CN218197944U

CN218197944U - Charging gun head, charging gun and electric vehicle charging device

Info

Publication number: CN218197944U
Application number: CN202222082914.XU
Authority: CN
Inventors: 杜青林; 张强; 徐文军; 赵雨桐; 杨腾
Original assignee: Shenzhen Woer New Energy Electric Technology Co Ltd
Current assignee: Shenzhen Woer New Energy Electric Technology Co Ltd
Priority date: 2022-08-08
Filing date: 2022-08-08
Publication date: 2023-01-03
Anticipated expiration: 2032-08-08

Abstract

The utility model discloses a rifle head charges rifle head, rifle and electric automobile charging device, wherein, the rifle head of rifle of charging includes shell, mount pad, cooling module and terminal subassembly, and the mount pad includes pedestal and grafting piece, and the pedestal is located in the shell to be equipped with two at least groove of stepping down, grafting piece is located between two groove of stepping down; the cooling assembly is provided with an inserting groove, and the inserting block is inserted in the inserting groove; the terminal assemblies are arranged on two opposite sides of the main body part and are connected to the shell through the abdicating grooves; the terminal assembly, the cooling assembly, the shell and the seat body are enclosed to form a glue pouring groove. The utility model discloses a set up the inserting groove on plug block, cooling module on the mount pad for the assembly between cooling module and mount pad and the shell is more simple and convenient, encloses with terminal subassembly, cooling module, shell and pedestal simultaneously and closes the formation encapsulating groove, can pour into heat-conducting colloid in the encapsulating groove, thereby has improved the radiating efficiency of the rifle head that charges.

Description

Charging gun head, charging gun and electric vehicle charging device

Technical Field

The utility model relates to a battery charging outfit technical field, in particular to rifle head charges, rifle and electric automobile charging device charge.

Background

With the popularization of electric vehicles, the development of charging devices for electric vehicles is becoming more and more important. Charging guns are used as important components, and a plurality of mature products are available on the market at present. In order to improve the charging speed, the charging time is shortened, the user experience is better, and the charging current and the charging power of the charging gun to the load are bound to be increased. In the charging process of the electric automobile, a large amount of heat is generated at the connecting part of the conducting wire and the power terminal, so that the temperature is increased, the charging efficiency is further reduced, the charging gun is greatly damaged by high temperature, and even fire hazard is caused by overhigh temperature; therefore, the heat dissipation structure can be arranged to dissipate heat of the charging gun in the related art, but the heat dissipation structure is complex, the production cost is high, the assembly time is long, and the quick charging is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a rifle head charges, rifle and electric automobile charging device charge sets up the inserting groove on through setting up the inserted block on the mount pad, cooling module for the assembly between cooling module and mount pad and the shell is more simple and convenient, encloses with terminal subassembly, cooling module, shell and pedestal simultaneously and closes formation encapsulating groove, can pour into heat-conducting colloid in the encapsulating groove, thereby has improved the radiating efficiency of the rifle head that charges.

In order to achieve the above object, the utility model provides a rifle head charges, the rifle head that charges includes:

a housing;

the mounting seat comprises a seat body and an inserting block, the seat body is arranged in the shell and is provided with at least two abdicating grooves, and the inserting block is positioned between the two abdicating grooves;

the cooling assembly is provided with an insertion groove, and the insertion block is inserted in the insertion groove; and

at least two terminal assemblies, wherein two the terminal assembly sets up the both sides that the cooling module is relative to pass through the groove of stepping down connect in the shell, the groove of stepping down with the internal wall surface of shell encloses and closes and form the encapsulating groove.

In an embodiment of the present application, the cooling assembly includes:

the cooling body is internally provided with a cooling flow channel for flowing of a cooling medium, the cooling body is provided with an upper end face, a lower end face and a side peripheral face, the upper end face and the lower end face are arranged oppositely, the side peripheral face of the cooling body, the abdicating groove and the inner wall face of the shell are enclosed to form the glue pouring groove, and the inserting groove penetrates through the upper end face and the lower end face; and

and the at least two liquid cooling pipes are arranged on the upper end surface of the cooling main body and are communicated with the cooling flow channel.

