New energy automobile liquid cooling charging gun

Abstract

The utility model relates to a liquid cooling charging gun for a new energy automobile, two independent cooling pipes are arranged in an inner cavity of a gun shell and are coaxial with two main terminals respectively, each cooling pipe comprises a main body shell which is shaped like a Chinese character'ji 'and is internally provided with a through cavity, and the peripheral end of each main body shell is provided with an opening; the rear end of the main terminal is inserted into a horizontal front end opening in the lower portion of the main body shell, an opening in the rear end of the lower portion of the main body shell is connected with an input pipeline, an opening in the inner cavity of the main body shell close to one side of the main terminal is sealed by a heat conduction cylinder, and a temperature sensor is arranged between the main terminal and the heat conduction cylinder. Each main terminal easy to heat corresponds to one independent cooling pipe, the internal path of the cooling pipe is simple, the cooling liquid circulation line is single, the process is smooth, and the heat exchange efficiency is improved. The temperature sensor is arranged between the main terminal and the cooling pipe, and the flow speed in the cooling pipe can be adjusted according to temperature feedback, so that the temperature reduction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicles, and in particular to a liquid-cooled charging gun for new energy vehicles. Background Art

[0002] With the increasing popularity of new energy vehicles, the charging guns that match them have become widely used. However, the long charging time of electric vehicles is an inevitable drawback and a problem that needs to be solved in the long term. The charging gun generates heat during the charging process, resulting in low charging power and increased charging time. Heat generated by the current in the conductive metal of the charging gun is inevitable. Cooling is generally achieved by adding cooling pipes. However, to cool multiple terminals, the cooling pipes have complex flow paths, which leads to turbulent flow within the cooling pipes and poor heat exchange. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a liquid-cooled charging gun for new energy vehicles to solve the problem of heating and poor cooling effect of the charging gun.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A new energy vehicle liquid-cooled charging gun includes a gun housing, a front end of the gun housing is connected to a charging plug, an inner cavity of the plug is provided with two main terminals and multiple secondary terminals, and the inner cavity of the gun housing is provided with two independent cooling pipes coaxially with the two main terminals. The cooling pipe includes a main shell in the shape of an "up" character and a through cavity inside. The four ends of the main shell are set as openings. The rear ends of the main terminals are inserted into the lower horizontal front opening of the main shell. The lower rear end opening of the main shell is connected to the input pipe. The opening on one side of the inner cavity of the main shell near the main terminal is sealed with a heat-conducting tube. A temperature sensor is provided between the main terminal and the heat-conducting tube. One end of the heat-conducting tube opens to one side of the input pipe. The top opening of the main shell is sealed with a headless screw. The upper horizontal rear end opening of the main shell is connected to the output pipe. The output pipe and the input pipe are arranged relatively parallel to each other up and down. The coolant flows from the input pipe and enters the heat-conducting tube in the lower horizontal inner cavity of the main shell, then flows upward into the vertical inner cavity of the main shell and flows out from the horizontal output pipe.

[0006] As a preferred embodiment, one end of a sleeve is threadedly connected to the lower rear end opening of the main shell, the input pipe is sleeved on the outer circumference of the sleeve, and a cover pipe is sleeved on the outer circumference of the input pipe near the main shell.

[0007] As a preferred embodiment, an adapter is sleeved on the outer circumference of the connecting end of the output pipe, and the adapter is threadedly connected to the corresponding opening of the main body shell.

[0008] As a preferred embodiment, the opening of the heat-conducting tube extends to the junction of the upper side wall close to the input end and the vertical side wall on the output end side in the inner cavity of the main body shell.

[0009] As a preferred embodiment, a waterproof ring is provided at the mounting point between the plug and the gun housing, a circuit board connected to the internal terminals is provided on the top of the gun housing, the top of the circuit board is covered with a waterproof sticker, the rear of the gun housing is a handle, the rear end of the handle is a cable, and a cable pressure block is provided on the cable.

