Silicon carbide power device and aircraft engine control unit thereof

Abstract

The application discloses a silicon carbide power device and an airplane engine control unit, relates to the field of silicon carbide power devices, and comprises a silicon carbide power device body, a plurality of pins are installed at one end of the silicon carbide power device body, and a protection assembly for protecting the pins is arranged on the silicon carbide power device body; the protection assembly comprises a protection shell sleeved on the silicon carbide power device body; through cooperation of the protection shell, the bidirectional screw rod and the abutting block and other structures, the protection shell is sleeved on the silicon carbide power device body in use, the pins are located in the protection shell, then the bidirectional screw rod is rotated, the abutting block is abutted against the side wall of the silicon carbide power device body, and the protection shell is fixed; the pins are protected through the protection shell; when the silicon carbide power device body is disassembled, the bidirectional screw rod is reversely rotated, and the abutting block is loosened, so that the problem that the side plate of the silicon carbide power device body is difficult to disassemble in use and may cause obstruction and reduction of applicability is avoided as much as possible.

Description

Technical Field

[0001] This application relates to the field of silicon carbide power devices, and in particular to silicon carbide power devices and their aircraft engine control units. Background Technology

[0002] Silicon carbide power devices are a new type of semiconductor device. Silicon carbide is a semiconductor material with excellent properties such as high thermal conductivity, high breakdown voltage, and high electron mobility, making it suitable for manufacturing power devices. Silicon carbide power devices include silicon carbide metal oxide semiconductor field-effect transistors, silicon carbide junction barrier Schottky diodes, and silicon carbide Schottky barrier diodes.

[0003] Utility model patent CN222721724U discloses a silicon carbide power device terminal structure, including a silicon carbide power device terminal body. The silicon carbide power device terminal body is provided with multiple pins. Two side plates are fixedly installed on both sides of the silicon carbide power device terminal body. A side groove is opened on one side of the side plate. A lower positioning groove and an upper positioning groove are respectively opened in the side groove. A slider is movably installed in the side groove. The same protective frame is fixedly installed on the side of the two sliders that are far apart from each other. A movable groove is opened between the slider and the protective frame. A positioning plate is installed in the movable groove through a spring mechanism.

[0004] One of the aforementioned silicon carbide power device terminal structures protects the pins by raising and lowering the protective frame on the silicon carbide power device terminal body, reducing the occurrence of pin breakage due to external forces. However, the sliding of the protective frame on the silicon carbide power device terminal body requires the fixed installation of a side plate on the side wall of the silicon carbide power device terminal body. During use, it is difficult to disassemble the side plate, which may cause obstruction and reduce applicability. Utility Model Content

[0005] To address the aforementioned issues, this application provides silicon carbide power devices and their aircraft engine control units.

[0006] The silicon carbide power device and its aircraft engine control unit provided in this application adopt the following technical solution:

[0007] A silicon carbide power device includes a silicon carbide power device body. One end of the silicon carbide power device body is equipped with multiple pins. The silicon carbide power device body is provided with a protective assembly for protecting the pins. The protective assembly includes a protective shell fitted onto the silicon carbide power device body. The pins are located inside the protective shell. A fixing block is fixedly connected to the bottom end of one side wall of the protective shell. A bidirectional screw is provided inside the fixing block. Both ends of the bidirectional screw pass through the fixing block and form a rotatable connection. Movable plates are provided on the two side walls adjacent to the fixing block of the protective shell. A connecting block is fixedly connected to one end of each movable plate. The connecting block is threaded to both ends of the bidirectional screw. An abutment block is fixedly connected to one side wall of the movable plate. The end of the abutment block away from the movable plate passes through the protective shell and abuts against the side wall of the silicon carbide power device body.

[0008] By adopting the above technical solution, during use, the protective shell is fitted onto the silicon carbide power device body, with the pins located inside the protective shell. Then, by rotating the bidirectional screw, the two connecting blocks are brought closer together, causing the abutment blocks to abut against the side wall of the silicon carbide power device body, thus fixing the protective shell and protecting the pins. When the pins need to be used, the protective shell can be removed by rotating the bidirectional screw in the opposite direction to loosen the abutment blocks. This minimizes the problem of difficulty in disassembling the side plate of the silicon carbide power device terminal body during use, which may cause obstruction and reduce applicability.

