Magnetic core assembly and inductor

Abstract

The utility model provides a magnetic core assembly and an inductor, and belongs to the technical field of inductors, and the magnetic core assembly comprises a magnetic column assembly and a magnetic yoke assembly. The magnetic column assembly comprises a first magnetic column and a second magnetic column which are oppositely arranged in a spaced mode in the first direction. The magnet yoke assembly comprises a first magnet yoke and a second magnet yoke which are arranged oppositely in a spaced mode in the second direction, the first magnetic column and the second magnetic column are located between the first magnet yoke and the second magnet yoke, one end of the first magnetic column and one end of the second magnetic column face the first magnet yoke, and the other end of the first magnetic column and the other end of the second magnetic column face the second magnet yoke. The magnetic conductivity of the magnetic column assembly is larger than or equal to that of the magnetic yoke assembly. Therefore, the magnetic conductivity of the magnetic column assembly can be changed by changing the material of the magnetic column assembly in the magnetic core assembly, so that the loss of the magnetic column assembly is reduced, the heat dissipation efficiency of the magnetic column assembly is improved, and the overall loss and temperature rise of the inductor are reduced.

Description

Technical Field

[0001] The present application relates to the field of inductance technology, and in particular to a magnetic core component and an inductor. Background Art

[0002] An inductor is a component in a circuit that generates an electromotive force (EMF) when current changes, thereby resisting changes in the original current. By storing energy and resisting current changes, it provides circuits with various functions, including energy storage, current smoothing, filtering, and voltage transformation. The core, as the magnetic material in an inductor, primarily enhances the inductor's inductance, improving the circuit's energy storage capacity and, to a certain extent, its frequency response. The core's material directly influences the inductor's performance parameters, such as inductance, quality factor, and temperature rise.

[0003] Currently, inductor cores typically utilize magnetic materials such as iron silicon, sendust, iron nickel, and ferrite, or a combination of multiple materials. While traditional magnetic materials like iron silicon and sendust offer high magnetic permeability, they are also increasingly challenged by magnetic losses and thermal conductivity. To address these challenges, the inductor design community is actively exploring new magnetic materials and combined structures with low losses and high thermal conductivity. Continuously iterating research directions include, but are not limited to, the introduction of new alloys, composite materials, or nanomaterials to optimize the balance between magnetic properties and thermal conductivity.

[0004] However, current magnetic cores are typically divided into a column and a yoke. Due to the uneven distribution of magnetic field strength within the core, the bias field strengths of the column and yoke are typically roughly the same, or the column bias field strength is higher than the yoke bias field strength. This results in losses in the column equal to or slightly higher than the yoke, and the column temperature rise is also higher than the yoke temperature. Furthermore, because the column is wrapped with a coil, heat dissipation in the column is inferior to that of the yoke. Furthermore, the coil generates some heat when energized, making heat removal from the column even more difficult. Utility Model Content

[0005] The present application provides a magnetic core assembly and an inductor. By changing the material of the magnetic column assembly in the magnetic core assembly, the magnetic permeability of the magnetic column assembly is changed to reduce the loss of the magnetic column assembly, improve the heat dissipation efficiency of the magnetic column assembly, and thus reduce the overall loss and temperature rise of the inductor.

[0006] In order to achieve the above objectives, this application provides the following technical solutions:

[0007] A first aspect of the present application provides a magnetic core assembly, comprising:

[0008] The magnetic column assembly comprises a first magnetic column and a second magnetic column spaced apart and arranged opposite to each other along a first direction;

[0009] The yoke assembly includes a first yoke and a second yoke spaced apart and opposite to each other along a second direction, the first magnetic column and the second magnetic column are located between the first yoke and the second yoke, one end of the first magnetic column and the second magnetic column faces the first yoke, and the other end of the first magnetic column and the second magnetic column faces the second yoke;

[0010] The magnetic permeability of the magnetic column assembly is greater than or equal to the magnetic permeability of the magnetic yoke assembly.

[0011] Based on the above technical solution, this application can also be improved as follows.

