Alternating current charging socket

Abstract

An AC charging socket of the utility model comprises an AC housing, a fixing member assembly, a tail cover, a cable tail cover, at least two signal terminals with sealing rings, at least two power terminals and at least one PE terminal, one end of each signal terminal is plugged with a PCBA board of the fixing member assembly, and the other end of each signal terminal is limited in the AC housing; one end of the PE terminal and one end of the power terminal sequentially penetrate through the tail cover and the fixing piece assembly and are arranged in the AC shell in a limited mode, and the other end of the PE terminal and the other end of the power terminal extend out of the cable tail cover after being limited through the cable tail cover. The front and the back of the tail cover are respectively clamped with the AC shell and the cable tail cover; the structure of the fixing piece is improved, the assembling process is simplified, the wire harness can be installed after the charging socket is assembled, heat conduction silica gel is added, and the monitoring precision is improved. The structural design of the signal terminal is changed, and the signal terminal is formed in a stamping processing mode, so that the terminal processing efficiency is improved, and the weight of the signal terminal is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of charging sockets, and specifically, to an AC charging socket. Background Art

[0002] The common installation sequence of new energy vehicle charging sockets is to assemble fixing parts, a PCBA board, power terminals and wires into accessories for installation and fixation, and then install relevant accessories such as a sealing ring and a tail cover. Since the wires need to be installed in the early stage, the position and condition of the wires need to be constantly monitored during the installation process. This installation sequence is relatively cumbersome and laborious.

[0003] Moreover, the temperature monitoring of the power terminals inside the charging socket often monitors the temperature inside the connector housing through the temperature sensor on the PCBA board, and then monitors the temperature rise change of the terminals. This method is prone to the problem that there is a large difference between the monitored temperature and the actual temperature. Content of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a new AC charging socket. By optimizing the component design, it meets the requirements of post-installation of the wire harness, simplifies the assembly process, and can also meet the needs of automated equipment. At the same time, thermal conductive silicone is added to more intuitively monitor the temperature rise of the terminals, improving the accuracy and precision of the monitoring.

[0005] The utility model solves the above problems through the following technical solutions:

[0006] An AC charging socket, comprising: an AC housing, a fixing part assembly, a tail cover, a cable tail cover, and at least two signal terminals, at least two power terminals and at least one PE terminal including a sealing ring. One end of the signal terminal is inserted into the PCBA board of the fixing part assembly, and the other end is limited in the AC housing; one end of the PE terminal and the power terminal sequentially passes through the tail cover and the fixing part assembly and is limited in the AC housing, and the other end extends out of the cable tail cover after being limited by the cable tail cover; the front and back of the tail cover are respectively clamped with the AC housing and the cable tail cover; the PE terminal, the signal terminal and the power terminal are axially inserted into the charging socket and penetrate through the fixing part assembly between the AC housing and the tail cover; the thermal conductive silicone of the fixing part assembly is in contact with the power terminal and the temperature sensor to monitor the temperature of the thermal conductive silicone through heat conduction, and then feedback the temperature rise change of the power terminal.

[0007] As a further improvement, the signal terminal, the power terminal and the PE terminal are arranged in three horizontal rows.

[0008] As a further improvement thereof, the signal terminal includes a first inner elastic piece, a first outer elastic piece, and a second inner elastic piece from front to back. The first outer elastic piece is snap-fitted inside the AC housing, and the second inner elastic piece is used to be inserted and snap-fitted with the signal terminal connection post of the PCBA board to prevent withdrawal.

[0009] As a further improvement thereof, the fixing component includes a fixing piece, a thermal conductive silica gel, and a PCBA board. The fixing component is formed with a first mounting opening for arranging a power terminal, a second mounting opening for arranging a PE terminal, and a third mounting opening for arranging a temperature sensor. Among them, the first mounting opening and the second mounting opening are jointly enclosed by the PCBA board, the fixing piece, and the thermal conductive silica gel, and the third mounting opening is formed by a slot opened upward by the thermal conductive silica gel.

[0010] As a further improvement thereof, mounting fixing points are formed outside the second mounting opening so that the thermal conductive silica gel is arranged on the front surface of the fixing piece while avoiding the second mounting opening.

