Communication device

Abstract

The utility model provides a communication device. The communication device comprises a female seat; the communication module comprises a first communication interface, a second communication interface and a function part capable of setting different network types, and the first communication interface and the second communication interface are electrically connected to the function part; the first communication interface can be detachably connected with the female seat, and the second communication interface is used for being detachably connected with the first communication interface of another communication module; the plurality of communication modules are sequentially connected, the first communication interface of the first communication module is connected to the female seat, and the second communication interface of the first communication module is connected to the first communication interface of another adjacent communication module. The communication device provided by the utility model can be freely combined and spliced to support the external equipment to carry out communication requirements of a plurality of network types.

Description

Technical Field

[0001] This application relates to the technical field of communication devices, and particularly to a communication device. Background Art

[0002] With the development of the new energy industry, new energy energy storage devices play an important role in the energy system. As society's demand for energy increases, the usage of new energy energy storage devices is also increasing. Due to the improvement of the intelligence level of new energy energy storage devices, there is a need to access the network. Currently, network systems are very complex, including base station signals, Wi-Fi networks, 433 networks, LoRa, etc. Therefore, in order to further improve the intelligence level, new energy energy storage devices have higher requirements for the convenience of external communication modules and the types of supported network systems.

[0003] Existing external communication modules have a single network system and only support a single communication network, which is not convenient to use when the device needs to communicate using multiple network systems. Summary of the Utility Model

[0004] In view of the above, it is necessary to provide a communication device that can be freely combined and spliced to support the communication requirements of external devices for multiple network systems.

[0005] This application provides a communication device, including: a female socket; a plurality of communication modules, each communication module includes a first communication interface, a second communication interface, and a functional part that can be set with different network systems. Both the first communication interface and the second communication interface are electrically connected to the functional part; the first communication interface can be detachably connected to the female socket, and the second communication interface is used to detachably connect to the first communication interface of another communication module; the plurality of communication modules are connected in sequence, wherein the first communication interface of the communication module at the first position is connected to the female socket, and the second communication interface of the communication module at the first position is connected to the first communication interface of another adjacent communication module.

[0006] In some embodiments, the communication device further includes an external module provided with an external interface; the second communication interface is adapted to the external interface and is detachably connected to the external interface.

[0007] In some embodiments, the female socket includes a wiring female head and a fixed base, and the wiring female head is provided on the fixed base and is circuit-connected to the functional part through the first communication interface.

[0008] In some embodiments, the communication device further includes a transfer cover, one end of the transfer cover is inserted into the fixed base, and the other end of the transfer cover is inserted into the communication module at the first position.

[0009] In some embodiments, the communication module further includes a housing. One end of the housing is configured as a plug, and the other end of the housing is configured as a slot. The slot is inserted with an adapter cover, and the plug is inserted with the slot of another adjacent communication module.

[0010] In some embodiments, one end of the adapter cover inserted with the first communication module is provided with a first clamping block, the plug is provided with a second clamping block, and the inner wall of the slot is provided with a clamping groove; when the adapter cover is inserted with the first communication module, the first clamping block is clamped and sleeved with the clamping groove of the first communication module; when the plug of a communication module is inserted with the slot of another communication module, the clamping block of the communication module is clamped and sleeved with the clamping groove of the other communication module.

[0011] In some embodiments, a first sealing ring is provided between the adapter cover and the first communication module, and the first sealing ring is used to seal the housing of the first communication module.

[0012] In some embodiments, a second sealing ring is provided between a communication module and another adjacent communication module, and the second sealing ring is used to seal the housing of the other adjacent communication module.

[0013] In some embodiments, the fixed base is provided with a third sealing ring.

[0014] In some embodiments, the external module includes a housing, a screw sleeve, a rubber ring, and a rubber plug. One end of the housing is sleeved on the communication module, and a fourth sealing ring is provided between the end sleeved on the communication module and the communication module. The other end of the housing is a clamping jaw. The rubber plug is arranged inside the rubber ring, and the rubber ring is arranged inside the screw sleeve and is detachably connected to the clamping jaw through the screw sleeve.

[0015] The present application has the following technical effects:

[0016] 1. In the communication device of the present application, by splicing communication modules with different network systems, the communication requirements of external devices for multiple network systems are supported.

