A conductive connection structure of a charging plug, a charging plug and a charging terminal

Abstract

The present invention discloses a conductive connection structure of a charging plug, a charging plug and a charging terminal. The charging plug has a support portion. The conductive connection structure includes an electrode portion, a conductive rod and a power transmission component. The electrode portion is arranged on the insulating support portion, and a plurality of electrode portions are arranged at intervals; the conductive rod is inserted into the insulating support portion, and a plurality of conductive rods are arranged corresponding to the plurality of electrode portions one by one, and one end of the conductive rod is electrically connected to the electrode portion; the power transmission component is electrically connected to the other end of the conductive rod. Conductivity between the electrode portion and the power transmission component is achieved through the conductive rod. When assembling the charging plug, the conductive rod is inserted into the conductive channel, one end of the conductive rod is electrically connected to the electrode portion, and the other end of the conductive rod is electrically connected to an external power transmission component, so that the assembly of the conductive connection structure of the charging plug can be easily achieved, the disassembly and assembly efficiency is improved, an efficient conductive connection is established, and the requirement for stable charging with a large current can be met.

Description

Technical Field

[0001] The present invention relates to the technical field of charging of electric vehicles, and particularly relates to a conductive connection structure of a charging plug, a charging plug and a charging terminal. Background Art

[0002] A charging terminal product is a charging device for charging an electric vehicle or a hybrid vehicle, which includes a body and a charging plug electrically connected to the body. After the vehicle travels to a designated position, the vehicle is charged, discharged, etc. by docking the charging plug with a vehicle power receptacle.

[0003] The inventor knows a charging plug that adopts a cable-terminal-ring charging method. Specifically, the charging plug includes an insulating part and a conductive connection structure. An insulating support part is connected to the conductive connection structure for supporting the conductive connection structure. A conductive channel is provided inside the insulating support part. The conductive connection structure includes a conductive ring and a conductive terminal. The conductive ring is sleeved on the insulating support part as an electrode. The conductive terminal is fixedly installed inside the conductive channel of the insulating support part. The conductive terminal is electrically connected to the conductive ring. One end of the conductive terminal is connected to a cable, and the cable extends out of the insulating support part along the conductive channel from the conductive terminal to conduct electricity with other conductive elements.

[0004] However, in the process of implementing the technical solution of the present invention in the embodiments of the present application, the inventors of the present application found that the above technical solution has at least the following technical problems:

[0005] When assembling the charging plug, it is necessary to set the position of the conductive terminal corresponding to the conductive ring, and at the same time, the cable and the conductive terminal are connected inside the conductive channel, resulting in complex installation of the conductive connection structure and inconvenient maintenance.

[0006] The above information disclosed in this background art is only used to increase the understanding of the background art of the present application. Therefore, it may include prior art that is not known to those of ordinary skill in the art. Summary of the Invention

[0007] In view of this, one of the objectives of the present invention is to provide a conductive connection structure of a charging plug, a charging plug and a charging terminal, to solve the technical problem of how to improve the disassembly and assembly efficiency of the conductive connection structure while ensuring charging reliability, and further establish an efficient conductive connection, and be able to meet the requirements of stable charging with large current.

[0008] To achieve the above-mentioned invention objective, the present invention adopts the following technical solutions to be implemented:

[0009] A conductive connection structure of a charging plug, the charging plug further having an insulating support portion, the conductive connection structure comprising: an electrode portion disposed on the insulating support portion, the electrode portion being plural, and the plural electrode portions being spaced apart; a conductive rod inserted into the insulating support portion, the conductive rod being plural, the plural conductive rods being provided in one-to-one correspondence with the plural electrode portions, one end of the conductive rod being electrically connected to the electrode portion; and a power transmission element electrically connected to the other end of the conductive rod.

[0010] Further, the other end of the conductive rod is an extending end located outside the insulating support portion, and the power transmission element is electrically connected to the extending end.

[0011] Further, a stepped portion is provided on the extending end, and the stepped portion abuts against the insulating support portion.

