Communication module, first connector, second connector, connector assembly and electronic device

Abstract

A communication module, a first connector, a second connector, a connector assembly and an electronic device. The electronic device comprises an optical module inserted into a device body. A housing of the optical module comprises a hollow chamber capable of accommodating a liquid cooling working medium, and two first connectors separately communicated with the hollow chamber; and interfaces of the first connectors face the insertion end of the optical module. On an insertion path, the optical module is movable relative to the device body from a first working position to a second working position. When the optical module is located at the first working position, the interfaces of the first connectors and interfaces of corresponding second connectors are mated and communicated with each other, and there is a spacing between an electrical interface and a corresponding mating electrical interface. When the optical module is moved to the second working position, the first connectors and the corresponding second connectors remain mated and communicated with each other, and the electrical interface is electrically connected to the corresponding mating electrical interface. During the insertion process of a liquid cooling module, liquid communication is achieved before electrical connection, such that heat generated by high-power-consumption electronic components can be taken away in time, thus improving the heat dissipation effect of the liquid cooling module.

Description

A communication module, a first connector, a second connector, a connector assembly, and an electronic device.

[0001] This application claims priority to Chinese Patent Application No. 202510053711.3, filed with the State Intellectual Property Office of China on January 13, 2025, entitled "A Communication Module, a First Connector, a Second Connector, a Connector Assembly and an Electronic Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of liquid-cooled electrical equipment technology, and in particular to a communication module, a first connector, a second connector, a connector assembly, and an electronic device. Background Technology

[0003] With the advancement of electrical equipment performance, liquid cooling technology has become widely used to ensure stable and reliable operation. Taking optical communication equipment as an example, equipment capacity is increasing daily, and the power density of optical modules is rising. Traditional air cooling can no longer meet the heat dissipation requirements of higher power consumption optical modules. Immersion liquid cooling technology can provide good heat dissipation capabilities, but it has drawbacks such as the need for airtight protection of the optical coupling path, high costs, poor maintainability, and the environmental impact of immersion liquids. Summary of the Invention

[0004] This application provides a communication module, a first connector, a second connector, a connector assembly, and an electronic device. Through structural optimization, the heat dissipation effect of the optical module can be effectively improved.

[0005] The first aspect of this application provides an electronic device, which includes a device body and an optical module inserted into the device body. The optical module includes a housing and a printed circuit board assembly located within the housing, with the insertion end of the printed circuit board assembly forming an electrical interface. The housing includes a hollow cavity for accommodating a liquid cooling medium and two first connectors respectively communicating with the hollow cavity, with the interfaces of the first connectors facing the insertion end of the optical module. The device body includes a second connector and a docking electrical interface, with the second connectors arranged in pairs and respectively communicating with a liquid supply branch and a liquid return branch of the device body. In the insertion path, the optical module can move relative to the device body from a first working position to a second working position. When in the first working position, the interfaces of the first connectors are mutually connected with the interfaces of the corresponding second connectors, and the electrical interface and the corresponding docking electrical interface are spaced apart and not connected. During the entire process of the optical module moving to the second working position, the first connectors and the corresponding second connectors remain mutually connected. When the optical module moves to the second working position, the electrical interface and the corresponding docking electrical interface are electrically connected. This configuration allows the optical module to first complete the liquid-cooled connector docking with the device body during the optical module insertion process, followed by the electrical connection. Once the optical module is in place, it achieves both electrical connection with the device body and docking of the liquid-cooled connector, forming a liquid-cooled working fluid circulation system for the optical module. In other words, it achieves both liquid path and electrical connection between the liquid-cooled optical module and the device body. Based on the electronic device architecture provided in this application embodiment, in the insertion path, when located at the first working position, the first connector of the optical module and the second connector of the device body are mutually connected. The optical module can move relative to the device body from the first working position to the second working position. When the optical module is at the first working position, the liquid path is connected, but the electrical connection is not. When the optical module is at the second working position, both the liquid path and the electrical connection are connected. In other words, during the insertion process of the optical module, liquid is supplied first, followed by electrical connection. In this way, the optical module can dissipate heat by circulating liquid cooling medium before being powered on. This can promptly remove the heat generated by high-power electronic components, achieving effective heat dissipation. It can avoid the risk of overheating and damage to electronic components caused by powering on the optical module first, thus providing a good technical guarantee for the overall reliability and stability of electronic equipment.

[0006] Based on the first aspect, this application also provides a first implementation of the first aspect: when in the first working position, the distance between the electrical interface and the corresponding mating electrical interface is a first dimension, and the travel distance for maintaining mutual mating and communication between the first connector and the second connector is a second dimension, the second dimension being not less than the first dimension. Thus, for the compatible first connector and second connector, the liquid path can be maintained within the second dimension in the insertion direction, that is, not less than the distance between the electrical interface of the optical module and the mating electrical interface of the device body when the optical module is in the first working position, thereby ensuring that liquid is supplied before power is supplied during the optical module insertion process.

[0007] Based on the first embodiment of the first aspect, this application also provides a second embodiment of the first aspect: the first connector includes a first outer shell, a first sealing element, a first sealing ring, and a first elastic element. The first outer shell has two openings communicating with the inner cavity, one of which communicates with the hollow cavity, and the other opening is the interface of the first connector; the first sealing element is built into the first outer shell, the first sealing ring is disposed on the first outer shell, and the first sealing element can be inserted into the central hole of the first sealing ring and radially pressed to seal; a first limiting part is provided on the first outer shell, and the first elastic element is pre-compressed and disposed between the first limiting part and the first sealing element. When the first sealing element is pressed and moves into the first outer shell, it can push the first elastic element to generate elastic deformation to form a restoring force acting on the first sealing element. The moving stroke of the first sealing element is not less than the first dimension; the second connector includes a second outer shell, a second sealing element, a second sealing ring, and a third... The device comprises a sealing ring, a second elastic element, and a fixed sealing element. The second housing includes two openings communicating with the inner cavity, one of which communicates with the main body of the device, and the other opening serves as the interface for the second connector. The second sealing element and the fixed sealing element are built into the second housing, with the second sealing element fitted onto the fixed sealing element. The second sealing element has an annular sealing portion. A second sealing ring is disposed on the second housing, and a third sealing ring is disposed on the annular sealing portion of the second sealing element. The second sealing element can be inserted into the central hole of the second sealing ring and radially pressed to seal. The sealing portion can be inserted into the central hole of the third sealing ring and radially pressed to seal. A second limiting portion is provided on the second housing. The second elastic element is pre-compressed and disposed between the second limiting portion and the second sealing element. When the second sealing element is pressed and moves into the second housing, it can push the second elastic element to generate elastic deformation, thereby forming a restoring force acting on the second sealing element. The moving stroke of the second sealing element is not less than a first dimension. During actual insertion, the first connector of the optical module is inserted into the second housing. Its first seal abuts against the end of the fixed seal on the second connector side, and the first seal is pushed a certain distance in the opposite direction of insertion by the fixed seal. The first elastic element is compressed, and the first seal disengages from the first sealing ring. Correspondingly, the first housing pushes the second seal of the second connector a certain distance in the insertion direction, and the second elastic element is compressed. The first and second housings are sealed by the second sealing ring, forming a channel between the housing and the first and fixed seals, at which point the fluid path begins to connect. The first connector continues to insert into the second housing, with a stroke of the second dimension, and the aforementioned channel remains connected. When the optical module is pulled out, the first elastic element on the first connector side rebounds and pushes the first seal back to its original position. The first seal inserts into the central hole of the first sealing ring and radially presses against it for sealing. The second elastic element on the second connector side rebounds and pushes the second seal back to its original position. The third sealing ring is fitted onto the sealing part of the fixed seal, and the annular sealing part of the second seal inserts into the central hole of the second sealing ring, radially pressing against both the second and third sealing rings for sealing. Thus, the first and second joints achieve self-sealing, featuring a simple and reliable structure.

