CN110828129A - Inductor - Google Patents
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- CN110828129A CN110828129A CN201810914148.4A CN201810914148A CN110828129A CN 110828129 A CN110828129 A CN 110828129A CN 201810914148 A CN201810914148 A CN 201810914148A CN 110828129 A CN110828129 A CN 110828129A
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- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
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Abstract
The invention provides an inductor, which comprises a plurality of first magnetic conduction pieces. The plurality of first magnetic conduction pieces have approximately the same appearance shape, and the plurality of first magnetic conduction pieces are arranged into a hollow ring shape, and the hollow ring shape at least has a side part and a bending part. Among the first magnetic conduction pieces on the side portion, a non-magnetic conduction piece is arranged between every two adjacent first magnetic conduction pieces, and the plurality of first magnetic conduction pieces are made of alloy powder materials.
Description
Technical Field
The present invention relates to an inductor, and more particularly, to an inductor having a stacked structure.
Background
With the advance of technology, electronic devices, such as mobile phones, tablet computers, notebook computers or televisions, are not desirable to be reduced in size for portability or for aesthetic purposes. In order to achieve a reduction in the size of the electronic device, smaller electronic components must be selected. Generally, electronic components can be divided into active components, such as transistors or integrated circuits with complex functions, and passive components, such as resistors, capacitors or inductors. The active device can significantly achieve the purpose of reducing the volume through the improvement of the manufacturing process, such as the progress of 14 nm, 10 nm, 7 nm and the like. However, passive components are not easy to find a technical means to achieve a significantly reduced volume.
Taking the design of the inductor in the passive component as an example, the inductor mainly comprises a magnetic core component and a coil, wherein the volume of the magnetic core component is a main factor influencing the overall volume of the inductor. Therefore, it is most important to design the core assembly so that the volume of the core assembly is reduced. Generally, since the inductor needs to store electric energy, the magnetic core assembly cannot be made of a material with too high permeability (permeability), otherwise the purpose of storing electric energy is not easily achieved. However, if the magnetic core assembly is made of a material with too low a permeability, the magnetic core assembly will be too bulky and not suitable for use in electronic devices. In other words, how to design a smaller inductor while maintaining the electronic characteristics of the inductor is a very important issue in the industry of manufacturing passive components.
Disclosure of Invention
The invention provides an inductor which is provided with a plurality of magnetic conduction pieces, wherein the magnetic conduction pieces are made of alloy powder (alloy powder) materials and form the inductor in a stacking mode. Thus, an inductor with a smaller size can be designed while maintaining the electronic characteristics of the inductor.
The invention provides an inductor, which comprises a plurality of first magnetic conduction pieces. The plurality of first magnetic conduction pieces have approximately the same appearance shape, and the plurality of first magnetic conduction pieces are arranged into a hollow ring shape, and the hollow ring shape at least has a side part and a bending part. Among the first magnetic conduction pieces on the side portion, a non-magnetic conduction piece is arranged between every two adjacent first magnetic conduction pieces, and the plurality of first magnetic conduction pieces are made of alloy powder materials.
In one example, each of the first magnetic conductive members has a first surface and a second surface, the first surface of the same first magnetic conductive member is not adjacent to the second surface, and the non-magnetic conductive member has an upper surface and a lower surface, the upper surface contacts the first surface of one of the plurality of first magnetic conductive members, and the lower surface contacts the second surface of another first magnetic conductive member. Further, the areas of the first and second faces may be substantially equal. And areas of the upper surface and the first surface of the non-magnetic member may be substantially equal, and areas of the lower surface and the second surface of the non-magnetic member may be substantially equal. In another example, among the plurality of first magnetic conductive members of the bending portion, adjacent first magnetic conductive members are in direct contact. And the appearance shapes of the plurality of first magnetic conduction pieces of the bending part can be roughly arranged into an L shape, an arc shape or a trapezoid shape.
The invention provides another inductor comprising a magnetic core assembly. The magnetic core subassembly contains a plurality of first magnetic conduction pieces, a plurality of second magnetic conduction pieces and a plurality of non-magnetic conduction pieces, and the magnetic core subassembly is the cavity annular, and the magnetic core subassembly has lateral part and flexion, a plurality of first magnetic conduction pieces are located the lateral part, a plurality of second magnetic conduction pieces are located the flexion. The plurality of non-magnetic conduction pieces are arranged between the adjacent first magnetic conduction pieces in the side part and between the side part and the bending part, and the plurality of first magnetic conduction pieces and the plurality of second magnetic conduction pieces are made of alloy powder materials.
