A liquid new energy automobile charging gun

Abstract

This invention discloses a liquid-cooled new energy vehicle charging gun capable of cooling the wire core and employing a single-inlet, single-outlet connection for the external water pipe, achieving a dual-inlet, dual-outlet cooling effect. The technical solution includes: a liquid-cooled new energy vehicle charging gun, comprising a gun head and a liquid-cooled wiring harness assembly connected to the gun head. The liquid-cooled wiring harness assembly comprises: a housing, consisting of a left housing and a right housing; a first cooling seat disposed within the housing, having two independently spaced first cooling chambers, with two first cooling pipe connectors at the front end respectively communicating with the first cooling chambers, and two first cooling pipes connected to each of the first cooling pipe connectors; a terminal block, with its front end disposed within the first cooling chamber of the first cooling seat and its rear end extending out of the housing; and a liquid inlet seat disposed on one side of the first cooling seat, with two second cooling pipe connectors at its lower end, and two second cooling pipes connected to each of the second cooling pipe connectors.

Description

Technical Field

[0001] This invention belongs to the field of new energy vehicles, and in particular relates to a liquid-cooled new energy vehicle charging gun. Background Technology

[0002] New energy vehicles still have shortcomings compared to traditional vehicles. For example, according to the current situation, even the fastest DC fast charging in the field of new energy vehicles still takes an average of 1 hour to fully charge, which is much longer than refueling, which only takes 5-10 minutes.

[0003] Therefore, to solve the above problems, charging equipment manufacturers are constantly increasing charging power to achieve fast charging and reduce charging time. However, high-current charging inevitably generates a lot of heat in the charging terminal components. As the terminal temperature continues to rise, the charging process will trigger temperature protection, causing charging to stop, and in severe cases, combustion may occur. Therefore, reducing the temperature of the terminal components during high-power charging is particularly important.

[0004] Currently, most new energy vehicle charging guns on the market use water cooling to cool the charging terminals. To improve the cooling effect, a two-inlet, two-outlet liquid cooling gun structure is typically used. The main drawbacks are: 1. It cannot cool the wire core; 2. It requires four external water pipes, making the connection cumbersome and prone to errors. Summary of the Invention

[0005] The technical problem to be solved by the invention is to provide a liquid-cooled new energy vehicle charging gun that can cool the wire core and adopts a single-inlet-single-outlet connection method for the external water pipe to achieve a two-inlet-two-outlet cooling effect.

[0006] To solve the above problems, the technical solution adopted by the invention includes:

[0007] A liquid-cooled charging gun for new energy vehicles includes a gun head and a liquid-cooled wiring harness assembly connected to the gun head, characterized in that the liquid-cooled wiring harness assembly includes:

[0008] The outer shell consists of a left shell and a right shell;

[0009] The first cooling seat is located inside the outer shell and has two independently spaced first cooling chambers. The front end has two first cooling pipe joints that are respectively connected to the first cooling chambers, and two first cooling pipes are respectively connected through the first cooling pipe joints.

[0010] The terminal block has its front end located inside the first cooling chamber of the first cooling base and its rear end extending out of the outer casing.

[0011] The liquid inlet seat is located on one side of the first cooling seat, and two second cooling pipe connectors are provided at the lower end. Two second cooling pipes are connected to the second cooling pipe connectors respectively.

[0012] The liquid outlet is located on the other side of the first cooling seat, and its inner cavity is connected to the two first cooling cavities of the first cooling seat respectively.

[0013] A liquid inlet connector is located on the end face of the outer casing, and its lower end is threadedly connected to the liquid inlet seat.

[0014] The liquid outlet connector is located on the end face of the outer shell, and its lower end is threadedly connected to the liquid outlet seat.

[0015] The cable is run through the first cooling pipe, and its end passes through the first cooling pipe connector and is connected to the terminal block.

[0016] An insulating sleeve is wrapped around the connection between the cable and the terminal block, with its front end aligned with the inner cavity of the first cooling pipe connector and its rear end sealed to the end of the first cooling base.

[0017] The liquid-cooled new energy vehicle charging gun is characterized in that: the front end of the insulating sleeve is provided with a first sealing ring and a first insulating bushing abutting against the first sealing ring; the end of the first insulating bushing is provided with a set of first support feet abutting against the inner wall of the first cooling pipe joint; a first channel for coolant to flow is formed between adjacent first support feet; and the rear end of the insulating sleeve is provided with a second sealing ring that is sealed to the end of the first cooling seat.