[0012] In a possible implementation, the first magnetic column and the second magnetic column are arranged in parallel, and the first magnetic column and the second magnetic column are made of the same material;

[0013] The first magnetic yoke and the second magnetic yoke are arranged in parallel, and the first magnetic yoke and the second magnetic yoke are made of the same material.

[0014] In a possible implementation, one end of the first magnetic column and the second magnetic column is connected to the first magnetic yoke, and the other end of the first magnetic column and the second magnetic column is connected to the second magnetic yoke.

[0015] In a possible implementation, the first magnetic column and the second magnetic column are made of amorphous magnetic material;

[0016] The first magnetic yoke and the second magnetic yoke are made of magnetic powder material.

[0017] In a possible implementation, the amorphous magnetic material is an iron-based amorphous alloy.

[0018] In a possible implementation, the first magnetic column and the second magnetic column are made by winding a strip.

[0019] In a possible implementation, the material of the magnetic column assembly and the magnetic yoke assembly is magnetic powder material;

[0020] The magnetic permeability range of the magnetic column assembly and the magnetic yoke assembly is 26-125μ, and the magnetic permeability used by the magnetic yoke assembly is less than or equal to the magnetic permeability used by the magnetic column assembly.

[0021] In a possible implementation, the material of the magnetic column assembly and the magnetic yoke assembly is magnetic powder material;

[0022] The magnetic permeability range of the magnetic column assembly and the magnetic yoke assembly is 26-125μ, and the magnetic permeability used by the magnetic yoke assembly is the same as the magnetic permeability used by the magnetic column assembly.

[0023] In a possible implementation, the air gap between the magnetic column assembly and the magnetic yoke assembly is ≥0.01 mm.

[0024] A second aspect of the present application provides an inductor, comprising the above-mentioned magnetic core assembly.

[0025] The present application provides a magnetic core assembly and an inductor, wherein the magnetic core assembly includes a magnetic column assembly and a magnetic yoke assembly. The magnetic column assembly includes a first magnetic column and a second magnetic column spaced apart and arranged oppositely along a first direction. The magnetic yoke assembly includes a first magnetic yoke and a second magnetic yoke spaced apart and arranged oppositely along a second direction, the first magnetic column and the second magnetic column are located between the first magnetic yoke and the second magnetic yoke, one end of the first magnetic column and the second magnetic column faces the first magnetic yoke, and the other end of the first magnetic column and the second magnetic column faces the second magnetic yoke. The magnetic permeability of the magnetic column assembly is greater than or equal to the magnetic permeability of the magnetic yoke assembly. In this way, the present application can change the material of the magnetic column assembly in the magnetic core assembly, thereby changing the magnetic permeability of the magnetic column assembly, so as to reduce the loss of the magnetic column assembly, improve the heat dissipation efficiency of the magnetic column assembly, and thereby reduce the overall loss and temperature rise of the inductor. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] Figure 1 A schematic structural diagram of a magnetic core assembly provided in one embodiment of the present application.

[0028] Description of reference numerals:

[0029] 100-magnetic core assembly;

[0030] 200-magnetic column assembly;

[0031] 210-first magnetic column; 220-second magnetic column;

[0032] 300-yoke assembly;

[0033] 310 - first magnetic yoke; 320 - second magnetic yoke. DETAILED DESCRIPTION

[0034] As described in the background, current magnetic cores are typically divided into a column and a yoke. Due to the uneven distribution of the magnetic field strength within the core, the bias magnetic field strengths of the column and yoke are typically roughly the same, or the column bias magnetic field strength is higher than the yoke bias magnetic field strength. This results in the column losses being equal to or slightly higher than the yoke losses, and the column temperature rise also being higher than the yoke temperature. Furthermore, because the column is wrapped with a coil, heat dissipation from the column is inferior to that of the yoke. Furthermore, the coil generates some heat when energized, making heat removal from the column even more difficult.

