Charging gun tail connecting structure and charging gun

Abstract

The utility model discloses a charging gun tail connecting structure and a charging gun in the field of new energy, the charging gun tail connecting structure comprises a first butt joint piece and a second butt joint piece, and the first butt joint piece or the second butt joint piece is provided with a sealing sliding piece capable of moving in the length direction of the first butt joint piece or the second butt joint piece; the first butt-joint piece and the second butt-joint piece are fixedly connected in the axial direction, the sealing sliding piece is stressed to move to cover the connecting position of the first butt-joint piece and the second butt-joint piece, and a fixing assembly is arranged on the sealing sliding piece; through the structural design of the sealing sliding piece, the design that after the first butt joint piece (cable) is crimped, the external liquid cooling pipe is stretched to conduct relevant installation is avoided, the fixing assembly conducts positioning and locking on the sealing sliding piece, the stroke of the sealing sliding piece is used for replacing stretching deformation of the liquid cooling pipe in the first butt joint piece, and therefore the sealing effect is improved. In the design process, deformation of the liquid cooling pipe is reduced, stress at the sealing connection position can be reduced, the matching size of a sealing area is controlled, the sealing performance of a product is enhanced, the structural strength of the product is improved, and the service life of the product is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy, in particular to a charging gun tail connecting structure. BACKGROUND

[0002] In the process of the continuous popularization of new energy vehicles, with the continuous improvement of electric vehicle technology, the support of national policy, the gradual strengthening and improvement of charging infrastructure construction, the market demand for charging guns is increasing, and the technical development of charging guns is gradually mature. However, with the continuous progress of the technology of charging guns, some problems have also emerged. The current research focus of the technical development of charging guns is mostly on the gun part, and the development of the tail copper bar is relatively weak. The assembly problems in the process and the sealing stability problems in the product design gradually appear, and these problems need to be optimized.

[0003] The current GB oil-cooled gun and Chaoji oil-cooled gun and other products use cooling liquid circulation in the cooling pipeline and external cooling source to reduce the temperature of the cooling liquid. The insulating cooling liquid is in direct contact with the heating copper wire, and most of the heat is carried away. However, the installation of the cooling pipeline and the tail copper bar assembly is a technical difficulty for oil-cooled charging guns. While ensuring the normal circulation and heat dissipation of the cooling liquid, the sealing design and process performance of the connection part must be guaranteed. The sealing performance must be able to withstand the high temperature and high pressure of the cooling liquid in the water pipe. In the production process of the current high-power oil-cooled charging gun, after the cable and the core are crimped, the installation process of the liquid cooling pipe is difficult. The liquid cooling pipe needs to be fully exposed when the copper bar is crimped. In fact, a certain length of the crimped cable is exposed. After the cable is crimped, the liquid cooling pipe is stretched and deformed to cover the entire crimped part. This design not only affects the strength of the liquid cooling pipe, but also changes the design size of the sealing area of the liquid cooling pipe, affecting the overall sealing performance of the product. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide a charging gun tail connecting structure to solve the defects of the existing charging gun tail sealing area, which reduces the sealing performance and the connection strength.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0006] In a first aspect, a charging gun tail connecting structure includes a first interface piece and a second interface piece. The first interface piece or the second interface piece is provided with a sealing slide capable of moving along the length direction of the first interface piece or the second interface piece. The first interface piece and the second interface piece are axially fixedly connected. The sealing slide moves under force to cover the connection part of the first interface piece and the second interface piece. The sealing slide is provided with a fixing assembly for positioning and fixing the sealing slide.

[0007] In a further aspect of the application, the first connector and the second connector are axially press-fit fixed.

[0008] In a further aspect of the application, the fixing assembly comprises a locking member and a positioning member, the locking member and the positioning member are arranged at two ends of the sealing slide, the positioning member is used to position and fix the sealing slide and the second connector, and the locking member is used to fix the sealing slide and the first connector or the second connector.

[0009] In a further aspect of the application, the second connector is provided with a sealing member on a side close to the positioning member.

[0010] In a further aspect of the application, the sealing slide is provided with a first limiting flange at an end close to the positioning member, the second connector is provided with a second limiting flange, the first limiting flange and the second limiting flange are in moving contact, the positioning member is laterally installed to fix the sealing slide and the second connector.

[0011] In a further aspect of the application, the positioning member comprises an open blocking ring, the second limiting flange is provided with an arc-shaped groove, and the open blocking ring is arranged in the arc-shaped groove through an opening on the first limiting flange.

[0012] In a further aspect of the application, the first connector and the second connector are arranged in axial opposition.

[0013] In a second aspect, a charging gun comprises the charging gun tail connecting structure.

