WO2022094915A1

WO2022094915A1 - Watertight sealed electronic-circuit apparatus and related electronic device and mobile platform

Info

Publication number: WO2022094915A1
Application number: PCT/CN2020/127055
Authority: WO
Inventors: 张文康; 孟祥�; 张攀; 杨飞虎; 张皓渊
Original assignee: 深圳市大疆创新科技有限公司
Priority date: 2020-11-06
Filing date: 2020-11-06
Publication date: 2022-05-12

Abstract

The present disclosure relates to a watertight sealed electronic-circuit apparatus, the watertight sealed electronic-circuit apparatus comprising: a base; and at least two control modules, said at least two control modules being sealingly arranged on the first side of said base; said base comprising an internal interface and an external interface, said internal interface being used for electrically connecting to said at least two control modules to achieve an electrical connection between any two or more of the at least two control modules, said external interface being used for electrical connection to an external device. In the present disclosure, by means of the modularized design of the control system, each control module of the control system is independent with respect to the others, and each control module is connected to the base in a sealed manner, thus independent sealing of each control module is achieved by means of the base. The signal communication and power supply connections between the control modules are achieved by means of the base, eliminating the need for excessive cables for connections, thus saving material and space.

Description

Waterproof and sealed electronic circuit devices and related electronic equipment and mobile platforms

technical field

The present disclosure relates to the field of electronic products, and more particularly, to a waterproof and sealed electronic device that can be used in harsh working environments, as well as electronic equipment and mobile platforms including the waterproof and sealed electronic device.

Background technique

At present, drones have been used in all walks of life. However, for the application of industry-level drones, especially unmanned agricultural plant protection, they may be contaminated with a large number of corrosive pesticide water mist and fertilizer dust particles during work. The protection capabilities of existing agricultural plant protection drones cannot stop pesticides and fertilizers. The corrosion and aging of the electronic system have put forward IP68 waterproof and dustproof requirements for this industry drone.

The existing UAV dustproof and waterproof method mainly adopts the shell structure for waterproof and dustproof, and all avionics system circuits are placed in a sealed cavity. This makes the mold design of the product and various sealing plugs the main points of the design. Usually, the joints of the upper and lower shells of the drone are designed as concave and convex matching structures, and a waterproof rubber ring is set between the upper and lower shells, and then locked to achieve the sealing effect.

External port connectors are usually in the form of SR joint structure encapsulation. Tighten the screws through each joint, and the waterproof rubber ring deforms and expands to seal the gap between the connector and the shell. Each joint is directly connected to the inner cavity, and if the seal of one joint fails, the seal of the entire module will fail. In addition, each connector needs to occupy a lot of space for locking screws in the waterproof SR connector, resulting in a heavy structure and requiring disassembly and assembly of screws for assembly and maintenance, which is time-consuming and labor-intensive.

SUMMARY OF THE INVENTION

The present disclosure aims to solve at least one of the technical problems existing in the prior art. A first aspect of the present disclosure provides a watertight sealed electronic circuit device comprising: a base; and at least two control modules sealingly disposed on a first side of the base ; wherein, the base includes an internal interface and an external interface, the internal interface is used for electrical connection with the at least two control modules, so as to realize the connection between any two or more of the at least two control modules the electrical connection, the external interface is used for electrical connection with external equipment.

A second aspect of the present disclosure relates to a mobile platform comprising any of the watertight sealed electronic circuit arrangements as described above.

A third aspect of the present disclosure also relates to an electronic device comprising any of the above-mentioned waterproof sealed electronic circuit devices.

The waterproof and sealed electronic circuit device according to the present disclosure realizes each control module through the base by modularizing the control system so that each control module of the control system is relatively independent, and sealingly connecting each control module to the base. Therefore, the overall waterproof sealing can be achieved through only one sealing process, which reduces the probability of sealing failure, and can also improve the efficiency of disassembly, maintenance and installation of the control module. In addition, the signal communication and power supply connection between the various control modules are realized through the base, so that there is no need to use too many cables for connection, thereby saving materials and space, and at the same time improving the connection efficiency of each control module.

