An intelligent high-frequency silicon carbide switching power supply electromagnetic interference suppression device and method

Abstract

The present invention relates to an intelligent high-frequency silicon carbide switching power supply electromagnetic interference suppression device and method, comprising a shielding shell and a circuit board, the shielding shell comprising a bottom shell and a top shell, the inner surface of the bottom shell being provided with a first electromagnetic shielding coating, and the inner surface of the top shell being provided with a second electromagnetic shielding coating; a plurality of metal guide pillars are provided on the upper surface edge of the bottom shell, and a metal guide sleeve cooperating with the plurality of metal guide pillars is provided on the lower surface edge of the top shell; a mounting seat, a lifting unit and an intelligent controller are provided in the bottom shell, the intelligent controller monitors the status data of the high-frequency silicon carbide switching power supply module affected by electromagnetic interference, and controls the operation of the lifting unit according to the obtained status data; the size of the heat dissipation gap can be effectively adjusted based on the set safety threshold and danger threshold, thereby balancing the electromagnetic shielding protection and heat dissipation requirements, and improving the adaptability of the product.

Description

Technical Field

[0001] The present invention relates to the technical field of silicon carbide switching power supplies, and more particularly to an intelligent high-frequency silicon carbide switching power supply electromagnetic interference suppression device and method. Background Art

[0002] An intelligent, high-frequency silicon carbide (SiC) switching power supply is an advanced power conversion device that combines silicon carbide semiconductor materials with high-frequency switching technology. Its core goal is to leverage the exceptional performance of SiC devices to achieve high-efficiency, high-power density power conversion, while optimizing system stability through intelligent control. The precision components within intelligent, high-frequency silicon carbide (SiC) switching power supplies are susceptible to electromagnetic interference, and are typically shielded by a shielding enclosure. However, these components also generate significant heat during operation, and an overly enclosed shielding enclosure makes it difficult for heat to dissipate. Therefore, a device and method for electromagnetic interference suppression in intelligent, high-frequency silicon carbide switching power supplies is needed that strikes a balance between these two requirements. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an intelligent high-frequency silicon carbide switching power supply electromagnetic interference suppression device and an intelligent high-frequency silicon carbide switching power supply electromagnetic interference suppression method in response to the above-mentioned defects of the prior art.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] An intelligent high-frequency silicon carbide switching power supply electromagnetic interference suppression device is constructed, comprising a shielding shell and a circuit board arranged in the shielding shell, the circuit board being provided with a high-frequency silicon carbide switching power supply module, wherein the shielding shell comprises a bottom shell and a top shell, the inner surface of the bottom shell being provided with a first electromagnetic shielding coating, and the inner surface of the top shell being provided with a second electromagnetic shielding coating; a plurality of metal guide pillars are provided on the upper surface edge of the bottom shell, and a plurality of metal guide sleeves cooperating with the metal guide pillars are provided on the lower surface edge of the top shell; the metal guide pillars are electrically connected to the first electromagnetic shielding coating, and the metal guide sleeves are electrically connected to the second electromagnetic shielding coating; a mounting seat for mounting the circuit board, a lifting unit for driving the top shell to rise and fall, and an intelligent controller are provided in the bottom shell, the intelligent controller monitors the status data of the high-frequency silicon carbide switching power supply module affected by electromagnetic interference, and controls the operation of the lifting unit based on the status data obtained.

[0006] The intelligent high-frequency silicon carbide switching power supply electromagnetic interference suppression device described in the present invention, wherein the mounting base is made of metal material and has an L-shaped cross-section, and a hollow groove is provided in the middle of the surface where the lateral edge of the mounting base is located; the circuit board is installed directly above the hollow groove; and the intelligent controller is installed on the surface where the longitudinal edge of the mounting base is located.

[0007] The intelligent high-frequency silicon carbide switching power supply electromagnetic interference suppression device described in the present invention, wherein the lifting unit includes a first motor; the first motor is installed on the surface where the longitudinal edge of the mounting base is located, and the movable end of the first motor is provided with a fan blade; the lifting unit also includes a cam and a transverse movement unit that drives the cam to move transversely, and the transverse movement unit is provided on the surface shell.

[0008] The intelligent high-frequency silicon carbide switching power supply electromagnetic interference suppression device described in the present invention is characterized in that the outer edge of the fan blade is provided with a first convex arc surface, and the lower surface edge of the cam is provided with a second arc surface that cooperates with the first arc surface.

