Inductor with high-temperature-resistant and high-humidity-resistant functions

Abstract

The utility model discloses an inductor with a high-temperature-resistant and high-humidity-resistant function. The inductor comprises a shell. The I-shaped magnetic core is installed in the shell, the I-shaped magnetic core is provided with a first I-shaped magnetic core, a second I-shaped magnetic core and a connecting cross beam, one end of the connecting cross beam is connected with the middle of the first I-shaped magnetic core, and the other end of the connecting cross beam is connected with the middle of the second I-shaped magnetic core; and the winding is wound between the first I-type magnetic core and the second I-type magnetic core. According to the technical scheme of the embodiment, the service life, the stability and the practicability of the inductor can be improved.

Description

Technical Field

[0001] This utility model relates to the field of inductor manufacturing technology, and in particular to an inductor with high temperature and high humidity resistance. Background Technology

[0002] Exposed I-beam inductors are prone to corrosion and oxidation of the uninsulated wire (UEW) under high temperature and humidity conditions. The wire itself may even have defects such as pinholes. Combined with the stress of high temperature and humidity in the environment, the insulation is likely to fail, leading to inductor failure. While replacing the UEW with triple-insulated wire can solve the failure problem, the disadvantage of triple-insulated wire is its larger outer diameter, resulting in an inductance that does not meet requirements after winding. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an inductor with high temperature and humidity resistance, a long service life, and high stability and practicality.

[0004] On one hand, the inductor with high temperature and high humidity resistance according to the embodiments of this utility model includes:

[0005] case;

[0006] An I-shaped magnetic core is installed inside a housing. The I-shaped magnetic core includes a first type I magnetic core, a second type I magnetic core, and a connecting beam. One end of the connecting beam is connected to the middle of the first type I magnetic core, and the other end of the connecting beam is connected to the middle of the second type I magnetic core.

[0007] The winding is wound between the first type I magnetic core and the second type I magnetic core.

[0008] According to some embodiments of the present invention, at least two pins are provided on the side of the first type I magnetic core away from the second magnetic core, and the pins are used to connect to external circuits.

[0009] According to some embodiments of the present invention, a first extending plane is provided on the side of the housing connected to the first type I magnetic core, and the first extending plane abuts against the side of the first type I magnetic core away from the second type I magnetic core.

[0010] According to some embodiments of the present invention, the housing is further provided with a cover plate, the cover plate being connected to the first type I magnetic core and the housing respectively, and the housing being provided with at least two first through holes.

[0011] According to some embodiments of the present invention, the housing is further provided with a first limiting member and a plurality of limiting grooves, one end of the first limiting member is connected to the cover plate, and the other end of the first limiting member abuts against the limiting grooves.

[0012] According to some embodiments of the present invention, epoxy resin is injection molded between the I-shaped magnetic core and the housing.

[0013] According to some embodiments of this utility model, the winding is FIW wire.

[0014] According to some embodiments of the present invention, the shell is a cylindrical shell with a hollow portion.

[0015] The inductor with high temperature and high humidity resistance according to the embodiments of this utility model has at least the following beneficial effects:

[0016] The inductor comprises a housing, an I-shaped magnetic core (installed inside the housing), a first type I magnetic core, a second type I magnetic core, and a connecting beam, one end of which is connected to the middle of the first type I magnetic core, and the other end of which is connected to the middle of the second type I magnetic core; and a winding wound between the first type I magnetic core and the second type I magnetic core. According to the technical solution of this embodiment, the service life, stability, and practicality of the inductor can be improved.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of the overall structure of the inductor with high temperature and high humidity resistance according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the winding structure according to an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the first type I magnetic core, the connecting beam, and the second type I magnetic core according to an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the first extended plane and pins in an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the through hole and the first connecting member in an embodiment of the present utility model. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0025] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0026] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0027] Reference Figures 1 to 3 This utility model embodiment provides an inductor with high temperature and high humidity resistance, including a housing 100; an I-shaped magnetic core 200, which is installed inside the housing 100, and includes a first type I magnetic core, a second type I magnetic core 220, and a connecting beam 230. One end of the connecting beam 230 is connected to the middle of the first type I magnetic core, and the other end of the connecting beam 230 is connected to the middle of the second type I magnetic core 220; and a winding, which is wound between the first type I magnetic core and the second type I magnetic core 220. According to the technical solution of this embodiment, the service life, stability, and practicality of the inductor can be improved.

