Shielding device and vehicle-mounted power supply equipment

Abstract

The utility model discloses a shielding device and vehicle-mounted power supply equipment, and relates to the technical field of vehicle-mounted power supplies. The shielding device comprises a filtering module power board; and the shell is internally provided with a partition plate, the interior of the shell is divided into at least two containing cavities by the partition plate, and the filtering module and the power amplifier board are located in the different containing cavities respectively. The shielding device provided by the utility model can better shield the electromagnetic interference noise of the power board, and prevents the filtering module from being interfered and the function of the filtering module from being damaged.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle-mounted power supply, and in particular to a shielding device and a vehicle-mounted power supply device. Background Art

[0002] The on-board charger or on-board power assembly is one of the important components of the power system of new energy electric vehicles, providing power for the high-voltage and low-voltage systems of the entire vehicle. The product itself is prone to generate electromagnetic interference noise, which can easily affect the function and performance of the entire vehicle.

[0003] In order to solve the above problems, some shielding devices have been developed. However, the sealing of these shielding devices is poor, and the shielding piles will affect each other, which may eventually lead to the decline or loss of the function and performance of the whole vehicle. Utility Model Content

[0004] The present application provides a shielding device and a vehicle-mounted power supply device, which can better shield the electromagnetic interference noise of the power board, avoid interfering with the filter module and damaging the function of the filter module.

[0005] In a first aspect, the present application provides a shielding device, including a filter module, a power board and a shell, wherein the shell has a partition, and the partition divides the interior of the shell into at least two accommodating chambers, and the filter module and the power board are respectively located in different accommodating chambers.

[0006] The shielding device provided in the present application has multiple accommodating cavities inside, and the filter module and the power board are located in different accommodating cavities, thereby achieving spatial isolation between the filter module and the power board, preventing the electromagnetic interference noise of the power board from interfering with the filter module and damaging the function of the filter module.

[0007] In a possible implementation, the shielding device further includes a connector, the partition has a mounting opening, the connector passes through the mounting opening, the connector is electrically connected between the filter module and the power board, and the connector is sealed to the edge of the mounting opening. The filter module and the power board are electrically connected by the connector to achieve signal conduction between the filter module and the power board, and the connector is sealed to the mounting opening to shield electromagnetic interference noise leaked during the process of achieving signal conduction between the filter module and the power board through the connector, thereby better protecting the filter module.

[0008] In a possible implementation, the connector includes a waveguide structure, the waveguide structure has a cavity inside, and the waveguide structure electrically connects the filter module and the power board. The waveguide structure electrically connects the filter module and the power board, and the waveguide structure effectively attenuates or shields the electromagnetic interference noise of the power board when passing through the cavity, and while realizing the electrical connection between the filter module and the power board, it can also prevent the power board from interfering with the filter module.

[0009] In a possible implementation, the waveguide structure and the mounting opening are an integrated structure. The mounting opening can extend outward from the opening edge of the mounting opening to form a waveguide structure, and the waveguide structure and the mounting opening are integrally formed, which helps to improve the stability and sealing between the mounting opening and the waveguide structure, and prevents electromagnetic interference noise of the power board from leaking through the mounting opening.

[0010] In a possible implementation, the opening shape of the waveguide structure includes at least one of a rectangle, a hexagon and a circle. The opening shape of the waveguide structure can be selectively designed according to the frequency of the electromagnetic interference noise generated by the power board.

[0011] In a possible implementation, the shielding device includes at least two connection terminals, the at least two connection terminals are located at two ends of the connector, and the at least two connection terminals are electrically connected to the filter module and the power board respectively. The connection terminals can be fixed to the filter module and the power board respectively to realize power transmission between the filter module and the power board.

[0012] In a possible implementation, the number of the filter modules is at least one. Multiple filter modules can be designed correspondingly according to the electromagnetic interference noise in different frequency ranges generated by the vehicle-mounted power supply device, which can more comprehensively shield the electromagnetic interference noise in various frequency ranges, improve the anti-interference ability of the vehicle-mounted power supply device, and ensure the stability and reliability of the vehicle-mounted power supply device in different working environments.

