Charging socket and automobile

Abstract

The invention discloses a charging socket and an automobile, the charging socket comprises a first shell and a second shell, the first shell comprises a first body and a first sealing structure, the first sealing structure is arranged around the first body, and the first sealing structure is connected with the first body; the second shell comprises a second body and a second sealing structure, the second sealing structure is arranged around the second body, and the second sealing structure is connected with the second body; the first sealing structure and the second sealing structure are connected in a sealed mode. According to the charging socket, the first sealing structure of the first shell and the second sealing structure of the second shell are directly connected in a sealed mode, a sealing gasket structure in a conventional shell is omitted, connection between the first shell and the second shell is achieved without an additional structure, the overall structure of the charging socket is simpler, connection air-tight sealing is good, and the charging socket is more convenient to use. Meanwhile, the charging socket cost is effectively saved, and the charging socket space is reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of automobile connectors, and particularly relates to a charging socket and an automobile. BACKGROUND

[0002] The power battery of a new energy automobile needs to be charged to ensure that it has sufficient power to drive the automobile to travel. The charging socket is one of the connectors indispensable for charging the power battery, and the charging socket needs to ensure overall sealing to avoid electric leakage, so as to ensure the safety of the whole vehicle. SUMMARY

[0003] The application provides a charging socket, which aims to solve the problem of sealing the existing charging socket to avoid electric leakage and ensure the safety of the whole vehicle. Another object of the application is to provide an automobile.

[0004] The technical scheme is that the charging socket comprises a first shell and a second shell, the first shell comprises a first body and a first sealing structure, the first sealing structure is arranged around the first body, and the first sealing structure is connected with the first body; the second shell comprises a second body and a second sealing structure, the second sealing structure is arranged around the second body, and the second sealing structure is connected with the second body; and the first sealing structure is sealingly connected with the second sealing structure.

[0005] Correspondingly, the automobile comprises the charging socket and the power battery, the charging socket is connected with the power battery through a wire, and is used for charging the power battery.

[0006] Compared with the prior art, the charging socket of the application directly sealingly connects the first sealing structure of the first shell and the second sealing structure of the second shell, omits the sealing gasket structure in the conventional shell, and does not need additional structures to connect the first shell and the second shell, so that the overall structure of the charging socket is simpler, the connection is better sealed, the cost of the charging socket is effectively saved, and the space of the charging socket is reduced.

[0007] Compared with the prior art, the automobile of the application comprises the charging socket and the power battery, the charging socket is connected with the power battery through a wire, and is used for charging the power battery. It can be understood that the automobile of the application comprises all the technical features and technical effects of the charging socket of the foregoing embodiments, which will not be described herein. BRIEF DESCRIPTION OF DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and all other drawings obtained by those skilled in the art without creative effort based on these drawings also belong to the protection scope of the present application.

[0009] Figure 1 is a schematic diagram of the overall structure of a charging socket according to an embodiment of the present application;

[0010] Figure 2 is a schematic diagram of the overall structure of a first shell of a charging socket according to an embodiment of the present application;

[0011] Figure 3 is a schematic diagram of the overall structure of a second shell of a charging socket according to an embodiment of the present application;

[0012] Figure 4 is a bottom view of a charging socket according to an embodiment of the present application after the first shell and the second shell are assembled;

[0013] Figure 5 is a sectional view along A-A in Figure 4

[0014] Figure 6 is an enlarged view of part B in Figure 5

[0015] Figure 7 is an enlarged view of part B in Figure 5

[0016] Reference signs: 1, first shell; 11, first body; 12, first sealing structure; 121, first groove; 122, first limiting portion; 123, third limiting portion; 124, welding platform; 13, fourth limiting portion; 14, second groove; 15, first through hole; 2, second shell; 21, second body; 22, second sealing structure; 221, first protrusion; 2211, first segment; 2212, second segment; 222, second limiting portion; 23, fifth limiting portion; 24, second through hole; 3, central axis. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments only represent some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort also belong to the protection scope of the present application.

[0018] ​​​In the description of this application, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, and "at least one" can mean one, two, or more, unless otherwise explicitly specified. In the description of this application, "perpendicular" means completely perpendicular to 90° or almost completely perpendicular, for example, the range of included angles from 80° to 100° is considered perpendicular. Similarly, "parallel" means completely parallel or almost completely parallel, for example, the range of completely parallel angles from 10° is considered parallel.

[0019] In Xineng Energy vehicles, a charging socket is required to charge the power battery. This charging socket needs a front cover and a rear cover to form a sealed enclosure for the connection terminals. The front and rear covers are typically sealed with gaskets, making the entire assembly process complex and prone to airtightness issues. Furthermore, the assembled product has a large internal space and occupies a significant overall footprint.

[0020] In view of this, embodiments of this application provide a charging socket, which aims to solve at least one of the above problems.