In one example, each first magnetic conductive member has a first surface and a second surface, and the non-magnetic conductive member covers at least the first surface or the second surface. In addition, each second magnetic conduction member may be integrally formed, and the appearance shape of each second magnetic conduction member is substantially L-shaped, arc-shaped or trapezoid. In addition, each second magnetic conduction member may also be formed by combining a plurality of third magnetic conduction members, and the plurality of third magnetic conduction members are tightly connected with each other.
The invention provides another inductor. The inductor contains the magnetic core subassembly, and the magnetic core subassembly contains a plurality of first magnetic conduction spare, have an at least first air gap between a plurality of first magnetic conduction spare, first air gap has first predetermined interval along a first direction of encircleing, just a plurality of first magnetic conduction spare is made by the alloy powder material. Wherein the first winding direction is a magnetic line direction inside the magnetic core assembly.
In summary, in the inductor provided by the present invention, the magnetic core assembly is stacked by using a plurality of magnetic conductive members made of alloy powder (alloy powder) material, and the non-magnetic conductive member is inserted between the plurality of magnetic conductive members, so that the inductor with a smaller volume can be designed while maintaining the electronic characteristics of the inductor.
Other effects and embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram illustrating an inductor according to an embodiment of the invention;
FIG. 2A is a schematic diagram illustrating a partial structure of an inductor according to an embodiment of the invention;
FIG. 2B is a schematic diagram illustrating a partial structure of an inductor according to another embodiment of the present invention;
FIG. 3A is a schematic view of a side portion and a curved portion according to an embodiment of the invention;
FIG. 3B is a schematic view of a side portion and a bending portion according to another embodiment of the invention;
FIG. 4 is a schematic diagram illustrating an inductor according to another embodiment of the present invention;
fig. 5A is a schematic view illustrating a second magnetic conductive member according to an embodiment of the invention;
fig. 5B is a schematic view illustrating a second magnetic conductive member according to another embodiment of the invention.
Description of the symbols
1 inductor 1a, 1c, 1e side
1b, 1d, 1f bends 12, 12', 12 ″
10. 10a, 10b, 10c, 10d first magnetic conduction piece
100a first face of a first magnetically permeable member 10a
102a second face of the first magnetically permeable member 10a
100b first face of first magnetically permeable member 10b
102b second face of the first magnetically permeable member 10b
4 inductor 4a side part
400a first face of first magnetic conductive member 40a
402a second face of first magnetically permeable member 40a
400b first face of first magnetically permeable member 40b
402b second face of first magnetically permeable member 40b
42 non-magnetic conductive member 44, 44' second magnetic conductive member
Detailed Description
The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of a preferred embodiment, which is to be read in connection with the accompanying drawings. Directional terms as referred to in the following examples, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Accordingly, the directional terminology is used for purposes of illustration and is in no way limiting.
Referring to fig. 1, fig. 1 is a schematic structural diagram illustrating an inductor according to an embodiment of the invention. As shown in fig. 1, the inductor 1 includes a plurality of first magnetic conductive members 10, each of the first magnetic conductive members 10 can be regarded as a part of a magnetic core, so that the plurality of first magnetic conductive members 10 are stacked together and can be regarded as a magnetic core component of the inductor 1. In practice, the plurality of first magnetic conductive members 10 may be stacked together to form a hollow ring structure, however, the present embodiment does not limit the plurality of first magnetic conductive members to be stacked clockwise or counterclockwise, and does not limit the details of the hollow ring structure. For example, the present embodiment does not limit the length-width ratio, the thickness, the turning angle, or whether there is a guiding angle of the hollow ring, as long as the first magnetic conductive members 10 are stacked in a certain surrounding direction, the stacked magnetic core assembly can form a substantially closed magnetic line path, which belongs to the category of the hollow ring of the present embodiment. In addition, the number of the hollow rings is not limited in this embodiment, and in practice, as long as the inductor 1 utilizes the first magnetic conductive member 10 to stack a hollow ring, whether there is more than one hollow ring (i.e., a zigzag structure or a multiple ring structure) or other extending structures should be consistent with the scope of the hollow rings in this embodiment.