[0017] 2. In the communication device of the present application, an external device can be inserted with a communication module through the female socket of the communication module. The communication modules are connected through the housing, and the communication module and the external module are connected through the housing. The housing is provided with clamping blocks and clamping grooves, and quick insertion can be achieved between the clamping blocks and the clamping grooves. Therefore, it has the characteristics of quick installation, quick removal, quick replacement, and lossless docking.

[0018] 3. In the communication device of the present application, a first sealing ring is provided between the adapter cover and the communication module, a second sealing ring is provided between the communication module and another adjacent communication module, the fixed base is provided with a third sealing ring, and a fourth sealing ring is provided between the external module and the communication module. Therefore, the sealing performance of the communication device can be improved. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of the communication device according to an embodiment of the present application.

[0020] Figure 2 It is an exploded view of the structure of the communication device according to an embodiment of the present application.

[0021] Description of main component symbols:

[0022] 1. Communication device; 11. Female socket; 12. Adapter cover; 13. Communication module; 14. External module; 111. Wiring female head; 112. Fixed base; 113. Fixing member; 114. Third sealing ring; 131. First communication interface; 132. Second communication interface; 133. Functional part; 134. Housing; 1341. Plug; 1342. Slot; 121. First sealing ring; 135. Second sealing ring; 1343. Button; 1344. Indicator light; 141. Outer shell; 142. Sleeve; 143. Rubber ring; 144. Rubber plug; 145. Fourth sealing ring.

[0023] The following specific embodiments will further illustrate the present application in conjunction with the above-mentioned drawings. Specific embodiments

[0024] In the description of the embodiments of the present application, words such as "exemplary", "or", "for example", etc. are used to represent examples, illustrations or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Exactly speaking, using words such as "exemplary", "or", "for example", etc. aims to present relevant concepts in a specific manner.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. It should be understood that unless otherwise stated in the present application, " / " means "or". For example, A / B can mean A or B. The "and / or" in the present application is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone, these three situations. "At least one" means one or more. "Multiple" means two or more than two. For example, at least one of a, b or c can mean: a, b, c, a and b, a and c, b and c, a, b and c, these seven situations.

[0026] It should be further noted that the terms "first" and "second" in the description, claims and drawings of this application are used to distinguish similar objects, rather than to describe a specific order or sequence.

[0027] With the development of the new energy industry, new energy energy storage devices (such as photovoltaic devices) play an important role in the energy system. As society's requirements for energy are getting higher and higher, the usage of new energy energy storage devices is also increasing. Due to the improvement of the intelligence level, new energy energy storage devices have a need to access the network. Currently, network systems are very complex, including base station signals, Wi-Fi networks, 433 networks, LoRa, etc. Therefore, in order to further improve the intelligence level, new energy energy storage devices have higher and higher requirements for the convenience of external communication modules and the types of network systems supported.

[0028] Existing external communication modules have a single network system. When the device needs to communicate using multiple network systems, the original communication module needs to be removed and a new one needs to be replaced, which is inconvenient to operate, and only supports a single communication network, making it inconvenient to use.

[0029] Another existing external communication module integrates multiple network systems. However, since the device does not need to communicate using all network systems, when configuring different network communications, settings need to be made in the software, increasing the complexity of software design.

[0030] In addition, most new energy energy storage devices are arranged in open places such as outdoors, and they also require no obstruction during operation. Therefore, they are often exposed to wind and rain, which has a greater impact on the normal operation of the internal circuits.

[0031] Therefore, this application provides a communication device. Some embodiments will be described below with reference to the drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0032] Please refer to Figure 1, the communication device 1 of the present application may include: a female socket 11, a transfer cover 12, a communication module 13, and an external module 14. A plurality of communication modules 13 can be connected in sequence. Specifically, the number of communication modules 13 can be 1, 2, 3, 4, or more, and they can be freely combined and spliced according to the communication requirements of the first external device. For example, when the first external device needs to communicate using a certain network mode, the communication module 13 can be 1 and the communication module 13 is equipped with the corresponding network mode to support the first external device for communication; when the first external device needs to communicate using 2 network modes, the communication module 13 can be 2 and the communication module 13 is equipped with the corresponding two network modes to support the first external device for communication. The 2 communication modules 13 are detachably connected and, after being connected in sequence, are then connected to the first external device through the female socket 11. The communication module 13 connected to the female socket 11 is the communication module 13a at the first position, and one or more communication modules 13 connected to the communication module 13a at the first position are communication modules 13b.