Description of drawings

FIG. 1 shows a perspective view of a watertight sealed electronic circuit device according to the present disclosure from a first side.

FIG. 2 shows a perspective view of a watertight sealed electronic circuit device according to the present disclosure from a second side opposite the first side.

3 shows an exploded perspective view of a watertight sealed electronic circuit device according to the present disclosure.

4 shows a perspective view of a control module of a watertight sealed electronic circuit device according to the present disclosure.

5 shows an exploded perspective view of a control module of a watertight sealed electronic circuit device according to the present disclosure.

Description of reference numbers:

10: waterproof sealed electronic circuit device; 12: base; 121: screw hole; 122: internal interface; 1222: internal interface of flight control; 1224: internal interface of radio frequency; 1226: internal interface of power supply; 124: external interface; 1242: power interface ;126: Base housing; 1262: Bottom plate; 1263: Interface opening; 1264: Bottom plate flange; 128: Base circuit board; ;14: Control module; 1402: Main circuit board; 1404: First shell; 1405: Heat dissipation structure; 1406: Second shell; 1407: Shell opening; 1408: Screw; 142: flight control module; 144: radio frequency module; 146: power control module; 148: guide hole; 16: sealing gasket.

Detailed ways

Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present disclosure, but should not be construed as a limitation of the present disclosure.

In the description of the present disclosure, it should be understood that the terms "first" and "second" are only used for description purposes, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, features defined as "first", "second" may expressly or implicitly include one or more of said features. In the description of the present disclosure, "plurality" means two or more, unless expressly and specifically defined otherwise.

In the description of the present disclosure, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be mechanical connection, electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction of two elements relation. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific situations.

The following disclosure provides many different embodiments or examples for implementing different structures of the present disclosure. In order to simplify the disclosure of the present disclosure, the components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the present disclosure. Furthermore, the present disclosure may repeat reference numerals and/or reference letters in different instances for the purpose of simplicity and clarity and not in itself indicative of a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

The present disclosure relates to a waterproof and sealed electronic circuit device, which can be applied to industry-level UAV systems for firefighting, agriculture, exploration, rescue, reconnaissance, surveying and mapping, etc. On consumer-grade UAV systems operating in dusty areas. The above application scenarios all require a high level of waterproof and dustproof, all-weather environmental adaptability, and the ability to withstand the contamination and corrosion of common organic compounds such as pesticides and fertilizers, and require on-site maintenance and replacement.

The present disclosure mainly designs a modular system scheme based on substrate interconnection applied to UAVs, and utilizes the related potting, structural sealing, connector waterproofing, inter-board interconnection and intra-board outlet, and overall shock absorption. technology. It solves the problem of poor reliability that has long plagued the application of UAVs in heavy rain environment, high dust environment, and high salt spray chemical corrosion environment. At the same time, it meets the stringent requirements for lightweight and high heat dissipation efficiency of the UAV system, and also improves the maintainability of the UAV on-site replacement and maintenance. In addition, the modular design scheme based on the substrate provides the basis for the smooth iterative upgrade of the product in the future, making the platform-based expansion application possible.

As shown in FIGS. 1 and 2 , a first perspective view from the upper side and a second perspective view from the lower side are shown of a waterproof sealed electronic circuit device 10 according to the present disclosure, the waterproof sealed electronic circuit device 10 . 10 includes a base 12 and at least two control modules 14 sealingly disposed on a first side of the base 12 . Here, the first side surface of the base 12 can be defined as the upper side, and correspondingly, the second side surface opposite to the first side surface can be defined as the lower side. The waterproof and sealed electronic circuit device 10 according to the present disclosure can be applied to the avionics system of the UAV, and the avionics system of the UAV can be divided into at least two control modules 14. In the embodiment shown in FIG. 1, at least The two control modules 14 may include, for example, a flight control module 142 , a radio frequency module 144 and a power control module 146 . Of course, the above-mentioned three modules can also be integrated into two modules, or the above-mentioned modules can be further subdivided, or other modules other than the above-mentioned three modules can also be included, for example, a load module can also be included. Each of the at least two control modules 14 can be independently sealed on the first side of the base 12, thereby enabling the at least two control modules 14 to be spatially isolated from each other so that one of the control modules In the event that the seal of 14 fails, the seals of other control modules 14 are not affected.