In an embodiment of this application, the side global of cooling body is including setting up two cooling surfaces relatively and connecting two the installation face of cooling surface, at least one the installation face is equipped with the fixed slot, the extending direction of fixed slot with the inserting groove is the same, two the cooling surface with the groove of stepping down with the internal face of shell encloses to close and forms the encapsulating groove.

In an embodiment of this application, cooling unit still includes first mounting and leak detector, the cooling main part with the junction of liquid cooling pipe is equipped with the water injection well choke, the liquid cooling pipe peg graft in the water injection well choke, first mounting is fixed in the water injection well choke, leak detector joint in first mounting orientation the surface of water injection well choke to be located the water injection well choke with liquid cooling union coupling department.

In an embodiment of the application, the pedestal is provided with a second fixing part, the rifle head of the rifle charges still includes the control mainboard, the control mainboard joint in the second fixing part, and with leak detector electric connection.

In an embodiment of the present application, the terminal assembly includes a power terminal, the power terminal includes a main body segment and a connecting segment disposed below the main body segment, and the connecting segment is bent toward the heat dissipation surface to form a heat dissipation plate;

the inner wall of shell is equipped with the mounting hole, the main part section passes the groove of stepping down, and plug-in the mounting hole, the linkage segment towards the terminal surface butt of main part section in the groove wall of stepping down the groove.

In an embodiment of the present application, the terminal assembly further includes:

a first lead, the first lead and the connecting section being soldered;

the flange plate is arranged between the main body section and the connecting section, the surface of the flange plate facing the connecting section abuts against the wall of the abdicating groove, and the surface of the flange plate facing away from the connecting section abuts against the wall of the mounting hole; and

and the sealing ring is abutted against one surface of the flange plate, which deviates from the connecting section, and is abutted against the hole wall of the mounting hole.

In an embodiment of the present application, the main body segment and the connection segment are welded;

or, the terminal subassembly still includes the copper bar subassembly, the main part section with the linkage segment passes through the copper bar subassembly is connected.

The utility model also provides a rifle charges, including seal housing, handle and the foretell rifle head that charges, seal housing connect in the rifle head that charges, the handle set up in seal housing is last.

The utility model also provides an electric automobile charging device, including above-mentioned rifle that charges.

The gun head of the charging gun comprises a shell, a mounting seat, a cooling assembly and a terminal assembly, wherein the mounting seat comprises a seat body and an inserting block, the seat body is arranged in the shell and provided with at least two abdicating grooves, and the inserting block is positioned between the two abdicating grooves; the cooling assembly is provided with an inserting groove, and the inserting block is inserted in the inserting groove; through set up the inserting block on the mount pad, set up the inserting groove on the cooling module for the assembly between cooling module and mount pad and the shell is more simple and convenient, has saved installation time, has reduced manufacturing cost simultaneously. The terminal assemblies are arranged on two opposite sides of the main body part and are connected to the shell through the abdicating grooves; the terminal assembly, the cooling assembly, the shell and the base body are enclosed to form a glue pouring groove; through pouring the heat-conducting colloid in the encapsulating groove, can be so that the heat that the terminal subassembly produced in time transmits to cooling module department, also can improve the radiating efficiency, also can play insulating, fixed and sealed effect to each subassembly simultaneously.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural view of an embodiment of a charging gun head of the present invention;

fig. 2 is an exploded view of an embodiment of the charging gun head of the present invention;

fig. 3 is a schematic structural diagram of an embodiment of the mounting base of the present invention;