[0033] In the present application, the female socket 11 can be used for electrical connection with the first external device. The first external device can be a new energy energy storage device that needs to communicate with other device terminals using network modes such as base station signals, wifi networks, 433 networks, lora, etc., such as a photovoltaic power generation device, a photovoltaic inverter, or a wind power generation device, etc.

[0034] In some embodiments, please refer to Figure 2 , the female socket 11 includes a wiring female head 111, a fixed base 112, and a plurality of fixing members 113. The wiring female head 111 can be arranged on the fixed base 112 and is used for circuit connection with the first external device or the communication module 13, that is, the first external device can be circuit-connected to the communication module 13 through the wiring female head 111. Specifically, the fixed base 112 can have a through hole, one end of the wiring female head 111 can pass through the through hole and be inserted into the communication interface of the first external device, and the other end of the wiring female head 111 is inserted into the communication module 13. Thus, the first external device can be circuit-connected to the communication module 13 through the wiring female head 111.

[0035] In some embodiments, the wiring female head 111 can be a USB (Universal Serial Bus) female head. In other embodiments, the wiring female head 111 can also be other interfaces for communication connection, such as a 232 serial port, a 485 serial port, an Ethernet, a GPIB, wireless, and optical fiber, etc.

[0036] In some embodiments, the fixed base 112 is also called a plastic female base, and the fixed base 112 can be fixed to the first external device through the fixing members 113.

[0037] In some embodiments, the fixed base 112 is provided with a third sealing ring 114. Specifically, the third sealing ring 114 is disposed between the fixed base 112 and the first external device, and the third sealing ring 114 can be used to seal the fixed base 112 or the first external device. The radial cross-sectional shape of the third sealing ring 114 can be the same as the radial cross-sectional shape of the fixed base 112, and a through hole for the connection terminal 111 to pass through can be reserved in the middle of the sealing ring. This can enhance the sealing performance between the female seat 11 and the first external device and improve the rainproof function of the female seat 11 and the first external device.

[0038] In some embodiments, the middle part of the fixed base 112 can have a flange, which can be used to play a role of blocking and limiting when the fixed base 112 is connected to the first external device or when the fixed base 112 is connected to the adapter cover 12, and at the same time has a certain rainproof function. In addition, the flange can also facilitate the fixing member 113 to fix it to the first external device.

[0039] In some embodiments, the fixed base 112 and the adapter cover 12 can be sleeved. When the fixed base 112 and the adapter cover 12 are sleeved, the connection terminal 111 can pass through the adapter cover 12 to facilitate circuit connection with the communication module 13.

[0040] In some embodiments, the fixing member 113 can be a screw. The number of screws can be 2, 3, 4 or more. In other embodiments, the fixing member 113 can also be a fixture with a clamping and fixing function, such as a clip or a buckle.

[0041] In some embodiments, a plurality of fixing members 113 can be evenly distributed on the convex part of the fixed base 112 and fix the fixed base 112 to the first external device by cooperating with the convex part.

[0042] In the present application, as described above, the communication device 1 includes an adapter cover 12. Please refer to Figure 2 , one end of the adapter cover 12 can be used for plugging into the fixed base 112, and the other end of the adapter cover 12 can be used for plugging into the communication module 13a at the first position.

[0043] In some embodiments, the shape of one end of the adapter cover 12 can be adapted to the fixed base 112, and thus can be used for plugging into the fixed base 112.

[0044] In some embodiments, the part of the adapter cover 12 connected to the fixed base 112 can have a clamping block, which can be used to be clamped on the fixed base 112 when the adapter cover 12 is connected to the fixed base 112, thereby improving the stability of the plugging. At the same time, by unlocking the clamping block, the adapter cover 12 can be quickly detached from the fixed base 112.