[0013] In a possible implementation, the filter module includes a first filter module and a second filter module, and the first filter module and the second filter module are located in different accommodating cavities. By arranging multiple filter modules in different accommodating cavities, filter modules that are prone to generate electromagnetic noise can be selectively isolated according to the different working performances of different filter modules, so as to avoid mutual interference between different filter modules.

[0014] In one possible implementation, the first filter module is located in the first accommodating cavity, the second filter module is located in the second accommodating cavity, and the power board is located in the third accommodating cavity; the partition includes a first partition located between the first accommodating cavity and the third accommodating cavity, and also includes a second partition located between the second accommodating cavity and the third accommodating cavity, and both the first partition and the second partition are provided with installation ports.

[0015] The power board and the filter module are located in different accommodating chambers to prevent the electromagnetic interference noise generated by the power board from interfering with the filter module. Different filter modules are located in different accommodating chambers to prevent mutual interference between different filter modules. The power board, the first filter module and the second filter module are all located in different accommodating chambers, which can better shield the mutual interference between different components and avoid performance degradation or failure caused by mutual interference between different components, thereby improving the working performance and stability of the overall shielding device.

[0016] In a possible implementation, the connector includes a first connector and a second connector, the first connector is sealed to the mounting opening on the first partition, and the second connector is sealed to the mounting opening on the second partition. The mounting opening on the first partition is sealed to the first connector, and the mounting opening on the second partition is sealed to the second connector, so that the power board is electrically connected to the first filter module and the second filter module respectively, and the electromagnetic interference noise generated by the power board can be prevented from interfering with the first filter module and the second filter module.

[0017] In a possible implementation, the power board is located on one side of the filter module along the thickness direction of the power board. The power board and the filter module are spaced apart in the thickness direction of the power board, which can reasonably utilize the space of the shielding device and is conducive to the layout optimization of the shielding device.

[0018] In a possible implementation, both ends of the waveguide structure are electrically connected to the connection terminals respectively, the waveguide structure has a cavity inside, the connection terminal is in contact with the inner wall of the cavity, and the connection terminal electrically connects the waveguide structure, the power board and the filter module.

[0019] The outer wall of the connecting terminal can directly contact the inner wall of the cavity. The cavity plays a limiting role on the connecting terminal, can assist in the installation and fixation of the connecting terminal, prevent the connecting terminal from moving, improve the stability of the connection between the connecting terminal and the waveguide structure, and facilitate the electrical connection between the connecting terminal, waveguide structure, power board and filter module.

[0020] In a second aspect, the present application provides a vehicle-mounted power supply device, comprising a connector and any of the above-mentioned shielding devices, wherein the connector and the shielding device are electrically connected. The shielding device is installed in the vehicle-mounted power supply device to protect the electronic components and circuits inside the vehicle-mounted power supply device, so as to prevent external electromagnetic interference from affecting the normal operation of the vehicle-mounted power supply device, thereby achieving the stability of the performance of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is an exploded view of a shielding device provided in an embodiment of the present application;

[0022] Figure 2 It is a partial structural schematic diagram of a shielding device provided in an embodiment of the present application;

[0023] Figure 3 is a cross-sectional view of a shielding device provided in an embodiment of the present application;

[0024] Figure 4 is a cross-sectional view of a shielding device provided in an embodiment of the present application;

[0025] Figure 5A is a schematic diagram of a waveguide structure provided in an embodiment of the present application with a rectangular opening;

[0026] Figure 5B is a schematic diagram of a waveguide structure with a circular opening provided by an embodiment of the present application;

[0027] Figure 6 is a cross-sectional view of a shielding device provided in an embodiment of the present application;

[0028] Figure 7 It is a schematic diagram of the structure of the filter module provided in the implementation mode of the present application;

[0029] Figure 8 This is another schematic diagram of the structure of a filtering module provided in an embodiment of the present application. DETAILED DESCRIPTION

[0030] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0031] It should be clear that the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0032] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0033] It should be understood that the term "and / or" used in this article is only a description of the same field of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0034] It should be understood that the terms “first”, “second”, etc. used in the present application are only used for the purpose of distinguishing the description, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying an order.