[0010] The beneficial effects of this utility model are: each heat-prone main terminal corresponds to an independent cooling tube, the internal path of the cooling tube is simple, the coolant circulation line is single, the process is smooth, and the heat exchange efficiency is improved. A temperature sensor is installed between the main terminal and the cooling tube. The flow rate inside the cooling tube can be adjusted based on temperature feedback to improve the temperature reduction efficiency. Even when the charging gun is charging at high power, the temperature can be timely reduced to ensure stable charging technology. The narrow aisle space between the upper opening of the heat conducting tube inside the cooling tube and the inner wall of the cooling tube can increase the pressure of the coolant. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0012] Figure 1 This is a schematic diagram of the exploded structure of the utility model;

[0013] Figure 2 This is a cross-sectional view of the cooling pipe of the present utility model;

[0014] Figure 3 This is a schematic diagram of the cooling pipe matching of the present utility model;

[0015] Figure 4 This is a schematic diagram of the appearance of the charging gun of the present utility model;

[0016] Figures 1 to 4 Explanation of the reference numerals in the accompanying drawings: 1. Cable; 2. Cable clamp; 3. Handle; 4. Circuit board; 5. Waterproof sticker; 6. Gun housing; 7. Cooling tube; 8. Main terminal; 9. Waterproof ring; 10. Terminal clamp; 11. Secondary terminal; 12. Plug; 71. Main housing; 72. Sleeve; 73. Input pipe; 74. Cover tube; 75. Output pipe; 76. Adapter; 77. Headless screw; 78. Heat-conducting tube; 79. Temperature sensor. DETAILED DESCRIPTION

[0017] The specific implementation scheme of the present utility model is described in detail below with reference to the accompanying drawings.

[0018] like Figures 1 to 4The liquid-cooled charging gun for new energy vehicles shown in the figure includes a gun housing 6, the front end of the gun housing 6 is connected to a charging plug 12, and the inner cavity of the plug 12 is provided with two main terminals 8 and multiple secondary terminals 11. The inner cavity of the gun housing 6 is coaxially provided with two independent cooling pipes 7 with the two main terminals 8. The cooling pipe 7 includes a main shell 71 in the shape of an "up" with a through cavity inside. The four ends of the main shell 71 are set as openings. The rear end of the main terminal 8 is inserted into the lower horizontal front end opening of the main shell 71. The lower rear end opening of the main shell 71 is connected to the input pipe 73. The inner cavity of the main shell 71 The opening on one side close to the main terminal 8 is sealed with a heat-conducting tube 78. A temperature sensor 79 is provided between the main terminal 8 and the heat-conducting tube 78. One end of the heat-conducting tube 78 opens toward one side of the input pipe 73. The top opening of the main shell 71 is sealed with a headless screw 77. The upper horizontal rear end opening of the main shell 71 is connected to the output pipe 75. The output pipe 75 and the input pipe 73 are arranged relatively parallel to each other up and down. The coolant flows from the input pipe 73 into the heat-conducting tube 78 in the horizontal inner cavity at the lower part of the main shell 71, then flows upward into the vertical inner cavity of the main shell 71 and flows away from the horizontal output pipe 75.

[0019] Specifically, a cooling tube 7 is provided at the rear end of each main terminal 8. The internal pipelines of the two cooling tubes 7 are not connected. The cooling tubes 7 cool the main terminals 8 one-to-one, which makes the cooling efficiency higher. A temperature sensor is provided between the rear end of the main terminal 8 and the cooling tube 7. According to the temperature feedback, the flow rate of the coolant inside the cooling tube 7 can be changed to improve the efficiency of heat exchange.

[0020] like Figure 2 The lower rear end opening of the main housing 71 is threadedly connected to one end of a sleeve 72, an input pipe 73 is sleeved on the outer circumference of the sleeve 72, and a cover pipe 74 is sleeved on the outer circumference of the input pipe 73 near the main housing 71. This facilitates disassembly and connection and ensures a good sealing effect.

[0021] The outer circumference of the connection end of the output pipe 75 is provided with an adapter 76, which is threadedly connected to the corresponding opening of the main housing 71. The connection method is simple and occupies a small volume.