[0011] As a further improvement thereof, an arc surface is formed on the upper part of the thermal conductive silica gel, and the first mounting opening is jointly formed with the fixing piece and the PCBA board, facilitating interference fit after the upper part of the thermal conductive silica gel comes into contact with the power terminal; and the thermal conductive silica gel extends toward the PCBA board side and is fitted with the fixing piece to form the third mounting opening, so that interference fit can be achieved after the temperature sensor comes into contact with the thermal conductive silica gel.

[0012] As a further improvement thereof, a plurality of signal terminal connection posts and a temperature sensor are formed on the front surface of the PCBA board to be inserted and connected with the signal terminal through the signal terminal connection posts.

[0013] As a further improvement thereof, a plurality of low-voltage signal connection posts are formed on the back surface of the PCBA board, and the low-voltage signal connection posts are inserted and connected with a low-voltage signal protection sleeve arranged at the end covered by the tail cover.

[0014] As a further improvement thereof, a first card slot for cooperating with the AC housing is formed outside the front end of the tail cover; a second buckle for cooperating with the cable tail cover is formed outside the rear end of the tail cover; an opening communicating with the moving process hole of the fixing component is formed in the middle of the tail cover; and a tail cover blind plug for blocking the opening corresponding to the moving process hole of the fixing component on the tail cover is provided at the charging socket.

[0015] As a further improvement thereof, a slot hole corresponding to the low-voltage signal connection post arranged on the back surface of the PCBA board of the fixing component is further formed in the middle of the tail cover; a low-voltage signal protection sleeve is arranged in the slot hole and is inserted and connected with the low-voltage signal connection post.

[0016] Compared with the prior art, the present utility model has the following advantages and beneficial effects:

[0017] The present utility model improves the structure of the fixing part, simplifies the assembly process, allows the wiring harness to be installed after the charging socket is assembled, and reduces the related operations of pre-installing the fixing part for the wiring harness. By the downward displacement of the fixing part, the axial displacement of the power terminal is restricted to ensure the installation position of the power terminal. Thermal conductive silicone is added, and the temperature sensor integrated on the PCBA board monitors the temperature of the thermal conductive silicone through heat conduction, and then feeds back the change in the temperature rise of the power terminal to improve the monitoring accuracy. The structure design of the signal terminal is changed and formed by stamping, which improves the processing efficiency of the terminal and reduces the weight of the signal terminal. Description of the Drawings

[0018] Figure 1 is an exploded view of an AC charging socket according to the present utility model;

[0019] Figure 2 is an installation diagram of the AC housing and the signal terminal according to the present utility model;

[0020] Figure 3 is an installation diagram of the thermal conductive silicone and the fixing part according to the present utility model;

[0021] Figure 4 is an installation diagram of the fixing part and the AC housing according to the present utility model;

[0022] Figure 5 is an installation diagram of the fixing part assembly according to the present utility model;

[0023] Figure 6 is an installation diagram of the signal terminal and the PCBA board according to the present utility model;

[0024] Figure 7 is a schematic diagram before the displacement of the fixing part assembly installed in the AC housing according to the present utility model;

[0025] Figure 8 is a schematic diagram after the displacement of the fixing part assembly installed in the AC housing according to the present utility model;

[0026] Figure 9 is a matching diagram of the PCBA board and the solid thermal conductive silicone according to the present utility model;

[0027] Figure 10 is a matching diagram of the power terminal and the AC housing and the fixing part according to the present utility model;

[0028] Figure 11 is a matching diagram of the fixing part assembly and the power terminal according to the present utility model.

[0029] Figure 12 is a schematic diagram of the structure of the rear end of the end cap according to the present utility model.

[0030] Reference Signs:

[0031] 1. AC housing; 11. First buckle; 12. AC wire sealing body; 13. Cable end cover; 14. Low-voltage signal protection sleeve; 2. Signal terminal; 21. First inner elastic piece; 22. First outer elastic piece; 23. Second inner elastic piece; 3. Fixing component assembly; 4. Fixing piece; 41. First installation opening; 42. Second installation opening; 43. Third installation opening; 44. Installation and fixing point; 45. Moving process hole; 5. Thermal conductive silica gel; 6. PCBA board; 61. Signal terminal connection post; 62. Temperature sensor; 63. Low-voltage signal connection post; 7. End cover sealing ring; 8. End cover; 81. First card slot; 82. Second buckle; 9. End cover blind plug; 10. Power terminal. Detailed implementation manners

[0032] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar components or components with the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of the present application. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and should not be construed as a limitation to the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0033] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0034] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, or an indirect connection through an intermediate medium, or the internal connection or interaction relationship of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0035] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is the orientation or positional relationship based on the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0036] In addition, the terms "comprising", "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or display comprising a series of steps or units need not be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or displays.

