Large ripple circuit application inductor and inductor

Abstract

The utility model provides a large ripple circuit application inductor and inductor, including inductor body, inductor body includes magnetic core body, buckle skeleton and coil, the coil is wound on the buckle skeleton, buckle skeleton is made of insulating material, buckle skeleton is used for separating magnetic core body and coil, and the coil is made of insulating material. The magnetic core body comprises a magnetic core middle column body and a magnetic core side column body, the buckling framework is arranged on the magnetic core middle column body in a sleeving mode, and the magnetic core side column body is arranged on the outer side of the buckling framework and the outer side of the coil. The magnetic core body is designed into a structure that the magnetic core side column surrounds the coil and the insulating framework instead of a traditional structure that the magnetic core is surrounded by the coil and the insulating framework, so that the magnetic core side column is exposed outside, the contact area of the magnetic core for heat dissipation with the external environment is larger, heat dissipation is more facilitated, and the service life of the magnetic core is prolonged. Therefore, the magnetic core heat generated by large ripples can be better radiated.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic inductors, in particular to an inductor and an inductance for large ripple circuit applications. Background Technique

[0002] The ripple of an inductor is an important indicator causing inductor loss. The larger the ripple current, the higher the magnetic induction intensity ΔB value of the magnetic core, and then the higher the loss, which will lead to more serious heating of the magnetic core. However, traditional power inductors consider more about the heat dissipation of the coil rather than that of the magnetic core. Therefore, in some special large ripple working circuits, due to the influence of ripple, the actual application effect of traditional power inductors is not ideal, and it is easy to have a high temperature rise and affect the overall efficiency of the machine. In addition, traditional power inductors use insulating paper to wrap the middle column of the magnetic core for insulation, and then tape is pasted for fixation after wrapping with insulating paper, making the assembly process of the middle column of the magnetic core complex. Content of the Utility Model

[0003] The purpose of the utility model is to improve and innovate the disadvantages and problems in the background technique, solve the problem of poor application effect of the sensing inductor in a large ripple circuit, and provide an inductor and an inductance for large ripple circuit applications.

[0004] According to the first aspect of the utility model, there is provided an inductor for large ripple circuit applications, including an inductor body, the inductor body includes a magnetic core body, a snap-on skeleton and a coil, the coil is wound on the snap-on skeleton, the snap-on skeleton is made of an insulating material, and the snap-on skeleton is used to separate the magnetic core body and the coil. The magnetic core body includes a magnetic core middle column body and a magnetic core side column body, the snap-on skeleton is sleeved on the magnetic core middle column body, and the magnetic core side column body is arranged outside the snap-on skeleton and the coil.

[0005] Further, the magnetic core middle column body includes a first magnetic core middle column and a second magnetic core middle column, the magnetic core side column body includes a first magnetic core side column and a second magnetic core side column, the first magnetic core middle column and the first magnetic core side column are integrally die-cast, the second magnetic core middle column and the second magnetic core side column are integrally die-cast, the first magnetic core middle column and the second magnetic core middle column are bonded together, and the first magnetic core side column and the second magnetic core side column are bonded together.

[0006] Further, the snap-on skeleton includes a first skeleton and a second skeleton spliced together.

[0007] Further, the first skeleton includes a first winding cylinder, a first partition board and a first limiting base integrally injection-molded, the second skeleton includes a second winding cylinder, a second partition board and a second limiting base integrally injection-molded, a protruding portion is arranged at one end of the first winding cylinder close to the second skeleton, and a recessed portion adapted to the protruding portion is opened at one end of the second winding cylinder close to the first skeleton.

[0008] A further solution is that the middle column of the first magnetic core passes through the first partition plate and the first winding cylinder and then is connected to the middle column of the second magnetic core, and the middle column of the second magnetic core passes through the second partition plate and the second winding cylinder and then is connected to the middle column of the first magnetic core.

[0009] A further solution is that the first limiting base is used to support the side column of the first magnetic core, and the second limiting base is used to support the side column of the second magnetic core.

[0010] A further solution is that both the middle column of the first magnetic core and the middle column of the second magnetic core are in a cylindrical shape.

