Silicon carbide power device and medical power supply thereof

Abstract

The utility model discloses a silicon carbide power device and a medical power supply thereof, and relates to the technical field of power electronics, and the medical power supply comprises a box body, the upper end of the box body is provided with a cover plate, the lower inner wall of the box body is fixedly provided with a carrier plate, the upper end of the carrier plate is provided with a circuit board, and the upper end of the carrier plate is provided with a plate groove matched with the circuit board for use. According to the silicon carbide power device and the medical power supply thereof provided by the invention, the pins are convenient to bend through bending, so that the welding work of the pins and the circuit board is greatly facilitated, the installation efficiency is improved, the cost is reduced, and the service life of the silicon carbide power device and the medical power supply thereof is prolonged. And the protective shell can effectively protect the pins, so that normal and safe operation of the medical equipment is ensured, internal elements can be protected, an output pipeline can be pressed to prevent shaking and displacement, stable output of electric energy and reliable connection are ensured, and the stability, reliability and use convenience of the medical power supply are improved.

Description

Technical Field

[0001] This application relates to the field of power electronics technology, in particular to silicon carbide power devices and their medical power supplies. Background Art

[0002] Silicon carbide power devices have advantages such as good reverse recovery characteristics, high breakdown voltage, reliable operation at high temperatures, fast switching, and low conduction loss. They work based on the Schottky barrier rectification principle and are applied in fields such as power supplies, new energy, and industry. However, they face challenges such as high costs (due to difficult preparation processes and low yield rates), an incomplete industrial chain, and the need to verify reliability in new scenarios.

[0003] After checking the publication number: CN206460960U, a silicon carbide power device is disclosed. In this technology, "it is realized through an NPN transistor. The NPN transistor includes three N-type source-drain implants and one P-type source-drain implant. The two N-type source-drain implants are respectively used as two collector regions, closely adjacent to the P-type source-drain implant serving as the base region, and are short-circuited by metal to serve as the anode of the silicon carbide power device; the third N-type source-drain implant serves as the emitter region, that is, the cathode of the silicon carbide power device, etc. Technical solutions have, compared with the prior art, a smaller distance between the N-type source-drain implant of the anode and the N-type source-drain implant of the cathode, reducing the lateral N-type well resistance; at the same time, compared with the prior art, an additional N-type source-drain implant is added on the other side close to the P-type source-drain implant, increasing a lateral NPN effect, enabling more current to flow on the surface, reducing the current component flowing through the N-type well resistance, and avoiding the forward biasing of the junction from the P-type body region to the N-type well region; without the process steps and costs of the buried layer and epitaxial layer added in the prior art, the technical effect of reducing leakage can be achieved."

[0004] Regarding the above related technologies, the inventor believes that in the aspect of connecting the box body and the cover plate to form a closed space in the existing medical power supply, there are problems of insufficient sealing performance and lack of a precise positioning structure, resulting in easy entry of dust and moisture, which affects the performance and lifespan of components; in terms of fixing the output pipeline, the existing fixing methods are unreliable. For example, cable ties or tapes are prone to aging and loosening, causing the pipeline to shake and shift, and it is difficult to adjust and replace them. For example, the fixing methods of glue or welding are cumbersome and easily damage components. These deficiencies affect the performance of the medical power supply. Moreover, for most existing silicon carbide power devices, the pins are not easy to bend and the protection effect on the pins is not good. The existing pin design does not consider the convenience of bending, resulting in difficulty in adjusting the shape of the pins to adapt to the welding points of the circuit board during welding, increasing the difficulty and time cost of welding, reducing production efficiency. At the same time, some silicon carbide power devices are simply wrapped with plastic films, which cannot effectively prevent collisions, and the pins may be bent or broken due to jolting during transportation. Therefore, silicon carbide power devices and their medical power supplies are needed to solve the above problems. Summary of the Utility Model

[0005] The purpose of this application is to provide a silicon carbide power device and its medical power supply to improve the problems of poor protection of internal components by the medical power supply, inconvenient fixing of the output pipeline, inconvenient bending of the pins of the silicon carbide power device, and poor protection effect on the pins.

[0006] The silicon carbide power device and its medical power supply provided by this application adopt the following technical solutions:

[0007] A silicon carbide power device and its medical power supply, including a box body, a cover plate is provided at the upper end of the box body, a carrier plate is fixedly provided on the lower inner wall of the box body, a circuit board is provided at the upper end of the carrier plate, a board groove for cooperating with the circuit board is opened at the upper end of the carrier plate, two battery components are provided on both sides of the upper end of the carrier plate, and output pipelines are fixedly provided at the inner ends of the battery components.