In order to realize the electrical connection between any two or more modules in the at least two control modules 14 and the electrical connection between the control module 14 and external devices, the electrical connection here refers to the electrical connection between different control modules 14 Signal connections and/or power connections between the various control modules 14 or to a power source, the base 12 of the watertight sealed electronic circuit assembly 10 may include an internal interface 122 (shown in FIG. 3 ) and an external interface 124 (shown in FIG. 2 ) shown), wherein the internal interface 122 is used for electrical connection with at least two control modules 14, and the external interface 124 is used for electrical connection with external devices. In the embodiment shown in FIGS. 2 and 3 , the internal interface 122 is provided on a first side of the base 12 and the external interface 124 is provided on a second side of the base 12 opposite the first side. Here, the external interface 124 may also be disposed on the first side surface, and it is only necessary to reserve a certain space for the external interface 124 on the first side surface during the design process. The at least two control modules 14 may be electrically connected to the base 12 through the internal interface 122, and any two or more of the at least two control modules 14 electrically connected to the base 12 may be electrically connected through circuitry in the base 12, such as, The flight control module 142 can be electrically connected to the base 12 through its corresponding flight control internal interface 1222, and the flight control module 142 is electrically connected to the radio frequency module 144 and/or the power control module 146 through the internal circuit in the base 12, so as to realize the flight control Signal connections and/or power connections between module 142 and radio frequency module 144 and/or power control module 146 . The external interface 124 is used for electrical connection with external devices, for example, the external interface 124 can electrically connect the flight control module 142 to the ESC of the drone, so as to control the ESC.

Further, the structure of the base portion 12 of the waterproof sealed electronic circuit device 10 according to the present disclosure will be described below. The base 12 is used to provide support for the at least two control modules 14 and is capable of providing a watertight seal for the interior cavities of the at least two control modules 14, while providing a watertight seal for the base 12 itself. The base 12 may be configured to include a base housing 126 , a base circuit board 128 positioned within the base housing 126 , and a waterproof seal 130 sealingly positioning the base circuit board 128 within the base housing 126 . The waterproof sealing layer 130 is formed by filling the potting glue, and the waterproof sealing layer 130 jointly seals the base circuit board 128 and at least part of the external interface 124 , that is, the potting glue covers the entire surface of the base circuit board 128 and also covers the base The connection of the circuit board 128 to the external interface 124 thereby enables the base circuit board 128 and at least part of the external interface 124 to be sealed together to provide a good sealing condition. Since the waterproof sealing layer 130 is formed by potting the base circuit board 128 and the base housing 126 with transparent potting glue, the waterproof sealing layer 130 is in a transparent state, so there are no specific lines in the embodiment shown in FIG. 2 . shape. The base housing 126 may be provided to be made of metal, thereby ensuring the support strength of the base 12 to prevent deformation thereof, for example, the base housing 126 may be made of aluminum. The base housing 126 may be configured to include a backplane 1262 and a backplane flange 1264 extending from the second side of the base 12 . A space for accommodating the potting glue is formed on the second side, so that the second side of the base 12 can be sealed.