[0021] Please refer to the following: Figures 1-3 Specifically, this application provides a charging socket, including a first housing 1 and a second housing 2. The first housing 1 includes a first body 11 and a first sealing structure 12. The first sealing structure 12 is disposed around the first body 11 and is connected to the first body 11. The second housing 2 includes a second body 21 and a second sealing structure 22. The second sealing structure 22 is disposed around the second body 21 and is connected to the second body 21. The first sealing structure 12 and the second sealing structure 22 are sealed together.

[0022] The charging socket in this embodiment is directly sealed and connected by the first sealing structure 12 of the first housing 1 and the second sealing structure 22 of the second housing 2, eliminating the need for the sealing gasket structure in the conventional housing and eliminating the need for an additional structure to connect the first housing 1 and the second housing 2. This makes the overall structure of the charging socket simpler and provides a good airtight connection, while effectively saving the cost of the charging socket and reducing the space required for the charging socket.

[0023] In this embodiment, the first sealing structure 12 is disposed on the side of the first body 11 facing the second body 21, and the second sealing structure 22 is disposed on the side of the second body 21 facing the first body 11. The first sealing structure 12 and the second sealing structure 22 are connected to achieve a sealed connection between the first housing 1 and the second housing 2. There is no need to prepare a separate sealing gasket to fill between the first housing 1 and the second housing 2, which can achieve a better sealing effect and the overall structure is simpler.

[0024] It should be noted that, in this embodiment, the first sealing structure 12 is sealed to the first body 11, and the second sealing structure 22 is sealed to the second body 21, thereby ensuring the overall airtightness of the first housing 1 and the second housing 2 after being sealed together. Furthermore, the first sealing structure 12 and the first body 11 can be an integral structure, and the second sealing structure 22 and the second body 21 can also be an integral structure, specifically, they can be integrally injection molded.

[0025] It should be noted that, since the charging socket needs to ensure the insulation of its internal wiring terminals, both the first housing 1 and the second housing 2 are insulating components, which can be plastic parts. In specific implementations, the first housing 1 can be a front cover, and the second housing 2 can be a rear cover; the rear cover and the front cover can be integrally injection molded plastic parts.

[0026] It should also be noted that both the front and rear covers of the charging socket are provided with through holes for the wires and terminals of the wiring terminals to pass through, thereby facilitating the electrical connection between the charging pile and the power battery, and thus enabling the charging of the power battery.

[0027] It should be noted that the sealing connection between the first sealing structure 12 and the second sealing structure 22 can be specifically achieved by directly adhesive bonding the two sealing structures. Alternatively, the first sealing structure 12 and the second sealing structure 22 can be welded together, specifically by laser welding, where one of the first sealing structure 12 or the second sealing structure 22 is heat-melted and then bonded to the other unmelted sealing structure. Alternatively, the first sealing structure 12 can be arranged around the outer periphery of the second sealing structure 22, with a sealing ring provided on the inner periphery of the first sealing structure 12 or the outer periphery of the second sealing structure 22. This sealing ring is compressed and deformed to fill the space between the first sealing structure 12 and the second sealing structure 22, thus achieving a sealing connection between the two sealing structures.

[0028] Please refer to the following: Figures 2-7 In some embodiments, the first sealing structure 12 has a first groove 121, the opening of which faces the second sealing structure 22; the second sealing structure 22 includes a first protrusion 221, which is disposed on the side of the second body 21 facing the first sealing structure 12 and is connected to the second body 21; the first protrusion 221 is disposed in the first groove 121 and is sealed to the inner wall of the first groove 121.

[0029] In this embodiment of the application, the first protrusion 221 and the first groove 121 are provided to cooperate with each other to realize the connection between the first housing 1 and the second housing 2. The first protrusion 221 and the first groove 121 limit each other, which can realize the effective alignment of the first housing 1 and the second housing 2. This facilitates the alignment of the through holes on the first housing 1 and the second housing 2, facilitates the installation of the wiring terminals, and avoids interference of the wiring terminals during installation caused by misalignment of the first housing 1 and the second housing 2.

[0030] It should be noted that, in this embodiment, the first protrusion 221 is disposed within the first groove 121, wherein the first protrusion 221 is sealed to the inner wall of the first groove 121 to achieve a sealed connection between the first housing 1 and the second housing 2. Specifically, in this embodiment, the first groove 121 may be pre-filled with sealant. When the first protrusion 221 is inserted into the first groove 121, it contacts the sealant and compresses the sealant, causing the sealant to fill between the side wall of the first protrusion 221 and the inner wall of the first groove 121, thereby achieving adhesion between the first protrusion 221 and the first groove 121, and thus achieving a seal between the first housing 1 and the second housing 2. Alternatively, the first groove 121 and the first protrusion 221 are interference-fitted, the first protrusion 221 is embedded in the first groove 121, and the bottom of the first groove 121 is filled with a sealing buffer (such as a sealing ring) to achieve a sealed connection between the first protrusion 221 and the first groove 121. Alternatively, the first protrusion 221 can be inserted into the first groove 121, and the first protrusion 221 can be welded to the inner wall of the first groove 121 by laser welding. Specifically, by laser thermomelting, part of the first protrusion 221 is melted into the first groove 121 and flows in the first groove 121 to fill the space between the first groove 121 and the first protrusion 221, and connect the inner wall of the first groove 121 and the first protrusion 221 to achieve a sealed connection between the first groove 121 and the first protrusion 221.