[0009] Preferably, a U-shaped limiting plate is fixedly connected to the inner wall of the protective shell, the lower surface of the U-shaped limiting plate is in contact with the top of the silicon carbide power device body, and the distance between the upper surface of the U-shaped limiting plate and the inner top wall of the protective shell is greater than the length of the pin.

[0010] By adopting the above technical solution, when the protective shell is fitted onto the silicon carbide power device body, the lower surface of the U-shaped limiting plate is in contact with the top of the silicon carbide power device body, which restricts the position of the protective shell on the silicon carbide power device body and prevents the inner top wall of the protective shell from contacting the pin tip and causing damage to the pin.

[0011] Preferably, a loop-shaped positioning sleeve is fixedly connected to the lower surface of the loop-shaped limiting plate, and the bottom end of the loop-shaped positioning sleeve extends out of the protective shell and is adapted to the silicon carbide power device body.

[0012] By adopting the above technical solution, when the protective shell is put on the silicon carbide power device body, the loop-shaped positioning sleeve is first put on the silicon carbide power device body to prevent the protective shell from shaking when it is directly put on the silicon carbide power device body, which would cause the pins to collide with the loop-shaped limiting plate and damage the pins.

[0013] Preferably, the end of the abutment block away from the moving plate passes through the U-shaped positioning sleeve and is fixedly connected with an elastic rubber pad.

[0014] By adopting the above technical solution, when the contact block comes into contact with the silicon carbide power device body, the elastic rubber pad first comes into contact with the silicon carbide power device body. Under pressure, the elastic rubber pad deforms and is squeezed, which can play a buffering role and prevent the contact block from directly contacting the silicon carbide power device body and causing damage to the silicon carbide power device body.

[0015] Preferably, positioning rods are fixedly connected to both side walls of the protective shell on one side of the abutment block, and the end of the positioning rod away from the protective shell passes through the movable plate and forms a sliding arrangement.

[0016] By adopting the above technical solution, the stability of the moving plate during movement can be improved by using the positioning rod, preventing the moving plate from shaking.

[0017] Preferably, one end of the bidirectional screw is fixedly connected to a rotating disk for driving the bidirectional screw to rotate.

[0018] By adopting the above technical solution, the bidirectional screw can be easily rotated by the rotating disk, so that the connecting block drives the moving plate to move.

[0019] This utility model also proposes an aircraft engine control unit, which includes any of the silicon carbide power devices described above.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] 1. This application utilizes the cooperative arrangement of a protective shell, a bidirectional screw, and abutment blocks. In use, the protective shell is fitted onto the silicon carbide power device body, with the pins located inside the shell. Then, by rotating the bidirectional screw, two connecting blocks are brought closer together, causing the abutment blocks to abut against the side wall of the silicon carbide power device body, thus fixing the protective shell and protecting the pins. When the pins need to be used, the protective shell can be removed by rotating the bidirectional screw in the opposite direction to loosen the abutment blocks. This minimizes the problem of difficulty in disassembling the side plate of the silicon carbide power device terminal body during use, which could obstruct the device and reduce its applicability.

[0022] 2. When the protective shell is placed on the silicon carbide power device body, the loop-shaped positioning sleeve is first placed on the silicon carbide power device body to prevent the protective shell from shaking when it is directly placed on the silicon carbide power device body, which could cause the pins to collide with the loop-shaped limiting plate and damage the pins. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the silicon carbide power device according to an embodiment of this application;

[0024] Figure 2 This is a schematic diagram illustrating the internal structure of the protective shell, representing a key embodiment of this application.

[0025] Figure 3 The embodiments of this application mainly embody Figure 2 A schematic diagram of the enlarged structure of region A in the middle.