[0022] The opening of the heat-conducting tube 78 extends to the junction of the upper sidewall near the input end and the vertical sidewall on the output end of the inner cavity of the main housing 71. The heat-conducting tube 78 is made of a metal material with high thermal conductivity. The extended opening increases the contact area of ​​the coolant. The narrow passage between the upper opening of the heat-conducting tube 78 and the inner wall of the cooling tube 7 increases the coolant pressure, stabilizing the coolant flow.

[0023] In addition, a waterproof ring 9 is provided at the installation point between the plug 12 and the gun housing 6. A circuit board 4 connected to the internal terminal is provided on the top of the gun housing 6. The top of the circuit board 4 is covered with a waterproof sticker 5. The rear part of the gun housing 6 is a handle 3. The rear end of the handle 3 is a cable 1, and a cable pressure block 2 is provided on the cable 1.

[0024] The working process of this utility model is as follows:

[0025] As shown in Figures 1-4, when using this charging gun, plug the connector at the other end of cable 1 into the charging pile, hold the handle 3, and insert the plug 12 into the charging port of the electric vehicle. The temperature sensor 79 detects the temperature of the main terminal 8, and the coolant power device connected to the cooling pipe 7 adjusts the speed. The coolant inside the cooling pipe 7 flows to cool the main terminal 8.

[0026] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some embodiments of its application, and are not intended to limit the present invention. It should be noted that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A liquid-cooled charging gun for a new energy vehicle, comprising a gun housing (6), a charging plug (12) connected to the front end of the gun housing (6), two main terminals (8) and a plurality of secondary terminals (11) being provided in the inner cavity of the plug (12), characterized in that: Two independent cooling pipes (7) are coaxially arranged in the inner cavity of the gun housing (6) and the two main terminals (8), respectively. The cooling pipe (7) includes a main shell (71) in the shape of an "up" character with a through cavity inside. The four ends of the main shell (71) are set as openings. The rear end of the main terminal (8) is inserted into the lower horizontal front end opening of the main shell (71). The lower rear end opening of the main shell (71) is connected to the input pipe (73). The opening on one side of the inner cavity of the main shell (71) close to the main terminal (8) is sealed with a heat conducting tube (78). Between the main terminal (8) and the heat conducting tube (78) A temperature sensor (79) is provided, one end of the heat-conducting tube (78) opens toward one side of the input pipe (73), the top opening of the main shell (71) is sealed with a headless screw (77), the upper horizontal rear end opening of the main shell (71) is connected to the output pipe (75), and the output pipe (75) and the input pipe (73) are arranged parallel to each other in the upper and lower parts. The coolant flows from the input pipe (73) into the heat-conducting tube (78) in the horizontal inner cavity at the lower part of the main shell (71), flows upward into the vertical inner cavity of the main shell (71), and flows away from the horizontal output pipe (75).

2. The new energy vehicle liquid-cooled charging gun according to claim 1, characterized in that: One end of a sleeve (72) is threadedly connected to the rear end opening of the lower portion of the main housing (71), an input pipe (73) is sleeved on the outer circumference of the sleeve (72), and a cover pipe (74) is sleeved on the outer circumference of the input pipe (73) near the main housing (71).

3. The new energy vehicle liquid-cooled charging gun according to claim 1, characterized in that: An adapter (76) is sleeved on the outer circumference of the connection end of the output pipe (75), and the adapter (76) is threadedly connected to a corresponding opening of the main housing (71).

4. The new energy vehicle liquid-cooled charging gun according to claim 1, characterized in that: The opening of the heat-conducting tube (78) extends to the junction of the upper side wall close to the input end and the vertical side wall on the output end in the inner cavity of the main body shell (71).

5. The new energy vehicle liquid-cooled charging gun according to claim 1, characterized in that: A waterproof ring (9) is provided at the mounting position between the plug (12) and the gun housing (6); a circuit board (4) communicating with the internal terminals is provided on the top of the gun housing (6); the top of the circuit board (4) is covered with a waterproof sticker (5); the rear of the gun housing (6) is a handle (3); the rear end of the handle (3) is a cable (1); and a cable pressing block (2) is provided on the cable (1).

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