FIG. 4 is a schematic structural diagram of an embodiment of the cooling module of the present invention;

fig. 5 is a schematic structural view of another embodiment of the cooling module of the present invention;

fig. 6 is an exploded view of yet another embodiment of the cooling assembly of the present invention;

fig. 7 is a cross-sectional view of an embodiment of the charging gun head of the present invention;

fig. 8 is a schematic structural view of an embodiment of a terminal assembly according to the present invention;

fig. 9 is a schematic structural view of an embodiment of the charging gun of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1000	Charging gun	100	Charging gun head
10	Outer casing	11	Mounting hole
				30	Mounting seat	31	Base body
311	Abdicating groove	313	Second fixing part
				33	Plug-in block	40	Control mainboard
50	Cooling assembly	51	Plug-in groove
				53	Cooling body	531	Heat radiation surface
533	Mounting surface	533a	Fixing groove
				54	Water tap	55	Liquid cooling pipe
57	First fixed part	59	Leak detector
				60	Glue pouring groove	70	Terminal assembly
71	Power terminal	711	Main body segment
				713	Connecting segment	715	Heat radiation plate
73	First conductive line	75	Flange plate
				77	Sealing ring	300	Sealed outer casing
500	Handle (CN)

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a charging gun head 100, the charging gun head 100 comprises a shell 10, a mounting seat 30, a cooling assembly 50 and at least two terminal assemblies 70; the mounting seat 30 includes a seat body 31 and an insertion block 33, the seat body 31 is disposed in the housing 10 and is provided with at least two yielding slots 311, and the insertion block 33 is located between the two yielding slots 311; the cooling component 50 is provided with a plug-in groove 51, and the plug-in block 33 is plugged in the plug-in groove 51; two terminal assemblies 70 are disposed on two opposite sides of the cooling assembly 50 and connected to the housing 10 through the relief grooves 311, and the relief grooves 311 and the inner wall surface of the housing 10 enclose to form the potting grooves 60.

The charging gun head 100 of the application comprises a shell 10, a mounting seat 30, a cooling assembly 50 and a terminal assembly 70, wherein the mounting seat 30 comprises a seat body 31 and a plugging block 33, the seat body 31 is arranged in the shell 10 and is provided with at least two abdicating grooves 311, and the plugging block 33 is positioned between the two abdicating grooves 311; the cooling component 50 is provided with a plug-in groove 51, and the plug-in block 33 is plugged in the plug-in groove 51; the installation seat 30 is provided with the insertion block 33, and the cooling assembly 50 is provided with the insertion groove 51, so that the assembly of the cooling assembly 50 with the installation seat 30 and the shell 10 is simpler and more convenient, the installation time is saved, and the production cost is reduced. The terminal assemblies 70 are disposed at opposite sides of the body portion and coupled to the housing 10 through the escape slots 311; the terminal assembly 70, the cooling assembly 50, the shell 10 and the seat body 31 are enclosed to form a glue pouring groove 60; by filling the heat conductive gel into the gel filling groove 60, the heat generated by the terminal assembly 70 can be transmitted to the cooling assembly 50 in time, the heat dissipation efficiency can be improved, and the insulation, fixation and sealing effects can be achieved for the components.

Referring to fig. 2 to 7, in an embodiment of the present application, the cooling assembly 50 may be configured as follows:

the cooling assembly 50 comprises a cooling main body 53 and at least two liquid cooling pipes 55, a cooling flow channel for cooling medium to flow is arranged in the cooling main body 53, the cooling main body 53 is provided with an upper end face, a lower end face and a side peripheral face surrounding the two end faces, which are oppositely arranged, the side peripheral face of the cooling main body 53, the abdicating groove 311 and the inner wall face of the shell 10 are enclosed to form a glue pouring groove 60, and the splicing groove 51 penetrates through the upper end face and the lower end face; at least two liquid-cooling pipes 55 are provided on the upper end surface of the cooling body 53 and communicate with the cooling flow passage.