[0018] The liquid-cooled new energy vehicle charging gun is characterized in that: the liquid outlet seat includes an internal threaded interface and a liquid outlet chamber located at the lower end of the internal threaded interface; the inner cavity of the liquid outlet chamber is divided into a first liquid outlet chamber and a second liquid outlet chamber by a separating rib; the two side walls of the first cooling chamber of the first cooling seat are respectively provided with through holes communicating with the first liquid outlet chamber and the second liquid outlet chamber; and the end face of the liquid outlet chamber is provided with a fifth sealing ring.

[0019] The liquid-cooled new energy vehicle charging gun is characterized in that: a terminal partition is provided at the rear end of the first cooling base, and the two terminal blocks are isolated by the terminal partition.

[0020] The liquid-cooled new energy vehicle charging gun is characterized in that: both the liquid inlet connector and the liquid outlet connector are composed of an intermediate seat and an adapter. The lower end of the intermediate seat has an external thread. The adapter includes an adapter body, a third cooling pipe connector set at an angle on the upper end of the adapter body, and a core concentrically set in the adapter body. The core is inserted into the upper end of the intermediate seat. The side wall of the adapter body is provided with at least 4 circumferentially arranged positioning holes, and the adapter is provided with 4 positioning pins connected to the positioning holes.

[0021] The liquid-cooled new energy vehicle charging gun is characterized in that it further includes a cable sheath, the first cooling pipe and the second cooling pipe are both inserted inside the cable sheath, and the cable sheath is fixed to the outer shell by cable fasteners at the ends.

[0022] The liquid-cooled new energy vehicle charging gun is characterized in that the gun head includes:

[0023] The gun head housing is equipped with a DC terminal socket and an auxiliary terminal socket;

[0024] Auxiliary terminals are inserted into the auxiliary terminal insertion holes of the gun head housing;

[0025] The second cooling seat is installed at the rear end of the gun head housing and has two independently spaced second cooling chambers, with its front end abutting against the auxiliary terminal;

[0026] The front end of the rubber-coated DC terminal is inserted into the DC terminal insertion hole of the gun head housing, and the rear end is connected to the cable. After being covered with a rubber layer, it is placed in the second cooling chamber of the second cooling seat.

[0027] The second insulating bushing is located at the rear end of the rubber coating layer. It has a fourth sealing ring inside to seal the connection between the cable and the rubber coating layer. It has a second support foot at the end, and a second channel for coolant to flow through is formed between adjacent second support feet.

[0028] The rear cover is located at the rear end of the second cooling seat. The front end is provided with a third sealing ring, and the rear end is provided with two fourth cooling pipe connectors that are respectively connected to the first cooling pipe and two fifth cooling pipe connectors that are respectively connected to the second cooling pipe. The fourth cooling pipe connectors and the fifth cooling pipe connectors are both connected to the second cooling cavity of the second cooling seat.

[0029] The liquid-cooled new energy vehicle charging gun is characterized in that: the front end of the rear cover is provided with two guide pipes that are respectively connected to the fifth cooling pipe joint, and the guide pipes guide the coolant to the front end of the second cooling chamber of the second cooling seat.

[0030] The liquid-cooled new energy vehicle charging gun is characterized in that: the coated DC terminal is provided with a slot, and a C-shaped retaining spring is installed in the slot to fix it to the second cooling seat; the coated DC terminal is provided with a sixth sealing ring on both sides corresponding to the slot.

[0031] The liquid-cooled new energy vehicle charging gun is characterized in that: both ends of the rubber coating layer are provided with anti-foolproof protrusions.

[0032] The advantages of the liquid-cooled new energy vehicle charging gun of the present invention are as follows: 1. In addition to cooling the DC terminal inside the gun head, it can also cool the entire core of the cable and the terminal block, thereby greatly improving the cooling effect; 2. The external water pipe adopts a single-inlet and single-outlet connection method, which is connected to the liquid inlet connector and the liquid outlet connector respectively. While reducing the number of external water pipes, it can achieve a two-inlet and two-outlet cooling effect.