[0045] In some embodiments, the other end of the adapter cover 12 may be shaped to fit the shape of the communication module 13, such as to fit the shape of the housing 134 of the communication module 13, and thus can be used to plug into the communication module 13a at the first position.

[0046] In some embodiments, the part of the other end of the adapter cover 12 connected to the communication module 13 may also have a clamping block, which can be used to engage with the communication module 13 when the adapter cover 12 is connected to the communication module 13, thereby improving the stability of the plug-in connection. At the same time, by unlocking the clamping block, the communication module 13 can be quickly detached from the adapter cover 12.

[0047] In some embodiments, the middle part of the adapter cover 12 may have a convex part, which can be used to play a role of blocking and limiting when the two ends of the adapter cover 12 are connected to the fixed base 112 or the communication module 13.

[0048] In the present application, as described above, the communication device 1 includes a communication module 13. Please refer to Figure 2 , the communication module 13 may include a first communication interface 131, a second communication interface 132, and a functional part 133.

[0049] In some embodiments, the first communication interface 131 may be a USB (Universal Serial Bus) male connector. In other embodiments, the first communication interface 131 may also be other connection terminals for communication connection, such as a serial port 232, a serial port 485, an Ethernet, a GPIB, a wireless, or an optical fiber connection terminal.

[0050] In some embodiments, the second communication interface 132 may be a USB (Universal Serial Bus) female connector. In other embodiments, the second communication interface 132 may also be other interfaces for communication connection, such as a serial port 232, a serial port 485, an Ethernet, a GPIB, a wireless, or an optical fiber connection port.

[0051] In some embodiments, the functional part 133 may be the functional circuit of the communication module 13. The functional part 133 can be set with different network modes. For example, the functional part 133 can be set to use network modes such as base station signals, wifi networks, 433 networks, or loras.

[0052] In some embodiments, both the first communication interface 131 and the second communication interface 132 are electrically connected to the functional part 133.

[0053] The first communication interface 131 can be detachably connected to the female socket 11, and the second communication interface 132 is used to be detachably connected to the first communication interface 131 of another communication module 13. In some embodiments, the female connector head 111 is circuit-connected to the functional unit 133 through the first communication interface 131. Thus, the first external device can communicate through the female socket 11 and the first communication interface 131 using the network mode carried by the functional unit 133 of the communication module 13.

[0054] In some embodiments, please refer to Figure 1 or Figure 2 , the first communication interface 131 of the first communication module 13a is connected to the female socket 11, and the second communication interface 132 of the first communication module 13a is connected to the first communication interface 131 of another adjacent communication module 13b, to allow the first external device to communicate through multiple network modes of multiple functional units 133. That is, the first communication interface 131 of another communication module 13 can be connected to the second communication interface 132 of the previous communication module 13, whereby the first external device can communicate using different network modes carried by the functional units 133 of the two communication modules 13. It should be noted that Figure 2 for the convenience of drawing, therefore Figure 2 in [the figure], the first communication interface 131, the second communication interface 132 and the functional unit 133 of another adjacent communication module 13b are not shown, however, it can be understood that the structures of the first communication module 13a at the first place and another adjacent communication module 13b can be completely the same.

[0055] In some embodiments, please refer to Figure 2 , the communication module 13 may further include a housing 134. The housing 134 can be used to accommodate the first communication interface 131, the second communication interface 132 and the functional unit 133. The housing 134 is provided with a hollow channel, that is, both ends are through holes, whereby it is convenient for the first communication interface 131 to be connected to the female socket 11 or the second communication interface 132 of another communication module 13.

[0056] In some embodiments, one end of the housing 134 is provided as a plug 1341, and the other end of the housing 134 is provided as a slot 1342. The slot 1342 can be used to plug into the adapter cover 12, and the plug 1341 can be used to plug into the slot 1342 of another adjacent communication module 13b.

[0057] In some embodiments, the outer shape of the plug 1341 is smaller than the outer shape of the slot 1342, whereby it is convenient to plug into the slot 1342 of another adjacent communication module 13b.