[0012] Further, the electrode portion has a socket portion having a socket hole, the socket hole being sleeved with the conductive rod, and the socket portion being electrically connected to the conductive rod.

[0013] Further, an elastic contact member is provided in the socket hole, the elastic contact member being a spring finger or a spring piece, and one end of the conductive rod being electrically connected to the elastic contact member.

[0014] Further, there are four electrode portions, the four electrode portions being spaced apart; there are four conductive rods, one end of each of the four conductive rods being electrically connected to one of the four electrode portions in one-to-one correspondence, and the other end of each conductive rod being electrically connected to the power transmission element respectively.

[0015] A charging plug includes an insulating support portion and a conductive connection structure, the insulating support portion having a conductive channel, the conductive connection structure comprising: an electrode portion disposed on the insulating support portion, the electrode portion being plural, and the plural electrode portions being spaced apart; a conductive rod sleeved with the conductive channel, the conductive rod being plural, the plural conductive rods being provided in one-to-one correspondence with the plural electrode portions, one end of the conductive rod being electrically connected to the electrode portion, and the other end of the conductive rod being an extending end located outside the conductive channel; and a power transmission element electrically connected to the extending end.

[0016] Further, the insulating support portion includes: a first insulating support portion having a male plug-in portion with at least two first conductive channels provided therein; a second insulating support portion having a female plug-in portion with at least two second conductive channels provided therein; the first insulating support portion and the second insulating support portion are alternately arranged, the male plug-in portion is plugged into the female plug-in portion, and the first conductive channels and the second conductive channels are connected to form the conductive channel; the first insulating support portion and the second insulating support portion separate the plurality of electrode portions from each other.

[0017] Further, the first insulating support portion and the second insulating support portion are provided with an axial connector penetrating from top to bottom, and the axial connector is used to limit the axial movement of the first insulating support portion and the second insulating support portion; a signal line channel for a signal line to penetrate is formed inside the axial connector.

[0018] A charging terminal includes the charging plug as described above.

[0019] Compared with the prior art, the advantages and positive effects of the present invention are:

[0020] The embodiments described in the present application implement the conduction mode of the electrode portion - conductive rod - power transmission element. Specifically, the present application realizes the conduction between the electrode portion and the power transmission element by providing a conductive rod. When assembling the charging plug, the conductive rod is plugged into the conductive channel of the insulating support portion. One end of the conductive rod is electrically connected to the electrode portion, and the other end of the conductive rod is electrically connected to an external power transmission element, so that the assembly of the conductive connection structure of the charging plug can be easily realized. Thus, compared with the prior art, there is no need to adjust the relative position between the conductive rod and the electrode portion for a long time. At the same time, the connection position with the power transmission element is moved from inside the conductive channel to outside the conductive channel, solving the technical problem in the prior art of how to improve the disassembly and assembly efficiency of the conductive connection structure while ensuring the charging reliability, and then establishing an efficient conductive connection and being able to meet the requirement of stable charging with large current.

[0021] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become clearer. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 Schematic diagram of the structures of the first insulating support portion and the second insulating support portion in an embodiment of the charging plug of the present invention;

[0024] Figure 2 Cross-sectional view of the first insulating support portion and the second insulating support portion in an embodiment of the charging plug of the present invention;

[0025] Figure 3 Schematic diagram of the structure after assembly of the first insulating support portion, the second insulating support portion, and the end insulating portion in an embodiment of the charging plug of the present invention;

[0026] Figure 4 is Figure 3 cross-sectional view;

[0027] Figure 5 Schematic diagram of the structure of an embodiment of the charging plug of the present invention;

[0028] Figure 6 is Figure 5 explosion diagram;

[0029] Figure 7 Schematic diagram of the conductive connection structure between the conductive element and the electrode portion in an embodiment of the charging plug of the present invention;

[0030] Figure 8 is Figure 7 explosion diagram;

[0031] Figure 9 Cross-sectional view of an embodiment of the charging plug of the present invention (only for showing the conductive element, the electrode portion, and the cable);

[0032] Figure 10 Schematic diagram of the structure of the electrode portion in an embodiment of the charging plug of the present invention.