[0035] In response to the above technical problems, an embodiment of the present application provides a magnetic core assembly and an inductor, wherein the magnetic core assembly includes a magnetic column assembly and a magnetic yoke assembly. The magnetic column assembly includes a first magnetic column and a second magnetic column spaced apart and arranged opposite to each other along a first direction. The magnetic yoke assembly includes a first magnetic yoke and a second magnetic yoke spaced apart and arranged opposite to each other along a second direction, the first magnetic column and the second magnetic column are located between the first magnetic yoke and the second magnetic yoke, one end of the first magnetic column and the second magnetic column faces the first magnetic yoke, and the other end of the first magnetic column and the second magnetic column faces the second magnetic yoke. The magnetic permeability of the magnetic column assembly is greater than or equal to the magnetic permeability of the magnetic yoke assembly. In this way, the present application can change the material of the magnetic column assembly in the magnetic core assembly, thereby changing the magnetic permeability of the magnetic column assembly, so as to reduce the loss of the magnetic column assembly, improve the heat dissipation efficiency of the magnetic column assembly, and thereby reduce the overall loss and temperature rise of the inductor.

[0036] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0037] As people's requirements for inductor components continue to increase, the rapid development of the inductor field has accelerated. In inductor design, the magnetic core, as the magnetic material part of the inductor, is usually made of magnetic materials such as iron silicon, sendust, iron nickel, ferrite, etc., or a combination of multiple materials.

[0038] Magnetic cores made from ferrite materials are easily magnetized and demagnetized. When a DC magnetizing current passes through them, the ferrite easily enters a saturated state, causing the core's magnetic permeability to decrease. Its inductance also tends to decrease rapidly with increasing DC magnetizing current. Furthermore, magnetic cores made from sendust material have low initial permeability and low losses, making them less prone to saturation and requiring fewer turns. However, due to sendust's low permeability, it struggles to meet the performance requirements of inductor components.

[0039] However, current magnetic cores are typically one-piece structures, made entirely of a single material. This results in uneven magnetic field strength distribution within the core, causing some core wear. Furthermore, when the coil is energized, the heat generated by the coil and the core surrounding it are difficult to conduct away, causing a rapid temperature rise and low heat dissipation efficiency.

[0040] To address the aforementioned issues, embodiments of the present application provide a magnetic core assembly and inductor. By changing the material of the magnetic column assembly within the magnetic core assembly, and thereby changing the magnetic permeability of the magnetic column assembly, the losses of the magnetic column assembly are reduced, the heat dissipation efficiency of the magnetic column assembly is improved, and the overall losses and temperature rise of the inductor are reduced. The specific structures of the magnetic core assembly and inductor provided in embodiments of the present application are described below in conjunction with the accompanying drawings.

[0041] refer to Figure 1 In a first aspect, an embodiment of the present application provides a magnetic core assembly 100, which may include a magnetic column assembly 200 and a magnetic yoke assembly 300. The magnetic column assembly 200 may include a first magnetic column 210 and a second magnetic column 220. In one possible implementation, the first magnetic column 210 and the second magnetic column 220 may be spaced apart along the first direction, and the first magnetic column 210 and the second magnetic column 220 may be arranged relative to each other, so that a hollow structure is provided between the first magnetic column 210 and the second magnetic column 220. Alternatively, the magnetic yoke assembly 300 may include a first magnetic yoke 310 and a second magnetic yoke 320. In one possible implementation, the first magnetic yoke 310 and the second magnetic yoke 320 may be spaced apart along the second direction, and the first magnetic yoke 310 and the second magnetic yoke 320 may be arranged relative to each other. Thus, the hollow structure between the first magnetic column 210 and the second magnetic column 220 can also be located between the first magnetic yoke 310 and the second magnetic yoke 320, that is, the same hollow structure exists between the magnetic column assembly 200 and the magnetic yoke assembly 300. It can be understood that the hollow structure is used to dissipate heat from the magnetic column assembly 200 and the magnetic yoke assembly 300.