[0031] Please refer to the following: Figure 2 and Figure 3 In some embodiments, the first groove 121 is an annular groove, and the first groove 121 is disposed around the side of the first sealing structure 12 facing the second sealing structure 22. The first protrusion 221 is an annular protrusion, and the first protrusion 221 is disposed around the side of the second body 21 facing the first sealing structure 12.

[0032] In this embodiment of the application, by setting the first groove 121 as an annular groove and the first protrusion 221 as an annular protrusion, the sealing of the first housing 1 and the second housing 2 can be directly achieved when the first protrusion 221 is sealed to the inner wall of the first groove 121.

[0033] Please refer to the following: Figure 6 and Figure 7 In some embodiments, a portion of the first protrusion 221 is thermally fused into the first groove 121 and sealed to the inner wall of the first groove 121.

[0034] In this embodiment, at least a portion of the first protrusion 221 is heat-fused into the first groove 121. The heat-fused portion of the first protrusion 221 fills the gap between the first protrusion 221 and the inner wall of the first groove 121. This fills the gap between the first protrusion 221 and the inner wall of the first groove 121 after gradual cooling, and bonds the first protrusion 221 and the inner wall of the first groove 121, thereby achieving a sealed connection between the first protrusion 221 and the inner wall of the first groove 121. This, in turn, achieves a sealed connection between the first sealing structure 12 and the second sealing structure 22, ensuring an airtight seal after the first housing 1 and the second housing 2 are connected. This connection method is not only simple in structure but also has good airtightness. Furthermore, the heat-fused first protrusion 221 filling the gap between the first groove 121 and the first protrusion 221 reduces the distance between the first housing 1 and the second housing 2, decreasing the volume of the connected first housing 1 and the second housing 2 and reducing space occupancy.

[0035] It should be noted that, in this embodiment, the heat fusion of the first protrusion 221 can be achieved by laser welding after the first protrusion 221 is assembled into the first groove 121. This is done by pressing the first housing 1 and the second housing 2 against each other, forcing the heat-fused portion of the first protrusion 221 between the inner wall of the first groove 121 and the unheat-fused portion of the first protrusion 221, ultimately bonding the first protrusion 221 to the inner wall of the first groove 121. Alternatively, the first protrusion 221 can be pre-heat-fused and quickly assembled into the first groove 121, while simultaneously pressing the first housing 1 and the second housing 2, causing the heat-fused portion of the first protrusion 221 to fill the space between the unheat-fused portion of the first protrusion 221 and the inner wall of the first groove 121, solidifying and bonding the unheat-fused portion of the first protrusion 221 to the inner wall of the first groove 121, thus achieving a sealed connection between the first protrusion 221 and the inner wall of the first groove 121.

[0036] In some embodiments, the first housing 1 is a light-transmitting housing.

[0037] In this embodiment, laser welding is preferably used to achieve the sealing connection between the first sealing structure 12 and the second sealing structure 22, specifically the sealing connection between the inner walls of the first protrusion 221 and the first groove 121. Simultaneously, to achieve partial heat fusion of the first protrusion 221 and ensure the overall structural stability of the first sealing structure 12, the first housing 1 is designed as a light-transmitting housing, facilitating the passage of the high-energy laser beam during laser welding and enabling partial heat fusion of the first protrusion 221.

[0038] It should be noted that the first housing 1 is a light-transmitting housing, and the second housing 2 is a non-light-transmitting housing. Both the first housing 1 and the second housing 2 are injection-molded plastic parts. This ensures that the first housing 1 does not melt or only melts slightly when irradiated by a high-energy laser beam, while the second housing 2 is opaque. When the high-energy laser beam passes through the first housing 1 and irradiates the first protrusion 221, the first protrusion 221 is partially melted.

[0039] It should also be noted that, in this embodiment, the first housing 1 is a light-transmitting housing, wherein the first housing 1 can be polymerized from either polyamide or polybutylene ester with glass fiber, wherein the glass fiber content can be 30%. The first housing 1 made of the above materials has high strength and rigidity, as well as high corrosion resistance, wear resistance, heat resistance, and insulation. Furthermore, the first housing 1 made of the above materials has good light transmittance, enabling the transmission of high-energy laser beams, and ensuring that the first housing 1 will not be deformed by the heat of the high-energy laser beam.

