Electrical connectors, connection devices, methods and equipment

By using the fluidity of a liquid conductive medium in electrical connectors, the problem of increased contact resistance after insertion and removal is solved, achieving a stable and safe electrical connection.

CN116014476BActive Publication Date: 2026-03-06MIRATTERY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-10-22
Publication Date
2026-03-06

AI Technical Summary

Technical Problem

After repeated plugging and unplugging, the elasticity of the socket contacts of existing electrical connectors decreases, leading to increased contact resistance and even open circuits, posing a risk of thermal failure and combustion.

Method used

An electrical connector filled with a liquid conductive medium has its cavity divided into a first sub-cavity and a second sub-cavity by a first valve and a second valve. After the connector is connected, the second valve abuts against the connector, releasing the liquid conductive medium into the second sub-cavity and making contact with the connector. The fluidity of the liquid conductive medium reduces the contact resistance.

Benefits of technology

It effectively reduces the contact resistance during connector connection, avoids the drop in positive pressure on the contact surface, improves the stability and safety of the connection, and prevents thermal failure and combustion risks.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention relates to an electrical connector, a connection device, a method, and an apparatus. The electrical connector includes a housing and a connection structure, wherein the connection structure includes a first valve and a second valve. The first valve is located at the end and isolates the cavity from the external environment. It has a sealed interface for close contact with the connector when it is connected. The second valve is located inside the housing and is spaced apart from the first valve. The first and second valves divide the cavity from the inside to the outside into a first sub-cavity and a second sub-cavity. The first sub-cavity is filled with a liquid conductive medium. The second valve is used to abut against the connector after the connector is connected through the sealed interface, so as to release the liquid conductive medium into the second sub-cavity and make contact with the connector. In this way, due to the flow characteristics of the liquid conductive medium, it can make full contact with the connector without the problem of pressure drop at the contact surface, thereby reducing the contact resistance when connecting to the connector.
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Description

Technical Field

[0001] This invention relates to the field of electrical connector technology, and in particular to an electrical connector, connector device, method and equipment. Background Technology

[0002] Electrical connectors, as important connecting components in electrical systems, are widely used in fields such as integrated circuits and electric vehicles.

[0003] Currently, electrical connectors primarily use sockets and plugs for mechanical connection. The contact resistance between the plug and socket depends on the normal force and contact area on the contact surfaces. After repeated insertion and removal, the elasticity of the socket's contacts decreases or slight plastic deformation occurs, causing a decrease in normal force, leading to an increase in contact resistance, or even an open circuit. If the contact resistance between the socket and plug is too high, a large amount of heat will be generated after current flows, causing thermal failure of the connector, or even fire. Summary of the Invention

[0004] Therefore, it is necessary to provide an electrical connector that can reduce the contact resistance between the connector and the plug during insertion.

[0005] An electrical connector, used in a plug, comprising:

[0006] A housing having a cavity formed within it, the housing including an end communicating with the cavity and the external environment;

[0007] The plug-in structure includes:

[0008] A first valve is disposed at the end and isolates the cavity from the external environment. The first valve has a sealed interface for close contact with the connector when the connector is connected.

[0009] The second valve is disposed within the housing and spaced apart from the first valve. The first valve and the second valve divide the cavity from the inside to the outside into a first sub-cavity and a second sub-cavity, wherein the first sub-cavity is filled with a liquid conductive medium. The second valve is used to abut against the plug after the plug is connected through the sealed interface, so as to release the liquid conductive medium into the second sub-cavity and contact the plug.

[0010] In one embodiment, the second valve includes a valve body and a valve core, a transition chamber is formed in the valve body, the transition chamber is in communication with the first sub-cavity, and the valve core is used to connect the transition chamber and the second sub-cavity when it abuts against the plug, so that the liquid conductive medium flows into the second sub-cavity.

[0011] In one embodiment, the valve core includes:

[0012] The spring includes a first end and a second end, the first end being connected to the valve body;

[0013] A valve cap, connected to the second end, is used to isolate the transition chamber and the second sub-cavity, and retracts and compresses the spring when it abuts against the plug to connect the transition chamber and the second sub-cavity.

[0014] In one embodiment, the first valve is further provided with an injection port for injecting the liquid conductive medium.

[0015] In one embodiment, the number of the ends and the plug-in structures are the same and there are multiple of them, and each plug-in structure is provided in a one-to-one correspondence with each of the ends.