[0033] The present invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the liquid-cooled gun head of the present invention;

[0035] Figure 2 This is a schematic diagram of the liquid-cooled wiring harness assembly of the present invention;

[0036] Figure 3 This is an exploded view of the liquid-cooled wiring harness assembly of the present invention;

[0037] Figure 4 This is a cross-sectional view of the liquid-cooled wiring harness assembly of the present invention;

[0038] Figure 5 This is a schematic diagram showing the connection between the first cooling seat and the liquid outlet seat of the present invention;

[0039] Figure 6 This is a schematic diagram of the installation of internal parts of the liquid-cooled wiring harness assembly of the present invention;

[0040] Figure 7 This is a schematic diagram showing the installation between the internal components and the outer casing of the liquid-cooled wiring harness assembly of the present invention;

[0041] Figure 8 This is a schematic diagram of the connection between the terminal blocks of the present invention;

[0042] Figure 9 This is a schematic diagram of the structure of the first cooling seat of the present invention;

[0043] Figure 10 This is a schematic diagram of the liquid inlet seat of the present invention;

[0044] Figure 11 This is a schematic diagram of the structure of the first insulating bushing of the present invention;

[0045] Figure 12 This is a schematic diagram of the liquid outlet seat of the present invention;

[0046] Figure 13 This is a cross-sectional view of the liquid inlet connector or liquid outlet connector of the present invention;

[0047] Figure 14 This is a schematic diagram of the liquid inlet of the cold wire harness assembly of the present invention;

[0048] Figure 15 This is a schematic diagram of the liquid outlet of the cold wire harness assembly of the present invention;

[0049] Figure 16 This is an exploded view of the liquid-cooled nozzle of the present invention;

[0050] Figure 17 This is a cross-sectional view of the liquid cooling gun head of the present invention;

[0051] Figure 18 This is a schematic diagram of the structure of the back cover of the present invention;

[0052] Figure 19 This is a cross-sectional view of the second insulating bushing of the present invention;

[0053] Figure 20 This is a schematic diagram showing the connection between the cable and the insulated DC terminal of the present invention;

[0054] Figure 21 This is a schematic diagram of the lateral liquid inlet and outlet of the liquid cooling gun head of the present invention;

[0055] Figure 22 This is a schematic diagram of the longitudinal liquid inlet and outlet of the liquid cooling nozzle of the present invention. Detailed Implementation

[0056] Reference Figure 1-22As shown, the liquid-cooled new energy vehicle charging gun of the present invention includes a liquid-cooled gun head 1 and a liquid-cooled wiring harness assembly 2 connected to the liquid-cooled gun head 1. The liquid-cooled wiring harness assembly 2 includes: a housing 3, a first cooling seat 4, a terminal block 5, a liquid inlet seat 6, a liquid outlet seat 7, a liquid inlet connector 8, a liquid outlet connector 9, a cable 10, and an insulating sleeve 11. The housing 3 is composed of a left housing 12 and a right housing 13, which are fastened together by screws 58. The first cooling seat 4 is disposed inside the housing 3 and is fixed to it by a supporting rib structure inside the housing 3. The first cooling seat 4 has two independently spaced first cooling chambers 14. The front end of the first cooling seat 4 is integrally injection molded with two first cooling pipe connectors 15, which are respectively connected to the first cooling chambers 14. Two first cooling pipes 16 are respectively connected through the first cooling pipe connectors 15, and the first cooling pipes 16 serve as liquid outlet pipes. The front end of the terminal block 5 is located inside the first cooling chamber 14 of the first cooling seat 4, and the rear end of the terminal block 5 extends out of the outer casing 3 for connection to the input power supply on the charging pile. The liquid inlet seat 6 is located on one side of the first cooling seat 4 and is fastened with screws. The lower end of the liquid inlet seat 6 is provided with two second cooling pipe connectors 17, through which two second cooling pipes 18 are respectively connected, and the second cooling pipes 18 serve as liquid inlets. The liquid outlet seat 7 is located on the other side of the first cooling seat 4 and is fastened with screws. The inner cavity of the liquid outlet seat 7 is connected to the two first cooling chambers 14 of the first cooling seat 4. The end face of the liquid outlet seat 7 is provided with a fifth sealing ring 60 to achieve a seal with the first cooling seat 4. The liquid inlet main connector 8 is located on the end face of the outer casing 3, and the lower end of the liquid inlet main connector 8 is threadedly connected to the liquid inlet seat 6. The liquid outlet main connector 9 is located on the end face of the outer casing 3, and the lower end of the liquid outlet main connector 9 is threadedly connected to the liquid outlet seat 7. The liquid inlet connector 8 is used to connect to the liquid inlet main pipe of the charging pile water circulation system, and the liquid outlet connector 9 is used to connect to the liquid outlet main pipe of the charging pile water circulation system. The cable 10 passes through the first cooling pipe 16, leaving a channel for coolant to pass through. The end of the cable 10 passes through the first cooling pipe connector 15 and connects to the terminal block 5. Ideally, the cable 10 and the terminal block 5 are fixed by ultrasonic welding. The insulating sleeve 11 is wrapped around the connection between the cable 10 and the terminal block 5, and the front end of the insulating sleeve 11 is aligned with the inner cavity of the first cooling pipe connector 15, and the rear end of the insulating sleeve 11 is sealed to the end of the first cooling seat 4. With the above structure, there is another advantage: the first cooling seat 4, terminal block 5, liquid inlet seat 6, liquid outlet seat 7, liquid inlet connector 8, liquid outlet connector 9, cable 10 and insulating sleeve 11 can be assembled into a whole and then installed into the outer casing 3, which makes assembly and maintenance easier.