[0033] Wherein,

[0034] 100 - first insulating support portion, 110 - first insulating support portion A, 120 - first insulating support portion B, 130 - first body, 140 - male plugging portion, 141 - first conductive channel, 150 - second plugging portion, 151 - first through hole;

[0035] 200 - second insulating support portion, 210 - second insulating support portion A, 220 - second insulating support portion B, 230 - second body, 240 - female plugging portion, 241 - arc inlet portion, 250 - second conductive channel, 260 - second through hole, 270 - limiting portion;

[0036] 300 - Electrode part, 310 - Electrode body, 320 - Mounting hole, 330 - Socket hole, 340 - Socket part, 350 - Elastic contact, 361 - Electrode part A, 362 - Electrode part B, 363 - Electrode part C, 364 - Electrode part D;

[0037] 400 - Conductive element, 410 - Conductive rod, 411 - Extended end, 412 - Step part, 420 - Cable plugging part, 421 - Cable perforation;

[0038] 500 - Axial connector, 510 - Nut;

[0039] 600 - Terminal insulation part, 610 - Guide surface;

[0040] 700 - Conductive channel, 710 - Conductive channel A, 720 - Conductive channel C, 730 - Conductive channel D;

[0041] 800 - Power transmission element. Detailed implementation

[0042] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0043] It should be noted that in the description of the present invention, the terms indicating the direction or positional relationship such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the direction or positional relationship shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0044] The present invention discloses a charging plug. By establishing an electrical connection with a charging socket provided on an electric vehicle, the electric vehicle can be charged.

[0045] Figure 5 is a schematic structural diagram of the charging plug. Figure 6Exploded view of a charging plug. The charging plug mainly includes components such as a first insulating support portion 100, a second insulating support portion 200, a plurality of electrode portions 300, a conductive element 400, a power transmission element 800, etc. Among them, an electrical connection structure formed by the electrode portion 300, the conductive element 400, and the power transmission element 800 forms a conductive loop. By alternately arranging the first insulating support portion 100 and the second insulating support portion 200, a plurality of electrode portions 300 are spaced apart to meet the insulation requirements during charging.

[0046] Figure 1 Schematic structural diagram of the first insulating support portion 100 and the second insulating support portion 200 Figure 2 Cross-sectional view of the first insulating support portion 100 and the second insulating support portion 200 Figure 3 Schematic structural diagram after the first insulating support portion 100 and the second insulating support portion 200 are assembled Figure 4 Cross-sectional view after the first insulating support portion 100 and the second insulating support portion 200 are assembled. The first insulating support portion 100 is an insulating part, which has a male plug portion 140, and at least two first conductive channels 141 for the conductive element 400 to penetrate are provided in the male plug portion 140. The second insulating support portion 200 is also an insulating part, which has a female plug portion 240, and at least two second conductive channels 250 for the conductive element 400 to penetrate are provided in the female plug portion 240. The first insulating support portion 100 and the second insulating support portion 200 are alternately arranged, the male plug portion 140 is inserted into the female plug portion 240, and the first conductive channel 141 and the second conductive channel 250 form a conductive channel 700. There are a plurality of electrode portions 300, and the first insulating support portion 100 and the second insulating support portion 200 space apart the plurality of electrode portions 300 to meet the insulation requirements. After the conductive element 400 penetrates into the corresponding conductive channel 700, it is electrically connected to the corresponding electrode portion 300, and then a conductive path is formed. The conductive path between the positive and negative two electrode portions 300 can form a conductive loop.

[0047] In the embodiment described in the present application, through the alternate plug-in arrangement of the first insulating support portion 100 and the second insulating support portion 200, a conductive channel is formed after the male plug portion 140 is inserted into the female plug portion 240. A plurality of insulating surfaces will be formed at the plug-in position of the two, thereby improving the insulation effect and being able to meet the charging requirements of large current.

