Transformer integrated inductor structure

Abstract

The utility model discloses an integrated inductor structure of a transformer, which belongs to the technical field of magnetic components and comprises a base, a transformer portion, an inductor portion and a wire connecting portion. A transformer part and an inductor part are respectively arranged on the base; the inductance part is adjacently arranged on the side surface of the transformer part; the wire connecting part is connected with the transformer part and the inductor part, and the end of the wire connecting part is inserted and connected to the base. Each component is borne and connected on the base, and the transformer part and the inductor part are tightly connected on the base; the transformer part and the inductance part are connected through the wiring part, so that the transformer part and the inductance part are connected with an external circuit, the base is fixed to the end of one side of the wiring part, the overall structure of the transformer integrated inductor scheme is more compact, and therefore the transformer integrated inductor structure can have a wider application range. Therefore, the transformer integrated inductor structure solves the technical problem of how to simplify the layout size of the transformer and the inductance element.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic components, in particular to a transformer integrated inductor structure. Background Art

[0002] Inductance is a property of a closed loop and also a physical quantity. When current passes through a coil, a magnetic field is induced in the coil, and the induced magnetic field generates an induced current to resist the current passing through the coil. This interaction between the current and the coil is called electrical reactance, or inductance. An inductor is a circuit element that utilizes the inductance property and is usually used as an energy storage element. The original model of a conventional inductor is a cylindrical coil wound by a wire. When current i passes through the coil, a magnetic flux Φ is generated in the coil and energy is stored. Characterizing an inductor, or simply an inductor, generates magnetic flux. The parameter of the ability to store a magnetic field, also called inductance, is represented by L, which is numerically equal to the magnetic flux generated by a unit current. Inductor elements refer to inductors or inductor coils and various transformers in general.

[0003] A transformer is a magnetic component that uses the principle of series resonance or parallel resonance. It can generate large current and high voltage and can generally be used in circuits with large capacitance or inductance loads. By using the parallel resonance of the load and the device, a larger load current can be obtained with a smaller excitation current; by using the series resonance of the load and the device, a high voltage can be obtained on the load with a lower excitation voltage.

[0004] In addition, the transformer is one of the essential components in the design of switching power supplies and an important part of switching power supplies. With the rapid development of electronic power technology, high-frequency switching power supplies have been widely used in many fields such as computers, communications and railways, and have achieved significant economic benefits. With the development of rail transportation and new energy industries, the requirements for the installation and use environment of reactors are getting higher and higher. Generally, they are required to have compact structure, high reliability, high power density, low cost and easy installation. In the technical solution of traditional transformers, series resonant transformers and parallel resonant transformers cannot further control the actual installation size of the controller due to their structural composition.

[0005] Based on this, Chinese Patent CN101308724B discloses a magnetic integration structure for a transformer and an inductor, which has a "field" - shaped closed magnetic core. A transformer winding is wound around one of the central columns of the "field" - shaped magnetic core, and an inductor winding is wound around the other central column of the "field" - shaped magnetic core. A transformer air gap is provided on the central column around which the transformer winding is wound, and an inductor air gap is provided on the central column around which the inductor winding is wound. The magnetic fluxes generated by the transformer winding and the inductor winding are opposite in direction on the common magnetic core of the two. This magnetic integration structure is stable in spatial position, and moreover, it can also miniaturize the overall volume of the magnetic components to improve the power density of the power electronic converter.

[0006] However, the above - disclosed magnetic integration structure still has the technical problem of insufficient compactness in volume. Specifically, with the progress of science and technology and the development of electronic technology, more and more electronic devices tend to be miniaturized. LLC, that is, the resonant transformer, demonstrates advantages that cannot be compared with ordinary series - resonant transformers and parallel - resonant transformers due to its ability to work under no - load conditions and the ability of the resonant tank current to reflect the load level. Therefore, it has higher application value. The LLC transformer is improved by adding a parallel inductor on the basis of the traditional LC second - order resonant transformer. It has the advantages of a high switching operating frequency, small switching losses, a wide allowable input voltage range, high efficiency, light weight, low EMI noise, and small switching stress. However, with the reduction of the installation space, there are higher requirements for the volume of the LLC transformer. Since the LLC transformer needs to integrate a resonant inductor, its volume is limited by the volume of the resonant inductor, thus unable to meet the technical requirements of a smaller installation space. Summary of the Utility Model

[0007] Based on this, in view of the technical problem of streamlining the layout dimensions of the transformer and the inductor components, it is necessary to provide a transformer - integrated inductor structure.