[0026] Reference numerals in the attached drawings: 1. Silicon carbide power device body; 2. Pin; 3. Protective shell; 4. Fixing block; 5. Bidirectional screw; 6. Moving plate; 7. Connecting block; 8. Abutting block; 9. U-shaped limiting plate; 10. U-shaped positioning sleeve; 11. Elastic rubber pad; 12. Positioning rod; 13. Rotating disk. Detailed Implementation

[0027] The following is in conjunction with the appendix Figures 1-3 This application will be described in further detail.

[0028] This application discloses silicon carbide power devices and their aircraft engine control units.

[0029] Reference Figure 1 , Figure 2 and Figure 3 The silicon carbide power device includes a silicon carbide power device body 1, with multiple pins 2 installed at one end of the silicon carbide power device body 1. The silicon carbide power device body 1 is provided with a protective component for protecting the pins 2. The protective component includes a protective shell 3, a fixing block 4, a bidirectional screw 5, a moving plate 6, a connecting block 7, and an abutment block 8.

[0030] The protective shell 3 is fitted onto the silicon carbide power device body 1. The pin 2 is located inside the protective shell 3. The fixing block 4 is fixedly connected to the bottom end of one side wall of the protective shell 3. The bidirectional screw 5 is located inside the fixing block 4 and its two ends pass through the fixing block 4 to form a rotatable connection. Two movable plates 6 are provided, located on the two side walls adjacent to the protective shell 3 and the fixing block 4, respectively. Two connecting blocks 7 are provided, fixedly connected to one end of the movable plate 6, and the connecting blocks 7 are threaded to both ends of the bidirectional screw 5, respectively. Two abutting blocks 8 are provided, fixedly connected to one side wall of the movable plate 6, and the end of the abutting block 8 away from the movable plate 6 passes through the protective shell 3 and abuts against the side wall of the silicon carbide power device body 1.

[0031] Reference Figure 1 and Figure 2A U-shaped limiting plate 9 is fixedly connected to the inner wall of the protective shell 3. The lower surface of the U-shaped limiting plate 9 is in contact with the top of the silicon carbide power device body 1. The distance between the upper surface of the U-shaped limiting plate 9 and the inner top wall of the protective shell 3 is greater than the length of the pin 2. When the protective shell 3 is put on the silicon carbide power device body 1, the lower surface of the U-shaped limiting plate 9 is in contact with the top of the silicon carbide power device body 1, which restricts the position of the protective shell 3 on the silicon carbide power device body 1 and prevents the inner top wall of the protective shell 3 from contacting the top of the pin 2 and causing damage to the pin 2.

[0032] Reference Figure 1 and Figure 2 A loop-shaped positioning sleeve 10 is fixedly connected to the lower surface of the loop-shaped limiting plate 9. The bottom end of the loop-shaped positioning sleeve 10 extends out to form a protective shell 3, which is adapted to the silicon carbide power device body 1. When the protective shell 3 is put on the silicon carbide power device body 1, the loop-shaped positioning sleeve 10 is first put on the silicon carbide power device body 1 to prevent the protective shell 3 from shaking when it is directly put on the silicon carbide power device body 1, causing the pin 2 to collide with the loop-shaped limiting plate 9 and resulting in damage to the pin 2.

[0033] Reference Figure 2 and Figure 3 The end of the abutment block 8 away from the moving plate 6 is connected to the U-shaped positioning sleeve 10 and a fixed elastic rubber pad 11. Through the elastic rubber pad 11, when the abutment block 8 abuts with the silicon carbide power device body 1, the elastic rubber pad 11 first abuts with the silicon carbide power device body 1. Under pressure, the elastic rubber pad 11 deforms and is squeezed, which can play a buffering role and prevent the abutment block 8 from directly abutting with the silicon carbide power device body 1 and causing damage to the silicon carbide power device body 1.

[0034] Reference Figure 1 Positioning rods 12 are fixedly connected to both sides of the protective shell 3 on one side of the abutment block 8. The end of the positioning rod 12 away from the protective shell 3 passes through the moving plate 6 and forms a sliding setting. The positioning rod 12 can improve the stability of the moving plate 6 when it moves and prevent the moving plate 6 from shaking.

[0035] Reference Figure 1 One end of the bidirectional screw 5 is fixedly connected to a rotating disk 13 for driving the bidirectional screw 5 to rotate. The rotating disk 13 facilitates the rotation of the bidirectional screw 5, so that the connecting block 7 drives the moving plate 6 to move.