[0057] Preferably, the front end of the insulating sleeve 11 is provided with a first sealing ring 19 inside, and the front end of the insulating sleeve 11 is provided with a first insulating bushing 20 outside. The first insulating bushing 20 abuts against the rear end of the first sealing ring 19, and the first insulating bushing 20 is ideally hooked to the insulating sleeve 11 using a hook 61. The sealing between the cable 10 and the insulating sleeve 11 is achieved through the action of the first sealing ring 19 and the first insulating bushing 20. The end of the first insulating bushing 20 is provided with a set of first support feet 21 abutting against the inner wall of the first cooling pipe joint 15. A first channel 22 for coolant flow is formed between adjacent first support feet 21 to ensure normal coolant passage. The rear end of the insulating sleeve 11 is provided with a second sealing ring 23 that is sealingly connected to the end of the first cooling seat 4 to achieve a seal with the first cooling seat 4.

[0058] Preferably, the liquid outlet seat 7 includes an internal threaded interface 24 and a liquid outlet chamber 25 located at the lower end of the internal threaded interface 24, which is threadedly connected to the liquid outlet connector 9 through the threaded interface 24. The inner cavity of the liquid outlet chamber 25 is divided into a first liquid outlet chamber 27 and a second liquid outlet chamber 28 by a separating rib 26. The side walls of the two first cooling chambers 14 of the first cooling seat 4 are respectively provided with through holes 29 communicating with the first liquid outlet chamber 27 and the second liquid outlet chamber 28, thereby realizing independent circulation of water for the two first cooling pipes 16 and preventing mutual interference.

[0059] Preferably, the rear end of the first cooling base 4 is provided with a terminal partition 30, which is fastened with screws. The terminal partition 30 isolates the two terminal blocks 5 to prevent short circuits between the terminal blocks 5.

[0060] Preferably, both the inlet connector 8 and the outlet connector 9 are composed of an intermediate seat 31 and an adapter 32. The intermediate seat 31 has an external thread at its lower end. The adapter 32 includes an adapter body 33, a third cooling pipe connector 34 angled to the upper end of the adapter body 33, and a core 35 concentrically arranged within the adapter body 33. The core 35 is inserted into the upper end of the intermediate seat 31. The side wall of the adapter body 33 has four circumferentially arranged positioning holes 36, and the adapter 32 has four positioning posts 37 connected to the positioning holes 36. The adapter 32 is a one-piece molded plastic part with a certain degree of elasticity, allowing it to be installed in different directions on the upper end of the intermediate seat 31 as needed and fixed by the positioning posts 37, thus making it more flexible to use. Ideally, the angle between the third cooling pipe connector 34 and the adapter body 33 is 90 degrees to facilitate connection with external water pipes.

[0061] Preferably, the system also includes a cable sheath 38, within which both the first cooling pipe 16 and the second cooling pipe 18 pass to protect the cooling pipes and the cable. The cable sheath 38 is fixed to the outer casing 3 by cable fasteners 39 at its ends, which are rubber blocks.