A plurality of first magnetically permeable members 10The alloy is made of the same alloy powder (alloy powder) material. The alloy powder material referred to in this embodiment may be, but is not limited to, composed of iron, nickel, manganese, and zinc, but since there are many component ratios that can be selected in practice, this embodiment cannot exhaust the composition manner of the alloy powder material one by one, and can only demonstrate the relative permeability (μ) of the alloy powder materialr) The relative magnetic permeability of the alloy powder material is smaller than that of a ceramic magnetic (ferromagnetic) material. Relative magnetic permeability (mu) as referred to hereinr) The term "means the actual permeability (μ) of the alloy powder material relative to the vacuum permeability (μ)0) The relative permeability is unitless because of the proportional value of (2). It will be understood by those skilled in the art that the conversion relationship between the magnetic permeability and the relative magnetic permeability is μ ═ μr×μ0Wherein the vacuum permeability is 4 π × 10-7(H/m), therefore, the magnetic permeability (. mu.) of the alloy powder material is not actually measured by direct definition. For convenience of description, the relative magnetic permeability of the alloy powder material is explained and demonstrated below. z is a radical of
In one example, the lower limit of the relative magnetic permeability range of the alloy powder material of this embodiment may be 30, 50, 70, 90, 110 or 130, and the upper limit of the relative magnetic permeability range may be 300, 500, 700, 900, 1100 or 1300. In addition, generally, the relative permeability of the ceramic-magnetic material falls between about 10000-20000, and the relative permeability of the alloy powder material of this embodiment should be significantly smaller than that of the ceramic-magnetic material.
In addition, the first magnetic conductive members 10 of the present embodiment have substantially the same appearance shape, and each of the first magnetic conductive members 10 has at least two surfaces, and the first surface of one of the first magnetic conductive members 10 may face the second surface of another one of the first magnetic conductive members 10, thereby forming a stack structure. Here, the appearance shape may be not only a shape represented by a front view, a side view, an upper view or a lower view, but also a three-dimensional shape observed from an objective angle, and the embodiment is not limited thereto. In one example, one of the first magnetic conductive members 10a has two opposite surfaces, i.e., a first surface 100a and a second surface 102a, and the first surface 100a and the second surface 102a may have substantially the same shape and substantially the same area, so that the first magnetic conductive member 10a may be a cylindrical body in appearance. The shape of the first surface 100a and the second surface 102a is not limited in this embodiment, for example, the shape of the first surface 100a and the second surface 102a may be rectangular, square, circular or polygonal, so that the first magnetic conductive member 10a may be a cuboid, a square, a cylinder or a polygonal cylinder in appearance. In addition, the embodiment also does not limit that the first magnetic conductive member 10 is necessarily integrally formed, and in practice, the first magnetic conductive member 10 may also be formed by combining a plurality of small units (not shown) made of alloy powder material, and these small units do not necessarily need to be in close contact, as long as the combination does not interfere with the magnetic line path of the first magnetic conductive member 10.
In the present embodiment, the magnetic core assembly of the inductor 1 is roughly divided into the side portion 1a and the bending portion 1b from the appearance, and in the first magnetic conductive members 10 of the side portion 1a, a non-magnetic conductive member 12 is disposed between two adjacent first magnetic conductive members (for example, the first magnetic conductive member 10a and the first magnetic conductive member 10 b). In one example, the non-magnetic conductive member 12 is disposed between the second surface 102a of the first magnetic conductive member 10a and the first surface 100b of the first magnetic conductive member 10b, and an upper surface (not shown) of the non-magnetic conductive member 12 can directly contact the second surface 102a of the first magnetic conductive member 10a, and an upper surface (not shown) of the non-magnetic conductive member 12 can directly contact the first surface 100b of the first magnetic conductive member 10 b. In practice, the inductor 1 may comprise the magnetic core assembly and a coil (not shown), and when the coil is tightly wound around the outer side of the magnetic core assembly, the appearance shape of the inductor 1 is substantially similar to that of the magnetic core assembly.