[0008] Based on the second embodiment of the first aspect, this application also provides a third embodiment of the first aspect: the first housing on the interface side can be inserted into the second housing on the interface side to press against the second sealing member moving into the second housing, and the first housing can be inserted into the central hole of the second sealing ring and radially pressed to seal, while the fixing sealing member can press against the first sealing member moving into the first housing. With this configuration, in the mating and fitting state, the housing of the first connector is inserted into the housing of the second connector, which can reasonably control the radial dimension of the assembly state, reduce the overall assembly space occupied, and meet the trend design requirements of high-density product layout.

[0009] In practical applications, the printed circuit board assembly includes a circuit board, and the electrical interface can be gold fingers located at the insertion end of the circuit board; correspondingly, the main body of the device includes an electrical connector mounted on the single board, and the mating electrical interface is an electrical connector containing a metal spring.

[0010] For example, the electronic device can be an optical communication device such as a switch, router, or wavelength division multiplexing (WDM) device, or it can be a computing device such as a server.

[0011] A second aspect of this application provides a first connector, which includes a first housing, a first seal, a first sealing ring, and a first elastic member. The first housing has two openings communicating with an inner cavity. The first seal is built into the first housing, and the first sealing ring is disposed on the first housing. The first seal can be inserted into the central hole of the first sealing ring and radially pressed to seal. A first limiting portion is provided on the first housing. The first elastic member is pre-compressed and disposed between the first limiting portion and the first seal. When the first seal is pressed and moves into the first housing, it can push the first elastic member to generate elastic deformation, thereby forming a restoring force acting on the first seal. The moving stroke of the first seal is a second dimension. With this configuration, as a component of a liquid-cooled connector assembly, the first seal of the first connector can be pressed and moved in the opposite direction of the insertion direction, the first elastic member is compressed, the first housing pushes the second seal of the second connector to move in the insertion direction, and can move a second dimension in the insertion path to maintain mutual mating and communication. When the optical module is pulled out, the first elastic element rebounds and pushes the first sealing element to reset. The first sealing element is inserted into the middle hole of the first sealing ring and radially presses against the first sealing ring to seal, thus achieving self-sealing of the first connector. It has the characteristics of simple and reliable structure.

[0012] In practical applications, the first sealing ring can be embedded in the inner wall of the first housing.

[0013] For example, the first limiting part can be a first limiting block fixed on the first housing; for other examples, the first limiting part can also be integrally formed with the first housing.

[0014] Other examples include the first elastic element being an elastic component made of organic materials such as a spring, a metal spring sheet, or a rubber component.

[0015] Based on the second aspect, this application also provides a first implementation of the second aspect: the body of the first sealing member is provided with a plurality of protrusions, the protrusions being spaced apart from the inner wall of the first housing, the plurality of protrusions being spaced apart in the circumferential direction, and an opening being formed between two adjacent protrusions. Based on the spaced fit between the protrusions and the inner wall of the first housing, a guiding function is provided during the process of the first sealing member switching between a sealed state and an open state; at the same time, the liquid working fluid can flow through the opening formed between two adjacent protrusions, forming a liquid working fluid circulation that meets the functional requirements.

[0016] A third aspect of this application provides a second connector, which includes a second housing, a second seal, a second sealing ring, a third sealing ring, a second elastic member, and a fixed seal. The second housing includes two openings communicating with the inner cavity. The second seal and the fixed seal are built into the second housing, with the second seal fitted onto the fixed seal. The second seal has an annular sealing portion. The second sealing ring is disposed on the second housing, and the third sealing ring is disposed on the annular sealing portion of the second seal. The second seal can be inserted into the central hole of the second sealing ring and radially pressed to seal. The fixed seal can be inserted into the central hole of the third sealing ring and radially pressed to seal. A second limiting portion is provided on the second housing. The second elastic member is pre-compressed and disposed between the second limiting portion and the second seal. When the second seal is pressed and moves into the second housing, it can push the second elastic member to generate elastic deformation, thereby forming a restoring force acting on the second seal. The moving stroke of the second seal is a second dimension. With this configuration, as a component of the liquid-cooled connector assembly, the second seal of the second connector can be pressed and moved a certain distance in the insertion direction. The second elastic element is compressed, and the fixed seal can push the first seal of the first connector to move a certain distance in the opposite direction of the insertion direction. It can also move a second dimension along the insertion path to maintain mutual mating and communication. When the optical module is pulled out, the second elastic element rebounds and pushes the second seal to reset. The second seal inserts into the central hole of the second sealing ring and radially presses against the second sealing ring for sealing. It also radially presses against both the second and third sealing rings for sealing, achieving self-sealing of the second connector. This design features a simple and reliable structure.

[0017] In practical applications, the second sealing ring can be embedded in the inner wall of the second housing, and the third sealing ring can be embedded in the annular sealing part.

[0018] For example, the second limiting part can be a second limiting block fixed on the second housing; for other examples, the second limiting part can also be integrally formed with the second housing.

[0019] Other examples include the second elastic element being an elastic component made of organic materials such as a spring, a metal spring sheet, or a rubber component.

[0020] Based on the third aspect, this application also provides a first implementation of the third aspect: the second limiting block includes a limiting body, a fixing part, and a connecting part. The limiting body is sleeved outside the fixing part, and the limiting body and the fixing part are connected by multiple connecting parts. The limiting body is fixed to the second outer shell, and the fixing seal is fixed to the fixing part. The multiple connecting parts are spaced apart in the circumferential direction, and an opening is formed between adjacent connecting parts. With this configuration, the second limiting block can serve as an installation and fixing structure for the fixing seal. Exemplarily, the fixing seal and the fixing part can be snap-fitted or threaded, welded or riveted, or integrally formed. Simultaneously, the liquid working fluid can flow through the opening formed between adjacent connecting parts, thus meeting functional requirements.