[0037] The following will be combined with Figures 1 - 12 , and a detailed description will be given to an AC charging socket involved in the embodiments of the present application. It should be noted that the following embodiments are only used to explain the present application and do not constitute a limitation to the present application.

[0038] Embodiment:

[0039] Combined with the attached Figures 1 - 12 As shown, an AC charging socket includes: an AC housing 1, at least two signal terminals 2 with sealing rings, a fixing component 3, a tail cover 8, a cable tail cover 13, at least one PE terminal with a sealing ring, and at least two power terminals 10 with sealing rings. One end of the signal terminal is inserted into the PCBA board of the fixing component, and the other end is limited in the AC housing; one end of the PE terminal and the power terminal sequentially passes through the tail cover and the fixing component and is limited in the AC housing, and the other end is limited by the cable tail cover 13 and extends out of the cable tail cover; the front and back of the tail cover are clamped with the AC housing 1 and the cable tail cover 13.

[0040] In this embodiment, sealing rings are provided for the signal terminal, the power terminal, and the PE terminal to ensure the sealing of the terminal. Two signal terminals are provided, one PE terminal is provided, and two power terminals are provided. The two power terminals are respectively located on two heat-conducting silica gels and are closely matched. Of course, the specific quantity can be set according to requirements.

[0041] Furthermore, through holes for arranging the signal terminal, the PE terminal, and the power terminal are formed in the AC housing 1; the PE terminal, the signal terminal, and the power terminal are inserted into the charging socket along the axial direction and penetrate through the fixing component between the AC housing and the tail cover. A first buckle 11 that is clamped with the first card slot 81 at the front end of the tail cover 8 is formed outside the AC housing 1. In this embodiment, the signal terminal, the power terminal, and the PE terminal are arranged in three horizontal rows.

[0042] The signal terminal 2 includes a first inner elastic piece 21, a first outer elastic piece 22, and a second inner elastic piece 23 from front to back. The first outer elastic piece 22 is clamped inside the AC housing, and the second inner elastic piece 23 is used to be inserted and clamped with the signal terminal connection post 61 of the PCBA board to prevent withdrawal. Preferably, two first outer elastic pieces of each signal terminal are provided and are arranged back to back up and down.

[0043] The fixing component assembly 3 includes a fixing component 4, a thermal conductive silica gel 5, and a PCBA board 6. Among them, the fixing component assembly is formed with a first mounting opening 41 for setting power terminals, a second mounting opening 42 for setting PE terminals, and a third mounting opening 43 for setting temperature sensors. Among them, the first mounting opening 41 and the second mounting opening 42 are jointly enclosed by the PCBA board 6, the fixing component 4, and the thermal conductive silica gel 5, and the third mounting opening 43 is formed by an upward slot of the thermal conductive silica gel 5.

[0044] Specifically, a mounting and fixing point 44 is formed outside the second mounting opening 42 on the front surface of the fixing component 4 to arrange the thermal conductive silica gel 5 on the front surface of the fixing component 4 while avoiding the second mounting opening 42; an arc surface is formed on the upper part of the thermal conductive silica gel 5 to jointly form the first mounting opening with the fixing component 4 and the PCBA board 6, which is convenient for the upper part of the thermal conductive silica gel 5 to be in interference fit after contacting the power terminal; and the thermal conductive silica gel 5 also extends to the side of the PCBA board and is embedded with the fixing component 4 to form the third mounting opening 43, so that the temperature sensor can be in interference fit after contacting the thermal conductive silica gel 5, so as to be able to reflect the temperature of the power terminal through the temperature measurement of the thermal conductive silica gel.