In an example, in the first magnetic conductive member 10 of the side portion 1a of the present embodiment, the first surface 100a and the second surface 102a of the first magnetic conductive member 10a are not adjacent to each other, so as to avoid that the appearance shape of the side portion 1a is too curved to wind the coil when a plurality of first magnetic conductive members are stacked together, and thus the first surface 100a and the second surface 102a are not adjacent to each other and are two opposite surfaces, so that the plurality of first magnetic conductive member stacks may extend in a straight line direction. Of course, the embodiment does not limit the relative relationship between the first surface and the second surface of the first magnetic conductive member 10, and may not be two surfaces that are exactly opposite.
Referring to fig. 1, taking the first magnetic conductive member 10a and the first magnetic conductive member 10b of the side portion 1a as an example, the second surface 102a of the first magnetic conductive member 10a and the first surface 100b of the first magnetic conductive member 10b may be spaced apart from each other, rather than being in close contact or stacked directly together. In practice, the space between the second surface 102a of the first magnetic conductive member 10a and the first surface 100b of the first magnetic conductive member 10b is an air gap (air gap), and since the air gap itself is a medium with low magnetic permeability, the relative magnetic permeability of the inductor 1 can be made lower than that of a pure alloy powder material by adding the air gap. For example, the air gap in the direction of the magnetic field lines in the inductor 1 can be used to adjust the relative magnetic permeability of the inductor 1, and the larger the air gap in the direction of the magnetic field lines in the inductor 1, the more the relative magnetic permeability of the inductor 1 decreases.
Although fig. 1 shows that there are uniformly distributed air gaps between the first magnetic conductive members 10 of the side portion 1a, the practical application is not limited thereto, and as long as the air gaps in the magnetic field lines direction in the inductor 1 have the same width (for example, the first predetermined distance), the relative magnetic permeability of the inductor 1 should also be the same theoretically. For practical example, if the air gap distance in the magnetic field line direction in the inductor 1 is designed to be 10mm, in practice, the air gaps in the inductor 1 may be uniformly divided into 5 (2 mm ), or the air gaps may be unevenly divided into 4 (2 mm, 1mm, 4mm), or even the air gaps may be concentrated to make the whole inductor 1 have only one air gap (10 mm). Since the gap distance in the above examples is 10mm, the relative magnetic permeability of the inductor 1 should be the same, and the gap distance of the inductor 1 can be designed by one of ordinary skill in the art.
On the other hand, if there is only an air gap between the first magnetic conductive member 10a and the first magnetic conductive member 10b, an additional fixing structure is required to assemble the scattered first magnetic conductive members 10, which is not favorable for subsequent alignment, assembly or packaging, and in order to enable the first magnetic conductive member 10a and the first magnetic conductive member 10b to be connected more stably, the air gap between the first magnetic conductive member 10a and the first magnetic conductive member 10b of the side portion 1a may be inserted into the non-magnetic conductive member 12. The same purpose of adjusting the relative permeability of inductor 1 is achieved, as long as non-magnetic conducting element 12 is made of a non-magnetic conducting material, such as glass fibre.
In the example shown in fig. 1, the upper surface of the non-magnetic conductive member 12 may have an area substantially equal to the second surface 102a of the first magnetic conductive member 10a, and the lower surface of the non-magnetic conductive member 12 may have an area substantially equal to the first surface 100b of the first magnetic conductive member 10 b. Thus the non-magnetic conductive member 12 is similar in appearance to either of the first magnetic conductive members 10 except that the non-magnetic conductive member 12 is thinner and the first magnetic conductive member 10 is thicker. Of course, the embodiment is not limited to the structure of the non-magnetic conductive member 12 shown in fig. 1, please refer to fig. 1 and fig. 2A together. Fig. 2A is a schematic diagram illustrating a partial structure of an inductor according to an embodiment of the invention. As in fig. 1, the air gap between the first magnetic conductive member 10a and the first magnetic conductive member 10b is also filled with a solid non-magnetic conductive member 12 ', and the non-magnetic conductive member 12' may be made of a non-magnetic material, such as glass fiber.