[0035] In the description of the present application, the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a conflicting connection or an integrated connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0037] The present application provides a shielding device 100, see Figures 1 to 4 As shown, the shielding device 100 includes a filter module 110, a power board 120 and a housing 130. The shielding device 100 is used to reduce electromagnetic interference between different devices. The shielding device 100 can protect the device from interference and improve its performance and stability by filtering out electromagnetic interference signals within a specific frequency range.

[0038] The filter module 110 may include a capacitor 111, an inductor 112, a varistor 113 and a circuit board 114. The filter module described in the present application may include but is not limited to a high voltage DC output filter module, an AC power input filter module and a low voltage DC output filter module.

[0039] The power board 120 can realize the stable output of power and the control of output power. Specifically, the power board 120 can adjust and control the power output to make it have better stability and accuracy, thereby ensuring the normal operation of the device.

[0040] The shell 130 has a partition 131, which divides the inside of the shell 130 into at least two accommodating chambers 132. The partition 131 is used to divide the inside of the shell 130. The partition 131 can be designed as an integral molding with the shell 130. During the preparation process, the shell 130 and the partition 131 can be directly combined together by injection molding, die casting or other molding processes to form an integral structure. The partition 131 can also be fixed to the inside of the shell 130 and connected to the inner wall surface of the shell 130 by welding or bonding. The materials used to prepare the partition 131 and the shell 130 can be the same or different. The partition 131 is located inside the shell 130 and divides the inside of the shell 130 into different accommodating chambers 132. It can be understood that the partition 131 can be a structure with a regular shape or an irregular structure. Whether it is a regular or irregular structure, the structure that can divide the inside of the shell 130 into different accommodating chambers 132 belongs to the structural scope of the partition 131.

[0041] The filter module 110 and the power board 120 are located in the housing 130. The filter module 110 and the power board 120 are spaced apart along the thickness direction of the power board 120. The power board 120 is located on one side of the filter module 110 along the thickness direction of the power board 120. Figure 3 As shown, the thickness direction of the power board 120 can be Figure 3 In the Y direction, the power board 120 is located on one side of the filter module 110 along the Y direction, and the power board 120 and the filter module 110 are spaced apart in the Y direction. The partition 131 can separate the filter module 110 and the power board 120. Specifically, the partition 131 divides the interior of the housing 130 into at least two accommodating chambers 132. The filter module 110 and the power board 120 are respectively located in different accommodating chambers 132. Different accommodating chambers 132 separate the filter module 110 and the power board 120. The filter module 110 and the power board 120 are independent of each other in space, and can shield electromagnetic interference noise, so as to prevent the electromagnetic interference noise from coupling to the filter module 110, causing the filter module 110 to fail or reduce performance. In addition, the filter module 110 and the power board 120 are designed independently, avoiding the need to design additional space for the filter module 110 on the power board 120, which is beneficial to expanding the utilization area of ​​the power board 120, setting more power components on the power board 120, and improving the power density of the power board 120; or, it is beneficial to reduce the size of the power board 120 and reduce the space occupied by the power board 120.

[0042] The filter module 110 has an input end 115 and an output end 116. The input end 115 of the filter module 110 can be electrically connected to the connector, and the output end 116 of the filter module 110 can be electrically connected to the power board 120. The input end electrically connected to the connector can remove noise and interference in the signal after receiving the signal, and the output end 116 transmits the output signal processed by the filter module 110 to the power board 120 for further processing of the signal.