[0045] On the front surface of the PCBA board 6, a number of signal terminal connection posts 61 and a temperature sensor 62 are formed to be plugged into the signal terminals through the signal terminal connection posts 61; the temperature sensor 62 is arranged in the third mounting opening 43 and contacts the thermal conductive silica gel. The temperature sensor integrated on the PCBA board monitors the temperature of the thermal conductive silica gel through heat conduction, and then feeds back the change in the temperature rise of the power terminal to improve the monitoring accuracy. On the back surface of the PCBA board 6, a number of low-voltage signal connection posts 63 are formed, and the low-voltage signal connection posts 63 are plugged into the low-voltage signal protection sleeve 14 covered at the end of the tail cover 8. In this embodiment, the temperature sensor 62 is embedded in the third mounting opening 43 from top to bottom.

[0046] Furthermore, the PE terminal, the signal terminal, and the power terminal are axially inserted into the charging socket and penetrate through the fixing component assembly between the AC housing and the tail cover.

[0047] Before the displacement of the fixing component assembly, the signal terminal 2, the power terminal 10, and the PE terminal are all located below the corresponding through holes of the fixing component assembly, and there is a certain distance between the position before the displacement of the fixing component and the position of the power terminal to ensure the requirement of post-installation of the wire harness. When the fixing component assembly is inserted into the AC housing from the rear end of the AC housing, the left and right positions of the fixing component assembly are limited by the action of the vertical limiting ribs, and then the fixing component assembly is slid upward along the vertical limiting ribs to displace the fixing component assembly upward. The signal terminal 2, the power terminal, and the PE terminal installed on the AC housing 1 all move upward relative to the fixing component assembly so that the signal terminal, the power terminal, and the front-end PE terminal are respectively located on the upper side of the corresponding through holes of the fixing component and are in interference fit. After the displacement of the fixing component assembly, the contact point of the temperature sensor is located in the third mounting opening of the thermal conductive silicone and is in interference fit with the thermal conductive silicone; the upper side of the thermal conductive silicone 5 is in interference fit with the power terminal in the second mounting opening to better achieve transmission.

[0048] A first card slot 81 is formed on the front end of the tail cover 8, and a second buckle 82 is formed on the rear end of the tail cover 8 for snap connection with the cable tail cover. An opening communicating with the moving process hole 45 of the fixing component is formed in the middle of the tail cover 8, and the tail cover blind plug 9 is used to block the opening corresponding to the moving process hole of the fixing component assembly on the tail cover. A slot hole corresponding to the low-voltage signal connection column arranged on the back surface of the PCBA board of the fixing component assembly is also formed in the middle of the tail cover 8, and the low-voltage signal protection sleeve 14 is arranged in the slot hole and is inserted into the low-voltage signal connection column.

[0049] The power terminal 10 includes a second outer elastic piece arranged on the front end and an AC wire sealing body 12 arranged on the rear end. The second outer elastic piece cooperates with the AC housing to prevent the power terminal from retreating; after the power terminal 10 is installed in a limited manner with the fixing component assembly, the AC wire sealing body 12 is located outside the fixing component assembly, and the end of the power terminal 10 where the AC wire sealing body 12 is arranged extends out of the cable tail cover 13. In this embodiment, the middle part of the power terminal is fitted and limited with the fixing component assembly, and a structure matching the middle part of the power terminal is formed on the fixing component assembly.

[0050] Preferably, a tail cover sealing ring 7 is also arranged inside the tail cover to circumferentially seal the fixing component.

[0051] Specifically, the assembly process is as follows:

[0052] Pre-install the signal terminal 2, PE terminal, and power terminal in the AC housing 1 and limit them through the AC housing 1; then pass the signal terminal 2, PE terminal, and power terminal with the installed AC housing 1 through the assembled fixing component assembly, move the fixing component assembly upward, and make the thermal conductive silicone of the fixing component assembly tightly interference-fit with the power terminal and the temperature sensor of the fixing component assembly; set a tail cover sealing ring 7 in the tail cover 8 and snap-connect it to the AC housing, and set a tail cover blind plug 9, a cable tail cover 13, and a low-voltage signal protection sleeve at the rear end of the tail cover to complete the installation of the entire charging socket.

[0053] The present utility model improves the structure of the fixing component assembly, simplifies the assembly process, the wire harness can be installed after the charging socket is assembled, and the related operations of pre-installing the wire harness on the fixing component are reduced. By the upward displacement of the fixing component assembly, the axial displacement of the power terminal is restricted to ensure the installation position of the power terminal. The thermal conductive silicone is added, and the temperature sensor integrated on the PCBA board monitors the temperature of the thermal conductive silicone through heat conduction, and then feeds back the change in the temperature rise of the power terminal to improve the monitoring accuracy. The structure design of the signal terminal is changed and formed by stamping, which improves the processing efficiency of the terminal and reduces the weight of the signal terminal.