[0011] According to the second aspect of the present invention, an inductor is provided, which includes the large ripple circuit application inductor as described in any one of the above and a housing. A plurality of inductor bodies are accommodated in the housing, and a baffle for separating the inductor bodies is provided at intervals in the housing.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The present invention designs the magnetic core body into a structure in which the side columns of the magnetic core surround the coil and the insulating skeleton, rather than the traditional structure in which the coil and the insulating skeleton surround the magnetic core, so that the side columns of the magnetic core are exposed to the outside. Therefore, the contact area between the magnetic core and the external environment for heat dissipation is larger, which is more conducive to heat dissipation. Therefore, it has a better heat dissipation effect on the heat generated by the magnetic core due to large ripples;

[0013] (2) The present invention sleevs the snap-together skeleton outside the middle column of the magnetic core, so that the middle column of the magnetic core is separated from the coil, and the snap-together skeleton plays an insulating role. Compared with the insulating method of using insulating paper to wrap the middle column of the magnetic core and then fixing it with tape, the assembly efficiency of the present invention is higher. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 It is a three-dimensional structure diagram of the inductor provided by the embodiment of the present invention;

[0016] Figure 2 It is a three-dimensional structure diagram of a large ripple circuit application inductor provided by the embodiment of the present invention;

[0017] Figure 3 It is a three-dimensional structure diagram of the magnetic core body provided by the embodiment of the present invention;

[0018] Figure 4The three-dimensional structure diagram of the snap-on skeleton after assembly provided by the embodiment of the present utility model;

[0019] Figure 5 The three-dimensional structure diagram of the snap-on skeleton after disassembly provided by the embodiment of the present utility model;

[0020] Reference numerals: Inductor body 1, housing 2, baffle 3, magnetic core body 11, snap-on skeleton 12, coil 13, magnetic core middle column body 111, magnetic core side column body 112, first magnetic core middle column 1111, second magnetic core middle column 1112, first magnetic core side column 1121, second magnetic core side column 1122, first skeleton 121, second skeleton 122, first winding cylinder 1211, first partition 1212, first limiting base 1213, second winding cylinder 1221, second partition 1222, second limiting base 1223, protruding portion 12111, recessed portion 12211. Detailed implementation manners

[0021] In order to make the objectives, features, and advantages of the present utility model more obvious and understandable, the following will describe the detailed implementation manners of the present utility model with reference to the accompanying drawings.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific implementation manners and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0024] Please refer to Figures 2 - 5, the present utility model provides an inductor for large ripple circuit applications, including an inductor body 1. The inductor body 1 includes a magnetic core body 11, a snap-on skeleton 12, and a coil 13. The coil 13 is wound around the snap-on skeleton 12, and the snap-on skeleton 12 is made of an insulating material and is used to separate the magnetic core body 11 and the coil 13. Compared with the insulation method of wrapping the magnetic core with insulating paper and then fixing it with tape, the inductor assembly efficiency of the present utility model is higher. In addition, the magnetic core body 11 includes a magnetic core middle column body 111 and a magnetic core side column body 112. The snap-on skeleton 12 is sleeved on the magnetic core middle column body 111, and the magnetic core side column body 112 is arranged outside the snap-on skeleton 12 and the coil 13, that is, the magnetic core side column body 112 is exposed outside the snap-on skeleton 12 and the coil 13. Therefore, the contact area of the magnetic core body 11 with the external environment for heat dissipation is larger, which is more conducive to heat dissipation. So, it has a better heat dissipation effect on the heat generated by the magnetic core due to large ripple.

[0025] Please refer to Figure 3 , the magnetic core middle column body 111 includes a symmetrically arranged first magnetic core middle column 1111 and a second magnetic core middle column 1112, and the magnetic core side column body 112 includes a symmetrically arranged first magnetic core side column 1121 and a second magnetic core side column 1122. The first magnetic core middle column 1111 and the first magnetic core side column 1121 are integrally die-cast, and the second magnetic core middle column 1112 and the second magnetic core side column 1122 are also integrally die-cast. The first magnetic core middle column 1111 and the second magnetic core middle column 1112 are bonded to each other with glue, and the first magnetic core side column 1121 and the second magnetic core side column 1122 are also bonded to each other with glue.

[0026] Preferably, both the first magnetic core middle column 1111 and the second magnetic core middle column 1112 are cylindrical, so that the coil 13 can be formed by vertical winding with a circular machine, and the coil 13 does not need to be bent and wound, and the winding efficiency is high.

[0027] Please refer to Figure 4 and Figure 5, the snap-together skeleton 12 includes a first skeleton 121 and a second skeleton 122 that are spliced together. The first skeleton 121 includes an integrally injection-molded first wire-winding cylinder 1211, a first partition 1212, and a first limiting base 1213. The middle parts of the first wire-winding cylinder 1211 and the first partition 1212 are hollowed out, so that the first magnetic core middle column 1111 can pass through the first partition 1212 and the first wire-winding cylinder 1211 and then be connected to the second magnetic core middle column 1112. The second skeleton 122 includes an integrally injection-molded second wire-winding cylinder 1221, a second partition 1222, and a second limiting base 1223. The middle parts of the second wire-winding cylinder 1221 and the second partition 1222 are hollowed out, so that the second magnetic core middle column 1112 can pass through the second partition 1222 and the second wire-winding cylinder 1221 and then be connected to the first magnetic core middle column 1111. The first limiting base 1213 is installed at the bottom of the first partition 1212, and the second limiting base 1223 is installed at the bottom of the second partition 1222. The first limiting base 1213 is used to support the first magnetic core side column 1121, and the second limiting base 1223 is used to support the second magnetic core side column 1122.