[0014] The application has the following beneficial effects:

[0015] In the application, the structure design of the sealing slide avoids the design of stretching the external liquid cooling pipe after the press-fit of the first connector (cable) for installation, the fixing assembly positions and locks the sealing slide, and the stroke of the sealing slide replaces the stretching deformation of the liquid cooling pipe in the first connector. Reducing the deformation of the liquid cooling pipe in the design process can reduce the stress at the sealing connection, control the fitting size of the sealing area, enhance the sealing performance of the product, and improve the structural strength and service life of the product.

[0016] The structure design of the sealing slide replaces the previous installation method, greatly optimizes the production process, reduces the process difficulty, reduces the working hours, reduces the cost, and improves the production capacity during the production process. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 1 is a structural schematic diagram of a charging gun tail connecting structure according to an embodiment of the application;

[0018] Figure 2Axial sectional view of the tail connection structure of the charging gun of the embodiment of the present application;

[0019] 1, first connector; 2, copper wire; 3, locking piece; 4, sealing slide; 5, sealing piece; 6, positioning piece; 7, second connector; 41, first limiting flange; 71, second limiting flange. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. EMBODIMENT

[0021] As shown in Figure 1 and Figure 2 The present embodiment provides a high-power oil-cooled charging gun tail copper bar connection structure, which comprises a first connector 1 and a second connector 7 arranged axially opposite to each other, the first connector 1 or the second connector 7 is provided with a sealing slide 4 capable of moving along the length direction of the first connector 1 or the second connector 7, the first connector 1 and the second connector 7 are axially crimped and fixed, the sealing slide 4 is forced to move to cover the connection between the first connector 1 and the second connector 7, and the sealing slide 4 is provided with a fixing assembly for positioning and fixing the sealing slide 4.

[0022] The fixing assembly comprises a locking piece 3 and a positioning piece 6, which are arranged at both ends of the sealing slide 4, the positioning piece 6 is used for positioning the sealing slide 4, and the locking piece 3 is used for fixing the sealing slide 4 and the first connector 1 or the second connector 7.

[0023] When the present embodiment is used, the sealing slide 4 is sleeved on the second connector 7, the first connector 1 and the second connector 7 are fixed at adjacent ends, the sealing slide 4 is moved, at this time, the connection between the first connector 1 and the second connector 7 is covered by the sealing slide 4, the connection is protected, finally the sealing slide 4 is locked and fixed through the fixing assembly, and finally the connection between the first connector 1 and the second connector 7 is not only protected (i.e. indirectly improves the connection strength), but also ensures the sealing property of the connection.

[0024] The structure will be described in detail below in combination with actual application and related drawings.

[0025] As shown in Figure 1As shown, the first connecting piece 1 in the embodiment is a liquid cooling pipe, a copper wire 2 is arranged in the liquid cooling pipe, the second connecting piece 7 in the embodiment is a tail copper bar assembly, the sealing sliding piece 4 in the embodiment is sleeved on the tail copper bar assembly, and the copper wire 2 is partially exposed from the liquid cooling pipe, the tail copper bar assembly is crimped with the copper wire 2, the sealing sliding piece 4 is moved to a position where the tail copper bar assembly is pre-disengaged, the exposed end of the sealing sliding piece 4 is a containing area, the containing area is used to cover the connection between the two connecting pieces, and the sealing sliding piece 4 is fixed by using the fixing assembly (until the stroke is in place).

[0026] As shown in the accompanying drawings, Figure 2 As shown, the inner wall of the side of the sealing sliding piece 4 close to the positioning piece 6 is provided with a sealing piece 5, the sealing piece 5 is arranged between the sealing sliding piece 4 and the tail copper bar assembly, and the sealing piece 5 is an O-shaped sealing ring in the length direction, two O-shaped sealing rings are used here, the two O-shaped sealing rings are arranged in parallel, and the overall sealing effect of the structure is improved.

[0027] As shown in the accompanying drawings, Figure 2 In order to facilitate the movement and positioning of the sealing sliding piece 4, the auxiliary positioning structure is further arranged in the structure, one end of the sealing sliding piece 4 close to the positioning piece 6 is provided with a first limiting flange 41, the second connecting piece 7 is provided with a second limiting flange 71, the first limiting flange 41 and the second limiting flange 71 are in movement contact, the positioning of the sealing sliding piece 4 is realized, the positioning piece 6 includes an open check ring in the embodiment, the second limiting flange 71 is provided with an arc-shaped groove, and the open check ring is arranged in the arc-shaped groove through the opening of the first limiting flange 41. Generally, the locking piece 3 uses a clamp, and the radial locking ability is strong. Embodiment

[0028] The embodiment discloses a charging gun, which comprises a charging gun tail connecting structure in the above embodiment.