[0028] It should be noted that the withstand voltage level of the winding in this embodiment is a breakdown voltage greater than or equal to 15KV, and the winding can be directly soldered with a short soldering time (3~4 seconds at 390℃). The inductor in this embodiment is suitable for operation on high-speed automatic winding machines, thereby improving processing efficiency.

[0029] It should be noted that the I-shaped magnetic core 200 concentrates the inductor's magnetic field, thereby enhancing its induction capability and improving its energy storage efficiency and filtering effect. Furthermore, the I-shaped magnetic core 200 allows the inductor to operate stably over a wide frequency range, making it suitable for electronic devices operating at different frequencies. In this embodiment, the inductor is effectively isolated from the external high-temperature and high-humidity environment by the housing 100, protecting its internal structure from damage. The I-shaped magnetic core 200 is made of a material with high saturation magnetic induction intensity and high thermal stability, enabling the inductor to operate normally in high-temperature and high-humidity environments.

[0030] Those skilled in the art will understand that the I-shaped magnetic core 200 can also be provided with heat dissipation channels (such as heat dissipation holes or heat dissipation cavities) to dissipate the heat generated during the operation of the winding in a timely manner, thereby further improving the high temperature resistance of the inductor.

[0031] Reference Figure 4 The first type I magnetic core has at least two pins 240 on the side away from the second magnetic core. These pins 240 are used to connect to external circuits. It should be noted that the pins 240 facilitate connection of the inductor to external circuits via soldering, plugging, or crimping. A proper arrangement of the pins 240 and connection method ensures a robust and reliable electrical connection between the inductor and the external circuit. This not only reduces the failure rate caused by poor connections but also improves the stability and reliability of the entire electronic system. Furthermore, the pin 240 arrangement allows the inductor to adapt to different external circuits and connection methods. Whether it's series, parallel, or other complex connection methods, all can be achieved through a reasonable pin 240 layout and connection method.

[0032] Reference Figure 4 The housing 100 is provided with a first extension plane 110 on the side connected to the first type I magnetic core. The first extension plane 110 abuts against the side of the first type I magnetic core away from the second type I magnetic core 220.

[0033] It should be noted that the contact between the first extended plane 110 and the magnetic core improves the overall stability of the inductor structure. This ensures the stability and reliability of the inductor during operation and reduces the failure rate caused by structural loosening. The design of the first extended plane 110 optimizes the heat dissipation path of the inductor, improving heat dissipation efficiency. The close contact between the first extended plane 110 and the magnetic core also enhances the electromagnetic shielding performance of the inductor, reducing the impact of external electromagnetic interference on the inductor performance and improving the electromagnetic compatibility of the electronic system.

[0034] Reference Figure 5The housing 100 is also provided with a cover plate 400, which is connected to the first type I magnetic core and the housing 100 respectively. The housing 100 is provided with at least two first through holes 410.

[0035] It should be noted that the tight connection between the cover plate 400 and the first type I magnetic core enhances the overall stability of the inductor and reduces the possibility of inductor loosening due to vibration or external forces. Furthermore, the electromagnetic shielding performance of the cover plate 400 reduces the impact of external electromagnetic interference on the inductor's performance. The first through-hole 410 allows for easy connection of the pin 240 to external circuitry, ensuring accurate and reliable connections. Moreover, the protective function of the cover plate 400 enables the inductor to better withstand harsh external environments such as high temperature or high humidity, thereby improving the inductor's reliability and lifespan.

[0036] Reference Figure 1 and Figure 5 The housing 100 is also provided with a first limiting member 420 and a plurality of limiting grooves 430. One end of the first limiting member 420 is connected to the cover plate 400, and the other end of the first limiting member 420 abuts against the limiting grooves 430.

[0037] It should be noted that the limiting groove 430 not only provides a limiting function for the cover plate 400, but also serves as a guide. During assembly, the first limiting member 420 moves along the trajectory of the limiting groove 430 until it reaches the predetermined position and fully engages with the limiting groove 430. This improves the overall stability of the inductor structure and reduces the failure rate caused by structural loosening. During the connection between the cover plate 400 and the limiting groove 430 via the first limiting member 420, by moving or rotating the first limiting member 420, its other end gradually approaches and contacts the limiting groove 430. When the first limiting member 420 fully engages with a certain limiting groove 430, it is checked whether the cover plate 400 is firmly fixed to the inductor housing 100 and whether the first limiting member 420 is in the correct position. This ensures that the housing 100, the cover plate 400, and the I-shaped magnetic core 200 form a complete whole, ensuring the stability of the inductor.