[0048] One end of the conductive component 400 is electrically connected to the electrode part 300, and the other end of the conductive component 400 is electrically connected to the power transmission component 800 to form a conductive path. The conductive component 400 is preferably a conductive rod 410. In this embodiment, the conductive mode of the electrode part - conductive rod - power transmission component is realized. By setting the conductive rod 410, the conduction between the electrode part 300 and the power transmission component 800 is achieved. When assembling the charging plug, the conductive rod 410 is inserted into the conductive channel 700 formed by the first insulating support part 100 and the second insulating support part 200. One end of the conductive rod 410 is electrically connected to the electrode part 300, and the other end of the conductive rod 410 is electrically connected to the external power transmission component 800. Thus, the assembly of the conductive connection structure of the charging plug can be easily realized. Compared with the prior art, there is no need to adjust the relative position between the conductive rod 410 and the electrode part 300 for a long time, solving the technical problem in the prior art of how to improve the disassembly and assembly efficiency of the conductive connection structure while ensuring the charging reliability, and then establishing an efficient conductive connection and being able to meet the requirement of stable charging with large current.

[0049] One end of the conductive rod 410 that is electrically connected to the power transmission component 800 is the protruding end 411 of the conductive rod 410. The protruding end 411 is preferably located outside the first insulating support part 100 or the second insulating support part 200. The power transmission component 800 is electrically connected to the protruding end 411. In this way, the electrical connection position between the conductive rod 410 and the power transmission component 800 is moved from inside the conductive channel 700 to outside the conductive channel 700, which is further beneficial to improving the disassembly and assembly efficiency of the conductive connection structure. In the charging plug disclosed in this embodiment, there are at least two electrode parts 300, and the electrodes of these two electrode parts 300 are opposite. Correspondingly, the number of conductive rods 410 is also at least two. Taking the charging plug having two electrode parts 300 as an example, there are also two conductive rods 410. One conductive rod 410 is electrically connected to the positive electrode part 300, and the other conductive rod 410 is electrically connected to the negative electrode part 300. The external power transmission component 800 corresponds to the conductive rod 410 and is electrically connected to one end of the conductive rod 410, thereby forming a conductive loop for easy charging. Correspondingly, at least two insulating parts are required, namely the first insulating support part 100 and the second insulating support part 200, to separate the two electrode parts 300 to achieve insulation.

[0050] In practical applications, the number of the first insulating support part 100, the second insulating support part 200, and the electrode part 300 can be flexibly set according to the conductive loop required for charging, with strong applicability.

[0051] This embodiment gives a specific implementation method for forming a two-way conductive loop. Refer to Figures 1 to 4, along the direction in which the conductive rod 410 is inserted into the conductive channel 700, the end where the conductive rod 410 starts to be inserted is defined as the front end of the charging plug, and the opposite end is the end. The number of the first insulating support portions 100 is two, and four first conductive channels 141 are respectively formed on each first insulating support portion 100. The number of the second insulating support portions 200 is two, and four second conductive channels 250 are respectively formed on each second insulating support portion 200. The number of the electrode portions 300 is four and they are arranged between the first insulating support portions 100 and the second insulating support portions 200. The electrode portion 300 at the end is arranged on the second insulating support portion 200. In this way, the first conductive channels 141 and the second conductive channels 250 together form four conductive channels 700. Figure 4 Due to the cutting position, only three of the conductive channels 700 are shown in the view in Figure 4 . The number of the conductive rods 410 is four, and they are respectively inserted into one of the conductive channels 700 and electrically connected to the corresponding electrode portions 300. The positive and negative electrode portions 300 form a loop, and two conductive loops are formed in total.