[0028] During the assembly process, first, the first skeleton 121 and the second skeleton 122 are spliced together to form the snap-together skeleton 12. Then, the coil 13 is wound around the snap-together skeleton 12. Next, the first magnetic core middle column 1111 passes through the first partition 1212 and the first wire-winding cylinder 1211, and the second magnetic core middle column 1112 passes through the second partition 1222 and the second wire-winding cylinder 1221; and the first magnetic core middle column 1111 is bonded to the second magnetic core middle column 1112 with glue, and at the same time, the first magnetic core side column 1121 is bonded to the second magnetic core side column 1122 with glue.

[0029] Preferably, please refer to Figure 5 , a protruding portion 12111 is provided at one end of the first wire-winding cylinder 1211 close to the second skeleton 122, and a recessed portion 12211 adapted to the protruding portion 12111 is provided at one end of the second wire-winding cylinder 1221 close to the first skeleton 121. Through the mutual cooperation of the protruding portion 12111 and the recessed portion 12211, it is convenient to splice the first skeleton 121 and the second skeleton 122 together.

[0030] In addition, please refer to Figure 1 , the present utility model also provides an inductor, which includes the large ripple circuit application inductor described above and a housing 2. A plurality of inductor bodies 1 are accommodated in the housing 2, and a baffle 3 for separating the inductor bodies 1 is arranged at intervals in the housing 2. The baffle 3 is made of aluminum material, and the baffle 3 is used to avoid electromagnetic interference between adjacent inductor bodies 1. The housing 2 is an aluminum heat dissipation housing, which can play an auxiliary heat dissipation role for the inductor body 1.

[0031] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0032] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. An inductor for a large ripple circuit application, characterized in that: It includes an inductor body (1), and the inductor body (1) includes a magnetic core body (11), a snap-on skeleton (12) and a coil (13). The coil (13) is wound around the snap-on skeleton (12). The snap-on skeleton (12) is made of an insulating material and is used to separate the magnetic core body (11) and the coil (13). The magnetic core body (11) includes a magnetic core middle column body (111) and a magnetic core side column body (112). The snap-on skeleton (12) is sleeved on the magnetic core middle column body (111), and the magnetic core side column body (112) is arranged outside the snap-on skeleton (12) and the coil (13).

2. An inductor for a large ripple circuit application according to claim 1, characterized in that: The magnetic core middle column body (111) includes a first magnetic core middle column (1111) and a second magnetic core middle column (1112), and the magnetic core side column body (112) includes a first magnetic core side column (1121) and a second magnetic core side column (1122). The first magnetic core middle column (1111) and the first magnetic core side column (1121) are integrally die-cast, the second magnetic core middle column (1112) and the second magnetic core side column (1122) are integrally die-cast, the first magnetic core middle column (1111) and the second magnetic core middle column (1112) are bonded together, and the first magnetic core side column (1121) and the second magnetic core side column (1122) are bonded together.

3. An inductor for a large ripple circuit application according to claim 2, characterized in that: The snap-on skeleton (12) includes a first skeleton (121) and a second skeleton (122) spliced together.

4. An inductor for a large ripple circuit application according to claim 3, characterized in that: The first skeleton (121) includes a first winding cylinder (1211), a first partition plate (1212) and a first limiting base (1213) integrally injection-molded. The second skeleton (122) includes a second winding cylinder (1221), a second partition plate (1222) and a second limiting base (1223) integrally injection-molded. A protruding portion (12111) is provided at one end of the first winding cylinder (1211) close to the second skeleton (122), and a recessed portion (12211) adapted to the protruding portion (12111) is provided at one end of the second winding cylinder (1221) close to the first skeleton (121).

5. An inductor for a large ripple circuit application according to claim 4, characterized in that: The first magnetic core middle column (1111) passes through the first partition plate (1212) and the first winding cylinder (1211) and then is connected to the second magnetic core middle column (1112). The second magnetic core middle column (1112) passes through the second partition plate (1222) and the second winding cylinder (1221) and then is connected to the first magnetic core middle column (1111).

6. An inductor for a large-ripple circuit application according to claim 5, characterized in that: The first limiting base (1213) is used to support the first magnetic core side column (1121), and the second limiting base (1223) is used to support the second magnetic core side column (1122).

7. An inductor for a large ripple circuit application according to claim 2, characterized in that: Both the first magnetic core middle column (1111) and the second magnetic core middle column (1112) are in the shape of a cylinder.

8. An inductor, characterized in that: It includes the large ripple circuit application inductor according to any one of claims 1-7 and a housing (2). A plurality of inductor bodies (1) are accommodated in the housing (2), and a baffle (3) for separating the inductor bodies (1) is provided at intervals in the housing (2).

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