[0009] The intelligent high-frequency silicon carbide switching power supply electromagnetic interference suppression device described in the present invention, wherein the transverse movement unit includes a screw rod and a second motor that drives the screw rod; a soft cable plug electrically connected to the screw rod and the second motor is provided on the surface shell, and a socket that cooperates with the soft cable plug is provided on the mounting seat, and the socket is electrically connected to the intelligent controller.

[0010] The intelligent high-frequency silicon carbide switching power supply electromagnetic interference suppression device described in the present invention is characterized in that a plurality of reset springs are provided at the upper end of the mounting seat, a screw is provided at the upper end of the reset spring, a countersunk hole is provided on the surface shell, a through hole for the screw to pass through is provided on the bottom surface of the countersunk hole, and a nut is provided in the countersunk hole to cooperate with the screw to lock.

[0011] The intelligent high-frequency silicon carbide switching power supply electromagnetic interference suppression device of the present invention is characterized in that a spline is provided on the shaft of the screw, and a keyway is provided on the inner wall of the through hole to cooperate with the spline.

[0012] A method for suppressing electromagnetic interference of an intelligent high-frequency silicon carbide switching power supply is provided, using the intelligent high-frequency silicon carbide switching power supply electromagnetic interference suppression device as described above, wherein the method comprises the steps of:

[0013] During operation, the intelligent controller monitors the status data of the high-frequency silicon carbide switching power supply module affected by electromagnetic interference;

[0014] If the status data is lower than the set safety threshold, the lifting unit is controlled to operate and drive the front shell to rise to the first height. When the front shell is at the first height, the metal guide pillars are still located in the corresponding metal guide sleeves. The first electromagnetic shielding coating, the multiple metal guide pillars, the multiple metal guide sleeves, and the second electromagnetic shielding coating constitute an electromagnetic shielding net for electromagnetic shielding protection, and a heat dissipation gap is formed between the front shell and the bottom shell.

[0015] If the status data is higher than the set safety threshold and lower than the set danger threshold, the lifting unit is controlled to drive the surface shell to be lifted and lowered to a second height that can restore the status data to a second height lower than the set safety threshold, and the value of the second height is lower than the value of the first height; the first electromagnetic shielding coating, multiple metal guide pillars, multiple metal guide sleeves, and the second electromagnetic shielding coating constitute an electromagnetic shielding net for electromagnetic shielding protection, and a heat dissipation gap is formed between the surface shell and the bottom shell;

[0016] If the status data is higher than the set danger threshold, the lifting unit is controlled to operate and drive the top shell and the bottom shell to close.

[0017] The beneficial effects of the present invention are as follows: during operation, the intelligent controller monitors the status data of the high-frequency silicon carbide switching power supply module subjected to electromagnetic interference; if the status data is lower than a set safety threshold, the lifting unit is controlled to operate to drive the front shell to a first height. When the front shell is at the first height, the metal guide pillars are still located in the corresponding metal guide sleeves. The first electromagnetic shielding coating, multiple metal guide pillars, multiple metal guide sleeves, and the second electromagnetic shielding coating constitute an electromagnetic shielding net for electromagnetic shielding protection, and a heat dissipation gap is formed between the front shell and the bottom shell; if the status data is higher than a set safety threshold and lower than a set danger threshold, the lifting unit is controlled to operate to drive the front shell to be raised and lowered to a second height that can restore the status data to a height lower than the set safety threshold, the value of the second height is lower than the value of the first height; the first electromagnetic shielding coating, multiple metal guide pillars, multiple metal guide sleeves, and the second electromagnetic shielding coating constitute an electromagnetic shielding net for electromagnetic shielding protection, and a heat dissipation gap is formed between the front shell and the bottom shell; if the status data is higher than a set danger threshold, the lifting unit is controlled to operate to drive the front shell and the bottom shell to close; by applying the method of the present application, the size of the heat dissipation gap can be effectively adjusted based on the set safety threshold and danger threshold, thereby balancing the electromagnetic shielding protection and heat dissipation requirements and improving the adaptability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below with reference to the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive efforts.

[0019] Figure 1 This is a cross-sectional view of an intelligent high-frequency silicon carbide switching power supply electromagnetic interference suppression device according to a preferred embodiment of the present invention;

[0020] Figure 2 This is a structural diagram of a mounting base for an intelligent high-frequency silicon carbide switching power supply electromagnetic interference suppression device according to a preferred embodiment of the present invention;

[0021] Figure 3This is a flow chart of a method for suppressing electromagnetic interference of an intelligent high-frequency silicon carbide switching power supply according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the following will be a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work shall fall within the scope of protection of the present invention.