[0042] Continue to refer Figure 1 In a specific implementation of this embodiment, the first magnetic column 210 and the second magnetic column 220 can be located between the first magnetic yoke 310 and the second magnetic yoke 320. In one possible implementation, one end of the first magnetic column 210 and the second magnetic column 220 faces the first magnetic yoke 310, and the other end of the first magnetic column 210 and the second magnetic column 220 faces the second magnetic yoke 320, so that the first magnetic column 210 and the second magnetic column 220 can be located between the first magnetic yoke 310 and the second magnetic yoke 320 to form a complete magnetic core assembly 100. It is understandable that the magnetic permeability of the magnetic column assembly 200 can be greater than or equal to the magnetic permeability of the magnetic yoke assembly 300. In this way, by improving the magnetic permeability of the magnetic column assembly 200, the field strength of the magnetic column assembly 200 can be reduced, thereby reducing the loss of the magnetic column assembly 200, helping to reduce the loss in the energy conversion process and improve energy efficiency.

[0043] It should be noted that, in one possible implementation, the first direction may be a horizontal direction, in which case the second direction is a vertical direction. In another possible implementation, the first direction may be a vertical direction, in which case the second direction is a horizontal direction. This application is not limited thereto.

[0044] Continue to refer Figure 1 On the basis of the above embodiment, the first magnetic column 210 and the second magnetic column 220 can be arranged in parallel, and the first magnetic column 210 and the second magnetic column 220 can be made of the same material. Correspondingly, the first magnetic yoke 310 and the second magnetic yoke 320 can also be arranged in parallel, and the first magnetic yoke 310 and the second magnetic yoke 320 can be made of the same material. In the embodiment of the present application, the material used for the first magnetic column 210 and the second magnetic column 220 is different from the material used for the first magnetic yoke 310 and the second magnetic yoke 320, so that the magnetic column assembly 200 and the magnetic yoke assembly 300 have different magnetic permeabilities due to the different materials. Of course, in another possible implementation, the material used for the first magnetic column 210 and the second magnetic column 220 can also be the same as the material used for the first magnetic yoke 310 and the second magnetic yoke 320, and the present application does not limit this.

[0045] Continue to refer Figure 1 , based on the above embodiment, one end of the first magnetic pillar 210 and the second magnetic pillar 220 is connected to the first magnetic yoke 310, and the other end of the first magnetic pillar 210 and the second magnetic pillar 220 is connected to the second magnetic yoke 320. In the embodiment of the present application, the end surface of the first magnetic pillar 210 facing the first magnetic yoke 310 can be connected to the inner surface of the first magnetic yoke 310 facing the first magnetic pillar 210, and the end surface of the second magnetic pillar 220 facing the first magnetic yoke 310 can be connected to the inner surface of the first magnetic yoke 310 facing the second magnetic pillar 220. Correspondingly, the end surface of the first magnetic pillar 210 facing the second magnetic yoke 320 can be connected to the inner surface of the second magnetic yoke 320 facing the first magnetic pillar 210, and the end surface of the second magnetic pillar 220 facing the second magnetic yoke 320 can be connected to the inner surface of the second magnetic yoke 320 facing the second magnetic pillar 220. In this way, the first magnetic column 210 , the second magnetic column 220 , the first magnetic yoke 310 and the second magnetic yoke 320 are connected to each other, so that the entire magnetic core assembly 100 becomes a whole.

[0046] Based on the above embodiment, the material of the first magnetic column 210 and the second magnetic column 220 can be an amorphous magnetic material, and the material of the first magnetic yoke 310 and the second magnetic yoke 320 can be a magnetic powder material. It should be noted that amorphous magnetic materials have excellent properties such as high magnetic permeability, high resistivity, strong corrosion resistance, good toughness, and high mechanical tensile strength. In this way, the magnetic permeability of the magnetic column assembly 200 can be greater than or equal to the magnetic permeability of the magnetic yoke assembly 300, and the improvement of the magnetic permeability of the magnetic column assembly 200 can reduce the bias magnetic field strength of the magnetic column assembly 200, thereby reducing the loss and temperature rise of the magnetic column assembly 200.