[0016] In one embodiment, the liquid conductive medium is a low-melting-point conductive medium.

[0017] An electrical connection device, comprising:

[0018] Connectors; and

[0019] Electrical connectors of any of the above embodiments.

[0020] An electrical connection method, applied to an electrical connection device, the method comprising:

[0021] Insert the connector into the sealed interface of the first valve and abut against the second valve to release the liquid conductive medium into the second sub-cavity and make contact with the connector.

[0022] In one embodiment, the first sub-cavity is filled with a low-melting-point conductive medium, and the method further includes, before inserting the connector into the sealed interface of the first valve and abutting against the second valve:

[0023] The first sub-cavity is heated to convert the low-melting-point conductive medium into the liquid conductive medium.

[0024] In one embodiment, when the first valve has an injection port, the method further includes:

[0025] The liquid conductive medium is injected into the second sub-cavity through the injection port.

[0026] In one embodiment, the method further includes:

[0027] The first sub-cavity and the second sub-cavity are heated to obtain the liquid conductive medium;

[0028] Disconnect the connector from the second valve to stop the second valve from releasing the liquid conductive medium into the second sub-cavity;

[0029] The liquid conductive medium inside the second sub-cavity is extracted through the injection port;

[0030] Pull the connector out of the sealed interface of the first valve.

[0031] An electrical connection device includes an electrical connection means, and

[0032] The controller includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the steps of any of the methods described above.

[0033] The aforementioned electrical connector includes a housing and a plug-in structure. The plug-in structure includes a first valve and a second valve. The first valve is located at the end and isolates the cavity from the external environment. It has a sealed interface for close contact with the plug when it is connected. The second valve is located inside the housing and is spaced apart from the first valve. The first and second valves divide the cavity from the inside to the outside into a first sub-cavity and a second sub-cavity. The first sub-cavity is filled with a liquid conductive medium. The second valve is used to abut against the plug after it is connected through the sealed interface, so as to release the liquid conductive medium into the second sub-cavity and make contact with the plug. In this way, due to the flow characteristics of the liquid conductive medium, it can make full contact with the plug without the problem of pressure drop at the contact surface, thereby reducing the contact resistance when connecting to the plug. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of an electrical connector according to one embodiment;

[0036] Figure 2 This is a schematic diagram of the structure of an electrical connector according to another embodiment;

[0037] Figure 3 This is a schematic diagram of the structure of an electrical connector according to another embodiment;

[0038] Figure 4 This is a schematic diagram of the structure of the first valve in one embodiment;

[0039] Figure 5 This is a schematic diagram of the structure of the first valve in the case of contact in one embodiment;

[0040] Figure 6 This is a schematic diagram of the structure of the first valve in another embodiment;

[0041] Figure 7 This is a schematic diagram of the structure of the first valve in the case of contact in another embodiment;

[0042] Figure 8 This is a schematic diagram of the structure of an electrical connector according to another embodiment.

[0043] Component designation explanation:

[0044] Connector: 100; Housing: 101; First Valve: 102; Injection Port: 1021; Sealing Connector: 103; Second Valve: 104; First Sub-Cavity: 01; Second Sub-Cavity: 02; Transition Chamber: 03; Valve Body: 1041; Valve Cap: 1042; Spring: 1043; Valve Tube: 1044; Through Hole: 1045 Detailed Implementation

[0045] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0047] It is understood that the terms "first," "second," etc., used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0048] It is understood that the term "connection" in the following embodiments should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have electrical signal or data transmission with each other.

[0049] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. Meanwhile, the term “and / or” as used in this specification includes any and all combinations of the associated listed items.

[0050] This invention provides an electrical connector for use with a plug 100, such as... Figure 1 As shown, the electrical connector includes a housing 101 and a plug-in structure. A cavity is formed inside the housing 101, and the housing 101 includes an end that communicates with the cavity and the external environment. The plug-in structure includes a first valve 102 and a second valve 104. The first valve 102 is located at the end and isolates the cavity from the external environment. The first valve 102 has a sealing interface 103 for making tight contact with the plug 100 when it is connected. The second valve 104 is located inside the housing 101 and is spaced apart from the first valve 102. The first valve 102 and the second valve 104 divide the cavity from the inside to the outside into a first sub-cavity 01 and a second sub-cavity 02. The first sub-cavity 01 is filled with a liquid conductive medium. The second valve 104 is used to abut against the plug 100 after the plug 100 is connected through the sealing interface 103, so as to release the liquid conductive medium into the second sub-cavity 02 and make contact with the plug 100.