[0023] The intelligent high-frequency silicon carbide switching power supply electromagnetic interference suppression device of the preferred embodiment of the present invention is as follows: Figure 1 See also Figure 2 , comprising a shielding shell 1 and a circuit board 2 arranged in the shielding shell 1, the circuit board 2 is provided with a high-frequency silicon carbide switching power supply module 3, the shielding shell 1 comprises a bottom shell 10 and a top shell 11, the inner surface of the bottom shell 10 is provided with a first electromagnetic shielding coating 100, and the inner surface of the top shell 11 is provided with a second electromagnetic shielding coating 110; a plurality of metal guide pillars 101 are provided on the upper surface edge of the bottom shell 10, and a metal guide sleeve 111 is provided on the lower surface edge of the top shell 11 for cooperating with the plurality of metal guide pillars; the metal guide pillars 101 are electrically connected to the first electromagnetic shielding coating 100, and the metal guide sleeve 111 is electrically connected to the second electromagnetic shielding coating 110; a mounting seat 7 for mounting the circuit board 2, a lifting unit for driving the top shell 11 to rise and fall, and an intelligent controller 5 are provided in the bottom shell 10, the intelligent controller 5 monitors the status data of the high-frequency silicon carbide switching power supply module 3 affected by electromagnetic interference, and controls the operation of the lifting unit according to the status data obtained;

[0024] During operation, the intelligent controller 5 monitors the status data of the high-frequency silicon carbide switching power supply module 3 affected by electromagnetic interference; if the status data is lower than the set safety threshold, the lifting unit is controlled to operate to drive the surface shell 11 to rise to the first height. When the surface shell 11 is at the first height, the metal guide column 101 is still located in the corresponding metal guide sleeve 111, and the first electromagnetic shielding coating 100, multiple metal guide columns 101, multiple metal guide sleeves 111 and the second electromagnetic shielding coating 110 form an electromagnetic shielding net for electromagnetic shielding protection, and a heat dissipation gap is formed between the surface shell 11 and the bottom shell 10; if the status data is higher than the set safety threshold If the status data is higher than the set danger threshold, the lifting unit is controlled to operate to drive the front shell 11 to be raised and lowered to a second height that can restore the status data to a second height lower than the set safety threshold, and the value of the second height is lower than the value of the first height; the first electromagnetic shielding coating 100, the plurality of metal guide pillars 101, the plurality of metal guide sleeves 111, and the second electromagnetic shielding coating 110 form an electromagnetic shielding net for electromagnetic shielding protection, and a heat dissipation gap (smaller than the previous gap) is formed between the front shell 11 and the bottom shell 10; if the status data is higher than the set danger threshold, the lifting unit is controlled to operate to drive the front shell 11 and the bottom shell 10 to close;

[0025] By applying the methods of this application, the size of the heat dissipation gap can be effectively adjusted based on the set safety threshold and danger threshold, thereby balancing the electromagnetic shielding protection and heat dissipation requirements and improving the adaptability of the product; it is especially suitable for applications in scenarios where the electromagnetic interference intensity may change, such as in a computer room with a relatively dense equipment density.

[0026] Preferably, the mounting base 7 is made of metal material and has an L-shaped cross-section. A hollow groove 70 is provided in the middle of the surface where the transverse edge of the mounting base 7 is located; the circuit board 2 is installed directly above the hollow groove 70; the intelligent controller 5 is installed on the surface where the longitudinal edge of the mounting base 7 is located; the lifting unit includes a first motor 40; the first motor 40 is installed on the surface where the longitudinal edge of the mounting base 7 is located, and the movable end of the first motor 40 is provided with a fan blade 41; the lifting unit also includes a cam 42 and a transverse movement unit 43 for driving the cam to move transversely, and the transverse movement unit 43 is provided on the surface shell; the outer edge of the fan blade 41 is provided with a first convex curved surface 410, and the lower surface edge of the cam 42 is provided with a second curved surface 420 that cooperates with the first curved surface 410;

[0027] When in use, there are two modes, one is active cooling mode and the other is regulation mode;

[0028] In adjustment mode, the transverse movement unit 43 drives the cam 42 to move to the position directly above the fan blade 41. The fan blade 41 is rotated by the first motor 40. The first curved surface 410 and the second curved surface 420 cooperate to form a cam assembly, thereby adjusting the height of the housing (at this time, heat is dissipated according to the heat dissipation gap described above).