[0040] Please refer to the following: Figures 2-3 , Figures 5-7 In some embodiments, the first sealing structure 12 includes a first limiting portion 122, which is disposed around the side of the first body 11 facing the second sealing structure 22 and connected to the first body 11. The first limiting portion 122 is used to form a first groove 121. The charging socket has a central axis 3, and the first limiting portion 122 is disposed on the side of the first protrusion 221 near the central axis 3. The first limiting portion 122 is sealed to the first protrusion 221. The second sealing structure 22 includes a second limiting portion 222. 22. The second limiting part 222 is disposed around the side of the second body 21 facing the first sealing structure 12. The second limiting part 222 is connected to the second body 21. The second limiting part 222 is disposed on the side of the first protrusion 221 near the central axis 3. The second limiting part 222 is connected to the first protrusion 221. At least a portion of the first protrusion 221 protrudes from the side of the second limiting part 222 facing the first sealing structure 12. Along the direction of the arrangement of the first housing 1 and the second housing 2, the second limiting part 222 is connected to the first limiting part 122.

[0041] In this embodiment of the application, by setting the first limiting part 122 and the second limiting part 222, when the first housing 1 and the second housing 2 are assembled, the first housing 1 and the second housing 2 are arranged in a certain direction, and the first housing 1 and the second housing 2 are mutually limited, which can prevent the first housing 1 from being excessively squeezed and causing the local structure inside the charging socket to be squeezed and deformed.

[0042] It should be noted that, in this embodiment, during the assembly of the first housing 1 and the second housing 2, the second housing 2 can be fixed on a fixture, and a movable robotic arm can grasp the first housing 1 and assemble it with the second housing 2. After the first protrusion 221 is inserted into the first groove 121, the end of the first protrusion 221 away from the second body 21 is heat-melted, and the corresponding second housing 2 is gradually pressed towards the first housing 1, forcing the heat-melted portion of the first protrusion 221 into the space between the first protrusion 221 and the inner wall of the first groove 121 and filling the space between them. After the laser beam is withdrawn, the heat-melted portion of the first protrusion 221 gradually cools and solidifies, thereby achieving a sealed connection between the first protrusion 221 and the inner wall of the first groove 121.

[0043] It should also be noted that when the first protrusion 221 is hot-melted, the first housing 1 is pressed down, and the bottom of the first groove 121 squeezes the first protrusion 221. At this time, the bottom of the first groove 121 abuts against the first protrusion 221. Therefore, the hot-melted part of the first protrusion 221 will be tightly bonded to the bottom of the first groove 121, so that the first protrusion 221 will also be sealed to the inner wall of the first groove 121.

[0044] Please refer to the following: Figure 2 , Figure 6 and Figure 7 In some embodiments, the first sealing structure 12 further includes a third limiting part 123, which is disposed around the side of the first body 11 facing the second sealing structure 22 and is connected to the first body 11. The third limiting part 123 is disposed around the side of the first limiting part 122 away from the central axis 3 and is spaced apart from the first limiting part 122 to form a first groove 121. The third limiting part 123 is disposed on the side of the first protrusion 221 away from the first limiting part 122 and is sealed to the first protrusion 221.

[0045] In this embodiment, the third limiting part 123 is used to form the first groove 121 and wrap and limit the first protrusion 221 on the outside of the first protrusion 221, thereby fixing the first protrusion 221 and increasing the bonding area between the first protrusion 221 and the first sealing structure 12, thus ensuring the airtightness of the sealing connection between the first sealing structure 12 and the second sealing structure 22.

[0046] Please see Figure 7 In some embodiments, along the direction in which the first housing 1 and the second housing 2 are arranged, the size of the first groove 121 is a mm, and the size of the third limiting part 123 is b mm, satisfying that a < b.

[0047] In this embodiment, the third limiting part 123 is used to form the first groove 121, and along the direction of the arrangement of the first housing 1 and the second housing 2, the size of the third limiting part 123 is larger than the size of the first groove 121, so that a portion of the third limiting part 123 protrudes from one side of the first groove 121. At this time, when a portion of the first protrusion 221 is heat-melted and overflows between the first groove 121 and the unmelted portion of the first protrusion 221, more overflow space can be provided for the heat-melted portion of the first protrusion 221. When the overall volume of the first protrusion 221 is large, resulting in a large amount of heat-melted portion, more heat-melted portion can overflow between the third limiting part 123 and the unmelted portion of the first protrusion 221, thereby increasing the bonding area between the first protrusion 221 and the first sealing structure 12, thereby improving the sealing effect. At the same time, it can prevent a large amount of heat-melted fluid from overflowing and being exposed outside the first housing 1, resulting in poor appearance, and ensure that the first housing 1 and the second housing 2 can be smoothly assembled into the corresponding mounting hole of the automobile body after sealing connection.

[0048] In some embodiments, along the direction in which the first housing 1 and the second housing 2 are arranged, the size of the first groove 121 is a mm, and the size of the first protrusion 221 protruding from the second limiting portion 222 is c mm, satisfying: a < c.

[0049] In this embodiment of the application, the first protrusion 221 protrudes from the side of the second limiting part 222 facing the first housing 1, and its size is greater than the depth of the first groove 121. This ensures that the first protrusion 221 can smoothly contact the bottom of the first groove 121, thereby facilitating the sealing connection between the inner wall of the first groove 121 and the first protrusion 221.