In order to enable electrical connection between each of the at least two control modules 14 and one or more other control modules, each control module 14 is electrically connected to the base circuit board 128 through a corresponding internal interface 122 , eg, in an example such as In the embodiment shown in FIGS. 1-3 , the flight control module 142 is electrically connected to the base circuit board 128 through the flight control internal interface 1222 , the radio frequency module 144 is electrically connected to the base circuit board 128 through the radio frequency internal interface 1224 , and the power control module 146 is electrically connected to the base circuit board 128 through the radio frequency internal interface 1224 . The power supply internal interface 1226 is electrically connected to the base circuit board 128 . The flight control module 142 , the radio frequency module 144 and the power control module 146 electrically connected to the base circuit board 128 can realize electrical connection between any two or three modules, so that the base circuit board 128 can realize the connection between the various modules. Electrical connection, thus eliminating the need for connecting cables between the various modules. Further, in order to enable the base circuit board 128 disposed in the base housing 126 to be electrically connected to the at least two modules 14 through the internal interface 122, an interface opening 1263 is provided in the bottom plate 1262 of the base housing 126, and the internal interface 122 It can extend through the interface opening 1263 for interfacing with the various control modules 14 . Here, one interface opening 1263 is provided for each internal interface 122. For example, in the embodiment according to the present disclosure, three interface openings 1263 may be provided in the bottom plate 1262, corresponding to the flight control internal interface 1222 and the radio frequency internal interface respectively. 1224 and the power supply internal interface 1226, the flight control internal interface 1222, the radio frequency internal interface 1224 and the power supply internal interface 1226 respectively extend from the base circuit board 128 through the interface opening 1263 toward the side opposite to the base circuit board 128 of the base plate 1262. In order to strengthen the material strength in the vicinity of the interface opening 1263 , a flange protruding toward the base circuit board 128 or toward the control module 14 is provided on the peripheral edge of the interface opening 1263 . By disposing the flange on the peripheral edge of the interface opening 1263 , not only the structural strength at the interface opening 1263 can be improved, but also the heat dissipation performance of the base housing 126 can be enhanced.

Further, in order to improve the fixing stability of the base circuit board 128 in the base case 126, a flexible filling material is arranged between the upper surface of the base circuit board 128 and the lower surface of the bottom plate 1262 of the base case 126, Filling material is arranged in the gap between the board 128 and the base case 126 , so that the base circuit board 128 can be more firmly fixed in the base case 126 . In addition, a waterproof dividing portion (not shown in the figure) may also be provided between the base circuit boards 128 corresponding to each of the at least two control modules 14 adjacent to each other, and the waterproof dividing portion can be used for phase separation. The adjacent control modules 14 provide space isolation, so that after the waterproof seal of one of the control modules 14 is damaged and fails, the waterproof seal of the other adjacent control modules 14 will not be affected. In order to maintain a certain pressure difference between the inner cavity of the waterproof and sealed electronic circuit device 10 and the external space, a waterproof and ventilating valve (not shown in the figure) can be provided on the base shell 126, which can ensure the base shell 126. The airtightness of the inner space of the body 126 can also ensure a pressure difference within a certain range between the inner space of the base case 126 and the outer space.

In the watertight sealed electronic circuit device 10 according to the present disclosure, the external interface 124 provided on the second side of the base 12 may include an interface for each control module 14 to an external device, such as a power interface 1242 that may include a power control module 146 , which is used to connect the power supply to the power supply control module 146 . Here, all the external interfaces 124 are provided as waterproof connectors, whereby the sealing performance of the base circuit board 128 can be ensured. The connection position of the external interface 124 and the base circuit board 128 can be set to a height lower than the potting height of the potting glue. For example, the external interface 124 can be welded to the second side of the base circuit board 128 by welding. When the glue is potted on the second side of the base circuit board 128 , it can completely cover the welding seam between the external interface 124 and the base circuit board 128 . That is, the height of the bottom plate flange 1264 of the base housing 126 is greater than the thickness of the base circuit board 128, and also greater than the height of the welding seam between the external interface 124 and the base circuit board 128, thereby ensuring the application of the base circuit The potting glue on the surface of the board 128 can cover the welding seam between the external interface 124 and the base circuit board 128, and at the same time, it will not overflow from the edge of the base case 126 in a liquid state.