Unlike fig. 1, fig. 2A illustrates another structure of the non-magnetic conductive member 12 ', the upper surface of the non-magnetic conductive member 12' may cover the second surface 102A of the first magnetic conductive member 10a, and the lower surface of the non-magnetic conductive member 12 'may cover the first surface 100b of the first magnetic conductive member 10b, so that the non-magnetic conductive member 12' just holds the first magnetic conductive member 10a and the first magnetic conductive member 10 b. Thereby, the non-magnetic conductive member 12' can assist the positioning of the first magnetic conductive member 10a and the first magnetic conductive member 10 b. The term "covered" in this embodiment may mean that the area of the upper surface of the non-magnetic conductive member 12 ' is slightly larger than the second surface 102a of the first magnetic conductive member 10a, and the area of the lower surface of the non-magnetic conductive member 12 ' is slightly larger than the first surface 100b of the first magnetic conductive member 10b, so that the non-magnetic conductive member 12 ' may also contact other sides of the first magnetic conductive member 10a and the first magnetic conductive member 10 b. In addition, the term "covered" in this embodiment may also mean that the second surface 102a of the first magnetic conductive member 10a is within the periphery of the upper surface of the non-magnetic conductive member 12 ', and the first surface 100b of the first magnetic conductive member 10b is within the periphery of the lower surface of the non-magnetic conductive member 12'.
Although fig. 2A illustrates the non-magnetic conductive member 12 'having the positioning function, the embodiment does not limit whether the non-magnetic conductive member 12' is in close contact with the first magnetic conductive member 10a and the first magnetic conductive member 10 b. In one example, the non-magnetic conductive member 12' is detachably assembled between the first magnetic conductive member 10a and the first magnetic conductive member 10b, and is not adhered or locked to the first magnetic conductive member 10a and the first magnetic conductive member 10 b. In addition, the present embodiment does not limit the appearance of the non-magnetic conductive member 12', please refer to fig. 2A and fig. 2B together. Fig. 2B is a schematic diagram illustrating a partial structure of an inductor according to another embodiment of the invention. Fig. 2B demonstrates that the non-magnetic conductive member 12 "need not be laminar, but could be a discrete structure or a structure with holes. However, since the upper surface of the non-magnetic conductive member 12 "can cover the second surface 102a of the first magnetic conductive member 10a, and the lower surface of the non-magnetic conductive member 12" can cover the first surface 100b of the first magnetic conductive member 10b, the non-magnetic conductive member 12 "can just as well clamp the first magnetic conductive member 10a and the first magnetic conductive member 10 b.
In other words, as can be seen from fig. 1, 2A and 2B, the non-magnetic member should be considered as a non-magnetic member of the present invention regardless of its shape and function of positioning the auxiliary first magnetic conductive member 10a and the auxiliary first magnetic conductive member 10B, as long as the non-magnetic member can be placed in the air gap to adjust the relative magnetic permeability of the inductor 1. In addition, the present invention does not limit the inductor 1 to use only the non-magnetic members having the same external shape, and the non-magnetic members having a plurality of external shapes may be used together in the inductor 1. It should be understood by those skilled in the art that if the air gap in the inductor 1 is uniformly distributed, the appearance of the non-magnetic members should be substantially the same, so that the more non-magnetic members are inserted in the direction of the magnetic field lines in the inductor 1, the lower the relative magnetic permeability of the inductor 1 can be. On the other hand, if the air gaps in the inductor 1 are non-uniformly distributed, the appearance shape of the non-magnetic conductive members can be freely adjusted according to the size of the air gaps, so that each air gap can be substantially placed into the non-magnetic conductive member with the corresponding size.
With continued reference to fig. 1, the side portion 1a functions to hope that the magnetic force lines will go forward along a fixed direction, and the curved portion 1b functions to guide the magnetic force lines to other directions, so that the inductor 1 has a substantially closed magnetic force line path through the combination of the plurality of side portions 1a and the curved portion 1 b. Therefore, unlike the first magnetic conductive members 10 in the side portion 1a, the present embodiment reduces the space between the first magnetic conductive members 10 in the bending portion 1b as much as possible to maintain the high relative magnetic permeability of the bending portion 1b and prevent the magnetic flux path from departing from the bending portion 1 b. In other words, the non-magnetic conductive member 12 may be provided only between the first magnetic conductive members 10 of the side portion 1a, and between the side portion 1a and the bent portion 1 b. In the first magnetic conductive members 10 of the bending portion 1b, the non-magnetic conductive member 12 is not necessarily disposed between two adjacent first magnetic conductive members (e.g., the first magnetic conductive member 10c and the first magnetic conductive member 10 d).