[0008] A transformer integrated inductor structure, comprising: a base, a transformer part, an inductor part and a connection part; the transformer part and the inductor part are respectively arranged on the base; the inductor part is arranged adjacent to the side of the transformer part; the connection part connects the transformer part and the inductor part respectively, and the end of the connection part is inserted and connected to the base. The transformer part has a first magnetic core, a second magnetic core, a sheet winding, an arc winding and a spacer; the first magnetic core and the second magnetic core are relatively fitted and connected; the winding unit of the sheet winding is sheet-shaped, and the winding unit of the arc winding is arc-shaped, and several groups of sheet windings and several groups of arc windings are alternately connected and arranged between the first magnetic core and the second magnetic core; each sheet winding is isolated from each arc winding by the spacer; a sheet winding or an arc winding adjacent to the first magnetic core or the second magnetic core is isolated by the spacer; the lower end of each sheet winding is inserted into the base. The inductor part has a third magnetic core, a magnetic core winding and a magnetic core spacer; the third magnetic core is arranged close to the second magnetic core, the magnetic core winding is arranged between the third magnetic core and the second magnetic core, and the magnetic core spacer is arranged between the magnetic core winding and the third magnetic core or between the magnetic core winding and the second magnetic core.

[0009] Furthermore, the connection part has a transformer connection group and an inductor connection group.

[0010] Furthermore, the transformer connection group is connected to the transformer part and the base respectively.

[0011] Furthermore, the inductor connection group is connected to the inductor part and the base respectively.

[0012] Furthermore, the sheet-shaped winding has pins; and the lower end of each sheet-shaped winding is respectively provided with two pins.

[0013] Furthermore, the base has a wiring jack and a sheet jack.

[0014] Furthermore, the connection jack is connected to one end of the transformer connection group or one end of the inductor connection group.

[0015] Furthermore, each of the sheet-shaped jacks is correspondingly connected to one of the pins.

[0016] Furthermore, the base is also provided with a transformer embedding groove and an inductor embedding groove.

[0017] Furthermore, the transformer part is arranged on the transformer embedding groove, and the inductor part is arranged on the inductor embedding groove.

[0018] In summary, the utility model transformer integrated inductor structure is respectively provided with a base, a transformer part, an inductor part and a connecting part; the transformer part and the inductor part are respectively arranged on the base; the inductor part is arranged adjacent to the side of the transformer part; the connecting part connects the transformer part and the inductor part respectively, and the end of the connecting part is inserted and connected to the base. The base carries and connects various components, and the transformer part and the inductor part are closely connected and arranged on the base; the connecting part is then used to connect the transformer part and the inductor part respectively, so as to connect the transformer part and the inductor part to the external circuit, and the base fixes the end of one side of the connecting part, so as to make the overall structure of the transformer integrated inductor solution more compact, so that it can have a wider range of applications. Therefore, the utility model transformer integrated inductor structure solves the technical problem of how to simplify the layout size of the transformer and inductor elements. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the transformer integrated inductor structure of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the other direction of the structure of the transformer integrated inductor structure of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the other direction of the partial structure of the transformer integrated inductor structure of the utility model. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0027] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0028] Please also read Figures 1 to 3The utility model transformer integrated inductor structure comprises: a base 1, a transformer part 2, an inductor part 3 and a connecting part 4; the transformer part 2 and the inductor part 3 are respectively arranged on the base 1; the inductor part 3 is adjacently arranged on the side of the transformer part 2; the connecting part 4 is respectively connected to the transformer part 2 and the inductor part 3, and the end of the connecting part 4 is inserted and connected to the base 1. The transformer part 2 comprises a first magnetic core 201, a second magnetic core 202, a sheet-shaped winding 203, an arc winding 204 and a spacer 205; the first magnetic core 201 and the second magnetic core 202 are relatively fitted and connected; the winding unit of the sheet-shaped winding 203 is sheet-shaped, and the winding unit of the arc winding 204 is arc-shaped, and several groups of the sheet-shaped windings 203 and several groups of the arc windings 204 are alternately connected and arranged between the first magnetic core 201 and the second magnetic core 202; each sheet-shaped winding 203 is isolated from each arc winding 204 by the spacer 205; a sheet-shaped winding 203 or an arc winding 204 adjacent to the first magnetic core 201 or the second magnetic core 202 is isolated by the spacer 205; the lower end of each sheet-shaped winding 203 is inserted into the base 1. The inductor part 3 has a third magnetic core 301, a magnetic core winding 302 and a magnetic core spacer 303; the third magnetic core 301 is arranged close to the second magnetic core 202, the magnetic core winding 302 is arranged between the third magnetic core 301 and the second magnetic core 202, and the magnetic core spacer 303 is arranged between the magnetic core winding 302 and the third magnetic core 301 or between the magnetic core winding 302 and the second magnetic core 202.

[0029] Specifically, in the transformer integrated inductor structure scheme of the utility model, the base 1 carries and connects various components, and the transformer part 2 and the inductor part 3 are closely connected and arranged on the base 1; the connecting part 4 is then used to connect the transformer part 2 and the inductor part 3 respectively, so as to connect the transformer part 2 and the inductor part 3 to an external circuit, and the base 1 then fixes the end of one side of the connecting part 4, so as to make the overall structure of the transformer integrated inductor scheme more compact, so that it can have a wider range of applications.