Through the inserting groove 51 which runs through the upper end face and the lower end face of the cooling main body 53, the inserting block 33 and the inserting groove 51 can be inserted more conveniently, namely, the cooling assembly 50 and the mounting seat 30 are mounted more conveniently, meanwhile, the material consumption of the cooling main body 53 can be reduced, and the production cost is reduced. The side circumferential surface of the cooling main body 53, the receding groove 311 and the inner wall surface of the housing 10 are enclosed to form a glue filling groove 60, a cooling channel through which a cooling medium flows is arranged in the cooling main body 53, the glue filling groove 60 is filled with heat-conducting silica gel, heat generated when the terminal assembly 70 works in the charging gun head 100 is transferred to the cooling main body 53 through the heat-conducting silica gel, the cooling medium flows in the cooling channel, so that the transferred heat is dissipated, the temperature of the terminal assembly 70 is reduced, and the heat dissipation is completed. Through setting up liquid-cooling pipe 55 at the up end of cold district main part to with the cooling channel intercommunication, can be so that cooling medium can follow a liquid-cooling pipe 55 and get into the cooling channel, flow to liquid-cooling pipe 55 from the cooling channel again in, so alright with make cooling medium have longer flow space, thereby have better radiating effect. It is understood that the material of the cooling body 53 may be an aluminum alloy.

Referring to fig. 2 to 7, in an embodiment of the present disclosure, the side circumferential surface of the cooling body 53 further includes two opposite heat dissipation surfaces 531 and a mounting surface 533 connecting the two heat dissipation surfaces 531, at least one mounting surface 533 has a fixing groove 533a, the extending direction of the fixing groove 533a is the same as that of the inserting groove 51, and the two heat dissipation surfaces 531, the receding groove 311 and the inner wall surface of the housing 10 enclose to form the glue filling groove 60.

By providing the fixing grooves 533a on the mounting surface 533, the protrusions located at opposite sides of the insertion block 33 can be inserted into the fixing grooves 533a, so that the connection between the cooling body 53 and the mounting base 30 is more tight, and the structural stability thereof is maintained. The heat dissipating surface 531, the receding groove 311 and the inner wall surface of the housing 10 are surrounded to form a glue filling groove 60, which facilitates filling of the heat conductive silica gel, and when the heat generated by the terminal assembly 70 is transferred to the heat dissipating surface 531, the heat dissipating efficiency can be further improved.

Referring to fig. 1 to 6, in an embodiment of the present application, the cooling assembly 50 further includes a first fixing member 57 and a leak detector 59, a water nozzle 54 is disposed at a connection position of the cooling body 53 and the liquid cooling pipe 55, the liquid cooling pipe 55 is inserted into the water nozzle 54, the first fixing member 57 is fixed to the water nozzle 54, and the leak detector 59 is clamped on a surface of the first fixing member 57 facing the water nozzle 54 and located at a connection position of the water nozzle 54 and the liquid cooling pipe 55.

The liquid cooling pipe 55 is inserted into the water nozzle 54, and the first fixing piece 57 is fixed on the water nozzle 54, so that the structural stability of the liquid cooling pipe 55 and the water nozzle 54 can be maintained; with the joint of leak detector 59 in the surface of first mounting 57 orientation water injection well choke 54 to be located the junction of water injection well choke 54 and liquid cooling pipe 55, when the liquid cooling pipe 55 interface takes place to leak, water can drip to leak detector 59 on, will set up at leak detector 59 surface wire short circuit, detect the emergence short circuit after, leak detector 59 can send signal, thereby the user can know that water injection well choke 54 is not hard up with the junction of liquid cooling pipe 55, thereby make the user in time handle.

Referring to fig. 1, 2 and 6, in an embodiment of the present application, the base 31 is provided with a second fixing part 313, and the charging gun head 100 further includes a control main board 40, where the control main board 40 is clamped to the second fixing part 313 and electrically connected to the leak detector 59.

The second fixing part 313 is arranged on the base body 31 and can be used for installing the control mainboard 40, and the leak detector 59 is electrically connected with the control mainboard 40; when the connection between the water nozzle 54 and the liquid cooling pipe 55 is loosened and water leaks, the leak detector 59 sends the detected signal to the control main board 40, and the control main board 40 stops the charging process immediately after receiving the short-circuit signal and gives an alarm to remind the user of processing the short-circuit signal.