[0050] It should be noted that when the first protrusion 221 and the first groove 121 are connected by laser welding, the first protrusion 221 needs to be partially heat-melted. At this time, the melted first protrusion 221 and the bottom of the first groove 121 can achieve a sealed bond. Specifically, as the difference between c and a increases, the first protrusion 221 can achieve partial heat fusion and bond with the inner wall of the first groove 121, thus realizing the sealed connection between the first sealing structure 12 and the second sealing structure 22.

[0051] It should also be noted that since the first protrusion 221 will form fluid overflow to the periphery after being hot-melted, in order to ensure the good appearance of the charging socket, it can be further preferred to be 0.2≤ca≤0.8.

[0052] It should also be noted that the specific value range of ca can be any one or any two values ​​from 0.2, 0.21, 0.22, 0.23, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29, 0.3, 0.32, 0.35, 0.38, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, and 0.8. As the value of ca gradually increases, the volume of the first protrusion 221 that can be heat-melted also increases, resulting in more fluid hot-melt plastic overflowing between the inner walls of the first protrusion 221 and the first groove 121. This leads to a tighter sealing connection between the first protrusion 221 and the first groove 121, resulting in better airtightness. When ca < 0.2, the size of the first protrusion 221 that can be heat-melted is small, resulting in poor welding sealing and even situations where welding is impossible.

[0053] It should also be noted that a, b, and c in the embodiments of this application can all be measured using conventional measuring tools such as rulers, micrometers, or vernier calipers.

[0054] The charging socket of this application will be specifically described below with reference to the specific embodiments and comparative examples in Table 1.

[0055] Table 1

[0056]

[0057]

[0058] As shown in the table above, by setting a < b, the first protrusion 221 will not overflow after laser welding and thus will not affect the appearance and external dimensions of the charging socket when it is heated and melted. By setting a < c, the welding of the first protrusion 221 and the inner wall of the first groove 121 can be achieved, and the sealing connection of the first sealing structure 12 and the second sealing structure 22 can be achieved. Further, it is preferable that 0.2 ≤ ca ≤ 0.8.

[0059] Please refer to the following: Figure 6 and Figure 7In some embodiments, the first protrusion 221 includes a first segment 2211 and a second segment 2212. The first segment 2211 is connected to the second body 21 along the direction in which the first housing 1 and the second housing 2 are arranged. The first segment 2211 is disposed in the first groove 121 and is sealed to the inner wall of the first groove 121. When the first protrusion 221 is not sealed to the inner wall of the first groove 121, the second segment 2212 is connected to the side of the first segment 2211 away from the second body 21. When the first protrusion 221 is sealed to the inner wall of the first groove 121, the second segment 2212 is thermally fused into the first groove 121 and is sealed to the inner wall of the first groove 121 and the first segment 2211. The remaining volume of the first groove 121 after accommodating the first segment 2211 is V1mm. 3 The volume of the second segment 2212 is V2 mm. 3 The condition is satisfied that V2 / V1≥0.3.

[0060] This structure allows the first protrusion 221 to have sufficient heat-fused portion to fill the first groove 121 when the first protrusion 221 is sealed to the inner wall of the first groove 121. This ensures that the first segment 2211 and the inner wall of the first groove 121 are filled with sufficient heat-fused second segment 2212, thereby guaranteeing the airtightness of the sealed connection between the first segment 2211 and the first groove 121.

[0061] In this embodiment, the first segment 2211 is disposed within the first groove 121 to achieve mutual positioning and connection between the first housing 1 and the second housing 2. In this embodiment, the first segment 2211 serves as a connection and support, while the second segment 2212 is laser-welded into the first groove 121 and flows within it, filling the space between the inner wall of the first groove 121 and the first segment 2211, thus achieving a sealed connection between the inner wall of the first groove 121 and the first segment 2211, and consequently, a sealed connection between the first housing 1 and the second housing 2.

[0062] It should be noted that this application uses laser welding to heat-melt the second segment 2212 of the first protrusion 221 into the first groove 121, eliminating the cost of manufacturing additional sealing components and reducing assembly processes and difficulty. Simultaneously, by heat-melting the second segment 2212 into the first groove 121, the airtightness of the seal between the first protrusion 221 and the inner wall of the first groove 121 gradually improves through the melting and collapse of the second segment 2212. Specifically, the more of the second segment 2212 melts, the more hot-melt fluid fills the space between the inner wall of the first groove 121 and the first segment 2211, resulting in a larger sealing connection area and thus a better sealing effect.