In one example, adjacent first magnetic conductive members (e.g., the first magnetic conductive member 10c and the first magnetic conductive member 10d) in the bending portion 1b may be in direct contact without a space therebetween, i.e., no non-magnetic conductive member can be placed. From the appearance, the plurality of first magnetic conductive members 10 in the bending portion 1b may be arranged in an L shape, an arc shape, or a trapezoid shape, and from another perspective, because of the direct contact relationship of the plurality of first magnetic conductive members 10, the whole may be regarded as one second magnetic conductive member, and thus the second magnetic conductive member may be in an L shape, an arc shape, or a trapezoid shape.
Although fig. 1 only shows one side portion 1a and one bending portion 1b, in practice, the side portion and the bending portion are not necessarily clearly distinguished, and one of ordinary skill in the art can define different numbers and ranges of the side portion and the bending portion. Of course, the inductor 1 may have more than one side portion 1a and one bending portion 1B, please refer to fig. 1, fig. 3A and fig. 3B together, where fig. 3A is a schematic diagram of a side portion and a bending portion according to an embodiment of the invention, and fig. 3B is a schematic diagram of a side portion and a bending portion according to another embodiment of the invention. As shown in fig. 3A, although the inductor 1 has the same structure, the side portions and the bent portions may define different ranges, for example, the inductor 1 may have four side portions 1c and four bent portions 1 d. Alternatively, as shown in fig. 3B, the inductor 1 may have only two side portions 1e and two bent portions 1 f. The present embodiment does not limit the dividing regions and the number of the side portions and the bending portions, as long as the inductor 1 can be stacked and combined into a hollow toroidal magnetic core assembly through a plurality of first magnetic conductive members 10, so that the inductor 1 has a substantially closed magnetic path.
In addition, the present embodiment does not limit that the bent portion 1b of the inductor 1 is necessarily formed by combining a plurality of first magnetic conductive members 10. In practice, the inductor may further include a plurality of first magnetic conductive members and a plurality of second magnetic conductive members. Referring to fig. 1 and 4 together, fig. 4 is a schematic structural diagram of an inductor according to another embodiment of the invention. As shown, fig. 4 is the same as fig. 1 in that the inductor 4 of fig. 4 can also define a side portion 4a and a bent portion 4b, and the side portion 4a also has a plurality of first magnetic conductive members 40, wherein a space (or air gap) can be formed between the second surface 402a of the first magnetic conductive member 40a and the first surface 400b of the first magnetic conductive member 40b, and a solid non-magnetic conductive member 42 can be inserted into the space. The descriptions of the first magnetic conductive member 40 and the non-magnetic conductive member 42 are the same as the previous embodiment, and the description of this embodiment is omitted here.
Although the embodiment of fig. 1 may be regarded as a second magnetic conductive member by stacking a plurality of first magnetic conductive members 10 in the bending portion 1b, the shape of each first magnetic conductive member 10 itself may be limited, and the plurality of first magnetic conductive members 10 may not be stacked in an L shape, an arc shape, or a trapezoid shape. Thus, unlike the previous embodiment, the inductor 4 of fig. 4 further demonstrates that there may be a plurality of second magnetically permeable members 44. In other words, unlike fig. 1 which illustrates the inductor 1 assembled with a hollow ring structure by using the same shape of magnetic conductive member (first magnetic conductive member), the inductor 4 of fig. 4 illustrates the inductor 4 assembled with a hollow ring structure by using magnetic conductive members with various shapes. Here, the present embodiment does not limit the shape of the surface of the second magnetic conductive member 44 contacting the non-magnetic conductive member 42, and whether the surface area of the second magnetic conductive member 44 contacting the non-magnetic conductive member 42 is the same as the surface area of the first magnetic conductive member 40 contacting the non-magnetic conductive member 42 (e.g., the first surface 400a or the second surface 402 a). In practice, even if the surface shape of the second magnetic conductive member 44 contacting the non-magnetic conductive member 42 is square, the surface shape of the first magnetic conductive member 40 contacting the non-magnetic conductive member 42 (e.g. the first surface 400a or the second surface 402a) is circular or not.