[0052] That is to say, the conductive channels 700 formed by the first conductive channels 141 and the second conductive channels 250 do not all penetrate through all the first insulating support portions 100 and the second insulating support portions 200. For the convenience of specific description, the two first insulating support portions 100 are defined as the first insulating support portion A 110 and the first insulating support portion B 120, the two second insulating support portions 200 are defined as the second insulating support portion A 210 and the second insulating support portion B 220, the four electrode portions 300 are defined as the electrode portion A 361, the electrode portion B 362, the electrode portion C 363, and the electrode portion D 364, and the four conductive channels 700 are defined as the conductive channel A 710, the conductive channel B (not marked), the conductive channel C 720, and the conductive channel D 730. Refer to Figure 3 , Figure 4 , Figures 7 to 9, the conductive channel A 710 is composed of the first conductive channel 141 on the first insulating support portion A 110. The conductive channel A 710 is in communication with the electrode portion A 361. One of the conductive rods 410 penetrates into the conductive channel A 710 and is electrically connected to the electrode portion A 361. The conductive channel B is composed of the first conductive channel 141 on the first insulating support portion A 110 and the second conductive channel 250 on the second insulating support portion A 210. The conductive channel B is in communication with the electrode portion B 362. One of the conductive rods 410 penetrates into the conductive channel B and is electrically connected to the electrode portion B 362. The conductive channel C 720 is composed of the first conductive channel 141 on the first insulating support portion A 110, the second conductive channel 250 on the second insulating support portion A 210, and the first conductive channel 141 on the first insulating support portion B 120. The conductive channel C 720 is in communication with the electrode portion C 363. One of the conductive rods 410 penetrates into the conductive channel C 720 and is in communication with the electrode portion C 363. The conductive channel D 730 is composed of the first conductive channel 141 on the first insulating support portion A 110, the second conductive channel 250 on the second insulating support portion A 210, the first conductive channel 141 on the first insulating support portion B 120, and the second conductive channel 250 on the second insulating support portion B 220. The conductive channel D 730 is in communication with the electrode portion D 364. One of the conductive rods 410 penetrates into the conductive channel D 730 and is electrically connected to the electrode portion D 364. Through the cooperation among the above four conductive channels 700, the electrode portion 300, and the conductive rods 410, two conductive loops can be formed.

[0053] For the second insulating support portion B 220 at the end, the second conductive channel 250 formed therein does not have to penetrate through the second insulating support portion B 220, such that while the conductive rod 410 is electrically connected to the electrode portion D 364, the conductive rod 410 will not fall off from within the second insulating support portion B 220. The closed structure of the second insulating support portion B 220 at the end plays a blocking role on the conductive rod 410.

[0054] In the charging plug disclosed in this embodiment, the first insulating support portion 100, the second insulating support portion 200, and the electrode portion 300 are coaxially arranged, with a compact structure and small occupied space, which is conducive to reducing the volume. While the first insulating support portion 100 and the second insulating support portion 200 play a role in installing, limiting, and supporting the electrode portion 300, they are also conducive to improving the insulation effect and meeting the requirements of high-current charging. According to the application scenario and charging requirements, the numbers of the first insulating support portion 100, the second insulating support portion 200, and the electrode portion 300 can be flexibly selected to form the required number of conductive loops, with strong applicability.

[0055] The electrode portion 300 is preferably a closed-loop structure, which is conducive to improving the conductive efficiency and is safe and reliable.

[0056] Refer to the schematic structural diagrams of the first insulating support part 100 and the second insulating support part 200 Figure 1 and Figure 2 . The first insulating support part 100 includes a first body 130, on which a male plug-in part 140 is provided, and a first conductive channel 141 is formed inside the male plug-in part 140. The male plug-in parts 140 are located on both sides of the first body 130 to facilitate plugging with the adjacent second insulating support part 200. The second insulating support part 200 includes a second body 230, female plug-in parts 240 are provided on opposite sides of the second body 230, and a second conductive channel 250 is formed inside the second body 230 and the female plug-in parts 240. The male plug-in part 140 is inserted into the second conductive channel 250 to achieve the plug-in connection between the first insulating support part 100 and the second insulating support part 200, and at the same time achieve the communication between the first conductive channel 141 and the second conductive channel 250 to facilitate the insertion of the conductive rod 410. The plug-in between the first conductive channel 141 and the second conductive channel 250 can adopt an interference fit to improve the connection reliability.