[0008] By adopting the above technical solutions, the design of the carrier plate stabilizes the circuit board, the installation and connection of the battery components ensure reliable power output, and the silicon carbide power device can realize functions such as rectification and voltage regulation to meet the power consumption requirements of medical equipment.

[0009] Optionally, a lower clamping member is fixedly provided on one side of the lower inner wall of the box body, an upper clamping member is provided above the lower clamping member, multiple output pipelines are all located between the upper clamping member and the lower clamping member, support rods are fixedly provided at both ends of the upper clamping member, limiting grooves for cooperating with the support rods are opened on both inner walls of the box body, four springs are fixedly provided at the upper end of the upper clamping member, an upper plate is fixedly provided at the upper ends of the four springs, both ends of the upper plate respectively penetrate through the two limiting grooves and are fixedly provided with limiting blocks, and the limiting blocks are connected to the box body through bolts in cooperation.

[0010] By adopting the above technical solutions, the lower clamping member and the upper clamping member cooperate to tightly clamp the output pipeline to prevent shaking and displacement, ensuring stable power output and reliable connection.

[0011] Optionally, positioning tubes are fixedly provided on both sides of the lower inner wall of the box body, inserting columns are fixedly provided on both sides of the lower end of the cover plate, the lower outer surface of the inserting column is sleeved and connected with the corresponding positioning tube, four connecting blocks are fixedly provided on the outer surfaces of the box body and the cover plate, and two vertically corresponding connecting blocks are connected through bolts in cooperation.

[0012] By adopting the above technical solutions, the cover plate is convenient to cover and can protect the internal components.

[0013] Optionally, two pins are fixedly provided at the lower end of the battery component, and slots for cooperating with the pins are opened on the upper sides of both ends of the carrier plate.

[0014] By adopting the above technical solutions, it is convenient to install the battery component and the installation is firm.

[0015] Optionally, the four springs are distributed in a rectangle, and bolt slots for cooperating with bolts are provided at both ends of the box body.

[0016] By adopting the above technical solution, the effect of elastic clamping can be made more uniform, and more spacing options are available.

[0017] A silicon carbide power device includes a silicon carbide power device body. Two pins are fixedly provided at the lower end of the silicon carbide power device body, and the two silicon carbide power device bodies are installed at the upper end of a circuit board.

[0018] By adopting the above technical solution, the structure of the silicon carbide power device is formed.

[0019] Optionally, a protective shell is provided at the lower end of the silicon carbide power device body. The pins are located inside the protective shell. A clamping block is fixedly provided on the upper side of one end of the protective shell. Two clamping columns are fixedly provided on the lower side of one end of the outer surface of the silicon carbide power device body, and the two clamping columns are connected through the clamping block.

[0020] By adopting the above technical solution, the pins can be effectively protected from damage by external factors such as physical collision, dust, and moisture during transportation, storage, and installation.

[0021] Optionally, bending grooves are provided on both sides of the outer surface of the pins.

[0022] By adopting the above technical solution, it is convenient to bend the pins, which greatly facilitates the soldering work of the pins to the circuit board and improves the efficiency.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. In the present application, a closed space is formed by the connection of the box body and the cover plate to protect the internal components from dust and moisture. The lower clamping member and the upper clamping member cooperate to tightly press the output pipeline to prevent shaking and displacement, ensuring stable power output and reliable connection, and facilitating the adjustment or replacement of the output pipeline, thus improving the stability, reliability, and usability of the medical power supply as a whole.

[0025] 2. In the present application, it is convenient to bend the pins through bending, which greatly facilitates the soldering work of the pins to the circuit board and improves the efficiency. The protective shell can effectively protect the pins from damage by external factors such as physical collision, dust, and moisture during transportation, storage, and installation, ensuring the normal and safe operation of the medical device. Description of the Drawings

[0026] Figure 1 It is a schematic diagram of the structure of the silicon carbide power device of the present application.

[0027] Figure 2It is an exploded view of the cross-sectional structure of the protective case in the silicon carbide power device of the present application.

[0028] Figure 3 It is a schematic diagram of the structure of the medical power supply of the present application.