In one example, the second magnetic conductive member 44 of fig. 4 may be integrally formed and directly formed into an L shape, an arc shape or a trapezoid shape, in this case, the inductor 4 of fig. 4 exemplifies that the side portion 4a uses the first magnetic conductive member 40 with one appearance shape, and the bending portion 4b uses the second magnetic conductive member 44 with another appearance shape, so that the inductor 4 with a hollow ring structure is assembled by using more than two appearance shapes. Alternatively, the second magnetic conductive member 44 of fig. 4 may be stacked and combined by using a third magnetic conductive member (not shown), so that the second magnetic conductive member 44 looks L-shaped, arc-shaped or trapezoid in appearance. As will be appreciated by those skilled in the art, if the shape of the third magnetic conductive member is the same as the first magnetic conductive member 10 in fig. 1, the embodiment in fig. 4 is the same as the embodiment in fig. 1. In one example, the shape of the third magnetic conductive member is different from the shape of the first magnetic conductive member 40, so the shape of the second magnetic conductive member 44 stacked by the third magnetic conductive member may be different from the shape of the second magnetic conductive member stacked by the first magnetic conductive member 40.
The second magnetic conductive member 44 of the present embodiment is not limited to the L-shaped structure shown in fig. 4, but may be an arc-shaped or trapezoid-shaped structure. Referring to fig. 4, 5A and 5B together, fig. 5A is a schematic view illustrating a second magnetic conductive member according to an embodiment of the invention, and fig. 5B is a schematic view illustrating a second magnetic conductive member according to another embodiment of the invention. As shown in fig. 5A, fig. 5A illustrates that the second magnetic conductive member 44 'may have an arc-shaped structure, which is different from the second magnetic conductive member 44 of fig. 4 having a specific bending angle, and the second magnetic conductive member 44' of fig. 5A may not have a specific bending angle. In addition, fig. 5B demonstrates that the second magnetic conductive member 44 ″ may have a trapezoidal structure, which is different from the second magnetic conductive member 44 of fig. 4 having a specific bending angle and the second magnetic conductive member 44' of fig. 5A having a specific arc, the second magnetic conductive member 44 ″ of fig. 5B may have neither a specific bending angle nor a specific arc, and the connection portion 4a is made as an inclined surface, so that when the second magnetic conductive member 44 ″ of fig. 5B is used to replace the second magnetic conductive member 44 of fig. 4, the inductor 4 may still have a substantially closed magnetic line path.
It should be noted that the exemplary schematic diagrams of fig. 1, fig. 2A, fig. 2B, fig. 3A, fig. 3B, fig. 4, fig. 5A and fig. 5B may be a side view viewed from one side of the inductor or a cross-sectional view viewed from a middle cross-section of the inductor, and the invention is not limited thereto.
In summary, the inductor provided by the present invention can be implemented by stacking a plurality of magnetic conductive members, and particularly, by stacking a plurality of magnetic conductive members made of alloy powder material to form a magnetic core assembly, and inserting a non-magnetic conductive member between the plurality of magnetic conductive members to adjust the relative magnetic permeability of the whole magnetic core assembly. Therefore, the problem that the relative magnetic permeability is too high and is not beneficial to storing electric energy is avoided, and the inductor with smaller volume can be designed while the electronic characteristic of the inductor is maintained.
The above-described embodiments and/or implementations are only for illustrating the preferred embodiments and/or implementations of the present technology, and are not intended to limit the implementations of the present technology in any way, and those skilled in the art can make many modifications or changes without departing from the scope of the technology disclosed in the present disclosure, but should be construed as technology or implementations that are substantially the same as the present technology.
Claims (18)
1. An inductor, comprising:
the magnetic conductive parts are arranged into a hollow ring shape, and the hollow ring shape is at least provided with a side part and a bending part;
among the first magnetic conduction members on the side portion, a non-magnetic conduction member is arranged between every two adjacent first magnetic conduction members, and the first magnetic conduction members are made of alloy powder materials.
2. The inductor according to claim 1, wherein each of the first magnetically permeable members has a first surface and a second surface, the first surface of the same first magnetically permeable member is not adjacent to the second surface, and the non-magnetically permeable member has an upper surface and a lower surface, the upper surface contacts the first surface of one of the first magnetically permeable members, and the lower surface contacts the second surface of the other of the first magnetically permeable members.
3. The inductor of claim 2, wherein the first side and the second side are substantially equal in area.
4. The inductor as recited in claim 3, wherein the upper surface of the non-magnetic member is substantially equal in area to the first surface and the lower surface of the non-magnetic member is substantially equal in area to the second surface.