[0062] Preferably, the liquid-cooled nozzle 1 includes: a nozzle housing 40, an auxiliary terminal 43, a second cooling base 44, a rubber-coated DC terminal 45, a second insulating bushing 46, and a rear cover 47. The nozzle housing 40 is provided with a DC terminal insertion hole 41 and an auxiliary terminal insertion hole 42. The auxiliary terminal 43 is inserted into the auxiliary terminal insertion hole 42 of the nozzle housing 40 and is used for signal detection, etc. The second cooling base 44 is installed at the rear end of the nozzle housing 40 and is fixed by hooks or screws. The second cooling base 44 is provided with two independently spaced second cooling chambers 48. The front end of the second cooling base 44 abuts against the auxiliary terminal 43 to prevent the auxiliary terminal 43 from retracting. The front end of the rubber-coated DC terminal 45 is inserted into the DC terminal insertion hole 41 of the nozzle housing 40. After the rear end of the rubber-coated DC terminal 45 is connected to the cable 10, a rubber coating layer 49 is provided and it is placed in the second cooling chamber 48 of the second cooling base 44. The rubber coating layer 49 provides insulation between the rear end of the rubber-coated DC terminal 45 and the cable 10 and the coolant. A second insulating bushing 46 is located at the rear end of the rubber coating layer 49 and is connected via a hook. The second insulating bushing 46 has a fourth sealing ring 59 inside to seal the connection between the cable 10 and the rubber coating layer 49. The end of the second insulating bushing 46 has a second support foot 50, and a second channel 501 for coolant flow is formed between adjacent second support feet 50 to ensure normal coolant passage. The rear cover 47 seals the rear end of the second cooling seat 44 and is secured with screws. The front end of the rear cover 47 has a third sealing ring 51, and the rear end of the rear cover 47 has two fourth cooling pipe connectors 52 connected to the first cooling pipe 16 and two fifth cooling pipe connectors 53 connected to the second cooling pipe 18. Both the fourth and fifth cooling pipe connectors 52 communicate with the second cooling cavity 48 of the second cooling seat 44. This allows for quick connection to the liquid-cooled wiring harness assembly 2 after assembly. In practical applications, the rear end of the liquid cooling gun head 1 should also be connected to a handle (not shown in the figure), the second insulating bushing 46 and the rear cover 47 are both located inside the handle, and the front end of the cable sheath 38 is also connected to the handle.

[0063] Preferably, the rear cover 47 has two guide pipes 54 at its front end, which are respectively connected to the fifth cooling pipe connector 53. The guide pipes 54 guide the coolant to the front end of the second cooling chamber 48 of the second cooling seat 44. This allows the coolant in the second cooling chamber 48 of the second cooling seat 44 to circulate from front to back, thereby further improving the cooling effect.

[0064] Preferably, the coated DC terminal 45 is provided with a slot 55, and a C-shaped retaining spring 56 is inserted into the slot 55 to fix it to the second cooling base 44, thereby improving the installation stability of the coated DC terminal 45. The coated DC terminal 45 is provided with a sixth sealing ring 62 at both ends corresponding to the slot 55, so as to achieve sealing between it and the second cooling base 44 and the gun head housing 40, respectively.

[0065] Preferably, the two ends of the rubber coating layer 49 are provided with anti-foolproof protrusions 57, and the second cooling seat 44 is provided with a unique corresponding groove to prevent incorrect installation of the rubber-coated DC terminal 45.

[0066] The above description is not intended to limit the invention in any way. Although the invention has been disclosed above with preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed structure and technical content to create equivalent embodiments without departing from the scope of the technical solution of the invention. However, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the invention without departing from the content of the technical solution of the invention shall still fall within the scope of the technical solution of the invention.