The structure of the base circuit board 128 will be described below. The base circuit board 128 may include a first circuit layer close to the first side and a second circuit layer close to the second side, that is, the base circuit board 128 may be provided in a multi-layer structure , circuits with different functions are arranged in each layer, and only two layers are provided for illustration here. It should be understood that the base circuit board 128 may be arranged in a single-layer or three-layer structure or more. The circuits in the first circuit layer can realize the electrical connection between any two or more modules in the at least two control modules 14, such as the signal connection between the flight control module 142 and the radio frequency module 144, the second circuit The layer may implement the power connection between the power control module 146 and the flight control module 142 and/or the radio frequency module 144 for supplying power to the flight control module 142 and/or the radio frequency module 144 . Here, the first circuit layer can be set as a low-voltage signal layer, and a circuit for circulating low-voltage signals is arranged in the first circuit layer. Correspondingly, the second circuit layer can be set as a high-voltage signal layer, in the second circuit layer The circuit arranged in the middle is a circuit that circulates high-voltage signals, such as the power circuit of each module, and the circuit between the power control module 146 and the power interface 1242 is arranged in the second circuit layer. Thereby, electromagnetic interference between the low-voltage signal and the high-voltage signal can be reduced as much as possible. Further, a ground layer can also be provided between the first circuit layer and the second circuit layer, and the electromagnetic interference between the first circuit layer and the second circuit layer can be better isolated by the ground layer, thereby making the first circuit layer The signal or current in the circuit layer and the second circuit layer is more stable. In addition, in order to improve the current capacity in the second circuit layer, a current bar can be set in the second circuit layer, for example, in the circuit where the flight control module 142 is connected to the ESC of the drone, due to the flight A large current is required in the process, thereby increasing the current load of the circuit connected to the external interface in the second circuit layer. Here, by adding a current bar in the second circuit layer, the conduction of the second circuit layer can be improved. flow capability. Of course, the first circuit layer and the second circuit layer can also be set as a mixed-current layer, that is, both low-voltage signals and high-voltage signals can be passed through them, and one circuit layer can also be set.

The at least two control modules 14 of the watertight sealed electronic circuit device 10 according to the present disclosure will be described below with reference to FIGS. 4 and 5 . Each of the control modules 14 may include a main circuit board 1402, a first housing 1404 for receiving the main circuit board 1402, and a second housing 1406 for enclosing the main circuit board 1402 within the first housing 1404, wherein, The control module 14 is sealingly disposed on the base 12 by a first housing 1404 . The second housing 1406 may be secured to the first housing 1404 by screws 1408, thereby enabling the main circuit board 1402 to be secured within the cavity formed by the first housing 1404 and the second housing 1406 to form a separate control module 14 so as to For the overall installation and removal of the control module 14 . Here, both the first casing 1404 and the second casing 1406 are made of metal materials, which can not only provide high stability, but also facilitate the heat dissipation of the control module 14 . In the embodiments shown in FIGS. 4 and 5 , the three control modules of the flight control module 142 , the radio frequency module 144 and the power control module 146 all have the above structures. A sealing structure is provided between each control module 14 and the base 12 . The sealing structure includes a gasket 16 disposed between the control modules 14 and the first side surface of the base 12. Each control module 14 can be fixed on the base 12 by a fixing mechanism. Here, each control module 14 can be set by Screws 1410 on the periphery and screw holes 121 provided in the base 12 are fixed on the base 12, and the gasket 16 provided between the control module 14 and the base 12 can provide a sealing effect for the connection between the two. The sealing structure may further include a first gasket accommodating groove 1412 provided on the side edge of the control module 14 in contact with the base 12 , and/or a second seal provided on the base 12 at a position corresponding to the control module 14 . Pad receiving slot (not shown). The first sealing gasket accommodating groove 1412 and/or the second sealing gasket accommodating groove can limit the sealing gasket 16 between the control module 14 and the base 12 to prevent the sealing gasket 16 from occurring between the control module 14 and the base 12 shift. In addition, the electrical connection between the first shell 1404 of the control module 14, the base shell 126 and the ground layer of the base circuit board 128 can also be realized by fixing the screws 1410 and the screw holes 121 of the control module 14 and the base 12, so that the three A Faraday electromagnetic cage is formed therebetween, thereby preventing electromagnetic interference between the inside and the outside of the watertightly sealed electronic circuit device 10 .

As shown in FIG. 5 , the second housing 1406 is provided with a housing opening 1407 through which the internal interface 122 provided on the base 12 can pass through, that is to say, the housing opening 1407 enables the main circuit board provided on the control module 14 The interface on 1402 is exposed for interfacing with the internal interface 122. In addition, in order to facilitate heat dissipation of the main circuit board 1402 , at least one protruding portion 1409 may also be provided on the second housing 1406 . Of course, the corresponding protrusions 1409 may not be provided on the second housing 1406 . A heat dissipation structure 1405 may be provided on the side of the first housing 1404 that is away from the base 12, and the heat dissipation structure 1405 may include heat dissipation fins. The direction of drainage is the same, which can ensure the best heat dissipation efficiency and the lightest heat dissipation weight. The heat dissipation structure 1405 is beneficial to dissipate the heat emitted by the main circuit board 1402, so as to keep the temperature of the control module 14 within a certain range.