[0058] In some embodiments, one end of the adapter cover 12 that is plugged into the first communication module 13a is provided with a first clamping block, the plug 1341 of the communication module 13 is provided with a second clamping block, and a clamping groove is provided on the inner wall of the slot 1342 of the communication module 13. When the adapter cover 12 is plugged into the first communication module 13a, the first clamping block is clamped and sleeved with the clamping groove of the first communication module 13a; when the plug 1341 of the communication module 13 is plugged into the slot 1342 of another communication module 13, the clamping block of the communication module 13 is clamped and sleeved with the clamping groove of another communication module 13. Thereby, the stability of the plugging can be improved, and at the same time, the first clamping block or the second clamping block can be quickly unlocked through the clamping groove, so that the communication module 13 can be quickly disassembled and assembled on the female seat 11, or another communication module 13 can be quickly disassembled and assembled on the communication module 13.

[0059] In some embodiments, a first sealing ring 121 is provided between the adapter cover 12 and the first communication module 13a. The first sealing ring 121 is used to seal the housing 134 of the first communication module 13a. The radial cross-sectional shape of the first sealing ring 121 can be the same as the radial cross-sectional shape of the housing 134 of the communication module 13, and a through hole for the first communication interface 131 to pass through can be reserved in the middle of the sealing ring. Thereby, the sealing performance between the adapter cover 12 and the communication module 13 can be enhanced, and the rain-proof function of the adapter cover 12 and the communication module 13 can be improved.

[0060] In some embodiments, a second sealing ring 135 is provided between the communication module 13 and another adjacent communication module 13b. The second sealing ring 135 is used to seal the housing 134 of another adjacent communication module 13b. The radial cross-sectional shape of the second sealing ring 135 can be the same as the radial cross-sectional shape of the housing 134 of the communication module 13, and a through hole for the first communication interface 131 to pass through can be reserved in the middle of the sealing ring. Thereby, the sealing performance between the communication module 13 and another adjacent communication module 13b can be enhanced, and the rain-proof function of the communication module 13 and another adjacent communication module 13b can be improved.

[0061] In some embodiments, a plurality of buttons 1343 are provided on the outer surface of the housing 134 of the communication module 13. The plurality of buttons 1343 can be electrically connected to the functional part 133. Thereby, it is convenient for the operator to set the parameters or network mode of the functional part 133 through the buttons 1343.

[0062] In some embodiments, an indicator light 1344 is provided on the outer surface of the housing 134 of the communication module 13. The indicator light 1344 can be electrically connected to the functional part 133. The color of the indicator light 1344 can be various. Thereby, it is convenient for the operator to judge whether the communication module 13 is working normally through the indicator light 1344.

[0063] In the present application, as described above, the communication device 1 includes an external module 14. In some embodiments, the external module 14 is provided with an external interface, and the external module 14 is used to connect to a second external device.

[0064] In some embodiments, the second communication interface 132 can be adapted to the external interface and is used to detachably connect to the external interface.

[0065] In some embodiments, the external interface can be a USB (Universal Serial Bus) male connector. In other embodiments, the external interface can also be other interfaces for communication connection, such as serial port 232, serial port 485, Ethernet, GPIB, wireless, and fiber optic connectors, etc.

[0066] In some embodiments, please refer to Figure 2 , the external module 14 includes a housing 141, a bushing 142, a rubber ring 143, and a rubber plug 144. The front end of the housing 141 is used to sleeved on the communication module 13.

[0067] In some embodiments, the shape of the part of the housing 141 sleeved on the communication module 13 can be the same as the shape of the slot 1342 of the housing 134 of the communication module 13. This can facilitate the plug 1341 sleeved on the communication module 13.

[0068] In some embodiments, a fourth sealing ring 145 is provided between the front end of the housing 141 and the communication module 13. The radial cross-sectional shape of the fourth sealing ring 145 can be the same as the radial cross-sectional shape of the housing 141, and a through hole for the external interface to pass through can be reserved in the middle of the sealing ring. This can enhance the sealing performance between the communication module 13 and the external module 14 and improve the rainproof function of the communication module 13 and the external module 14.

[0069] In some embodiments, the rear end of the housing 141 is a clamping jaw, and the clamping jaw is an elastic chuck structure.