[0021] A fourth aspect of this application provides a connector assembly including a first connector as described above and a second connector as described above; wherein the second connector side is movable towards a first housing by pressing against a first seal of the first connector, and the first connector side is movable towards a second housing by pressing against a second seal of the second connector, and the first housing and the second housing are radially sealed by a second sealing ring. In this way, a channel can be formed between the housings of the two mating connectors and the first and fixed seals, forming a reliable fluid communication relationship.

[0022] The fifth aspect of this application provides a communication module for plugging and unplugging into a device body. Specifically, the module includes a housing and a printed circuit board assembly within the housing. The insertion end of the printed circuit board assembly forms an electrical interface for electrical connection with a docking electrical interface on the device body side. The housing includes a hollow cavity for accommodating a liquid cooling medium and two connectors respectively communicating with the hollow cavity. The interfaces of the connectors face the insertion end of the communication module. The connectors can be either a first connector as described above, used for interoperability with a second connector on the device body side, or a second connector as described above, used for interoperability with the first connector on the device body side. With this configuration, when in the first working position along the insertion path, the first connector of the communication module is interoperable with the second connector of the device body. Furthermore, the communication module can be powered on only after the liquid cooling medium has circulated and achieved heat dissipation capabilities, effectively removing heat generated by high-power electronic components and mitigating the risk of overheating damage to electronic components, thus ensuring the operational reliability of the communication module.

[0023] For example, the communication module can be an optical module or an electrical module. Attached Figure Description

[0024] Figure 1 is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0025] Figure 2 is a schematic diagram of the insertion relationship of the optical module shown in Figure 1;

[0026] Figure 3 is an AA cross-sectional view of the optical module shown in Figure 2;

[0027] Figure 4 is an exploded view of the assembly of a device body provided in an embodiment of this application;

[0028] Figure 5 is a schematic diagram of the insertion state of the optical module located at the first working position according to an embodiment of this application;

[0029] Figure 6 is a cross-sectional view of BB in Figure 5;

[0030] Figure 7 is a schematic diagram of the insertion state of the optical module located at the second working position according to an embodiment of this application;

[0031] Figure 8 is a CC sectional view of Figure 7;

[0032] Figure 9 is a schematic diagram of the adaptation relationship between another electrical interface and a mating electrical interface provided in an embodiment of this application;

[0033] Figure 10 is a schematic diagram of another optical module provided in an embodiment of this application;

[0034] Figure 11 is a structural schematic diagram of a first connector provided in an embodiment of this application;

[0035] Figure 12 is a view of the first seal in section 9 from direction D;

[0036] Figure 13 is a structural schematic diagram of a second connector provided in an embodiment of this application;

[0037] Figure 14 is a view of the second limiting block in Figure 13 from direction E;

[0038] Figure 15 is a schematic diagram of the usage state of a connector assembly provided in an embodiment of this application. Detailed Implementation

[0039] This application provides an electronic device architecture scheme for a pluggable liquid-cooled module, which effectively improves the heat dissipation effect of the optical module while ensuring good reliability.

[0040] In communication links, cables can connect to optical modules assembled on the communication equipment side via connectors at their ends, and communication interconnection is achieved by inserting the optical modules into the equipment side. Optical modules are crucial components in optical communication, comprising electrical interfaces and optical interfaces. The electrical interface is used to connect with electrical connectors on the circuit board (board) of the communication equipment, while the optical interface (fiber optic interface) is used to connect to optical fibers. In different application scenarios, the optical module can convert electrical signals input from the electrical interface into optical signals for output, or vice versa. Alternatively, cables can also connect to the equipment side via electrical modules at their ends, achieving communication interconnection through electrical signal transmission.

[0041] In real-world scenarios, the demand for high-bandwidth, high-speed data transmission is gradually increasing, requiring optical modules to have excellent heat dissipation capabilities to ensure stable operation. Traditional air cooling can no longer meet the heat dissipation requirements of higher power consumption optical modules. Immersion liquid cooling technology can provide good heat dissipation capabilities, but it has problems such as higher packaging costs due to the need for hermetic protection of the optical coupling path, poor maintainability, and environmental impact of the immersion liquid.

[0042] Based on this, embodiments of this application provide an electronic device architecture for insertable optical modules. The electronic device includes a device body and a liquid-cooled optical module inserted into the device body. The optical module includes a housing and a printed circuit board assembly (PCBA). At least a portion of the PCBA is located within the housing, and the PCBA forms an electrical interface near the insertion side of the optical module. The housing of the optical module includes a hollow cavity for accommodating liquid cooling fluid, and two first connectors respectively communicating with the hollow cavity. The interfaces of the two first connectors are both oriented towards the insertion side. The device body includes a second connector and a docking electrical interface. The second connectors are arranged in pairs and are respectively connected to the liquid cooling circuit of the device body. One is connected to the liquid supply branch of the liquid cooling circuit, and the other is connected to the liquid return branch of the liquid cooling circuit. The interfaces of the second connectors and the docking electrical interface are both oriented towards the insertion side. The optical module is configured such that, along the insertion path, the optical module can move from a first working position to a second working position relative to the main body of the device. When it is in the first working position, the two first connectors of the optical module are mutually connected with the paired second connectors of the main body of the device, and the electrical interface of the optical module and the docking electrical interface of the main body of the device are spaced apart, that is, the liquid path is connected but the electrical path is not connected. When the optical module moves from the first working position to the second working position, the first connector of the optical module and the second connector of the main body of the device remain mutually connected, and when it is in the second working position, the electrical interface and the docking electrical interface are electrically connected, that is, both the liquid path and the electrical path are connected.

[0043] With this configuration, after the optical module is inserted, it can achieve electrical connection with the main body of the device, and simultaneously complete the docking of the liquid-cooled connector, forming a liquid-cooled working fluid cycle for the optical module. In other words, it achieves liquid-channel and electrical connectivity between the liquid-cooled optical module and the main body of the device. Here, "electrical connectivity" means that power can be supplied to the PCBA of the optical module, driving the electronic components arranged on the PCBA to operate. Based on the electronic device architecture provided in this application embodiment, in the insertion path, when in the first working position, the first connector of the optical module and the second connector of the main body are mutually connected. The optical module can move from the first working position to the second working position relative to the main body. When the optical module is in the first working position, the liquid-channel is connected, but the electrical connection is not. When the optical module is in the second working position, both the liquid-channel and electrical connection are connected. In other words, during the insertion process of the optical module, liquid is supplied before power is supplied. In this way, the optical module has heat dissipation capability based on the liquid-cooled working fluid cycle before power is supplied, which can promptly remove the heat generated by high-power electronic components, achieving effective heat dissipation. This avoids the risk of overheating damage caused by increased electronic component temperature, providing a good technical guarantee for the overall operational reliability and stability of the electronic device.