[0036] This utility model also proposes an aircraft engine control unit, which includes a silicon carbide power device as described above. The silicon carbide power device is the core power device of the engine control unit and is existing technology, so it will not be described in detail here.

[0037] The implementation principle of the silicon carbide power device and its aircraft engine control unit in this application embodiment is as follows: In use, firstly, the loop-shaped positioning sleeve 10 is fitted onto the silicon carbide power device body 1 to position the protective shell 3, preventing it from shaking when directly fitted onto the silicon carbide power device body 1, thus avoiding collision between the pin 2 and the protective shell 3. Simultaneously, the lower surface of the loop-shaped limiting plate 9 adheres to the top of the silicon carbide power device body 1, restricting the position of the protective shell 3 on the silicon carbide power device body 1 and preventing the inner top wall of the protective shell 3 from colliding with the pin 2. The contact at the end causes damage to pin 2. Then, by rotating the bidirectional screw 5, the two connecting blocks 7 are driven to move closer to each other, so that the abutment block 8 abuts against the side wall of the silicon carbide power device body 1, fixing the protective shell 3. The protective shell 3 protects the pin 2. When the pin 2 needs to be used, the protective shell 3 can be removed by rotating the bidirectional screw 5 in the opposite direction to loosen the abutment block 8. This avoids the problem that the side plate of the silicon carbide power device terminal body is difficult to remove when in use, which may cause obstruction and reduce applicability.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A silicon carbide power device, comprising a silicon carbide power device body (1), wherein a plurality of pins (2) are mounted on one end of the silicon carbide power device body (1), and a protective component for protecting the pins (2) is provided on the silicon carbide power device body (1), characterized in that: The protective assembly includes a protective shell (3) fitted onto the silicon carbide power device body (1), the pin (2) being located inside the protective shell (3), a fixing block (4) being fixedly connected to the bottom of one side wall of the protective shell (3), a bidirectional screw (5) being provided inside the fixing block (4), the two ends of the bidirectional screw (5) passing through the fixing block (4) and forming a rotatable connection, a movable plate (6) being provided on the two side walls adjacent to the fixing block (4) of the protective shell (3), a connecting block (7) being fixedly connected to one end of the movable plate (6), the connecting block (7) being threaded to both ends of the bidirectional screw (5), an abutment block (8) being fixedly connected to one side wall of the movable plate (6), the end of the abutment block (8) away from the movable plate (6) passing through the protective shell (3) and abutting against the side wall of the silicon carbide power device body (1).

2. The silicon carbide power device according to claim 1, characterized in that: The inner wall of the protective shell (3) is fixedly connected to a U-shaped limiting plate (9). The lower surface of the U-shaped limiting plate (9) is in contact with the top of the silicon carbide power device body (1). The distance between the upper surface of the U-shaped limiting plate (9) and the inner top wall of the protective shell (3) is greater than the length of the pin (2).

3. The silicon carbide power device according to claim 2, characterized in that: The lower surface of the loop-shaped limiting plate (9) is fixedly connected to a loop-shaped positioning sleeve (10), and the bottom end of the loop-shaped positioning sleeve (10) extends out of the protective shell (3) and is adapted to the silicon carbide power device body (1).

4. The silicon carbide power device according to claim 3, characterized in that: The end of the abutment block (8) away from the moving plate (6) passes through the U-shaped positioning sleeve (10) and is fixedly connected to an elastic rubber pad (11).

5. The silicon carbide power device according to claim 4, characterized in that: The protective shell (3) has a positioning rod (12) fixedly connected to each side wall on one side of the abutment block (8). The end of the positioning rod (12) away from the protective shell (3) passes through the moving plate (6) and forms a sliding arrangement.

6. The silicon carbide power device according to claim 5, characterized in that: One end of the bidirectional screw (5) is fixedly connected to a rotating disk (13) for driving the bidirectional screw (5) to rotate.

7. An aircraft engine control unit, characterized in that: The engine control unit includes the silicon carbide power device as described in any one of claims 1-6.

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