[0043] The shielding device 100 provided in the present application has a plurality of accommodating cavities 132 therein, and the filter module 110 and the power board 120 are located in different accommodating cavities, thereby achieving spatial isolation between the filter module 110 and the power board 120, thereby preventing the electromagnetic interference noise of the power board 120 from interfering with the filter module 110 and damaging the function of the filter module 110.

[0044] In one possible implementation, see Figures 1 to 4 As shown, the shielding device 100 also includes a connector 140 , and the partition 131 has an installation opening 1311 . The connector 140 passes through the installation opening 1311 . The connector 140 is electrically connected between the filter module 110 and the power board 120 , and the connector 140 and the edge of the installation opening 1311 are sealed.

[0045] The connector 140 passes through the mounting opening 1311, and is electrically connected between the filter module 110 and the power board 120. The connector 140 is located between the filter module 110 and the power board 120, and the connector 140 electrically connects the filter module 110 and the power board 120 to achieve power transmission between the filter module 110 and the power board 120. The connector 140 can be located in the same accommodating cavity 132 as the filter module 110, the connector 140 can also be located in the same accommodating cavity 132 as the power board 120, and the connector 140 can also be partially located in the same accommodating cavity 132 as the filter module 110, and the other part is located in the same accommodating cavity 132 as the power board 120.

[0046] The edge of the connector 140 and the mounting port 1311 are sealed and connected to shield the electromagnetic interference noise leaked through the mounting port 1311 during the assembly process, and protect the filter module 110. The connector 140 is sealed and connected to the edge of the mounting port 1311, and the outer wall surface of the connector 140 is connected to the inner wall surface of the mounting port 1311 and a sealing treatment is performed at the connection. The connector 140 and the mounting port 1311 can also be an integrated structure, and the mounting port 1311 extends the connector 140 outward. The filter module 110 and the power board 120 are electrically connected by the connector 140 to achieve signal conduction between the filter module 110 and the power board 120, and the electromagnetic interference noise leaked during the signal conduction between the filter module 110 and the power board 120 through the connector 140 is shielded by sealing the connector 140 and the mounting port 1311, so as to better protect the filter module.

[0047] In one possible implementation, see Figure 3 As shown, the connecting member 140 includes a waveguide structure 141 , the waveguide structure 141 has a cavity 1411 inside, and the waveguide structure 141 is electrically connected to the filter module 110 and the power board 120 .

[0048] The waveguide structure 141 may be a cutoff waveguide. The waveguide structure 141 in the present application is described by taking a cutoff waveguide as an example. A cutoff waveguide is used to transmit electromagnetic waves. The cutoff waveguide has a cutoff frequency. Electromagnetic waves higher than the cutoff frequency can be transmitted in the cutoff waveguide, while electromagnetic waves lower than the cutoff frequency will be shielded or absorbed.

[0049] The cutoff waveguide has a cavity 1411 inside, and electromagnetic waves can be transmitted in the cavity 1411. The cutoff waveguide can selectively transmit signals within a specific frequency range while shielding signals of other frequencies, ensuring that the electromagnetic interference noise of the power board 120 is effectively attenuated when passing through the cavity 1411.

[0050] The cutoff waveguide (ie, the waveguide structure 141 ) may be made of metal or other conductive materials, and can ensure electrical conduction between the power board 120 and the filter module 110 .

[0051] In one possible implementation, see Figure 3 As shown, the waveguide structure 141 and the mounting opening 1311 are an integrated structure. The mounting opening 1311 can extend outward from the opening edge of the mounting opening 1311 to form the waveguide structure 141. The waveguide structure 141 can be regarded as an extension of the mounting opening 1311, connected to the mounting opening 1311 and existing as a whole. The waveguide structure 141 and the mounting opening 1311 are formed in one piece, which helps to improve the stability and sealing between the mounting opening 1311 and the waveguide structure 141, and prevent the electromagnetic interference noise in the first accommodating cavity from leaking through the mounting opening 1311.