[0047] It is understandable that in order to reduce the loss of the magnetic column assembly 200, an amorphous magnetic material with low loss characteristics is selected to prepare the magnetic column assembly 200. The core loss is related to the bias field strength, magnetic flux density, and operating frequency of the magnetic core, which conforms to the Steinmetz equation P = kf α ΔB β Where P is the loss per cubic centimeter of the core component; f is the frequency; ΔB is the change in magnetic induction intensity; k, α, and β are the Steinmetz coefficients, which can vary with different materials and temperature.

[0048] Among them, when the external circuit control does not change, the magnetic flux and operating frequency of the magnetic core assembly 100 remain unchanged. If the magnetic flux cross-sectional area remains unchanged and the magnetic flux density of the inductor remains unchanged, the bias magnetic field strength can be reduced by using a material with high magnetic permeability, thereby reducing the temperature rise. Since the bias magnetic field strengths of the magnetic column assembly 200 and the magnetic yoke assembly 300 are basically the same, or the bias magnetic field strength of the magnetic column assembly 200 is higher than that of the magnetic yoke assembly 300, the magnetic column assembly 200 can be prepared using a material with high magnetic permeability. Due to the disordered atomic arrangement of the amorphous magnetic material, the hysteresis phenomenon in its magnetization process is weakened, and the area of the hysteresis loop is smaller, so the hysteresis loss generated under the action of the alternating magnetic field is lower. In addition, amorphous magnetic materials also have lower eddy current losses. In the high frequency range, amorphous magnetic materials have a higher resistivity, which can reduce the heat loss caused by eddy currents under the alternating magnetic field.

[0049] Based on the above embodiments, in the embodiments of the present application, the amorphous magnetic material can be, for example, an iron-based amorphous alloy. Of course, in other embodiments, the amorphous magnetic material can also be a soft magnetic alloy, a permanent magnetic material, a magneto-optical material, etc. This application does not limit this.

[0050] Continue to refer Figure 1On the basis of the above embodiment, the first magnetic column 210 and the second magnetic column 220 can be made by winding a strip. In this way, compared with the pressed magnetic core assembly 100 in the related art, the magnetic column assembly 200 provided in the embodiment of the present application is made by winding a strip, which can enable the first magnetic column 210 and the second magnetic column 220 to be integrally formed, thereby making the production process of the entire magnetic core assembly 100 more efficient and less costly. In the related art, the magnetic column assembly 200 is prepared using iron silicon powder material. Due to height restrictions, each component must be prepared separately during the production process and then combined, which makes the manufacturing process cumbersome and time-consuming, and also increases production costs. In the embodiment of the present application, the integral forming of amorphous magnetic material not only simplifies the manufacturing process, but also improves the productivity of the production line, bringing greater convenience and economic benefits to the manufacturing industry. It can be understood that no air gap is set inside the first magnetic column 210 and the second magnetic column 220, thereby reducing the loss of the magnetic column assembly 200 and improving the heat dissipation efficiency of the magnetic column assembly 200.

[0051] Alternatively, the yoke assembly can be made from a magnetic powder material with low magnetic permeability. This, while maintaining a certain level of inductance, allows for more flexible design, improved broadband loss characteristics, and the ability to meet the demand for greater current carrying capacity. As will be appreciated, due to the high thermal conductivity of amorphous magnetic materials, heat generated by the losses of the magnetic column assembly 200 can be quickly transferred to the yoke assembly 300, further improving the heat dissipation efficiency of the magnetic column assembly 200 and reducing temperature rise.

[0052] refer to Figure 1 In a possible implementation, the materials of the magnetic column assembly 200 and the magnetic yoke assembly 300 can both be magnetic powder materials. The magnetic permeability range of the magnetic column assembly 200 and the magnetic yoke assembly 300 can both be 26-125μ. For example, taking a 30kW photovoltaic inverter inductor as an example, the magnetic permeability of the magnetic column assembly 200 and the magnetic yoke assembly 300 can both be 60μ. According to actual tests, the bias field strength of the magnetic column assembly 200 is 260oe, while the bias field strength of the magnetic yoke assembly 300 is 229oe. The temperature rise of the magnetic column assembly 200 is 148°C, and the temperature rise of the magnetic yoke assembly 300 is 140°C. The loss of the magnetic column assembly 200 is 15W, while the loss of the magnetic yoke assembly 300 is 12W.