[0029] Figure 4 It is an exploded view of the cross-sectional structure of the cover plate and one of the battery components in the medical power supply of the present application.

[0030] In the figure, 1 is the silicon carbide power device body; 11 is the pin; 12 is the bending groove; 2 is the protective case; 21 is the clamping block; 22 is the clamping post; 3 is the box body; 31 is the cover plate; 32 is the connecting block; 33 is the positioning tube; 34 is the inserting post; 4 is the carrier plate; 5 is the circuit board; 51 is the board groove; 6 is the battery component; 61 is the output pipeline; 62 is the pin; 63 is the slot; 7 is the lower clamping part; 71 is the upper clamping part; 72 is the support rod; 73 is the limiting groove; 74 is the spring; 75 is the upper plate; 76 is the limiting block. Specific Embodiments

[0031] The following further describes the present application in detail with reference to the attached Figure 1 - attached Figure 4 drawings.

[0032] Embodiment 1

[0033] Referring to Figure 1-2 , the silicon carbide power device and its medical power supply include a box body 3. A cover plate 31 is provided at the upper end of the box body 3. Positioning tubes 33 are welded on both sides of the lower inner wall of the box body 3. Inserting posts 34 are welded on both sides of the lower end of the cover plate 31. The lower outer surface of the inserting post 34 is sleeved and connected with the corresponding positioning tube 33. Four connecting blocks 32 are welded on the outer surfaces of the box body 3 and the cover plate 31, and the two vertically corresponding connecting blocks 32 are connected by bolts. The cover plate 31 at the upper end of the box body 3 is initially positioned by sleeving the positioning tubes 33 on both sides of the lower inner wall of the box body 3 with the inserting posts 34 on both sides of the lower end of the cover plate 31, and then the connecting blocks 32 on the outer surfaces of the box body 3 and the cover plate 31 are connected by bolts to tightly fix the box body 3 and the cover plate 31 to form a closed space to protect the internal components. Its function is to provide a safe and stable environment for the internal circuit components, etc., and prevent external factors such as dust and moisture from affecting the normal operation of the internal components.

[0034] Referring to Figure 1-2, a carrier plate 4 is welded to the lower inner wall of the box body 3. A circuit board 5 is provided at the upper end of the carrier plate 4. A board slot 51 for use with the circuit board 5 is provided at the upper end of the carrier plate 4. Two battery components 6 are provided on both sides of the upper end of the carrier plate 4. An output pipeline 61 is welded to the inner end of each battery component 6. Two pins 62 are welded to the lower end of the battery component 6. Slots 63 for use with the pins 62 are provided on the upper sides of both ends of the carrier plate 4. The carrier plate 4 is welded to the lower inner wall of the box body 3. The board slot 51 at the upper end of the carrier plate 4 is used to place the circuit board 5. This design enables the circuit board 5 to be stably installed on the carrier plate 4, avoiding displacement of the circuit board 5 due to vibration or other reasons during the operation of the power supply, and ensuring the stability of the circuit connection. The battery components 6 on both sides of the upper end of the carrier plate 4 are connected to the slots 63 on the upper sides of both ends of the carrier plate 4 through the pins 62 at their lower ends, realizing the fixation of the battery components 6 on the carrier plate 4. The output pipelines 61 at the inner ends of the battery components 6 are used to output electric energy. The battery components 6, as part of the power supply, provide an energy source for the entire medical power supply. Their stable installation and connection methods ensure the reliable output of electric energy. Two silicon carbide power device bodies 1 are installed at the upper end of the circuit board 5. In the medical power supply circuit, the silicon carbide power device may perform functions such as rectification, voltage stabilization, or other related circuit functions. For example, rectifying the input alternating current to meet the demand for direct current of medical equipment, or stabilizing the voltage to ensure the normal operation of medical equipment, etc.