[0052] In one embodiment, see Figure 3 As shown, the partition 131 and the housing 130 are an integrally formed structure, and the mounting opening 1311 and the waveguide structure 141 are also an integrally formed structure. That is, the housing 130, the partition 131, the mounting opening 1311 and the waveguide structure 141 can be processed at one time in the same process, which can reduce the assembly process and better achieve the shielding of electromagnetic interference noise between the filter module 110 and the power board 120.

[0053] In a possible implementation, the opening shape of the waveguide structure 141 includes at least one of a rectangular, hexagonal, and circular shape. Taking the waveguide structure 141 as a cutoff waveguide as an example, the cutoff waveguide opening (i.e., the cross section) can be circular, hexagonal, or rectangular. The relationship between the filter cutoff frequency and the maximum opening size of the rectangular and hexagonal cutoff waveguides is: c =15·10 9 / l, see Figure 5A As shown, Figure 5A The waveguide structure opening cross section is shown as a rectangle. When the waveguide structure opening cross section is a hexagon, Figure 5A Similarly, where f c is the cutoff frequency; l is the maximum size of the opening. The formula for the absorption loss of the cutoff waveguide is as follows: SE = 27·t / l, where SE is the absorption loss of the cutoff waveguide; t is the length of the cutoff waveguide, and l is the maximum size of the opening.

[0054] See also Figure 5B As shown, the relationship between the cutoff frequency of the circular cutoff waveguide filter and the maximum size of the opening is: c =17.6·10 9 / d, where f c is the cutoff frequency; d is the inner diameter of the cutoff waveguide. The cutoff waveguide absorption loss formula is as follows: SE = 27·t / d, where SE is the cutoff waveguide absorption loss; t is the cutoff waveguide length, and d is the inner diameter of the cutoff waveguide.

[0055] When designing the cutoff waveguide, the maximum frequency f(≤f c / 5), and the required absorption loss SE, the inner diameter size and the length of the cutoff waveguide are designed to ensure that the electromagnetic interference noise will be effectively shielded or absorbed when passing through the inside of the cutoff waveguide, so as to avoid the power board 120 from generating electromagnetic interference noise interference to the filter module 110.

[0056] In a possible implementation, the shielding device 100 includes at least two connection terminals 150, the at least two connection terminals 150 are located at both ends of the connector 140, and the at least two connection terminals 150 are electrically connected to the filter module 110 and the power board 120, respectively. The connection terminals 150 can be fixed to the filter module 110 and the power board 120 by screws, respectively. The connection terminals 150 can be used to realize power transmission between the filter module 110 and the power board 120.

[0057] In a possible implementation, both ends of the waveguide structure 141 are electrically connected to the connection terminal 150, the waveguide structure 141 has a cavity 1411 inside, the connection terminal 150 is in contact with the inner wall of the cavity 1411, and the connection terminal 150 is electrically connected to the waveguide structure 141, the power board 120 and the filter module 110. The outer wall of the connection terminal 150 can directly contact the inner wall of the cavity 1411, and the cavity 1411 plays a limiting role on the connection terminal 150, which can assist in the installation and fixing of the connection terminal 150, prevent the connection terminal 150 from moving, improve the stability of the connection between the connection terminal 150 and the waveguide structure 141, and facilitate the electrical connection between the connection terminal 150, the waveguide structure 141, the power board 120 and the filter module 110.

[0058] In one possible implementation, see Figure 1 and Figure 4 As shown, the housing 130 may further include an upper cover plate 133, a lower cover plate 134 and a housing body 135. The power board 120 is located in a receiving cavity formed by the upper cover plate 133, the partition plate 131 and a portion of the housing body 135. The filter module 110 is located in a receiving cavity formed by the lower cover plate 134, the partition plate 131 and a portion of the housing body 135.