[0054] Although the present utility model has been described herein with reference to the illustrative embodiments of the present utility model, the above embodiments are only the preferred embodiments of the present utility model, and the embodiments of the present utility model are not limited by the above embodiments. It should be understood that those skilled in the art can design many other modifications and embodiments, and these modifications and embodiments will fall within the scope and spirit of the principles disclosed in this application.

Claims

1. An AC charging socket, characterized in that, include: The AC housing, a fixing assembly, a tail cover, a cable tail cover, and at least two signal terminals, at least two power terminals, and at least one PE terminal with a sealing ring. One end of the signal terminal is plugged into the PCBA board of the fixing assembly, and the other end is limited and set in the AC housing. One end of the PE terminal and the power terminal passes through the tail cover and the fixing assembly in sequence and is limited and set in the AC housing. The other end is limited by the cable tail cover and then extends out of the cable tail cover. The front and rear ends of the tail cover are respectively connected to the AC housing and the cable tail cover. The PE terminal, signal terminal, and power terminal are axially inserted into the charging socket and pass through the fixing assembly between the AC housing and the tail cover. The thermal conductive silicone of the fixing assembly contacts the power terminal and the temperature sensor to monitor the temperature of the thermal conductive silicone through heat conduction, thereby providing feedback on the temperature rise of the power terminal.

2. The AC charging socket according to claim 1, wherein The signal terminals, power terminals and PE terminals are arranged in three horizontal rows.

3. The AC charging socket according to claim 1, wherein, The signal terminal includes a first inner spring piece, a first outer spring piece and a second inner spring piece from front to back. The first outer spring piece is snapped into the inside of the AC shell, and the second inner spring piece is used to be plugged into and snapped into the signal terminal connecting column of the PCBA board to prevent it from being withdrawn.

4. The AC charging socket according to claim 1, wherein, The fixing assembly includes a fixing, thermal conductive silicone and a PCBA board. The fixing assembly is formed with a first mounting port for setting a power terminal, a second mounting port for setting a PE terminal, and a third mounting port for setting a temperature sensor. The first mounting port and the second mounting port are enclosed by the PCBA board, the fixing and the thermal conductive silicone, and the third mounting port is formed by an upward groove of the thermal conductive silicone.

5. The AC charging socket according to claim 4, wherein, An installation fixing point is formed outside the second installation opening so that the thermal conductive silica gel is arranged on the front side of the fixing component to avoid the second installation opening.

6. The AC charging socket according to claim 4, wherein, The upper part of the thermally conductive silicone is formed with an arc surface, which together with the fixing piece and the PCBA board forms the first mounting opening, so that the upper part of the thermally conductive silicone is in contact with the power terminal and an interference fit is formed; and the thermally conductive silicone extends to one side of the PCBA board and is embedded with the fixing piece to form the third mounting opening, so that the temperature sensor is in contact with the thermally conductive silicone and an interference fit is formed.

7. The AC charging socket according to claim 4, characterized in that, The front side of the PCBA board is formed with a plurality of signal terminal connection posts and a temperature sensor, which are plugged into the signal terminals through the signal terminal connection posts.

8. The AC charging socket according to claim 4, wherein A plurality of low-voltage signal connection columns are formed on the back of the PCBA board, and the low-voltage signal connection columns are plugged into the low-voltage signal protection cover provided at the rear end of the tail cover.

9. The AC charging socket according to claim 1, wherein A first card slot is formed on the outside of the front end of the tail cover to match the AC shell; a second buckle is formed on the outside of the rear end of the tail cover to match the cable tail cover; an opening is formed in the middle of the tail cover to communicate with the movable process hole of the fixing component; the charging socket blindly blocks the opening corresponding to the movable process hole of the corresponding fixing component on the tail cover.

10. The AC charging socket according to claim 9, characterized in that, A slot corresponding to the low-voltage signal connection column provided on the back of the PCBA board of the fixing component is also formed in the middle of the tail cover; a low-voltage signal protective cover is provided in the slot and is plugged into the low-voltage signal connection column.

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