5. The inductor according to claim 1, wherein adjacent ones of the first magnetically permeable members of the bend are in direct contact.
6. The inductor as claimed in claim 5 wherein the first magnetic conductive members of the curved portion are substantially arranged in an L-shape, an arc-shape or a trapezoid shape.
7. The inductor as recited in claim 1, wherein the non-magnetic conductive member is sheet-like and is a non-magnetic conductive material.
8. An inductor, comprising:
the magnetic core assembly is in a hollow ring shape and is provided with a side part and a bent part, the first magnetic conduction parts are positioned on the side part, and the second magnetic conduction parts are positioned on the bent part;
the non-magnetic conducting pieces are arranged between the adjacent first magnetic conducting pieces in the side portion and between the side portion and the bent portion, and the first magnetic conducting pieces and the second magnetic conducting pieces are made of alloy powder materials.
9. The inductor as recited in claim 8, wherein each of the first magnetically permeable members has a first side and a second side, the non-magnetically permeable member covering at least the first side or the second side.
10. The inductor as claimed in claim 8 wherein each of the second magnetic conductive members is formed by combining a plurality of third magnetic conductive members, and the third magnetic conductive members are tightly connected to each other.
11. The inductor according to claim 10, wherein any one of the third magnetic conductive members has substantially the same shape as any one of the first magnetic conductive members, and the shapes of the third magnetic conductive members are substantially arranged in an L-shape, an arc shape, or a trapezoid shape.
12. The inductor as claimed in claim 8, wherein each of the second magnetic conductive members is integrally formed, and each of the second magnetic conductive members has a substantially L-shaped, arc-shaped or trapezoid shape.
13. The inductor as recited in claim 8, wherein the non-magnetic conductive member is sheet-like and made of a non-magnetic conductive material.
14. An inductor, comprising:
a magnetic core assembly, comprising a plurality of first magnetic conductive members, wherein at least one first air gap is arranged between the first magnetic conductive members, the at least one first air gap has a first preset interval along a first surrounding direction, and the first magnetic conductive members are made of alloy powder materials;
wherein the first winding direction is a magnetic line direction inside the magnetic core assembly.
15. The inductor as recited in claim 14, wherein the core assembly is in a hollow toroid, zigzag or a multi-toroid configuration.
16. The inductor of claim 14 wherein at least one non-magnetic member is disposed in the at least one first air gap.
17. The inductor as claimed in claim 14, wherein a plurality of first air gaps are further disposed between the first magnetic conductive members, and the sum of the first air gaps along the first winding direction is the first predetermined distance.
18. The inductor as claimed in claim 17 wherein each of the first air gaps has a non-magnetic member disposed therein.
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| CN201810914148.4A CN110828129A (en) | 2018-08-13 | 2018-08-13 | Inductor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810914148.4A CN110828129A (en) | 2018-08-13 | 2018-08-13 | Inductor |
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| CN110828129A true CN110828129A (en) | 2020-02-21 |
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| CN201810914148.4A Pending CN110828129A (en) | 2018-08-13 | 2018-08-13 | Inductor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109741917A (en) * | 2019-03-06 | 2019-05-10 | 中国科学院重庆绿色智能技术研究院 | A kind of inductor of not wide air gap composition |
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| CN102682952A (en) * | 2011-03-08 | 2012-09-19 | 株式会社日立制作所 | Reactor and power converter using the same |
| CN105097209A (en) * | 2014-04-25 | 2015-11-25 | 台达电子企业管理（上海）有限公司 | Magnetic element |
| CN108022727A (en) * | 2016-11-04 | 2018-05-11 | 福特全球技术公司 | Inductor cooling system and method |
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| JPH1140434A (en) * | 1997-07-14 | 1999-02-12 | Nissin Electric Co Ltd | Iron core for reactor |
| CN102682952A (en) * | 2011-03-08 | 2012-09-19 | 株式会社日立制作所 | Reactor and power converter using the same |
| CN202422932U (en) * | 2012-02-01 | 2012-09-05 | 鸿康磁业电子（昆山）有限公司 | Improved inductor |
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| CN109741917B (en) * | 2019-03-06 | 2020-12-18 | 中国科学院重庆绿色智能技术研究院 | Inductor that unequal width air gap is constituteed |
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