[0044] To better understand the technical solutions and effects of this application, without loss of generality, specific embodiments will be described in detail below with reference to the accompanying drawings. Please refer to Figures 1 and 2, where Figure 1 is a structural schematic diagram of an electronic device 100 provided in an embodiment of this application, and Figure 2 is a schematic diagram of the insertion relationship of the optical module 10 shown in Figure 1. For ease of description, the insertion and removal direction of the optical module 10 is shown by arrow X in the figure, and the side where the electrical interface of the optical module 10 is located is defined as the insertion end.

[0045] The electronic device 100 includes a device body 20 and an optical module 10. The optical module 10 is inserted into an optical cage 210 on the side of the device body 20, realizing the connection between the electrical interface of the optical module 10 and the single board of the device body 20. A cable (not shown in the figure) can be inserted into the optical port connector 110 of the optical module 10 through its end connector, realizing the connection between the optical fiber and the optical interface of the optical module 10. The figure illustrates the relative positional relationship between the optical module 10 and the device body 20 using one optical module 10 as an example to simplify the illustration.

[0046] Please also refer to Figure 3, which is an AA cross-sectional view of the optical module shown in Figure 2.

[0047] Referring to Figures 2 and 3, the optical module 10 includes a housing 130, an optical port connector 110, a PCBA 120, and a first connector 140. As shown in Figures 2 and 3, the optical port connector 110 and the PCBA 120 are located within the housing 130, which has a hollow cavity 130a for containing a liquid working fluid. Two first connectors 140 are connected to the input and output ports of the hollow cavity 130a, respectively. The first connector 140 at the input port is an input connector, and the first connector 140 at the output port is an output connector, so that the liquid cooling working fluid can flow within the hollow cavity 130a to achieve liquid cooling heat dissipation. In this embodiment, the PCBA 120 includes a circuit board 121 and a heat-generating device 122 disposed on the circuit board 121. Here, heat-generating device 122 refers to a device that generates heat during the operation of the optical module, such as, but not limited to, optical chips, lasers, power modules, optical digital signal processors (ODSPs), CDRs, drivers, transimpedance amplifiers (TIAs), or integrated coherent transceivers (ICTRs).

[0048] The optical connector 110 is connected to one end of the circuit board 121 to form an optical interface for connecting to a cable. The other end of the circuit board 121 has an electrical interface 1211, which is located at the insertion end of the optical module 10 and is used for plugging and unplugging adaptation with the electrical connector on the single board on the side of the device body 20. The interfaces of the two first connectors 140 are both oriented towards the insertion end of the optical module 10.

[0049] Please also refer to Figure 4, which is an exploded view of the assembly of a device body provided in an embodiment of this application.

[0050] As shown in Figure 4, the main body 20 of the device has a single board 220 housed within a housing 240. An electrical connector 230 with a mating electrical interface and an optical cage 210 are mounted on the single board 220. The insertion port of the optical cage 210 is exposed outside the housing 240. After the optical module 10 is inserted, the electrical interface at the end of the circuit board 121 interconnects with the mating electrical interface of the electrical connector 230. In a specific implementation, the electrical interface 1211 can be a gold finger structure on the circuit board 121 (not shown in the figure). Correspondingly, the mating electrical interface 2301 can be a metal spring of the electrical connector 230. The metal spring can press against the corresponding gold finger to achieve electrical connection. The specific details can be determined according to the overall product design requirements; this embodiment does not limit the specific implementation.

[0051] Meanwhile, the main body 20 includes a pair of second connectors 250, with the interfaces of the second connectors 250 facing the side where the optical module 10 is located. Of the two pairs of second connectors 250, the second connector 250 that is adapted to connect with the input connector on the optical module 10 side is a liquid outlet connector, and the second connector 250 that is adapted to connect with the output connector on the optical module 10 side is a liquid return connector. After they are connected, a liquid cooling working fluid circulation for the corresponding optical module can be constructed. Here, each second connector 250 can partially extend out of the outer shell 240 of the main body 20, or it can be completely built into the outer shell 240. That is, the first connector 140 on the optical module 10 side is inserted into the outer shell 240 through the corresponding opening 241 and adapted to connect with the corresponding second connector 250.

[0052] As shown in Figure 3, the housing 130 may include a first housing 131 and a second housing 132 connected together, which are joined to form a housing 130 capable of accommodating internal components. The circuit board 121 has one side facing the heating element 122 opposite to the first housing 131, and the other side facing the second housing 132. A hollow cavity 130a can be disposed within the first housing 131. Accordingly, the heat generated by the heating element 122 is transferred to the first housing 131 opposite to it and then exchanged with the liquid cooling medium within the hollow cavity 130a. Thus, the low-temperature liquid cooling medium can enter the hollow cavity 130a of the optical module 10 housing through the input port, exchange heat with the housing wall, and then the high-temperature liquid cooling medium flows out of the optical module housing through the output port.

[0053] Typically, the heat-generating device 122 on the circuit board 121 is positioned close to the first housing 131, resulting in a shorter heat transfer path and better heat exchange efficiency. To further enhance the heat exchange capability of the optical module, in other implementations, the second housing 132 of the housing 130 can also be provided with a hollow cavity (not shown in the figure) capable of accommodating liquid cooling medium, so that heat from the other side of the PCBA 120 can be exchanged to the liquid cooling medium in the hollow cavity of the second housing 132. In this way, the heat generated by the heat-generating device on the PCBA 120 can be exchanged to the liquid cooling medium in the hollow cavity 130a on the first housing 131 side, supplemented by simultaneous heat dissipation on the second housing 132 side, which can further improve the heat exchange efficiency. To reduce thermal resistance, the first housing 131 and the second housing 132 can be bonded to the PCBA 120 using a thermally conductive pad (not shown in the figure) or thermally conductive gel to quickly achieve heat conduction. The embodiments in this application are not limited.

[0054] In a specific implementation, the hollow cavity of the second shell 132 can communicate with the hollow cavity 130a of the first shell 131 to form a liquid cooling working fluid circulation through the first connector 140 on the side of the first shell 131. In this way, the cryogenic liquid cooling working fluid can simultaneously enter the second shell 132, ensuring the heat exchange efficiency of the second shell 132. The corresponding liquid circuit connection can also be achieved through the structure of the first shell 131 and the second shell 132 themselves; this embodiment of the application does not limit this.

[0055] In other possible implementations, the hollow cavity of the second housing 132 can also be connected to the corresponding second connector on the side of the main body 20 via an independently configured first connector 140 to form a liquid cooling working fluid circulation independent of the hollow cavity 130a on the side of the first housing 131 (not shown in the figure).