[0063] It should also be noted that when the first protrusion 221 of this application is not sealed to the inner wall of the first groove 121, the first segment 2211 and the second segment 2212 are connected along the direction of the arrangement of the first housing 1 and the second housing 2. Thus, when the first housing 1 and the second housing 2 are assembled, the second segment 2212 is pre-entered into the first groove 121 and abuts against the bottom of the first groove 121. At this time, by laser welding set on the outside of the first groove 121, laser is released into the first groove 121 to melt at least part of the second segment 2212, thereby reducing the size of the second segment 2212 along the direction of the arrangement of the first housing 1 and the second housing 2, so that the first segment 2211 can enter the first groove 121 more. Simultaneously, the melted portion of the second segment 2212 overflows into the first groove 121 under the pressure of the first segment 2211, and overflows into the space between the first segment 2211 and the inner wall of the first groove 121. As the laser welding stops, the hot-melted second segment 2212 gradually cools down and solidifies and adheres to the side wall between the first segment 2211 and the first groove 121, achieving a sealed connection between the first segment 2211 and the inner wall of the first groove 121. At the same time, the first protrusion 221 abuts against the bottom of the first groove 121 along the direction of the arrangement of the first housing 1 and the second housing 2, and is bonded together by the melted portion of the second segment 2212, achieving a seal at this location.

[0064] It should be noted that the first housing 1 is usually also a one-piece molded plastic injection part, and during the laser welding process, the first protrusion 221 after laser heat melting has a certain fluidity, but the fluidity is much less than that of water. Therefore, when the first housing 1 and the second housing 2 are connected and laser welding is performed, the first housing 1 also needs to be squeezed into the second housing 2 so that the second section 2212 overflows between the first section 2211 and the inner wall of the first groove 121 after heat melting. However, it will not overflow excessively, so it can fully bond the first section 2211 and the inner wall of the first groove 121.

[0065] It should also be noted that the volume ratio of the second segment 2212 to the remaining volume after the first segment 2211 is accommodated in the first groove 121 is V2 / V1≥0.3. Furthermore, in order to prevent the second segment 2212 from overflowing beyond the connection between the second housing 2 and the first housing 1 due to its excessive volume, the volume ratio of the second segment 2212 to the remaining volume after the first segment 2211 is accommodated in the first groove 121 is preferably 0.3≤V2 / V1≤1. At this time, it can be ensured that the second segment 2212 in the fluid state after heat fusion has a large contact bonding area with the first protrusion 221 and the inner wall of the first groove 121, thereby ensuring the airtightness of the sealing connection between the first sealing structure 12 and the second sealing structure 22.

[0066] It should also be noted that the specific numerical range of V2 / V1 can be any one or any two values ​​from the following: 0.3, 0.31, 0.32, 0.33, 0.34, 0.35, 0.36, 0.37, 0.38, 0.39, 0.4, 0.42, 0.45, 0.48, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, and 1. As the value of V2 / V1 gradually increases, the volume of the second segment 2212 within the first groove 121 also increases, thereby achieving a tighter sealing connection between the first protrusion 221 and the first groove 121, resulting in increasingly better airtightness.

[0067] It should also be noted that the specific method for measuring the volume in this application can be determined based on the specific shapes of the first groove 121 and the first protrusion 221. If both the first groove 121 and the second segment of the first protrusion 221 are conventional annular structures, the volume can be calculated using the annular calculation formula and by measuring the corresponding dimensional parameters. If the second segment 2212 of the first groove 121 and the first protrusion 221 are irregularly shaped, a measuring cup and water can be used for measurement. Specifically, water is first poured into the first groove 121 until it is full, and then the water in the first groove 121 is poured into a measuring cup. At this point, the volume of the first groove 121 can be obtained and recorded as V3 mm. 3 Then, a certain volume of water is placed in the measuring cup, and the initial water level is recorded as V4 mm. 3 The second section 2212 was then completely submerged in water, and the water level was recorded as V5 mm. 3 Then, completely submerge the first segment 2211 and the second segment 2212 in the water, and record the current water level as V6 mm. 3 At this point, the volume of the first segment 2211 is (V6-V5) mm. 3 The volume of the second segment 2212 is V2 = (V5 - V4) mm. 3 The remaining volume after the first groove accommodates the first segment 2211 is V1 = (V3 - V6 - V5) mm. 3 Of course, the aforementioned dimensions can also be obtained using 3D scanning and modeling methods.

[0068] The charging socket of this application will be further described in detail below with reference to the specific embodiments and comparative examples in Table 2.

[0069] Table 2

[0070]

[0071]

[0072] As shown in Table 2, in this embodiment, by setting V2 / V1≥0.3, effective welding sealing of the first sealing structure 12 and the second sealing structure 22 can be achieved. Furthermore, to prevent material overflow during laser welding from causing poor appearance, it is preferable that 0.3≤V2 / V1≤1. More preferably, 0.45≤V2≤1.5 and 0.75≤V1≤2.