[0051] Specifically, when the connector 100 is inserted, it first enters the second sub-cavity 02 through the sealed interface 103 of the first valve 102, and then abuts against the second valve 104, causing the liquid conductive medium in the first sub-cavity 01 to flow into the second sub-cavity 02 and come into contact with the connector 100, thereby establishing a connection between the liquid conductive medium and the connector 100. Because the sealed interface 103 can make tight contact with the connector 100 when it is inserted, the liquid conductive medium in the second sub-cavity 02 will not flow out through the sealed interface 103, but will instead make full contact with the connector 100.

[0052] It can be understood that after the connector 100 comes into contact with the second valve 104, the liquid conductive medium discharged is sufficient to reach the liquid level threshold of the second sub-cavity 02, thus enabling it to contact the connector 100; or the second sub-cavity 02 stores a liquid conductive medium other than the liquid conductive medium discharged from the first sub-cavity 01, and the superposition of the two liquid conductive media allows the conductive medium in the second sub-cavity 02 to reach the liquid level threshold, thus enabling it to contact the connector 100; or the discharged liquid conductive medium is sufficient to reach the liquid level threshold of the second sub-cavity 02, and the second sub-cavity 02 also stores a liquid conductive medium other than the liquid conductive medium discharged from the first sub-cavity 01, so that the conductive medium in the second sub-cavity 02 can exceed the liquid level threshold, thereby improving the contact effect between the liquid conductive medium and the connector 100. The two liquid conductive media can be of the same type; the conductive medium can fully contact the connector 100 when it reaches the liquid level threshold.

[0053] In this embodiment, the diameter of the sealing interface 103 of the first valve 102 can be equal to the diameter of the plug 100, allowing the plug 100 to be inserted and to make tight contact with the sealing interface 103. In one embodiment, the sealing interface 103 may also be provided with an elastic sealing ring. When the plug 100 is not inserted, the diameter of the elastic sealing ring is smaller than that of the plug 100. When the plug 100 is inserted, the elastic sealing ring can be expanded by the plug 100 to allow the plug 100 to be inserted and to maintain tight contact with it. This not only secures the plug 100 but also prevents the liquid conductive medium in the second sub-cavity 02 from flowing out of the sealing interface 103. Furthermore, when the sealing interface 103 is provided with an elastic sealing ring, the diameter of the sealing interface 103 of the first valve 102 can be larger than the diameter of the plug 100. The elastic sealing ring provides a sealing effect and eliminates stress between the sealing interface 103 and the plug 100.

[0054] Specifically, electrical connectors can be connected to external cables to connect the liquid conductive medium to the external cables, thereby enabling the liquid conductive medium to access external circuits. This is possible when there is only one end and only one connector is inserted into the end (e.g., Figure 1 As shown in the figure, this connector can be connected to an external circuit through a liquid conductive medium.

[0055] The electrical connector of this embodiment establishes an electrical connection by using a liquid conductive medium to contact the plug 100. Since the main materials of the socket and plug are nickel-plated copper or tin-plated copper, after long-term use, the inner copper will diffuse to the surface of the plating. The copper that diffuses to the surface is easily oxidized by air, forming copper oxide deposits with poor conductivity, thereby increasing the contact resistance. In addition, the contact resistance may also increase due to the possible decrease in the positive pressure of the contact surface when the socket and plug are connected. Compared with ordinary sockets, the electrical connector of this embodiment uses the fluidity of liquid to reduce the contact resistance when connected to the plug 100, and can also release the contact stress with the plug 100, avoiding the situation where the socket and plug are momentarily loosened and cause a partial circuit break during large vibrations or collisions.

[0056] In one embodiment, the number of ends and plug-in structures are the same and there are multiple of them, with each plug-in structure corresponding to each end.

[0057] For example, the housing 101 may have two ends, in which case there are also two plug-in structures, that is, the number of the first valve 102 and the second valve 104 are also two each, such as Figure 2 As shown, the connector can connect two plugs 100, thus establishing an electrical connection between the two plugs 100. In one embodiment, the end of the housing 101 may include three valves, in which case the number of the first valve 102 and the second valve 104 are also three, as shown. Figure 3 As shown, the connector can connect to three plugs 100, thus establishing an electrical connection between the three plugs 100. It should be understood that... Figure 2 and Figure 3 The two cases of the specific number of ends, first valve 102 and second valve 104 are only shown as examples. In fact, there can be multiple valves to establish a connection between multiple connectors.