[0035] Refer to Figure 1-2, on one side of the lower inner wall of the box body 3, a lower clamping member 7 is welded. Above the lower clamping member 7, there is an upper clamping member 71. A plurality of output pipelines 61 are all located between the upper clamping member 71 and the lower clamping member 7. At both ends of the upper clamping member 71, support rods 72 are welded. On both inner walls of the box body 3, limiting grooves 73 for cooperating with the support rods 72 are provided. At the upper end of the upper clamping member 71, four springs 74 are welded. At the upper ends of the four springs 74, an upper plate 75 is welded. The two ends of the upper plate 75 respectively penetrate through the two limiting grooves 73 and are welded with limit blocks 76. The limit blocks 76 are connected to the box body 3 by bolts in a matching manner. The lower clamping member 7 on one side of the lower inner wall of the box body 3 cooperates with the upper clamping member 71 above it, and a plurality of output pipelines 61 are located between the upper clamping member 71 and the lower clamping member 7. The support rods 72 at both ends of the upper clamping member 71 move in the limiting grooves 73 on both inner walls of the box body 3. The four springs 74 are distributed in a rectangle. At both ends of the box body 3, a plurality of bolt grooves for cooperating with bolts are provided. The four springs 74 welded to the upper end of the upper clamping member 71 are distributed in a rectangle. The two ends of the upper plate 75 at the upper ends of the springs 74 penetrate through the limiting grooves 73 and are welded with limit blocks 76. When it is necessary to fix the output pipeline 61, the limit block 76 is connected to the box body 3 by bolts. At this time, the upper clamping member 71 presses the output pipeline 61 downward under the action of the springs 74, so that it is fixed between the upper and lower clamping members, preventing the output pipeline 61 from shaking or shifting during use, and ensuring the stable output of electric energy and the reliability of the connection. When it is necessary to adjust or replace the output pipeline 61, the bolts can be loosened, and the upper clamping member 71 moves upward under the elastic action of the springs 74, facilitating the operation.

[0036] Embodiment 2

[0037] The difference between this embodiment and Embodiment 1 is that:

[0038] Silicon carbide power device, referring to Figure 3-4 , including a silicon carbide power device body 1. At the lower end of the silicon carbide power device body 1, two pins 11 are provided. Two silicon carbide power device bodies 1 are installed at the upper end of the circuit board 5. On both sides of the outer surface of the pins 11, bending grooves 12 are provided. The two pins 11 at the lower end of the silicon carbide power device body 1 are used for electrical connection with the circuit board 5. The bending grooves 12 on both sides of the outer surface of the pins 11 facilitate the bending of the pins 11 and contribute to the convenient welding of the pins 11 to the circuit board 5.

[0039] Referring to Figure 4, a protective case 2 is provided at the lower end of the silicon carbide power device body 1. The pin 11 is located inside the protective case 2. A clamping block 21 is welded on the upper side of one end of the protective case 2. Two clamping columns 22 are welded on the lower side of one end of the outer surface of the silicon carbide power device body 1. And the two clamping columns 22 are connected through the clamping block 21. The protective case 2 at the lower end of the silicon carbide power device body 1 is used to protect the pin 11. The clamping block 21 on the upper side of one end of the protective case 2 is connected through the two clamping columns 22 on the lower side of one end of the outer surface of the silicon carbide power device body 1, so that the protective case 2 is firmly installed at the lower end of the silicon carbide power device body 1, and can protect the pin 11 of the silicon carbide power device before installation, reducing the damage to the silicon carbide power device from the outside.

[0040] The implementation principle of the embodiments of this application is as follows: The cover plate 31 at the upper end of the box body 3 is initially positioned by sleeving the positioning tubes 33 on both sides of the lower inner wall of the box body 3 with the insertion posts 34 on both sides of the lower end of the cover plate 31. Then, the connecting blocks 32 on the outer surfaces of the box body 3 and the cover plate 31 are connected by bolts, so that the box body 3 and the cover plate 31 are tightly fixed to form a closed space to protect the internal components. Its function is to provide a safe and stable environment for internal circuit components, etc., to prevent external factors such as dust and moisture from affecting the normal operation of internal components. The plate groove 51 at the upper end of the carrier plate 4 is used to place the circuit board 5. This design enables the circuit board 5 to be stably installed on the carrier plate 4, avoiding the displacement of the circuit board 5 due to vibration or other reasons during the operation of the power supply, and ensuring the stability of the circuit connection. The battery components 6 on both sides of the upper end of the carrier plate 4 are connected to the slots 63 on the upper sides of both ends of the carrier plate 4 through the pins 62 at their lower ends, realizing the fixation of the battery components 6 on the carrier plate 4. The output pipeline 61 at the inner end of the battery component 6 is used to output electric energy. The battery component 6, as part of the power supply, provides an energy source for the entire medical power supply. Its stable installation and connection method ensure the reliable output of electric energy. The two silicon carbide power device bodies 1 are installed at the upper end of the circuit board 5. In the medical power supply circuit, the silicon carbide power device may perform functions such as rectification, voltage stabilization, or other related circuit functions. For example, rectifying the input alternating current to meet the demand for direct current of medical equipment, or stabilizing the voltage to ensure the normal operation of medical equipment, etc. When it is necessary to fix the output pipeline 61, the limiting block 76 is connected to the box body 3 through bolts. At this time, the upper clamping member 71 presses the output pipeline 61 downward under the action of the spring 74, fixing it between the upper and lower clamping members, preventing the output pipeline 61 from shaking or shifting during use, and ensuring the stable output of electric energy and the reliability of the connection. When it is necessary to adjust or replace the output pipeline 61, the bolts can be loosened, and the upper clamping member 71 moves upward under the elastic action of the spring 74, facilitating the operation. The two pins 11 at the lower end of the silicon carbide power device body 1 are used for electrical connection with the circuit board 5. The bending grooves 12 on both sides of the outer surface of the pins 11 facilitate the bending of the pins 11, which helps to conveniently weld the pins 11 to the circuit board 5. The protective shell 2 is firmly installed at the lower end of the silicon carbide power device body 1, which can protect the pins 11 of the silicon carbide power device before installation and reduce the damage to the silicon carbide power device from the outside.

