleeved around the outer periphery of the sheath fitting area. The liquid-cooled sheath has a first liquid passage channel. The side wall of the sheath fitting area has a first liquid passage hole communicating with the first liquid passage channel. The side wall of the wire connector area near the crimping part has a second liquid passage hole. The terminal body has a second liquid passage channel communicating with the first liquid passage hole and the second liquid passage hole. The second liquid passage channel extends into the terminal mating area.

[0005] Preferably, the side wall of the sheath fitting area near the wire connector area has a sheath positioning ridge protruding therefrom, and one side of the liquid-cooled sheath abuts against the sheath positioning ridge.

[0006] Preferably, the fitting area of ​​the protective sleeve is provided with an annular groove on the outer periphery of the first liquid passage hole, and a sealing element is sandwiched between the inner wall of the liquid cooling protective sleeve and the annular groove.

[0007] Preferably, a threaded through hole is provided on one side of the liquid-cooled sheath, and the liquid-cooled charging gun terminal structure further includes a screw, which is threadedly connected to the threaded through hole and abuts against the sheath fitting area.

[0008] Preferably, the liquid cooling sheath extends to a connector portion that communicates with the first liquid passage, and the connector portion is fixedly connected to a liquid passage pipe that communicates with the first liquid passage.

[0009] Preferably, both the structure of the connector portion and the structure of the wire sheath connector area are pagoda-shaped connector structures.

[0010] Preferably, the liquid cooling sheath has a receiving through hole for accommodating the temperature sensor; the liquid cooling sheath is a thermally conductive metal sheath.

[0011] The beneficial effects of this utility model are as follows: The liquid-cooled charging gun terminal structure of this utility model includes a terminal body and a liquid-cooled sheath fitted over the terminal body. The terminal body includes a terminal mating area, a sheath fitting area, a wire connector area, and a crimping part connected in sequence. The liquid-cooled sheath is fitted over the outer periphery of the sheath fitting area and has a first liquid passage. The side wall of the sheath fitting area has a first liquid passage hole communicating with the first liquid passage. The side wall of the wire connector area near the crimping part has a second liquid passage hole. The terminal body has a second liquid passage connecting the first liquid passage hole and the second liquid passage hole, and the second liquid passage extends into the terminal mating area. When this liquid-cooled charging gun terminal structure is used in a liquid-cooled circulation system, the coolant flows forward / backward along the first liquid passage, the first liquid passage hole, the second liquid passage, and the second liquid passage hole, cooling the terminal body. Furthermore, the second liquid passage extending into the terminal mating area is more conducive to effective cooling of the terminal mating area and improves the cooling effect. Attached Figure Description

[0012] Figure 1 This is a cross-sectional schematic diagram of the present invention;

[0013] Figure 2 This is a partial structural schematic diagram of the present invention;

[0014] Figure 3 yes Figure 2 A schematic diagram of the decomposition process;

[0015] Figure 4 yes Figure 2 A breakdown diagram from another perspective.

[0016] The attached figures are labeled as follows: 1. Liquid cooling sheath; 2. First liquid passage; 3. Terminal body; 31. Terminal mating area; 32. Sheath fitting area; 33. Wire sheath connector area; 34. Crimping part; 4. First liquid passage hole; 5. Second liquid passage hole; 6. Second liquid passage; 7. Cable conductor; 8. Wire sheath; 9. Third liquid passage; 10. Sheath positioning ridge; 11. Annular positioning groove; 12. Seal; 13. Threaded through hole; 14. Screw; 15. Connector part; 16. Liquid passage pipe; 17. Receiving through hole; 18. Temperature sensor. Detailed Implementation

[0017] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0018] like Figure 1-4 As shown, a liquid-cooled charging gun terminal structure includes a terminal body 3 and a liquid-cooled sheath 1 sleeved outside the terminal body 3. The terminal body 3 includes a terminal mating area 31, a sheath fitting area 32, a wire sheath connector area 33, and a crimping part 34 connected in sequence. The liquid-cooled sheath 1 is sleeved on the outer periphery of the sheath fitting area 32. The liquid-cooled sheath 1 has a first liquid passage 2. The side wall of the sheath fitting area 32 has a first liquid passage hole 4 communicating with the first liquid passage 2. The side wall of the wire sheath connector area 33 near the crimping part 34 has a second liquid passage hole 5. The terminal body 3 has a second liquid passage 6 communicating with the first liquid passage hole 4 and the second liquid passage hole 5. The second liquid passage 6 extends into the terminal mating area 31.

[0019] When the liquid-cooled charging gun terminal structure is connected to the liquid-cooled circulation system, the coolant flows in the forward / reverse direction along the first liquid passage 2, the first liquid passage 4, the second liquid passage 6 and the second liquid passage 5 to cool the terminal body 3. The second liquid passage 6 extends into the terminal insertion area 31, which is more conducive to the effective cooling of the terminal insertion area 31 and improves the cooling effect.