In order to facilitate the accurate installation of the assembled control module 14 on the base 12, a pre-positioning mechanism is provided between the control module 14 and the base 12, and the pre-positioning mechanism may include a guide pin 132 provided on the base 12 and a guide pin 132 provided on the base 12. The guide holes 148 in the control module 14 are shown in FIGS. 3 and 4 . Of course, the guide pins can also be arranged on the control module 14, while the guide holes can be arranged on the base plate, or other alignment and positioning mechanisms, such as teeth and grooves, can also be used. Convenient installation and pre-positioning of the control module 14 with the base 12 can be accomplished by a pre-positioning mechanism, and then the control module 14 is fastened to the base 12 via screws 1410 .

When installing the waterproof and sealed electronic circuit device 10 according to the present disclosure to the drone, it is also necessary to reduce the vibration of the electronic circuit device 10 during the flight of the drone as much as possible. A shock absorbing member 134 is provided at the position where the base 12 of the electronic circuit device 10 is mounted to the drone, such as a shock absorbing pad, as shown in FIG. 2 . Further, a mounting boss 136 can also be provided on the base 12, and the damping member 134 can be set on the mounting boss 136, so that when the waterproof and sealed electronic circuit device 10 is mounted on the drone, the mounting boss 134 can be installed on the mounting boss 136. The shock absorbing component 134 between the stage 136 and the UAV slows down the vibration transmitted by the UAV to the waterproof and sealed electronic circuit device 10 , so as to ensure the stability of the operation of the waterproof and sealed electronic circuit device 10 .

The waterproof and sealed electronic circuit device 10 according to the present disclosure adopts the solution that the modules are connected by a substrate, and there is only one waterproof sealing point between the module and the substrate, thus greatly reducing the probability of waterproof failure. The modules are interconnected through the base plate, avoiding the use of a large number of cables, and solving the contradiction between modularization and reducing interconnection cables. The external connectors are all arranged on the other side of the substrate, and waterproof connectors are used, thereby ensuring the waterproof sealing performance on the substrate side. The technical solution of the present disclosure can also ensure complete cavity isolation between the connector and the module, between the connector and the connector, and between the module and the module, and avoid the failure of the entire circuit device caused by the waterproof failure of a single connector or a single module. . In addition, the waterproof connector is small in size, which can reduce the volume of the substrate, thereby reducing the overall weight and cost. Since the first side of the base 12 is made of metal, such as aluminum, and the other side is treated with potting glue, the density of the potting glue is only 1/3 of that of aluminum, so the weight of the base 12 can be reduced. In addition, since at least two control modules are directly fixed on the base by screws, when a specific control module fails, only the failed control module needs to be disassembled, and other normal modules do not need to be disassembled and replaced, thereby saving man-hours. By performing potting glue treatment on the second side of the base, the connection strength of the external interface can be enhanced and the reliability thereof can be improved.

The present disclosure also relates to a mobile platform comprising the waterproof sealed electronic circuit device 10 as described above, the mobile platform may include but not limited to objects movable on land, water or air, for example, the mobile platform may It is unmanned aerial vehicle, unmanned ship, unmanned vehicle, robot, etc. Optionally, the mobile platform in this embodiment may be an unmanned aerial vehicle.

In addition, the present disclosure also relates to an electronic device, which includes the above-mentioned waterproof and sealed electronic circuit device 10 . The electronic device can be applied to application scenarios with harsh environments, and has good sealing performance and corrosion resistance.

The above descriptions are only preferred embodiments of the present disclosure, and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included within the protection scope of the present disclosure.