[0058] In one embodiment, the second valve 104 may include a valve body 1041 and a valve core. A transition chamber 03 is formed in the valve body 1041. The transition chamber 03 communicates with the first sub-cavity 01. The valve core is used to connect the transition chamber 03 and the second sub-cavity 02 when it abuts against the plug 100, so that the liquid conductive medium flows into the second sub-cavity 02.

[0059] It is understood that the valve core is located inside the valve body 1041. In the initial state, the valve core isolates the transition chamber 03 from the second sub-cavity 02 and can have elasticity. When the connector 100 abuts against the valve core and causes the valve core to contract, the transition chamber 03 and the second sub-cavity 02 are connected.

[0060] In one embodiment, the valve core may include a valve cap 1042 and a spring 1043. The spring 1043 includes a first end and a second end. The first end is connected to the valve body 1041. The valve cap 1042 is connected to the second end. The valve cap 1042 is used to isolate the transition chamber 03 and the second sub-cavity 02, and retracts and compresses the spring 1043 when it abuts against the connector 100 to connect the transition chamber 03 and the second sub-cavity 02.

[0061] It can be understood that one end of the spring 1043 is fixedly connected to the valve body 1041, and the other end is fixedly connected to the valve cap 1042. In the initial state, due to the elastic force of the spring 1043, the valve cap 1042 is located between the transition chamber 03 and the second sub-cavity 02, thus isolating the transition chamber 03 and the second sub-cavity 02. Figure 4 As shown; when the connector 100 abuts against the valve cap 1042, the valve cap 1042 retracts under the pressure of the connector 100 and compresses the spring 1043, thereby connecting the transition chamber 03 and the second sub-cavity 02. A schematic diagram of the connector 100 abutting against the valve cap 1042 can be found in the diagram. Figure 5 As shown.

[0062] In one embodiment, the valve core may include a valve cap 1042, a spring 1043, and a valve tube 1044, such as Figure 6 As shown, the spring 1043 includes a first end and a second end. The first end is connected to the valve body 1041. The valve cap 1042 is connected to the second end. The valve cap 1042 is used to isolate the transition chamber 03 and the second sub-cavity 02. When it abuts against the connector 100, it retracts and compresses the spring 1043 to connect the transition chamber 03 and the second sub-cavity 02. A portion of the transition chamber 03 is formed in the cavity of the valve tube 1044. The spring 1043 passes through the cavity of the valve tube 1044. One end of the valve tube 1044 is fixedly connected to the valve cap 1042, and the end connected to the valve cap 1042 has a through hole 1045.

[0063] It is understood that the liquid conductive medium inside the cavity of valve tube 1044 can flow through the through hole 1045 to the transition chamber 03 outside the cavity of valve tube 1044. In the initial state, due to the elastic force of spring 1043, valve cap 1042 is located between transition chamber 03 and second sub-cavity 02, isolating transition chamber 03 and second sub-cavity 02. Figure 6 As shown; when the connector 100 abuts against the valve cap 1042, under the pressure of the connector 100, the valve cap 1042 and the valve tube 1044 retract and compress the spring 1043, thereby connecting the transition chamber 03 and the second sub-cavity 02. A schematic diagram of the connector 100 abutting against the valve cap 1042 can be found in the diagram. Figure 7 As shown.

[0064] The valve tube 1044 and the valve cap 1042 can be integrally formed. The valve tube 1044 can be used to limit the movement direction of the spring 1043. For example, the diameter of the valve tube 1044 can be set so that the movement direction of the spring 1043 is parallel to the movement direction of the connector 100. In addition, the valve tube 1044 can also be used to limit the maximum depth of the connector 100 when it is inserted. For example, the length of the valve tube 1044 can be set so that when the connector 100 reaches the maximum depth, the first sub-cavity 01 and the second sub-cavity 02 can still be connected through the transition chamber 03.

[0065] In one embodiment, the first valve 102 is further provided with a liquid injection port 1021 for injecting a liquid conductive medium.

[0066] It is understandable that, to avoid insufficient liquid conductive medium in the second sub-cavity 02, which would prevent adequate contact with the connector 100, an injection port 1021 can be opened in the first valve 102 to inject additional liquid conductive medium. Figure 1 For example, in the embodiment, the first valve 102 with an injection port 1021 can be referred to. Figure 8 As shown. In addition, the injection port 1021 can also be used to extract the liquid conductive medium in the second sub-cavity 02.