[0041] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A medical power supply, comprising a box body (3), characterized in that: The upper end of the box body (3) is provided with a cover plate (31), the lower inner wall of the box body (3) is fixedly provided with a carrier plate (4), the upper end of the carrier plate (4) is provided with a circuit board (5), the upper end of the carrier plate (4) is provided with a board slot (51) used in conjunction with the circuit board (5), two battery components (6) are provided on both sides of the upper end of the carrier plate (4), and an output pipeline (61) is fixedly provided at the inner end of each battery component (6).

2. The medical power supply according to claim 1, characterized in that: A lower clamp (7) is fixedly provided on one side of the lower inner wall of the box body (3), an upper clamp (71) is provided above the lower clamp (7), and the plurality of output pipelines (61) are located between the upper clamp (71) and the lower clamp (7). Support rods (72) are fixedly provided at both ends of the upper clamp (71), and limiting grooves (73) used in conjunction with the support rods (72) are provided at the beginning of the inner walls on both sides of the box body (3). Four springs (74) are fixedly provided at the upper end of the upper clamp (71), and an upper plate (75) is fixedly provided at the upper ends of the four springs (74). The two ends of the upper plate (75) respectively penetrate the two limiting grooves (73) and are fixedly provided with limit blocks (76), and the limit blocks (76) are connected to the box body (3) by bolts.

3. The medical power supply according to claim 1, characterized in that: Positioning tubes (33) are fixedly provided on both sides of the lower inner wall of the box body (3), and plug posts (34) are fixedly provided on both sides of the lower end of the cover plate (31). The lower end outer surfaces of the plug posts (34) are sleeve-connected with the corresponding positioning tubes (33). Four connecting blocks (32) are fixedly provided on the outer surfaces of the box body (3) and the cover plate (31), and the upper and lower corresponding connecting blocks (32) are connected by bolts.

4. The medical power supply according to claim 1, characterized in that: Two pins (62) are fixedly provided at the lower end of the battery component (6), and slots (63) for matching with the pins (62) are provided on the upper sides of both ends of the carrier board (4).

5. The medical power supply according to claim 2, characterized in that: The four springs (74) are distributed in a rectangular shape, and both ends of the box body (3) are provided with a plurality of bolt grooves for matching with bolts.

6. Silicon carbide power device, characterized in that: The medical power supply comprises the medical power supply as claimed in any one of claims 1 to 5, and further comprises a silicon carbide power device body (1), wherein two pins (11) are fixedly provided at the lower end of the silicon carbide power device body (1), and the two silicon carbide power device bodies (1) are mounted on the upper end of a circuit board (5).

7. The silicon carbide power device according to claim 6, characterized in that: A protective shell (2) is provided at the lower end of the silicon carbide power device body (1), the pin (11) is located inside the protective shell (2), a clamping block (21) is fixedly provided on the upper side of one end of the protective shell (2), and two clamping columns (22) are fixedly provided on the lower side of one end of the outer surface of the silicon carbide power device body (1), and the two clamping columns (22) are connected to the clamping block (21) through-through.

8. The silicon carbide power device according to claim 6, characterized in that: The outer surface of the pin (11) is provided with bending grooves (12) on both sides.

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