[0029] When no adjustment is required, the top shell descends under its own weight to fit the bottom shell. At this time, the lateral movement unit 43 drives the cam 42 to move away from directly above the fan blade 41. The first motor 40 drives the fan blade 41 to rotate, dissipating heat from the circuit board 2 to prevent heat accumulation on the circuit board (after the heat is quickly dissipated within the shielding shell 1, it is dissipated by heat conduction from the shielding shell 1 to the outside world);

[0030] The mounting base 7 provides a mounting platform and is also used to dissipate heat from the circuit board 2 .

[0031] Preferably, the transverse movement unit 43 includes a screw rod 430 and a second motor 431 that drives the screw rod; a screw rod and a soft flat cable plug 432 electrically connected to the second motor are provided on the surface shell 11, and a socket 71 that cooperates with the soft flat cable plug 432 is provided on the mounting seat 7, and the socket 71 is electrically connected to the intelligent controller 5; during installation, first connect the soft flat cable plug 432 to the socket 71 accordingly, and then assemble the surface shell 11; the structure is simple and easy to operate.

[0032] Preferably, a plurality of return springs 72 are provided at the upper end of the mounting seat 7, a screw 73 is provided at the upper end of the return spring 72, a countersunk hole 112 is provided on the surface shell 11, a through hole for the screw 73 to pass through is provided on the bottom surface of the countersunk hole 112, a nut 114 is provided in the countersunk hole 112 and is locked with the screw 73; a spline 74 is provided on the rod of the screw 73, and a keyway 115 is provided on the inner wall of the through hole to cooperate with the spline 74;

[0033] During installation, the screw 73 is passed through the through hole, and the spline 74 and the keyway 115 cooperate to prevent the screw 73 from axial rotation, and then the nut 114 and the screw are locked and installed; after installation, multiple springs 72 tighten the face shell 11, and when the face shell 11 is pushed upward, the spring 72 is stretched to provide a reset force for the face shell 11, ensuring the reliability of state switching, and assembly is also very convenient.

[0034] An intelligent high-frequency silicon carbide switching power supply electromagnetic interference suppression method, using the intelligent high-frequency silicon carbide switching power supply electromagnetic interference suppression device as described above, such as Figure 3 As shown, the method includes the steps of:

[0035] S01: During operation, the intelligent controller monitors the status data of the high-frequency silicon carbide switching power supply module affected by electromagnetic interference;

[0036] S02: If the status data is lower than the set safety threshold, the lifting unit is controlled to operate to drive the front shell to rise to the first height. When the front shell is at the first height, the metal guide pillars are still located in the corresponding metal guide sleeves. The first electromagnetic shielding coating, the multiple metal guide pillars, the multiple metal guide sleeves, and the second electromagnetic shielding coating form an electromagnetic shielding net for electromagnetic shielding protection, and a heat dissipation gap is formed between the front shell and the bottom shell.

[0037] S03: If the status data is higher than a set safety threshold and lower than a set danger threshold, the lifting unit is controlled to drive the front shell to rise and fall to a second height that can restore the status data to a level lower than the set safety threshold, and the second height is lower than the first height; the first electromagnetic shielding coating, the plurality of metal guide pillars, the plurality of metal guide sleeves, and the second electromagnetic shielding coating form an electromagnetic shielding net for electromagnetic shielding protection, and a heat dissipation gap is formed between the front shell and the bottom shell;

[0038] S04: If the status data is higher than the set danger threshold, the lifting unit is controlled to operate and drive the top shell and the bottom shell to close;

[0039] By applying the methods of this application, the size of the heat dissipation gap can be effectively adjusted based on the set safety threshold and danger threshold, thereby balancing the electromagnetic shielding protection and heat dissipation requirements and improving the adaptability of the product; it is especially suitable for applications in scenarios where the electromagnetic interference intensity may change, such as in a computer room with a relatively dense equipment density.