[0056] In this embodiment, the insertion and removal of the optical module 10 can realize the connection and disconnection of the circuit and the liquid circuit. After the optical cage 210 is inserted, the liquid circuit between the optical module 10 and the device body 20 is first connected, and then the circuit is connected. Please refer to Figures 5, 6, 7 and 8 together. Figure 5 is a schematic diagram of the insertion state of the optical module located in the first working position according to the embodiment of this application. Figure 6 is a BB cross-sectional view in Figure 5. Figure 7 is a schematic diagram of the insertion state of the optical module located in the second working position according to the embodiment of this application. Figure 8 is a CC cross-sectional view in Figure 7.

[0057] As shown in Figure 5, the optical module 10 is located at the first working position. Following the dashed arrow in the figure, the optical module 10 can move relative to the device body 20 along the insertion path to the second working position shown in Figure 7. Here, the "insertion path" refers to the movement path from the initial state of the optical module 10 being inserted into the optical cage 210 to its final insertion position. The first working position is a location in the middle of this movement path, and the second working position is the end position of this movement path. Of course, in possible embodiments, there may be a certain distance between the inserted optical module 10 and the optical cage 210 in the insertion direction. This application does not limit this.

[0058] As shown in Figures 5 and 6, when in the first working position, the first connector 140 of the optical module 10 and the second connector 250 of the device body 20 are mutually connected, and the electrical interface 1211 of the optical module 10 and the docking electrical interface 2301 of the device body 20 have a distance of the first dimension L1. That is to say, when the optical module 10 is inserted into the optical cage 210 to a certain distance to the first working position, the liquid path between it and the device body 20 is connected, but the electrical path is not connected. The liquid cooling working fluid circulation of the optical module 10 is completed, and it has the ability to remove heat from the optical module 10 side through the flowing liquid cooling working fluid.

[0059] As the optical module 10 continues to move a certain distance (L1) from the first working position to the second working position along the insertion path, as shown in Figures 7 and 8, the first connector 140 of the optical module 10 and the second connector 250 of the device body 20 remain mutually connected. Simultaneously, the electrical interface 1211 of the optical module 10 is inserted into the electrical connector 230 of the device body 20 and electrically connected to the mating electrical interface 2301 of the electrical connector 230. In other words, when the optical module 10 is inserted into the optical cage 210 to the second working position, both the liquid circuit and the electrical circuit between it and the device body 20 are connected, allowing the electronic device to operate normally in this state. Thus, when the temperature of high-power electronic components rises, the heat from the optical module 10 side can be carried away by the circulating liquid cooling medium, providing timely and effective heat dissipation and preventing overheating damage to the electronic components on the optical module 10 side.

[0060] It is understood that the aforementioned first dimension L1 is the minimum dimension required to ensure electrical connection between the electrical interface 1211 and the mating electrical interface 2301. For the mating gold finger structure and the metal spring of the electrical connector, the metal spring typically moves relative to the gold finger after touching the end position, and then adapts to press against the middle area of ​​the gold finger, meaning there is an adaptation stroke between them. In a specific implementation, when the optical module 10 continues to be inserted a certain distance (L1) from the first working position to the second working position, the optical module 10 can continue to move this adaptation stroke, allowing each metal spring to maintain a reliable electrical connection with the corresponding gold finger.

[0061] In the reverse operation of the optical module removal path, when the optical module 10 is pulled out a certain distance from the second working position, the electrical interface 1211 of the PCBA first disconnects from the electrical connector 230 of the device body 20, that is, the circuit between the two is broken. At this time, the first connector 140 on the optical module 10 side and the second connector 250 on the device body 20 side remain connected, and the liquid path between them is not broken. Until the first working position shown in Figure 6, this removal stage also has the ability to remove the heat from the optical module 10 side through the flowing liquid cooling medium. Next, the optical module 10 is pulled outwards, and the first connector 140 disconnects from the second connector 250 on the device body 20 side, realizing the removal operation of the optical module 10.

[0062] As shown in Figures 6 and 8, the compatible gold fingers and metal springs are arranged in two rows along the insertion / removal direction and are located on both sides of the circuit board 121. In other specific implementations, the compatible gold fingers and metal springs can be arranged in one row along the insertion / removal direction. Please refer to Figure 9, which is a schematic diagram of the adaptation relationship between another electrical interface and a mating electrical interface provided in an embodiment of this application.

[0063] As shown in Figure 9, the compatible electrical interface 1211 (metal finger) and the mating electrical interface (metal spring 2301) are arranged in a row along the insertion / removal direction and are located on both sides of the circuit board 121. Of course, in other possible implementations, they can also be arranged on one side of the circuit board 121. The specific arrangement can be determined according to the overall product design requirements, and this application embodiment does not limit this.

[0064] During the insertion of the optical module 10, both good insertion / removal guidance and mechanical stopping are required. For the guiding function, a guiding structure can be provided between the first connector 140 and the second connector 250. This guiding structure can be located on either side or in the middle; there is no limitation on its location. Alternatively, this guiding structure can be based on a traditional guiding adapter structure between the optical module and the optical cage, depending on the specific needs. For mechanical stopping, a traditional mechanical stopping structure between the optical module and the optical cage can be used to ensure proper insertion of the optical module 10, providing good adaptability.

[0065] As shown in Figure 3, the first connector 140 is located on the housing 130 away from the insertion end. In other specific implementations, the first connector 140 may also be located on the housing at the insertion end. Please refer to Figure 10, which is a schematic diagram of another optical module provided in an embodiment of this application. To clearly illustrate the differences and connections between this embodiment and the foregoing embodiments, the same functional components and structures are indicated by the same reference numerals in the figures.

[0066] As shown in Figure 10, the first connector 140 of the optical module 10 is located at the insertion end of the housing 130, that is, on the same side as the electrical interface. Correspondingly, the mating second connector (not shown in the figure) is disposed inside the main body of the device. The liquid-cooled optical module and the main body of the device can also achieve liquid circuit connection first and then electrical circuit connection to obtain a good heat dissipation effect. The specific implementation of other functional components can adopt the same method as the aforementioned implementation scheme, and will not be described in detail here.

[0067] In specific implementation, the first connector 140 and the second connector 250, after insertion, can be mated to achieve fluid circuit connection, and can maintain the fluid circuit connection within a second dimension (L2) in the insertion direction. That is, the movement stroke for maintaining mutual mating between the first connector 140 and the second connector 240 is the second dimension. It should be understood that this second dimension (L2) is greater than or equal to the first dimension L1, that is, not less than the distance between the electrical interface 1211 of the optical module 10 and the mating electrical interface 2301 of the device body 20 when the optical module 10 is in the first working position. At the same time, under normal non-mating conditions, both the first connector 140 and the second connector 250 are quick-connect connectors that can achieve self-sealing.

[0068] Please refer to Figures 11, 12, 13, 14, and 15 together. Figure 11 is a structural schematic diagram of a first connector provided in an embodiment of this application. Figure 12 is a D-direction view of the first sealing element in Figure 9. Figure 13 is a structural schematic diagram of a second connector provided in an embodiment of this application. Figure 14 is an E-direction view of the second limiting block in Figure 13. Figure 15 is a schematic diagram of the usage state of a connector assembly provided in an embodiment of this application. This figure shows a docking state schematic diagram of the first connector shown in Figure 11 and the second connector shown in Figure 13.