[0053] Continue to refer Figure 1Based on the above embodiment, the air gap between the magnetic column assembly 200 and the magnetic yoke assembly 300 can be ≥0.01 mm. For example, the air gap between the magnetic column assembly 200 and the magnetic yoke assembly 300 can be 0.75 mm. It is understood that, due to the presence of the air gap, the bias field strength of the magnetic column assembly 200 is significantly higher than the bias field strength of the magnetic yoke assembly 300, and the loss and temperature rise of the magnetic column assembly 200 are also higher than those of the magnetic yoke assembly 300.

[0054] refer to Figure 1 In another possible implementation, the materials of the magnetic column assembly 200 and the magnetic yoke assembly 300 can both be magnetic powder materials. The magnetic permeability of the first magnetic column 210 and the second magnetic column 220 can be in the range of 26-125μ, and the magnetic permeability of the first magnetic yoke 310 and the second magnetic yoke 320 can also be 26-125μ. For example, continuing to take the 30kW photovoltaic inverter inductor as an example, the magnetic permeability of the first magnetic column 210 and the second magnetic column 220 can be in the range of 75μ, and the magnetic permeability of the first magnetic yoke 310 and the second magnetic yoke 320 can be 40μ. Actual tests show that the bias field strength of the magnetic column assembly 200 at this time is 156oe, and the bias field strength of the magnetic yoke assembly 300 is 241oe. The temperature rise of the magnetic column assembly 200 is 125°C, and the temperature rise of the magnetic yoke assembly 300 is 135°C. The loss of the magnetic column assembly 200 is 10 W, while the loss of the magnetic yoke assembly 300 is 13 W. Thus, it can be seen that, on the basis of using the same material for the magnetic column assembly 200 and the magnetic yoke assembly 300, increasing the magnetic permeability of the magnetic column assembly 200 and reducing the magnetic permeability of the magnetic yoke assembly 300 can clearly reduce the bias field strength of the magnetic column assembly 200, reduce the loss of the magnetic column assembly 200 by more than 33%, and reduce the temperature rise of the magnetic column assembly 200 by more than 15%, effectively improving the heat dissipation efficiency.

[0055] In an embodiment of the present application, the material of the magnetic column assembly 200 is an amorphous magnetic material, and the material of the magnetic yoke assembly 300 is a magnetic powder material. The magnetic permeability of the first magnetic column 210 and the second magnetic column 220 can be in the range of 200-10000μ, and the magnetic permeability of the first magnetic yoke 310 and the second magnetic yoke 320 can be in the range of 26-125μ. For example, taking a 30kW photovoltaic inverter inductor as an example, the magnetic permeability of the first magnetic column 210 and the second magnetic column 220 can be in the range of 1000μ, and the magnetic permeability of the first magnetic yoke 310 and the second magnetic yoke 320 can be 40μ. According to actual tests, the bias field strength of the magnetic column assembly 200 at this time is 12oe, and the bias field strength of the magnetic yoke assembly 300 is 260oe. The temperature rise of the magnetic column assembly 200 is 86°C, and the temperature rise of the magnetic yoke assembly 300 is 113°C. The loss of the magnetic column assembly 200 is 2 W, while the loss of the magnetic yoke assembly 300 is 12 W. Therefore, it can be seen that, based on the use of different materials for the magnetic column assembly 200 and the magnetic yoke assembly 300, replacing the magnetic column assembly 200 with an amorphous magnetic material with high magnetic permeability, low loss, and high thermal conductivity can significantly reduce the bias field strength and temperature rise of the magnetic column assembly 200, effectively improving the heat dissipation efficiency and achieving the goals of low loss and high thermal conductivity.