[0038] An epoxy resin is injection molded between the I-shaped magnetic core 200 and the housing 100. It should be noted that epoxy resin, as a high-strength and high-hardness material, effectively enhances the stability of the entire inductor structure when injection molded between the I-shaped magnetic core 200 and the housing 100. Furthermore, epoxy resin has good thermal conductivity, forming an effective heat dissipation channel between the core and the housing 100. When the inductor is operating, the generated heat can be quickly transferred to the housing 100 through the epoxy resin and dissipated into the air through the heat dissipation surface of the housing 100. Further, the epoxy resin injection molding between the core and the housing 100 effectively isolates the core from the external environment, reducing electromagnetic interference and leakage. Simultaneously, the epoxy resin filling reduces the air gap between the core and the housing 100, improving the coupling efficiency of the magnetic circuit and thus optimizing the electromagnetic performance of the inductor. In addition, epoxy resin possesses good corrosion resistance, chemical resistance, and moisture resistance, protecting the internal structure of the inductor from external environmental erosion. This allows the inductor to better adapt to harsh working environments, such as high temperature, high humidity, and corrosive gases.

[0039] The winding is made of FIW wire. It should be noted that FIW wire possesses excellent electrical properties. The insulation layer of the FIW wire employs a multi-coating process, ensuring reliable and defect-free insulation, reducing energy loss during inductor operation, and improving energy conversion efficiency. The insulation material of the FIW wire is based on modified polyurethane, which has a high heat resistance rating and maintains stable performance in high-temperature environments, allowing the inductor to continue operating normally under high-temperature conditions. The multi-layered insulation coating of the FIW wire ensures high insulation strength, preventing leakage or short-circuit faults during inductor operation, thus improving the reliability and safety of the inductor.

[0040] The housing 100 is a cylindrical housing with a hollow section. It should be noted that the cylindrical housing has a large surface area, which is beneficial for heat dissipation from the inductor. The hollow section further increases the internal space of the housing 100, providing more channels for heat transfer. When the inductor is operating, the generated heat can be quickly dissipated into the surrounding environment through the surface of the housing 100 and the hollow section, thereby effectively reducing the inductor's operating temperature. Furthermore, the axisymmetric design of the cylindrical housing helps optimize the distribution of the magnetic field, and the presence of the hollow section can further reduce magnetic field interference and leakage inside the housing 100, thereby improving the electromagnetic performance of the inductor. In addition, the hollow cylindrical housing can also serve as an electromagnetic shielding layer, effectively preventing external electromagnetic interference from affecting the internal circuitry of the inductor.

[0041] In the description of this specification, references to terms such as "one embodiment," "further embodiment," "some specific embodiments," or "some examples," etc., indicate that a specific feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An inductor with high temperature and high humidity resistance, characterized in that, include: case; An I-shaped magnetic core is installed inside a housing. The I-shaped magnetic core includes a first type I magnetic core, a second type I magnetic core, and a connecting beam. One end of the connecting beam is connected to the middle of the first type I magnetic core, and the other end of the connecting beam is connected to the middle of the second type I magnetic core. The winding is wound between the first type I magnetic core and the second type I magnetic core.

2. The inductor with high temperature and high humidity resistance according to claim 1, characterized in that, The first type I magnetic core has at least two pins on the side away from the second type I magnetic core, and the pins are used to connect to external circuits.

3. The inductor with high temperature and high humidity resistance according to claim 1, characterized in that, The housing is provided with a first extension plane on the side connected to the first type I magnetic core, and the first extension plane abuts against the side of the first type I magnetic core away from the second type I magnetic core.

4. The inductor with high temperature and high humidity resistance according to claim 1, characterized in that, The housing is also provided with a cover plate, which is connected to the first type I magnetic core and the housing respectively, and the housing is provided with at least two first through holes.

5. The inductor with high temperature and high humidity resistance according to claim 4, characterized in that, The housing is also provided with a first limiting member and a plurality of limiting grooves. One end of the first limiting member is connected to the cover plate, and the other end of the first limiting member abuts against the limiting grooves.

6. The inductor with high temperature and high humidity resistance according to claim 1, characterized in that, Epoxy resin is injected between the I-shaped magnetic core and the housing.

7. The inductor with high temperature and high humidity resistance according to claim 1, characterized in that, The winding is made of FIW wire.

8. The inductor with high temperature and high humidity resistance according to claim 1, characterized in that, The shell is a cylindrical shell with a hollow portion.

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