[0059] In one possible implementation, the number of the filter modules 110 is at least one. The number of the filter modules 110 may be multiple, and the multiple filter modules 110 may be located in the same accommodating cavity 132. In one embodiment, there may be one filter module 110, and one filter module 110 is located in an accommodating cavity 132 different from the power board 120. In one embodiment, there may also be three filter modules 110, and the three filter modules 110 are located in the same accommodating cavity 132, and the three filter modules 110 and the power board 120 are located in different accommodating cavities 132. This implementation does not limit the number of filter modules 110. Multiple filter modules 110 can be designed accordingly according to the electromagnetic interference noise of different frequency ranges generated by the vehicle-mounted power supply equipment, and can more comprehensively shield the electromagnetic interference noise in various frequency ranges, improve the anti-interference ability of the vehicle-mounted power supply equipment, and ensure the stability and reliability of the vehicle-mounted power supply equipment in different working environments.

[0060] In a possible implementation, the filter module 110 includes a first filter module 110a and a second filter module 110b, and the first filter module 110a and the second filter module 110b are located in different accommodating cavities 132. The first filter module 110a and the second filter module 110b described in this implementation refer to filter modules located in different accommodating cavities, respectively. The difference between the first filter module 110a and the second filter module 110b lies in the difference in spatial position of the first filter module 110a and the second filter module 110b, that is, the difference in the accommodating cavities in which they are located. The number of the first filter module 110a can be at least one, and the number of the second filter module 110b can also be at least one.

[0061] In some possible embodiments, the first filter module 110a is located in the first accommodating cavity 1321, and the first filter module 110a has one, and the second filter module 110b is located in the second accommodating cavity 1322, and the second filter module 110b has one. Alternatively, the first filter module 110a is located in the first accommodating cavity 1321, and the first filter module 110a has two, and the second filter module 110b is located in the second accommodating cavity 1322, and the second filter module 110b has one. Alternatively, the first filter module 110a is located in the first accommodating cavity 1321, and the first filter module 110a has one, and the second filter module 110b is located in the second accommodating cavity 1322, and the second filter module 110b has two, which are not listed one by one in this application. By arranging multiple filter modules in different accommodating cavities, the filter modules that are prone to electromagnetic interference noise can be selectively isolated according to the different working performances of different filter modules to avoid mutual interference between different filter modules.

[0062] In a possible implementation, the first filter module 110a is located in the first accommodating cavity 1321, the second filter module 110b is located in the second accommodating cavity 1322, and the power board 120 is located in the third accommodating cavity 1323. The partition 131 includes a first partition 1312 located between the first accommodating cavity 1321 and the third accommodating cavity 1323, and also includes a second partition 1313 located between the second accommodating cavity 1322 and the third accommodating cavity 1323. The first partition 1312 and the second partition 1313 are both provided with mounting openings 1311.

[0063] See also Figure 6As shown, the accommodating cavity 132 also includes a fourth accommodating cavity 1324, and the filter module 110 also includes a third filter module 110c, and the third filter module 110c is located in the fourth accommodating cavity 1324. The first filter module 110a, the second filter module 110b and the third filter module 110c each have one. A third partition plate 1314 is provided between the third accommodating cavity 1323 and the fourth accommodating cavity 1324, and the third partition plate 1314 also has an installation port 1311. The installation port 1311 can be connected to the connector 140, and the electrical connection between the power board 120 and different filter modules 110 is realized through the connector 140.

[0064] The power board 120 and the filter module 110 are located in different accommodating chambers 132 to prevent the electromagnetic interference noise generated by the power board 120 from interfering with the filter module 110. Different filter modules 110 are located in different accommodating chambers 132 to prevent mutual interference between different filter modules 110. The power board 120, the first filter module 110a, the second filter module 110b and the third filter module 110c are all located in different accommodating chambers 132, which can better shield the mutual interference between different components, avoid performance degradation or failure caused by mutual interference between different components, and thus improve the working performance and stability of the overall shielding device 100.