[0029] Compared with the prior art, the tail copper bar connection structure of the high-power oil-cooled charging gun in the embodiment of the application avoids the deformation of the liquid cooling pipe through the structure of the sealing slide 4, improves the sealing performance of the product, and optimizes the production process of the product. The cooling idea of the high-power oil-cooled charging gun is to directly contact the cable with the insulating cooling liquid, and the heat on the copper wire 2 is taken away through the continuous circulation of the cooling liquid. Under the cooling of the cold source, the temperature of the cooling liquid is reduced to realize the continuous circulation cooling of the cooling liquid in the gun to take away most of the heat inside the high-power oil-cooled charging gun during work. This copper-in-water cooling design requires a liquid cooling pipe to cover the copper wire 2 in it, and the cooling liquid circulating in the liquid cooling pipe takes away the heat of the copper wire 2. In the past production process of the high-power oil-cooled charging gun, the installation and production of the tail copper bar need to reserve a crimping length for the copper wire 2 inside the liquid cooling pipe, and after the copper bar is crimped with the copper wire 2, the liquid cooling pipe is stretched to cover the crimping area. Such design is unreasonable. In order to improve this problem, the structure of the sealing slide 4 is used in the application to replace the stretching of the liquid cooling pipe with the stroke of the sealing slide 4.

[0030] Specific use:

[0031] In the production process of the tail copper bar of the high-power oil-cooled charging gun, the application first needs to reserve the crimping length of the copper wire 2 and the tail copper bar assembly. According to the required length, part of the copper wire 2 is exposed outside the liquid cooling pipe (the first connecting piece 1). After the length reservation is completed, the sealing slide 4 on the tail copper bar assembly (the second connecting piece 7) is moved to the rightmost side, the crimping position of the tail copper bar assembly is fully exposed, and then the copper wire 2 is crimped with the tail copper bar assembly. After crimping is completed, the sealing slide 4 is moved to the leftmost side. During the movement, the liquid cooling pipe is installed on the sealing installation area of the sealing slide 4. After the stroke of the sealing slide 4 is in place, the opening blocking ring at the tail of the sliding groove is installed to limit the sealing slide 4. Finally, the liquid cooling pipe is locked by the locking piece 3 at the sealing installation area of the sealing slide 4 to complete the entire installation process. The right side of the sealing slide 4 is installed on the tail copper bar assembly by two locking pieces 3 to achieve sealing, and the left side is directly connected with the liquid cooling pipe and locked by the locking piece 3 at the sealing area to achieve the sealing of the structure. When the product works, the cooling liquid directly contacts the copper wire 2 through the liquid cooling pipe to take away the surface temperature of the copper wire 2, then enters the sealing slide 4, and then enters the tail copper bar assembly. The cooling liquid cooled by the cold source is then circulated in the liquid cooling pipe. The above entire installation process is convenient and simple to operate, has good sealing performance, avoids the stretching and deformation of the liquid cooling pipe, and optimizes the structure of the product. The entire working cycle is scientific and reasonable, and can effectively control the temperature of the high-power oil-cooled gun.

[0032] In the description of the application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first", "second" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0033] In the description of the application, it needs to be understood that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

Claims

1. A charging gun tail connection structure, characterized by, The first connector (1) and the second connector (7) are provided with a sealing slide (4) capable of moving along the length direction of the first connector (1) or the second connector (7), the first connector (1) is axially fixedly connected with the second connector (7), the sealing slide (4) is forced to move to cover the connection between the first connector (1) and the second connector (7), and the sealing slide (4) is provided with a fixing assembly for positioning and fixing the sealing slide (4).

2. The charging gun tail connection structure according to claim 1, characterized in that, The first connector (1) and the second connector (7) are axially press-connected and fixed.

3. The charging gun tail connection structure according to claim 1, characterized in that, The fixing assembly comprises a locking piece (3) and a positioning piece (6), the locking piece (3) and the positioning piece (6) are arranged at both ends of the sealing slide (4) in a spaced manner, the positioning piece (6) is used for positioning and fixing the sealing slide (4) and the second connector (7), and the locking piece (3) is used for fixing the sealing slide (4) and the first connector (1).

4. The charging gun tail connection structure according to claim 3, characterized in that, The second connector (7) is provided with a sealing piece (5) on the side close to the positioning piece (6).

5. The charging gun tail connection structure according to claim 3, characterized in that, The sealing slide (4) is provided with a first limiting flange (41) on the end close to the positioning piece (6), the second connector (7) is provided with a second limiting flange (71), the first limiting flange (41) is in moving contact with the second limiting flange (71), the positioning piece (6) is laterally installed, and the sealing slide (4) and the second connector (7) are fixed.

6. The charging gun tail connection structure according to claim 5, characterized in that, The positioning piece (6) comprises an open blocking ring, the second limiting flange (71) is provided with an arc-shaped groove, and the open blocking ring is arranged in the arc-shaped groove through the opening of the first limiting flange (41).

7. The charging gun tail connection structure according to claim 1, characterized in that, The first connector (1) and the second connector (7) are arranged in axial opposition.

8. A charging gun, characterized in that, The charging gun tail connecting structure comprises the charging gun tail connecting structure according to any one of claims 1 to 7. The charging gun tail connecting structure comprises the charging gun tail connecting structure according to any one of claims 1 to 7.

Images