[0057] Furthermore, refer to Figure 4 and Figure 5 , the first insulating support part 100 and the second insulating support part 200 are provided with an axial connector 500 penetrating from top to bottom (i.e., from the front end to the end), and the axial connector 500 is used to limit the axial movement of the first insulating support part 100 and the second insulating support part 200, further improving the connection reliability between the first insulating support part 100 and the second insulating support part 200.

[0058] Specifically, the axial connector 500 is in a long strip shape. Refer to Figure 1 , a second plug-in part 150 is provided on the first insulating support part 100, a first through hole 151 is formed inside the second plug-in part 150, a second through hole 260 is formed on the second insulating support part 200, the second plug-in part 150 is inserted into the second through hole 260, the first through hole 151 is communicated with the second through hole 260, and the axial connector 500 is simultaneously inserted into the first through hole 151 and the second through hole 260 and penetrates through all the first insulating support parts 100 and the second insulating support parts 200. Nuts 510 are tightened at both ends of the axial connector 500 to fasten the coaxially arranged multiple first insulating support parts 100 and second insulating support parts 200. This connection structure is simple, reliable, and easy to install.

[0059] In order to further improve the connection reliability and stability, the number of axial connectors 500 can be multiple. In this embodiment, there are four axial connectors 500, and they are symmetrically distributed along the circumference to provide a uniform axial force for the charging plug. Figure 6In the exploded view, for the sake of view simplicity, only one of the axial connectors 500 is shown.

[0060] The first body 130 and the second body 230 are preferably in a disc-like structure. The outer peripheral wall of the female plug-in portion 240 is recessed inside the outer peripheral walls of the first body 130 and the second body 230. The electrode portion 300 is disposed around the outer periphery of the female plug-in portion 240, and the first body 130 and the second body 230 play a role in mounting and limiting the electrode portion 300. Preferably, the outer peripheral wall of the electrode portion 300, the outer peripheral wall of the first body 130, and the outer peripheral wall of the second body 230 are on the same circumferential plane, so as to facilitate the overall insertion of the charging plug into the charging socket docked therewith for convenient use and operation.

[0061] For the structural schematic diagram of the electrode portion 300, refer to Figure 10 , which includes an electrode body 310. The electrode body 310 is in an annular structure, and an installation hole 320 and a socket hole 330 are formed on the electrode body 310. The installation hole 310 is used for plugging with the female plug-in portion 240 to realize the installation of the electrode portion 300 between the first insulating support portion 100 and the second insulating support portion 200. The socket hole 330 communicates with the conductive channel 700, so that after the conductive rod 410 passes through the conductive channel 700 and penetrates, it can communicate with the socket hole 330, thereby realizing the electrical connection between the conductive rod 410 and the electrode portion 300.

[0062] Refer to Figure 9 , in order to clearly show the conductive connection structure between the conductive rod 410 and the electrode portion 300, Figure 9 only the electrode portion 300, the conductive rod 410, and the power transmission element 800 are sectioned in Figure 4 . The first insulating support portion 100 and the second insulating support portion 200 are not sectioned. For the sectional view after the assembly of the first insulating support portion 100 and the second insulating support portion 200, refer to

[0063] Further, refer to Figure 1 and Figure 10 , the female plug-in portion 240 has an inwardly curved portion 241 that curves inwardly towards the center of the female plug-in portion 240. The electrode body 310 has a socket portion 340 that curves outwardly towards the center of the installation hole 320. A conductive hole is formed on the socket portion. The inwardly curved portion 241 is snap-fitted with the socket portion 340, so that after the installation hole 320 is plugged with the female plug-in portion 240, relative rotation therebetween will not occur, making the installation structure of the electrode portion 300 more reliable and stable and improving the stability of the charging current.