[0067] In one embodiment, the liquid conductive medium may be a low-melting-point conductive medium.

[0068] It is understood that low-melting-point conductive media are solid at low temperatures and liquid at high temperatures. Therefore, the temperature of the low-melting-point conductive media can be increased during the insertion process of the connector 100 to keep it in a liquid state, and the temperature can be decreased after insertion is complete or before insertion to keep it in a solid state. This ensures its stability, improves the stability of its connection with the connector 100, and prevents the low-melting-point conductive media from overflowing. Examples of low-melting-point conductive media include mercury, gallium, sodium-potassium alloys, and tin-bismuth alloys.

[0069] This invention also provides an electrical connection device, including a plug 100 and an electrical connector of any of the above embodiments.

[0070] This invention also provides an electrical connection method for use in an electrical connection device. The method includes inserting a plug 100 into the sealed interface 103 of a first valve 102 and abutting against a second valve 104 to release a liquid conductive medium into a second sub-cavity 02 and into contact with the plug 100.

[0071] It is understood that when the connector 100 is inserted, it first enters the second sub-cavity 02 through the sealed interface 103 of the first valve 102, and then abuts against the second valve 104, causing the liquid conductive medium in the first sub-cavity 01 to flow into the second sub-cavity 02 and come into contact with the connector 100, thereby establishing a connection between the liquid conductive medium and the connector 100. Because the sealed interface 103 can make tight contact with the connector 100 when it is inserted, the liquid conductive medium in the second sub-cavity 02 will not flow out through the sealed interface 103, but will instead make full contact with the connector 100.

[0072] In one embodiment, the first sub-cavity 01 is filled with a low-melting-point conductive medium. Before inserting the connector 100 into the sealed interface 103 of the first valve 102 and abutting against the second valve 104, the method further includes heating the first sub-cavity 01 to convert the low-melting-point conductive medium into the liquid conductive medium.

[0073] It is understandable that low-melting-point conductive media are solid at low temperatures and liquid at high temperatures. Therefore, the temperature of the low-melting-point conductive media can be increased during the insertion of the connector 100, causing it to be in a liquid state. Due to the low melting point characteristic of the low-melting-point conductive media, it can be easily stored at low temperatures and can achieve low-resistance connections at higher temperatures.

[0074] In one embodiment, when the first valve 102 is provided with a liquid injection port 1021, the method further includes injecting a liquid conductive medium into the second sub-cavity 02 through the liquid injection port 1021.

[0075] It is understandable that, in order to avoid insufficient liquid conductive medium in the second sub-cavity 02, which would prevent it from making full contact with the connector 100, additional liquid conductive medium can be injected through the injection port 1021 after the first valve 102 is inserted into the connector 100.

[0076] In one embodiment, the method further includes heating the electrical connector to obtain a liquid conductive medium, then pulling the connector 100 away from the second valve 104 to stop the second valve 104 from releasing the liquid conductive medium into the second sub-cavity 02, and finally extracting the liquid conductive medium in the second sub-cavity 02 through the injection port 1021, and then pulling the connector 100 out of the sealing interface 103 of the first valve 102.

[0077] It is understandable that when the connector 100 is inserted into the electrical connector, the low-melting-point conductive medium inside the electrical connector may be solid due to the influence of the external ambient temperature. At this time, the connector 100 is fixed inside the electrical connector by the low-melting-point conductive medium and cannot be pulled out. Therefore, the low-melting-point conductive medium can be converted into a liquid state by heating, and then the connector 100 can be pulled away from the second valve 104 so that the second valve 104 stops releasing the liquid conductive medium into the second sub-cavity 02. Then, the liquid conductive medium in the second sub-cavity 02 is extracted through the injection port 1021. After the liquid conductive medium is extracted, the connector 100 is pulled out from the sealing interface 103 of the first valve 102. This can prevent the liquid conductive medium in the second sub-cavity 02 from flowing out with the connector 100 when the connector 100 is pulled out from the sealing interface 103 of the first valve 102.

[0078] In one embodiment, if the low-melting-point conductive medium in the electrical connector is liquid, the connector 100 can be directly pulled away from the second valve 104 so that the second valve 104 stops releasing the liquid conductive medium into the second sub-cavity 02. Finally, the liquid conductive medium in the second sub-cavity 02 is extracted through the injection port 1021, and then the connector 100 is pulled out of the sealing interface 103 of the first valve 102.