[0056] A second aspect of an embodiment of the present application provides an inductor (not shown in the figure), wherein the inductor may include the aforementioned magnetic core assembly 100. It is understood that the inductor provided by the present application can be applied to power electronic boost converter circuits, inverter circuits, PFC (power factor correction) circuits, or DC / DC converter circuits.

[0057] In the embodiment of the present application, by changing the material of the magnetic column assembly 200 in the magnetic core assembly 100, the magnetic permeability of the magnetic column assembly 200 is changed to reduce the loss of the magnetic column assembly 200, improve the heat dissipation efficiency of the magnetic column assembly 200, and thereby reduce the overall loss and temperature rise of the inductor.

[0058] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0059] It should be noted that phrases such as "in a specific implementation," "in some embodiments," "in this embodiment," and "exemplarily" mentioned in the specification indicate that the described embodiment may include a particular feature, structure, or characteristic, but not every embodiment necessarily includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0060] Generally speaking, terms should be understood, at least in part, based on the context in which they are used. For example, as used herein, the term "one or more" can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense, depending at least in part on the context. Similarly, terms such as "a," "an," or "the" can also be understood to convey either singular or plural usage, depending at least in part on the context.

[0061] It should be readily understood that “on,” “above,” and “over” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0062] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be in other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A magnetic core assembly, characterized in that: include: The magnetic column assembly comprises a first magnetic column and a second magnetic column spaced apart and arranged opposite to each other along a first direction; a yoke assembly comprising a first yoke and a second yoke spaced apart and arranged opposite to each other along a second direction, wherein the first magnetic column and the second magnetic column are located between the first yoke and the second yoke, one end of the first magnetic column and the second magnetic column faces the first yoke, and the other end of the first magnetic column and the second magnetic column faces the second yoke; The magnetic permeability of the magnetic column assembly is greater than or equal to the magnetic permeability of the magnetic yoke assembly.

2. The magnetic core assembly according to claim 1, wherein: The first magnetic column and the second magnetic column are arranged in parallel, and the first magnetic column and the second magnetic column are made of the same material; The first magnetic yoke and the second magnetic yoke are arranged in parallel, and the first magnetic yoke and the second magnetic yoke are made of the same material.

3. The magnetic core assembly according to claim 2, wherein: One end of the first magnetic column and the second magnetic column is connected to the first magnetic yoke, and the other end of the first magnetic column and the second magnetic column is connected to the second magnetic yoke.

4. The magnetic core assembly according to claim 3, characterized in that The materials of the first magnetic column and the second magnetic column are amorphous magnetic materials; The first magnetic yoke and the second magnetic yoke are made of magnetic powder material.

5. The magnetic core assembly according to claim 4, characterized in that The amorphous magnetic material is an iron-based amorphous alloy.

6. The magnetic core assembly according to any one of claims 1 to 5, characterized in that: The first magnetic column and the second magnetic column are made by winding a strip material.

7. The magnetic core assembly according to claim 1, wherein: The materials of the magnetic column assembly and the magnetic yoke assembly are magnetic powder materials; The magnetic permeability range of the magnetic column assembly and the magnetic yoke assembly is both 26-125μ, and the magnetic permeability adopted by the magnetic yoke assembly is less than or equal to the magnetic permeability adopted by the magnetic column assembly.

8. The magnetic core assembly according to claim 1, wherein: The materials of the magnetic column assembly and the magnetic yoke assembly are magnetic powder materials; The magnetic permeability range of the magnetic column assembly and the magnetic yoke assembly is both 26-125μ, and the magnetic permeability used by the magnetic yoke assembly is the same as the magnetic permeability used by the magnetic column assembly.

9. The magnetic core assembly according to claim 8, wherein: The air gap between the magnetic column assembly and the magnetic yoke assembly is ≥0.01 mm.

10. An inductor, characterized in that: The magnetic core assembly comprises the magnetic core assembly according to any one of claims 1 to 9.

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