[0064] For the same second insulating support portion 200, the arc inlet portions 241 on both sides thereof are staggeredly arranged, so that the two socket holes 330 on the electrode portions 300 located on both sides of the second insulating support portion 200 are also staggeredly arranged, so that different conductive rods 410 can be electrically connected to the corresponding electrode portions 300 after passing through. The layered and spaced arrangement forms of the first insulating support portion 100, the second insulating support portion 200, and the electrode portion 300 are compact in structure, good in insulation effect, and can meet the charging requirements of large current.

[0065] Further, referring to Figure 1 , a limiting portion 270 is provided on the second body 230 near the arc inlet portion 241. The limiting portion 270 is opposite to the socket hole 330, and the end of the conductive rod 410 is limited within the limiting portion 270. After the conductive rod 410 is electrically connected to the electrode portion 300 through the conductive channel 700 and the socket hole 330, the limiting portion 270 prevents the end of the conductive rod 410 from shifting, making the electrical connection between the conductive rod 410 and the electrode portion 300 more reliable. In this embodiment, the limiting portion 270 is a round hole with a guiding structure at the opening, and the end of the conductive rod 410 can just abut against the round hole.

[0066] On the basis of the above embodiment, a terminal insulating portion 600 is fixedly connected to the end of the second insulating support portion B 220. Referring to Figure 5 and Figure 6 , the electrode portion D 364 is located between the second insulating support portion B 220 and the terminal insulating portion 600, and the outer peripheral wall of the terminal insulating portion 600 has a guiding surface 610. The terminal insulating portion 600 makes the installation structure of the electrode portion D 364 more reliable on the one hand, and on the other hand, the guiding surface 610 facilitates the charging plug to be inserted into the charging socket, facilitating operation and use.

[0067] The fixed connection structure between the terminal insulating portion 600 and the second insulating support portion B 220 is preferably realized by using an axial connector 500 together, that is, the end of the axial connector 500 penetrates through the terminal insulating portion 600 to achieve an integrated structure, making the overall structure more stable.

[0068] On the basis of the above embodiment, a signal line channel (not labeled) for a signal line (not shown) to penetrate is formed inside the axial connector 500. One end of the signal line penetrates through the axial connector 500 and then exposes from the terminal insulating portion 600 to form a contact. When the charging plug is docked with the charging socket on the electric vehicle, the contact on the charging plug just contacts the contact on the charging socket, thereby establishing a signal connection between the charging terminal with the charging plug and the electric vehicle for data transmission.

[0069] The axial connector 500 not only fastens the first insulating support portion 100, the second insulating support portion 200, and the terminal insulating portion 600, but also protects the signal line.

[0070] Referring to Figure 8 and Figure 9 , the protruding end 411 provided at one end of the conductive rod 410 has a cable insertion portion 420. A cable through hole 421 for the power transmission element 800 to penetrate is formed inside the line insertion portion 420. The power transmission element 800 penetrates into the cable through hole 421 and is electrically connected to the conductive rod 410. The cable insertion portion 420 is located on the same side of the first insulating support portion A 110. Multiple power transmission elements 800 can be directly connected on this side, which is convenient for the quick connection of the power transmission elements 800. A conductive path is formed by the sequential connection of the power transmission element 800, the conductive rod 410, and the annular electrode portion 300. An efficient conductive connection can be formed by inserting the conductive rod 410, and the insertion process is simple, which is beneficial to improving the installation efficiency.

[0071] In this embodiment, multiple electrode portions 300, multiple first insulating support portions 100, and multiple second insulating support portions 200 are coaxially arranged. The conductive rod 410 extends in a direction parallel to the axis direction of the electrode portion 300, and the conductive rod 410 is located inside the closed-loop structure formed by the electrode portion 300. In this way, the conductive rod 410 is not exposed, making full use of the internal structure of the entire charging plug, which is beneficial to reducing the volume and is safer and more reliable.