Claims

A waterproof and sealed electronic circuit device is characterized in that, comprising:

base;

at least two control modules sealingly disposed on the first side of the base;

Wherein, the base includes an internal interface and an external interface, and the internal interface is used for electrical connection with the at least two control modules, so as to realize the communication between any two or more of the at least two control modules. Electrical connection, the external interface is used for electrical connection with external equipment.
The waterproof and sealed electronic circuit device according to claim 1, wherein:

The external interface of the base is provided on a second side of the base opposite the first side.
The waterproof and sealed electronic circuit device according to claim 1, wherein:

The base includes a base case, a base circuit board disposed in the base case, and a waterproof sealing layer sealingly disposing the base circuit board on the base case.
The waterproof and sealed electronic circuit device according to claim 3, wherein,

An interface opening is provided on the base housing, and the internal interface protrudes through the interface opening so as to be connected with the control module.
The waterproof and sealed electronic circuit device according to claim 4, wherein,

A flange protruding toward the base circuit board or toward the control module is provided on the periphery of the interface opening.
The waterproof and sealed electronic circuit device according to claim 3, wherein,

A flexible filling material is provided between the upper surface of the base circuit board and the lower surface of the bottom plate of the base housing.
The waterproof and sealed electronic circuit device according to claim 3, wherein,

A waterproof dividing portion is provided between the base circuit boards corresponding to each of the two adjacent control modules in the at least two control modules.
The waterproof and sealed electronic circuit device according to claim 3, wherein,

A waterproof and breathable valve is arranged on the base shell to keep a certain pressure difference between the inner space of the base shell and the outside space.
The waterproof and sealed electronic circuit device according to claim 3, wherein,

The base circuit board includes a first circuit layer and a second circuit layer, the first circuit layer is adjacent to the first side, the second circuit layer is adjacent to a second side opposite the first side, the Circuits in the first circuit layer enable electrical connection between the at least two control modules.
The waterproof and sealed electronic circuit device according to claim 9, wherein,

The first circuit layer is provided with a low-voltage signal circuit, and the second circuit layer is provided with a high-voltage signal circuit and/or a power supply circuit.
The waterproof and sealed electronic circuit device according to claim 9 or 10, characterized in that:

A ground layer is provided between the first circuit layer and the second circuit layer.
The waterproof and sealed electronic circuit device according to claim 10, wherein:

A current flow layer is provided in the second circuit layer.
The waterproof and sealed electronic circuit device according to claim 3, wherein,

The waterproof sealing layer is formed by filling potting glue, and the waterproof sealing layer jointly seals the base circuit board and at least part of the external interface.
The waterproof and sealed electronic circuit device according to claim 1, wherein:

The control module includes a main circuit board, a first housing for accommodating the main circuit board, and a second housing for enclosing the main circuit board in the first housing, wherein the control module passes through the The first housing is sealingly disposed on the base.
The waterproof and sealed electronic circuit device according to claim 14, wherein:

The second housing is provided with a housing opening through which the internal interface provided on the base plate can pass.
The waterproof and sealed electronic circuit device according to claim 14, wherein:

At least one raised portion is provided on the second shell.
The waterproof and sealed electronic circuit device according to claim 14, wherein:

A heat dissipation structure is provided on the side of the first casing away from the substrate.
The waterproof and sealed electronic circuit device according to claim 1, wherein:

A sealing structure is provided between the control module and the base, and the sealing structure includes a sealing gasket provided between the control module and the first side of the base.
The waterproof and sealed electronic circuit device according to claim 18, wherein:

The sealing structure further includes a first sealing gasket accommodating groove provided on the side edge of the control module in contact with the base, and/or provided at a position of the base corresponding to the control module the second gasket accommodating groove.
The waterproof and sealed electronic circuit device according to claim 1, wherein:

A pre-positioning mechanism is arranged between the control module and the base,

Wherein, the pre-positioning mechanism includes a guide pin arranged on the base and a guide hole arranged in the control module, or

The pre-positioning mechanism includes a guide pin provided on the control module and a guide hole provided in the base.
The waterproof and sealed electronic circuit device according to claim 1, wherein:

A shock absorbing member is provided at a position where the electronic circuit device is mounted.
A mobile platform, characterized by comprising the waterproof and sealed electronic circuit device according to any one of claims 1-21.
An electronic device, characterized by comprising the waterproof and sealed electronic circuit device according to any one of claims 1-21.