[0069] As shown in Figure 11, the first connector 140 includes a first sealing element 1401, a first sealing ring 1402, a first spring 1403, a first limiting block 1404, and a first outer shell 1405. The first outer shell 1405 includes two openings that communicate with the inner cavity of the outer shell and can be fixedly connected to the optical module housing as a basic component. One of the two openings is used to communicate with the hollow cavity on the side of the housing, and the other opening is an interface adapted to the second connector.

[0070] In this embodiment, the first sealing member 1401 is built into the first housing 1405, and the first sealing ring 1402 is disposed on the first housing 1405. The first sealing member 1401 can move relative to the first housing 1405 to switch between a sealed state and an open state. When the first sealing member 1401 is in the sealed state, it can be inserted into the central hole of the first sealing ring 1402 and radially pressed against the first sealing ring 1402 to seal. When the first sealing member 1401 moves into the first housing 1405 until it disengages from the first sealing ring 1402, it switches to the open state.

[0071] As shown in Figure 11, the first sealing ring 1402 is fixed to the inner wall of the first housing 1405 near the interface side, for example, but not limited to, it can be embedded in a sealing groove (not shown) opened on the first housing 1405. Based on the radial pressure of the first sealing member 1401, the first sealing ring 1402 and the first housing 1405 achieve sealing simultaneously. In other specific implementations, the first sealing ring 1402 is sealed to the end face of the first housing 1405, as long as the above-mentioned sealing function requirements can be met, and the embodiments of this application are not limited.

[0072] Accordingly, the first limiting block 1404 is fixed to the first outer shell 1405, and the first spring 1403 is pre-compressed and disposed between the first limiting block 1404 and the first sealing member 1401, so that the first sealing member 1401 is kept in a sealed state in the initial state (natural state when not properly mated with the second connector), that is, the first connector 140 is self-sealed. The first sealing member 1401 can be pressed inward to switch to the open state, further pushing the first spring 1403 to generate elastic deformation and store deformation energy to provide the reset force for the first sealing member 1401 to switch to the sealed state.

[0073] In a specific implementation, to improve the reliability of the state switching of the first sealing element 1401, as shown in Figures 11 and 12, a protrusion 14012 is further provided on the body 14011 of the first sealing element 1401. The protrusion 14012 extends toward the inner wall of the first housing 1405 and is spaced apart from the inner wall of the first housing 1405, providing a guiding function during the switching of the first sealing element 1401 between the sealed and open states. Furthermore, the number of protrusions 14012 can be multiple, spaced apart circumferentially, with an opening 14013 formed between adjacent protrusions 14012 to allow the passage of liquid working fluid. Further, the first spring 1403 can be disposed between the first limiting block 1404 and the protrusion 14012 of the first sealing element 1401 to maintain a reliable sealing state in the initial state of the first sealing element 1401.

[0074] In other specific implementations, the first spring 1403 can also be a first elastic element with other structural forms, such as a rubber element, or, for example, a metal sheet-like elastic element. The first limiting block 1404, as the limiting portion restricting the first elastic element, can also adopt other structural forms. For example, it can be a first limiting portion protruding inward from the body of the first housing 1405, and this first limiting portion can be integrally formed with the first housing. The specific implementation can be determined according to the overall product design, as long as the first limiting portion can be adapted to the first sealing member 1401 to restrict the function of the first elastic element. This application embodiment does not impose any limitations.

[0075] As shown in Figure 13, the second connector 250 includes a second sealing element 2501, a second sealing ring 2502, a third sealing ring 2503, a second spring 2504, a second limiting block 2505, a fixing sealing element 2506, and a second outer shell 2507. The second outer shell 2507 includes two openings that communicate with the inner cavity of the outer shell and can be fixedly connected to the main body of the equipment as a basic component. One of the two openings is used to communicate with the liquid cooling circuit (liquid supply branch and liquid return branch) on the side of the main body of the equipment, and the other opening is an interface adapted to the first connector.

[0076] In this embodiment, the second seal 2501 and the fixed seal 2506 are built into the second housing 2507. The second seal 2501 can move relative to the second housing 2507 and the fixed seal 2506, switching between a sealed state and an open state. The second seal 2501 is fitted onto the fixed seal 2506, and the second seal 2501 has an annular sealing portion 25011.

[0077] The second sealing ring 2502 is disposed on the second housing 2507, and the third sealing ring 2503 is disposed on the annular sealing portion 25011 of the second sealing member 2501. In the sealed state, the second sealing member 25011 can be inserted into the central hole of the second sealing ring 2502 and radially presses against the second sealing ring 2502 for sealing. The third sealing ring 2503, fixed on the annular sealing portion 25011, is fitted onto the sealing portion 25061 of the fixed sealing member 2506, and the sealing portion 25061 radially presses against the third sealing ring 2503 for sealing. Moving the second sealing member 2501 into the second housing 2507 switches to the open state and disengages it from the second sealing ring 2502.

[0078] As shown in Figure 13, the second sealing ring 2502 is fixed to the inner wall of the second housing 2507 near the interface side, for example, but not limited to, being able to be embedded in a sealing groove (not shown) opened on the second housing 2507. Based on the radial pressure of the annular sealing portion 25011, a seal is achieved synchronously by the second sealing ring 2502 and the second housing 2507. Correspondingly, the third sealing ring 2503 is fixed to the annular sealing portion 25011, for example, but not limited to, being able to be embedded in a sealing groove (not shown) opened on the annular sealing portion 25011. Based on the radial pressure of the annular sealing portion 25011, a seal is achieved synchronously by the third sealing ring 2503 and the sealing portion 25061 of the fixed sealing member 2506.

[0079] Accordingly, the second limiting block 2505 is fixed to the second outer shell 2507, and the second spring 2504 is pre-compressed and disposed between the second limiting block 2505 and the second seal 2501, so that the second seal 2501 remains in a sealed state in the initial state (natural state not properly mated with the first connector), that is, the second connector 250 achieves self-sealing. The second seal 2501 can be pressed inward to switch to the open state, further pushing the second spring 2504 to generate elastic deformation and store deformation energy to provide the reset force for the second seal 2501 to switch to the sealed state.

[0080] In a specific implementation, to optimize the assembly structure of the fixed seal 2506, as shown in Figures 13 and 14, the second limiting block 2505 further includes a limiting body 25051, a fixing part 25052, and a connecting part 25053. The limiting body 25051 is fitted over the fixing part 25052, and the two are connected by multiple connecting parts 25053. The limiting body 25051 is used to adapt to and limit the second spring 2504 with the second seal 2501. The end of the fixed seal 2506 away from the interface side can be fixed to the fixing part 25052, realizing the assembly and fixation of the fixed seal 2506. Correspondingly, the sealing part 25061 is located at the end of the fixed seal 2506 near the interface side. Here, the fixed seal 2506 and the fixing part 25052 can be snap-fitted, threaded, welded, riveted, or integrally formed. The specific method can be determined according to the product process requirements, and this embodiment does not limit the specific method.