Claims

1. A liquid-cooled charging gun for new energy vehicles, comprising a liquid-cooled gun head (1) and a liquid-cooled wiring harness assembly (2) connected to the liquid-cooled gun head (1), characterized in that, The liquid-cooled wiring harness assembly (2) includes: The outer shell (3) consists of a left shell (12) and a right shell (13); The first cooling seat (4) is located inside the outer shell (3) and has two independently spaced first cooling chambers (14). The front end has two first cooling pipe joints (15) that are respectively connected to the first cooling chambers (14). Two first cooling pipes (16) are respectively connected through the first cooling pipe joints (15). The terminal block (5) is located in the first cooling chamber (14) of the first cooling seat (4) at its front end and extends out of the outer shell (3) at its rear end. The liquid inlet seat (6) is located on one side of the first cooling seat (4), and two second cooling pipe joints (17) are provided at the lower end. Two second cooling pipes (18) are connected to the second cooling pipe joints (17). The liquid outlet seat (7) is located on the other side of the first cooling seat (4), and its inner cavity is connected to the two first cooling chambers (14) of the first cooling seat (4); The liquid inlet connector (8) is located on the end face of the outer shell (3), and its lower end is threadedly connected to the liquid inlet seat (6); The liquid outlet connector (9) is located on the end face of the outer shell (3), and its lower end is threadedly connected to the liquid outlet seat (7); The cable (10) is run through the first cooling pipe (16), and its end passes through the first cooling pipe joint (15) and is connected to the terminal block (5); An insulating sleeve (11) is wrapped around the connection between the cable (10) and the terminal block (5), with its front end aligned with the inner cavity of the first cooling pipe joint (15) and its rear end sealed to the end of the first cooling seat (4). The liquid outlet seat (7) includes an internal threaded interface (24) and a liquid outlet chamber (25) located at the lower end of the internal threaded interface (24). The inner cavity of the liquid outlet chamber (25) is divided into a first liquid outlet chamber (27) and a second liquid outlet chamber (28) by a separating rib (26). The side walls of the two first cooling chambers (14) of the first cooling seat (4) are respectively provided with through holes (29) communicating with the first liquid outlet chamber (27) and the second liquid outlet chamber (28). The end face of the liquid outlet chamber (25) is provided with a fifth sealing ring (60). The liquid-cooled nozzle (1) includes: The gun head housing (40) is provided with a DC terminal plug hole (41) and an auxiliary terminal plug hole (42). Auxiliary terminal (43) is inserted into the auxiliary terminal insertion hole (42) of the gun head housing (40). The second cooling seat (44) is installed at the rear end of the gun head housing (40) and has two independently spaced second cooling chambers (48), with its front end abutting against the auxiliary terminal (43). The front end of the rubber-coated DC terminal (45) is inserted into the DC terminal insertion hole (41) of the gun head housing (40), and the rear end is connected to the cable (10). After that, a rubber coating layer (49) is provided and placed in the second cooling chamber (48) of the second cooling seat (44). The second insulating bushing (46) is located at the rear end of the rubber layer (49), and a fourth sealing ring (59) is provided inside to seal the connection between the cable (10) and the rubber layer (49). The end is provided with a second support foot (50), and a second channel (501) for coolant to flow through is formed between adjacent second support feet (50). The rear cover (47) is sealed at the rear end of the second cooling seat (44). The front end is provided with a third sealing ring (51), and the rear end is provided with two fourth cooling pipe joints (52) that are respectively connected to the first cooling pipe (16) and two fifth cooling pipe joints (53) that are respectively connected to the second cooling pipe (18). The fourth cooling pipe joints (52) and the fifth cooling pipe joints (53) are both connected to the second cooling chamber (48) of the second cooling seat (44). The rear cover (47) has two guide pipes (54) at the front end that are respectively connected to the fifth cooling pipe joint (53). The guide pipes (54) guide the coolant to the front end of the second cooling chamber (48) of the second cooling seat (44).

2. The liquid-cooled new energy vehicle charging gun according to claim 1, characterized in that: The front end of the insulating sleeve (11) is provided with a first sealing ring (19) and a first insulating bushing (20) abutting against the first sealing ring (19). The end of the first insulating bushing (20) is provided with a set of first support feet (21) abutting against the inner wall of the first cooling pipe joint (15). A first channel (22) for coolant to flow through is formed between adjacent first support feet (21). The rear end of the insulating sleeve (11) is provided with a second sealing ring (23) that is sealed to the end of the first cooling seat (4).

3. The liquid-cooled new energy vehicle charging gun according to claim 1, characterized in that: The rear end of the first cooling seat (4) is provided with a terminal partition (30) to isolate the two terminal blocks (5).

4. The liquid-cooled new energy vehicle charging gun according to claim 1, characterized in that: It also includes a cable sheath (38), in which the first cooling pipe (16) and the second cooling pipe (18) are both inserted. The rear end of the cable sheath (38) is fixed to the outer shell (3) by cable fasteners (39).

5. The liquid-cooled new energy vehicle charging gun according to claim 1, characterized in that: The coated DC terminal (45) is provided with a slot (55). By inserting a C-shaped retaining spring (56) into the slot (55), it is fixed to the second cooling seat (44). The coated DC terminal (45) is provided with a sixth sealing ring (62) on both sides corresponding to the slot (55).

6. The liquid-cooled new energy vehicle charging gun according to claim 1, characterized in that: The two ends of the adhesive layer (49) are provided with anti-fooling protrusions (57).

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