[0065] In a possible implementation, the connector 140 includes a first connector 142 and a second connector 143 . The first connector 142 is sealed to the mounting opening 1311 on the first partition 1312 , and the second connector 143 is sealed to the mounting opening 1311 on the second partition 1313 .

[0066] Continue reading Figure 6 As shown, the connector 140 further includes a third connector 144. A third partition 1314 is provided between the third accommodating cavity 1323 and the fourth accommodating cavity 1324. The third partition 1314 also has an installation opening 1311. The third connector 144 and the installation opening 1311 on the third partition 1314 are sealed and connected.

[0067] Specifically, the power board 120 is located in the third accommodating cavity 1323, the first filter module 110a is located in the first accommodating cavity 1321, and a first partition 1312 is provided between the first accommodating cavity 1321 and the third accommodating cavity 1323. The first partition 1312 has an installation port 1311, and the installation port 1311 on the first partition 1312 is sealed and connected to the first connecting member 142. The two ends of the first connecting member 142 are electrically connected to the connecting terminals respectively, and the connecting terminals are respectively located on the power board 120 and the first filter module 110a and are electrically connected to the power board 120 and the first filter module 110a respectively. The first connecting member 142 can be a waveguide structure. The power board 120 and the first filter module 110a are located in different accommodating cavities and are electrically connected through the first connecting member 142. At the same time, the electromagnetic interference noise generated by the power board 120 can be prevented from interfering with the first filter module 110a.

[0068] The second filter module 110b is located in the second accommodating cavity 1322, and a second partition 1313 is provided between the second accommodating cavity 1322 and the third accommodating cavity 1323. The second partition 1313 has an installation port 1311, and the installation port 1311 on the second partition 1313 is sealed and connected to the second connecting member 143. Both ends of the second connecting member 143 are electrically connected to the connecting terminals respectively, and the connecting terminals are respectively located on the power board 120 and the second filter module 110b and are electrically connected to the power board 120 and the second filter module 110b respectively. The second connecting member 143 can be a waveguide structure. The power board 120 and the second filter module 110b are located in different accommodating cavities and are electrically connected through the second connecting member 143, while achieving electrical connection, it can also prevent the electromagnetic interference noise generated by the power board 120 from interfering with the second filter module 110b.

[0069] The third filter module 110c is located in the fourth accommodating cavity 1324, and a third partition 1314 is provided between the fourth accommodating cavity 1324 and the third accommodating cavity 1323. The third partition 1314 has an installation port 1311, and the installation port 1311 on the third partition 1314 is sealed and connected to the third connector 144. The two ends of the third connector 144 are respectively electrically connected to the connection terminals, and the connection terminals are respectively located on the power board 120 and the third filter module 110c and are respectively electrically connected to the power board 120 and the third filter module 110c. The third connector 144 can be a waveguide structure. The power board 120 and the third filter module 110c are located in different accommodating cavities and are electrically connected through the third connector 144, while being able to prevent the electromagnetic interference noise generated by the power board 120 from interfering with the third filter module 110c. It can be understood that the number of connectors 140 can be multiple.

[0070] In one embodiment, the first filter module 110a may be an AC input module or a high voltage DC output filter module, see Figure 7 As shown, the first filtering module 110a includes a first inductor 111a, a second inductor 111b, a first capacitor 112a, a second capacitor 112b, a varistor 113 and a circuit board 114. The first inductor 111a, the second inductor 111b, the first capacitor 112a, the second capacitor 112b and the varistor 113 are arranged on the circuit board 114.

[0071] In one embodiment, the second filter module 110b may be a low voltage DC output filter module, see Figure 8 As shown, the low voltage DC output filter module includes an output terminal 116, a first inductor 111a, a second inductor 111b, a first capacitor 112a and a second capacitor 112b; the output terminal 116 can be a copper bar structure, and the output terminal 116 passes through the hollow area of ​​the first capacitor 112a and the second capacitor 112b and is connected to the first capacitor 112a and the second capacitor 112b. The output terminal 116, the first capacitor 112a and the second capacitor 112b can be integrated into one, which can reduce the assembly process and ensure the tightness.