[0081] Based on this, the number of connecting parts 25053 can be set to multiple and they are spaced apart in the circumferential direction. An opening 25054 is formed between two adjacent connecting parts 25053 to allow the liquid working fluid to pass through.

[0082] Similarly, in other specific implementations, the second spring 2504 can also be a first elastic element with other structural forms, such as a rubber element, or, for example, a metal spring sheet. The specific implementation can be determined based on the overall product design, as long as the first limiting portion can be adapted to the second sealing element 2501 to limit the function of the second elastic element. This application does not impose any limitations on this embodiment.

[0083] For the mating first connector 140 and second connector 250, the first housing 1405 on the interface side of the first connector 140 can be inserted into the second housing 2507 on the interface side of the second connector 250. As shown in Figure 15, the first housing 1405 can push the second sealing member 2501 into the second housing 2507 to the open state. At the same time, the sealing part 25061 of the fixed sealing member 2506 pushes the first sealing member 1401 into the first housing 1405 to the open state. In this state, the first housing 1405 is inserted into the central hole of the second sealing ring 2502 and radially presses against the first sealing ring 1402 to seal, thereby ensuring a seal at the mating position.

[0084] In a specific implementation, the first seal 1401 moves within the first housing 1405 for a distance (L2) that is greater than or equal to the first dimension L1. Similarly, the second seal 2501 moves within the second housing 2507 for a distance (L2) that is greater than or equal to the first dimension L1. Thus, the two can maintain fluid flow within the second dimension L2 length in the insertion direction. It should be understood that the second dimension (L2) is greater than or equal to the first dimension L1, that is, not less than the distance between the electrical interface 1211 and the docking electrical interface 2301 of the device body 20 when the optical module 10 is in the first working position.

[0085] The following is a brief explanation of the plug-in / plug-out adaptation principle of the first connector 140 and the second connector 250, with reference to Figure 15:

[0086] Insertion process: When inserting the optical module, as shown in Figure 15(a), the first connector 140 is inserted into the second housing 2507. The first seal 1401 abuts against the fixed seal 2506, and the first seal 1401 is pushed a certain distance in the opposite direction of the insertion direction by the fixed seal 2506. The first spring 1403 is compressed, and the first housing 1405 pushes the second seal 2501 to move in the insertion direction, compressing the second spring 2504. The first housing 1405 and the second housing 2507 are sealed by the second sealing ring 2502, and a channel P is formed between the housing and the first seal 1401 and the fixed seal 2506. At this time, the liquid circuit begins to connect.

[0087] Referring to Figure 15(b), after the first connector 140 continues to be inserted into the second housing 2507 second dimension L2, the channel P remains connected.

[0088] Pull-out process: When the optical module is pulled out, the first spring 1403 rebounds and pushes the first seal 1401 back to its original position. The first seal 1401 is inserted into the central hole of the first sealing ring 1402, and radially presses against the first sealing ring 1402 to seal. The second spring 2504 rebounds and pushes the second seal 2501 back to its original position. The third sealing ring 2503 is fitted onto the sealing part of the fixed seal 2506. The annular sealing part 25011 of the second seal 2501 is inserted into the central hole of the second sealing ring 2502, and radially presses against the second sealing ring 2502 and the third sealing ring 2503 to seal. Thus, the first connector 140 and the second connector 250 achieve self-sealing.

[0089] It should be noted that the functional structures of the first connector 140 and the second connector 250 can also be arranged in reverse on the optical module side and the device body side, which can also meet the above functional requirements. This application does not limit the embodiments.

[0090] Based on the aforementioned connector assembly, it can be applied to various electronic device scenarios employing liquid-cooled optical modules. For example, optical communication devices such as switches, routers, or wavelength division multiplexing (WDM) devices, or computing devices such as servers. It should be understood that the main body 20 and other functional components of the electronic device 100 are not the core inventive points of this application, and can be implemented by those skilled in the art based on existing technology; therefore, they will not be elaborated upon further herein.

[0091] In addition, the electronic device architecture provided in the embodiments of this application can also be applied to electronic products and devices with high heat dissipation requirements and pluggable requirements, such as, but not limited to, power equipment such as chargers and charging piles.

[0092] In addition to the aforementioned optical module, this application embodiment also provides an electrical module that can be plugged into and adapted to the main body of the device. The electrical module includes a housing and a printed circuit board assembly located within the housing. The insertion end of the printed circuit board assembly forms an electrical interface for electrical connection with the docking electrical interface on the main body of the device. The housing includes a hollow cavity for accommodating a liquid cooling medium and two connectors respectively communicating with the hollow cavity. The interfaces of the connectors are positioned facing the insertion end of the electrical module. The connectors are either the first connector as described above, used for interconnection and adaptation with the second connector on the main body of the device; or, the connectors are the second connector as described above, used for interconnection and adaptation with the first connector on the main body of the device. Similarly, based on the aforementioned plugging and connection sequence of the liquid interface and the electrical interface, the liquid-cooled electrical module and the main body can also achieve liquid circuit connection first and then electrical circuit connection to obtain a good heat dissipation effect. The specific implementation of other functional components can adopt the same approach as the aforementioned implementation scheme, and will not be elaborated here.

[0093] In specific implementations, the electrical module may or may not have an external power interface. Specifically, the electrical module can be a direct-attach cable (DAC) module, an active electrical cable (AEC) module, or an active copper cable (ACC) module. Other functional configurations of the corresponding electrical module can be implemented using existing technologies, and this application embodiment does not limit them.

[0094] Furthermore, the ordinal numbers "first" and "second," etc., used herein are only for describing the composition or structure of the same function in the technical solution. It is understood that the use of the aforementioned ordinal numbers does not constitute a limitation on the understanding of the technical solution for which protection is sought in this application.

[0095] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An electronic device, characterized in that, The electronic device includes a device body and an optical module inserted into the device body. The optical module includes a housing and a printed circuit board assembly located within the housing. The insertion end of the printed circuit board assembly forms an electrical interface. The housing includes a hollow cavity for accommodating liquid cooling fluid and two first connectors respectively communicating with the hollow cavity. The interfaces of the first connectors are positioned facing the insertion end of the optical module. The device body includes a second connector and a docking electrical interface. The second connectors are arranged in pairs and are respectively connected to the liquid supply branch and the liquid return branch of the device body. On the insertion path, the optical module can move relative to the device body from a first working position to a second working position. When it is in the first working position, the interfaces of the first connectors are mutually connected with the interfaces of the corresponding second connectors, and the electrical interface is spaced from the corresponding docking electrical interface. When the optical module moves to the second working position, the first connectors remain mutually connected with the corresponding second connectors, and the electrical interface is electrically connected to the corresponding docking electrical interface.