Referring to fig. 1, 2, 5 and 6, in an embodiment of the present application, the number of the liquid cooling pipes 55 may be four, two of the liquid cooling pipes 55 may be liquid inlet pipes, and the other two liquid cooling pipes 55 may be liquid outlet pipes. The four liquid cooling pipes 55 correspond to the four water nozzles 54 and the first fixing member 57, the first fixing member 57 can be fixed to the two water nozzles 54 located at the bottom, and the number of the liquid cooling pipes 55 can be selected according to the heat dissipation requirements of the charging gun head 100 with different requirements.

Referring to fig. 1, 2, 7 and 8, in an embodiment of the present application, the terminal assembly 70 includes a power terminal 71, the power terminal 71 includes a main body segment 711 and a connecting segment 713 disposed below the main body segment 711, and the connecting segment 713 is bent toward the heat dissipation surface 531 to form a heat dissipation plate 715; the inner wall of the housing 10 is provided with a mounting hole 11, the body segment 711 is inserted into the mounting hole 11 through the relief groove 311, and the end surface of the connecting segment 713 facing the body segment 711 abuts against the groove wall of the relief groove 311.

The heat dissipation section of the power terminal 71 is bent toward the heat dissipation surface 531 to form a heat dissipation plate 715, the main body section 711 passes through the receding groove 311 and is inserted into the mounting hole 11 on the inner wall of the housing 10, and the end surface of the connecting section 713 facing the main body section 711 abuts against the groove wall of the receding groove 311 facing the cooling main body 53, so that the power terminal 71 is fixed to maintain the structural stability. The heat emitted from the power terminal 71 is transferred to the heat dissipating surface 531 through the heat conductive gel in the gel filling groove 60, so that the heat is dissipated through the cooling assembly 50.

Referring to fig. 1, 2, 7 and 8, in an embodiment of the present application, the terminal assembly 70 may further be configured as follows:

the terminal assembly 70 further comprises a first wire 73, a flange 75 and a sealing ring 77, wherein the first wire 73 is welded with the connecting section 713; the flange plate 75 is arranged between the main body section 711 and the connecting section 713, the surface of the flange plate 75 facing the connecting section 713 abuts against the wall of the receding groove 311, and the surface of the flange plate 75 facing away from the connecting section 713 abuts against the wall of the mounting hole 11; the sealing ring 77 abuts against a surface of the flange 75 facing away from the connecting section 713 and against a wall of the mounting hole 11.

The connection between the first wire 73 and the connection section 713 of the power terminal 71 can be ultrasonic welding, which has high welding speed and high efficiency, and can reduce welding cost.

The surface butt of ring flange 75 towards linkage segment 713 deviates from the cell wall of cooling body 53 in abdicating groove 311, deviates from the surface butt in the pore wall of mounting hole 11 of linkage segment 713, and sealing washer 77 butt deviates from the one side of linkage segment 713 in ring flange 75 to the butt is in the pore wall of mounting hole 11, so just formed encapsulating groove 60, can be with inside and external isolated, dustproof, waterproof of rifle head and glue when preventing follow-up encapsulating excessive.

It can be understood that the heat-conducting silica gel can be fully injected into the gel-filled region, the gel-filled region is required to be fully filled, the exposed part of the lead wire is immersed, the insulation, fixing, sealing and heat-conducting effects are achieved, when the terminal assembly 70 is charged and heated, heat is conducted to the cooling assembly 50 along the heat-conducting silica gel, and the temperature of the charging gun 1000 is reduced;

or heat-conducting silicone grease of different materials is injected into the glue-filled area in different areas, and one glue-filled area is injected into the heat-conducting silicone grease to submerge the end face of the connecting section 713, so that when the power terminal 71 is charged to generate heat, the heat is transferred from the main heat-dissipation area heat-dissipation plate 715 of the power terminal 71 to the heat-conducting silicone grease of the glue-filled area and then transferred to the cooling assembly 50, and heat dissipation is completed; and injecting sealant into the other glue pouring area, wherein the glue pouring area is required to be completely filled, and the exposed part in the lead is immersed to play roles in insulation, fixation and sealing.