[0020] Furthermore, the liquid-cooled charging gun terminal structure also includes a cable conductor 7 crimped to the crimping portion 34 and an electrical wire tubing 8 fixedly connected at one end to the outer periphery of the wire connector area 33. The crimping portion 34 and the cable conductor 7 are housed in the electrical wire tubing 8. A third liquid passage 9, communicating with the second liquid passage hole 5, is provided between the electrical wire tubing 8 and the crimping portion 34, and between the electrical wire tubing 8 and the cable conductor 7. In use, when the coolant flows through the third liquid passage 9, the cable conductor 7 is immersed in the coolant, resulting in better cooling of the cable conductor 7. Preferably, the cable conductor 7 is a copper conductor.

[0021] Furthermore, a sheath positioning ridge 10 protrudes from one side wall of the sheath fitting area 32 near the wire connector area 33. One side of the liquid-cooled sheath 1 abuts against the sheath positioning ridge 10 so that after the liquid-cooled sheath 1 is fitted into the terminal body 3, it is positioned against the sheath positioning ridge 10, which facilitates installation.

[0022] Furthermore, the protective sleeve fitting area 32 is provided with an annular groove 11 on the outer periphery of the first liquid passage hole 4, and a sealing element 12 is sandwiched between the inner wall of the liquid cooling sleeve 1 and the annular groove 11 to prevent the coolant from leaking along the gap between the liquid cooling sleeve 1 and the protective sleeve fitting area 32.

[0023] Furthermore, a threaded through hole 13 is provided on one side of the liquid-cooled sheath 1, and the liquid-cooled charging gun terminal structure also includes a screw 14. The screw 14 is threadedly connected to the threaded through hole 13 and abuts against the sheath fitting area 32. The liquid-cooled sheath 1 is installed by tightening the screw 14, which is simple and convenient.

[0024] Furthermore, the liquid cooling sheath 1 extends to have a connector 15 that communicates with the first liquid passage 2, and the connector 15 is fixedly connected to a liquid passage pipe 16 that communicates with the first liquid passage 2.

[0025] Furthermore, both the structure of the connector 15 and the structure of the wire insulation connector area 33 are pagoda-shaped connectors, which helps to improve the installation efficiency of the wire insulation tube 8 entering the wire insulation connector area 33 and the liquid pipe 16 entering the connector 15.

[0026] Furthermore, the liquid-cooled sheath 1 has a receiving through hole 17 for accommodating the temperature sensor 18; the liquid-cooled sheath 1 is a thermally conductive metal sheath, and compared with the traditional immersion terminal structure, the thermal conductivity of the thermally conductive metal sheath in this embodiment is more conducive to the higher accuracy of temperature acquisition by the temperature sensor 18 in actual use.

[0027] In this embodiment, the coolant flows in the forward direction along the first liquid passage 2, the first liquid passage 4, the second liquid passage 6, the second liquid passage 5, and the third liquid passage 9. In other embodiments, the coolant may also flow in the reverse direction along the same channels. The direction of coolant flow (forward or reverse) depends primarily on whether the outlet of the liquid cooling circulation system is connected to the liquid pipe 16 or the electrical conduit 8. The liquid cooling circulation system is existing technology and will not be elaborated upon here.

[0028] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this utility model are within the protection scope of this utility model.

Claims

1. A liquid-cooled charging gun terminal structure, comprising a terminal body, characterized in that: It also includes a liquid-cooled sheath fitted over the terminal body. The terminal body includes a terminal mating area, a sheath fitting area, a wire sheath connector area, and a crimping part connected in sequence. The liquid-cooled sheath is fitted over the outer periphery of the sheath fitting area. The liquid-cooled sheath has a first liquid passage. The side wall of the sheath fitting area has a first liquid passage hole communicating with the first liquid passage. The side wall of the wire sheath connector area near the crimping part has a second liquid passage hole. The terminal body has a second liquid passage connecting the first liquid passage hole and the second liquid passage hole. The second liquid passage extends into the terminal mating area.

2. The liquid-cooled charging gun terminal structure according to claim 1, characterized in that: The side wall of the sheath assembly area near the wire connector area has a sheath positioning ridge protruding from it, and one side of the liquid-cooled sheath abuts against the sheath positioning ridge.

3. The liquid-cooled charging gun terminal structure according to claim 1, characterized in that: The fitting area of ​​the protective sleeve is provided with an annular groove on the outer periphery of the first liquid passage hole, and a sealing element is sandwiched between the inner wall of the liquid cooling sleeve and the annular groove.

4. The liquid-cooled charging gun terminal structure according to claim 1, characterized in that: A threaded through hole is provided on one side of the liquid-cooled sheath, and the liquid-cooled charging gun terminal structure also includes a screw, which is threadedly connected to the threaded through hole and abuts against the fitting area of ​​the sheath.

5. The liquid-cooled charging gun terminal structure according to claim 1, characterized in that: The liquid-cooled sheath extends to a connector that communicates with the first liquid passage, and the connector is fixedly connected to a liquid pipe that communicates with the first liquid passage.

6. The liquid-cooled charging gun terminal structure according to claim 5, characterized in that: Both the structure of the connector and the structure of the wire sheath connector area are pagoda-shaped connectors.

7. The liquid-cooled charging gun terminal structure according to claim 1, characterized in that: The liquid-cooled sheath has a receiving through hole for accommodating the temperature sensor; the liquid-cooled sheath is a thermally conductive metal sheath.

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