[0073] Please refer to the following: Figures 5-7 In some embodiments, the first housing 1 includes a fourth limiting part 13, which is disposed on the side of the first body 11 facing the second body 21 and connected to the first body 11. The fourth limiting part 13 and the first body 11 form a second groove 14. The first housing 1 has a first through hole 15, which passes through the first body 11 along the direction in which the first housing 1 and the second housing 2 are arranged, and communicates with the second groove 14. The second housing 2 includes a fifth limiting part 23, which is disposed on the side of the second body 21 facing the first body 11 and connected to the second body 21. The second housing 2 has a second through hole 24, which passes through the second body 21 and the fifth limiting part 23 along the direction in which the first housing 1 and the second housing 2 are arranged, and the fifth limiting part 23 is disposed in the second groove 14. The second through hole 24 communicates with the first through hole 15 through the second groove 14.

[0074] In this embodiment, by setting the fourth limiting part 13 and the fifth limiting part 23 in cooperation, the first housing 1 and the second housing 2 can be positioned and limited during docking, so as to ensure accurate installation of the first housing 1 and the second housing 2. At the same time, it can effectively protect the wiring terminals in the first through hole 15 and the second through hole 24, effectively isolate the second segment 2212 after heat fusion, and prevent the second segment 2212 from overflowing into the first through hole 15 from between the first limiting part 122 and the second limiting part 222 when the volume of the second segment 2212 is large.

[0075] It should be noted that the first sealing structure 12 also includes a welding table 124, which is arranged around the outside of the first body 11 and sealed to the first body 11; the third limiting part 123 is arranged around the welding table 124 on the side away from the first body 11. At this time, the first limiting part 122, the third limiting part 123, and the welding table 124 form a first groove 121. Since the first shell 1 is a light-transmitting shell, the corresponding welding table 124 is also light-transmitting. During laser welding, a pressure plate is pressed onto the welding table 124. The pressure plate is a transparent plate with high light transmittance, such as a glass plate. The high-energy laser beam passes through the pressure plate and enters the welding table 124, and then passes through the welding table 124 to reach the second segment 2212. During the welding process, the pressure plate applies pressure to the welding table 124, and the second segment 2212 abuts against the welding table 124. A high-energy laser beam acts on the second segment 2212, causing it to melt. The molten second segment 2212's supporting force decreases, and as the pressure plate gradually presses down, the molten portion of the second segment 2212 is squeezed to both sides and overflows into the space between the first segment 2211 and the inner wall of the first groove 121. Specifically, the molten second segment 2212 overflows between the first segment 2211 and the third limiting part 123, and between the first segment 2211 and the first limiting part 122, achieving bonding and sealing between the first segment 2211 and the first limiting part 122 and the third limiting part 123, respectively. As the second segment 2212 continues to melt, the overall height of the first protrusion 221 gradually decreases, and the distance between the first limiting part 122 and the second limiting part 222 also gradually decreases. The second segment 2212 can melt to a predetermined moving distance of the pressure plate and then stop. Furthermore, when the first limiting part 122 and the second limiting part 222 abut against each other, the pressure plate stops pressing down and the laser beam withdraws. At this time, the overall volume of the first housing 1 and the second housing 2 after assembly can be smaller and occupy less space. At the same time, if the overall volume of the second segment 2212 is relatively large when the first limiting part 122 and the second limiting part 222 abut against each other, it can overflow between the first limiting part 122 and the second limiting part 222, further improving the sealing performance of the connection between the first housing 1 and the second housing 2.

[0076] In this embodiment, along the direction of the arrangement of the first housing 1 and the second housing 2, the size of the welding station 124 is d mm, satisfying: 1 ≤ d ≤ 2. The specific value range of d can be any one or any two values ​​from 1, 1.11, 1.12, 1.13, 1.14, 1.15, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, and 2. A smaller value of d results in better welding; a larger value of d results in better strength of the welding station 124.

[0077] It should also be noted that d can be measured using measuring tools such as vernier calipers and micrometers. It can also be measured using optical measuring equipment, such as laser rangefinders and projectors, to determine the size by measuring information such as the propagation time of light, reflection or transmission of light.

[0078] For details, please refer to Table 3 for further explanation of the embodiments of this application.

[0079] Table 3

[0080]

[0081] As shown in Table 3, the welding station 124 in this embodiment of the application has good structural strength and welding effect within the range of 1≤d≤2, realizing the sealed connection of the first shell 1 and the second shell 2, and ensuring the strength of the charging socket shell.

[0082] Accordingly, this application also provides a vehicle, including a charging socket and a power battery as described in any of the foregoing embodiments, wherein the charging socket and the power battery are connected by a wire for charging the power battery.

[0083] It is understood that the vehicle described in this application can charge its power battery through this charging socket. Furthermore, the charging socket, once installed on the vehicle body, ensures its airtightness, thereby guaranteeing the safety of the power battery.

[0084] Of course, the charging socket implemented in this application can be used in automobiles, specifically new energy vehicles, as well as in electric motorcycles, electric bicycles, backup power supplies, and other equipment.

[0085] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0086] The foregoing has provided a detailed description of a charging socket and a car provided in the embodiments of this application, and specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A charging socket, characterized in that, include: The first housing (1) includes a first body (11) and a first sealing structure (12), wherein the first sealing structure (12) is disposed around the first body (11) and is connected to the first body (11); The second housing (2) includes a second body (21) and a second sealing structure (22), wherein the second sealing structure (22) is disposed around the second body (21) and is connected to the second body (21); The first sealing structure (12) is sealed to the second sealing structure (22).