[0072] In a possible implementation manner, the power board 120 is located on one side of the filter module 110 along the thickness direction of the power board 120. Figure 3 As shown, the thickness direction of the power board 120 can be Figure 3 In the Y direction, the power board 120 and the filter module 110 are spaced apart in the Y direction, which can reasonably utilize the space of the shielding device 100 in the Y direction and is beneficial to the layout optimization of the shielding device 100.

[0073] The present application also provides a vehicle-mounted power supply device for providing power supply for various transportation vehicles such as automobiles, trucks, and ships. The vehicle-mounted power supply device includes a connector and a shielding device 100 described in any of the above embodiments, and the connector and the shielding device 100 are electrically connected. The connector can be electrically connected to the input terminal 115 of the filter module 110.

[0074] The connector can be used to electrically connect to the power module of the vehicle power supply device, and the filter module 110 is electrically connected to the power module through the connector to perform power transmission or data communication. The connector can be a plug, a socket, a terminal connector or other types of connectors.

[0075] By installing the shielding device 100 in the vehicle power supply device, the stability and safety of the internal circuit of the vehicle power supply device can be achieved. The shielding device 100 can remove electromagnetic noise and interference in the signal input by the connector, protect the electronic components and circuits inside the vehicle power supply device, prevent external electromagnetic interference from affecting the normal operation of the vehicle power supply device, and thus achieve the stability of the performance of the whole vehicle.

[0076] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A shielding device, It is characterized in that include: Filter module; Power board; The shell has a partition inside, and the partition divides the inside of the shell into at least two accommodating chambers. The filter module and the power board are respectively located in different accommodating chambers.

2. The shielding device according to claim 1, It is characterized in that The shielding device also includes a connector. The partition has a mounting opening. The connector passes through the mounting opening. The connector is electrically connected between the filter module and the power board. The connector is sealed to an edge of the mounting opening.

3. The shielding device according to claim 2, It is characterized in that The connecting member comprises a waveguide structure, the interior of the waveguide structure has a cavity, and the waveguide structure electrically connects the filter module and the power board.

4. The shielding device according to claim 3, It is characterized in that The waveguide structure and the mounting opening are an integrated structure.

5. The shielding device according to claim 4, It is characterized in that The opening shape of the waveguide structure includes at least one of a rectangle, a hexagon and a circle.

6. The shielding device according to any one of claims 2 to 5, It is characterized in that The shielding device comprises at least two connection terminals, the at least two connection terminals are located at two ends of the connection member, and the at least two connection terminals are electrically connected to the filter module and the power board respectively.

7. The shielding device according to claim 6, It is characterized in that The number of the filtering module is at least one.

8. The shielding device according to claim 7, It is characterized in that The filter module includes a first filter module and a second filter module, and the first filter module and the second filter module are located in different accommodating cavities.

9. The shielding device according to claim 8, It is characterized in that The first filter module is located in the first accommodating cavity, the second filter module is located in the second accommodating cavity, and the power board is located in the third accommodating cavity; The partition includes a first partition located between the first accommodating cavity and the third accommodating cavity, and also includes a second partition located between the second accommodating cavity and the third accommodating cavity, and both the first partition and the second partition are provided with mounting ports.

10. The shielding device according to claim 9, It is characterized in that The connecting member includes a first connecting member and a second connecting member, the first connecting member is sealed and connected to the installation opening on the first partition plate, and the second connecting member is sealed and connected to the installation opening on the second partition plate.

11. The shielding device according to claim 1, It is characterized in that The power board is located on one side of the filter module along a thickness direction of the power board.

12. A vehicle-mounted power supply device, It is characterized in that It comprises a connector and the shielding device according to any one of claims 1 to 11, wherein the connector and the shielding device are electrically connected.

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