[0040] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. An intelligent high-frequency silicon carbide switching power supply electromagnetic interference suppression device, comprising a shielding shell and a circuit board disposed in the shielding shell, wherein the circuit board is provided with a high-frequency silicon carbide switching power supply module, characterized in that: The shielding shell includes a bottom shell and a front shell, the inner surface of the bottom shell is provided with a first electromagnetic shielding coating, and the inner surface of the front shell is provided with a second electromagnetic shielding coating; the upper surface edge of the bottom shell is provided with a plurality of metal guide pillars, and the lower surface edge of the front shell is provided with a metal guide sleeve that cooperates with the plurality of the metal guide pillars; the metal guide pillars are electrically connected to the first electromagnetic shielding coating, and the metal guide sleeves are electrically connected to the second electromagnetic shielding coating; the bottom shell is provided with a mounting seat for installing the circuit board, a lifting unit for driving the front shell to rise and fall, and an intelligent controller, the intelligent controller monitors the status data of the high-frequency silicon carbide switching power supply module affected by electromagnetic interference, and controls the operation of the lifting unit based on the obtained status data.

2. The intelligent high-frequency silicon carbide switching power supply electromagnetic interference suppression device according to claim 1 is characterized in that: The mounting seat is made of metal material and has an L-shaped cross-section. A hollow groove is provided in the middle of the surface where the horizontal edge of the mounting seat is located; the circuit board is installed directly above the hollow groove; the intelligent controller is installed on the surface where the longitudinal edge of the mounting seat is located.

3. The intelligent high-frequency silicon carbide switching power supply electromagnetic interference suppression device according to claim 2, characterized in that: The lifting unit includes a first motor; the first motor is installed on the surface where the longitudinal edge of the mounting seat is located, and the movable end of the first motor is provided with a fan blade; the lifting unit also includes a cam and a transverse movement unit that drives the cam to move transversely, and the transverse movement unit is provided on the surface shell.

4. The intelligent high-frequency silicon carbide switching power supply electromagnetic interference suppression device according to claim 3, characterized in that: The outer edge of the fan blade is provided with a first arc surface that is convex outward, and the lower surface edge of the cam is provided with a second arc surface that cooperates with the first arc surface.

5. The intelligent high-frequency silicon carbide switching power supply electromagnetic interference suppression device according to claim 3, characterized in that: The transverse movement unit includes a screw rod and a second motor that drives the screw rod; the screw rod and a soft cable plug electrically connected to the second motor are provided on the surface shell, and a socket that cooperates with the soft cable plug is provided on the mounting seat, and the socket is electrically connected to the intelligent controller.

6. The intelligent high-frequency silicon carbide switching power supply electromagnetic interference suppression device according to claim 2, characterized in that: A plurality of reset springs are provided at the upper end of the mounting seat, a screw is provided at the upper end of the reset spring, a countersunk hole is provided on the surface shell, a through hole for the screw to pass through is provided on the bottom surface of the countersunk hole, and a nut is provided in the countersunk hole to cooperate with the screw to lock.

7. The intelligent high-frequency silicon carbide switching power supply electromagnetic interference suppression device according to claim 6, characterized in that: The rod body of the screw is provided with a spline, and the inner wall of the through hole is provided with a keyway matched with the spline.

8. A method for suppressing electromagnetic interference of an intelligent high-frequency silicon carbide switching power supply, using the intelligent high-frequency silicon carbide switching power supply electromagnetic interference suppression device according to any one of claims 1 to 7, characterized in that: The method comprises the steps of: During operation, the intelligent controller monitors the status data of the high-frequency silicon carbide switching power supply module affected by electromagnetic interference; If the status data is lower than the set safety threshold, the lifting unit is controlled to operate and drive the front shell to rise to the first height. When the front shell is at the first height, the metal guide pillars are still located in the corresponding metal guide sleeves. The first electromagnetic shielding coating, the multiple metal guide pillars, the multiple metal guide sleeves, and the second electromagnetic shielding coating constitute an electromagnetic shielding net for electromagnetic shielding protection, and a heat dissipation gap is formed between the front shell and the bottom shell. If the status data is higher than a set safety threshold and lower than a set danger threshold, the lifting unit is controlled to drive the surface shell to rise and fall to a second height that can restore the status data to a level lower than the set safety threshold, and the value of the second height is lower than the value of the first height; the first electromagnetic shielding coating, the plurality of metal guide pillars, the plurality of metal guide sleeves, and the second electromagnetic shielding coating form an electromagnetic shielding net for electromagnetic shielding protection, and a heat dissipation gap is formed between the surface shell and the bottom shell; If the status data is higher than the set danger threshold, the lifting unit is controlled to operate and drive the top shell and the bottom shell to close.

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