2. The electronic device according to claim 1, characterized in that, When in the first working position, the distance between the electrical interface and the corresponding docking electrical interface is a first dimension, and the travel distance between the first connector and the second connector to maintain mutual mating and communication is a second dimension, the second dimension being not less than the first dimension.

3. The electronic device according to any one of claims 2, characterized in that, The first connector includes a first outer shell, a first sealing element, a first sealing ring, and a first elastic element. The first outer shell has two openings that communicate with the inner cavity, one of which communicates with the hollow cavity, and the other opening is the interface of the first connector. The first sealing element is built into the first outer shell, and the first sealing ring is disposed on the first outer shell. The first sealing element can be inserted into the central hole of the first sealing ring and radially pressed to seal. A first limiting part is provided on the first outer shell. The first elastic element is pre-compressed and disposed between the first limiting part and the first sealing element. When the first sealing element is pressed and moves into the first outer shell, it can push the first elastic element to generate elastic deformation to form a restoring force acting on the first sealing element. The moving stroke of the first sealing element is not less than the first dimension. The second connector includes a second housing, a second seal, a second sealing ring, a third sealing ring, a second elastic element, and a fixing seal. The second housing includes two openings that communicate with the inner cavity. One of the openings communicates with the main body of the device, and the other opening is the interface of the second connector. The second sealing element and the fixed sealing element are built into the second housing. The second sealing element is fitted onto the fixed sealing element. The second sealing element has an annular sealing portion. The second sealing ring is disposed on the second housing. The third sealing ring is disposed on the annular sealing portion of the second sealing element. The second sealing element can be inserted into the central hole of the second sealing ring and radially press against it for sealing. The sealing portion can be inserted into the central hole of the third sealing ring and radially press against it for sealing. The second housing is provided with a second limiting portion. The second elastic element is pre-compressed and disposed between the second limiting portion and the second sealing element. When the second sealing element is pressed and moves into the second housing, it can push the second elastic element to generate elastic deformation, thereby forming a restoring force acting on the second sealing element. The moving stroke of the second sealing element is not less than the first dimension.

4. The electronic device according to claim 3, characterized in that, The first housing on the interface side can be inserted into the second housing on the interface side to press against the second seal and move into the second housing. The first housing can be inserted into the central hole of the second sealing ring and radially press against it for sealing. The fixed seal can press against the first seal and move into the first housing.

5. The electronic device according to any one of claims 1 to 4, characterized in that, The printed circuit board assembly includes a circuit board, the electrical interface is a gold finger located at the insertion end of the circuit board, the device body includes an electrical connector disposed on the single board, and the mating electrical interface is the electrical connector.

6. The electronic device according to any one of claims 1 to 5, characterized in that, The electronic device is an optical communication device or a computing device.

7. A first connector, characterized in that, The first connector includes a first outer shell, a first sealing element, a first sealing ring, and a first elastic element. The first outer shell has two openings communicating with the inner cavity. The first sealing element is built into the first outer shell. The first sealing ring is disposed on the first outer shell. The first sealing element can be inserted into the central hole of the first sealing ring and radially presses against it for sealing. A first limiting part is provided on the first outer shell. The first elastic element is pre-compressed and disposed between the first limiting part and the first sealing element. When the first sealing element is pressed and moves into the first outer shell, it can push the first elastic element to generate elastic deformation, thereby forming a restoring force acting on the first sealing element.

8. The first connector according to claim 7, characterized in that, The first sealing ring is embedded in the inner wall surface of the first housing.

9. The first connector according to claim 7 or 8, characterized in that, The first limiting part is a first limiting block fixed on the first outer shell.

10. The first connector according to any one of claims 7 to 9, characterized in that, The first elastic element is a spring or a rubber component.

11. The first connector according to any one of claims 7 to 10, characterized in that, The first sealing element has a plurality of protrusions on its body. The protrusions are spaced apart from the inner wall of the first housing. The plurality of protrusions are spaced apart in the circumferential direction, and an opening is formed between two adjacent protrusions.

12. A second connector, characterized in that, The second connector includes a second outer shell, a second sealing element, a second sealing ring, a third sealing ring, a second elastic element, and a fixed sealing element. The second outer shell includes two openings communicating with the inner cavity. The second sealing element and the fixed sealing element are built into the second outer shell. The second sealing element is fitted onto the fixed sealing element. The second sealing element has an annular sealing portion. The second sealing ring is disposed on the second outer shell. The third sealing ring is disposed on the annular sealing portion of the second sealing element. The second sealing element can be inserted into the central hole of the second sealing ring and radially press against it for sealing. The sealing portion can be inserted into the central hole of the third sealing ring and radially press against it for sealing. A second limiting portion is provided on the second outer shell. The second elastic element is pre-compressed and disposed between the second limiting portion and the second sealing element. When the second sealing element is pressed and moves into the second outer shell, it can push the second elastic element to generate elastic deformation, thereby forming a restoring force acting on the second sealing element.

13. The second connector according to claim 12, characterized in that, The second sealing ring is fitted into the inner wall surface of the second housing, and the third sealing ring is fitted into the annular sealing portion.

14. The second connector according to claim 12 or 13, characterized in that, The second limiting part is a second limiting block fixed on the second outer shell.

15. The second connector according to claim 14, characterized in that, The second limiting block includes a limiting body, a fixing part, and a connecting part. The limiting body is sleeved on the outside of the fixing part. The limiting body and the fixing part are connected by a plurality of connecting parts. The limiting body is fixed to the second outer shell. The fixing seal is fixed to the fixing part. The plurality of connecting parts are spaced apart in the circumferential direction, and an opening is formed between two adjacent connecting parts.

16. The second connector according to any one of claims 12 to 15, characterized in that, The second elastic element is a spring or a rubber component.

17. A connector assembly, characterized in that, The connector assembly includes a first connector according to any one of claims 7 to 11, and a second connector according to any one of claims 12 to 16; the second connector side is movable into the first housing by pressing against the first seal of the first connector, the first connector side is movable into the second housing by pressing against the second seal of the second connector, and the first housing and the second housing can be sealed by radial pressing against each other by a second sealing ring.

18. A communication module for plugging and unplugging into a device body, characterized in that, The communication module includes a housing and a printed circuit board assembly located in the housing, the insertion end of the printed circuit board assembly forming an electrical interface; the housing includes a hollow cavity for accommodating a liquid cooling working fluid, and two connectors respectively communicating with the hollow cavity, the interfaces of the connectors being arranged facing the insertion end of the communication module; The connector is a first connector as described in any one of claims 7 to 11; or, the connector is a second connector as described in any one of claims 12 to 16.

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