[0072] A stepped portion is provided on the protruding end, and the stepped portion abuts against the first insulating support portion or the second insulating support portion. In this embodiment, the stepped portion abuts against the first insulating support portion. When the conductive element is inserted into the conductive channel, through the abutment between the stepped portion and the first insulating support portion, it can be ensured that the conductive element can be exactly electrically connected to the electrode portion after being inserted in place, improving the installation efficiency.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A conductive connection structure of a charging plug, the charging plug further having an insulating support portion, characterized in that, The conductive connection structure includes: An electrode portion, the electrode portion is disposed on the insulating support portion, there are a plurality of the electrode portions, the plurality of electrode portions are spaced apart, and the insulating support portion separates the plurality of electrode portions; A conductive rod, the conductive rod is inserted into the insulating support portion, there are a plurality of the conductive rods, the plurality of conductive rods are arranged in one-to-one correspondence with the plurality of electrode portions, and one end of the conductive rod is electrically connected to the electrode portion; A power transmission element, the power transmission element is electrically connected to the other end of the conductive rod; The electrical connection structure formed by the electrode portion, the conductive rod, and the power transmission element forms a conductive loop.

2. The conductive connection structure of the charging plug according to claim 1, wherein: The other end of the conductive rod is an extending end, the extending end is located outside the insulating support portion, and the power transmission element is electrically connected to the extending end.

3. The conductive connection structure of the charging plug according to claim 2, wherein: A stepped portion is provided on the extending end, and the stepped portion abuts against the insulating support portion.

4. The conductive connection structure of the charging plug according to claim 2, wherein: The electrode portion has a socket portion, the socket portion has a socket hole, the socket hole is sleeved with the conductive rod, and the socket portion is electrically connected to the conductive rod.

5. The conductive connection structure of the charging plug according to claim 4, wherein: An elastic contact member is provided in the socket hole, the elastic contact member is a spring finger or a spring piece, and one end of the conductive rod is electrically connected to the elastic contact member.

6. The conductive connection structure of the charging plug according to any one of claims 1 to 5, wherein: There are four electrode portions, and the four electrode portions are spaced apart; There are four conductive rods, one end of the four conductive rods is electrically connected to the four electrode portions in one-to-one correspondence, and the other end of each conductive rod is respectively electrically connected to the power transmission element.

7. A charging plug, characterized in that, Including an insulating support portion and a conductive connection structure, the insulating support portion has a conductive channel, and the conductive connection structure includes: An electrode portion, the electrode portion is disposed on the insulating support portion, there are a plurality of the electrode portions, the plurality of electrode portions are spaced apart, and the insulating support portion separates the plurality of electrode portions; A conductive rod, the conductive rod is sleeved with the conductive channel, there are a plurality of the conductive rods, the plurality of conductive rods are arranged in one-to-one correspondence with the plurality of electrode portions, one end of the conductive rod is electrically connected to the electrode portion, the other end of the conductive rod is an extending end, the extending end is located outside the conductive channel, after the conductive rod penetrates into the corresponding conductive channel, it is electrically connected to the corresponding electrode portion, thereby forming a conductive path, and the conductive path between the positive and negative two electrode portions forms a conductive loop; A power transmission element, the power transmission element is electrically connected to the extending end.

8. The charging plug according to claim 7, wherein: The insulating support portion includes: A first insulating support portion, the first insulating support portion has a male plug portion, and at least two first conductive channels are provided in the male plug portion; The second insulating support part, the second insulating support part has a female plug-in part, and at least two second conductive channels are arranged in the female plug-in part; The first insulating support part and the second insulating support part are arranged alternately, the male plug-in part is plugged into the female plug-in part, and the first conductive channel and the second conductive channel are communicated to form the conductive channel; The first insulating support part and the second insulating support part separate a plurality of the electrode parts.

9. The charging plug according to claim 8, wherein The first insulating support part and the second insulating support part are provided with an axial connector penetrating from top to bottom, and the axial connector is used to limit the axial movement of the first insulating support part and the second insulating support part; A signal line channel for a signal line to penetrate is formed inside the axial connector.

10. A charging terminal, characterized in that, Comprising the charging plug according to any one of claims 7 to 9.

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