[0079] This invention also provides an electrical connection device, which includes the electrical connection apparatus of any of the above embodiments, and a controller. The controller includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the steps of any of the above electrical connection methods.

[0080] In the description of this specification, references to terms such as "some embodiments," "other embodiments," and "ideal embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.

[0081] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0082] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An electrical connector, comprising: The application is applied to a plug-in connector, comprising: a shell, a cavity is formed in the shell, the shell comprises an end part which communicates with the cavity and the external environment; a plug-in structure, comprising: a first valve, which is arranged at the end part and separates the cavity and the external environment, the first valve is provided with a sealing interface, which is used for being in close contact with the plug-in connector when the plug-in connector is connected; the diameter of the sealing interface of the first valve is equal to the diameter of the plug-in connector; a second valve, which is arranged in the shell and is separated from the first valve, the first valve and the second valve divide the cavity from inside to outside into a first sub-cavity and a second sub-cavity, wherein the first sub-cavity is filled with a liquid conductive medium; the second valve is used for being in abutment with the plug-in connector after the plug-in connector is connected through the sealing interface, so as to flow the liquid conductive medium to the second sub-cavity and be in contact with the plug-in connector; the second valve comprises a valve body and a valve core, the valve body is formed with a transition warehouse, the transition warehouse communicates with the first sub-cavity, and the valve core is used for communicating the transition warehouse and the second sub-cavity when being in abutment with the plug-in connector, so as to flow the liquid conductive medium into the second sub-cavity.

2. An electrical connector as claimed in claim 1, wherein the sealing interface is provided with an elastic sealing ring, when the plug-in connector is not inserted, the diameter of the elastic sealing ring is smaller than that of the plug-in connector, and when the plug-in connector is inserted, the elastic sealing ring can be expanded by the plug-in connector, so that the plug-in connector can be inserted.

3. An electrical connector as claimed in claim 1, wherein the valve core comprises: a spring, comprising a first end and a second end, the first end is connected with the valve body; a valve cap, which is connected with the second end, the valve cap is used for isolating the transition warehouse and the second sub-cavity, and is retracted and compresses the spring when being in abutment with the plug-in connector, so as to communicate the transition warehouse and the second sub-cavity.

4. The electrical connector of claim 1, wherein, the first valve is also provided with a liquid injection port, which is used for injecting the liquid conductive medium.

5. The electrical connector of claim 1, wherein, the number of the end part and the plug-in structure is the same and is multiple, respectively, and each plug-in structure is arranged one by one corresponding to each end part.

6. The electrical connector of claim 1, wherein, the liquid conductive medium is a low-melting-point conductive medium.

7. An electrical connector, characterized in that, comprising: a plug-in connector; and the electrical connector of any one of claims 1 to 6.

8. An electrical connection method, characterized by, the method is applied to the electrical connector of claim 7, the method comprises: inserting the plug-in connector into the sealing interface of the first valve and abutting the second valve, so as to flow the liquid conductive medium to the second sub-cavity and be in contact with the plug-in connector.

9. The electrical connection method according to claim 8, wherein the first sub-cavity is filled with a low-melting-point conductive medium, before inserting the plug-in connector into the sealing interface of the first valve and abutting the second valve, the method further comprises: heating the first sub-cavity to convert the low-melting-point conductive medium into the liquid conductive medium.

10. The electrical connection method according to claim 9, wherein when the first valve is provided with a liquid injection port, the method further comprises: injecting the liquid conductive medium into the second sub-cavity through the liquid injection port.

11. The electrical connection method according to claim 10, wherein the method further comprises: heating the electrical connector to obtain the liquid conductive medium; pulling the plug-in connector away from the second valve, so that the second valve stops flowing the liquid conductive medium to the second sub-cavity; extracting the liquid conductive medium in the second sub-cavity through the liquid injection port; pulling the plug out of the sealed interface of the first valve.

12. An electrical connector apparatus, comprising: An electrical connector includes a housing having a first end and a second end, a first electrical terminal and a second electrical terminal, and a first electrical terminal and a second electrical terminal, respectively, disposed within the housing. A controller comprising a memory and a processor, the memory storing a computer program, the processor implementing the steps of the method of any one of claims 8 to 11 when executing the computer program.

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