2. The charging socket according to claim 1, characterized in that, The first sealing structure (12) has a first groove (121), the opening of which faces the second sealing structure (22); The second sealing structure (22) includes a first protrusion (221), which is disposed on the side of the second body (21) facing the first sealing structure (12). The first protrusion (221) is connected to the second body (21). The first protrusion (221) is disposed in the first groove (121) and is sealed to the inner wall of the first groove (121).

3. The charging socket according to claim 2, characterized in that, The first groove (121) is an annular groove, and the first groove (121) is disposed around the side of the first sealing structure (12) facing the second sealing structure (22). The first protrusion (221) is an annular protrusion, and the first protrusion (221) is disposed around the side of the second body (21) facing the first sealing structure (12).

4. The charging socket according to claim 2, characterized in that, A portion of the first protrusion (221) is thermally fused into the first groove (121) and sealed to the inner wall of the first groove (121).

5. The charging socket according to claim 4, characterized in that, The first housing (1) is a light-transmitting housing.

6. The charging socket according to claim 4, characterized in that, The first sealing structure (12) includes a first limiting part (122), which is disposed around the side of the first body (11) facing the second sealing structure (22) and is connected to the first body (11). The first limiting part (122) is used to form the first groove (121). The charging socket has a central axis (3), and the first limiting part (122) is disposed on the side of the first protrusion (221) near the central axis (3). The first limiting part (122) is sealed to the first protrusion (221). The second sealing structure (22) includes a second limiting part (222), which is disposed around the side of the second body (21) facing the first sealing structure (12). The second limiting part (222) is connected to the second body (21). The second limiting part (222) is disposed on the side of the first protrusion (221) near the central axis (3). The second limiting part (222) is connected to the first protrusion (221). At least a portion of the first protrusion (221) protrudes from the side of the second limiting part (222) facing the first sealing structure (12). Along the direction of the arrangement of the first housing (1) and the second housing (2), the second limiting part (222) is connected to the first limiting part (122).

7. The charging socket according to claim 6, characterized in that, The first sealing structure (12) further includes a third limiting part (123), which is disposed around the side of the first body (11) facing the second sealing structure (22) and is connected to the first body (11). The third limiting part (123) is disposed around the side of the first limiting part (122) away from the central axis (3) and is spaced apart from the first limiting part (122) to form the first groove (121). The third limiting part (123) is disposed on the side of the first protrusion (221) away from the first limiting part (122) and is sealed to the first protrusion (221).

8. The charging socket according to claim 7, characterized in that, Along the direction in which the first housing (1) and the second housing (2) are arranged, the size of the first groove (121) is a mm, and the size of the third limiting part (123) is b mm, satisfying that a < b.

9. The charging socket according to claim 6, characterized in that, Along the direction in which the first housing (1) and the second housing (2) are arranged, the size of the first groove (121) is a mm, and the size of the first protrusion (221) protruding from the second limiting part (222) is c mm, satisfying: a < c.

10. The charging socket according to claim 4, characterized in that, The first protrusion (221) includes: The first segment (2211) is connected to the second body (21) along the direction of the arrangement of the first shell (1) and the second shell (2); the first segment (2211) is disposed in the first groove (121) and is sealed to the inner wall of the first groove (121); The second segment (2212) is connected to the side of the first segment (2211) away from the second body (21) when the first protrusion (221) is not sealed to the inner wall of the first groove (121); when the first protrusion (221) is sealed to the inner wall of the first groove (121), the second segment (2212) is thermally fused into the first groove (121). Wherein, the remaining volume of the first groove (121) after accommodating the first segment (2211) is V1 mm. 3 The volume of the second segment (2212) is V2 mm. 3 The condition is satisfied that V2 / V1≥0.

3.

11. The charging socket according to claim 1, characterized in that, The first housing (1) includes a fourth limiting part (13), which is disposed on the side of the first body (11) facing the second body (21) and connected to the first body (11). The fourth limiting part (13) and the first body (11) form a second groove (14). The first housing (1) has a first through hole (15). Along the direction in which the first housing (1) and the second housing (2) are arranged, the first through hole (15) penetrates the first body (11) and communicates with the second groove (14). The second housing (2) includes a fifth limiting part (23), which is disposed on the side of the second body (21) facing the first body (11) and connected to the second body (21); the second housing (2) has a second through hole (24), which passes through the second body (21) and the fifth limiting part (23) along the direction of the arrangement of the first housing (1) and the second housing (2), and the fifth limiting part (23) is disposed in the second groove (14), and the second through hole (24) communicates with the first through hole (15) through the second groove (14).

12. A car, characterized in that, It includes a charging socket and a power battery as described in any one of claims 1-11, wherein the charging socket is connected to the power battery via a wire for charging the power battery.

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