[0030] Furthermore, the connection part 4 has a transformer connection group 401 and an inductor connection group 402; the transformer connection group 401 connects the transformer part 2 and the base 1 respectively; the inductor connection group 402 connects the inductor part 3 and the base 1 respectively. The sheet-shaped winding 203 has pins 203a; the lower end of each sheet-shaped winding 203 is respectively provided with two pins 203a. The base 1 has a connection socket 101 and a sheet-shaped socket 102; the connection socket 101 is connected to one end of the transformer connection group 401 or one end of the inductor connection group 402. Each sheet-shaped socket 102 is connected to a corresponding pin 203a. Specifically, the base 1 can serve as a connection hub for various components and allow each component to be stably connected thereto.

[0031] Furthermore, the base 1 is also provided with a transformer embedding groove 103 and an inductor embedding groove 104 ; the transformer part 2 is arranged on the transformer embedding groove 103 , and the inductor part 3 is arranged on the inductor embedding groove 104 .

[0032] Furthermore, the base 1 is also provided with a transformer window 105 and an inductor window 106 ; the transformer window 105 is provided below the transformer part 2 , and the inductor window 106 is provided below the inductor part 3 .

[0033] In summary, the utility model transformer integrated inductor structure is respectively provided with a base 1, a transformer part 2, an inductor part 3 and a connection part 4; the transformer part 2 and the inductor part 3 are respectively arranged on the base 1; the inductor part 3 is arranged adjacent to the side of the transformer part 2; the connection part 4 connects the transformer part 2 and the inductor part 3 respectively, and the end of the connection part 4 is inserted and connected to the base 1. The base 1 carries and connects various components, and the transformer part 2 and the inductor part 3 are closely connected and arranged on the base 1; the connection part 4 is used to connect the transformer part 2 and the inductor part 3 respectively, so as to connect the transformer part 2 and the inductor part 3 with the external circuit, and the base 1 fixes the end of one side of the connection part 4, so as to make the overall structure of the transformer integrated inductor solution more compact, so that it can have a wider range of applications. Therefore, the utility model transformer integrated inductor structure solves the technical problem of how to simplify the layout size of the transformer and inductor elements.

[0034] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0035] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A transformer integrated inductor structure, characterized in that: It includes: A base (1), a transformer part (2), an inductor part (3) and a connecting part (4); the transformer part (2) and the inductor part (3) are respectively arranged on the base (1); the inductor part (3) is arranged adjacent to the side of the transformer part (2); the connecting part (4) is respectively connected to the transformer part (2) and the inductor part (3), and the end of the connecting part (4) is inserted and connected to the base (1); the transformer part (2) has a first magnetic core (201 ), a second magnetic core (202), a sheet-shaped winding (203), an arc winding (204), and a spacer (205); the first magnetic core (201) and the second magnetic core (202) are relatively fitted and connected; the winding unit of the sheet-shaped winding (203) is sheet-shaped, and the winding unit of the arc winding (204) is arc-shaped; a plurality of groups of the sheet-shaped windings (203) and a plurality of groups of the arc windings (204) are alternately connected and arranged between the first magnetic core (201) and the second magnetic core (202); The second magnetic core (202) is located between the sheet-shaped winding (203) and the arc winding (204); each sheet-shaped winding (203) is isolated from each arc winding (204) by the spacer (205); a sheet-shaped winding (203) or an arc winding (204) adjacent to the first magnetic core (201) or the second magnetic core (202) is isolated by the spacer (205); the lower end of each sheet-shaped winding (203) is inserted into the base (1); the inductor (3) has A third magnetic core (301), a magnetic core winding (302) and a magnetic core spacer (303); the third magnetic core (301) is arranged in close proximity to the second magnetic core (202), the magnetic core winding (302) is arranged between the third magnetic core (301) and the second magnetic core (202), and the magnetic core spacer (303) is arranged between the magnetic core winding (302) and the third magnetic core (301) or between the magnetic core winding (302) and the second magnetic core (202).

2. The transformer integrated inductor structure according to claim 1, characterized in that: The connection part (4) comprises a transformer connection group (401) and an inductor connection group (402).

3. The transformer integrated inductor structure according to claim 2, characterized in that: The transformer connection group (401) is respectively connected to the transformer part (2) and the base (1).

4. The transformer integrated inductor structure according to claim 3, characterized in that: The inductor connection group (402) is respectively connected to the inductor part (3) and the base (1).

5. The transformer integrated inductor structure according to claim 4, characterized in that: The sheet-shaped winding (203) has pins (203a); the lower end of each sheet-shaped winding (203) is respectively provided with two pins (203a).

6. The transformer integrated inductor structure according to claim 5, characterized in that: The base (1) has a connection socket (101) and a sheet-shaped socket (102).

7. The transformer integrated inductor structure according to claim 6, characterized in that: The connection jack (101) is connected to one end of the transformer connection group (401) or one end of the inductor connection group (402).

8. The transformer integrated inductor structure according to claim 7, characterized in that: Each of the sheet-shaped jacks (102) is correspondingly connected to a pin (203a).

9. The transformer integrated inductor structure according to claim 8, characterized in that: The base (1) is also provided with a transformer embedding groove (103) and an inductor embedding groove (104).

10. The transformer integrated inductor structure according to claim 9, characterized in that: The transformer part (2) is arranged on the transformer embedding groove (103), and the inductor part (3) is arranged on the inductor embedding groove (104).

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