Referring to fig. 2 and 8, in an embodiment of the present application, the body section 711 and the connection section 713 are welded.

The connection between the main body segment 711 and the connection segment 713 of the power terminal 71 may be welding, or may be another connection method integrally formed, and is not limited herein. By adopting the welding mode, the overall structure of the power terminal 71 can be more stable, and the production cost can be reduced.

Referring to fig. 2 and 8, in an embodiment of the present application, the terminal assembly 70 further includes a copper bar assembly through which the body segment 711 and the connecting segment 713 are connected.

The main body section 711 and the connection section 713 of the power terminal 71 may be connected by a copper bar assembly, so that the detachment thereof is more convenient.

The utility model discloses still provide a rifle 1000 charges, including seal housing 300, handle 500 and foretell rifle head 100 charges, seal housing 300 is connected in rifle head 100 that charges, and handle 500 sets up on seal housing 300.

The specific structure of the charging gun 1000 in the present application refers to the above-mentioned embodiments, and since the charging gun head 100 adopts all the technical solutions of all the above-mentioned embodiments, all the beneficial effects brought by the technical solutions of the above-mentioned embodiments are at least achieved, and are not repeated here.

The utility model also provides an electric automobile charging device, including above-mentioned rifle 1000 that charges.

The specific structure of the electric vehicle charging device of the present application refers to the above-mentioned embodiments, and since this charging gun 1000 adopts all technical solutions of all the above-mentioned embodiments, all beneficial effects brought by the technical solutions of the above-mentioned embodiments are at least possessed, and are not repeated here one by one.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a rifle head charges which characterized in that, the rifle head that charges includes:

a housing;

the cooling assembly is provided with an inserting groove, and the inserting block is inserted into the inserting groove; and

2. A charging gun head according to claim 1, characterised in that the cooling assembly comprises:

the cooling body is internally provided with a cooling flow channel for a cooling medium to flow, the cooling body is provided with an upper end face, a lower end face and a side peripheral face surrounding the two end faces, the side peripheral face of the cooling body, the abdicating groove and the inner wall face of the shell are enclosed to form the glue pouring groove, and the splicing groove penetrates through the upper end face and the lower end face; and

3. The lance head according to claim 2, wherein the side circumferential surface of the cooling body includes two opposite heat dissipating surfaces and a mounting surface for connecting the two heat dissipating surfaces, at least one of the mounting surfaces has a fixing groove, the fixing groove extends in the same direction as the insertion groove, and the two heat dissipating surfaces, the receding groove and the inner wall surface of the housing enclose the glue pouring groove.

4. The lance head according to claim 3, wherein the cooling assembly further comprises a first fixing member and a leak detector, a water nozzle is arranged at a joint of the cooling body and the liquid cooling pipe, the liquid cooling pipe is inserted into the water nozzle, the first fixing member is fixed to the water nozzle, and the leak detector is clamped on a surface of the first fixing member facing the water nozzle and located at a joint of the water nozzle and the liquid cooling pipe.

5. The lance head according to claim 4, wherein the base body is provided with a second fixing member, and the lance head further comprises a control main board, and the control main board is fastened to the second fixing member and electrically connected to the leak detector.

6. The charging gun head according to any one of claims 3 to 5, wherein the terminal assembly comprises a power terminal, the power terminal comprises a main body section and a connecting section arranged below the main body section, and the connecting section is bent towards the heat dissipation surface to form a heat dissipation plate;

7. The charging gun head according to claim 6, wherein the terminal assembly further comprises:

a first lead, the first lead and the connecting section being soldered;

8. A charging gun head according to claim 6, characterised in that the main body section and the connection section are welded;

9. A charging gun, comprising a sealed housing, a handle and a charging gun head as claimed in any one of claims 1 to 8, the sealed housing being attached to the charging gun head and the handle being provided on the sealed housing.

10. A charging device for electric vehicles, characterized by comprising the charging gun according to claim 9.