[0070] In some embodiments, the rubber plug 144 is arranged inside the rubber ring 143, the rubber ring 143 is arranged inside the bushing 142 and is detachably connected to the clamping jaw through the bushing 142. When the external module 14 needs to be connected to the second external device by wire, the rubber plug 144 can be removed, the external wire can be connected to the external interface, and by tightening the bushing 142, the clamping jaw can be tightened, and then the connected wire can be sealed by the rubber ring 143, improving the rainproof function of the external module 14. When the external module 14 does not need to be connected to the second external device, by tightening the bushing 142, the clamping jaw can be tightened, and then the rubber plug 144 and the rubber ring 143 can be sealed, improving the rainproof function of the external module 14.

[0071] In summary, in the communication device 1 of the present application, by splicing communication modules 13 with different network systems, the communication requirements of external devices for multiple network systems are supported. In addition, the external device can be plugged into the communication module 13 through the female socket 11, the communication module 13 is connected to the communication module 13 through the housing 134, the communication module 13 is connected to the external module 14 through the housing 134, and the housing 134 is provided with a clamping block and a clamping groove, and quick plugging can be achieved between the clamping block and the clamping groove, thus having the characteristics of quick installation, quick removal, quick replacement and lossless docking. In addition, a first sealing ring 121 is arranged between the adapter cover 12 and the communication module 13, a second sealing ring 135 is arranged between the communication module 13 and another adjacent communication module 13b, the fixed base 112 of the female socket 11 is provided with a third sealing ring 114, and a fourth sealing ring 145 is arranged between the external module 14 and the communication module 13, thereby improving the sealing performance of the communication device 1.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and not to limit them. Although the present application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A communication device, characterized in that: include: Mother seat; A plurality of communication modules, each of which comprises a first communication interface, a second communication interface and a functional part capable of setting different network formats, wherein the first communication interface and the second communication interface are both electrically connected to the functional part; the first communication interface can be detachably connected to the female socket, and the second communication interface is used to be detachably connected to the first communication interface of another communication module; The plurality of communication modules are connected in sequence, wherein the first communication interface of the communication module located at the first position is connected to the female socket, and the second communication interface of the communication module located at the first position is connected to the first communication interface of another adjacent communication module.

2. The communication device according to claim 1, characterized in that The communication device also includes an external connection module provided with an external connection interface; The second communication interface is adapted to the external interface, and the second communication interface is detachably connected to the external interface.

3. The communication device according to claim 1, characterized in that The female socket includes a wiring female head and a fixed base. The wiring female head is arranged on the fixed base and is connected to the functional part circuit through the first communication interface.

4. The communication device according to claim 3, characterized in that: The communication device further comprises an adapter cover, one end of which is plugged into the fixed base, and the other end of which is plugged into the communication module located in the first position.

5. The communication device according to claim 4, characterized in that: The communication module further comprises a shell, one end of which is configured as a plug, and the other end of which is configured as a slot, the slot being plugged into the adapter cover, and the plug being plugged into the slot of another adjacent communication module.

6. The communication device according to claim 5, characterized in that: The end of the adapter cover that is plugged into the communication module located in the first position is provided with a first card block, the plug is provided with a second card block, and the inner wall of the slot is provided with a card slot; When the adapter cover is plugged into the communication module located at the first position, the first card block is engaged with the card slot of the communication module located at the first position; When the plug of the communication module is plugged into the slot of another communication module, the card block of the communication module is engaged and sleeved with the card slot of another communication module.

7. The communication device according to claim 5, characterized in that: A first sealing ring is arranged between the adapter cover and the communication module located at the first position, and the first sealing ring is used to seal the housing of the communication module located at the first position.

8. The communication device according to claim 5, characterized in that: A second sealing ring is provided between the communication module and another adjacent communication module, and the second sealing ring is used to seal the housing of the other adjacent communication module.

9. The communication device according to claim 3, characterized in that: The fixed base is provided with a third sealing ring.

10. The communication device according to claim 2, characterized in that: The external module includes a shell, a screw sleeve, a rubber ring and a rubber plug. One end of the shell is sleeved on the communication module, and a fourth sealing ring is arranged between the end sleeved on the communication module and the communication module. The other end of the shell is a clamping claw. The rubber plug is arranged in the rubber ring. The rubber ring is arranged in the screw sleeve and is detachably connected to the clamping claw through the screw sleeve.

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